CN103414458B - General tyre pressure monitoring system sensor active circuit, diagnose and initialization instrument - Google Patents
General tyre pressure monitoring system sensor active circuit, diagnose and initialization instrument Download PDFInfo
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- CN103414458B CN103414458B CN201310337341.3A CN201310337341A CN103414458B CN 103414458 B CN103414458 B CN 103414458B CN 201310337341 A CN201310337341 A CN 201310337341A CN 103414458 B CN103414458 B CN 103414458B
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Abstract
The invention discloses general tyre pressure monitoring system sensor active circuit, diagnostic tool and initialization instrument, this active circuit includes: launching antenna and the LC resonance circuit of resonance capacitances in series composition, the first drive circuit being connected with one end of LC resonance circuit, be connected the second drive circuit with the other end of LC resonance circuit；Resonance regulation unit, for the output voltage by controlling the first drive circuit, controls the output voltage of the second drive circuit, thus regulates the target strength of the activation signal that LC resonance circuit is launched；System CPU, for sending the control signal realizing the target strength that activation signal launched by regulation LC resonance circuit to described resonance regulation unit.After tire pressure monitoring system sensor diagnostic instrument or tire pressure monitoring system initialization instrument arrange this active circuit, it is not required to repeatedly regulate the distance between instrument and tire pressure monitoring system sensor, it is possible to quick and precisely complete to excite.
Description
Technical field
The present invention relates to tire pressure monitoring field, particularly relate to general tyre pressure monitoring system sensor active circuit,
Diagnosis and the instrument of initialization.
Background technology
Tire pressure monitoring system sensor diagnostic instrument and tire pressure monitoring system initialize instrument and in use need
Tire pressure monitoring system sensor to be activated make its launch high-frequency wireless signals (usually 434MHz or
315MHz).The method activating tire pressure monitoring system sensor has multiple, and current most common method is to use
Diagnostic tool or initialization instrument are launched with specific modulation letter at the tire pressure monitoring system sensor proximity that is activated
Breath low-frequency wireless signals (usually 125KHz), tire pressure monitoring system sensor receive this low frequency without
The high-frequency wireless signals with information such as ID, air pressure, temperature is launched after line signal.Tire pressure monitoring system at present
Sensor has several producers and model, the different tire pressure monitoring system sensor amplitude to low frequency activation signal
Require not quite identical.And current tire pressure monitoring system sensor diagnostic instrument or tire pressure monitoring system are initial
Chemical industry tool does not designs for different manufacturers and model tire pressure monitoring system sensor emission different amplitude low frequency activation
The function of signal, automobile maintains or keeps in repair when, needs different according to different Truck type choice
The instrument of tire pressure monitoring system sensor activation.
Summary of the invention
The present invention provides to exempt and repeatedly regulates the distance between instrument and tire pressure monitoring system sensor, quick and precisely
Complete circuit, diagnostic tool and the initialization instrument excited.
For realizing foregoing circuit, diagnostic tool and initialization instrument, the present invention by the following technical solutions:
On the one hand, use general tyre pressure monitoring system sensor active circuit, including:
Launch antenna and the LC resonance circuit of resonance capacitances in series composition, be connected with one end of LC resonance circuit
The first drive circuit, be connected the second drive circuit with the other end of LC resonance circuit；
Resonance regulation unit, for the output voltage by controlling the first drive circuit, controls the second driving electricity
The output voltage on road, thus regulate the target strength of the activation signal that LC resonance circuit is launched；
System CPU, activates for launching to described resonance regulation unit transmission realization regulation LC resonance circuit
The control signal of the target strength of signal.
Wherein, described resonance regulation unit includes electrically connecting with the first drive circuit and the second drive circuit respectively
The half-bridge connect/full-bridge control circuit, the input of half-bridge/full-bridge control circuit is electrically connected with gate circuit, described
System CPU is by controlling the enable of gate circuit or the selection of closed mode, to control described half-bridge or full-bridge
The selection of drive pattern；During half-bridge driven, control LC resonance by the first drive circuit and the second drive circuit
The two ends of circuit are in the one in four kinds of connection status, and described four kinds of connection status are the one of LC resonance circuit
Hold ground connection or connect power supply, other end input voltage waveform；Or one end input voltage waveform of LC resonance circuit,
Other end ground connection or connect power supply；When full-bridge drives, the second drive circuit output and phase place of the first drive circuit
Contrary voltage, changes, by the drive pattern of half-bridge with full-bridge, the activation signal that regulation LC resonance circuit is launched
Intensity.
Wherein, described resonance regulation unit includes electrically connecting with the first drive circuit, the second drive circuit respectively
The voltage commutation circuit connect, described voltage commutation circuit, for controlling to the first drive circuit and the second driving
The intensity of the activation signal that the size adjustment LC resonance circuit of the voltage of circuit conveying is launched, described system CPU
Control the size of the voltage that described voltage commutation circuit carries to the first drive circuit and the second drive circuit.
Wherein, also include selecting switch and by selecting the electric capacity for regulating LC resonance circuit of on-off control
Multiple regulation electric capacity, by selecting switch to adjust in parallel with the resonant capacitance number regulating electric capacity, with right
In LC resonance circuit, the size of electric capacity is finely adjusted.
Wherein, described selection switchs as toggle switch, rotary disk shutter or electrical switch.
Wherein, described first driving and the second drive circuit are made up of metal-oxide-semiconductor or audion.
Wherein, described first drive circuit includes p-type metal-oxide-semiconductor M1 and N-type metal-oxide-semiconductor M2, described P
The drain electrode of type metal-oxide-semiconductor M1 is connected with one end of LC resonance circuit, and source electrode is connected with power supply, and grid connects control
Signal processed；The source ground of N-type metal-oxide-semiconductor M2, drain electrode is connected with one end of LC resonance circuit, grid
Connect control signal；Second drive circuit includes p-type metal-oxide-semiconductor M3 and N-type metal-oxide-semiconductor M4, described P
The drain electrode of type metal-oxide-semiconductor M3 is connected with the other end of LC resonance circuit, and source electrode is connected with power supply, and grid connects
Control signal；The source ground of described N-type metal-oxide-semiconductor M4, drain electrode and the other end phase of LC resonance circuit
Even, grid connects control signal.
Wherein, described first drive circuit and the second drive circuit are IRF9952 type integrated circuit.
On the other hand, use general tyre pressure monitoring system sensor diagnostic tool, be provided with above-mentioned general tyre pressure
Monitoring system sensor active circuit.
On the other hand, it is provided with above-mentioned general tyre pressure monitoring system sensor active circuit.
The beneficial effects of the present invention is: tire pressure monitoring system sensor is by LC resonance electricity in active circuit
Road send low frequency activation signal activate, the present invention is arranged in active circuit resonance regulation unit come right
The amplitude of low frequency activation signal is adjusted, tire pressure monitoring system sensor diagnostic instrument or tire pressure monitoring system
After initialization instrument arranges this active circuit, be not required to repeatedly to regulate instrument and tire pressure monitoring system sensor it
Between distance, it is possible to quick and precisely complete to excite.
Accompanying drawing explanation
Fig. 1 is the first embodiment structure square frame of general tyre pressure monitoring system sensor active circuit of the present invention
Figure；
Fig. 2 a is the second example structure square frame of general tyre pressure monitoring system sensor active circuit of the present invention
Figure；
Fig. 2 b is a kind of tool of two drive circuits of general tyre pressure monitoring system sensor active circuit of the present invention
The circuit diagram of body.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Fig. 1 is the first embodiment block diagram of general tyre pressure monitoring system sensor active circuit of the present invention,
As it can be seen, this circuit includes: the LC resonance circuit that transmitting antenna 110 and resonant capacitance 120 are composed in series,
The first drive circuit 130 being connected with one end of LC resonance circuit, the other end with LC resonance circuit are connected
Second drive circuit 140；
Resonance regulation unit 150, for the output voltage by controlling the first drive circuit 130, controls second
The output voltage of drive circuit 140, thus regulate the target strength of the activation signal that LC resonance circuit is launched；
System CPU 160, sends out for sending realization regulation LC resonance circuit to described resonance regulation unit 150
Penetrate the control signal of the target strength of activation signal.
Tire pressure monitoring system sensor sends low frequency activation signal by LC resonance circuit in active circuit to be carried out
Activating, the variable amplitude of existing active circuit medium and low frequency activation signal is the least, in the present invention in active circuit
Arranging resonance regulation unit 150 to be adjusted the amplitude of low frequency activation signal, tire pressure monitoring system senses
After device diagnostic tool or tire pressure monitoring system initialization instrument arrange this active circuit, it is not required to repeatedly regulate work
Distance between tool and tire pressure monitoring system sensor, it is possible to quick and precisely complete to excite.
Fig. 2 a is the second example structure signal of general tyre pressure monitoring system sensor active circuit of the present invention
Figure, as it can be seen, described resonance regulation unit 150 includes driving with the first drive circuit 130 and second respectively
Half-bridge/full-bridge control circuit 151 that galvanic electricity road 140 is electrically connected with, the input of half-bridge/full-bridge control circuit 151
End is electrically connected with gate circuit 153, and described system CPU 160 is by controlling enable or the closedown of gate circuit 153
The selection of state, to control the selection of the drive pattern of described half-bridge/full-bridge control circuit 151；Half-bridge driven
Time, the two ends being controlled LC resonance circuit by the first drive circuit 130 and the second drive circuit 140 are in four
Planting the one in connection status, described four kinds of connection status are one end ground connection of LC resonance circuit or connect power supply,
Other end input voltage waveform；Or one end input voltage waveform of LC resonance circuit, other end ground connection or connect
Power supply；When full-bridge drives, the second drive circuit 140 output and the first opposite in phase driving electric 130 tunnels
Voltage, changes the strong of activation signal that regulation LC resonance circuit launches by half-bridge and the drive pattern of full-bridge
Degree.Described resonance regulation unit 150 includes electric with first drive circuit the 130, second drive circuit 140 respectively
Property connect voltage commutation circuit 152, described voltage commutation circuit 152, for control to the first drive circuit
130 and second activation signal launched of the size adjustment LC resonance circuit of voltage of drive circuit 140 conveying
Intensity, described system CPU 160 controls described voltage commutation circuit 152 to the first drive circuit 140 and
The size of the voltage of two drive circuit 140 conveyings.Also include selecting switch 122 and by selecting switch 122
Multiple regulation electric capacity 121 of the electric capacity for regulating LC resonance circuit controlled, by selecting switch 122 tune
The number of the whole regulation electric capacity 121 in parallel with resonant capacitance 120, with to the size of electric capacity in LC resonance circuit
It is finely adjusted.Described selection switch 121 is toggle switch, rotary disk shutter or electrical switch.Described first drives
Dynamic and the second drive circuit is made up of metal-oxide-semiconductor or audion.
The transmitting antenna 110 of low frequency activation signal, usually uses bar magnet, is equivalent to inductance on circuit, sends out
Penetrate after antenna 110 connects with electric capacity 120, constitute LC resonance circuit, make the alternating voltage of bar magnet two sections reach
300V～800V, launches low frequency activation signal, and tire pressure monitoring system sensor is by low frequency activation signal
After activation, start working.Two drive circuits in this programme, are all by metal-oxide-semiconductor or crystal triode group
Become, the energy of power supply 170 is fed on LC resonance circuit, the present embodiment is controlled by half-bridge/full-bridge
The type of drive of the first drive circuit and the second drive circuit is controlled by circuit.When using half-bridge driven side
During formula, having four kinds of connection status and can select switching, the first state is that LC resonance circuit and second drives
One end dead earth that circuit connects, the first drive circuit is to other end output voltage waveforms, the second state
One end of connecting for LC resonance circuit and the second drive circuit is fixing connects power supply, and the first drive circuit is to the other end
Output voltage waveforms, the third state is that one end that LC resonance circuit and the first drive circuit connect is fixing to be connect
Ground, the second drive circuit is to other end output voltage waveforms, and the 4th kind of state is that LC resonance circuit and first drives
One end that galvanic electricity road connects is fixing connects power supply, and the second drive circuit, to other end output voltage waveforms, works as employing
During 125K hertz low frequency activation signal, second drive circuit 140 switching frequency between power supply 170 and ground
Also it is 125K hertz；Under half-bridge driven mode, the resonance potential ratio at bar magnet two ends is relatively low, and radiate is low
Frequently activation signal amplitude the most just ratio is relatively low.When using full-bridge type of drive, the second drive circuit 140 and the
The switching frequency of one drive circuit 130 is identical, switches between power supply 170 and ground, but second drives electricity
The driving phase place on road 140 and the driving opposite in phase of the first drive circuit 130, the i.e. first drive circuit 130
During ground connection, the second drive circuit 140 connects power supply 170, and when the first drive circuit 130 connects power supply 170, second drives
Circuit 140 ground connection, when using the low frequency activation signal of 125K hertz, the first drive circuit 130 and second
The drive circuit 140 switching frequency between power supply 170 and ground is 125K hertz but opposite in phase.Full-bridge
The higher resonance potential than under half-bridge driven pattern can be obtained under type of drive at bar magnet two ends, radiate
Low frequency activation signal is also the most higher, and concrete half-bridge and the switching of full-bridge are controlled by system CPU 160.Half-bridge
With full-bridge switching mode so that the excursion of resonance potential adds one times.LC resonance circuit is by power supply
170 pass through two drive circuitry, and after adding voltage switching module, system CPU 160 is according to reality
Border needs to control power supply 170 by voltage switching module and exports two voltages driving module, thus changes
The voltage at bar magnet two ends in LC resonance circuit, and then change the amplitude of low frequency activation signal, by arranging voltage
Handover module, further increases resonance potential fine steps scope and precision.Wherein regulate electric capacity 121
It is disposed to reduce foozle.The bar magnet launching antenna 110 the most all can with electric capacity 120
Some foozle, so different tire pressure monitoring system sensor diagnostic instruments or tire pressure monitoring system are initial
Chemical industry tool low frequency signal launch amplitude all can some difference, so the present invention adds selection switch 122
With multiple regulation electric capacity 121 for fine-tuned emission intensity.Each regulation electric capacity 121 is respectively by selecting the beginning
The terminal selecting end 122 connect with selecting switch, by selecting the adjustment of switch 122 to change and electric
Hold the quantity of the regulation electric capacity 121 of 120 parallel connections, thus change the value of C in LC resonance circuit, bar magnet two
The voltage of end can change along with the change of the value of C.In inside plants by particular step and method regulation choosing
Selecting the position of switch 122, the voltage of the LC resonance circuit being is expected value, thus between abatement apparatus individuality
Difference.When selecting switch 122 and regulation electric capacity 212 to produce the most in the factory, regulation can be used, and dispatches from the factory it
The most typically will not change it again.Can certainly select directly to replace electric capacity 120 and reach to change the mesh of capacitance
's.
Further, as shown in Figure 2 b, described first drive circuit includes p-type metal-oxide-semiconductor M1 and N-type
The drain electrode of metal-oxide-semiconductor M2, described p-type metal-oxide-semiconductor M1 is connected with one end of LC resonance circuit, source electrode and
Power supply is connected, and grid connects control signal；The source ground of N-type metal-oxide-semiconductor M2, drain electrode and LC resonance electricity
The one end on road is connected, and grid connects control signal；Second drive circuit includes p-type metal-oxide-semiconductor M3 and N-type
The drain electrode of metal-oxide-semiconductor M4, described p-type metal-oxide-semiconductor M3 is connected with the other end of LC resonance circuit, source electrode
Being connected with power supply, grid connects control signal；The source ground of described N-type metal-oxide-semiconductor M4, drain electrode and LC
The other end of resonance circuit is connected, and grid connects control signal.
By controlling the control signal that receives of grid of four metal-oxide-semiconductors, it is achieved control two drive circuits to
Voltage that the two ends of LC resonance circuit apply thus the amplitude to low frequency signal that realizes control.
Preferably, to be IRF9952 type integrated for described first drive circuit 130 and the second drive circuit 140
Circuit.
Further, above-mentioned general tyre pressure monitoring system sensor active circuit is arranged at tire pressure monitoring system
Sensor diagnostic instrument, newly obtained a kind of general tyre pressure monitoring system sensor diagnostic tool.
Further, above-mentioned general tyre pressure monitoring system sensor active circuit is arranged at tire pressure monitoring system
Sensor initializing instrument, newly obtained a kind of general tyre pressure monitoring system sensor initializes instrument.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
It is limited to this, any is familiar with the people of this technology in the technical scope that disclosed herein, the change that can readily occur in
Change or replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with scope of the claims.
Claims (8)
1. general tyre pressure monitoring system sensor active circuit, it is characterised in that including:
Launch antenna and the LC resonance circuit of resonance capacitances in series composition, be connected with one end of LC resonance circuit
The first drive circuit, be connected the second drive circuit with the other end of LC resonance circuit；
Resonance regulation unit, for the output voltage by controlling the first drive circuit, controls the second driving electricity
The output voltage on road, thus regulate the target strength of the activation signal that LC resonance circuit is launched；
System CPU, activates for launching to described resonance regulation unit transmission realization regulation LC resonance circuit
The control signal of the target strength of signal；
Described resonance regulation unit includes half be electrically connected with respectively with the first drive circuit and the second drive circuit
Bridge/full-bridge control circuit, the input of half-bridge/full-bridge control circuit is electrically connected with gate circuit, described system
CPU is by controlling enable or the selection of closed mode of gate circuit, to control the driving of described half-bridge or full-bridge
The selection of pattern；During half-bridge driven, control LC resonance electricity by the first drive circuit and the second drive circuit
The two ends on road are in the one in four kinds of connection status, and described four kinds of connection status are the one of LC resonance circuit
Hold ground connection or connect power supply, other end input voltage waveform；Or one end input voltage ripple of LC resonance circuit
Shape, other end ground connection or connect power supply；When full-bridge drives, the second drive circuit output and the first drive circuit
The voltage of opposite in phase, changes swashing of regulation LC resonance circuit transmitting by the drive pattern of half-bridge with full-bridge
The intensity of signal alive；
Described resonance regulation unit includes the electricity being electrically connected with respectively with the first drive circuit, the second drive circuit
Pressure switching circuit, described voltage commutation circuit, defeated to the first drive circuit and the second drive circuit for controlling
The intensity of the activation signal that the size adjustment LC resonance circuit of the voltage sent is launched, described system CPU controls
The size of the voltage that described voltage commutation circuit carries to the first drive circuit and the second drive circuit.
General tyre pressure monitoring system sensor active circuit the most according to claim 1, it is characterised in that
Also include selecting switch and by selecting multiple tune of the electric capacity for regulating LC resonance circuit of on-off control
Economize on electricity is held, by selecting switch to adjust the number of the regulation electric capacity in parallel with resonant capacitance, with to LC resonance
In circuit, the size of electric capacity is finely adjusted.
General tyre pressure monitoring system sensor active circuit the most according to claim 2, it is characterised in that
Described selection switchs as toggle switch, rotary disk shutter or electrical switch.
General tyre pressure monitoring system sensor active circuit the most according to claim 1, it is characterised in that
Described first driving and the second drive circuit are made up of metal-oxide-semiconductor or audion.
General tyre pressure monitoring system sensor active circuit the most according to claim 4, it is characterised in that
Described first drive circuit includes p-type metal-oxide-semiconductor M1 and N-type metal-oxide-semiconductor M2, described p-type MOS
The drain electrode of pipe M1 is connected with one end of LC resonance circuit, and source electrode is connected with power supply, and grid connects control signal；
The source ground of N-type metal-oxide-semiconductor M2, drain electrode is connected with one end of LC resonance circuit, and grid connects control letter
Number；Second drive circuit includes p-type metal-oxide-semiconductor M3 and N-type metal-oxide-semiconductor M4, described p-type MOS
The drain electrode of pipe M3 is connected with the other end of LC resonance circuit, and source electrode is connected with power supply, and grid connects control signal；
The source ground of described N-type metal-oxide-semiconductor M4, drain electrode is connected with the other end of LC resonance circuit, and grid connects
Control signal.
General tyre pressure monitoring system sensor active circuit the most according to claim 1, it is characterised in that
Described first drive circuit and the second drive circuit are IRF9952 type integrated circuit.
7. general tyre pressure monitoring system sensor diagnostic tool, it is characterised in that be provided with claim 1-6 and appoint
Anticipate a described general tyre pressure monitoring system sensor active circuit.
8. general tyre pressure monitoring system sensor initializes instrument, it is characterised in that be provided with claim 1-6
General tyre pressure monitoring system sensor active circuit described in any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310337341.3A CN103414458B (en) | 2013-08-05 | 2013-08-05 | General tyre pressure monitoring system sensor active circuit, diagnose and initialization instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310337341.3A CN103414458B (en) | 2013-08-05 | 2013-08-05 | General tyre pressure monitoring system sensor active circuit, diagnose and initialization instrument |
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| CN103414458A CN103414458A (en) | 2013-11-27 |
| CN103414458B true CN103414458B (en) | 2016-08-17 |
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| CN109795269B (en) * | 2019-03-13 | 2021-04-06 | 深圳市元征科技股份有限公司 | Low-frequency signal adjusting method and device |
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| CN2097499U (en) * | 1991-02-04 | 1992-02-26 | 李立人 | Low-voltage starting light-regulating device for fluorescent lamp |
| CN101343962A (en) * | 2007-07-12 | 2009-01-14 | 欧姆龙株式会社 | Transmitting apparatus and method |
| CN201510739U (en) * | 2009-07-16 | 2010-06-23 | 深圳市三子科技有限公司 | Gaming device combination capable of being wirelessly charged |
| CN102263441A (en) * | 2010-05-27 | 2011-11-30 | 富达通科技股份有限公司 | Data transmission method for inductive power supply |
| CN102963219A (en) * | 2012-10-19 | 2013-03-13 | 深圳市元征科技股份有限公司 | TPMS apparatus with diagnosis and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4824651B2 (en) * | 2007-08-28 | 2011-11-30 | ルネサスエレクトロニクス株式会社 | Data communication system and receiving circuit offset adjustment method |
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2013
- 2013-08-05 CN CN201310337341.3A patent/CN103414458B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097499U (en) * | 1991-02-04 | 1992-02-26 | 李立人 | Low-voltage starting light-regulating device for fluorescent lamp |
| CN101343962A (en) * | 2007-07-12 | 2009-01-14 | 欧姆龙株式会社 | Transmitting apparatus and method |
| CN201510739U (en) * | 2009-07-16 | 2010-06-23 | 深圳市三子科技有限公司 | Gaming device combination capable of being wirelessly charged |
| CN102263441A (en) * | 2010-05-27 | 2011-11-30 | 富达通科技股份有限公司 | Data transmission method for inductive power supply |
| CN102963219A (en) * | 2012-10-19 | 2013-03-13 | 深圳市元征科技股份有限公司 | TPMS apparatus with diagnosis and control method |
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Address after: 518000 Guangdong city of Shenzhen province Nanshan District Xili Street Xueyuan Road No. 1001 Chi Park B1 building 7 layer, 8 layer, 10 layer Applicant after: SHENZHEN AUTEL TECHNOLOGY CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Xili town tea light road on the south side of Shenzhen integrated circuit design and application of Industrial Park 106, 107, 109, 114 Applicant before: Shenzhen Autel Technology Co., Ltd. |
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Effective date of registration: 20171227 Address after: 410000 Hunan province Changsha City Lugu high tech Development Zone, Road No. 662 Building No. 558 Software Center Patentee after: Hunan Provincial Highway Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Xili Street Xueyuan Road No. 1001 Chi Park B1 building 7 layer, 8 layer, 10 layer Patentee before: SHENZHEN AUTEL TECHNOLOGY CO., LTD. |