CN104175818A - Tire monitoring and transmitting system and transmitting device thereof - Google Patents

Abstract

The invention relates to a tire monitoring transmission system and a transmission device thereof, which comprises a Bluetooth wireless transceiver host with a display interface, wherein the Bluetooth wireless transceiver host generates a corresponding uplink return signal and transmits the uplink return signal to a plurality of transmission devices when scanning an uplink Bluetooth broadcast signal, each transmission device comprises a Bluetooth wireless transceiver module which can continuously transmit the uplink Bluetooth broadcast signal, and after receiving the uplink Bluetooth broadcast signal, the Bluetooth wireless transceiver host receives the uplink return signal correspondingly transmitted and transmits the uplink return signal to a control module so as to control a sensing module to sense tire environment information, generate a corresponding sensing signal and transmit the sensing signal to the Bluetooth wireless transceiver host through the Bluetooth wireless transceiver module to display the state. The data transmission stability can be improved through the Bluetooth wireless transceiver module, and whether the automobile is started or not can be directly detected.

Description

A tire monitoring transmission system and its transmission device

technical field

The invention relates to a monitoring system, in particular to a tire monitoring system and a transmission device for measuring tire status.

Background technique

Tire Pressure Monitoring System (TPMS), as the name suggests, is a tire pressure monitoring system, which can automatically monitor and alarm timely for tire failures such as low tire pressure, high tire pressure, rapid air leakage, and high tire temperature.

In the case of insufficient tire pressure, the tire is easily deformed, resulting in an increase in the contact area between the tire and the ground, increasing the wear of the tire, thereby reducing the life span and increasing the chance of a tire blowout, and the friction will also increase. According to the experimental results, the pressure of the tire per Reducing 3PSI will also increase gasoline consumption by more than 1%. If the tire pressure is too high, it will reduce the grip of the tire, which will easily cause the vehicle to skid and cause accidents. Therefore, the pressure inside the tire is a very important part of driving safety.

In addition to the tire pressure will affect the state of the car, the temperature of the tire will also affect the state of the car. The higher the temperature of the car tire, the lower the strength of the tire, the greater the deformation, the greater the wear of the tire, and the longer the life of the tire. will shorten.

Therefore, maintaining sufficient tire pressure and temperature can not only prevent the occurrence of tire blowout accidents and increase the safety of driving, but also reduce the additional fuel consumption caused by insufficient tire pressure and prolong the service life of tires.

A general tire pressure monitoring system, as shown in Figure 1, includes a tire pressure monitoring device 70, which is installed on the tire of the car. The tire pressure monitoring device 70 includes a tire pressure monitoring unit 72, wherein the tire pressure monitoring unit 72 further includes an angular velocity The sensor 724 can also be a gravitational acceleration sensor. Here, an angular velocity sensor is used as an example to detect whether the vehicle's tires are rotating, thereby detecting whether the vehicle is rotating. If the angular velocity sensor 724 detects that the vehicle tires have rotated, the tire pressure can be activated. The monitoring unit 72 transmits the tire pressure signal to the control unit 74 after monitoring the tire pressure, and the control unit 74 transmits it to an external wireless receiving device 80 through the wireless transmitting unit 76, so that the wireless receiving device 80 can receive the tire pressure signal , wherein the power of the tire pressure monitoring unit 72, the control unit 74 and the wireless transmitting unit 76 is provided by an energy storage unit 78; the above tire pressure monitoring device 70 can only transmit the signal to the wireless receiving device 80, and can only In the direction of transmission, the wireless receiving device 80 cannot transmit the signal back to the tire pressure monitoring device 70, indicating that the wireless receiving device 80 has received the tire pressure signal, so the tire pressure monitoring device 70 cannot confirm whether the tire pressure signal is correctly transmitted to the wireless receiving device. device 80. Furthermore, the wireless transmitting unit 76 of the tire pressure monitoring device 70 cannot be directly transmitted to the wireless communication device. If the tire pressure signal is to be transmitted to the wireless communication device, the signal needs to be transmitted to the wireless receiving unit as shown in FIG. 2 After 82, in addition to a control unit 84 in the wireless receiving device 80, a wireless transmission unit 86 should be added to control the wireless transmission unit 86 to transmit the tire pressure signal to the portable wireless communication device 90 through the control unit 84.

Furthermore, the above-mentioned devices all use the angular velocity sensor 724 to sense whether the tires of the vehicle are started, but the angular velocity sensor is relatively easy to damage, and usually the vehicle can only be sensed to start when the speed of the car is 30 hr/km, and consumes a lot of power.

In view of this, the present invention proposes a tire monitoring transmission system and a transmission device thereof to effectively overcome the above-mentioned problems.

Contents of the invention

The main purpose of the present invention is to provide a tire monitoring transmission system and its transmission device, which enables the external wireless transceiver host to receive signals through Bluetooth, improves the stability and convenience of data transmission, and can directly use Bluetooth signal transmission instead of An angular velocity sensor or a gravitational acceleration sensor is used to detect whether the car is started, which can effectively improve the accuracy of detecting the start of the vehicle.

Another object of the present invention is to provide a tire monitoring transmission system and its transmission device, which uses bluetooth for data transmission, is a low power consumption system, can effectively save electric energy, and has low cost.

To achieve the above purpose, the present invention provides a tire monitoring transmission system, which includes a Bluetooth wireless transceiver host, multiple transmission devices and a sensing module, wherein,

The Bluetooth wireless transceiver host has a display interface. When the Bluetooth wireless transceiver host scans an uplink Bluetooth broadcast signal, it generates a corresponding uplink feedback signal and transmits the signal to multiple transmissions connected to the Bluetooth wireless transceiver host signal. device; wherein each transmission device includes a bluetooth wireless transceiver module and a control module, wherein,

The Bluetooth wireless transceiver module can continuously send the uplink Bluetooth broadcast signal, and after receiving the uplink Bluetooth broadcast signal after the Bluetooth wireless transceiver host starts, receives the uplink feedback signal correspondingly transmitted according to the uplink Bluetooth broadcast signal, and transmits the uplink feedback signal to In the control module electrically connected to the Bluetooth wireless transceiver module, the control module generates a start control signal according to the uplink feedback signal

The sensing module is electrically connected to the control module to start sensing tire environment information according to the start control signal, and generate a corresponding sensing signal to the control module, which then transmits the sensing signal to the Bluetooth wireless transceiver through the Bluetooth wireless transceiver module The host is used to display the environmental information of the tire on the display interface.

To achieve the above purpose, the present invention also provides a transmission device for a tire monitoring transmission system, which includes a Bluetooth wireless transceiver host, and generates a corresponding uplink return signal when the Bluetooth wireless transceiver host scans an uplink Bluetooth broadcast signal, And transmit the uplink feedback signal to a Bluetooth wireless transceiver module, which continuously sends the uplink Bluetooth broadcast signal, and after the Bluetooth wireless transceiver host receives the uplink Bluetooth broadcast signal, receives the corresponding uplink feedback signal transmitted, and then transmits the uplink broadcast signal The delivery signal is transmitted to the control module electrically connected with the Bluetooth wireless transceiver module, so that it generates a start control signal according to the uplink feedback signal and transmits it.

The following will be described in detail through specific embodiments, so that it is easier to understand the purpose, technical content, characteristics and effects of the present invention.

Description of drawings

Fig. 1 is the block diagram of existing tire pressure detection system;

2 is a block diagram of another existing tire pressure detection system;

Fig. 3 is the block diagram of transmission device of the present invention;

Fig. 4 is a block diagram of the tire pressure monitoring system of the present invention;

Fig. 5 is a schematic diagram of the usage state of the tire pressure monitoring system of the present invention;

Fig. 6 is a schematic diagram showing the bluetooth wireless transceiver master used in the present invention.

Explanation of reference signs: 1-tire monitoring transmission system; 10-Bluetooth wireless transceiver host; 12-display interface; 20-transmission device; 22-Bluetooth wireless transceiver module; 24-control module; 26-sensing module; 262-tire Pressure sensor; 264-tire temperature sensor; 266-voltage sensor; 28-energy storage unit; 30-vehicle; 32-tire; 34-tire; 36-tire; 38-tire; 70-tire pressure monitoring device; 72-tire Pressure monitoring unit; 724-angular velocity sensor; 74-control unit; 76-wireless transmission unit; 78-energy storage unit; 80-wireless receiving device; 82-wireless receiving unit; 84-control unit; 86-wireless transmission unit; 90 - Wireless communication means.

Detailed ways

Please refer to Fig. 3, as shown in the figure, the transmission device of the tire monitoring transmission system in this embodiment includes a Bluetooth wireless transceiver host 10, when the Bluetooth wireless transceiver host 10 scans an uplink Bluetooth broadcast signal, it can generate a corresponding The uplink feedback signal, and transmit the uplink feedback signal to the Bluetooth wireless transceiver module 22 in a transmission device 20; the Bluetooth wireless transceiver module 22 can continuously send the uplink Bluetooth broadcast signal for the Bluetooth wireless transceiver host 10 to scan whether it is received Uplink Bluetooth broadcast signal, if the Bluetooth wireless transceiver host 10 receives the uplink Bluetooth broadcast signal, it will transmit an uplink return signal corresponding to the uplink Bluetooth broadcast signal to the Bluetooth wireless transceiver module 22, and the Bluetooth wireless transceiver module 22 will transmit the uplink return signal To the control module 24 electrically connected with the Bluetooth wireless transceiver module 22, so that it generates a start control signal according to the uplink feedback signal and transmits it.

Next please refer to FIG. 4 , as shown in the figure, the above-mentioned transmission device is directly used in a tire monitoring transmission system 1 in this embodiment. This tire monitoring transmission system 1 includes a Bluetooth wireless transceiver host 10, which can be a smart phone. Or the host installed on the vehicle, the Bluetooth wireless transceiver host 10 has a display interface (not shown in the figure), wherein the display interface can be a light signal or a liquid crystal display screen. Scanning on several frequency bands, when an uplink Bluetooth broadcast signal is scanned, an uplink return signal corresponding to the uplink Bluetooth broadcast signal is generated, wherein the uplink return signal includes an identity tag signal and a password corresponding to the identity tag, Bluetooth wireless The transceiver host 10 transmits the uplink reply letter to a plurality of transmission devices 20 signal-connected with the Bluetooth wireless transceiver host 10 . Each transmission device 20 includes a Bluetooth wireless transceiver module 22, which can continuously send uplink Bluetooth broadcast signals to the Bluetooth wireless transceiver host 10, so that the Bluetooth wireless transceiver host 10 transmits a corresponding uplink feedback signal to the Bluetooth wireless receiver according to the uplink Bluetooth broadcast signal. In the transceiver module 22; the Bluetooth wireless transceiver module 22 transmits the uplink feedback signal to the control module 24 electrically connected to the Bluetooth wireless transceiver module 22, so that the control module 24 generates a start control signal according to the uplink feedback signal; a sensing The module 26 is electrically connected to the control module 24, so as to start sensing the tire environment information according to the start control signal generated by the control module 24, and generate a corresponding sensing signal, and send the sensing signal back to the control module 24, It transmits the sensing signal to the Bluetooth wireless transceiver host 10 through the Bluetooth wireless transceiver module 22, and displays the tire environment information in the sensing signal on the display interface (not shown); an energy storage unit 28, an electric Connect the control module 24, the Bluetooth wireless transceiver module 22 and the sensing module 26 to provide power to the control module 24, the Bluetooth wireless transceiver module 22 and the sensing module 26; wherein the sensing module 26 further includes a tire pressure sensor 262 to generate pressure data by sensing tire pressure, a tire temperature sensor 264 to generate temperature data by sensing tire temperature, and a voltage sensor 266 to generate voltage data by sensing the voltage of the energy storage unit 28 .

In addition, this case has a prevention and control mechanism to avoid repeated transmission of meaningless signals between the Bluetooth wireless transceiver module 22 and the Bluetooth wireless transceiver host 10. This mechanism can reduce power consumption and equipment loss; the prevention and control mechanism is as follows, When the bluetooth wireless transceiver module 22 releases an uplink bluetooth broadcast signal exceeding a predetermined number of broadcast times, the present embodiment is 10 times, if the bluetooth wireless transceiver module 22 continuously releases the broadcast signal and reaches 10 times without receiving the bluetooth wireless transceiver host 10 The returned uplink feedback signal indicates that the Bluetooth wireless transceiver host 10 has been turned off, which means that the car has entered an engine-off state, and the transmission device 20 and the sensing module 26 have stopped operating, and are waiting for the next Bluetooth wireless transceiver host 10 to receive the signal. The returned uplink feedback signal can ensure that the transmission device 20 and the sensing module 26 only work when the car is running, thereby reducing labor consumption and improving the service life of the battery; the Bluetooth wireless transceiver module 22 can also stop transmitting tire environment information and broadcasting at the same time Signal.

On the other hand, the Bluetooth wireless transceiver host 10 also has a prevention and control mechanism. If the Bluetooth wireless transceiver host 10 does not receive the uplink Bluetooth broadcast signal for more than a predetermined time, the preset time in this embodiment is 5 minutes. If the Bluetooth wireless transceiver host 10 does not receive the uplink Bluetooth When the broadcast signal reaches 5 minutes, it means that the Bluetooth wireless transceiver module 22 has not sent the uplink Bluetooth broadcast signal, indicating that the Bluetooth wireless transceiver module 22 may be damaged or closed, and the Bluetooth wireless transceiver host 10 can notify the user at this time, prompting the user to check the Bluetooth wireless Whether the transceiver module 22 is damaged.

After the structure has been described, the use state of this embodiment will be described next. Please refer to Fig. 4 and Fig. 5. As shown in the figure, in this embodiment, the transmission device 20 is arranged on the air blowing pipe of each tire of the vehicle 30 (not shown in the figure) ), the vehicle 30 in this embodiment is a four-wheel vehicle, so there are four sets of transmission devices 20, and the transmission devices 20 are respectively arranged on the four tires 32-38 to sense the pressure and temperature in the tires 32-38 The present embodiment uses the tire 32 as an example description, the Bluetooth wireless transceiver module 22 in the transmission device 20 will start simultaneously when the vehicle 30 is started, and the Bluetooth wireless transceiver module 22 will begin to repeatedly release an uplink Bluetooth broadcast signal; While the vehicle 30 is starting, the Bluetooth wireless transceiver host 10 also begins to scan. When the Bluetooth wireless transceiver host 10 scans the uplink Bluetooth broadcast signal sent by the transmission device 20 in the tire 32, it indicates that the vehicle 30 has been detected. The wireless transceiver host 10 then transmits the uplink return signal corresponding to the uplink Bluetooth broadcast signal to the Bluetooth wireless transceiver module 22 in the corresponding tire 32, and the Bluetooth wireless transceiver module 22 can match the identity tag signal in the uplink return signal with the corresponding identity volume Confirmation of the target password can avoid signal transmission errors and false activation of the sensing module 26; after the Bluetooth wireless transceiver module 22 receives the uplink feedback signal and confirms the identity tag signal and the password of the corresponding identity tag, the control module 24 promptly responds to the uplink feedback signal Generate a starting control signal; the control module 24 transmits the starting control signal to the sensing module 26, so that the sensing module 26 starts to sense the environmental state according to the starting control signal, and generates a corresponding sensing signal, wherein the sensing signal Including the pressure data generated by a tire pressure sensor 262, the temperature data generated by a tire temperature sensor 264 and the voltage data generated by a voltage sensor 266, the sensing module 26 will measure a predetermined number of measurements during measurement. The number of measurements is 4 times. The control module 24 controls the sensing module 26 to measure the pressure data, temperature data and voltage data for 4 times respectively, and then averages the pressure data, temperature data and voltage data for 4 times respectively, and finally obtains the transmission data. The sensing signal; the control module 24 transmits the sensing signal to the Bluetooth wireless transceiver module 22: to make the Bluetooth wireless transceiver host 10 receive the sensing signal, and display the status in the sensing signal on the display interface 12.

Next please refer to Fig. 6, the Bluetooth wireless transceiver host 10 in the present implementation is a mobile phone, the display interface 12 of the mobile phone displays the state of each tire, and the display screen is then as shown in Fig. 6, because each transmission device has different identification data , so the tires can be distinguished, so that the current state of each tire can be displayed correspondingly in the display interface 12 of the mobile phone.

In summary, the present invention can enable the external wireless transceiver host to receive signals through Bluetooth, improve the stability and convenience of data transmission, and can directly use Bluetooth signal transmission to replace the angular velocity sensor to detect whether the car is started. The accuracy of detecting vehicle startup is effectively improved, and the present invention uses bluetooth for data transmission, which is a low power consumption system, can effectively save electric energy, and has low cost.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. Therefore, all equivalent changes or modifications based on the features and spirit described in the claims of the present invention shall be included in the protection scope of the present invention.

Claims (15)

1. A tire monitoring transmission system, characterized in that it comprises a bluetooth wireless transceiver host, a plurality of transmission devices and a sensing module, wherein, The Bluetooth wireless transceiver host is provided with a display interface. When the Bluetooth wireless transceiver host scans an uplink Bluetooth broadcast signal, it generates a corresponding uplink feedback signal and sends it out; A plurality of transmission devices respectively form a signal connection with the Bluetooth wireless transceiver host, and each of the transmission devices includes a Bluetooth wireless transceiver module and a control module, wherein, The Bluetooth wireless transceiver module continues to send the uplink Bluetooth broadcast signal, and receives the corresponding uplink return signal after the Bluetooth wireless transceiver host receives the uplink Bluetooth broadcast signal; The control module is electrically connected to the Bluetooth wireless transceiver module to generate a start control signal according to the uplink feedback signal; The sensing module is electrically connected to the control module, so as to start sensing tire environment information according to the start control signal, and generate a corresponding sensing signal to the control module, which then transmits the sensing signal through the Bluetooth wireless transceiver module to the Bluetooth wireless transceiver host and displayed on the display interface. 2. The tire monitoring transmission system as claimed in claim 1, wherein the upstream feedback signal further includes an ID tag signal and a password signal corresponding to the ID tag. 3. The tire monitoring transmission system as claimed in claim 1, further comprising an energy storage unit electrically connected to the control module, the Bluetooth wireless transceiver module and the sensing module. 4. The tire monitoring transmission system as claimed in claim 3, wherein the sensing module further comprises a tire pressure sensor to sense tire pressure to generate pressure data; a tire temperature sensor to sense tire temperature to generate temperature data; and A voltage sensor is used to sense the voltage of the energy storage unit to generate voltage data. 5. The tire monitoring transmission system as claimed in claim 4, wherein the sensing module measures a predetermined number of measurements, and the control module averages a plurality of pressure data, a plurality of temperature data, and a plurality of voltages of the predetermined number of measurements. The data is averaged to generate the sensing signal. 6. The tire monitoring transmission system as claimed in claim 1, wherein if the Bluetooth wireless transceiver module has not received the uplink feedback signal after releasing the uplink Bluetooth broadcast signal for more than a predetermined number of times, it means that the Bluetooth wireless transceiver host closed. 7. The tire monitoring transmission system according to claim 1, wherein if the Bluetooth wireless transceiver host does not receive the uplink Bluetooth broadcast signal for more than a predetermined time, it indicates that the Bluetooth wireless transceiver module is damaged or turned off. 8. A transmission device for a tire monitoring transmission system, characterized in that it includes a Bluetooth wireless transceiver host, which generates a corresponding uplink return signal and sends it out when scanning an uplink Bluetooth broadcast signal. Transmission devices include: A Bluetooth wireless transceiver module, which continuously sends the uplink Bluetooth broadcast signal, and receives the corresponding uplink return signal after the Bluetooth wireless transceiver host receives the uplink Bluetooth broadcast signal; and A control module is electrically connected to the Bluetooth wireless transceiver module to generate a start control signal according to the uplink feedback signal and transmit it. 9. The transmission device of the tire monitoring transmission system as claimed in claim 8, wherein the Bluetooth wireless transceiver host further comprises a display interface. 10. The transmission device of the tire monitoring transmission system according to claim 9, further comprising a sensing module, which is electrically connected to the control module, so as to start sensing tire environment information according to the activation control signal, and generate corresponding The sensing signal is sent to the control module, and then the sensing signal is transmitted to the Bluetooth wireless transceiver host through the Bluetooth wireless transceiver module, and displayed on the display interface. 11. The transmission device of the tire monitoring transmission system according to claim 10, further comprising an energy storage module electrically connected to the control module, the Bluetooth wireless transceiver module and the sensing module. 12. The transmission device of the tire monitoring transmission system as claimed in claim 11, wherein the sensing module further comprises a tire pressure sensor to sense tire pressure to generate pressure data; a tire temperature sensor to sense tire temperature to generate temperature data; and a voltage sensor for sensing the voltage of the energy storage unit to generate voltage data. 13. The transmission device of the tire monitoring transmission system according to claim 12, wherein the sensing module measures a predetermined number of measurements, and the control module averages a plurality of pressure data, a plurality of temperature data, and Multiple voltage data are averaged to generate the sensing signal. 14. The transmission device of the tire monitoring transmission system according to claim 8, wherein if the Bluetooth wireless transceiver module has not received the uplink return signal after releasing the uplink Bluetooth broadcast signal for more than a predetermined number of times, it means that the transmission of the The Bluetooth wireless transceiver host of the uplink feedback signal is turned off. 15. The transmission device of the tire monitoring transmission system according to claim 14, wherein if the Bluetooth wireless transceiver host does not receive the uplink Bluetooth broadcast signal for more than a predetermined time, it indicates that the Bluetooth wireless transceiver module is damaged or turned off.