CN106989775A - It is a kind of can Intelligent Measurement abrasion and real time temperature brake pad and its detection method - Google Patents
It is a kind of can Intelligent Measurement abrasion and real time temperature brake pad and its detection method Download PDFInfo
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- CN106989775A CN106989775A CN201710265318.6A CN201710265318A CN106989775A CN 106989775 A CN106989775 A CN 106989775A CN 201710265318 A CN201710265318 A CN 201710265318A CN 106989775 A CN106989775 A CN 106989775A
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- 238000005299 abrasion Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 title claims abstract description 12
- 230000035945 sensitivity Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 206010019332 Heat exhaustion Diseases 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The present invention relates to it is a kind of can Intelligent Measurement abrasion and real time temperature brake pad and its detection method, belong to brake system of car automatic detection field.The present invention includes brake disc, clamp, brake pad, display, battery, digital temperature sensor, control module, brake pad Thickness sensitivity module, alarm module, battery is connected with brake pad Thickness sensitivity module and digital temperature sensor respectively, it is connected again with control module, control module is connected with display and LED buzzers respectively；Brake pad Thickness sensitivity module includes multiple precision resistances, and each precision resistance is connected and then is connected in control module with a fixed value resistance respectively, and parallel connection is connected with battery again between precision resistance.The present invention improves the service life of brake pad, reduces the process detected to brakes and number of times；Abrasion condition can more accurately be measured and judge whether brake pad and brake disc correctly contact；Brakes temperature can be detected in real time, it is to avoid heat exhaustion causes braking effect weak.
Description
Technical field
The present invention relates to it is a kind of can Intelligent Measurement abrasion and real time temperature brake pad and its detection method, belong to automobile system
Dynamic system automation detection field.
Background technology
Braking automobile obtains the effect of car deceleration by the interaction of brake disc and brake pad, is automotive safety
Run an indispensable part.Automobile brake relies on the rubbing action of brake disc and brake pad, inevitably
Loss can be caused to braking brake pad, big calorimetric can be produced under the rubbing action of brake disc and brake pad in automobile brake
Amount, causes brake system temperature too high, causes heat exhaustion phenomenon so that braking effect weakens.The detection of traditional braking brake pad,
One, by way of tearing car open, i.e., tire is unloaded, takes out braking brake pad and observe its thickness, detect tedious process, and essence
Exactness is not high；Secondly, brake pad and the sound of brake disc friction when listening brake.This detection mode error is very big, together
When need experienced people just to recognize wherein difference；Thirdly, vehicle has warning when braking brake pad is close to the limit
Sound, this detection mode error is very big, and braking brake pad now is already close to the limit, can have very big safety hidden
Suffer from；Four, patent：ZL 200720170133.9 mentions an embedding precision resistance inside brake pad, but is only the problem of exist
There is a resistance, unobvious to the Detection results of whole brake pad, a resistance can only detect neighbouring situation, it may appear that rub
Uneven situation about can not detect is wiped, it is also to influence very big to braking quality that brake pad, which is not installed, simultaneously as friction inequality
It is significantly less that reason will also result in brake pad service life.Conventional braking system also has that temperature is too high heat exhaustion phenomenon is occurred and lead
The phenomenon for causing braking effect to be deteriorated, the temperature of traditional brake system brakes frictional disk is undetectable, can so cause to stop
The too high braking distance of car system temperature is elongated to there is the phenomenon of traffic accident.
The content of the invention
The drawbacks of present invention is aiming at conventional braking system, the structure based on brake gear, in every piece of braking brake pad
On uniformly plus several precision resistances, and the voltage of brake pad is being detected by way of being powered to precision resistance and thickness is changed into
Form to reach effect that is accurate, conveniently measuring braking brake pad thickness.One digital temperature sensor is installed on clamp,
The temperature of brake system is detected in real time, and buzzer sends alarm sound when temperature is too high.What is added in driver's cabin is aobvious
Show two data of temperature that brake pad thickness and brake system are shown on device.
The technical scheme is that：It is a kind of can Intelligent Measurement abrasion and real time temperature brake pad, including drag friction
Disk 1, clamp 2, brake pad 3, display 6, battery 7, digital temperature sensor 8, control module 9, brake pad Thickness sensitivity module
10th, LED buzzers 11, the battery 7 is connected with brake pad Thickness sensitivity module 10 and digital temperature sensor 8 respectively, then with
Control module 9 is connected, and control module 9 is connected with display 6 and LED buzzers 11 respectively；
The brake pad Thickness sensitivity module 10 include multiple precision resistances 4, each precision resistance 4 respectively with a definite value
Then resistant series are connected in control module 9, and parallel connection is connected with battery 7 again between precision resistance 4；
Described that brake pad 3 is respectively fixed with the both sides of brake disc 1, brake disc 1 passes through clamp 2 and its both sides
Braked under the mutual rubbing action of brake pad 3, precision resistance 4 is through the length of brake pad 3 and precision resistance 4 and the thickness of brake pad 3
Degree is consistent, and digital temperature sensor 8 is fixed on clamp 2；
The control module 9 includes single-chip microcomputer, clock oscillation, reset circuit, A/D change-over circuits；
The control module 9 is arranged in enging cabin, and display 6 is placed on cabin interior.
Further, the display 6 uses liquid crystal LM016L, and the battery 7 is 5V dry cells.
Further, single-chip microcomputer model AT80C51, the A/D change-over circuit model in the control module 9
ADC0809。
Further, the contact portion of the precision resistance 4 and brake pad 3 wraps up one layer of megohmite insulant.
Further, the quantity of precision resistance 4 is 2-4 on the brake pad 3.
It is a kind of above-mentioned brake pad is worn and torn and real time temperature detection method be：The brake pad Thickness sensitivity module
10 pairs of resistance signals of its precision resistance 4 are measured, and voltage signal is passed into control module 9, and control module 9 is calculated and turned
Change into and length between precision resistance 4 is compared after the length of precision resistance 4, given error d Times is more than in error
It is alert, show the abrasion length average of precision resistance 4, the i.e. wear-thickness of brake pad 3 on the display 6 afterwards；Digital temperature
Temperature digital signal is transferred to control module 9 by sensor 8, and 9 pairs of data signals passed over of control module are changed simultaneously
Calculate, and show real time temperature on the display 6, LED buzzers 11 send alarm when temperature exceedes the numerical value of setting.
The conversion process of the length of precision resistance 4 is：RtFor precision resistance, VtTo drop to precision resistance RtOn electricity
Pressure, R0For fixed value resistance, V is to drop to fixed value resistance R0On voltage because fixed value resistance is the partial pressure V+ that connects with precision resistance
Vt=5 (V), the current value flowed through is identical, i.e.,Then
Resistance is obtained by physical equationρ is resistivity, and l is resistance length, and s is the cross-sectional area of resistance, willBring into, then the voltage dropped on precision resistanceResistance length
Because precision resistance 4 is embedded in brake pad 3 and both original depths are consistent, then the thickness D that brake pad 3 weares and teares
It is the length change of resistance, i.e.,Wherein l0For the initial length of precision resistance 4.
Length is relatively that the length between every any two precision resistance 4 is compared between the precision resistance 4,
Just do not alarmed when the absolute value of the length difference of each two precision resistance 4 is both less than given d, once there is the exhausted of one group of difference
It is more than given d to being worth, now triggers LED buzzers 11 and alarm, wherein d=0.20mm.
The operation principle of the present invention：
When automobile brake rubs, the thickness of brake pad 3 changes, and embedded precision resistance 4 and brake pad 3 is same
When be worn, the length of precision resistance 4, which changes, may result in its resistance and also changes, thus can be thick by brake pad 3
The change of degree is converted to the change of the resistance of precision resistance 4.Corresponding change, root also occur for the voltage on precision resistance 4 simultaneously
Change the relation with the resistance of precision resistance 4 and the length of precision resistance 4 according to the relevant voltage of precision resistance 4, calculated by control module 9
Voltage variety on each precision resistance 4, you can calculate the length change amount of each precision resistance 4, be that brake pad 3 is every
The depth information of the loss of individual part；Length to multiple precision resistances 4 is compared, when the length of each two precision resistance 4
The absolute value of difference is not just alarmed when being both less than given d, once the absolute value for having one group of difference is more than given d=
0.20mm, now triggering alarm, in the case where not alarming, calculates the residue length value average of each precision resistance 4, and will be equal
Value output, shows on the display 6.
The corner that display 6 is placed on cabin interior and does not influence driver to realize is fixed, and brake pad 3 is under braking action
Consumption is extremely slow, so driver only needs to have a look at display 6 once in a while with regard to that can control the Expenditure Levels of brake pad 3,
Go to change just when brake pad 3 soon runs out of, control machine module 9 is placed on enging cabin, when control machine module 9 occurs
Opening enging cabin is only needed to during problem just can be debugged or be changed to control machine.
Beneficial effects of the present invention：
1st, the service life of braking brake pad is improved so that every piece of brake pad is all by friction to the fast thickness close to damage；
2nd, the process detected to brakes and number of times are reduced；
3rd, avoid because brake pad overuses the potential safety hazard caused；
4th, multiple resistance judge jointly, can more accurately measure abrasion condition and judge whether are brake pad and brake disc
Whether correct contact, brake pad are installed correctly；
5th, the temperature of brakes can be detected in real time, it is to avoid braking effect is weak caused by heat exhaustion phenomenon.
Brief description of the drawings
Fig. 1 is installation diagram of the present invention；
Fig. 2 is brake system structure figure of the present invention；
Fig. 3 is brake pad top view；
Fig. 4 is circuit structure block diagram of the present invention；
Fig. 5 is brake pad Thickness sensitivity module circuit diagram；
In figure it is each marked as：1- brake discs；2- clamp；3- brake pads；4- precision resistances；5- bolts；6- displays；
7- batteries；8- digital temperature sensors；9- control modules；10- brake pad Thickness sensitivity modules；11-LED buzzers.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：As Figure 1-5, it is a kind of can Intelligent Measurement abrasion and real time temperature brake pad, including drag friction
Disk 1, clamp 2, brake pad 3, display 6, battery 7, digital temperature sensor 8, control module 9, brake pad Thickness sensitivity module
10th, LED buzzers 11, the battery 7 is connected with brake pad Thickness sensitivity module 10 and digital temperature sensor 8 respectively, then with
Control module 9 is connected, and control module 9 is connected with display 6 and LED buzzers 11 respectively；
The brake pad Thickness sensitivity module 10 include multiple precision resistances 4, each precision resistance 4 respectively with a definite value
Then resistant series are connected in control module 9, and parallel connection is connected with battery 7 again between precision resistance 4；
Described to be respectively fixed with brake pad 3 in the both sides of brake disc 1, clamp 2 are bolted on brake disc 1
On, braked under the mutual rubbing action of brake pad 3 that brake disc 1 passes through clamp 2 and its both sides, precision resistance 4 is through friction
The length of block 3 and precision resistance 4 and the consistency of thickness of brake pad 3, digital temperature sensor 8 are fixed on clamp 2, the precision
The contact portion of resistance 4 and brake pad 3 wraps up one layer of megohmite insulant.
The control module 9 includes single-chip microcomputer, clock oscillation, reset circuit, A/D change-over circuits；
The control module 9 is arranged in enging cabin, and display 6 is placed on cabin interior；
Wherein described display 6 uses liquid crystal LM016L, and the battery 7 is the list in 5V dry cells, the control module 9
Piece machine model AT80C51, A/D change-over circuit model ADC0809.
When being detected, the brake pad Thickness sensitivity module 10 is measured to its resistance signal of precision resistance 4, and will
Voltage signal passes to control module 9, control module 9 calculate and be converted into after the length of precision resistance 4 to precision resistance 4 it
Between length be compared, given error d alarms are more than in error, the mill of precision resistance 4 is shown on the display 6 afterwards
Damage the wear-thickness of length average, i.e. brake pad 3；Temperature digital signal is transferred to control module 9 by digital temperature sensor 8,
9 pairs of data signals passed over of control module are changed and calculated, and show real time temperature on the display 6, in temperature
LED buzzers 11 send alarm when numerical value more than setting is 125 DEG C.
The conversion process of the length of precision resistance 4 is：RtFor precision resistance, VtTo drop to precision resistance RtOn electricity
Pressure, R0For fixed value resistance, V is to drop to fixed value resistance R0On voltage because fixed value resistance is the partial pressure V+ that connects with precision resistance
Vt=5 (V), the current value flowed through is identical, i.e.,Then
Resistance is obtained by physical equationρ is resistivity, and l is resistance length, and s is the cross-sectional area of resistance, willBring into, then the voltage dropped on precision resistanceResistance length
Because precision resistance 4 is embedded in brake pad 3 and both original depths are consistent, then the thickness D that brake pad 3 weares and teares
It is the length change of resistance, i.e.,Wherein l0For the initial length of precision resistance 4.
Length is relatively that the length between every any two precision resistance 4 is compared between the precision resistance 4,
Just do not alarmed when the absolute value of the length difference of each two precision resistance 4 is both less than given d, once there is the exhausted of one group of difference
It is more than given d to being worth, now triggers LED buzzers 11 and alarm, wherein d=0.20mm.
Embodiment 2：Because voltage change is an analog quantity, and single-chip microcomputer is what is desired is that discrete digital quantity, so
Need the voltage change on precision resistance 4 by analog to digital conversion circuit, analog quantity is converted into digital quantity.So will be accurate electric
Resistance 4 is respectively connected to the IN0-IN7 of A/D change-over circuits, carries out the conversion of analog quantity and digital quantity.The conversion output of A/D change-over circuits
Single-chip microcomputer is connected by bus mode, be then fed into single-chip microcomputer, analysis calculates the thickness relationship of voltage and friction plate on resistance.
Because, without clock, the address latch provided using single-chip microcomputer allows signal (pin ALE) to pass through d type flip flop in A/D change-over circuits
(U6:A) obtained after 2 frequency dividings there is provided giving A/D change-over circuit clock signals, d type flip flopPin and A/D conversion chips (U2)
Clock signal input terminal mouthful CLOCK be connected.Because A/D conversion chips have output tri-state latch, its 8 data outputs are drawn
Pin is directly connected with data/address bus.Address decoder (U5) pin Q0, Q1, Q2 A respectively with A/D conversion chips, B, C phases
Even, D0-D7 accesses data/address bus, single-chip microcomputer selects signal by exporting eight-digit binary number position, and three are converted to by address decoder
Signal is selected in binary position, sends into the A, B, C pins, to gate a path in IN0-IN7 of A/D change-over circuits.Then will
P2.7, when starting A/D change-over circuits, is drawn as chip selection signal end by the write signal end (P3.6) of single-chip microcomputer and single-chip microcomputer P2.7
Pin signal passes through one-level NAND gate (U4：B) the A/D change-over circuit address latch pins (ALE) of control A/D conversion chips and conversion
Start pin (START), because ALE and START connects together, therefore A/D change-over circuits piece is while channel address is latched,
Start and changed.A/D change-over circuit EOC ends are set to 0 automatically simultaneously, represent that conversion is carried out.When reading transformation result,
Pass through one-level NAND gate (U4 with low level read signal RD and P2.7 pins：C after), positive pulse effect A/D change-over circuits are produced
OE (OUTPUT ENABLE) is held, for opening tri-state latch, and the data being converted to are exported to single-chip microcomputer.Work as data conversion
Terminate, A/D change-over circuit EOC put at end 1 automatically, represent conversion end, A/D change-over circuit EOC ends and single-chip microcomputer external interrupt
(P3.3) it is connected, conversion end produces interrupt signal, single-chip microcomputer response.VREF (+) and VREF (-) is as the reference voltage
It is compared for the analog signalses with input, is used as benchmark.
Reset circuit of SCM：To ensure single-chip microcomputer circuit stability reliably working in systems, reset circuit is must can not
A few part, the first function of reset circuit is electrification reset, because single chip circuit is sequential digital circuit, and it needs steady
Fixed clock signal, in power supply electrifying, only as VCC more than 4.75V less than 5.25V and crystal oscillator steady operation
When, reset signal is just removed, and circuit starts normal work.Therefore need to reset in single-chip microcomputer RST and an electricity is connect on input pin
Hold to Vcc ends, under connect a resistance to.
Singlechip clock oscillating circuit：In the system that multiple chips are constituted, in order to which the clock signal between each chip is same
XTAL1, frequently with external clock mode, i.e., is grounded by step, external crystal oscillator and electric capacity composition oscillator access XTAL1 and XTAL2.
Digital temperature sensor：- 55 DEG C of digital temperature sensor measurement range ---+125 DEG C, " one is used by pin (D0)
Serially be transmitted to single-chip microcomputer directly reads temperature sensor data to line bus ", and substantially increases anti-interference.Temperature sensor is adopted
Use externally fed mode.
The corner that display 6 is placed on cabin interior and does not influence driver to realize is fixed, and brake pad 3 is under braking action
Consumption is extremely slow, so driver only needs to have a look at display 6 once in a while with regard to that can control the Expenditure Levels of brake pad 3,
Go to change just when brake pad soon runs out of, control machine module 9 is placed on enging cabin, when control machine module 9 occurs
Opening enging cabin is only needed to during problem just can be debugged or be changed to control machine module 9.
Embodiment 3：Because the length of each precision resistance 4 can only represent neighbouring thickness of changing the time, it can not represent whole
The thickness of brake pad 3, because can cause different local abrasion conditions different the reason for the Rig up error of brake pad 3, every piece is rubbed
Have four precision resistances 3 in cleaning block 3, four one rectangular surfaces of formation of precision resistances 3, specific distribution situation as shown in figure 3, this
Sample can cause final output result most to represent the thickness of whole brake pad 3, and can be according to difference between different precision resistances 4
Absolute value find out the abrasion conditions of different places.Eight 1K fixed value resistance is connected partial pressure with eight 1K precision resistances respectively
5V, 2.5V is respectively accounted for when not being worn, and one end that eight precision resistances then are connect into fixed value resistance is respectively connected to A/D change-over circuits
IN0-IN7, A/D change-over circuits convert voltages into binary digit amount, pass through data/address bus, send into P1 mouthful of single-chip microcomputer, singly
Piece machine is to obtained digital quantity, single-chip microcomputer progress processing formula：Vt=(float) ad_data/256, ad_data changes for A/D
Obtained binary data because resistance is affected by temperature, fixed value resistance and precision resistance 4 all using be affected by temperature compared with
Small metalfilmresistor, resistivity is 250 (Ω * mm).Beginning fixed value resistance is 1000 Ω, before precision resistance 4 is worn
It is 1000 Ω, starting precision resistance 4 length is l0=10 (mm), cross-sectional area is 2.5 (㎜2)。
Voltage V on precision resistance 11=1.25V,
Voltage V on precision resistance 22=1.24V,
Voltage V on precision resistance 33=1.20V,
Voltage V on precision resistance 44=1.28V,
Voltage V on precision resistance 55=1.30V,
Voltage V on precision resistance 66=1.23V,
Voltage V on precision resistance 77=1.28V,
Voltage V on precision resistance 88=1.20V,
Embodiment 4：Each 3 embedding two precision resistances 4 of brake pad, embedding three precision resistances 4 can also be used.As long as each
Block brake pad 3 above embedding precision resistance 4 at 2-4, this interval is all right because to be carried out between each two precision resistance 4 pair
Than, according to the abrasion condition near different resistance come brake pad whether uniform scratch, so every piece of brake pad 3 at least needs two
Precision resistance 4 a, brakes has two pieces of brake pads 3, i.e., at least need four brake pads 3.The voltage signal of precision resistance 4
Only eight are converted the signal on the signal that monolithic function is read, the A/D change-over circuits of use by A/D change-over circuits first
Port, if four precision resistances 4 can be caused on the cumbersome of circuit part, each brake pad 3 just with excessive A/D change-over circuits
The friction condition of whole brake pad 3 can be observed well, so at most selecting every group four, totally eight resistance.
When every group two, altogether during four resistance, two resistance are come in the middle of brake pad side by side, one in front and one in back, in circular arc
The center line of shape.
Voltage V on precision resistance 11=1.25V,
Voltage V on precision resistance 22=1.24V,
Voltage V on precision resistance 33=1.20V,
Voltage V on precision resistance 44=1.28V,
Embodiment 5：When every group three, altogether during six resistance, three resistance are simultaneously come in the middle of brake pad, are rubbed in arc-shaped
The midline position of cleaning block, the curve and the curve of circular arc that three resistance are linked to be is consistent.
Voltage V on precision resistance 11=1.25V,
Voltage V on precision resistance 22=1.24V,
Voltage V on precision resistance 33=1.20V,
Voltage V on precision resistance 44=1.28V,
Voltage V on precision resistance 55=1.30V,
Voltage V on precision resistance 66=1.23V,
Above in conjunction with accompanying drawing to the present invention embodiment be explained in detail, but the present invention be not limited to it is above-mentioned
Embodiment, can also be before present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess
Put that various changes can be made.
Claims (8)
1. it is a kind of can Intelligent Measurement abrasion and real time temperature brake pad, it is characterised in that：Including brake disc (1), clamp
(2), brake pad (3), display (6), battery (7), digital temperature sensor (8), control module (9), brake pad Thickness sensitivity
Module (10), LED buzzers (11), the battery (7) respectively with brake pad Thickness sensitivity module (10) and digital TEMP
Device (8) is connected, then is connected with control module (9), and control module (9) is connected with display (6) and LED buzzers (11) respectively；
The brake pad Thickness sensitivity module (10) includes multiple precision resistances (4), and each precision resistance (4) is fixed with one respectively
Then value resistant series are connected in control module (9), and parallel connection is connected with battery (7) again between precision resistance (4)；
It is described to be respectively fixed with brake pad (3) in brake disc (1) both sides, brake disc (1) by clamp (2) and its two
Braked under the mutually rubbing action of the brake pad (3) of side, precision resistance (4) through brake pad (3) and the length of precision resistance (4) with
The consistency of thickness of brake pad (3), digital temperature sensor (8) is fixed on clamp (2)；
The control module (9) includes single-chip microcomputer, clock oscillation, reset circuit, A/D change-over circuits；
The control module (9) is arranged in enging cabin, and display (6) is placed on cabin interior.
2. it is according to claim 1 can Intelligent Measurement abrasion and real time temperature brake pad, it is characterised in that：The display
Device (6) uses liquid crystal LM016L, and the battery (7) is 5V dry cells.
3. it is according to claim 1 can Intelligent Measurement abrasion and real time temperature brake pad, it is characterised in that：The control
Single-chip microcomputer model AT80C51, A/D change-over circuit model ADC0809 in module (9).
4. it is according to claim 1 can Intelligent Measurement abrasion and real time temperature brake pad, it is characterised in that：The precision
The contact portion of resistance (4) and brake pad (3) wraps up one layer of megohmite insulant.
5. it is according to claim 1 can Intelligent Measurement abrasion and real time temperature brake pad, it is characterised in that：The friction
The quantity of precision resistance (4) is 2-4 on block (3).
6. a kind of method that brake pad described in any one is worn and torn in 1-6 to claim and real time temperature is detected, it is special
Levy and be：The brake pad Thickness sensitivity module (10) measures to its precision resistance (4) resistance signal, and by voltage signal
Pass to control module (9), control module (9) calculate and be converted into after precision resistance (4) thickness to precision resistance (4) it
Between length be compared, given error d alarms are more than in error, precision resistance (4) is shown on display (6) afterwards
Abrasion length average, i.e. brake pad (3) wear-thickness；Temperature digital signal is transferred to control by digital temperature sensor (8)
Molding block (9), control module (9) is changed and calculated to the data signal passed over, and shows real on display (6)
Shi Wendu, when temperature exceedes the numerical value of setting, LED buzzers (11) send alarm.
7. it is according to claim 6 brake pad is worn and torn and real time temperature detection method, it is characterised in that：It is described
The conversion process of precision resistance (4) length is：RtFor precision resistance, VtTo drop to precision resistance RtOn voltage, R0For definite value
Resistance, V is to drop to fixed value resistance R0On voltage because fixed value resistance is the partial pressure V+V that connects with precision resistancet=5 (V), stream
The current value crossed is identical, i.e.,Then
Resistance is obtained by physical equationρ is resistivity, and l is resistance length, and s is the cross-sectional area of resistance, willBring into, then the voltage dropped on precision resistanceResistance length
Because precision resistance (4) is embedded in brake pad (3) and both original depths are consistent, then the thickness of brake pad (3) abrasion
Degree D is the length change of resistance, i.e.,Wherein l0For the initial length of precision resistance 4.
8. it is according to claim 6 brake pad is worn and torn and real time temperature detection method, it is characterised in that：It is described
Length is relatively that the length between every any two precision resistance (4) is compared between precision resistance (4), works as each two
The absolute value of the length difference of precision resistance (4) is not just alarmed when being both less than given d, once there is the absolute value of one group of difference big
In given d, LED buzzers (11) alarm, wherein d=0.20mm are now triggered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710265318.6A CN106989775B (en) | 2017-04-21 | 2017-04-21 | It is a kind of can intelligent measurement abrasion and real time temperature friction block and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710265318.6A CN106989775B (en) | 2017-04-21 | 2017-04-21 | It is a kind of can intelligent measurement abrasion and real time temperature friction block and its detection method |
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| CN106989775A true CN106989775A (en) | 2017-07-28 |
| CN106989775B CN106989775B (en) | 2019-12-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633134A (en) * | 2017-09-19 | 2018-01-26 | 中国核动力研究设计院 | A kind of vibrationproof bar reverses the analysis method to steam generator heat-transfer pipe effect of attrition |
| CN107650889A (en) * | 2017-09-26 | 2018-02-02 | 安徽博耐克摩擦材料有限公司 | Brake block overheat protecting system |
| CN107650903A (en) * | 2017-09-25 | 2018-02-02 | 重庆工业职业技术学院 | A kind of Multifunctional brake alarm control system and control method |
| CN107804309A (en) * | 2017-10-26 | 2018-03-16 | 西安正昌电子股份有限公司 | A kind of commercial vehicle brake function monitoring system |
| CN107975555A (en) * | 2017-12-15 | 2018-05-01 | 中国第汽车股份有限公司 | A kind of brake friction plate abrasion degree detection device |
| CN112461109A (en) * | 2020-11-10 | 2021-03-09 | 中国北方车辆研究所 | On-line measuring device for abrasion loss of gear shifting sliding block of gear shifting control mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20230383805A1 (en) * | 2021-08-06 | 2023-11-30 | Geville Gee | Brake warning system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069353Y (en) * | 2007-08-10 | 2008-06-04 | 北京工业大学 | A braking friction sheet thickness sensor for resistance car |
| CN202579764U (en) * | 2011-12-30 | 2012-12-05 | 江苏安捷汽车配件有限公司 | Brake disc thickness alarm with three thermistors |
| CN103210232A (en) * | 2010-09-16 | 2013-07-17 | 克诺尔商用车制动系统有限公司 | Wear distance sensor for a brake pad of a friction brake |
| US20130192933A1 (en) * | 2012-02-01 | 2013-08-01 | GM Global Technology Operations LLC | Friction brake with a resistive sensor |
| CN204041799U (en) * | 2014-08-12 | 2014-12-24 | 山东泰丰制动系统科技股份有限公司 | A kind of automobile brake friction plate thickness automatic Testing Alarm System |
| CN207374372U (en) * | 2017-09-07 | 2018-05-18 | 罗伯特·博世有限公司 | Vehicle and its brake(-holder) block wear sensor |
| CN207816175U (en) * | 2017-12-19 | 2018-09-04 | 武汉元丰汽车零部件有限公司 | A kind of automotive friction block thickness detection apparatus |
-
2017
- 2017-04-21 CN CN201710265318.6A patent/CN106989775B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069353Y (en) * | 2007-08-10 | 2008-06-04 | 北京工业大学 | A braking friction sheet thickness sensor for resistance car |
| CN103210232A (en) * | 2010-09-16 | 2013-07-17 | 克诺尔商用车制动系统有限公司 | Wear distance sensor for a brake pad of a friction brake |
| CN202579764U (en) * | 2011-12-30 | 2012-12-05 | 江苏安捷汽车配件有限公司 | Brake disc thickness alarm with three thermistors |
| US20130192933A1 (en) * | 2012-02-01 | 2013-08-01 | GM Global Technology Operations LLC | Friction brake with a resistive sensor |
| CN204041799U (en) * | 2014-08-12 | 2014-12-24 | 山东泰丰制动系统科技股份有限公司 | A kind of automobile brake friction plate thickness automatic Testing Alarm System |
| CN207374372U (en) * | 2017-09-07 | 2018-05-18 | 罗伯特·博世有限公司 | Vehicle and its brake(-holder) block wear sensor |
| CN207816175U (en) * | 2017-12-19 | 2018-09-04 | 武汉元丰汽车零部件有限公司 | A kind of automotive friction block thickness detection apparatus |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633134A (en) * | 2017-09-19 | 2018-01-26 | 中国核动力研究设计院 | A kind of vibrationproof bar reverses the analysis method to steam generator heat-transfer pipe effect of attrition |
| CN107633134B (en) * | 2017-09-19 | 2021-04-13 | 中国核动力研究设计院 | Method for analyzing influence of torsion of vibration-proof strip on abrasion of heat transfer pipe of steam generator |
| CN107650903A (en) * | 2017-09-25 | 2018-02-02 | 重庆工业职业技术学院 | A kind of Multifunctional brake alarm control system and control method |
| CN107650889A (en) * | 2017-09-26 | 2018-02-02 | 安徽博耐克摩擦材料有限公司 | Brake block overheat protecting system |
| CN107804309A (en) * | 2017-10-26 | 2018-03-16 | 西安正昌电子股份有限公司 | A kind of commercial vehicle brake function monitoring system |
| CN107975555A (en) * | 2017-12-15 | 2018-05-01 | 中国第汽车股份有限公司 | A kind of brake friction plate abrasion degree detection device |
| CN112461109A (en) * | 2020-11-10 | 2021-03-09 | 中国北方车辆研究所 | On-line measuring device for abrasion loss of gear shifting sliding block of gear shifting control mechanism |
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