CN107415604A - TPMS systems and its communication means - Google Patents
TPMS systems and its communication means Download PDFInfo
- Publication number
- CN107415604A CN107415604A CN201710764101.XA CN201710764101A CN107415604A CN 107415604 A CN107415604 A CN 107415604A CN 201710764101 A CN201710764101 A CN 201710764101A CN 107415604 A CN107415604 A CN 107415604A
- Authority
- CN
- China
- Prior art keywords
- frequency
- tpms
- pressure sensor
- signal
- receivers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention discloses a kind of TPMS systems, including：The radiofrequency signal that tyre pressure sensor sends at least two frequencies by predetermined period when TPMS receivers judge that current frequency reception signal has interference signal, is then switched to other frequency reception signals to TPMS receivers.Or, tyre pressure sensor presets multiple frequencies, tyre pressure sensor sends the radiofrequency signal of a certain frequency in default frequency to TPMS receivers by predetermined period, when TPMS receivers judge that current frequency reception signal has interference signal, TPMS receivers actively send frequency handover order to tyre pressure sensor, and tyre pressure sensor switches to other frequencies and sends radiofrequency signal.Frequency conversion and/or frequency modulation technology using in the tpms, can effectively solve the signal interference in vehicle practical application, are improved the antijamming capability of TPMS systems, improve TPMS dependable with function by the present invention.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of TPMS systems.The invention further relates to the tire pressure monitoring system
The communication means of system.
Background technology
System for monitoring pressure in tyre (Tire Pressure Monitoring System, TPMS) is a kind of using wireless
Transmission technology, using the high sensitivity wireless sensing device being fixed in automobile tire driving or it is static in the state of gather vapour
The data such as wheel tyre pressure power, temperature, and transfer data in the main frame in driver's cabin, the real-time display vapour in the form of digitized
The related data such as wheel tyre pressure power and temperature, and when tire occurs abnormal (pre- runflat), carried in the form of buzzing or voice etc.
The driver that wakes up carries out the automobile active safety system of early warning.So that it is guaranteed that the pressure and temperature of tire is maintained in critical field,
The probability for reducing tire of blowing out, ruin is played, reduces the effect of oil consumption and vehicle component damage.
The radio communication between TPMS sensor and controller (receiver) employs single-frequency and communicated at present,
Modulation system has the modes such as ASK and FSK, as Cartronic degree increases, with frequency or the disturbed condition of neighbouring frequency
Become clear day by day, the communication of single-frequency does not possess stronger interference rejection ability, has a strong impact on the normal wireless receiving functions of TPMS.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of TPMS systems that can carry out frequency conversion communication.The present invention also provides
The communication means of the TIPMS systems.
In order to solve the above technical problems, TPMS systems provided by the invention, including tyre pressure sensor and TPMS receivers；
Tyre pressure sensor presses the radiofrequency signal of predetermined period at least two frequencies of transmission to TPMS receivers, when TPMS is received
When device judges that current frequency reception signal has interference signal, then other frequency reception signals are switched to.
TPMS receivers can monitor maximum drop-out time, wireless signal field, the noise letter of each tire signal in real time
The information such as number size, monitor the information obtained by these implementations and judge whether interference signal.
For example tire dropout time max-thresholds are set, the tire dropout time is more than the tire dropout time
Max-thresholds, then judge interference signal be present；
Radiofrequency signal field strength threshold value is set,
Noise signal threshold value etc.), receiver can decide whether interference signal be present.
Further improve, TPMS receivers have MCU and RF reception chips.
Another TPMS systems provided by the invention, including tyre pressure sensor and TPMS receivers；Tyre pressure sensor is preset
Multiple frequencies, tyre pressure sensor send the radiofrequency signal of a certain frequency in default frequency to TPMS receivers by predetermined period, when
When TPMS receivers judge that current frequency reception signal has interference signal, TPMS receivers actively send frequency handover order extremely
Tyre pressure sensor, tyre pressure sensor switch to other frequencies and send radiofrequency signal, and TPMS receivers switch to and tyre pressure sensor
Identical frequency receives radiofrequency signal.
Further improve, during frequency handover in the following ways (switching is using frequency search or frequency modulation)：
Frequency maximum with currently used frequency interval frequency range in default multiple frequencies is switched to, if the frequency after switching is also
Then continue to switch frequency in the presence of interference, switch to frequency maximum with current frequency interval frequency range in remaining multiple frequencies, until
TPMS receivers judge that current frequency reception signal state no interference signal then stops frequency handover.
Further improve, TPMS receivers have MCU, RF reception chip and LF communication device, and tyre pressure sensor has
LF communication device.
Further improve, tyre pressure sensor and TPMS receivers have Bluetooth communication device.
The present invention provides a kind of communication means of TPMS systems：
The TPMS systems transmitting terminal is sent the radio frequency output signal of at least two frequencies by predetermined period, if the TPMS
When system receiving terminal judges that current frequency reception signal has interference signal, then it is switched to other frequencies and is communicated.
The present invention provides the communication means of another TPMS systems：
The TPMS systems transmitting terminal presets multiple frequencies, and the TPMS systems transmitting terminal sends default frequency by predetermined period
The radiofrequency signal of a certain frequency is to the TPMS system receiving terminals in point, when the TPMS system receiving terminals judge that current frequency connects
When the collection of letters number has interference signal, the TPMS system receiving terminals actively send frequency handover order to the TPMS systems and launched
End, the TPMS systems transmitting terminal switch to other frequencies and send radiofrequency signal.
Further improve, during frequency handover in the following ways (switching is using frequency search or frequency modulation)：
Frequency maximum with currently used frequency interval frequency range in default multiple frequencies is switched to, if the frequency after switching is also
Then continue to switch frequency in the presence of interference, switch to frequency maximum with current frequency interval frequency range in remaining multiple frequencies, until
The TPMS system receiving terminals judge that current frequency reception signal state no interference signal then stops frequency handover.
Further improve, send frequency handover order using low-frequency wireless signals or Bluetooth signal, low-frequency wireless signals are
Refer to 30 kilo hertzs~300 kilo hertzs of wireless communication signals.
The present invention by frequency conversion and/or frequency modulation technology using in the tpms, do by the signal that can effectively solve in vehicle practical application
Disturb, improve the antijamming capability of TPMS systems, improve TPMS dependable with function.
Brief description of the drawings
The present invention is further detailed explanation with embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of TPMS systems first embodiment of the present invention.
Fig. 2 is the structural representation of TPMS systems second embodiment of the present invention.
Embodiment
TPMS systems provided by the invention, including tyre pressure sensor and TPMS receivers；
Tyre pressure sensor presses the radiofrequency signal of predetermined period at least two frequencies of transmission to TPMS receivers, when TPMS is received
When device judges that current frequency reception signal has interference signal, then other frequency reception signals are switched to.
As shown in figure 1, the TPMS receivers have MCU and RF reception chips.
Another TPMS systems provided by the invention, including tyre pressure sensor and TPMS receivers；Tyre pressure sensor is preset
Multiple frequencies, tyre pressure sensor send the radiofrequency signal of a certain frequency in default frequency to TPMS receivers by predetermined period, when
When TPMS receivers judge that current frequency reception signal has interference signal, TPMS receivers actively send frequency handover order extremely
Tyre pressure sensor, tyre pressure sensor switch to other frequencies and send radiofrequency signal.
During frequency handover in the following ways, switching is using frequency search or frequency modulation；
Frequency maximum with currently used frequency interval frequency range in default multiple frequencies is switched to, if the frequency after switching is also
Then continue to switch frequency in the presence of interference, switch to frequency maximum with current frequency interval frequency range in remaining multiple frequencies, until
TPMS receivers judge that current frequency reception signal state no interference signal then stops frequency handover.
As shown in Fig. 2 the TPMS receivers have MCU, RF reception chip, LF communication device and/or Bluetooth communication dress
Put, tyre pressure sensor has LF communication device and/or Bluetooth communication device (not drawn in figure).
Above two TPMS systems provided by the invention can be combined, there is provided more excellent anti-jamming effectiveness.
Multiple frequencies are preset, the radiofrequency signal of at least two frequencies in the multiple frequency is sent extremely by predetermined period
TPMS receivers, when TPMS receivers judge that current frequency reception signal has interference signal, then it is switched to transmitted frequency
In other frequencies.Handoff procedure can be cut in order or by default frequency handover mode in the multiple frequencies sent
Change or low frequency instruction switching is sent by TPMS receivers.
The present invention provides a kind of communication means of TPMS systems：
The TPMS systems transmitting terminal is sent the radio frequency output signal of at least two frequencies by predetermined period, if the TPMS
When system receiving terminal judges that current frequency reception signal has interference signal, then it is switched to other frequencies and is communicated.
The present invention provides the communication means of another TPMS systems：
The TPMS systems transmitting terminal presets multiple frequencies, and the TPMS systems transmitting terminal sends default frequency by predetermined period
The radiofrequency signal of a certain frequency is to the TPMS system receiving terminals in point, when the TPMS system receiving terminals judge that current frequency connects
When the collection of letters number has interference signal, the TPMS system receiving terminals actively send frequency handover order to the TPMS systems and launched
End, the TPMS systems transmitting terminal switch to other frequencies and send radiofrequency signal.
During frequency handover in the following ways, switching is using frequency search or frequency modulation：
Frequency maximum with currently used frequency interval frequency range in default multiple frequencies is switched to, if the frequency after switching is also
Then continue to switch frequency in the presence of interference, switch to frequency maximum with current frequency interval frequency range in remaining multiple frequencies, until
The TPMS system receiving terminals judge that current frequency reception signal state no interference signal then stops frequency handover.
Frequency handover order is sent using low-frequency wireless signals or Bluetooth signal, low-frequency wireless signals refer to 30 kilo hertzs~
300 kilo hertzs of wireless communication signals.
The present invention is described in detail above by embodiment and embodiment, but these are not composition pair
The limitation of the present invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Enter, these also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of TPMS systems, including tyre pressure sensor and TPMS receivers, it is characterised in that：
Tyre pressure sensor presses the radiofrequency signal of predetermined period at least two frequencies of transmission to TPMS receivers, when TPMS receivers are sentenced
When current frequency reception signal of breaking has interference signal, then other frequency reception signals are switched to.
2. TPMS systems as claimed in claim 1, it is characterised in that：TPMS receivers have MCU and RF reception chips.
3. a kind of TPMS systems, including tyre pressure sensor and TPMS receivers, it is characterised in that：
Tyre pressure sensor presets multiple frequencies, and tyre pressure sensor is sent the radio frequency letter of a certain frequency in default frequency by predetermined period
Number to TPMS receivers, when TPMS receivers judge that current frequency reception signal has interference signal, TPMS receivers are actively
Frequency handover order is sent to tyre pressure sensor, tyre pressure sensor switches to other frequencies and sends radiofrequency signal, TPMS receivers
Switch to and receive radiofrequency signal with tyre pressure sensor identical frequency.
4. TPMS systems as claimed in claim 3, it is characterised in that：
During frequency handover in the following ways：
Frequency maximum with currently used frequency interval frequency range in default multiple frequencies is switched to, if the frequency after switching is also present
Interference then continues to switch frequency, frequency maximum with current frequency interval frequency range in remaining multiple frequencies is switched to, until TPMS
Receiver judges that current frequency reception signal state no interference signal then stops frequency handover.
5. TPMS systems as claimed in claim 3, it is characterised in that：TPMS receivers have MCU, RF reception chip and low frequency
Communicator, tyre pressure sensor have LF communication device.
6. the TPMS systems as described in claim 3 or 5, it is characterised in that：Tyre pressure sensor and TPMS receivers have bluetooth
Communicator.
A kind of 7. communication means of TPMS systems, it is characterised in that：
The TPMS systems transmitting terminal is sent the radio frequency output signal of at least two frequencies by predetermined period, if the TPMS systems
When receiving terminal judges that current frequency reception signal has interference signal, then it is switched to other frequencies and is communicated.
A kind of 8. communication means of TPMS systems, it is characterised in that：
The TPMS systems transmitting terminal presets multiple frequencies, and the TPMS systems transmitting terminal is sent in default frequency by predetermined period
The radiofrequency signal of a certain frequency is to the TPMS system receiving terminals, when the TPMS system receiving terminals judge that current frequency receives letter
When number interference signal be present, the TPMS system receiving terminals actively send frequency handover order to the TPMS systems transmitting terminal,
The TPMS systems transmitting terminal switches to other frequencies and sends radiofrequency signal.
9. TPMS systems as claimed in claim 8, it is characterised in that：
During frequency handover in the following ways：
Frequency maximum with currently used frequency interval frequency range in default multiple frequencies is switched to, if the frequency after switching is also present
Interference then continues to switch frequency, switches to frequency maximum with current frequency interval frequency range in remaining multiple frequencies, until described
TPMS system receiving terminals judge that current frequency reception signal state no interference signal then stops frequency handover.
10. TPMS systems as claimed in claim 7 or 8, it is characterised in that：Sent using low-frequency wireless signals or Bluetooth signal
Frequency handover order, low-frequency wireless signals refer to 30 kilo hertzs~300 kilo hertzs of wireless communication signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764101.XA CN107415604A (en) | 2017-08-30 | 2017-08-30 | TPMS systems and its communication means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764101.XA CN107415604A (en) | 2017-08-30 | 2017-08-30 | TPMS systems and its communication means |
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| CN107415604A true CN107415604A (en) | 2017-12-01 |
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| CN201710764101.XA Pending CN107415604A (en) | 2017-08-30 | 2017-08-30 | TPMS systems and its communication means |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146158A (en) * | 2017-12-25 | 2018-06-12 | 苏州赛源微电子有限公司 | A kind of close-range passive tire pressure monitor system |
| CN110163309A (en) * | 2018-02-12 | 2019-08-23 | 橙的电子股份有限公司 | The Writing device and its application method of more tyre pressure sensors of imprinting and frequency conversion imprinting |
| CN111766085A (en) * | 2020-07-09 | 2020-10-13 | 西安正昌电子股份有限公司 | TPMS automatic matching method based on rotary drum test bed |
| CN114189897A (en) * | 2021-11-12 | 2022-03-15 | 北京天玛智控科技股份有限公司 | Fault detection method and device for wireless sensor system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146158A (en) * | 2017-12-25 | 2018-06-12 | 苏州赛源微电子有限公司 | A kind of close-range passive tire pressure monitor system |
| CN110163309A (en) * | 2018-02-12 | 2019-08-23 | 橙的电子股份有限公司 | The Writing device and its application method of more tyre pressure sensors of imprinting and frequency conversion imprinting |
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| CN111766085A (en) * | 2020-07-09 | 2020-10-13 | 西安正昌电子股份有限公司 | TPMS automatic matching method based on rotary drum test bed |
| CN114189897A (en) * | 2021-11-12 | 2022-03-15 | 北京天玛智控科技股份有限公司 | Fault detection method and device for wireless sensor system |
| CN114189897B (en) * | 2021-11-12 | 2024-03-26 | 北京天玛智控科技股份有限公司 | Fault detection method and device for wireless sensor system |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20171201 |