CN202986694U - Tire pressure monitor based on Bluetooth signals - Google Patents
Tire pressure monitor based on Bluetooth signals Download PDFInfo
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- CN202986694U CN202986694U CN 201220675933 CN201220675933U CN202986694U CN 202986694 U CN202986694 U CN 202986694U CN 201220675933 CN201220675933 CN 201220675933 CN 201220675933 U CN201220675933 U CN 201220675933U CN 202986694 U CN202986694 U CN 202986694U
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Abstract
The utility model discloses a tire pressure monitor based on Bluetooth signals. The tire pressure monitor based on Bluetooth signals comprises a pressure sensing module, a first conditioning module, a Bluetooth module and a transmitting module, wherein the pressure sensing module is used for collecting tire air pressure signals; the first conditioning module is connected with the pressure sensing module, and is used for conditioning and amplifying the air pressure signals; the Bluetooth module is connected with a conditioning circuit, and is used for processing the amplified air pressure signals into Bluetooth signals; and the transmitting module is connected with the Bluetooth module, and is used for transmitting the Bluetooth signals. Compared with the prior art, the tire pressure monitor based on Bluetooth signals provided by the utility model has the advantages of small volume, electricity conservation, long transmitting distance, great transmitting bandwidth, adaptive frequency hopping, good cross stalk and interference resistance, high multipath fading resistance and the like, and is greatly improved in the stability and reliability.
Description
Technical field
The utility model relates to the tire pressure monitor of power actuated vehicle, relates in particular to a kind of tire pressure monitor that utilizes 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.Concussion frequency due to the crystal oscillator in transmitter and receiver circuit, temperature influence is larger, easily producing temperature floats, and passing in time can be because of the aging error that produces, these all can cause the working frequency points drift, make the working frequency points of transmitter and receiver can not drop on this very narrow working band, thereby cause system unstable, can not communicate by letter even 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, develop a kind of long-term stability, reliability is high and cost performance is high tire pressure monitor is the technical matters of needing in the industry solution badly.
The utility model content
The utility model is to solve the problems of the technologies described above, and proposes a kind of tire pressure monitor that utilizes Bluetooth signal to carry out communication.
For solving the problems of the technologies described above, the technical scheme that the utility model proposes is a kind of tire pressure monitor based on Bluetooth signal of design, and it 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 Bluetooth signal in order to the air pressure signal after amplifying; Transmitter module connects bluetooth module, in order to launch Bluetooth signal.
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 can adopt same chip.
Described the first conditioning module and the second conditioning module can adopt same chip.
The frequency of described Bluetooth signal is 2.4 to 2.48GHz.
Compared with prior art, the utility model 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, transmission bandwidth are large, AFH, 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.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is made detailed explanation, wherein:
Fig. 1 is the functional block diagram of the utility model preferred embodiment;
Fig. 2 is the circuit diagram of the utility model preferred embodiment.
The specific embodiment
The utility model has disclosed a kind of tire pressure monitor based on Bluetooth signal, and it is that Real-time Collection tire pressure signal sends to the tire pressure signal on 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, the panel computer with bluetooth, and other some handset products.
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 is connected with air in tire, in order to collection wheel air pressure signal; Air pressure signal is faint voltage analog signal, and its amplitude is directly proportional to 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 is launched Bluetooth signal.The frequency of Bluetooth signal is 2.4 to 2.48GHz.
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 be connected with air in 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 Bluetooth signal process F1 filtering.
For reducing the equipment volume lower cost, pressure sensing module and TEMP module adopt same chip in other embodiments.
Above embodiment is only 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 claim scope.
Claims (5)
1. the tire pressure monitor based on Bluetooth signal, is characterized in that, comprising:
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 Bluetooth signal in order to the air pressure signal after amplifying;
Transmitter module connects bluetooth module, in order to launch Bluetooth signal.
2. the tire pressure monitor based on Bluetooth signal as claimed in claim 1, is characterized in that, 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 monitor 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 monitor 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 monitor 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675933 CN202986694U (en) | 2012-12-10 | 2012-12-10 | Tire pressure monitor based on Bluetooth signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675933 CN202986694U (en) | 2012-12-10 | 2012-12-10 | Tire pressure monitor based on Bluetooth signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202986694U true CN202986694U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675933 Expired - Lifetime CN202986694U (en) | 2012-12-10 | 2012-12-10 | Tire pressure monitor based on Bluetooth signals |
Country Status (1)
| Country | Link |
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| CN (1) | CN202986694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-12-10 CN CN 201220675933 patent/CN202986694U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |