CN108593960A - A kind of motor racing detection integrated circuit - Google Patents
A kind of motor racing detection integrated circuit Download PDFInfo
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- CN108593960A CN108593960A CN201810692988.0A CN201810692988A CN108593960A CN 108593960 A CN108593960 A CN 108593960A CN 201810692988 A CN201810692988 A CN 201810692988A CN 108593960 A CN108593960 A CN 108593960A
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- 238000001514 detection method Methods 0.000 title claims abstract description 98
- 230000003321 amplification Effects 0.000 claims abstract description 30
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 30
- 230000001133 acceleration Effects 0.000 claims description 15
- 239000000872 buffer Substances 0.000 claims description 11
- 210000001367 artery Anatomy 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
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- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The embodiment of the present invention provides a kind of motor racing detection integrated circuit, belongs to technical field of vehicle.The motor racing detects status signal of the integrated circuit by the tire of signal acquisition module collection vehicle, signal amplification module is transmitted to roll detection module after being amplified processing to status signal, period of the roll detection module based on amplified status signal judges whether the vehicle is in transport condition, the phase of the status signal is obtained by period of the phase detecting module based on amplified status signal, the phase is exported to middle control module, so that the middle control module obtains the location information that the motor racing detects integrated circuit according to the phase.Motor racing can be reduced using this programme and detect IC power consumption, and omit external equipment and simplify automatic positioning process.
Description
Technical field
The present invention relates to technical field of vehicle, and integrated circuit is detected in particular to a kind of motor racing.
Background technology
Generally when the information to tire is detected, generally by the tire pressure detection chip on tire solid
It fixes time and sends radiofrequency signal to console to transmit the relevant information of tire, it is contemplated that the seal of automobile tire, existing
The power supply environment of detection chip is the button cell of volume very little, is asked so reducing power consumption as far as possible and being just the largest to state.
So that the power consumption of tire pressure chip is saved, it can then carry out the acquisition and transmission of frequent tire information when driving in vehicle, it is quiet
It can only or before manufacture not update the data for a long time.It is to sample to obtain by ADC using acceleration device in the prior art
Acceleration value come judge vehicle whether be in transport condition, but ADC module generally have high power consumption, so, for tire pressure examine
It surveys chip and so that it has a short service life since its power consumption is higher.In addition, since vehicle generally has, there are four the above tire, tire pressure inspections
It surveys chip to be mounted on each tire, in order to realize the accurate monitoring to information such as each tyre temperature, pressure, it is necessary to by tire pressure
Detection chip and tire location are mapped, existing technology using external low-frequency wireless equipment carry out tire pressure detection chip with
The matching one by one of tire, this mode increase external equipment, also limit matched condition.
Invention content
The purpose of the present invention is to provide a kind of motor racings to detect integrated circuit, can improve the above problem.
What the embodiment of the present invention was realized in：
A kind of motor racing detection integrated circuit, the motor racing detection integrated circuit include signal acquisition module, letter
Number amplification module, roll detection module and phase detecting module, the signal acquisition module connect with the signal amplification module
It connects, the roll detection module, the phase detecting module are connect with the signal amplification module；
The signal acquisition module, the status signal of the tire for collection vehicle；
The signal amplification module, for being amplified processing to the status signal；
The roll detection module judges whether the vehicle is located for the number of cycles based on amplified status signal
In transport condition；
The phase detecting module obtains the phase of the status signal for the period based on amplified status signal
Position exports the phase to middle control module, so that the middle control module obtains the motor racing detection collection according to the phase
At the location information of circuit.
In preferred embodiments of the present invention, the roll detection module includes first comparator and the first counting module,
The first comparator is connect with the signal amplification module, and the first comparator is connect with first counting module, institute
It states first comparator to be used to amplified status signal being compared with preset reference threshold value, the pulse signal after obtaining relatively
Output is to first counting module, and first counting module is for counting the pulse signal, in the pulse
When the pulse number of signal is more than preset value, determine that the vehicle is in transport condition.
In preferred embodiments of the present invention, the phase detecting module includes filter module and detection module, the filter
Wave module is connect with the detection module, and the filter module is connect with the signal amplification module, and the filter module is used for
Output to the detection module, the detection module is used for based on after filtering after being filtered to amplified status signal
Period of status signal obtain the phase of the status signal, export the phase to middle control module, so that the middle control mould
Root tuber obtains the location information that the motor racing detection integrated circuit is sent out according to the phase.
In preferred embodiments of the present invention, the filter module includes low-pass filter, high-pass filter, clock mould
Block, the second comparator and buffer, the low-pass filter are connect with the signal amplification module, the low-pass filter with
The high-pass filter connection, the high-pass filter are connect with the detection module, the high-pass filter and the buffering
Device connects, and the buffer is connect with second comparator, and second comparator is connect with the clock module, when described
Clock module is connect with the low-pass filter, the high-pass filter respectively.
In preferred embodiments of the present invention, the detection module includes third comparator and the second counting module, described
Third comparator is connect with the high-pass filter, and the third comparator is connect with second counting module, and described second
Counting module with the middle control module for connecting.
In preferred embodiments of the present invention, the signal acquisition module is that piezoelectric acceleration transducer or appearance formula accelerate
Spend sensor.
In preferred embodiments of the present invention, the signal acquisition module includes sensor assembly and is filtered module,
The sensor assembly is connect with the module that is filtered.
In preferred embodiments of the present invention, the motor racing detection integrated circuit further includes temperature detecting module, institute
It states temperature detecting module to connect with the roll detection module, the temperature detecting module is used to be in traveling shape in the vehicle
The temperature information of collection vehicle tire when state.
In preferred embodiments of the present invention, the motor racing detection integrated circuit further includes pressure detecting module, institute
It states pressure detecting module to connect with the roll detection module, the pressure detecting module is used to be in traveling shape in the vehicle
The pressure information of collection vehicle tire when state.
In preferred embodiments of the present invention, the motor racing detection integrated circuit further includes wireless module, the nothing
For being connect with the middle control module, the wireless module is also connect with the phase detecting module wire module.
The advantageous effect of the embodiment of the present invention is：
The embodiment of the present invention provides a kind of motor racing detection integrated circuit, and the motor racing detection integrated circuit includes
Signal acquisition module, signal amplification module, roll detection module and phase detecting module, the motor racing detect integrated circuit
By the status signal of the tire of signal acquisition module collection vehicle, after signal amplification module is amplified processing to status signal
It is transmitted to roll detection module, whether number of cycles of the roll detection module based on amplified status signal judges the vehicle
In transport condition, the status signal is obtained by period of the phase detecting module based on amplified status signal
Phase exports the phase to middle control module, is detected so that the middle control module obtains the motor racing according to the phase
The location information of integrated circuit.In the present solution, judging vehicle based on the number of cycles of status signal by roll detection module
Whether it is in transport condition, acceleration value is obtained after being sampled without the adc circuit using high power consumption to judge
Whether vehicle is in transport condition, thus reduces the power consumption of motor racing detection integrated circuit, extends motor racing detection
The service life of integrated circuit.Also, by the phase of phase detecting module output status signal, so that middle control module can root
Accurate, the real-time positioning to tire is realized according to phase information, and each tire is operated one by one without manpower intervention, to
Can accurate monitoring easily be realized to specific target tire, be not necessarily to the matching of external low frequency wireless device, realize tire positioning
The dependence to external low-frequency wireless equipment is decreased while function.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram that a kind of motor racing provided in an embodiment of the present invention detects integrated circuit；
Fig. 2 is the structure diagram that another motor racing provided in an embodiment of the present invention detects integrated circuit；
Fig. 3 is a kind of input-output wave shape schematic diagram of first comparator provided in an embodiment of the present invention；
Fig. 4 is a kind of frequency response curve of bandpass filter provided in an embodiment of the present invention；
Fig. 5 is a kind of waveform adjustment schematic diagram of filter module provided in an embodiment of the present invention；
Fig. 6 is a kind of input-output wave shape schematic diagram of second counting module provided in an embodiment of the present invention.
Icon：100- motor racings detect integrated circuit；110- signal acquisition modules；120- signal amplification modules；130-
Roll detection module；140- phase detecting modules；132- first comparators；The first counting modules of 134-；142- filter modules；
144- detection modules；1421- low-pass filters；1422- high-pass filters；1423- clock modules；The second comparators of 1424-；
1425- buffers；1442- third comparators；The second counting modules of 1444-.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Usually implement here with the present invention of proposition described in attached drawing
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is instruction or implies relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that being understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and is obtained in specification, claims and attached drawing.
Fig. 1 is please referred to, Fig. 1 is the structural frames that a kind of motor racing provided in an embodiment of the present invention detects integrated circuit 100
Figure, the motor racing detection integrated circuit 100 includes signal acquisition module 110, signal amplification module 120, roll detection mould
Block 130 and phase detecting module 140, the signal acquisition module 110 are connect with the signal amplification module 120, the rolling
Dynamic detection module 130, the phase detecting module 140 are connect with the signal amplification module 120.
The signal acquisition module 110, the status signal of the tire for collection vehicle.
Wherein, signal acquisition module 110 is the acceleration transducer on the tire of vehicle, the acceleration transducer
Can be piezoelectric acceleration transducer or appearance formula acceleration transducer.By taking kart as an example, there are four tires for general tool, should
Motor racing detection integrated circuit 100 is respectively arranged on four tires, so each tire is mounted on acceleration transducer,
For tire in rolling process, acceleration transducer can collect the compression signal of tire, the state of the compression signal, that is, tire
Signal, status signal are generally the small signal of simple alternating current of voltage or capacitance, and the period of the status signal is all as tire rolls
Phase and change, amplitude is constant, and frequency, for the subsequent processing to status signal, is also needed to shape generally in 2Hz between 50Hz
State signal is amplified processing.
The signal amplification module 120, for being amplified processing to the status signal.Signal amplification module 120 is
Amplifier, after the amplification of signal amplification module 120, amplitude will amplify status signal up to 500mV, signal amplification module 120
Status signal transmission afterwards is to roll detection module 130 and phase detecting module 140.
The roll detection module 130 judges that the vehicle is for the number of cycles based on amplified status signal
No to be in transport condition, transport condition refers to that the tire of vehicle is in progressive rolling movement.
As an implementation, the roll detection module 130 can detect the amplified status signal one
Whether sine wave signal is continuous in fixing time, if so, also, its range value when continuously several periods are more than certain value, then
It can determine that the vehicle is in transport condition.
In embodiments of the present invention, Fig. 2 is please referred to, the roll detection module 130 includes first comparator 132 and first
Counting module 134, the first comparator 132 are connect with the signal amplification module 120, the first comparator 132 and institute
State the connection of the first counting module 134, the first comparator 132 be used for by amplified status signal and preset reference threshold value into
Row compares, and to first counting module 134, first counting module 134 is used for the output of pulse signal after obtaining relatively
The pulse number of the pulse signal is counted, when the pulse number of the pulse signal is more than preset value, is then judged
The vehicle is in transport condition.
Wherein, the arteries and veins that first comparator 132 obtains after being compared amplified status signal with preset reference threshold value
Signal is rushed as shown in figure 3, the preset reference threshold value of first comparator 132 can be adjusted to 400mV from 100mV on demand, then is put
The range value of status signal after big is more than that the part of preset reference threshold value generates a corresponding pulse signal.
First counting module 134 is a counter, can be counted to the period of the pulse signal of above-mentioned acquisition
Number, if pulse signal occur in continuous several periods (such as 5-10 period), i.e. the pulse number of pulse signal is more than default
When being worth (5-10), then it can determine whether that vehicle is in transport condition, i.e., tire is in rolling condition, otherwise judges that vehicle is in static
State.
So can be to judge vehicle by the status signal of the tire of acquisition by above-mentioned roll detection module 130
It is no to be in transport condition, complicated detection circuit is not needed as a result, to judge the transport condition of vehicle, to save
Motor racing detects the power consumption of integrated circuit 100.The result of roll detection can be used for controlling other moulds in system for detecting tire pressure
Block, such as temperature detection, pressure detecting, wireless transmission etc. just control the normal work of system for detecting tire pressure when detecting vehicle rolling
Make, if roll detection result remains static for vehicle, system for detecting tire pressure is made to enter standby mode, can had in this way
Effect reduces chip overall power, extends system for detecting tire pressure service life.
In embodiments of the present invention, the phase detecting module 140 includes filter module 142 and detection module 144, described
Filter module 142 is connect with the detection module 144, and the filter module 142 is connect with the signal amplification module 120, institute
Filter module 142 is stated for output after being filtered to amplified status signal to the detection module 144, the inspection
The phase that module 144 obtains the status signal for the period based on filtered status signal is surveyed, exports the phase extremely
Middle control module, so that the middle control module obtains the pass that the motor racing detection integrated circuit 100 is sent out according to the phase
In the location information of tire.
Wherein, since vehicle jolts, the status signal for the tire that signal acquisition module 110 acquires generally can jagged letter
Number, the frequency of burr is at relative high frequency, so in order to be filtered out to burr, by filter module 142 to amplified shape
State signal is filtered.
The filter module 142 includes low-pass filter 1421, high-pass filter 1422, the ratio of clock module 1423, second
Compared with device 1424 and buffer 1425, the low-pass filter 1421 is connect with the signal amplification module 120, the low pass filtered
Wave device 1421 is connect with the high-pass filter 1422, and the high-pass filter 1422 is connect with the detection module 144, described
High-pass filter 1422 is connect with the buffer 1425, and the buffer 1425 is connect with second comparator 1424, institute
The second comparator 1424 is stated to connect with the clock module 1423, the clock module 1423 respectively with the low-pass filter
1421, the high-pass filter 1422 connects.
Low-pass filter 1421 forms a bandpass filter with high-pass filter 1422, can filter out in status signal
Burr signal, clock module 1423, the second comparator 1424 and buffer 1425 can form a reponse system, purpose
It is the cutoff frequency for adjusting bandpass filter, realization also adjusts the amplitude of filtered status signal to protect while filtering out burr
Card different frequency signals can be close to 500mV in filtered device amplitude.
The cutoff frequency of bandpass filter is related with clock frequency, more high then its cutoff frequency of clock frequency of input more
It is high.The frequency response curve of bandpass filter is as shown in Figure 4, wherein f1, f2 are respectively two cutoff frequency, and f1 is in 1Hz-
Between 30Hz, f2 is between 2Hz~60Hz.Filtered status signal enters the second comparator after first-level buffer device 1425
1424 and pre-set datum (100mV~300mV) export two control signal up and dn more afterwards.Up and dn letters
Number it is not simultaneously height, it is assumed that the signal for entering the second comparator 1424 is too small, and output up is height, and dn is low, clock module
1423, which adjust output clock signal frequencies, gets higher, and the cutoff frequency of bandpass filter is f1 ', f2 ' by original f1, f2 variation,
The output signal of adjustment postfilter will become larger, if signal, greater than threshold value, up turns over low, and dn turns over height, bandpass filter cut-off
So that amplitude output signal becomes smaller up to amplitude reaches requirement after frequency is adjusted again, up, dn signal are just simultaneously low, and system is complete
At adjusting, entire adjustment process can be observed in Figure 5.
The detection module 144 includes third comparator 1442 and the second counting module 1444, the third comparator
1442 connect with the high-pass filter 1422, and the third comparator 1442 is connect with second counting module 1444, institute
The second counting module 1444 is stated for being connect with the middle control module.
As shown in fig. 6, the output signal simultaneous transmission of high-pass filter 1422 to third comparator 1442 carries out zero passage ratio
Compared with, obtain two output signals Vout_p and Vout_n, in the second counting module 1444, using clock to Vout_p and
The high level stage of two signals of Vout_n is counted, and count results can characterize input signal (i.e. filtered status signal)
Cycle information.When the counting cycle stability of input signal is in +/- 5% range, it is considered as vehicle and is traveling at the uniform speed, at this time again
The point that input signal reaches certain stationary phase every time is extrapolated according to the count value in each period, input signal when such as 1/4 period
For high level, then phase detecting module 140 in the phase of the moment output status signal to middle control module so that middle control module root
The location information that the motor racing detects integrated circuit 100 is obtained according to the phase.
In the present embodiment, the phase detecting module 140 in integrated circuit 100 can be detected by motor racing to realize pair
The status signal of acceleration transducer acquisition on vehicle tyre carries out the judgement of phase, subsequently to be carried out certainly to the tire of vehicle
Dynamic positioning enormously simplifies algorithm difficulty, while also saving power consumption.
As an implementation, the signal acquisition module 110 includes sensor assembly and is filtered module, described
Sensor assembly is connect with the module that is filtered.
Specifically, sensor assembly can be above-mentioned piezoelectric acceleration transducer or appearance formula acceleration transducer, filter
Wave processing module is high-pass filter, wherein clock module 1423 is also connect with signal amplification module 120, in signal acquisition mould
In block 110, high-pass filtering processing is carried out to the status signal of sensor assembly acquisition, has filtered out the D. C. value on status signal.
And since status signal changes between 2~50Hz, the signal that may result in different frequency passes through 120 back panel of signal amplification module
It spends variant, in order to weaken this influence, circuit energy quick response is allowed, also using the output signal fclk of clock module 1423
With the relationship of status signal frequency, i.e. the more high then fclk frequencies of status signal frequency are higher, put by fclk feedback adjustment signals
The gain amplifier of big module 120 makes circuit have the effect of quick response.I.e. when status signal frequency is relatively low, signal acquisition
The signal amplitude that module 110 exports is smaller, and fclk is relatively low, is become larger by feedback regulation gain, to reduce signal acquisition module
Quick response is realized in the influence that high-pass filter brings signal amplitude in 110, and vice versa.
In addition, in order to realize the temperature detection to vehicle tyre, the motor racing detection integrated circuit 100 further includes temperature
Detection module is spent, the temperature detecting module is connect with the roll detection module 130, and the temperature detecting module is used in vehicle
Be in transport condition when collection vehicle tire temperature information.
When roll detection module 130 detects that vehicle is in transport condition, trigger signal can be transmitted to temperature detection mould
Block, triggering temperature detecting module carry out temperature acquisition, and the temperature information of acquisition can be sent to vehicle-mounted end by temperature detecting module
End, user can get the temperature information of tire by car-mounted terminal as a result, be monitored so as to the temperature to tire, prevent
Only tire because temperature is excessively high and there is a situation where blow out.
As an implementation, the motor racing detection integrated circuit 100 may also include alarm module, the alarm
Module is connect with the temperature detecting module, and the temperature information of acquisition is sent to alarm module by the temperature detecting module, report
Alert module sends out alarm when temperature information is more than preset value, so as to remind user to find that the temperature of tire is excessively high in time
The case where, avoid tire because temperature is excessively high and there is a situation where blow out.
As an implementation, the motor racing detection integrated circuit 100 further includes pressure detecting module, the pressure
Power detection module is connect with the roll detection module 130, and the pressure detecting module is used to be in traveling shape in the vehicle
The pressure information of collection vehicle tire when state.
When roll detection module 130 detects that vehicle is in transport condition, trigger signal can be transmitted to pressure detecting mould
Block, triggering pressure detecting module carry out pressure information acquisition, and the pressure information of acquisition can be sent to vehicle by pressure detecting module
Mounted terminal, as a result, user the pressure information of tire can be got by car-mounted terminal, supervised so as to the tire pressure to tire
Control, prevent tire because tire pressure is excessively high and there is a situation where blow out.
As an implementation, the motor racing detection integrated circuit 100 further includes wireless module, the wireless mould
For being connect with the middle control module, the wireless module is also connect with the phase detecting module 140 block.
Phase can be sent to middle control module by motor racing detection integrated circuit 100 by wireless module, avoid vehicle
Upper the problem of causing difficult wiring using physical routing, the wireless module can be the wireless modules such as bluetooth, WiFi.
In conclusion the embodiment of the present invention provides a kind of detection motor racing detection integrated circuit, the motor racing inspection
It includes signal acquisition module, signal amplification module, roll detection module and phase detecting module, automobile fortune to survey integrated circuit
Dynamic detection status signal of the integrated circuit by the tire of signal acquisition module collection vehicle, signal amplification module is to status signal
It is transmitted to roll detection module after being amplified processing, period of the roll detection module based on amplified status signal judges institute
State whether vehicle is in transport condition, described in period acquisition of the phase detecting module based on amplified status signal
The phase of status signal exports the phase to middle control module, so that the middle control module obtains the vapour according to the phase
The location information of vehicle motion detection integrated circuit.In the present solution, passing through number of cycles of the roll detection module based on status signal
To judge that vehicle whether in transport condition, is accelerated after being sampled without the adc circuit using high power consumption
Angle value come judge vehicle whether be in transport condition, thus reduce motor racing detection integrated circuit power consumption, extend vapour
The service life of vehicle motion detection integrated circuit.Also, by the phase of phase detecting module output status signal, so that middle control
Module can realize the automatic accurate positioning to tire according to phase, be operated one by one to each tire without manpower intervention,
So as to easily realize accurate monitoring to specific target tire, it is not necessarily to the matching of external low frequency wireless device, realizes tire
The dependence to external low-frequency wireless equipment is decreased while positioning function.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of motor racing detects integrated circuit, which is characterized in that the motor racing detection integrated circuit includes that signal is adopted
Collection module, signal amplification module, roll detection module and phase detecting module, the signal acquisition module are put with the signal
Big module connection, the roll detection module, the phase detecting module are connect with the signal amplification module；
The signal acquisition module, the status signal of the tire for collection vehicle；
The signal amplification module, for being amplified processing to the status signal；
Whether the roll detection module judges the vehicle in row for the number of cycles based on amplified status signal
Sail state；
The phase detecting module obtains the phase of the status signal for the period based on amplified status signal, defeated
Go out the phase to middle control module, so that the middle control module obtains the motor racing according to the phase detects integrated circuit
The location information sent out.
2. motor racing according to claim 1 detects integrated circuit, which is characterized in that the roll detection module includes
First comparator and the first counting module, the first comparator are connect with the signal amplification module, the first comparator
It is connect with first counting module, the first comparator is used to carry out amplified status signal and preset reference threshold value
Compare, the output of pulse signal after obtaining relatively to first counting module, first counting module is used for the arteries and veins
It rushes signal to be counted, when the pulse number of the pulse signal is more than preset value, determines that the vehicle is in transport condition.
3. motor racing according to claim 2 detects integrated circuit, which is characterized in that the phase detecting module includes
Filter module and detection module, the filter module are connect with the detection module, and the filter module amplifies with the signal
Module connects, and the filter module exports after being used to be filtered amplified status signal to the detection module,
The detection module obtains the phase of the status signal for the period based on filtered status signal, exports the phase
To middle control module, so that the middle control module obtains the position that the motor racing detection integrated circuit is sent out according to the phase
Information.
4. motor racing according to claim 3 detects integrated circuit, which is characterized in that the filter module includes low pass
Filter, high-pass filter, clock module, the second comparator and buffer, the low-pass filter amplify with the signal
Module connects, and the low-pass filter is connect with the high-pass filter, and the high-pass filter is connect with the detection module,
The high-pass filter is connect with the buffer, and the buffer is connect with second comparator, second comparator
It is connect with the clock module, the clock module is connect with the low-pass filter, the high-pass filter respectively.
5. motor racing according to claim 4 detects integrated circuit, which is characterized in that the detection module includes third
Comparator and the second counting module, the third comparator are connect with the high-pass filter, the third comparator with it is described
Second counting module connects, and second counting module with the middle control module for connecting.
6. motor racing according to claim 1 detects integrated circuit, which is characterized in that the signal acquisition module is pressure
Electric-type acceleration transducer holds formula acceleration transducer.
7. motor racing according to claim 1 detects integrated circuit, which is characterized in that the signal acquisition module includes
Sensor assembly and it is filtered module, the sensor assembly is connect with the module that is filtered.
8. motor racing according to claim 1 detects integrated circuit, which is characterized in that the motor racing detection is integrated
Circuit further includes temperature detecting module, and the temperature detecting module is connect with the roll detection module, the temperature detection mould
Temperature information of the block for the collection vehicle tire when the vehicle is in transport condition.
9. motor racing according to claim 1 detects integrated circuit, which is characterized in that the motor racing detection is integrated
Circuit further includes pressure detecting module, and the pressure detecting module is connect with the roll detection module, the pressure detecting mould
Pressure information of the block for the collection vehicle tire when the vehicle is in transport condition.
10. motor racing according to claim 1 detects integrated circuit, which is characterized in that the motor racing detection collection
Further include wireless module at circuit, the wireless module for being connect with the middle control module, the wireless module also with it is described
Phase detecting module connects.
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