CN106556336A - A kind of brake block and thickness detecting method - Google Patents
A kind of brake block and thickness detecting method Download PDFInfo
- Publication number
- CN106556336A CN106556336A CN201611093594.0A CN201611093594A CN106556336A CN 106556336 A CN106556336 A CN 106556336A CN 201611093594 A CN201611093594 A CN 201611093594A CN 106556336 A CN106556336 A CN 106556336A
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- China
- Prior art keywords
- brake block
- brake
- thickness
- lead
- electrode layer
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
Abstract
A kind of brake block provided in an embodiment of the present invention and thickness detecting method, belong to automobile brake system field.The brake block includes backboard, thermal insulation layer, brake pad and lead-out wire, the backboard is connected by the thermal insulation layer with the brake pad, open up fluted on the brake pad, first electrode layer is formed after the metallized process of the first side wall of the groove, the second electrode lay is formed after second sidewall metalized described in of the groove, the lead-out wire includes the first lead and the second lead, first lead is electrically connected with the first electrode layer, and second lead is electrically connected with the second electrode lay.The brake block is by the capacitance between Real-time Collection first electrode layer and the second electrode lay, so as to the change for passing through capacitance obtains the thickness change of brake block, and then obtain the state of wear of brake block by the thickness change of brake block in real time, so that human pilot can carry out the maintenance and replacing of brake block in advance, the potential safety hazard in driving is reduced.
Description
Technical field
The present invention relates to automobile brake system field, in particular to a kind of brake block and thickness detecting method.
Background technology
In brake system of car, brake block is the part of most critical, plays conclusive work to the quality of braking effect
With the life security of property safety and driver and crew of the state relation of, brake block to automobile etc., thickness is the important of brake block
Parameter, is related to the effectiveness of brake, therefore particularly important to the detection of brake block thickness.But it is existing to brake block thickness
Detection is often to travel certain milimeter number (such as 5000 kilometers) to be checked under the conditions of normal vehicle operation, but as wheel hub is designed
Reason, for Some vehicles naked eyes cannot directly see the thickness of brake block clearly, needs detaching tyre just carry out, every time dismounting inspection
The work time cost looked into will necessarily increase the cost with car, but effectively inspection accurate in real time but cannot be carried out to the thickness of brake block
Survey.
The content of the invention
It is an object of the invention to provide a kind of brake block and thickness detecting method, which can improve the problems referred to above.
What embodiments of the invention were realized in：
In a first aspect, the present invention provides a kind of brake block, which includes：Backboard, thermal insulation layer, brake pad and lead-out wire, institute
State backboard to be connected by the thermal insulation layer with the brake pad, on the brake pad, open up fluted, the first side of the groove
First electrode layer is formed after the metallized process of wall, second is formed after second sidewall metalized described in of the groove electric
Pole layer, the lead-out wire include the first lead and the second lead, and first lead is electrically connected with the first electrode layer, institute
State the second lead to be electrically connected with the second electrode lay.
Second aspect, the present invention provide a kind of thickness detecting method, methods described include obtaining the first electrode layer and
Capacitance between the second electrode lay；The thickness value of the brake block is obtained based on the capacitance；When the thickness value
During less than pre-set threshold value, early warning information is sent.
Further, methods described also includes：The facing area of first electrode layer and the second electrode lay is obtained, it is described just right
Area is reduced with the friction of brake disc with the brake pad；Based on capacitance calculation mode, capacitance is obtained.
Further, methods described also includes：The thickness value meets D=d1+d2, wherein, D represents the brake block
Thickness value, d1Represent the fixed thickness value of the fixture of the brake block, d2Represent the thickness value of the brake pad, described first
The thickness value of electrode layer or the second electrode lay is equal to the thickness value of the brake pad.
Further, methods described also includes：The fixed thickness value is equal to the thickness value and thermal insulation layer of the backboard
The summation of thickness value.
A kind of brake block and thickness detecting method that the invention described above is provided, the brake block pass through Real-time Collection first electrode
Capacitance between layer and the second electrode lay, so as to obtain the facing area of first electrode layer and the second electrode lay, and then obtains
The thickness value of first electrode layer and the second electrode lay, and then the thickness of brake pad is obtained, and then the thickness of brake block is obtained, and then
The state of wear of brake block is obtained in real time by the thickness change of brake block, so that human pilot can carry out brake block in advance
Maintenance and replacing, reduce the potential safety hazard in driving.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of structural representation of brake block that first embodiment of the invention is provided；
Fig. 2 is the partial enlargement structural representation in a kind of brake block shown in Fig. 1 at I；
Fig. 3 is another kind of brake block structure schematic diagram that first embodiment of the invention is provided；
Fig. 4 is a kind of the first viewing angle constructions schematic diagram of the brake block shown in Fig. 1；
A kind of flow chart of thickness detecting method that Fig. 5 is provided for second embodiment of the invention.
Icon：100- brake blocks；110- backboards；120- brake pads；130- grooves；140- lead-out wires；150- increases
Hold part；160- processors；131- the first side walls；132- second sidewalls；131A- first electrode layers；132A- second electrodes
Layer；The first leads of 141-；The second leads of 142-；170- thermal insulation layers.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Present invention enforcement generally described and illustrated in accompanying drawing herein
The component of example can be arranged and be designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment obtained under the premise of creative work is not made by technical staff, belongs to the model of present invention protection
Enclose.
The existing switching value that can only be given when a brake block may wear to limiting case, it is impossible to real-time detection brake block
Abrasion condition, can not be predicted the abrasion condition of brake block to driver in advance, and this is for vehicle long-distance running or long descending
There is larger potential safety hazard during traveling.Some are detected to brake block thickness using current vortex sensor, but current vortex is passed
Sensor is sensitive to metal material, but poor to the sensitivity of nonmetallic materials, therefore the brake block to being made up of nonmetallic materials
The more difficult detection of thickness；Simultaneously because current vortex sensor has higher operating frequency, therefore there is electromagnetic radiation in which, may
Interference signal can be produced to the electronic system of vehicle.Some carry out the measurement of multiple thickness using electric resistance sensor to brake block,
But the precision to improve thickness measure then needs to increase more resistance, and its structure seems complex；Simultaneously in brake block
The measurement carried out when contacting with brake disc, due to the contact resistance that the brake block contact condition different from brake disc is produced it is different,
With larger measurement error, therefore its certainty of measurement is difficult to improve.
First embodiment
Fig. 1 to Fig. 3 is refer to, the present embodiment provides a kind of brake block 100, and which includes backboard 110, brake pad 120, groove
130th, lead-out wire 140, increase-volume part 150, processor 160 and thermal insulation layer 170.
Fig. 1 is refer to, in the present embodiment, the backboard 110 passes through thermal insulation layer 170 (refer to Fig. 3) and the friction
Block 120 connects.
In the present embodiment, the backboard 110 is used to connect external equipment, such as by the modes such as nut or welding and car
Fixation, the vehicle can be car, electric motor car or motorcycle etc..The material of the backboard 110 can be rustless steel,
Can be titanium alloy, in the present embodiment, be not especially limited.
In the present embodiment, the shape of the backboard 110 can be rectangle, or circle, can also be other shapes
Shape, in the present embodiment, is not especially limited.
In the present embodiment, brake pad 120 is connected with the backboard 110 by thermal insulation layer 170 (refer to Fig. 3).It is described
One end of thermal insulation layer 170 (refer to Fig. 3) is connected with the brake pad 120, the thermal insulation layer 170 (refer to Fig. 3) it is another
End is connected with the backboard 110.The material of the brake pad 120 can be that insulating ceramics friction material, or asbestos are fine
Dimension friction material, can also be carbon fiber friction material, and in the present embodiment, the material of the brake pad 120 preferably insulate
Ceramic frication material.Wherein, the insulating ceramics friction material refers to the ceramic material with electrical insulating property.When the brake pad
120 with outside brake disc brake when can form friction, so as to the thickness of brake pad 120 can be caused gradually to subtract with rubbing
It is little.
In the present embodiment, the groove 130 is opened on the brake pad 120.The groove 130 includes the first side wall
131 and second sidewall 132.As shown in Fig. 2 forming first electrode after the 131 metallized process of the first side wall of the groove 130
Layer 131A, forms the second electrode lay 132A after 132 metalized described in of second sidewall of the groove 130.The metal
Change processes metal on the plated surface referred to the first side wall 131 with the second sidewall 132, and the metal can be nickel,
Can also be copper, in the present embodiment, be not especially limited.
In the present embodiment, first electrode layer 131A constitutes the two of capacitance sensor with the second electrode lay 132A
Individual battery lead plate, the capacitance sensor are used to gather the electric capacity between first electrode layer 131A and the second electrode lay 132A.
In the present embodiment, the quantity of the groove 130 is one or more.The groove 130 be shaped as rectangle or
It is circular.As shown in figure 3, groove 130 is generally circular in shape.
Referring once again to Fig. 1, in the present embodiment, one end of the first side wall 131 (please be joined with the thermal insulation layer 170
According to Fig. 4) connect, the other end of the first side wall 131 is flushed with the horizontal plane of the brake pad 120.I.e. described first electrode
One end of layer 131A is connected with the thermal insulation layer 170 (refer to Fig. 4), and the other end of first electrode layer 131A is rubbed with described
The horizontal plane of cleaning block 120 is flushed.I.e. described first electrode layer 131A is equal to institute with the thickness value of the second electrode lay 132A
State the thickness value of brake pad 120.
In the present embodiment, first electrode layer 131A can be with brake pad 120 with the thickness of the second electrode lay 132A
The friction formed in brake with outside brake disc is gradually reduced, i.e., first electrode layer 131A is with the second electrode lay 132A's
One end is flushed with the horizontal plane of brake pad 120, when brake pad 120 is rubbed with brake disc, first electrode layer 131A and institute
Stating the second electrode lay 132A also can be with being rubbed, therefore the thickness of first electrode layer 131A and the second electrode lay 132A
Degree can be gradually reduced with the friction that brake pad 120 is formed in brake with outside brake disc.So that the first electrode
The facing area of the layer 131A and the second electrode lay 132A reduces, so as to change the real-time capacitance that groove 130 gets, i.e.,
The capacitance of Real-time Collection can be become with the change of the facing area of the second electrode lay 132A with first electrode layer 131A
Change.
In the embodiment of the present invention, the computing formula of capacitance is：C=ε * S/ (4* π * k*d), wherein, C is electric capacity
Value, ε are a constants, and facing areas of the S for capacitive side wall, i.e. first electrode layer 131A are with the second electrode lay 132A just
The distance between to area, d is first electrode layer 131A with the second electrode lay 132A, k is electrostatic force constant.In this enforcement
In example, k, d and ε are constant, therefore when facing area S changes, electric capacity C can be with change.For example, current brake pad
120 thickness value is h0, and first electrode layer 131A is h0 with the thickness value of the second electrode lay 132A, electric capacity C1 now
=ε * h0*a/ (4* π * k*d), a are the width value of first electrode layer 131A and the second electrode lay 132A.Work as friction
, after a certain time because the thickness that friction is damaged the brake pad 120 is changed into h1, first electrode layer 131A is electric with described second for block 120
Pole layer 132A also can wear and tear with the abrasion of brake pad 120, first electrode layer 131A now and the second electrode lay
The thickness of 132A is h1, electric capacity C2=ε * h1*a/ (4* π * k*d) now, due to first electrode layer 131A and described the
The width of two electrode layer 132A will not change, so the value of a is a definite value.So the change of capacitance is with first
Electrode layer 131A changed with the change of the thickness of the second electrode lay 132A, so as to the thickness of the brake block 100
Change can realize measurement in real time by the change of electric capacity.
In the present embodiment, the lead-out wire 140 includes the first lead 141 and the second lead 142.First lead
141 are electrically connected with first electrode layer 131A, and second lead 142 is electrically connected with the second electrode lay 132A.
In the present embodiment, the lead-out wire 140 is for by first electrode layer 131A and the second electrode lay
The capacitance output gathered between 132A is to external equipment.Wherein, the external equipment can be mobile terminal, or language
Sound playback equipment, can also be outside capacitive detection circuit.
In the present embodiment, first lead 141 realizes electricity with first electrode layer 131A by way of welding
Gas connects, and second lead 142 realizes electrical connection by way of welding with the second electrode lay 132A.
In the present embodiment, first lead 141 and the first electrode layer 131A junction be near backboard 110, i.e.,
First lead 141 is electrically connected near one end of backboard 110 with first electrode layer 131A.In the same manner, described second draws
Line 142 is with the second electrode lay 132A junctions near backboard 110, i.e., described second lead 142 and the second electrode lay
132A is electrically connected near one end of backboard 110.So that when brake pad 120 is in wear process, will not be because of brake pad 120
Abrasion cause the first lead 141 and the second lead 142 to be worn, also will not be because of 142 quilt of the first lead 141 and the second lead
Abrasion and cause the brake block 100 electric capacity export cannot normal work.So as to increased the normal work longevity of the brake block 100
Life.
In the present embodiment, first lead 141 and second lead 142 can be data wire, or letter
Number line.
In the present embodiment, increase-volume part 150 is additionally provided with the groove 130.One end of the increase-volume part 150 and described
One electrode layer 131A connects, and the other end of the increase-volume part 150 is connected with the second electrode lay 132A.I.e. described increase-volume part
150 are located between first electrode layer 131A and the second electrode lay 132A.
In the present embodiment, the material of the increase-volume part 150 is insulant.The increase-volume part 150 is used to increase electric capacity
Capacity, that is, increase the capacity of the electric capacity between first electrode layer 131A and the second electrode lay 132A, i.e., at other
In the case that condition is constant so that the value of ε becomes big, so as to improve the accuracy rate of the detection of the thickness to brake block 100.
In the present embodiment, the increase-volume part 150 is shaped as rectangle or cylinder.
In the present embodiment, the thickness of the increase-volume part 150 is much smaller than first electrode layer 131A or described second electric
The thickness of pole layer 132A, the i.e. thickness of the increase-volume part 150 are less than thickness value during 120 normal work of brake pad.For example,
When the original depth of brake pad 120 is D1, the thickness after abrasion is D2, i.e., now the thickness of the brake pad 120 is D2, works as friction
When the thickness of block 120 is D2, the brake pad 120 reaches the marginal value of normal work thickness.The thickness of the increase-volume part 150 is less than
The marginal value.I.e. the thickness of increase-volume part 150 keeps constant in 120 wear process of brake pad.Wherein, the normal work is
When referring to that brake pad 120 is rubbed with brake disc, the brake block 100 can play a part of brake.
Wherein, the S referred in the case where other conditions are constant in capacitance equation C=ε * S/ (4* π * k*d),
K and d are constant, i.e., described first electrode layer 131A is constant with the facing area of the second electrode lay 132A, the first electrode
The layer 131A and the second electrode lay 132A is constant apart from d and electrostatic force constant k is constant.
In the present embodiment, the processor 160 is all connected with the first lead 141 and the second lead 142.The processor
160 are used to process the capacitance of first lead 141 and second lead 142 transmission, and the processor 160 is by described
Capacitance based on capacitance calculation formula C=ε * S/ (4* π * k*d) in the present embodiment, so as to obtain the thickness of brake block 100
Angle value.The processor 160 is additionally operable to be connected with external equipment, and the thickness value after process is sent to external equipment, wherein, institute
It can be mobile terminal, or voice playing equipment to state external equipment, can also be the outside detection circuit of groove 130.
In the present embodiment, the processor 160 is single-chip microcomputer, DSP (Digital Signal Processing, numeral
Signal processing), ARM (Advanced RISC Machine, microprocessor) or FPGA (Field-Programmable Gate
Array, field programmable gate array) etc. other there is the chip of data processing function.In the present embodiment, do not make concrete
Limit.
Fig. 4 is refer to, the brake block 100 also includes thermal insulation layer 170.The thermal insulation layer 170 be used to realizing backboard 110 with
Electric insulation between brake pad 120.
In the present embodiment, one end of the thermal insulation layer 170 is connected with backboard 110, the other end of the thermal insulation layer 170 with
The brake pad 120 connects.
Wherein, the shape of the thermal insulation layer 170 can be rectangle can also be circular.The material of the thermal insulation layer 170 can
Being ceramic fibre material, or nanometer micropore heat-barrier material.
In this embodiment, it is preferred that, the thermal insulation layer 170 is bonded together by bonding agent with the backboard 110.
In the present embodiment, the thermal insulation layer 170 can also be bonded together by bonding agent with the brake pad 120.
Wherein, bonding agent is usually and is made up of plastics or plastic hybrid, and bonding agent can be divided into physical hardening bonding agent
With chemicosolidifying bonding agent.
In this embodiment, it is preferred that, the surface area of the thermal insulation layer 170 is equal to or more than the surface area of brake pad 120,
When the thermal insulation layer 170 surface area be equal to or more than brake pad 120 surface area when, can preferably by backboard 110 with rub
Cleaning block 120 separates, and then plays preferable insulating effect.
Wherein, the surface area of the thermal insulation layer 170 refers to the area in the face that thermal insulation layer 170 is contacted with brake pad 120.Together
Reason, the surface area of the brake pad 120 also refer to the area in the face that brake pad 120 is contacted with thermal insulation layer 170.
The operation principle of brake block 100 is：When the brake pad 120 is rubbed with brake disc, brake pad 120 can be with
The increasing for number of times of friction and gradually wear out, the abrasion of brake pad 120 can cause first electrode layer 131A with described the
Two electrode layer 132A are simultaneously with abrasion.It is after first electrode layer 131A is worn and torn with the second electrode lay 132A, described
First electrode layer 131A can reduce with the thickness of the second electrode lay 132A, so that first electrode layer 131A and institute
The facing area for stating the second electrode lay 132A reduces so that when electric capacity is detected, capacitance can change, and then by changing
Capacitance obtain the thickness change of the brake block 100, so as to realize the real-time detection of the thickness to the brake block 100.Pass through
The thickness of the brake block 100 that real-time detection is arrived, enables to maintenance and replacing that human pilot carries out brake block 100 in advance, from
And the potential safety hazard in driving is reduced, and then human pilot is gone on a journey safely.
Second embodiment
Fig. 5 is referred to, is a kind of flow chart of thickness detecting method that second embodiment of the invention is provided.Methods described should
For the brake block described in first embodiment.Idiographic flow shown in Fig. 5 will be described in detail below.
Step S401, obtains the capacitance between the first electrode layer and the second electrode lay.
Wherein, the facing area of the first electrode layer and the second electrode lay is obtained, the facing area is with institute
State brake pad and the friction of brake disc and reduce, i.e., one end and the brake pad of described first electrode layer and the second electrode lay
Horizontal plane is flushed, and when brake pad and brake disc are rubbed, the first electrode layer and the second electrode lay also can be with
Rubbed, therefore the first electrode layer can braked with outside brake disc with brake pad with the thickness of the second electrode lay
When the friction that formed be gradually reduced.Based on capacitance calculation mode, capacitance is obtained.Specifically, by obtaining the first electrode
Layer and the facing area of the second electrode lay, obtain capacitance based on capacitance calculation formula.
Step S402, obtains the thickness value of the brake block based on the capacitance.
Wherein, the thickness value meets D=d1+d2, wherein, D represents the thickness value of the brake block, d1Stop described in representing
The fixed thickness value of the fixture of car piece, d2The thickness value of the brake pad is represented, the thickness value of the brake pad is equal to described
The thickness value of first electrode layer and the second electrode lay.The fixed thickness value is equal to the thickness value and thermal insulation layer of the backboard
Thickness value summation.
In the present embodiment, by obtaining initial capacitance value, the current capacitance for obtaining is compared with initial capacitance value
Compared with obtaining the difference of capacitance present value and initial capacitance value, obtain the first electrode layer and described second by the difference
The facing area of electrode layer, obtains the thickness of the first electrode layer and the second electrode lay by facing area, so as to obtain
Take the thickness value of brake pad, and then obtain the thickness value of the brake block, realize the thickness of the real-time detection brake block so that drive
Personnel can carry out the maintenance and replacing of brake block in advance, reduce the potential safety hazard in driving.
For example, when initial, the capacitance of brake block is C1, and capacitance present value is C2, according to capacitance equation C=ε * S/ (4*
π * k*d) initial right opposite product value S1=C1* (4* π * k*d)/ε, current right opposite product value S2=C2* can be obtained
(4* π * k*d)/ε, during product reduces on the right side, other are constant, i.e., described first electrode layer and described second
The facing area of electrode layer is constant, the first electrode layer and the second electrode lay are apart from d is constant and electrostatic force constant k
It is constant.By the situation that the first electrode layer is constant with the width of the second electrode lay, it is possible to obtain presently described first
The thickness value of electrode layer and the second electrode lay, for example, the first electrode layer with the width value of the second electrode lay is
A, then the current thickness h2=S2/a=C2/a of the first electrode layer and the second electrode lay, the first electrode layer and institute
The original depth h1=S1/a=C1/a of the second electrode lay is stated, the current thickness is added with the fixed thickness of brake block and is obtained
Obtain the current thickness of brake block and the thickness of reduction.For example, the fixed thickness of brake block is 10 millimeters, then fixed thickness includes
The thickness of backboard and the thickness of thermal insulation layer, due to backboard with thermal insulation layer in brake process, not with brake disc friction, so as to will not
Change, therefore backboard and the thickness of thermal insulation layer are fixed.
For example, currently there is a brake block, the thickness value of the backboard of the brake block is d0, and the thickness value of thermal insulation layer is d1, is rubbed
The thickness value of cleaning block is d2, and the first electrode layer is b, the first electrode layer and institute with the width value of the second electrode lay
It is d2, initial capacitance value C1=ε * d2*b/ (4* π * to state the thickness of the thickness equal to brake pad of the second electrode lay, i.e. thickness
K*d), when the capacitance after brake pad abrasion is C2, C2=S2* ε/(4* π * k* are understood according to capacitance calculation formula
D), it is possible to obtain the corresponding area value S2=C2* of C2 (4* π * k*d)/ε, thickness now can be obtained according to area formula
Angle value H=S2/b=C2* (4* π * k*d)/(ε * b), then the thickness value D=d0+d1+H of brake block now.
Step S403, when the thickness value is less than pre-set threshold value, sends early warning information.
Wherein, pre-set threshold value refer to the minimum thickness value of brake block, i.e. brake block just failure or cannot normal work when
Thickness be minimum thickness value.
The early warning information refers to the information of prompting user or driver, so as to driver or user can be known in time stop
The thickness of car piece, and safeguard procedures are made according to early warning information.
As the first embodiment, by Real-time Collection capacitance so as to the thickness value of Real-time Collection brake block, and will
The thickness value for collecting feeds back to driver by the form of note.Specifically, when capacitance sensor Real-time Collection electric capacity, lead to
The electric capacity for crossing collection obtains the thickness of brake block, the thickness is sent to the cell-phone number by the cell-phone number of advance binding and is gathered around
Some users.
Used as second embodiment, the thickness of the brake block got when the electric capacity collected by capacitance sensor is little
In or when being equal to pre-set threshold value, early warning information is sent to the user possessed by the cell-phone number by the cell-phone number of advance binding, is carried
Show that the user changes brake block in time or brake block is overhauled such that it is able to reduce the user drive when it is unexpected because
Element.
Used as the third embodiment, the thickness of the brake block got when the electric capacity collected by capacitance sensor is little
In or be equal to pre-set threshold value when, Buzzing type warning is carried out by alarm, i.e., by loudspeaker play warning information, so as to point out to drive
The person of sailing is overhauled in time or is changed to brake block.
In sum, the present invention is provided a kind of brake block and thickness detecting method, the brake block pass through Real-time Collection institute
The capacitance between first electrode layer and the second electrode lay is stated, so that the first electrode layer is obtained with the second electrode
The facing area of layer, and then the thickness value of the first electrode layer and the second electrode lay is obtained, and then obtain brake pad
Thickness, and then the thickness of brake block is obtained, and then obtain the state of wear of brake block by the thickness change of brake block in real time, with
Enable human pilot to carry out the maintenance and replacing of brake block in advance, reduce the potential safety hazard in driving.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of brake block, it is characterised in that include：Backboard, thermal insulation layer, brake pad and lead-out wire, the backboard with it is described
Brake pad is connected by the thermal insulation layer, opens up fluted on the brake pad, the metallized place of the first side wall of the groove
First electrode layer is formed after reason, after second sidewall metalized described in of the groove, the second electrode lay is formed, it is described to draw
Outlet includes the first lead and the second lead, and first lead is electrically connected with the first electrode layer, second lead
It is electrically connected with the second electrode lay.
2. brake block according to claim 1, it is characterised in that increase-volume part, the increase-volume part are additionally provided with the groove
One end be connected with the first electrode layer, the other end of the increase-volume part is connected with the second electrode lay.
3. brake block according to claim 1, it is characterised in that the quantity of the groove is one or more.
4. brake block according to claim 1, it is characterised in that the groove is shaped as rectangle or cylinder.
5. brake block according to claim 1, it is characterised in that the backboard is with one end of the thermal insulation layer by bonding
Agent bonding, the other end of the thermal insulation layer are bonding by bonding agent with the brake pad.
6. brake block according to claim 1, it is characterised in that also including processor, first lead and described
Two leads are electrically connected with the processor.
7. a kind of thickness detecting method, methods described are applied to the brake block as described in claim 1 to 6 any one, and which is special
Levy and be, methods described includes：
Obtain the capacitance between the first electrode layer and the second electrode lay；
The thickness value of the brake block is obtained based on the capacitance；
When the thickness value is less than pre-set threshold value, early warning information is sent.
8. method according to claim 7, it is characterised in that the acquisition first electrode layer and the second electrode
Layer between capacitance the step of include：
The facing area of first electrode layer and the second electrode lay is obtained, the facing area is with the brake pad and brake disc
Rub and reduce；
Based on capacitance calculation mode, capacitance is obtained.
9. method according to claim 8, it is characterised in that the thickness value meets D=d1+d2, wherein, D represents described
The thickness value of brake block, d1Represent the fixed thickness value of the fixture of the brake block, d2The thickness value of the brake pad is represented,
The thickness value of the first electrode layer or the second electrode lay is equal to the thickness value of the brake pad.
10. method according to claim 9, it is characterised in that the fixed thickness value is equal to the thickness value of the backboard
With the summation of the thickness value of thermal insulation layer.
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| CN107515121A (en) * | 2017-08-17 | 2017-12-26 | 上海擎感智能科技有限公司 | Long-distance self checking method and device, computer-readable recording medium, terminal |
| CN107747901A (en) * | 2017-12-06 | 2018-03-02 | 中国石油大学(华东) | A kind of new real-time continuous detecting system of brake block thickness |
| CN108825690A (en) * | 2018-06-28 | 2018-11-16 | 昆山睿力得软件技术有限公司 | A kind of intelligent measurement and maintenance system of automotive brake pads |
| CN109029233A (en) * | 2018-08-31 | 2018-12-18 | 中国联合网络通信集团有限公司 | Brake block thickness detecting system and vehicle |
| CN109489605A (en) * | 2018-10-25 | 2019-03-19 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Parallel movable electrode method for measuring thickness, apparatus and system |
| CN110514158A (en) * | 2019-09-12 | 2019-11-29 | 吉林省瑞普测控技术有限公司 | A kind of automobile brake simulator stand and its method for detecting DIV numerical value |
| CN110814960A (en) * | 2019-12-02 | 2020-02-21 | 湖北文理学院 | Automatic production line for grinding outer arc of non-equal-thickness drum brake pad and control method thereof |
| CN111497528A (en) * | 2019-01-04 | 2020-08-07 | 益力半导体股份有限公司 | Variable-capacity tire thickness sensor |
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| CN107515121A (en) * | 2017-08-17 | 2017-12-26 | 上海擎感智能科技有限公司 | Long-distance self checking method and device, computer-readable recording medium, terminal |
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| CN109489605A (en) * | 2018-10-25 | 2019-03-19 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Parallel movable electrode method for measuring thickness, apparatus and system |
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| CN111497528A (en) * | 2019-01-04 | 2020-08-07 | 益力半导体股份有限公司 | Variable-capacity tire thickness sensor |
| CN110514158A (en) * | 2019-09-12 | 2019-11-29 | 吉林省瑞普测控技术有限公司 | A kind of automobile brake simulator stand and its method for detecting DIV numerical value |
| CN110814960A (en) * | 2019-12-02 | 2020-02-21 | 湖北文理学院 | Automatic production line for grinding outer arc of non-equal-thickness drum brake pad and control method thereof |
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