RU2798128C2 - Electrical safety device and system - Google Patents

Abstract

FIELD: electrical safety systems; fire safety.

SUBSTANCE: invention relates to an electrical safety system for detecting and eliminating such a hazard. The system includes a plurality of electrical safety devices, comprising a socket configured to receive a power plug of an electrical appliance for connecting a current source to an electrical appliance, a thermal sensor for detecting the surface temperature of the power plug when it is inserted into the socket, and a processor, as well as one or more remote devices and a wireless communication channel for sending a signal to the remote devices, wherein the electrical safety devices and the remote devices form a mesh network in which the electrical safety devices and the remote devices communicate with each other.

EFFECT: detecting the potential risk of fire at an earlier stage.

22 cl, 9 dwg

Description

FIELD OF TECHNOLOGY

The present invention relates to an electrical safety device for detecting a danger associated with the use of electricity, and to a system of a plurality of interconnected electrical safety devices for detecting and eliminating such a danger.

BACKGROUND OF THE INVENTION

The risk of fire from faulty household appliances has been a growing concern in recent years. It is reported that 40% of accidental fires in homes are caused by electrical appliances or the power supply. Many of these fires are caused by small power surges or changes in environmental conditions, the effects of which could be mitigated if detected and dealt with at an earlier stage. Thus, in the modern era, when more and more household devices require a permanent connection to the mains, it is necessary to take measures to ensure the safety of users and residents of homes using such devices.

One approach is to install a sensor in the house to detect parameters indicative of a fire (such as smoke, CO, CO2 or explosive gas). Such sensors are capable of detecting fire hazards and sounding an alarm to warn nearby residents. However, by the time such signs are discovered, the fire has already started, so it is too late and it is not possible to completely prevent damage and eliminate the danger to building occupants. In addition, this approach does not always guarantee the attention of nearby residents, and it has been shown that such a system does not significantly reduce the likelihood of a fire in the house. Moreover, if the occupant of the house is absent, they often have no way of knowing what is going on in the house, and it can be weeks before the occupant is actually aware of the detected parameters and the potentially devastating effects of the fire.

Therefore, what is needed is a system capable of detecting a potential fire risk at an earlier stage and preventing or mitigating the effects of the detected fire risk.

The present invention is directed to solving at least some of the above problems.

SUMMARY OF THE INVENTION

The electrical safety device according to the present invention comprises a socket configured to receive an electrical plug of an electrical appliance for supplying current to the electrical appliance, a thermal sensor configured to detect the surface temperature of the electrical plug when it is inserted into the electrical outlet, and a processor associated with the thermal sensor and configured with the ability to determine when the measured surface temperature exceeds a predetermined threshold.

By measuring the surface temperature of the electrical plug of the device and detecting that the surface temperature exceeds a predetermined threshold, the electrical safety device of the present invention can detect a potential hazard at an earlier stage compared to conventional methods for detecting a hazard associated with the use of electricity.

Although the temperature sensor is configured to detect the surface temperature of the electrical appliance, it is also capable of detecting a flame or an increase in ambient temperature. The temperature sensor is preferably configured to detect the surface temperature of the electrical plug housing and/or cable, and preferably both the electrical plug housing and the cable.

The processor may be configured to determine when the surface temperature is in a pattern indicative of a potential hazard associated with the use of electricity. For example, it may be configured to determine when the surface temperature gradients of the housing and/or cable of the electrical plug exceed a certain level, when the temperature distribution of the plug surface has a certain pattern of change, or when the rate of change in surface temperature has a certain pattern of change. The processor may use a machine learning algorithm and may be trained to determine such a pattern of change indicative of a particular hazard. The electrical safety device may also include a memory configured to store data associated with a surface temperature change pattern that is associated with a particular hazard, wherein the processor is configured to receive surface temperature data from the temperature sensor and compare it with data stored in the memory to danger detection. The processor may be configured to detect a hazard based on the output of a thermal sensor in combination with one or more sensors, for example, a machine learning algorithm may detect a hazard based on the output of a combination of sensors.

Preferably the temperature sensor is an infrared sensor, such as an infrared temperature sensor. In particular, the temperature sensor is preferably an infrared camera containing an array of thermopile detector pixels. In this way, a highly accurate reading of the surface temperature can be obtained for reliable hazard detection. The use of thermal imaging provides the ability to measure the distribution and change in temperature, which allows more information to be collected to more reliably detect electrical hazards at an earlier stage.

Preferably, the temperature sensor includes a lens providing a wide field of view, such as 30 to 90 degrees, preferably about 60 degrees.

Preferably, the temperature sensor is configured to non-contactly measure the surface temperature of the power plug when it is plugged into a socket. This provides a more accurate means of determining temperature and eliminates the need for precise placement of the sensor in contact with the mains plug, where slight movement of the sensor over the life of the device could result in a failed measurement.

Preferably, the electrical safety device includes a housing, wherein the socket is made in the surface of the housing, and the temperature sensor is configured to determine the temperature in the area external to the housing, at the location of the socket. When making a measurement on the portion of the plug that is external to the safety device (i.e., the body of the plug, not the pins), the measurement is not affected by the heat of the electrical components of the safety device itself, allowing an image to be obtained of the significant part of the body of the plug where it is most likely the outbreak and/or spread of fire.

Preferably, the receptacle comprises a plurality of openings, and a temperature sensor is positioned inside the housing between the openings of the receptacle and is directed out of the housing so as to detect the temperature of the front surface of the power plug when it is inserted into the receptacle. Alternatively, a thermal sensor is located on the surface of the housing near the socket and is directed along the outer surface of the housing to detect the temperature of the side surface of the mains plug when it is inserted into the socket, as well as the temperature of the connected cable. Both configurations provide an image of a substantial portion of the fork body for accurate surface temperature measurements. The second configuration allows the temperature sensor to be placed further away from the fork, allowing measurements to be made over a larger portion of the fork. The first configuration allows the temperature sensor to be placed completely within the body of the electrical safety device, which ensures its protection.

In one example, the electrical safety device is a plug adapter block, comprising: a male part configured to be inserted into an electrical mains socket, the plug part being positioned relative to the socket such that the electric mains plug of the electrical appliance can enter the socket of the electrical safety device when the plug part plugged into a power outlet. This allows the electrical safety device to be used with the existing mains outlets in the building by simply inserting the plug of the adapter box into the mains outlet and plugging the monitored device into the outlet of the adapter box.

In another example, the electrical safety device is a wall outlet faceplate. Preferably, the front panel of the power outlet is designed to be mounted on a surface, such as a wall, to interface with the mains wiring. In particular, the electrical safety device is a power outlet faceplate box that can be installed in a building instead of conventional power outlet boxes, for example by screwing the device to a wall at electrical access points. This allows you to install electrical safety devices throughout the building to control all electrical appliances.

Preferably, the electrical safety device also includes a relay switch configured to turn off the supply of mains current to an electrical appliance connected to the electrical safety device when the processor determines that the surface temperature of the plug exceeds a predetermined threshold. Thus, if the temperature of the electrical appliance plug reaches a level that considered hazardous, the electrical safety device may block the flow of current to the appliance, thereby eliminating the hazard.

The electrical safety device may have one, two or more outlets, each of which may have its own current sensor and relay switch.

Preferably, the electrical safety device has one or more wireless links configured to communicate with a remote device. This allows the electrical safety device to be used in an electrical safety system (i.e., a network of electrical safety devices) throughout the building to identify risks, alert the user, and eliminate the risks. Preferably, the electrical safety device is configured to communicate with other electrical safety devices and/or remote devices over both a Wi-Fi network and a narrowband RF network. This provides a backup in case one of the networks fails.

Preferably, the electrical safety device comprises one or more additional local sensors, which are one or more of the following sensors: a smoke and/or gas detector, a carbon monoxide detector, a humidity and/or water detector, and a current detector, allowing the device to detect a greater range of hazards and more reliably detect hazards. In preferred examples, the electrical safety device comprises each of the following sensors: a smoke and/or gas sensor, a carbon monoxide sensor, and a current sensor, wherein the processor is configured to determine if a respective parameter measured by each sensor exceeds a predetermined threshold value. This combination of sensors allows you to reliably detect almost all types of hazards associated with electrical equipment in the home. Preferably, the processor is configured to detect a hazard based on the output of the sensor combination. In particular, the processor uses a combined approach in which the output of multiple sensors is used to more reliably detect risk. For example, the processor may use a machine learning algorithm that uses the output of multiple sensors to detect a risk. Thus, a hazard can be detected more reliably than based on the output of a single sensor. For example, a combination of the outputs of a current sensor and a thermal sensor can be used to more reliably detect an electrical fault.

The electrical safety device is designed in such a way that each measured parameter has a corresponding threshold or pattern of change indicating danger. The device may include a memory that stores data, including such thresholds and patterns of change, so that the processor can compare the measured parameters with corresponding data to detect potential risk. Similarly, the processor can compare the pattern of change in the combination of measured parameters with the response data stored in memory to more reliably detect a hazard than would be the case based on the output of a single sensor.

The device may additionally contain a water sensor, wherein the electrical safety device comprises a main body in which a socket, a temperature sensor and a processor are located, and the water sensor is arranged to be placed on the surface under the main body of the electrical safety device and can be connected to the main body using a wired or wireless connections. It also allows the detection of water leaks, which can be especially dangerous when combined with electrical equipment failure. The processor may be configured to analyze the response of the water sensor in combination with one or more other sensors to more reliably detect a hazard.

The electrical safety device preferably also includes means for issuing an alarm to the user. The device may include an audible or visual alarm to notify the user when the processor determines that a measured parameter exceeds a threshold value. The device is preferably also configured to send an alert to the user device, such as a smartphone, to notify the user of the location and type of hazard detected. The device may also be configured to notify a voice assistant (eg, Apple™ Siri, Google™ Assistant, Microsoft™ Cortana, Amazon™ Alexa) that notifies the user and provides hazard information and directions, such as the route to exit the building.

An electrical safety device provides other benefits when used in an electrical safety system comprising one or more electrical safety devices and one or more remote devices. Thus, the devices can communicate to notify the user of a risk and to take corrective action, either automatically or at the user's request.

In another aspect of the invention, an electrical safety system is provided, comprising: an electrical safety device according to any one of the preceding claims and one or more remote devices, wherein the electrical safety device has a communication channel and is configured to send a signal to the remote device using the communication channel when the processor determines that The surface temperature of the power plug has exceeded a predetermined threshold.

Thus, the remote device can either warn the user or take action to eliminate the potential danger. The remote device includes another other device connected to the network, which is not the electrical safety device described above, but is, for example, a smartphone, smart TV, voice assistant device or other intelligent user device, remote control valve, router or hub, mobile phone dock, fire alarm, smoke alarm, sprinkler system.

Preferably, the communication channel is a wireless communication channel, and the wireless communication channel is preferably provided by one or more of the following: narrowband RF network, Wi-Fi and Bluetooth. An electrical system may include one or more electrical safety devices and one or more remote devices, wherein the electrical safety devices and remote devices form a mesh network in which the electrical safety devices and remote devices can communicate with each other. Thus, each device can communicate with other devices to provide consistent actions and alerts. Preferably, the electrical safety devices and remote devices are configured to communicate over both a Wi-Fi network and a narrowband RF network, which creates a reserve in the event of a failure of one of the networks. The narrowband RF network can operate, in particular, at 868 MHz.

Preferably, the at least one remote device is an intelligent user device configured to issue an audible or visual alarm upon receiving a signal from the electrical safety device. For example, a smartphone may be running software to work with an electrical safety system. The software may display hazard warnings to the user, locate a detected risk, provide details of a detected risk, allow the user to select a risk remediation option such as cutting off the mains or local supply of gas, water and electricity, activating a sprinkler system, calling the fire brigade or turn off the device.

Preferably, at least one remote device includes a voice assistant device (eg, Applet Siri, Google™ Assistant, Microsoft™ Cortana, Amazon™ Alexa) that is configured to notify the user when a signal is received from the electrical safety device. The voice assistant device may be configured to provide one or more of the following: information about the type and location of the hazard, response options (e.g., calling emergency services, activating a shutdown device), or information on how to safely leave the building to avoid the hazard.

Preferably, at least one remote device includes a shutdown unit having a communication channel, and the shutdown unit is configured to restrict the flow of water, gas or electricity through it upon receipt of a signal from the electrical safety device. Thus, the disconnect unit can receive a message from the electrical safety device that the device is exhibiting behavior indicating a fault, and the disconnect device can take action to restrict or prevent the flow of services to that particular device, to a part of the building, or to the building as a whole.

Trip blocks can take several different forms. In one example, at least one shut-off unit is a local water shut-off unit configured to be installed at a local water supply connection to an electrical appliance, the local water shut-off unit comprising: a cable or wireless connection for connection to an electrical safety device and a motorized valve, wherein the block of local shutdown of water supply is configured to close the valve with an electric drive to limit the supply of water to the electrical device after receiving a signal from the electrical safety device. Thus, the supply of water to a particular appliance, to a group of appliances, or to a part of a building can be limited to prevent flooding or current flow in the water in the presence of an electrical circuit failure.

Preferably, at least one shut-off unit comprises a mains cut-off unit, comprising: at least one motorized valve, configured to be installed in a water supply network, in a pressurized water tank or in a gas supply network, while the mains supply cut-off unit is made with the ability to close the motorized valve to limit the mains supply when receiving a signal from the electrical safety device. Preferably, at least one disconnect unit is a mains supply disconnection unit comprising a mains electric switch, wherein the mains electric supply disconnection unit is configured to actuate the mains electric switch to disconnect the mains supply after receiving a signal from the electrical safety device. With these mains disconnect units, the onward supply of gas, electricity or water to an entire building or to a specific area within a building can be stopped to prevent the development of a hazard.

The mains power supply cut-off unit may be connected to the mains consumer unit and configured to actuate a network switch on the mains consumer unit to cut off the mains power supply. Alternatively, the mains disconnect unit can be built into the consumer unit or fuse box.

The trip unit may contain one or more local sensors to detect a local hazard. Preferably, the trip unit comprises a processor and one or more of the following sensors:

a temperature sensor, a smoke and/or gas sensor, a carbon monoxide sensor, a humidity and/or water sensor, and a current sensor, wherein the shutdown unit is configured to limit the flow of water, gas, or electricity when the processor determines that the parameter measured by the local sensor exceeds predetermined threshold.

In another example of the invention, an electrical appliance is provided with a built-in electrical safety device for monitoring the temperature of the electrical appliance's internal components and detecting a potential hazard.

In particular, an electrical device is provided, comprising: a housing, electrical components within the housing configured to operate the electrical device, a thermal sensor configured to detect the surface temperature of the electrical components, and a processor associated with the thermal sensor, the processor configured to determine whether when the measured surface temperature exceeds a predetermined threshold.

Preferably, the temperature sensor is an infrared sensor, such as an infrared temperature sensor. In particular, the temperature sensor is preferably an infrared camera containing an array of thermopile detector pixels. In this way, a highly accurate indication of the surface temperature of internal electrical components can be obtained through non-contact temperature measurement for reliable hazard detection. The use of thermal imaging provides a measurement of temperature distribution and change, which allows more information to be collected to more reliably detect electrical hazards at an earlier stage. Preferably, the temperature sensor includes a lens that provides a wide field of view, such as 40 to 80 degrees, preferably about 60 degrees.

Preferably, the temperature sensor is configured to non-contactly measure the surface temperature of the internal electrical components in the application of regulatory requirements for the use of electricity. This provides a more accurate means of determining temperature and eliminates the need for precise placement of the sensor in contact with electrical components where slight movement of the sensor over the life of the device can result in a failed measurement. Thermal imaging allows you to collect more information in a non-contact way, while you can determine the risk of fire inside the device by a certain indicative pattern of changes in the surface temperature of electrical components.

The electrical appliance is preferably one of the following: microwave oven, gas or electric oven, boiler, consumer unit, dishwasher, refrigerator and/or freezer, washing machine, tumble dryer.

The internal electrical components are preferably one or more of the following: a motor, a compressor, a heater, a power supply, a fuse, an electrical circuit, or any other components that may overheat.

The temperature sensor is preferably mounted inside the housing of the electrical appliance so that it faces the internal electrical components without contact with them. Preferably, the thermal sensor is a thermal imaging camera for imaging a substantial portion of the surface area of internal electrical components.

The processor of the electrical appliance may be configured to determine when the surface temperature is in a pattern indicative of a potential hazard associated with the use of electricity. For example, it may be configured to determine when the temperature gradients exceed a certain level, when the fork surface temperature distribution has a certain pattern, or when the rate of change of the surface temperature has a certain pattern. The processor may use a machine learning algorithm and may be trained to detect such a pattern of change indicative of a particular hazard. The electrical safety device may further comprise a memory configured to store data related to a surface temperature change pattern that is associated with a particular hazard, wherein the processor is configured to receive surface temperature data from the temperature sensor and compare it with data stored in the memory to danger detection.

The electrical appliance preferably also has one or more wireless links configured to communicate with the electrical safety device described above and/or with a remote device. This allows the electrical device to be used in an electrical safety system (as described above) throughout the building to identify risks, issue a warning to the user, and eliminate the risks. Preferably, the electrical appliance is configured to communicate with other electrical safety devices and/or remote devices over both a Wi-Fi network and a narrowband RF network. This provides a backup in case one of the networks fails.

Preferably, the electrical appliance comprises one or more local sensors, which are one or more of the following sensors: a smoke and/or gas sensor, a carbon monoxide sensor, a humidity and/or water sensor, and a current sensor, wherein the shutdown unit is configured to restrict the flow water, gas, or electricity when the processor determines that a parameter measured by a local sensor exceeds a predetermined threshold.

All the functions described above in relation to the electrical safety device can also be implemented in an electrical device with an internal temperature sensor. An electrical appliance may also be part of the electrical safety system described above.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will now be described by way of examples with reference to the accompanying drawings.

Fig. 1 schematically illustrates a socket outlet faceplate electrical safety device in accordance with the present invention.

Fig. 2A and 2B schematically illustrate an electrical outlet faceplate electrical safety device in accordance with the present invention.

Fig. 3 schematically illustrates an electrical safety device, which is in the form of a plug adapter block, in accordance with the present invention.

Fig. 4 schematically illustrates an electrical safety device, which is in the form of a plug adapter block, in accordance with the present invention.

Fig. 5 schematically illustrates a remote electrical safety device, which is a mains disconnect unit, in accordance with the present invention.

Fig. 6 schematically illustrates a remote electrical safety device, which is a mains disconnect unit, in accordance with the present invention.

Fig. 7 schematically illustrates an example of an electrical safety system in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In FIG. 1 shows an electrical safety device 100 in accordance with the present invention. The electrical safety device 100 includes a socket 120 configured to receive an electric plug of an electrical appliance, and a temperature sensor 110 configured to detect the surface temperature of the electric plug when it is inserted into the socket 120 of the electrical safety device 100. The electrical safety device 100 also includes a processor (internal to the device and not shown) that communicates with the temperature sensor of the software and is configured to determine when the measured surface temperature of the electrical plug inserted into the socket 120 exceeds a predetermined threshold. Since the temperature sensor 110 is configured to detect the surface temperature of the electrical plug inserted into the socket 120, the electrical safety device 100 allows for earlier detection of dangerous conditions that could lead to a fire. In particular, the main cause of house fires is overheating due to an electrical malfunction of an electrical appliance. Such electrical faults can be detected by an elevated connection surface temperature of the mains plug, so that by monitoring this parameter, electrical faults can be detected before they worsen.

The electrical safety device 100 may also have a set of functions to provide various responses when the processor determines that the measured electrical plug surface temperature exceeds a predetermined threshold. In particular, the electrical safety device also includes an internal buzzer to sound an alarm when the plug inserted into the socket 120 is above a predetermined threshold, indicating a risk of fire. The electrical safety device 100 may include a relay switch to stop the flow of current through it to the appliance. The device 100 also has wireless communication capabilities for sending danger alerts to a user's device, such as a smartphone, and for performing various risk mitigation actions, including turning off water or gas supplies. This extended functionality of the electrical safety device 100 will be described in more detail below.

Thermal sensor

As described above, the temperature sensor 110 is configured to detect the temperature in a region corresponding to the electrical plug when it is inserted into the socket 120 to detect the surface temperature of the electrical plug. Thermal sensor SW is an infrared sensor, in particular an infrared camera, containing a matrix of infrared detector pixels. The infrared array sensor may comprise an array of 8 x 8 thermopile elements that sense the absolute temperature by sensing the emitted infrared radiation. This infrared array sensor can create thermal images by measuring actual temperature and temperature gradients, which can accurately measure surface temperature and detect temperature changes. The infrared array sensor preferably also includes a lens to obtain an increased viewing angle so that a larger area of the electrical plug can be imaged even when the temperature sensor 110 is located at a short distance. The lens may be an integrated silicone lens that provides a field of view of about 60 degrees. The temperature sensor 110 is preferably configured to detect temperature changes in the range of -20°C to 100°C, which allows monitoring the surface temperature of the electrical plug when it begins to heat up in the event of an electrical failure. Thermal sensor 110 may be, for example, a Panasonic grid-EYE® sensor commonly used for motion detection, presence detection, people counting, and lighting control.

The temperature sensor 110 is configured to non-contactly measure the temperature of an electrical plug of an electrical appliance when it is connected to a socket 20. The use of non-contact thermal imaging allows visualization of the electrical plug as a whole, making it possible to detect temperature changes throughout the entire plug, and not at one point, as with contact measurement. In addition, contact measurement requires constant contact of the temperature contact with the electrical plug when it is inserted into the socket 120. If the contact temperature is moved so that it is no longer in contact with the electrical plug, it will no longer provide an accurate measurement. temperature, and there is a risk that a dangerous malfunction in the electrical appliance will not be detected. The infrared array sensor also allows more complex processing of the thermal image received by the sensor. For example, more advanced algorithms based on machine learning can be used to detect temperature patterns that indicate a high risk of malfunction in a device.

The temperature sensor can be placed in various ways to provide a measurement of the surface temperature of the electrical plug. In FIG. 1, a thermal sensor 110 is disposed within the body 130 of the device 100 between the holes 121 forming the socket 120. In particular, there is a hole 111 on the surface of the body 130 at the center position of the socket 120 between the holes that receive the prongs of the electrical plug. Thermal sensor 110 is located within the housing and faces outward from housing 130 of device 100. Thus, thermal sensor 110 acquires an image of the base surface of the plug when it is inserted into outlet 120. Hole 111 may be larger than the infrared-sensitive array of thermal sensor 110, and thermal sensor recessed into the housing and can be viewed through the opening to provide a wider field of view of the front surface of the plug inserted into the receptacle 120. Thus, the thermal sensor may provide a non-contact measurement of the surface temperature of the front surface region of the plug inserted into the device 100. The thermal sensor 110 may also be placed in several alternative locations to allow non-contact measurement of the surface temperature of the electrical plug inserted into the electrical safety device 100.

Fig. 2 and 3 illustrate an alternative possibility where the temperature sensor 110 is located on the surface of the housing 130 and is directed along the surface 131 of the housing 130 to measure the surface temperature of the electrical plug. In particular, the temperature sensor 110 may be molded into the body 130 of the electrical safety device 100. In this example, housing 130 has an integral protrusion 112 on surface 131 that receives an infrared sensor to guide it along the face of housing 130 toward receptacle 120. FIG. 2B is a side view of the electrical device 100 shown in FIG. 2A. Housing protrusion 112 is visible on surface 131 of housing 130. Thermal sensor 110 is held within this housing protrusion 112 so that it is aligned approximately parallel to the surface of housing 130. Sensor 110 may be located at any point around receptacle 120 and, for example, may be directed towards the outlet 120 from the side, as shown in FIG. 2A from below, as shown in FIG. 3 or above. Positioning the sensor so that it is directed along the surface of the housing allows the sensor to be moved away from the plug to provide a wider field of view around the plug when it is inserted into a socket. Given that the thermal sensor lens 110 provides a field of view of about 60°, a significant portion of the electrical plug can be imaged to detect increasing temperature gradients as they occur, allowing more accurate identification of temperature rises associated with electrical faults.

Although the temperature sensor 110 is primarily configured to detect surface temperature, which allows for earlier detection of possible faults before they lead to significant temperature rises leading to sparks or flames, the temperature sensor can obviously also detect the presence of such sparks or flames, since they occur in the plug due to significant infrared (IR) radiation. Thus, the temperature sensor 110 allows for earlier detection of temperature increases associated with possible dangerous malfunctions within the device, and the device can issue various warnings about dangers and take actions to minimize the risk of such malfunctions, as will be described below.

Outlet faceplate device

In FIG. 2A shows various other functions of the electrical safety device in accordance with the present invention. The electrical safety device 100 shown in FIG. 1 and 2A is a wall outlet faceplate 100 that is capable of being mounted, for example by screws 101, at an electrical connection point on a wall or other surface. The electrical safety device 100 in the form of a wall outlet faceplate shown in FIG. 1 and 2A is a substantially flat body bounded by housing 130, like a conventional faceplate or power outlet front. The power outlet faceplate electrical safety device 100 is configured to be placed in place of a conventional power outlet faceplate at electrical access points in a building to provide increased protection against the risk of fires and electrical failures. In the example shown in FIG. 1 and FIG. 2A, outlet faceplate 100 contains two outlets 120, but such electrical safety devices may also have one outlet 120 or more outlets 120. Similarly, although the device 100 shown in FIG. 1 and 2A, has the form of a front panel, made with the possibility of fastening to a wall or other surface, it can also be made in the form of a movable extension cable with the possibility of connecting via a cable to a power outlet.

The outlet faceplate device 100 includes switches 102 for turning on the supply of current to the corresponding outlet 120, as is the case with a conventional outlet faceplate. In use, the power outlet faceplate device 100 is fixed to the wall with screws 101 instead of the conventional power outlet faceplate. An electrical appliance is plugged into outlet 120 of device 100 and current is applied by setting switch 102 to the on position. The temperature of the surface of the appliance plug inserted into the outlet 120 is monitored by a thermal infrared sensor 110, which extends along the surface of the housing 120 and is directed towards the outlet 120. When a particular temperature or temperature change is detected by the processor (not shown), the device 100 detects a possible risk and can take a number of actions. . The electrical safety device 100 firstly includes an internal buzzer 140 that is configured to sound when a danger is detected to alert people in the surrounding area. In addition, the electrical safety device has a wireless communication channel configured to communicate with one or more remote devices. In particular, the device 100 is configured to communicate via a communication channel with a user device, such as a smartphone, to alert the user to a potential electrical fault and provide further information about the type of fault detected and its location within the building.

The device 100 includes a switch 141 for resetting the device 100 or turning off the alarm 140 when it sounds. The electrical safety device 100 also includes a sequence of status LEDs to indicate to the user that the device 100 is operating correctly. In particular, the device shown in FIG. 2A has a corresponding LED to indicate network connection status, device power status, and alarm status. On the surface of the housing 130 there is a series of LEDs 142 for issuing a visual alarm to the user. The electrical safety device may also be configured to communicate wirelessly with other user devices such as a smart TV, smart watch, or other devices to indicate a potential hazard and provide details of the detected hazard.

Additional sensors

In addition to the thermal sensor 110, the electrical safety device 100 includes additional sensors for detecting a hazard. In particular, the electrical safety device includes a smoke and gas sensor 113 configured to detect smoke from any electrical device connected to the electrical safety device 100 or smoke and gas in the vicinity of the device 100. The electrical safety device 100 also includes a carbon monoxide sensor 114 configured to detect carbon monoxide in the vicinity of the electrical safety device 100, such as from gas stoves or boilers. The device 100 also includes a current sensor 115 for monitoring the current supplied to an electrical appliance connected to the electrical safety device 100 . The current sensor is located inside the device for measuring current between the pins of the plug and the corresponding contacts inside the body of the device 100.

Each of the sensors is electrically connected to a processor within the device so that the processor can calculate whether any of the measured parameters indicate a potential hazard. The processor is configured to detect a potential hazard by determining that the value of the measured parameter exceeds a predetermined threshold value. However, more sophisticated processing may be used to detect a hazard, for example by determining the rate of change of a measured parameter or that a measured parameter change has a particular pattern or pattern associated with increased hazard risk. The processor may also be configured to detect hazards based on a combination of sensor outputs for more reliable risk detection. For example, the processor may use more complex algorithms, such as machine learning algorithms that receive input from multiple sensors, to determine increasing risk. For example, in the case where the readings of a current sensor and a thermal sensor are lower than their respective thresholds, the pattern of the sensors readings in combination may indicate an evolving hazard that can be detected at an earlier stage than with a single sensor. Similarly, an unusual rate of change in one or more parameters may indicate a hazard. The device 100 may include an internal memory containing such sensor parameter data, wherein the processor is configured to compare the received data with data stored in the memory indicative of a hazard to detect a hazard. The processor may use more sophisticated algorithms, such as machine learning algorithms, which can be trained to detect changes in parameters associated with increased risks of a potential hazard. For example, a machine learning algorithm may include a neural network (or support vector machine) that functions by taking data from sensors as input and, after being trained on a set of simulated hazards, may be able to detect a real hazard based on a combination of sensor inputs, using weights and thresholds that cannot be pre-set by the operator. In another example, a linear regression model may be used to detect changes in parameters over time in predicting or assessing the level of risk.

The electrical safety device 100 may also include a water sensor 116 configured to detect water in the vicinity of the device 100, as shown in FIG. 2A. In particular, the water sensor 116 may include a water sensor housing 117 located on the floor below the electrical safety device 100 to detect water accumulation on the surface below the device 100. The water sensor housing 117 is connected to the device via a water sensor connection 118 as shown in FIG. . 2A. Connection 118 may include a plug that plugs into an appropriate receptacle on the side of the device to connect the water sensor to the internal processor so that the processor can receive signals from the water sensor to detect water and alert the user using an alarm or wireless link to the user device. . The presence of water can be particularly hazardous when there is an electrical failure in the appliance, so that in order to detect such a hazard, the optional water sensor 116 can detect a leak from a household appliance or a leak from tap water.

In addition to issuing an alarm or sending an alarm to a remote device such as a smartphone, the electrical safety device 100 can also automatically or at the user's request respond to a detected hazard. Thus, the electrical safety device 100 forms part of an electrical safety system that can detect a hazard, alert the user, and take appropriate action to eliminate the hazard.

The electrical safety system also includes one or more remote devices which, in the example shown in FIG. 2A are implemented as a trip unit 150. The system may include various types of shutdown units, each with a link to the electrical device 100 and some type of actuator to restrict or shut off the flow of water, gas, or electricity when signaled by the electrical safety device 100 to reduce the potential consequences of a hazard. In FIG. 2A, shutoff device 150 is a local water shutoff unit 151 that includes the motorized valve shown in FIG. 5V. The motorized valve 151 of the shutdown unit 150 is located in the cold water supply line 161 which transports water from the water supply to the electrical appliance. The local water shutoff unit has a communication line 152 with the electrical safety device 100, which in the example shown in FIG. 2A is provided as a cable connection 152 connected to a port in the body of the electrical safety device 100 so that signals from the processor can be sent to the motorized valve 152 to actuate the valve. Thus, when a danger is detected by the electrical safety device 100 using one of the sensors 110, 113, 114, 115, 116, a signal can be sent to the local water shutoff unit to actuate the valve 151 and shut off the water supply to the electrical appliance, such as a washing machine. machine or dishwasher.

An electrical appliance may be connected to an electrical safety device 100 to which a remote valve 151 is connected. Thus, an electrical failure of the appliance itself can be detected, for example, by a current sensor 115 or a temperature sensor 110, and the water supply to the device can be turned off to prevent leaks from a faulty appliance. Similarly, if a water sensor 116 connected to the electrical safety device 100 detects a leak by detecting water accumulation on the floor under the device 100, the processor of the device 110 may send a signal through the communication channel 152 to the local water shutoff unit 150 to shut off the water supply. Shutting off the water supply can also reduce the risk of electrical malfunctions caused by the propagation of dangerous electrical currents in water that has leaked from a particular appliance. Instead of using a cable connection 152, the local water shutoff unit 152 may provide one or more modes of wireless communication with the electrical safety device 100 and other remote devices in the electrical safety system.

The electrical safety device 100 also includes a relay switch within the device 100 that is configured to turn off the current supply to an electrical device connected to the electrical safety device 100 when the processor detects a hazard through signals received from one or more sensors. Thus, if a malfunction is detected in the devices, the supply of electricity from the power supply network through the electrical safety device 100 can be immediately stopped in order to prevent further development of the danger.

Safety plug adapter

In FIG. 3 and 4 show an alternative electrical safety device 200 in accordance with the present invention. The electrical safety device 200 shown in FIG. 3 and 4 is a plug adapter block 200 that is configured to plug into a wall outlet and receive a plug of an electrical appliance such that power is supplied from the wall outlet to the appliance through the adapter block 200. Thus, instead of installing electrical safety device faceplates 100 , as shown in FIG. 1 and 2A, the security plug adapter 200 can simply be plugged into existing network terminals and electrical appliances plugged directly into the adapter 200 to obtain the enhanced security functionality described above.

The electrical safety device 200 shown in FIG. 3 and 4 has all the functions described above with respect to the front panel security device 100 shown in FIG. 1 and 2A. In particular, it comprises an infrared array sensor 210 molded in the body 230 of the device 200 so that it is directed along the outer surface of the body 230 to an area on the outer surface corresponding to the socket 220, and therefore detects the surface temperature of the plug of the electrical appliance inserted into the adapter block 200. The electrical safety adapter block 200 also includes a built-in current sensor 215 in the holes corresponding to the socket 220, a smoke and gas sensor 213, a carbon monoxide sensor 214, a separate water sensor 116 that can be inserted into the device 200 to detect water on the floor below the adapter 200, a remote local water shutoff unit 150 configured to close a motorized valve to stop the flow of water into the washing machine or dishwasher, an internal buzzer 240, status LEDs 241, an on/off/mute switch 241, and an internal processor , configured to receive signals from each of the sensors, analyze these signals to determine if they indicate a potential hazard, and warn the user of the danger through an internal alarm 240 or by sending an alarm to a remote user device, such as a smartphone.

An additional functionality that may be present in each of the electrical safety devices 100, 200 in accordance with the present invention is an internal battery backup so that, in the event of a power failure or shutdown by the security system, the electrical safety devices 100, 200 continue to work for a certain amount of time. Thus, the only difference between the device 200 shown in FIG. 3 and 4 and the device shown in FIG. 1 and 2A is that the device 200 is in the form of an adapter block having the male portion 223 shown in FIG. 4, which allows you to insert the device at a point in the power supply network.

Remote power off

Another remote device forming part of the electrical safety system of the present invention is the mains disconnect unit 250 shown in FIG. 5A. The mains disconnect unit 250 comprises at least one motorized valve 251 configured to be installed in a supply network, such as a water supply network, a pressurized water tank, or a gas supply network. The mains disconnect unit 250 further comprises a control unit 260 configured to be installed adjacent to the mains source. The mains shutdown control unit 260 has a communication channel for transmitting signals to the motorized valve 251 to turn off the mains supply. In the example shown in FIG. 5A, a valve 251 is located in the water supply line 162 to shut off the mains water supply to the premises. The power outage control unit 260 has a communication path 252 and is configured to receive signals from an electrical safety device, such as the device shown in FIG. 1-4, and accordingly control the mains motorized shut-off valve 251 to cut off the mains supply when a danger is detected by one of the electrical safety devices 100, 200 in the network of electrical safety devices.

The power cut control unit 260 also includes local sensors with functions similar to those of the electrical safety devices 100, 200 to detect a local hazard and cut off the power supply accordingly. In particular, the power outage control unit 260 may include a thermal sensor 261 which, for example, as explained above with reference to the electrical safety device 100, 200, is configured to detect a spark, flame, or temperature increase in the vicinity, a smoke and gas sensor 263, a sensor 264 carbon monoxide and an additional water sensor 226 to detect water accumulating on the floor under the control unit 260. Thus, the network supply shutdown unit 250 has the necessary functions for detecting local dangers and, accordingly, disconnecting the network supply, as well as for notifying other devices on the network. The network management unit 260 also includes an internal buzzer 265 to alert the user to a danger, and can also send signals to the user device such as a smartphone or smart TV to warn the user of the danger, describing the location of the detected danger. The device may also have an internal backup battery 268 as well as the devices described above. The device can be connected directly to the power supply via connection 269.

The mains disconnection unit 250 described above thus offers additional functions with respect to the control unit 260 with various sensors for detecting local hazards. However, a less complex mains disconnect unit can be represented more simply as a motorized valve 251 and a wireless receiver 252 configured to receive a signal sent by the electrical safety device 100, 200 as shown in FIG. 5V. In this case, the motorized valve 251 is in a supply line, such as a water supply network, pressurized water tank, or gas supply network, and includes a wireless receiver component 252 that simply contains means for receiving a signal sent by an electrical safety device within the system. electrical safety, and to actuate a valve to shut off the mains supply.

The electrical safety system of the present invention may also include a mains disconnect unit 350 as shown in FIG. 6. The mains power cut unit 350 includes a mains power cut control unit 360 that has the same functionality as the control unit 260 described above with reference to FIG. 5A. In particular, it can receive signals sent from the electrical safety devices 100, 200 and remote devices on the electrical safety network, and can detect local hazards using one or more local sensors. The power cutoff unit 350 differs from the mains cutoff unit 250 in that it includes a wired or wireless link 352 to a power switch 351 within a consumer electrical unit (or fuse box). Thus, when the power outage control unit 360 either receives a signal from an electrical safety device indicating the detection of a danger, or detects a local danger using one or more local sensors within the control unit 360, the internal processor sends a signal through the communication channel 352 to the power switch 351 consumer unit 353, which cuts off the mains supply. Thus, it is possible to prevent the further development of a potential hazard by turning off the power supply to the building. In an alternative example, all functions of the control unit 360 may be directly integrated into the consumer unit or fuse box. Moreover, as with the shutdown units described above, a simpler option can be provided, simply including a wireless receiver built into the consumer unit 353 and an actuator that flips the power switch 351 in the consumer unit 353 when the wireless receiver receives a signal from a remote device or device 100, 200 electrical safety.

Electrical safety system

Fig. 7 illustrates an example of an electrical safety network 400 in accordance with the present invention. The electrical safety system 400 may comprise a plurality of electrical safety devices 100, 200 as described above and a plurality of remote devices 250, 251, 350, 402. All remote and electrical safety devices may communicate over a wireless connection, such as through a narrowband RF network, Wi-Fi. fi and bluetooth. Preferably, each device is configured to communicate on two communication channels so that all devices can operate on two different types of networks as a security measure. In this example, devices may communicate over Wi-Fi 404 and radio mesh 403, for example, at 868 MHz. The connection of each of the devices in the network can be controlled by the central smart hub 401 connected to the home router 405, and communication between various remote devices and electrical safety devices can be controlled. The smart hub 401 may also have the functionality described above with respect to sensors, connectivity, and alerting associated with the previously described devices. By providing two communication networks, if one network fails, the devices can communicate to issue warnings or take certain actions to shut down the network supply to reduce the risk of a particular hazard.

As described above, the remote device may be a smartphone 402 shown in FIG. 7. A smartphone (or other smart user device) can run an application through which the user can control the system and receive alerts. In particular, when a hazard is detected, an alarm can be sent to the user's smartphone and the application can display information about the hazard, such as fire detection and location of the fire, and provide the user with options to eliminate the hazard, for example, by turning off the power supply or calling emergency services . The application may also be configured to monitor the current consumption of electrical appliances connected to the electrical safety devices 100, 200. In particular, electrical safety devices include a current sensor that can be used to monitor the amount of current used by a particular device inserted into the electrical safety device 100, 200. In this way, the user can monitor current consumption and detect any potentially faulty units that have unusual current consumption characteristics.

Since the current sensor measures the current supplied to each outlet, the electrical safety system can also monitor the power consumption at each individual outlet of the electrical safety device. This data can be provided to a smartphone application and stored in memory to enable the user to optimize energy consumption. This will allow you to more accurately measure power consumption and identify any high-current components that consume more power than usual for a certain period of time, as well as send a danger alert to your smartphone. In addition, it can be used as a security system, for example, if no activity is detected at a certain time of the day, the electrical safety device sends an alarm to the smartphone. This can be used to detect inactivity that may be of concern, for example for lonely people, in particular sick or older people who are at greater risk.

The application also allows you to remotely control the relay switches on any of the electrical safety devices to turn on and off the power supply to a specific outlet. For example, the application provides the following functions: turn on or off, turn on or turn off delay timers, as well as a random mode when the building is free.

The electrical safety system 400 may also be configured to automatically perform an appropriate action without requiring user input through the user device 402. This automatic action may be programmed to perform based on certain detected hazards. For example, in the system shown in Fig. 7, if water is detected by the water sensor 116 connected to the electrical safety adapter box 200, the electrical safety adapter box can send a signal to the connected local water shutoff box 150 to actuate the remote valve 151 to shut off the local water supply to the connected appliance and prevent further leakage. . Likewise, if the current sensors in the electrical safety devices 100, 200 detect a power surge, or the infrared thermal sensors detect a temperature rise associated with the power surge, the mains disconnect unit 350 may send a signal to the power switch 351 of the consumer unit 353 to shut off the mains power supply.

The electrical safety system can perform the following actions either automatically or at the request of the user, for example from a control interface such as a smartphone.

When the electrical safety device detects a potential hazard, when the processor determines that the sensor output exceeds the appropriate threshold, the electrical safety device may take one or more of the following actions:

• Issue a local alarm.

• Locally turn off the power at the plug adapter, at one outlet, or individually at each output of a dual wall outlet.

• Send a signal to the hub via a mesh radio network to issue a danger alert to all smartphones connected to the system via AWS (Amazon Web Services). For example, the hub can also inform third-party devices about activation using a standard protocol, i.e. IFTTT (If This Then That) (other third-party protocols are available).

• Notify other devices on the mesh network to activate audible alarms and disable configurable outputs.

• Notify the voice assistant device to provide information about the hazard and response options, as well as instructions to the user, such as how to leave the site safely.

• Send signals to actuate remote water shut-off valves in the cold water supply and pressure tank and remote gas shut-off valve for automatic shutdown.

• Send a signal to the mains disconnect unit for remote shutdown of the mains consumer unit.

With the electrical safety device according to the present invention, a hazard is detected at an early stage. In particular, by providing a thermal sensor capable of detecting the surface temperature of an electrical appliance plug when it is inserted into the electrical safety device 100, 200, an electrical failure can be detected before it escalates into a threatening hazard such as a fire. Additional functionality provided by additional sensors and communication between electrical safety devices and remote devices allows you to detect a hazard at an early stage, warn the user of the hazard and take appropriate actions to eliminate the hazard. Thus, the present invention has advantages over known devices in terms of the speed with which potential hazards can be detected and in terms of additional features to automatically eliminate hazards and effectively alert users to the hazard.

Electrical appliance with built-in temperature sensor

Another possibility is to provide a built-in electrical safety device for the electrical appliance. In particular, the electrical device may include: a housing, electrical components within the housing configured to operate the electrical device, a thermal sensor configured to detect the surface temperature of the electrical components, and a processor associated with the thermal sensor, the processor configured to determine when the measured surface temperature exceeds a predetermined threshold.

In particular, the electrical appliance may be a microwave oven, gas or electric oven, boiler, consumer unit, dishwasher, refrigerator and/or freezer, washing machine, tumble dryer or charger.

The temperature sensor is an infrared array sensor as described above, which is positioned inside an electrical appliance so as to provide a non-contact measurement of the surface temperature of the internal electrical components of the device. The temperature sensor is mounted so that it is directed towards internal electrical components that are most prone to overheating, such as one or more of the following: motor, heater, power supply, fuse, and wiring circuitry. The temperature sensor uses a lens so that it has a field of view to cover a substantial portion of the electrical components being monitored. An internal electrical safety device built into an electrical appliance works in exactly the same way as the electrical safety devices described above, except that it is directed to a specific internal electrical component and not to the appliance plug, so the above description also applies to an electrical appliance. with built-in temperature sensor.

The electrical device also has a wireless communication channel, so it can be integrated into the electrical safety system described above to provide the processes and benefits described above.

Additional Provisions Defining Aspects of the Invention

The system according to the present invention comprises hazard detection devices and hazard mitigation devices connected via a network. The devices of the system have wireless networking capabilities to communicate with each other and with external mobile communication devices such as a smartphone. Communication between devices can be direct using a local network or can be through a remote server.

The electrical safety plug adapter includes a socket configured to receive a plug of an external device and a plug portion capable of being inserted into an external power supply socket such as a mains wall socket. The plug adapter is typically configured to provide a selective electrical connection between an electrical appliance (external device) and a household electrical outlet (mains wall outlet).

The adapter device contains at least one hazard detection sensor that is capable of detecting a potential hazard and disconnecting the external device from the network source. Thus, the adapter device can provide local detection of a hazard and prevent the development of a hazard by an external device. For example, if the refrigerator fires, the power to the refrigerator can be turned off to prevent the ignition conditions of the refrigerator from aggravating. In addition, there is a greater likelihood of detecting a hazard earlier than with conventional detection systems because the sensors are closer to the possible causes of the hazard.

The socket and plug are connected by means of an internal adapter circuit. The internal circuitry may include a relay configured to selectively control the current between the plug and socket. Alternative means are also provided for selectively turning off power to external devices. The internal circuitry may also contain components for wireless communications, such as radio mesh, Wi-Fi, and Bluetooth chipsets.

The adapter also contains a built-in array of hazard detection sensors such as CO, CO2, smoke, gas, temperature, flame and water sensors. Each of the sensors is connected via an internal circuit to the system network.

The smoke sensor is configured to detect levels of smoke in the environment and may include sensing components configured to use optical detection methods (such as photoelectric detection) and/or physical detection methods (such as ionization). When the measured ambient smoke level exceeds a threshold, the smoke detector communicates with internal circuitry to indicate a risk of fire.

The gas sensor is configured to detect levels of hazardous gases in the environment, such as combustible, flammable, and toxic gases. The gas sensor may include sensing components configured to use any or a combination of electrochemical, pellistor, photoionization, infrared, and semiconductor detection methods. When the detected level of dangerous gas in the environment exceeds the threshold, the gas sensor communicates with the internal circuitry to indicate the risk of gas leakage or fire risk.

The carbon monoxide sensor is configured to detect the level of carbon monoxide (CO) in the environment. The CO sensor may include sensing components configured to use any or a combination of bionic, electrochemical, optochemical, and semiconductor based detection methods. When the measured CO level in the environment exceeds a threshold value, the CO sensor communicates with internal circuitry to indicate a risk of CO leakage or a risk of fire.

The temperature sensor is configured to detect environmental thermal energy levels and may include sensing components configured to use mechanical and/or semiconductor heat measurement techniques. The temperature sensor is capable of detecting the surface temperature or open flame of any electrical appliance or a malfunction of the appliance, which, in turn, can lead to a short circuit and possible fire. When the measured ambient thermal energy level exceeds a threshold, the thermal sensor communicates with internal circuitry to indicate a risk of fire.

Optional thermal sensors can monitor connections within the device to detect abnormal current or local conditions that create a hazard. An optional infrared thermal sensor can create a thermal image of an area and detect a hazard before it spreads.

In the event that one of the on-board sensors detects a parameter indicating a potential danger and/or fire, the adapter automatically activates the relay so that the electrical connection between the plug and socket is interrupted. This ensures that when a potential hazard is detected by the adapter, power to the potentially hazardous device is immediately cut off.

The adapter can also be connected via radio mesh, Wi-Fi, or Bluetooth chipsets to the system network. The adapter can be connected via Wi-Fi to the Internet or a local network, with each device connected to other devices or to a central server. There may be a mesh network module that allows the adapter to communicate in the room with a device, such as a disconnect unit, described below, or a central hub located in the room that communicates with all devices in the room.

If a wireless device such as a smartphone is connected to the network, the adapter can communicate with the wireless device to send an alarm. Typically, such an alarm may be a visual and/or audible signal.

The adapter may also contain one or more LEDs to indicate the status of the adapter. For example, one LED may indicate an alarm condition, another LED may indicate a normal condition, and another LED may indicate communication.

The adapter may be configured to supply power from a wall outlet to various household appliances. For example, the adapter may be configured to connect to a power source, coffee machine, microwave oven, kettle, extension cords, toaster, hair straightener, washing machine, dishwasher, wall mounted boiler, electric oven, dryer, refrigerator/freezer, or consumer unit.

Alternatively, the internal circuitry, wireless communication module, and hazard detection sensors described above may be built into a combined wall outlet. During operation, if a hazardous level of fire, water, CO or CO2 is detected locally or from any other remote device on the network, the built-in wall outlet will automatically turn off to cut off power to any connected appliances. As with other devices on the network, the wireless module allows the built-in wall outlet to communicate wirelessly via Wi-Fi and 868 MHz narrowband radio in a mesh network with other devices on the network.

In another example, the internal circuitry, wireless communication module, and hazard detection sensors described above may be installed in a docking station. The docking station may also include a connector allowing connection to an external mobile communication device, such as a smartphone. During operation, if a dangerous level of fire, water, CO or CO2 is detected locally or from any other remote device on the network, the docking station will sound an alarm from the built-in speaker. If an external mobile communication device is connected to the docking station, when a danger is detected, the docking station can also send a signal to the mobile communication device to generate an alarm from the external device. As with other devices on the network, the wireless module allows the docking station to communicate wirelessly via Wi-Fi and 868 MHz narrowband radio in a mesh network with other devices on the network.

In addition to disconnecting the local power supply from a connected instrument or external device, the internal circuitry may also be configured to send a disconnect message to a remote device or disconnect unit. The trip unit may be configured to eliminate the condition causing the hazard or another aspect that may exacerbate the hazard.

For example, a water sensor located on the kitchen floor and connected to an adapter can detect water and remotely actuate a valve that shuts off the building's mains water supply to prevent further flood damage. In addition, the detection of a fire hazard by smoke or fire detectors can lead to a shutdown of the gas supply, exacerbating the consequences of a fire.

The shutdown unit may include a wireless communication module and one or more check valves. The shutdown unit is configured to be installed in a fluid supply system, such as water pipes, to control the flow of fluid through the fluid supply system. For example, a shut-off unit may be installed on a water pipe that supplies water to an appliance such as a dishwasher or washing machine. In other examples, the shutdown unit may be installed on supply pipes, such as water pipes supplying mains water, at the outlet of a pressurized water tank, or in a gas supply network. The disconnect unit can also be part of the power supply system and remotely cut off the power supply in the room, for example, using a residual current device.

The wireless communication module of the trip unit may be a dual communication module. In particular, it can be a narrowband mesh radio network and a central processing unit.

The trip unit may also include one or more LEDs to indicate the status of the trip unit. For example, one LED may indicate an alarm condition, another a normal condition, and a third a communication.

During operation, the trip unit may respond to a wireless communication signal from a detection device, such as a plug adapter, which indicates that a potential hazard has been detected. Upon receiving such a signal, the trip unit can close or open the shut-off valve. The disconnect unit may also send a communication message through the network back to the discovery device or to a mobile communication device such as a smartphone.

In some examples, the shutdown unit itself may also comprise one or a combination of the hazard detection sensors described above, configured to detect levels of hazard parameters. In this case, when a leak or other hazard is detected, the shutdown unit can respond to this local detection to actuate the shut-off valve. The shutdown unit may also communicate using a wireless communication module with other devices in the network/system to actuate other valves or to send a message to a wireless communication device such as a smartphone.

Typically, the block valve of the shutdown unit is a motorized valve configured to shut off the mains water supply if a leak is detected locally or from any other remote device in the network/system.

Each of the devices in the system, including the local adapter and the remote shutdown unit, may contain one or more central processing units or microprocessors that perform the functions described above. The processors may execute instructions stored on a computer-readable medium. Devices may include a watchdog processor that resets the radio or Wi-Fi modules.

Claims (47)

1. An electrical safety system comprising a plurality of electrical safety devices and one or more remote devices, the electrical safety devices comprising: a socket configured to receive a power plug of an electrical appliance for connecting a current source to an electrical appliance, a thermal sensor configured to detect the surface temperature of the power plug when it is inserted into the socket, a processor associated with the temperature sensor and configured to determine when the measured surface temperature exceeds a predetermined threshold, and a wireless communication channel, wherein the electrical safety devices are configured to send a signal to remote devices using the wireless communication channel when the processor determines that the surface temperature of the power plug has exceeded a predetermined threshold, wherein the electrical safety devices and the remote devices form a mesh network in which the electrical safety devices and the remote devices can communicate with each other. 2. The electrical safety system of claim 1, wherein the temperature sensor of each electrical safety device is an infrared sensor. 3. The electrical safety system according to claim 2, in which the thermal sensor is an infrared camera containing an array of thermopile detector pixels. 4. An electrical safety system according to any one of the preceding claims, wherein the temperature sensor of each electrical safety device is configured to non-contactly measure the surface temperature of the power plug when it is inserted into a socket. 5. The electrical safety system according to claim 4, in which the electrical safety devices also contain a housing, and the socket is made in the surface of the housing, and the temperature sensor is configured to determine the temperature in the area external to the housing, at the location of the socket. 6. The electrical safety system according to claim 5, in which the socket contains a plurality of holes, and the temperature sensor is located inside the housing between the holes of the socket and is directed out of the housing so as to determine the temperature of the front surface of the power plug when it is inserted into the socket. 7. The electrical safety system according to claim 5, in which the thermal sensor of the electrical safety device is located on the surface of the housing near the socket and is directed along the outer surface of the housing to determine the temperature of the side surface of the power plug when it is inserted into the socket. 8. An electrical safety system according to any one of the preceding claims, wherein one or more of the electrical safety devices is a plug-in adapter block comprising: a plug portion configured to be inserted into a mains electrical outlet, the male portion being positioned relative to the outlet such that the mains plug of the electrical appliance can be inserted into a socket of the electrical safety device when the male portion is inserted into the mains outlet. 9. The electrical safety system according to any one of paragraphs. 1-7, wherein one or more of the electrical safety devices is a wall outlet faceplate. 10. An electrical safety system according to any one of the preceding claims, also comprising: a relay switch configured to turn off the supply of mains current to an electrical appliance connected to the electrical safety device when the processor determines that the surface temperature of the mains plug exceeds a predetermined threshold. 11. An electrical safety system according to any one of the preceding claims, wherein the electrical safety devices also comprise: smoke and/or gas detector, carbon monoxide sensor and current sensor, wherein the processor is configured to determine whether a respective parameter measured by each sensor exceeds a predetermined threshold value. 12. An electrical safety system according to any one of the preceding claims, wherein the one or more electrical safety devices also includes a water sensor, wherein the one or more electrical safety devices comprises a main body housing a socket, a thermal sensor, and a processor, moreover, the water sensor is configured to be placed on the surface under the main body of the electrical safety device and connected to the main body using a cable or wireless connection. 13. An electrical safety system according to any one of the preceding claims, also comprising an audible and/or visual alarm. 14. An electrical safety system according to any one of the preceding claims, wherein the wireless communication channel is provided by one or more of the following: narrowband radio frequency network, Wi-Fi, and Bluetooth. 15. The electrical safety system of claim 14, wherein the electrical safety devices and remote devices are configured to communicate over both a Wi-Fi network and a narrowband RF network. 16. The electrical safety system of any one of the preceding claims, wherein the at least one remote device comprises an intelligent user device configured to provide an audible or visual alarm upon receiving a signal from the electrical safety device. 17. An electrical safety system according to any one of the preceding claims, wherein at least one remote device comprises a disconnect unit having a communication channel, the disconnect unit being configured to restrict the flow of water, gas or electricity through it upon receipt of a signal from the electrical safety device. 18. The electrical safety system according to claim 17, in which at least one shutdown unit is a local water supply shutdown unit, configured to be installed at the location of the local water supply connection to an electrical appliance, while the local water supply shutdown unit comprises: cable or wireless connection to connect to an electrical safety device and electric valve, wherein the local water shutoff unit is configured to close the motorized valve to restrict water supply to the electrical appliance upon receiving a signal from the electrical safety device. 19. The electrical safety system according to claim 17 or 18, in which at least one disconnect unit is a network supply disconnect unit, comprising: at least one motorized valve configured to be installed in a water supply network, in a pressurized water tank or in a gas supply network, wherein the mains supply cut-off unit is configured to close the motorized valve to limit the mains supply upon receipt of a signal from the electrical safety device. 20. The electrical safety system according to any one of paragraphs. 17-19, in which at least one shutdown unit is a mains power supply cutoff unit, comprising: network electrical switch, wherein the power supply cut-off unit is configured to actuate the electric switch to cut off the power supply upon receipt of a signal from the electrical safety device. 21. The electrical safety system according to claim 20, in which the network power supply disconnection unit is connected to the network consumer unit and is configured to actuate the network switch on the network consumer unit to disconnect the network power supply. 22. The electrical safety system according to any one of paragraphs. 17-21, in which the shutdown unit contains a processor and one or more local sensors, which is one or more of the following sensors: temperature sensor, smoke and/or gas detector, carbon monoxide sensor, humidity and/or water sensor and current sensor, wherein the shutdown unit is configured to restrict the flow of water, gas, or electricity when the processor determines that a parameter measured by the local sensor exceeds a predetermined threshold.

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