CN109795269A - A kind of low frequency signal adjusting method and device - Google Patents
A kind of low frequency signal adjusting method and device Download PDFInfo
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- CN109795269A CN109795269A CN201910190495.1A CN201910190495A CN109795269A CN 109795269 A CN109795269 A CN 109795269A CN 201910190495 A CN201910190495 A CN 201910190495A CN 109795269 A CN109795269 A CN 109795269A
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Abstract
This application discloses a kind of low frequency signal adjusting method and devices.This method comprises: receiving modulated signal after detecting that low frequency signal generator generates low frequency signal；Judge whether the modulated signal meets adjusting condition；When meeting the adjusting condition, the modulated signal is adjusted, generates the modulated signal after adjusting；Modulated signal after exporting the adjusting.In addition, also disclosing device corresponding with this method.Implement the scheme of the application, the activation requirement of the tyre pressure sensor in various situations can be suitable for, for adjusting the size of activation signal, to improve activation efficiency.
Description
Technical field
This application involves internet of things field, and in particular to a kind of low frequency signal adjusting method and device.
Background technique
System for monitoring pressure in tyre (Tire Pressure Monitoring System, TPMS), by using wirelessly penetrating
The tire pressure sensing unit and tire pressure monitoring unit of frequency communication, realize to the real time monitoring of tire pressure, in real time tire pressure occur
(high pressure, low pressure, pressure are reduced rapidly) issues corresponding warning when abnormal.So that it is guaranteed that the pressure and temperature of tire maintains standard
In range, the probability for reducing tire of blowing out, ruin is played, the damage of vehicle part is reduced.
Usually after eliminating system for monitoring pressure in tyre failure, need carrying out tire pressure matching or tire pressure reset
When, reactivate tyre pressure sensor.After market needs to trigger tool using tyre pressure sensor to send low frequency signal at present
Mode activates tyre pressure sensor, but due to the power limited of tyre pressure sensor triggering tool, causes activation signal intensity weaker, tire
Pressure sensor activation efficiency is lower, or even the case where can not activating tyre pressure sensor occurs.Based on the above issues, the application is implemented
Example provides a kind of low frequency signal adjusting method and device, suitable for the activation requirement of the tyre pressure sensor in various situations, uses
In the size for adjusting activation signal, to improve activation efficiency.
Summary of the invention
The embodiment of the present application provides a kind of low frequency signal adjusting method and device, passes suitable for the tire pressure in various situations
The activation requirement of sensor, for adjusting the size of activation signal, to improve activation efficiency.
In a first aspect, the embodiment of the present application provides a kind of low frequency signal adjusting method, it is applied to low frequency signal and adjusts dress
It sets, the low frequency signal regulating device includes signal receiving module, signal-adjusting module and signal control module；The low frequency letter
Number regulating device is connect with low frequency signal generator；The signal control module includes bidirectional thyristor, triode, the first electricity
Source, the end OC and one or more resistance；The signal-adjusting module includes mosfet driver and LC oscillating circuit；It include: to work as
After detecting that low frequency signal generator generates low frequency signal, modulated signal is received；Judge whether the modulated signal meets adjusting
Condition；When meeting the adjusting condition, the modulated signal is adjusted, generates the modulated signal after adjusting；Export the adjusting
Modulated signal afterwards.
In one possible implementation, described after detecting that low frequency signal generator generates low frequency signal, it receives
Modulated signal, comprising: controlling the end OC is high level, forbids the bidirectional thyristor.
It is described to judge whether the modulated signal meets adjusting condition, comprising: to sentence in alternatively possible implementation
Whether the modulated signal of breaking carries the low frequency signal；If the modulated signal carries the low frequency signal, described in judgement
Modulated signal meets the adjusting condition；Otherwise, detect whether the low frequency signal generator stops generating the low frequency signal.
It is described when meeting the adjusting condition in another possible implementation, the modulated signal is adjusted, and
Generate the modulated signal after adjusting, comprising: obtain the frequency of the low frequency signal；According to the frequency of the low frequency signal, adjust
The modulated signal, and generate the modulated signal after adjusting.
In another possible implementation, the method also includes: when detecting that the low frequency signal generator stops
When only generating the low frequency signal, stop receiving the modulated signal.
Modulated signal in another possible implementation, after the output adjusting, comprising: controlling the end OC is
The bidirectional thyristor is connected in low level；It is generated using the LC oscillating circuit and exports the modulated signal after the adjusting.
In another possible implementation, before the reception modulated signal, the method also includes: with default
Time interval is whether low frequency signal generator described in cycle detection generates low frequency signal.
Second aspect, the embodiment of the present application provide a kind of low frequency signal regulating device, the low frequency signal regulating device
Including signal receiving module, signal-adjusting module and signal control module；The low frequency signal regulating device and low frequency signal produce
Raw device connection；The signal-adjusting module includes mosfet driver and LC oscillating circuit；The signal control module includes double
To thyristor, triode, the first power supply, the end OC and one or more resistance；It include: the signal receiving module, for when inspection
After measuring low frequency signal generator generation low frequency signal, modulated signal is received；The signal control module, for judging the tune
Whether signal processed meets adjusting condition；The signal-adjusting module, for when meeting the adjusting condition, adjusting the modulation
Signal generates the modulated signal after adjusting；The signal-adjusting module, for exporting the modulated signal after the adjusting.
In one possible implementation, the signal control module is also used to, and controlling the end OC is high level, is prohibited
The only bidirectional thyristor.
In alternatively possible implementation, the signal control module is specifically used for, and judges that the modulated signal is
It is no to carry the low frequency signal；If the modulated signal carries the low frequency signal, judge described in the modulated signal satisfaction
Adjusting condition；Otherwise, detect whether the low frequency signal generator stops generating the low frequency signal.
In another possible implementation, the signal-adjusting module is specifically used for, and obtains the low frequency signal
Frequency；According to the frequency of the low frequency signal, the modulated signal is adjusted, and generates the modulated signal after adjusting.
In another possible implementation, the signal control module is also used to, when detecting the low frequency signal
When generator stops generating the low frequency signal, stop receiving the modulated signal.
In another possible implementation, the signal control module is specifically used for, and controlling the end OC is low electricity
It is flat, the bidirectional thyristor is connected；The signal-adjusting module is specifically used for, and is generated using the LC oscillating circuit and exports institute
State the modulated signal after adjusting.
In another possible implementation, the signal control module is also used to, using prefixed time interval as the period
Detect whether the low frequency signal generator generates low frequency signal.
The third aspect, the embodiment of the present application provide a kind of computer readable storage medium, the computer-readable storage
Instruction is stored in medium, when run on a computer, so that computer executes method described in above-mentioned various aspects.
Fourth aspect, the embodiment of the present application provide a kind of computer program product comprising instruction, when it is in computer
When upper operation, so that computer executes method described in above-mentioned various aspects.The embodiment of the present application has the advantages that
It is required according to the specific activation of tyre pressure sensor, the intensity of modulated signal is adjusted, corresponding adjusting is generated
Modulated signal afterwards.Implement the scheme of the application, the activation requirement of the tyre pressure sensor in various situations can be suitable for, be used for
The size for adjusting activation signal, to improve activation efficiency.
Detailed description of the invention
Fig. 1 is a kind of architecture diagram of low frequency signal regulating system provided by the embodiments of the present application；
Fig. 2 is a kind of flow diagram of low frequency signal adjusting method provided by the embodiments of the present application；
Fig. 3-a is a kind of structural schematic diagram of low frequency signal regulating device provided by the embodiments of the present application；
Fig. 3-b is a kind of circuit diagram of exemplary low frequency signal regulating device provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application is described.
It should be appreciated that for illustration and not for limitation, proposing such as particular system structure, skill in being described below
The detail of art etc, so as to provide a thorough understanding of the present application embodiment.However, it will be clear to one skilled in the art that not having
Have and the application also may be implemented in the other embodiments of these details.In other situations, it omits to well-known system
The detailed description of system, apparatus, circuit and method, so as not to obscure the description of the present application with unnecessary details.
After market needs to trigger tool using tyre pressure sensor at present activates tire pressure to pass in a manner of sending low frequency signal
Sensor, but due to the power limited of tyre pressure sensor triggering tool, cause activation signal intensity weaker, tyre pressure sensor activation effect
Rate is lower, or even the case where can not activating tyre pressure sensor occurs.Based on the above issues, the embodiment of the present application provides a kind of low
Frequency Signal Regulation method and device, suitable for the activation requirement of the tyre pressure sensor in various situations, for adjusting activation signal
Size, to improve activation efficiency.
Referring to Fig. 1, Fig. 1 is a kind of architecture diagram of low frequency signal regulating system provided by the embodiments of the present application.Such as Fig. 1 institute
Show, includes low frequency signal regulating device 10 and tyre pressure sensor 20 in the low frequency signal regulating system；Wherein, low frequency signal is adjusted
It is communicated between device 10 and tyre pressure sensor 20 by wireless or wired mode.Low frequency signal regulating device 10 will be adjusted
The low frequency signal saved is sent to tyre pressure sensor 20, after low frequency signal after tyre pressure sensor 20, which receives, to be adjusted, activation
Success.Above-mentioned tyre pressure sensor 20 is located inside tires, and when the corresponding tyre pressure sensor 20 of tire activates successfully, above-mentioned tire pressure is passed
Sensor 20 can acquire the information such as wheel tyre pressure, temperature, and data are wirelessly transmitted to ECU controller, so that ECU controller is in tire
Corresponding warning is issued when extruding existing abnormal.
Referring to Fig. 2, Fig. 2 is a kind of flow diagram of low frequency signal adjusting method provided by the embodiments of the present application, it should
Low frequency signal adjusting method can be applied to the low frequency signal regulating device in system framework shown in FIG. 1.Wherein:
Whether S101, detection low frequency signal generator generate low frequency signal.
When detecting that low frequency signal generator generates low frequency signal, low frequency signal regulating device is started to work.
Specifically, when detecting that low frequency signal generator generates low frequency signal, start above-mentioned low frequency signal regulating device,
The end OC for making above-mentioned signal control module by the enabled input terminal of above-mentioned signal-adjusting module is high level.
Further, if low frequency signal generator does not generate low frequency signal, continue to examine by the period of prefixed time interval
Survey whether low frequency signal generator generates low frequency signal.
S102, when detect low frequency signal generator generate low frequency signal after, receive modulated signal.
When detecting above-mentioned low frequency signal generator generation low frequency signal, need to swash external tyre pressure sensor
Living, above-mentioned low frequency signal regulating device receives above-mentioned modulated signal.
In an optional implementation manner, above-mentioned modulated signal be include modulation that frequency is 125kHZ carrier signal letter
Number.
In another optional implementation, above-mentioned modulated signal be include carrier signal and frequency that frequency is 125kHZ
Rate is the modulated signal of the low frequency signal of 125kHZ.
S103, judge whether modulated signal meets adjusting condition.
Specifically, above-mentioned low frequency signal regulating device judges whether the modulated signal carries the low frequency signal；If institute
When stating the modulated signal carrying low frequency signal, judge that the modulated signal meets the adjusting condition；Otherwise, it detects described low
Whether frequency signal generator stops generating the low frequency signal.
In an optional implementation manner, it includes frequency that above-mentioned low frequency signal regulating device, which judges that above-mentioned modulated signal is,
For the modulated signal of 125kHZ carrier signal, i.e., above-mentioned modulated signal contains only carrier signal, does not carry low frequency signal.Determine
Above-mentioned modulated signal is unsatisfactory for above-mentioned adjusting condition, and whether above-mentioned low frequency signal regulating device detects above-mentioned low frequency signal generator
Stop generating above-mentioned low frequency signal.
For example, above-mentioned low frequency signal regulating device detects that low frequency signal generator has stopped generating above-mentioned low frequency letter
Number, i.e., no longer needing the device to send includes the modulated signal of low frequency signal, in above-mentioned low frequency signal regulating device control device
The timely failure of oscillation of LC oscillating circuit, stop outward output adjust after modulated signal.
In another example above-mentioned low frequency signal regulating device detects that low frequency signal generator is still generating above-mentioned low frequency signal,
Under the premise of adjusting modulated signal there is still a need for low frequency signal regulating device i.e. in currently used scene, above-mentioned low frequency signal is adjusted
Device persistently in the modulated signal received whether include low frequency signal judge.It is adjusted when judging that modulated signal meets
Condition, or when detecting that above-mentioned low frequency signal generator stops generating low frequency signal, no longer in modulated signal whether include
Low frequency signal is judged.
S104, when the adjusting condition meets, adjust the modulated signal, generate the modulated signal after adjusting.
Specifically, obtaining the frequency of above-mentioned low frequency signal；According to the frequency of above-mentioned low frequency signal, above-mentioned modulation letter is adjusted
Number, and generate the modulated signal after adjusting.
In an optional implementation manner, different when activating the tyre pressure sensor in the tire for installing different wheel hubs
The wheel hub of type is different the strength of modulating signal after the adjusting needed when tyre pressure sensor activates, is adjusted by control
The number of signal processed and the multiplying power of amplification can obtain activation efficiency of different wheel hubs under the conditions of different adjustment.Further,
It can determine best activation efficiency and corresponding regulating command of the tyre pressure sensor in the tire of different wheel hubs.
For example, receiving modulated signal all the way when activation is mounted on the tyre pressure sensor in the tire of 15 cun of wheel hubs and putting
Under twice adjusting condition, the activation efficiency of the tyre pressure sensor is 85%；It is twice receiving two-way modulated signal and putting
Adjusting condition under, the activation efficiency of the tyre pressure sensor is 92%；In the adjusting for receiving two-way modulated signal and twice of amplification
Under instruction, the activation efficiency of the tyre pressure sensor is 95%；In the case where receiving two-way modulated signal and amplifying the adjusting condition of three times,
The activation efficiency of the tyre pressure sensor is 95%.For the tyre pressure sensor in the tire that activation is mounted on 15 cun of wheel hubs,
Optimal activation efficiency is 95%, and corresponding regulating command is to receive two-way modulated signal and twice of amplification.
In another optional implementation, according to the frequency of the low frequency signal of acquisition, pass through pre-set grade
With the corresponding relationship of the frequency of low frequency signal, the regulating command of above-mentioned low frequency signal is determined.
For example, low frequency signal generator issues corresponding low frequency signal for beautiful 308 vehicle, low frequency regulating device according to
The frequency of the low frequency signal of acquisition judges that the frequency of the low frequency signal belongs to car grade, the vehicle hub of the grade compared with
It is small, it is easier to activate.So corresponding regulating command is to put low frequency signal to be twice.
In another example low frequency signal generator issues corresponding low frequency signal, signal control module for Land Rover visiting scienc spot vehicle
According to the frequency of the low frequency signal got, judge that the frequency of the low frequency signal belongs to offroad vehicle grade, the vehicle of the grade
Wheel hub is larger, tire is thicker, and activation difficulty is larger.So corresponding regulating command is three times of amplification, and adjust LC oscillating circuit
Frequency of oscillation.
Modulated signal after S105, the output adjusting.
Specifically, after modulated signal is adjusted according to regulating command for above-mentioned low frequency signal regulating device, by counter
Value plus 1；When above-mentioned Counter Value reaches threshold value, above-mentioned low frequency signal regulating device exports alerting signal.Above-mentioned low frequency is adjusted
Device after counting, the modulated signal after exporting above-mentioned adjusting.
In an optional implementation manner, due to vehicle refitting etc., it may cause vehicle and replaced original-pack wheel
Tire and wheel hub, so that the regulating command needs with original-pack vehicle match are adjusted.It is persistently generated in low frequency signal generator low
When frequency signal, it was demonstrated that the tyre pressure sensor needs of vehicle interior continue to activate.Swash when to the same tyre pressure sensor
When operation living, after above-mentioned low frequency regulating device generates for the first time and exports the preset time after the modulated signal after adjusting, on
It states low frequency regulating device and generates regulating command more higher than former regulating command rank.
For example, signal-adjusting module generates the regulating command of car rank, the tyre pressure sensor in vehicle receive through
After modulated signal after the adjusting of rank regulating command amplification, activation failure.Signal-adjusting module needs to generate intercity cross-country
The regulating command of rank, the Counter Value in signal-adjusting module adds 1, according to newly-generated regulating command, signal-adjusting module
It generates and exports the modulated signal after adjusting.
In another example modulated signal has already passed through regulating command when the Counter Value in signal-adjusting module reaches threshold value
Multiple amplifying operation, and low frequency signal generator persistently generates low frequency signal, it was demonstrated that tyre pressure sensor still activates failure.On
Signal-adjusting module output alerting signal is stated, user is reminded to check and replace the tyre pressure sensor in diagnosis vehicle.
According to a kind of low frequency signal adjusting method provided by the embodiments of the present application, when detecting that low frequency signal generator is in
When working condition, start low frequency signal regulating device, and the modulated signal received is adjusted, the modulation after output adjusting
Signal.Implement the scheme of the application, the activation requirement of the tyre pressure sensor in various situations can be suitable for, for adjusting activation
Signal magnitude, to improve activation efficiency.
Fig. 3-a is please referred to, Fig. 3-a is a kind of structural representation of low frequency signal regulating device provided by the embodiments of the present application
Figure.
As shown in Fig. 3-a, which is connected with low frequency signal generation device, which adjusts dress
It sets including signal receiving module 1, signal-adjusting module 2 and signal control module 3.First output end of signal receiving module 1 and
Second output terminal is connected with the first input end of signal-adjusting module 2 and the second input terminal respectively, the modulation for will receive
Signal is transferred to signal-adjusting module 2；First output end of signal-adjusting module 2 and the first input end of signal control module 3
It is connected, for adjusting and exporting the modulated signal after adjusting；Signal control module 3 is used for the work feelings according to low frequency generator
Condition sends to signal receiving module and instructs.
Signal receiving module 1, for receiving modulated signal after detecting that low frequency signal generator generates low frequency signal；
Signal control module 3, for judging whether the modulated signal meets adjusting condition；
Signal-adjusting module 2 generates after adjusting for when meeting the adjusting condition, adjusting the modulated signal
Modulated signal；
The signal-adjusting module 2, the modulated signal after being also used to export the adjusting.
In an optional implementation manner, above-mentioned signal control module 3 is also used to, and controlling the end OC is high level,
Forbid the bidirectional thyristor.
In another optional implementation, above-mentioned signal control module 3 is specifically used for, and judges that the modulated signal is
It is no to carry the low frequency signal；If the modulated signal carries the low frequency signal, judge described in the modulated signal satisfaction
Adjusting condition；Otherwise, detect whether the low frequency signal generator stops generating the low frequency signal.
For example, above-mentioned signal control module 3 judges that above-mentioned modulated signal is the carrier signal that frequency is 125kHZ, i.e., it is above-mentioned
Without carrying low frequency signal in modulated signal.Above-mentioned signal control module 3 detects whether above-mentioned low frequency signal generator stops producing
Raw above-mentioned low frequency signal, needs the low frequency signal regulating device to work on for judging whether.
In another example above-mentioned signal control module 3 detects that above-mentioned low frequency signal generator stops generating above-mentioned low frequency signal
When, judge that the low frequency signal regulating device is no longer needed to work on, the LC vibration in above-mentioned 3 control device of signal control module
The timely failure of oscillation of circuit is swung, the modulated signal after output is adjusted outward is stopped.
In another optional implementation, the signal-adjusting module 2 is specifically used for, and obtains the low frequency signal
Frequency；According to the frequency of the low frequency signal, the modulated signal is adjusted, and generates the modulated signal after adjusting.
For example, frequency of the above-mentioned signal-adjusting module 2 according to the low frequency signal of acquisition, forbids pin 1 (ENA), so that most
Only modulated signal enters above-mentioned signal-adjusting module 2 all the way eventually, and adjusts to the capacitor in above-mentioned signal-adjusting module 2
It is whole, so that modulated signal is adjusted accordingly.
In another example frequency of the above-mentioned signal-adjusting module 2 according to the low frequency signal of acquisition, so that two-way modulated signal is whole
Into above-mentioned signal-adjusting module 2, and in above-mentioned signal-adjusting module 2 capacitor and power supply be adjusted so that modulation
Signal is accordingly adjusted.
In another example when above-mentioned signal-adjusting module 2 has carried out Primary regulation to above-mentioned low frequency signal, and by counter
Value plus 1, when above-mentioned Counter Value reaches threshold value, i.e., when having reached threshold value to the adjusting number of the low frequency signal, above-mentioned letter
Number adjustment module 2 exports alerting signal.
In another possible implementation, the signal control module is also used to, when detecting the low frequency signal
When generator stops generating the low frequency signal, stop receiving the modulated signal.
For example, when above-mentioned signal control module 3 detects that low frequency signal generator has stopped generating above-mentioned echo signal,
No longer needing the device to send includes the modulated signal of echo signal, and it is low level, delay that signal control module 3, which controls the end OC,
It is high level that preset time controls the end OC again, and forbids above-mentioned bidirectional thyristor D1, so that in above-mentioned signal-adjusting module 2
The timely failure of oscillation of LC oscillating circuit.
In another possible implementation, the signal control module is specifically used for, and controlling the end OC is low electricity
It is flat, the bidirectional thyristor is connected；The signal-adjusting module is specifically used for, and is generated using the LC oscillating circuit and exports institute
State the modulated signal after adjusting.
In another possible implementation, the signal control module is also used to, using prefixed time interval as the period
Detect whether the low frequency signal generator generates low frequency signal.
According to a kind of low frequency signal regulating device provided by the embodiments of the present application, when detecting that low frequency signal generator is in
When working condition, the modulated signal received is adjusted, the modulated signal after output adjusting.Implement the scheme of the application,
It can be suitable for the activation requirement of the tyre pressure sensor in various situations, for adjusting activation signal size, to improve sharp
Active rate.
Fig. 3-b is please referred to, Fig. 3-b is a kind of exemplary circuit diagram of low frequency signal regulating device shown in Fig. 3-a.
Wherein:
In Fig. 3-b, the signal receiving module 1 in Fig. 3-a includes two output ends, and A output end is that above-mentioned signal connects
The first output end of module 1 is received, B output end is the second output terminal of above-mentioned signal receiving module 1, and signal receiving module 1 will connect
The modulated signal received is output to signal-adjusting module 2 by A output end and B output end respectively.
In Fig. 3-b, the signal-adjusting module 2 in Fig. 3-a may include mosfet driver 21 and LC oscillation herein
Circuit 22.The pin 1 (ENA) and pin 8 (ENB) of above-mentioned mosfet driver 21 be above-mentioned mosfet driver 21 enable it is defeated
Enter end；The pin 3 of above-mentioned mosfet driver 21 is grounded；The pin 2 (INA) of above-mentioned mosfet driver 21 is above-mentioned signal tune
The first input end of module 2 is saved, which is connected with the A output end of above-mentioned signal receiving module 1；Above-mentioned mosfet driver 21
Pin 4 (INB) be above-mentioned signal-adjusting module 2 the second input terminal, the B of the pin and above-mentioned signal receiving module 1 exports
End is connected；The pin 6 of above-mentioned mosfet driver 21 connects the first power supply VLF；The pin 7 of above-mentioned mosfet driver 21
(OUTA) it is connected with the capacitor C1 of above-mentioned LC oscillating circuit 22；The pin 5 (OUTB) and above-mentioned LC of above-mentioned mosfet driver 21
The inductance L1 of oscillating circuit 22 is connected；Connection type between the capacitor C1 and inductance L1 of above-mentioned LC oscillating circuit 22 is to connect.
Optionally, the capacitor C1 of above-mentioned LC oscillating circuit 22 is tunable capacitor, the frequency of above-mentioned LC oscillating circuit 22 with
The increase of tunable capacitor and reduce, by changing the size of capacitor C1 in above-mentioned LC oscillating circuit 22, current LC can be vibrated electricity
The frequency of oscillation on road 22 is adjusted to optimum frequency, so that activation waveform is optimized.
The operation logic of the circuit are as follows: above-mentioned mosfet driver 21 supports multiple signals input: if pin 1 (ENA) and
Pin 8 (ENB) all receives modulated signal, defeated to LC oscillating circuit 22 by corresponding pin 7 (OUTA) and pin 5 (OUTB)
Modulated signal out；If forbidding the pin 1 (ENA) or pin 8 (ENB) in mosfet driver 21, above-mentioned MOSFET can be made
A pin in pin 2 (INA) or pin 4 (INB) in driver 21 receives modulated signal.For example, by forbidding drawing
Foot 1 (ENA), so that only pin 4 (INB) can just receive modulated signal in above-mentioned mosfet driver 21, it is corresponding, only
Pin 5 (OUTB) could export modulated signal to connected LC oscillating circuit 22.Above-mentioned mosfet driver 21 is supported variable
Voltage control: the pin 6 of above-mentioned mosfet driver 21 connects the first power supply VLF, and above-mentioned mosfet driver 21 is in the first electricity
In the case that the voltage of source VLF changes, it can still work normally.So the electricity of the first power supply VLF of change can be passed through
Size is pressed, the amplitude of the oscillation for the above-mentioned LC oscillating circuit 22 being connected with above-mentioned mosfet driver 21 is controlled.
Optionally, above-mentioned first power supply VLF is variable power supply, and voltage change section is 4.5V~18V.
Optionally, a kind of preferable voltage of above-mentioned first power supply VLF is 11V.
Optionally, the packing forms of the mosfet driver 21 in above-mentioned signal-adjusting module 2 are plastics dual inline type
Any packing forms in encapsulation or small outline integrated circuit encapsulation.
Optionally, the mosfet driver 21 in above-mentioned signal-adjusting module 2 is double high speed power MOSFET driving devices.
Optionally, the mosfet driver 21 in above-mentioned signal-adjusting module 2 is the bis- high speed power MOSFET drivings of 4.0A
Device.
Optionally, the 21 model MCP14E5 of mosfet driver in above-mentioned signal-adjusting module 2.
Further, in Fig. 3-b, the signal control module 3 in Fig. 3-a may include the first power supply 31 herein, double
It leads to thyristor D1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th end resistance R5, OC and partly
Body triode Q1.First resistor R1 to the 5th resistance R5 plays the role of partial pressure.When above-mentioned signal control module 3 detects
When stating low frequency signal generation device generation low frequency signal, the control end OC is low level, and above-mentioned bidirectional thyristor D1 is connected, so that
22 fast start-up of LC oscillating circuit in above-mentioned signal-adjusting module 2；When above-mentioned signal control module 3 detects above-mentioned low frequency letter
When number generation device stops generating low frequency signal, first controlling the end OC is low level, the end OC is controlled after the right times that are delayed again as height
Level, and above-mentioned bidirectional thyristor D1 is forbidden to be connected, so that the LC oscillating circuit 22 in above-mentioned signal-adjusting module 2 stops in time
Vibration.
According to a kind of low frequency adjusting circuit provided by the embodiments of the present application, by receiving signal in adjustment signal adjustment module
Quantity and control signal control module in level height, to control whether signal-adjusting module sends modulated signal.It is real
The scheme of the application is applied, the transmission of modulated activation signal can be controlled, suitable for the tire pressure sensing in various situations
The activation requirement of device.
The computer readable storage medium can be the storage inside mould of terminal device described in aforementioned any embodiment
Group, such as the hard disk or memory of terminal device.The computer readable storage medium is also possible to the outside of the terminal device
The plug-in type hard disk being equipped in storage equipment, such as the terminal device, intelligent memory card (Smart Media Card, SMC),
Secure digital (Secure Digital, SD) card, flash card (Flash Card) etc..Further, described computer-readable to deposit
Storage media can also both including the terminal device storage inside mould group and also including External memory equipment.It is described computer-readable
Storage medium is for other programs and data needed for storing the computer program and the terminal device.The computer
Readable storage medium storing program for executing can be also used for temporarily storing the data that has exported or will export.
Those of ordinary skill in the art may be aware that mould described in conjunction with the examples disclosed in the embodiments of the present disclosure
Block and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially
Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not
It is considered as beyond scope of the present application.
It is apparent to those skilled in the art that for convenience of description and succinctly, the mould of foregoing description
The specific work process of group, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed method, it can be by others side
Formula is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the mould group, only one
Kind of logical function partition, there may be another division manner in actual implementation, for example, multiple mould groups or component can combine or
It is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or mould group,
It is also possible to electricity, mechanical or other form connections.
The group of mould as illustrated by the separation member may or may not be physically separated, aobvious as mould group
The component shown may or may not be physics mould group, it can and it is in one place, or may be distributed over multiple
In network modules.Some or all of mould group therein can be selected to realize the embodiment of the present application scheme according to the actual needs
Purpose.
It, can also be in addition, can integrate in a processing mould group in each functional module group in each embodiment of the application
It is that each mould group physically exists alone, is also possible to two or more mould groups and is integrated in a mould group.It is above-mentioned integrated
Mould group both can take the form of hardware realization, can also be realized in the form of software function mould group.
If the integrated mould group is realized in the form of software function mould group and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of low frequency signal adjusting method, which is characterized in that be applied to low frequency signal regulating device, the low frequency signal is adjusted
Device includes signal receiving module, signal-adjusting module and signal control module；The low frequency signal regulating device and low frequency are believed
The connection of number generator；The signal control module includes bidirectional thyristor, triode, the first power supply, the end OC and one or more
Resistance；The signal-adjusting module includes mosfet driver and LC oscillating circuit；The described method includes:
After detecting that low frequency signal generator generates low frequency signal, modulated signal is received；
Judge whether the modulated signal meets adjusting condition；
When meeting the adjusting condition, the modulated signal is adjusted, generates the modulated signal after adjusting；
Modulated signal after exporting the adjusting.
2. the method according to claim 1, wherein described ought detect that low frequency signal generator generates low frequency letter
After number, modulated signal is received, comprising:
Controlling the end OC is high level, forbids the bidirectional thyristor.
3. judging whether the modulated signal meets adjustment bar the method according to claim 1, wherein described
Part, comprising:
Judge whether the modulated signal carries the low frequency signal；
If the modulated signal carries the low frequency signal, judge that the modulated signal meets the adjusting condition；Otherwise, it examines
Survey whether the low frequency signal generator stops generating the low frequency signal.
4. adjusting the tune the method according to claim 1, wherein described when meeting the adjusting condition
Signal processed, and generate the modulated signal after adjusting, comprising:
Obtain the frequency of the low frequency signal；
According to the frequency of the low frequency signal, the modulated signal is adjusted, and generates the modulated signal after adjusting.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
When detecting that the low frequency signal generator stops generating the low frequency signal, stop receiving the modulated signal.
6. the method according to claim 1, wherein the modulated signal after the output adjusting, comprising:
Controlling the end OC is low level, and the bidirectional thyristor is connected；
It is generated using the LC oscillating circuit and exports the modulated signal after the adjusting.
7. the method according to claim 1, wherein the method is also wrapped before the reception modulated signal
It includes:
Whether low frequency signal is generated by low frequency signal generator described in cycle detection of prefixed time interval.
8. a kind of low frequency signal regulating device, the low frequency signal regulating device includes signal receiving module, signal-adjusting module
With signal control module；The low frequency signal regulating device is connect with low frequency signal generator；The signal-adjusting module includes
Mosfet driver and LC oscillating circuit；The signal control module includes bidirectional thyristor, triode, the first power supply, the end OC
And one or more resistance；Include:
The signal receiving module, for receiving modulated signal after detecting that low frequency signal generator generates low frequency signal；
The signal control module, for judging whether the modulated signal meets adjusting condition；
The signal-adjusting module generates the tune after adjusting for when meeting the adjusting condition, adjusting the modulated signal
Signal processed；
The signal-adjusting module, for exporting the modulated signal after the adjusting.
9. device according to claim 8, which is characterized in that the signal control module is for controlling the end OC
High level forbids the bidirectional thyristor.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The method as described in any one of claims 1 to 7 is realized when being executed by processor.
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