CN203276484U - An anti-lost wireless communication alarm - Google Patents

Abstract

The utility model relates to a prevent wireless communication alarm of wandering away, it includes a plurality of host computers and a plurality of auxiliary machines, the host computers include main control wireless communication circuit, keying circuit, network communication circuit, display drive circuit and the alarm output circuit who is connected with main control MCU respectively, the outside of host computers is provided with the button, display drive circuit connect the display screen, alarm output circuit connect the alarm, the auxiliary machines including the vice wireless communication circuit of accuse, satellite positioning circuit, button detection circuitry, speed detection circuitry, vibration drive circuit and the sound output circuit that are connected with vice accuse MCU respectively, vibration drive circuit be connected with the motor, sound output circuit be connected with the speaker. The utility model discloses as long as there is other host computers or auxiliary engine to exist in the transmission ability coverage of auxiliary engine, then can go out the various information transfer of current auxiliary engine, ensure every auxiliary engine user homoenergetic and external contact, in time obtain helping.

Description

An anti-lost wireless communication alarm

technical field

The utility model relates to a communication alarm, in particular to an anti-lost communication alarm for monitoring real-time status.

Background technique

Children or the elderly belong to the easily lost group because they are less adapted to self-protection ability or social discrimination ability. With the development of science and technology, some alarms for preventing children from getting lost have come out. In the event of an accident, if the maximum communication range of the main and auxiliary machines is exceeded, the communication will be lost, and the fundamental monitoring and communication functions will be lost, which will greatly reduce the practicality.

Utility model content

In order to solve the above problems, the utility model provides a stable communication alarm device for preventing loss, which can ensure the status of the carrier to receive real-time and stable communication and timely assistance at any time.

The technical scheme that the utility model takes is:

A wireless communication method for preventing loss, comprising the steps of:

a. Multiple hosts and multiple auxiliary machines are set, the main machine and the auxiliary machines are provided with unique identification codes, the auxiliary machines are used to obtain the positioning longitude and latitude coordinates, and the described main machine is used to connect a plurality of subordinate auxiliary machines and obtain each Communication information sent by the subordinate auxiliary machine;

b. Each host sends a query signal to the sub-machines in the coverage area at intervals of a set time, monitors and displays the latitude and longitude coordinates and status of multiple subordinate sub-machines;

c. Each auxiliary machine obtains the latitude and longitude coordinates of the current location, waits for receiving the query signal transmitted by the host machine within the set time, and sends a response signal when receiving the query signal transmitted by the host machine, so as to realize the establishment of the communication connection between the main machine and the subordinate machine;

d. Each sub-machine presets multiple communication frequencies. If the sub-machine does not receive the query signal transmitted by the host within the preset frequency, it will switch to the default transmission frequency according to the current time and transmit to the sub-machine other communication frequencies within the coverage area. The main machine or the auxiliary machine transmits a call signal;

e. Set each host and slave as devices that can be transferred, and the slave that transmits the call signal selects a transfer master or a transfer slave with a stronger signal strength to establish an emergency connection. If the transfer host is selected, the call information will be sent Transfer to the network server; if you choose to connect to the transfer sub-machine, the call information will be transferred to the host to which the transfer sub-machine belongs, and the host will transfer the call information to the network server, wherein the call information includes latitude and longitude Coordinates, emergency contact information and warning messages;

f. Obtain the information of the secondary machine through the network server or the main machine.

Further, each auxiliary machine sets an activity range. When the auxiliary machine is within the active range, it detects the user’s motion state and records the speed data, and submits the recorded data to the host or auxiliary machine that establishes the connection; when the auxiliary machine’s position exceeds When in the active range, the sub-unit submits the current call information to the main unit or sub-unit that establishes the connection.

As a further description, the slave machine judges the distance between the slave machine and the main machine through the latitude and longitude coordinates, or judges the distance between the slave machine and the main machine or the slave machine with which the connection is established based on the signal strength after the connection is established.

As a further description, described step d also includes the following steps: d1. Each communication frequency of the auxiliary machine is provided with a fixed waiting time, and the auxiliary machine waits for the query signal transmitted by the host within the waiting time, if it exceeds the waiting time Modify the communication frequency according to the pre-set communication frequency and wait again; d2. The host computer sets the waiting time, and the waiting time is greater than the waiting time. The state of the connected auxiliary machine, if the obtained state is empty, an alarm prompt will be given and the display screen will be controlled to display the latest position information of the auxiliary machine; among them, step d1 and step d2 have no sequence.

As a further description, the host computer displays the status of the auxiliary machine through the control display screen, and the host gives an alarm prompt when the position of the auxiliary machine exceeds the activity range or the speed data is abnormal; the user terminal queries the status of the auxiliary machine by connecting to the network server.

As a preferred solution, each of the identification codes corresponds to a unique delay time, and the host computer delays the delay corresponding to its own identification code since it receives the response signal or call signal, and the slave machine receives the query signal or call signal. Time to emit signal.

As an optimal solution, the host computer sends a key operation signal to the subordinate auxiliary computer, and the auxiliary computer returns a key detection signal, so as to realize the function setting of the subordinate auxiliary computer by the main computer or the status query of the auxiliary computer.

A kind of anti-lost alarm that uses said method, comprises a plurality of hosts and a plurality of auxiliary machines, and described host comprises interconnected main control MCU and main control wireless communication circuit, and described main frame also comprises respectively with main control MCU Connected key circuit, network communication circuit, display drive circuit and alarm output circuit, the exterior of the host is provided with keys, the display drive circuit is connected to the display screen, the alarm output circuit is connected to the alarm, and the auxiliary machine includes The auxiliary control MCU, the auxiliary control wireless communication circuit and the satellite positioning circuit, the auxiliary control wireless communication circuit and the satellite positioning circuit are connected with the auxiliary control MCU, and the auxiliary control also includes a key detection circuit and a speed detection circuit respectively connected with the auxiliary control MCU , a vibration drive circuit and a sound output circuit, the vibration drive circuit is connected to the motor, and the sound output circuit is connected to the speaker.

Further, the network communication circuit of the host computer communicates with the network server through the wireless network, and the network server is wirelessly connected with the user terminal.

The beneficial effects of the utility model are: when an auxiliary machine is far away from the main machine, as long as there are other main machines or auxiliary machines within the range covered by the transmission of the auxiliary machine, various information of the current auxiliary machine, including position coordinates In addition to using the connection and communication between the sub-machine and the host, it can also establish a connection through other hosts or sub-machines, and use the data forwarding method to forward the status information of the sub-machine, which can ensure that each sub-machine All users of the machine can communicate with the outside world; the main machine can display the current location and status information of the designated auxiliary machine or alarm auxiliary machine through the display screen, and provide alarm prompts. At the same time, the main machine can set and control related functions of the auxiliary machine, and can The information provided by the auxiliary machine is uploaded to the network server, so that users can conveniently use the mobile phone to query the status and location information of the auxiliary machine; in terms of distance judgment, the auxiliary machine can locate the position through satellite positioning or wireless connection strength judgment Or the calculation of the distance can clearly reflect the position of the auxiliary machine; and the method of sending signals according to the delay time of the identification code can ensure that the communication between multiple auxiliary machines and the main machine does not conflict.

Description of drawings

Fig. 1 is a schematic flow chart of the master machine inquiring about the connection state of the subordinate machine of the present utility model;

Fig. 2 is a schematic flow diagram of the auxiliary machine sending a response signal to the host;

Fig. 3 is a schematic flow diagram of establishing a connection between an auxiliary machine and other main machines or auxiliary machines;

Figure 4 is a schematic diagram of the module connection of the host;

Figure 5 is a schematic diagram of the module connection of the auxiliary machine.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

1 to 3 schematically show a schematic view of an embodiment adopted according to the present invention.

A wireless communication method for preventing loss, comprising the steps of:

a. Multiple hosts and multiple auxiliary machines are set, the main machine and auxiliary machines are provided with unique identification codes, the auxiliary machines are used to obtain the positioning longitude and latitude coordinates, and the described main machine is used to connect multiple subordinate auxiliary machines and obtain each Communication information sent by the subordinate auxiliary machine;

b. Each host sends a query signal to the sub-machines in the coverage area at intervals of a set time, monitors and displays the latitude and longitude coordinates and status of multiple subordinate sub-machines;

c. Each auxiliary machine obtains the latitude and longitude coordinates of the current location, waits for receiving the query signal transmitted by the host machine within the set time, and sends a response signal when receiving the query signal transmitted by the host machine, so as to realize the establishment of the communication connection between the main machine and the subordinate machine;

d. Each sub-machine presets multiple communication frequencies. If the sub-machine does not receive the query signal transmitted by the main unit within the preset frequency, it will switch to the default transmission frequency according to the current time and transmit to the sub-machine other communication frequencies within the coverage area. The main machine or the auxiliary machine transmits a call signal;

e. Set each main unit and auxiliary unit as relay devices. When the auxiliary unit and the main unit cannot be connected due to too far away or other wireless interference, the auxiliary unit will automatically search for signals from other nearby main units or other auxiliary units, and transmit the call signal to the auxiliary unit. The machine will select a transfer host or a transfer sub-machine with a strong signal strength to establish an emergency connection. If you choose to connect to the transfer host, the transfer host will transfer the call information to the network server; Relaying the call information to the host computer to which the relay subunit belongs, and the host computer relays the call information to the network server, wherein the call information includes latitude and longitude coordinates, emergency contact information and warning information;

f. Obtain the information of the secondary machine through the network server or the main machine.

Further, each auxiliary machine sets an activity range. When the auxiliary machine is within the activity range, the main control MCU judges the user’s motion status and records the speed data by collecting speed detection data. After reaching a certain amount of data, it passes wireless The communication circuit submits the recorded data to the master or slave that establishes the connection; when the position of the slave exceeds the range of activities, the slave submits the current call information to the master or slave that establishes the connection, and at the same time the slave control MCU controls the sound output circuit to drive the speaker to emit The prompt sound and the control vibration drive circuit output the motor to remind the user that they have left the specified activity range or exceeded the distance set by the host, and return to the designated area as soon as possible.

As a further description, the slave machine judges the distance between the slave machine and the main machine through the latitude and longitude coordinates, or judges the distance between the slave machine and the main machine or the slave machine with which the connection is established based on the signal strength after the connection is established.

Among them, the auxiliary machine first judges the user's activity range or the distance from the main machine through the position coordinates provided by the satellite positioning circuit (such as GPS positioning or Beidou positioning), and the judgment method is as follows:

The host computer sets an activity range parameter to the auxiliary machine, such as a longitude and latitude center coordinate and an effective activity radius. When the auxiliary machine is outside the radius, it will alarm, or an electronic fence coordinate (square, diagonal longitude and latitude coordinates, the auxiliary machine is within the fence. Effective activity area), if it exceeds the alarm, the auxiliary control MCU regularly reads the coordinate data output by the satellite positioning circuit and compares it with the set coordinates. The radius is 0.05 degrees, then the coordinates obtained by the main control MCU of the auxiliary machine from the satellite positioning circuit are compared with this parameter. If the currently obtained latitude is greater than the set latitude of 0.05 degrees or less than the set latitude of 0.05 degrees, it means that it exceeds the specified range. Longitude is judged in the same way.

In the case that the satellite positioning circuit of the auxiliary machine cannot obtain effective positioning coordinate data (such as in the basement, in the room), the wireless communication circuit of the auxiliary machine will simultaneously obtain the radiation intensity of the currently received wireless signal when receiving the query signal sent by the main machine. The wave transmission in the air decreases with the increase of the distance, so the farther away from the main machine, the weaker the signal received by the auxiliary machine. According to this feature, in the absence of satellite positioning, it can be judged according to the strength of the received host query signal. The approximate distance from the host, when the signal is weak to a certain extent, the slave will actively send a feedback signal to the host to confirm the connection status of both parties and evaluate the approximate distance between the slave and the host.

As a further description, described step d also includes the following steps: d1. Each communication frequency of the auxiliary machine is provided with a fixed waiting time, and the auxiliary machine waits for the query signal transmitted by the host within the waiting time, if it exceeds the waiting time Modify the communication frequency according to the pre-set communication frequency and wait again; d2. The host computer sets the waiting time, and the waiting time is greater than the waiting time. The state of the connected auxiliary machine, if the obtained state is empty, an alarm prompt will be given and the display screen will be controlled to display the latest position information of the auxiliary machine; among them, step d1 and step d2 have no sequence.

As a further description, the host computer displays the status of the auxiliary machine through the control screen. The position of the auxiliary machine exceeds the range of activity, the speed data is abnormal, or the host sends an alarm prompt when the user presses a button to call; the user terminal queries the status of the auxiliary machine by connecting to the network server.

Under normal circumstances, the internal program of the main control MCU of the host computer controls the transmitting circuit to transmit an inquiry signal every other set time. The inquiry signal contains the host identification code, encryption code sequence, next transmission frequency (preset The communication frequency), the transmission interval time mark and the response response mark and other information can be received by all the slave machines in the area covered by the wireless transmission signal of the master machine, and the wireless communication circuit of the slave machine will send the data to the master machine after receiving the data The control MCU is decrypted by an internal program to restore the identification code and related information of the transmitted signal. As a preferred solution, each of the identification codes corresponds to a unique delay time. Since the host receives the answer signal or call signal, and Since the auxiliary machine receives the query signal or call signal, it will delay the transmission of the signal for the delay time corresponding to its own identification code. The purpose of delaying the response according to the code is to prevent other auxiliary machines from transmitting response signals at the same time, causing mutual interference and being unable to be received by the main machine. The information also includes data information such as identification codes of the master and slave machines, encryption code sequences, and response signs.

If the auxiliary machine does not receive the query information from the main machine after switching each preset communication frequency and waiting time, the auxiliary control MCU controls the auxiliary control wireless communication circuit to transmit a call signal, which contains the identification code of the auxiliary machine , Encrypted code sequence, abnormal call sign, frequency and time of the next watch, after other masters or slaves receive the signal in the wireless signal coverage area emitted by the slave, after a period of delay according to the own code of the receiving master or slave Return a wireless response signal, after the current sub-machine receives the response signal, select the main or sub-machine with a strong wireless signal to return a signal again to confirm the effective communication connection, and send the current position coordinates to the main or sub-machine that confirmed the connection Data, if the main control MCU of the auxiliary machine judges that the current position coordinates have left the specified range or exceeded the distance of the belonging host, it will also include information such as the phone number and address of the emergency contact person; if the host that is reconfirmed to be connected is not the belonging host, it will be automatically set Emergency connection channel flag, which provides data transfer to the remote network server; if the second confirmation is received, the emergency connection flag is also set, and the data is transferred to the host to which the slave belongs, and then the host submits the data to the remote web server.

As an optimal solution, the host computer sends a key operation signal to the subordinate auxiliary computer, and the auxiliary computer returns a key detection signal, so as to realize the function setting of the subordinate auxiliary computer by the main computer or the status query of the auxiliary computer. When in need of help or in danger, the user can press the corresponding button on the auxiliary machine, and the auxiliary control MCU will send the obtained button information together with the current position coordinates to the connected host through the wireless communication circuit, so that the user can get real-time information. rescue or assistance.

A kind of anti-lost alarm device using the above method, with reference to Fig. 4～Fig. 5, it comprises a plurality of host computers and a plurality of subunits, and described host computer comprises main control MCU and the main control wireless communication circuit that is connected with it, button circuit , network communication circuit, display drive circuit and alarm output circuit, the exterior of the host is provided with buttons, the display drive circuit is connected to the display screen, the host can use the display screen to display the status of the auxiliary machine, and the alarm output circuit is connected to the alarm , the auxiliary machine includes an auxiliary control MCU and an auxiliary control wireless communication circuit connected thereto, a satellite positioning circuit, a button detection circuit, a speed detection circuit, a vibration drive circuit and a sound output circuit, and the vibration drive circuit is connected to the motor , the sound output circuit is connected with the loudspeaker.

Further, the network communication circuit of the host computer communicates with the network server through the wireless network, and the network server is wirelessly connected with the user terminal. Users can log in to the network service platform through a computer or mobile phone to remotely view the relevant information and historical data of the designated auxiliary machine, and can issue command information to the main machine through the network service platform to set the function of the auxiliary machine.

The above embodiments are only intended to illustrate rather than limit the utility model, so all equivalent changes or modifications made according to the method described in the scope of the patent application of the utility model are included in the scope of the patent application of the utility model.

Claims (3)

1. prevent missing wireless telecommunications alarm for one kind, comprise a plurality of main frames and a plurality of slave, described main frame comprises interconnective main control MCU and master control wireless communication line, described slave comprises secondary control MCU, secondary control wireless communication line and satnav circuit, secondary control wireless communication line is connected with secondary control MCU with the satnav circuit, it is characterized in that: described main frame also comprises the network communication circuit that is connected with main control MCU respectively, display driver circuit and alarm output circuit, described display driver circuit connects display screen, described alarm output circuit connects alarm, described slave also comprises the velocity checking circuits that is connected with pair control MCU respectively, vibratory drive circuit and sound out-put circuit, described vibratory drive circuit is connected with motor, described sound out-put circuit is connected with loudspeaker.

2. anti-missing wireless telecommunications alarm according to claim 1, it is characterized in that: described main frame also comprises key circuit, and the outer setting of main frame has button, and described slave also comprises key press detecting circuit.

3. anti-missing wireless telecommunications alarm according to claim 1, it is characterized in that: the network communication circuit of main frame is connected with webserver communication by wireless network, the described webserver and user terminal wireless connections.

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