CN102963218A - Tyre pressure monitoring system based on bluetooth signal and monitoring method thereof - Google Patents
Tyre pressure monitoring system based on bluetooth signal and monitoring method thereof Download PDFInfo
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- CN102963218A CN102963218A CN2012105275548A CN201210527554A CN102963218A CN 102963218 A CN102963218 A CN 102963218A CN 2012105275548 A CN2012105275548 A CN 2012105275548A CN 201210527554 A CN201210527554 A CN 201210527554A CN 102963218 A CN102963218 A CN 102963218A
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Abstract
The invention discloses a tyre pressure monitoring system based on a bluetooth signal. The tyre pressure monitoring system comprises a tyre pressure monitor which is arranged on a tyre and is used for sending tyre pressure data and a receiving device used for receiving tyre pressure data so as to show, wherein the tyre pressure monitor comprises a pressure sensing module, a first conditioning module, a bluetooth module and a transmitting module, the pressure sensing module is used for collecting a tyre pressure signal, the first conditioning module is connected with the pressure sensing module and is used for conditioning and amplifying an air pressure signal, the bluetooth module is connected with the conditioning circuit and is used for processing the air amplified pressure signal after amplifying into a bluetooth signal embedded with an equipment ID code, and the transmitting module is connected with the bluetooth module and is used for transmitting a bluetooth signal. The invention also discloses a monitoring method of the tyre pressure monitoring system. The tyre pressure monitoring system provided by the invention has the advantages that the volume is small, the electricity is saved, the transmission distance is far, the transmission bandwidth is large, the anti-interference property is good, the antimultipath decadent capability is strong and the like, the stability and reliability of the tyre pressure monitor are greatly improved, meanwhile, the use is flexible, and multiple receiving devices are utilized to monitor the tyre pressure data.
Description
Technical field
The present invention relates to the tire pressure monitoring system of power actuated vehicle, relate in particular to a kind of tire pressure prison system and monitoring method of utilizing Bluetooth signal to carry out communication.
Background technology
At present, various vehicles, especially car generally are equipped with system for monitoring pressure in tyre (TPMS), and with the variation characteristic of the tire pressure of understanding vehicle, for vehicle safety monitoring provides foundation, the car owner adjusts tire pressure and regulation speed accordingly.The long-time stability of monitoring system work and reliability are most important indexs.Existing system for monitoring pressure in tyre (TPMS) all uses 433,000,000, the 868000000 and 915,000,000 low frequency and narrow bandwidth communication technologys.433,000,000 is old products of field of data transmission, is used for doing data transmission and has huge hidden danger: 433,000,000,868,000,000 and 915,000,000 system communications are backward in technique, and the system communication technology adopts the arrowband amplitude modulation technology that falls behind, generally at 5-25Khz; It adopts single-frequency point work, can not effectively resist the multipath effect that produces because blocking, and causes communication unreliable, and system is unstable; Channel is very crowded, and ambient interference is large especially.Interphone, vehicular communication equipment, amateur communication equipment etc. all concentrate on here, thereby ambient interference are very large; Frequency drift problem is serious, and imprecise test can't find, and short-term is used and may do not seen, long-term use must manifest; Power consumption is large in addition, and emitter and antenna volume are huge, and a large amount of use meetings bring impact to the personnel health.The transmitting set of system for monitoring pressure in tyre and the working frequency points of wireless receiver all must drop in this very narrow frequency limit, could realize communication to each other, otherwise they just can not intercom mutually each other.Because the concussion frequency of the crystal oscillator in the transmitter and receiver circuit, temperature influence is larger, producing easily temperature floats, and passing in time can be because of the aging error that produces, these all can cause the working frequency points drift, so that the working frequency points of transmitter and receiver can not drop on this very narrow working band, thereby cause system unstable, even can not communicate by letter fully.The problem of floating in order to solve temperature, existing way are to increase a thermostat (thermostatic bath) to reduce the impact that crystal oscillator is subjected to temperature, but this certainly will increase cost.So developing a kind of long-term stability, reliability height and the high tire pressure monitoring system of cost performance is the technical matters of needing in the industry solution badly.
Summary of the invention
The present invention will solve the problems of the technologies described above, and proposes a kind of tire pressure monitoring system and monitoring method of utilizing Bluetooth signal to carry out communication.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of tire pressure monitoring system based on Bluetooth signal of design, it comprises the tire pressure monitor of the transmission tire pressure data that are contained on the tire, the receiving device that receives the tire pressure data and show, described tire pressure monitor comprises: the pressure sensing module, in order to collection wheel air pressure signal; The first conditioning module, the Bonding pressure sensing module is in order to amplify the air pressure signal conditioning; Bluetooth module connects modulate circuit, is processed into the Bluetooth signal of embedded equipment ID code in order to the air pressure signal after will amplifying; Transmitter module connects bluetooth module, in order to launch Bluetooth signal; Described receiving device comprises: receiver module, in order to receive Bluetooth signal; The bluetooth collector connects receiver module, is compiled into digital signal in order to Bluetooth signal is understood; Display module connects the bluetooth collector, in order to show digital signal; Memory device is in order to storage control program; Control module connects respectively control receiver module, bluetooth collector, display module and memory device, and the control program that calls in the memory device is implemented control to all modules.
Described tire pressure monitor also comprises: the TEMP module, in order to gather the tire temperature signal; The second conditioning module connects TEMP module and bluetooth module, in order to temperature signal regulation is zoomed into temperature analog signal; Bluetooth module is processed into Bluetooth signal with temperature analog signal.
Described pressure sensing module and TEMP module adopt same chip.
Described the first conditioning module and the second conditioning module adopt same chip.
The frequency of described Bluetooth signal is 2.4 to 2.48GHz.
Described receiving device is a kind of in smart mobile phone with Bluetooth signal receiving device, vehicle mounted guidance, vehicle-carrying DVD, the panel computer.
The invention allows for a kind of monitoring method of the tire pressure monitoring system based on Bluetooth signal, comprise the monitoring method of tire pressure monitor and the implementation method of receiving device, wherein monitoring method may further comprise the steps:
A, usefulness pressure sensing module collection wheel air pressure signal;
B, with the first conditioning module air pressure signal conditioning is amplified;
C, the air pressure signal after will amplifying with bluetooth module are processed into the Bluetooth signal of embedded equipment ID code;
D, launch described Bluetooth signal with transmitter module;
The implementation method of receiving device may further comprise the steps:
E, receive the Bluetooth signal of described embedded equipment ID code with receiver module;
F, control module are called the control program in the memory device, the ID code in the control bluetooth collector scanning Bluetooth signal, and carry out device pairing, and understand the good Bluetooth signal of pairing, it is compiled as digital signal;
G, control module preservation and foundation are connected with paired device;
H, control module control display module show digital signal.
Compared with prior art, the present invention has adopted the 2.4GHz frequency range bluetooth wide-band spread spectrum technology of global general-use, its bandwidth is existing 433,000,000,868,000,000 and 915,000,000 narrow-band communication systems ground hundred times, have that volume is small and exquisite, power saving, long transmission distance, large, the AFH of transmission bandwidth, anti-crosstalking and the advantage such as good in anti-interference performance, anti-multipath fading ability be strong greatly improved stability and the reliability of tire pressure monitor.Use flexibly simultaneously, can use multiple receiving device monitoring tire pressure data.
Description of drawings
Below in conjunction with drawings and Examples the present invention is made detailed explanation, wherein:
Fig. 1 is the functional block diagram of tire pressure monitor of the present invention;
Fig. 2 is the circuit diagram of tire pressure monitor of the present invention;
Fig. 3 is the inventive method diagram of circuit.
The specific embodiment
The present invention has disclosed a kind of tire pressure monitoring system based on Bluetooth signal, and it is that Real-time Collection tire pressure signal sends to the tire pressure signal on the different equipment by the 2.4GHz frequency range bluetooth transmission means with global general-use take Dynamic Non-Destruction Measurement as the basis.Said different equipment can be smart mobile phone, vehicle mounted guidance, vehicle-carrying DVD, panel computer and other some handset products with bluetooth.
Tire pressure monitoring system comprises the tire pressure monitor of the transmission tire pressure data that are contained on the tire, the receiving device that receives the tire pressure data and show.Referring to Fig. 1, tire pressure monitor comprises: pressure sensing module, the first conditioning module, bluetooth module, the transmitter module of connecting successively.Wherein the pressure sensing module links to each other with air in the tire, in order to collection wheel air pressure signal; Air pressure signal is faint voltage analog signal, and its amplitude is directly proportional with tire pressure air pressure, and the first conditioning module is amplified its conditioning; Air pressure signal after bluetooth module will amplify is processed into Bluetooth signal, and in Bluetooth signal the ID code of embedded equipment so that the identification of Bluetooth signal reception facilities; Transmitter module connects bluetooth module, in order to launch Bluetooth signal.The frequency of Bluetooth signal is 2.4 to 2.48GHz.
Receiving device comprises at least: receiver module, in order to receive Bluetooth signal; The bluetooth collector connects receiver module, is compiled into digital signal in order to Bluetooth signal is understood; Display module connects the bluetooth collector, in order to show digital signal; Memory device is in order to storage control program; Control module connects respectively control receiver module, bluetooth collector, display module and memory device, and the control program that calls in the memory device is implemented control to all modules.
Shown in Fig. 1 is preferred embodiment, and tire pressure monitor also comprises TEMP module and second conditioning module of series connection in this embodiment.The TEMP module gathers the tire temperature signal, and temperature signal is transferred to the second conditioning module, the second conditioning module zooms into temperature analog signal with temperature signal regulation, then this temperature analog signal is transferred to bluetooth module, and bluetooth module is processed into Bluetooth signal with temperature analog signal.This Bluetooth signal comprises three partial informations: device id code information, pressure information, temperature information.
Fig. 2 shows the circuit diagram of preferred embodiment, and the TEMP module is thermally dependent resistor RR1, but the temperature of its perception tire; The pressure sensing module is U6(SM54200), there is an aperture to link to each other with air in the tire on it, with the air pressure in the perception tire; The first conditioning module and the second conditioning module adopt same chip U5, and there are a plurality of op amps: U5A, U5B, U5C, U5D, U5E in its inside, and wherein U5A, U5B, U5C are in order to amplify pressure signal, and U5D is in order to nurse one's health temperature signal; Bluetooth module is U1(CSR1000-A3), its 12nd pin input temp analog signal, the 13rd pin input pressure analog signal, the 7th pin output Bluetooth signal.F1 and ANT1 are transmitter modules, are launched by antenna ANT1 after the Bluetooth signal process F1 filtering.
For reducing the equipment volume lower cost, pressure sensing module and TEMP module adopt same chip in other embodiments.
The invention also discloses a kind of monitoring method of the tire pressure monitoring system based on Bluetooth signal, comprise the monitoring method of tire pressure monitor and the implementation method of receiving device, Fig. 3 shows the inventive method diagram of circuit, and it may further comprise the steps:
A, usefulness pressure sensing module collection wheel air pressure signal;
B, with the first conditioning module air pressure signal conditioning is amplified;
C, the air pressure signal after will amplifying with bluetooth module are processed into the Bluetooth signal of embedded equipment ID code;
D, launch described Bluetooth signal with transmitter module;
The implementation method of receiving device may further comprise the steps:
E, receive the Bluetooth signal of described embedded equipment ID code with receiver module;
F, control module are called the control program in the memory device, the ID code in the control bluetooth collector scanning Bluetooth signal, and carry out device pairing, and understand the good Bluetooth signal of pairing, it is compiled as digital signal;
G, control module preservation and foundation are connected with paired device;
H, control module control display module show digital signal.
Described receiving device is can be a kind of in the smart mobile phone with Bluetooth signal receiving device, vehicle mounted guidance, vehicle-carrying DVD, panel computer of different vendor.Corresponding tire pressure monitoring system application software (TPMS application layer software) is installed by different vendor in memory device.Receiving device operation TPMS software by the scanning tire pressure monitor, is confirmed to find tire pressure monitor, receives and understand the data that tire pressure monitor to be paired sends over, and receiving device is set up and preserved with tire pressure monitor and is connected.The tire pressure monitor of traditional TPMS system must match host display that oneself produces and just can read tire data and show.The 2.4GHz frequency range bluetooth tire pressure technology of global general-use of the present invention, need not to match that oneself produces main frame, the electronic product of the different vendors such as the smart mobile phone of whole world band bluetooth, vehicle mounted guidance, vehicle-carrying DVD, panel computer, only need the TPMS application software of downloading-running our company, can both set up communication with tire pressure monitor of the present invention mutually transmits data and tire pressure is presented on the equipment of different vendor, use very flexibly, greatly made things convenient for the user.
Above embodiment only is casehistory, non-providing constraints.Anyly do not break away from the application's spirit and category, and to its equivalent modifications of carrying out or change, all should be contained among the application's the claim scope.
Claims (7)
1. tire pressure monitoring system based on Bluetooth signal, it comprises the tire pressure monitor of the transmission tire pressure data that are contained on the tire, the receiving device that receives the tire pressure data and show, it is characterized in that described tire pressure monitor comprises:
The pressure sensing module is in order to collection wheel air pressure signal;
The first conditioning module, the Bonding pressure sensing module is in order to amplify the air pressure signal conditioning;
Bluetooth module connects modulate circuit, is processed into the Bluetooth signal of embedded equipment ID code in order to the air pressure signal after will amplifying;
Transmitter module connects bluetooth module, in order to launch Bluetooth signal;
Described receiving device comprises:
Receiver module is in order to receive Bluetooth signal;
The bluetooth collector connects receiver module, is compiled into digital signal in order to Bluetooth signal is understood;
Display module connects the bluetooth collector, in order to show digital signal;
Memory device is in order to storage control program;
Control module connects respectively control receiver module, bluetooth collector, display module and memory device, and the control program that calls in the memory device is implemented control to all modules.
2. the tire pressure monitoring system based on Bluetooth signal as claimed in claim 1 is characterized in that, described tire pressure monitor also comprises:
The TEMP module is in order to gather the tire temperature signal;
The second conditioning module connects TEMP module and bluetooth module, in order to temperature signal regulation is zoomed into temperature analog signal; Bluetooth module is processed into Bluetooth signal with temperature analog signal.
3. the tire pressure monitoring system based on Bluetooth signal as claimed in claim 2 is characterized in that, described pressure sensing module and TEMP module adopt same chip.
4. the tire pressure monitoring system based on Bluetooth signal as claimed in claim 2 is characterized in that, described the first conditioning module and the second conditioning module adopt same chip.
5. the tire pressure monitoring system based on Bluetooth signal as claimed in claim 1 is characterized in that, the frequency of described Bluetooth signal is 2.4 to 2.48GHz.
6. the tire pressure monitoring system based on Bluetooth signal as claimed in claim 1 is characterized in that, described receiving device is a kind of in smart mobile phone with Bluetooth signal receiving device, vehicle mounted guidance, vehicle-carrying DVD, the panel computer.
7. the monitoring method based on the tire pressure monitoring system of Bluetooth signal is characterized in that, comprises the monitoring method of tire pressure monitor and the implementation method of receiving device, and wherein monitoring method may further comprise the steps:
With pressure sensing module collection wheel air pressure signal;
With the first conditioning module the air pressure signal conditioning is amplified;
Air pressure signal after will amplifying with bluetooth module is processed into the Bluetooth signal of embedded equipment ID code;
Launch described Bluetooth signal with transmitter module;
The implementation method of receiving device may further comprise the steps:
Receive the Bluetooth signal of described embedded equipment ID code with receiver module;
Control module is called the control program in the memory device, the ID code in the control bluetooth collector scanning Bluetooth signal, and carry out device pairing, and understand the good Bluetooth signal of pairing, it is compiled as digital signal;
Control module preservation and foundation are connected with paired device;
Control module control display module shows digital signal.
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| CN2012105275548A CN102963218A (en) | 2012-12-10 | 2012-12-10 | Tyre pressure monitoring system based on bluetooth signal and monitoring method thereof |
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| CN104361738A (en) * | 2014-10-31 | 2015-02-18 | 广东好帮手电子科技股份有限公司 | Transmission control device for tyre condition information data, and method thereof |
| CN104985994A (en) * | 2015-06-19 | 2015-10-21 | 中山市六源通电子科技有限公司 | Tire pressure sensing system based on intelligent terminal |
| CN106515621A (en) * | 2016-10-20 | 2017-03-22 | 深圳市体数科科技有限公司 | Method and system for monitoring automobile load based on intelligent tire pressure gauge |
| CN106827976A (en) * | 2017-01-20 | 2017-06-13 | 奇瑞汽车股份有限公司 | Automobile tyre inflation prompt system and automobile tyre inflation reminding method |
| CN107015838A (en) * | 2017-05-24 | 2017-08-04 | 深圳市永奥图电子有限公司 | A kind of upgrade-system of sensing device and system for monitoring pressure in tyre |
| WO2019051999A1 (en) * | 2017-09-13 | 2019-03-21 | 深圳市永奥图电子有限公司 | Tire pressure sensor and tire pressure data query method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104361738A (en) * | 2014-10-31 | 2015-02-18 | 广东好帮手电子科技股份有限公司 | Transmission control device for tyre condition information data, and method thereof |
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| CN106515621A (en) * | 2016-10-20 | 2017-03-22 | 深圳市体数科科技有限公司 | Method and system for monitoring automobile load based on intelligent tire pressure gauge |
| CN106827976A (en) * | 2017-01-20 | 2017-06-13 | 奇瑞汽车股份有限公司 | Automobile tyre inflation prompt system and automobile tyre inflation reminding method |
| CN107015838A (en) * | 2017-05-24 | 2017-08-04 | 深圳市永奥图电子有限公司 | A kind of upgrade-system of sensing device and system for monitoring pressure in tyre |
| CN107015838B (en) * | 2017-05-24 | 2023-12-19 | 深圳市永奥图电子有限公司 | Upgrade system of sensing device and tire pressure monitoring system |
| WO2019051999A1 (en) * | 2017-09-13 | 2019-03-21 | 深圳市永奥图电子有限公司 | Tire pressure sensor and tire pressure data query method |
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Application publication date: 20130313 |