CN1206121C - Warning system for worn brake block and abnormal tyre pressure - Google Patents
Warning system for worn brake block and abnormal tyre pressure Download PDFInfo
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- CN1206121C CN1206121C CN 01137842 CN01137842A CN1206121C CN 1206121 C CN1206121 C CN 1206121C CN 01137842 CN01137842 CN 01137842 CN 01137842 A CN01137842 A CN 01137842A CN 1206121 C CN1206121 C CN 1206121C
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Abstract
The present invention relates to a warning system for the abrasion loss of a brake liner and abnormal tyre pressure. The present invention has the structure that a guiding and connecting part is hidden in the minimal allowable thickness of a brake liner, when the liner is abraded to the minimal allowable thickness, and the guiding and connecting part is exposed, a double detection circuit which is connected with the guiding and connecting part can generate a short circuit or an open circuit in real time and generate a short circuit signal or an open circuit signal. A tyre pressure detection device detects tyre pressure in a wireless mutual-inductance resonance mode and generates a sensing signal. After the signal is transferred to a signal processing unit to be judged, the signal processing unit displays a judgement result of the condition of the abrasion loss of the liner and the tyre pressure on a display unit.
Description
[technical field]
The present invention relates to a kind of worn brake block and abnormal tyre pressure caution system, particularly relate to worn brake block and abnormal tyre pressure caution system that a kind of worn brake block double check and abnormal tyre pressure detect caution automatically.
[background technology]
Consult shown in Figure 1, it is a kind of in the past worn brake block alarming device, it has an annunciator 74 that is installed on vehicle wheel body brake holder 76, brake holder 76 also sets firmly one deck brake liner 78, and on liner 78, offer a groove 80, extend a channel 82 from this groove 80 towards holder 76, confession one body of rod 84 runs through therebetween and opens the open side that trouble terminal 86 is resisted against channel 82 with it.The body of rod 84 and connect one be located in can produce alert news in the enclosing cover 90 blow a whistle 88, these 88 outer ends of blowing a whistle are then covered by the top cover 92 that a frangible material is made, blow a whistle 88 and brake liner 78 between and be equiped with a compression spring 94, and this is blown a whistle and comprises a pair of groove 96,98 that supplies barrier film 100 to wear, its each 102,104 of delivery port in upper end is covered by top cover 92, and air promptly is delivered to groove 96,98 through the channel 108 that air chamber 106 reaches with filter 110.
When brake liner 78 wears away the minimal security thickness place that dotted line 96 indicates to Fig. 1 because of repeated use, cooresponding brake disc or brake drum are with the end 86 of the rapid worn out destruction body of rod 84 and release the body 84 of starting, spring 94 is pushed blow a whistle 88 to penetrate frangible top cover 92 and be exposed to the external world, and then make air borrow the rotation of wheel body to pour into air chamber 106 and activate to blow a whistle and 88 send the caution sound.
But not only assembly is various for above-mentioned worn brake block alarming device in the past, complex structure and manufacturing cost are also higher relatively, and it also extremely is difficult for being installed in existing brake system.Moreover its internal mechanical part after the corrosion oxidation, may influence its Operational Figure Of Merit in long-term use, and sends accurate alert news when failing in real time in worn brake block to minimum thickness.
[summary of the invention]
The object of the present invention is to provide a kind of worn brake block and abnormal tyre pressure caution system with double check and caution automatically.
Moreover, another object of the present invention is to the worn brake block and the abnormal tyre pressure caution system that a kind of simple structure are provided and can improve detection accuracy, promptness and safety.
A kind of worn brake block of the present invention and abnormal tyre pressure caution system, be to be applied on the wheel body and brake system thereof of carrier, this brake system comprise one can with this wheel body rotate and conductive first brake member and at least one can towards this first brake member near or away from second brake member, this second brake member also is provided with a liner, be used to borrow when this brake system activates this liner and this first brake member frictional engagement and produce the slowing-down brake effect, it is characterized in that this caution system includes: a tire pressure detecting device is to detect the also corresponding tire pressure that detected of tire pressure with wireless mutual inductance resonance mode to produce an induced signal; One signal processing unit is in order to receiving and to judge short-circuit signal and open circuit signaling from above-mentioned double check circuit respectively, and the induced signal of this tire pressure detecting device, and sends an alarm signal according to this; And a display unit, be to be located to be easy to watch the position on this carrier and to be connected, so that the judgment result displays of this signal processing unit is come out with above-mentioned signal processing unit; It is characterized in that, described caution system further comprises: a lead piece, be to be embedded in the interior minimum of this liner to allow the thickness place, described lead piece comprises a short circuit conductive part and an open circuit conductive part, and this short circuit conductive part is that the minimum that is embedded in this liner is spaced reciprocally allowed the thickness place with the open circuit conductive part; One double check circuit, be to be connected with above-mentioned lead piece, when this liner wears away to this minimum thickness and with this first brake member butt, this lead piece can connect with this first brake member and make this double check circuit formation short circuit and send a short-circuit signal, and when this liner wore away to this minimum thickness but not with this first brake member butt, this lead piece did not connect with this first brake member and makes this double check circuit formation open circuit and send an open circuit signaling.
[description of drawings]
Below by most preferred embodiment and accompanying drawing worn brake block of the present invention and abnormal tyre pressure caution system are elaborated, in the accompanying drawing:
Fig. 1 is a kind of in the past unitary construction cutaway view of worn brake block alarming device.
Fig. 2 is that first preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system is mounted on the configuration schematic diagram on the car body.
Fig. 3 is that this lead piece is embedded in the cutaway view in the liner and shows itself and the aspect that is connected of this double check circuit in first preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system.
Fig. 4 shows in first preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system that this liner contacts with this first brake member to rub and this liner has worn away the aspect of allowing the thickness place to this minimum.
Fig. 5 shows in first preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system that this liner does not contact with this first brake member and this liner has worn away the aspect of allowing the thickness place to this minimum.
Fig. 6 is second preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system, and it shows the aspect that is connected of this lead piece and another double check circuit.
Fig. 7 shows in second preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system that this liner contacts with this first brake member to rub and this liner has worn away the aspect of allowing the thickness place to this minimum.
Fig. 8 shows in second preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system that this liner does not contact with this first brake member and this liner has worn away the aspect of allowing the thickness place to this minimum.
Fig. 9 is the detail structure cutaway view and the display of tyre tire pressure aspect just often of the pressure-sensitive part of this tire pressure detecting device among the embodiment of worn brake block of the present invention and abnormal tyre pressure caution system.
Figure 10 is that the detail structure cutaway view of this pressure-sensitive part among Fig. 9 and display of tyre tire pressure are crossed the aspect when low.
Figure 11 is the detail structure cutaway view of this pressure-sensitive part among Fig. 9 and the display of tyre tire pressure aspect when too high.
Figure 12 is that this tire pressure detecting device uses another internal structural map of pneumatic among the embodiment of worn brake block of the present invention and abnormal tyre pressure caution system.
Figure 13 is the circuit box scheme drawing of this tire pressure detecting device and signal processing unit and display unit among the embodiment of worn brake block of the present invention and abnormal tyre pressure caution system.
Figure 14 is that tire pressure detects and the signal of double check circuit reaches the circuit diagram of this signal processing unit with coaxial cable in the 3rd preferred embodiment of worn brake block of the present invention and abnormal tyre pressure caution system.
[specific embodiment]
Consult shown in Figure 2, be first embodiment of worn brake block of the present invention and abnormal tyre pressure caution system, this worn brake block and abnormal tyre pressure caution system 2 comprise a lead piece 21, a double check circuit 22, a tire pressure detecting device 23, a signal processing unit 24 and a display unit 25.And the present invention be with the dish that is applied to a vehicle very system as embodiment, as shown in Figure 3, this dish very system comprises that a fixed cover is located at vehicle wheel rim (figure does not show) central rotating shaft, and be first brake member of synchronous coaxial rotation with this wheel rim, it is metallic brake disc 11, this disc 11 axial two outside specified distance relatively is provided with a pair of (only showing one among the figure) and is all metal brake holder 12, and this sets firmly a pair of (only showing one among the figure) tool specific thicknesses but than second brake member of video disc 11 softnesses to brake holder 12 and each relatively towards disc 11 directions, it is non-metal brake liner 13 (being commonly called as Lining), this does not have a determining deviation to liner 13 and 11 of discs before brake activates, and in brake process, make this to brake liner 13 in opposite directions near and be pressed against brake disc 11, borrow the effect of this friction force generation slowing-down brake to producing between liner 13 and disc 11 mating surfacess.
Refer again to shown in Figure 3, this lead piece 21 is to be embedded in the above-mentioned liner 13, it comprises a short circuit conductive part 26 and an open circuit conductive part 27 that mutual isolation is provided with, this short circuit conductive part 26 is the metallic conductors with length-specific, the one end extends to the minimum of this liner 13 and allows thickness, be dotted line 131 places among Fig. 3, the other end then passes this brake holder 12 and exposes.
This open circuit conductive part 27 also is a metallic conductor, it comprises that two connect arm 271,272 and and connect this and two connect the touching arm 273 of arm 271,272 and be one " ㄈ " shape, this touches arm 273 is that the minimum that protrudes from this liner 13 is a little allowed thickness place (dotted line 131) and parallel with this dotted line 131, just is positioned at this minimum and allows on the thickness (being dotted line) and these short circuit conductive part 26 1 ends and this two connects arm 271,272 1 ends.
This double check circuit 22, as shown in Figure 3, comprise a short-circuit detecting circuit 28 and an open detection circuit 29, this short-circuit detecting circuit 28 comprises one first resistance R 1 (1k Ω) and second resistance R 2 (100k Ω), these first resistance R, 1 one end connection+5V voltages, the other end connects these short circuit conductive part 26 other ends and second resistance R, 2 one ends, and second resistance R, 2 other ends then are connected to this signal processing unit 24.This open detection circuit 29 comprises one the 3rd resistance R 3 (1K Ω) and one the 4th resistance R 4 (1K Ω), the 3rd resistance R 3 one end connection+5V voltages, the other end and open circuit electricity connect that one of portion 27 connects that arm 272 is connected and via these open circuit conductive part 27 ground connection, the other end connects the 4th resistance R 4 one ends, and the 4th resistance R 4 other ends then are connected to this signal processing unit 24.Therefore, in the vehicle related brake repeatedly that travels for a long time, liner 13 is reduced gradually because of abrasion thickness in brake process, when liner 13 does not wear away when the minimum at dotted line 131 places is allowed thickness, this short-circuit detecting circuit 28 produces the normal signal of one+5V, and this open detection circuit 29 can produce the normal signal of one+2.5V and deliver to respectively in this signal processing unit 24, and shows that by display unit 25 (being a Liquid Crystal Display (LCD)) liner 13 is to be in normal service condition.And with reference to shown in Figure 4, when having worn away to the minimum shown in the dotted line 131, this liner 13 allows the thickness place, these short circuit conductive part 26 1 ends can expose, and the contacting part 273 of this open circuit conductive part 27 can be worn away, then work as steerman and during driving, trample brake, when making liner 13 conflict friction with metal disc 11 surfaces, two of this short circuit conductive part 26 and open circuit conductive part 27 connects arm 271,271 can directly contact conduction with this metal disc 11, make this short-circuit detecting circuit 28 via this short circuit conductive part 26, the arm 271 that connects of metal disc 11 and open circuit conductive part 27 forms a short-circuit loop, and the short-circuit signal that produces a 0V is delivered to this signal processing unit 24, after this signal processing unit 24 is judged, export the result to this display unit 25 and show, remind driving or this liner 13 of maintenance personnel to have changed.
Refer again to shown in Figure 5, for increasing detection accuracy and improving travel safety, when having worn away to this minimum, this liner 13 allows thickness, when but steerman does not touch on the brake, because the arm 273 that touches of this open circuit conductive part 27 has been worn away, the open circuit signaling that makes this open detection circuit 29 form an open circuit loop and produce one pact+5V exports this signal processing unit 24 to, exports display unit 25 to and show the situation that liners 13 have worn away and need to change after judging.
Therefore, double check via above-mentioned double check circuit 22, no matter having, steerman do not touch on the brake, when car electric power is activated, can learn immediately whether liner 13 has worn away to its minimum and allow thickness and need change, whereby, be improved the accuracy and the promptness of detection, and increase the traffic safety of steerman.
Refer again to Fig. 6～shown in Figure 8, it is the second embodiment of the present invention, what they were different with first embodiment is, use another kind of double check circuit 30, it comprises one the 5th resistance R 5 (1K Ω), one the 6th resistance R 6 (1K Ω) and one the 7th resistance R 7 (100K Ω), the 5th resistance R 5 one ends connect one+5V voltage, the other end connects this short circuit conductive part 31, the 6th resistance R 6 one ends and the 7th resistance R 7 one ends, the 6th resistance R 6 other ends are via these open circuit conductive part 32 ground connection, and the 7th resistance R 7 other ends then are connected to this signal processing unit 24.
Therefore, as shown in Figure 6, when liner 33 did not wear away to this minimum thickness dotted line 331, normal signal to this signal processing unit 24 that this double check circuit 30 can produce one+2.5V showed that after judging liner is to be in normal operating condition.And as shown in Figure 7, when having worn away, this liner 33 to this minimum thickness dotted line 331 this short circuit conductive part 31 is exposed and the contacting part 323 of this open circuit conductive part 32 when being worn away, when this liner 33 contacts with this metal disc 34, this double check circuit 30 is delivered to this signal processing unit 24 via the short-circuit signal that arm 322 forms short-circuit loops and produce a 0V that connects of this short circuit conductive part 31, metal disc 34 and this open circuit conductive part 32, makes to show the information that liner has worn away on display unit 25.
Again as shown in Figure 8, when liner 33 does not contact with brake disc 34 but liner 32 when having worn away to minimum thickness place 331, this double check circuit 30 by two of this open circuit conductive part 32 unconnected connect arm 321,322 open circuits and produce one+5V open circuit signaling deliver to this signal processing unit 24, make and after judging, order about this display unit 25 and show the information that liners 32 have worn away.
Then, with reference to Fig. 2, Fig. 9 and shown in Figure 13, in the above-described embodiments, this tire pressure detecting device 23 includes a pressure-sensitive part 231, one activating member 232 and a testing circuit 50, wherein, this pressure-sensitive part 231 is combinations or one-body molded in tire 10, as shown in Figure 9, it comprises that one first is excited body 233, one second is excited body 234 and is arranged on the opening 41 of a housing 40 pneumatic 42, this pneumatic 42 medial extremity connection one is positioned at the sliding part 43 of housing 40, this sliding part 43 and with housing 40 in conducting strips 44 form and be electrically connected, and first be excited body 233 and be connected to this conducting strip 44 by this for this pneumatic 42 via an electric capacity 45, and be provided with one second be excited the contacts 46 that body 234 electrically contacts with this in housing 40, and this contact 46 and second is excited 234 of bodies and is connected an electric capacity 47.And this pneumatic 42 be one to be formed with the elastic expanded body of air chamber 421, and tire pressure is to be entered in the air chamber 421 and passed this pneumatic 42 by this opening 41, makes corresponding tire pressure switch this and be excited body 233,234 and form and open a way or short-circuit conditions.Therefore, as shown in Figure 9, when tire pressure just often, this pneumatic 42 is subjected to the normal barometric pressure appropriateness and expands, sliding part 43 is contacted with conducting strip 44, and this first is excited body 233 and forms a short-circuit loop, at this moment, as shown in figure 13, this excites body 232 to deliver to these testing circuit 50 detection output one pulse wave signals and to deliver to this signal processing unit 24 by induction one induced signal; And as shown in figure 10, when tire pressure is not enough, understand to shrink and this sliding part 43 is slided for this pneumatic 42 and break away from these conducting strips 44, make this first be excited body 233 and second and be excited body 234 and form open circuit simultaneously, this excites body 232 can not produce induced signal, therefore can not export pulse wave signal through testing circuit 50; Again as shown in figure 11, when tire pressure is excessive, this pneumatic 42 spreading makes this sliding part 43 contact this conducting strip 44 and contact 46 simultaneously, and make this first be excited body 233 and second and be excited body 234 and form short circuit simultaneously, make this excite body 232 to produce an induced signal and detect back two pulse wave signals of output continuously through this testing circuit 50.
Therefore, when this signal processing unit 24 receives only a pulse wave signal in a predetermined period, judge that promptly tire is in positive atmospheric pressure state, when in a predetermined period, not receiving pulse wave signal, judge that promptly tire is in low-pressure state, and when in a predetermined period, receiving two pulse wave signals continuously, judge that promptly tire is in high pressure conditions, and result of determination is presented on this display unit 25, learn by steerman to repay the tire pressure state at any time.
And for example shown in Figure 12, in the above-described embodiments, this tire pressure detecting device 23 also can use another kind of pneumatic 61, this pneumatic 61 is that group is located in this housing 40, it is a bluff body and the inner air chamber 611 that forms, and these bluff body two sides are formed with fold 612, and only use one to be excited body 62 and conducting strip 63.When 64 contacts of this sliding part of pneumatic 61 on this conducting strip 63, promptly representing tire is to be in the normal tire pressure condition, and when this sliding part 64 slips away this conducting strip 63, promptly represents pressure of tire to take place unusually.
Certainly, as shown in figure 13, also can add a phonation unit 51 in the above-described embodiments, when this signal processing unit 24 receives from the short-circuit signal of this double check circuit 22 or open circuit signaling, an exportable alarm signal orders about these phonation unit 51 sounding and has reached the abrasion situation with caution steerman liner, perhaps the tire pressure that detects when this tire pressure detecting device 23 is exported an alarm signal and is ordered about this phonation unit 51 with different aural warning steerman abnormal tyre pressures when this signal processing unit 24 is differentiated for unusual condition (too high or too low as tire pressure).
In addition, display unit 25 in the embodiments of the invention can also be at corresponding two LED (light-emitting diode) that are provided with of each tire, to show liner abrasion situation and tire pressure situation respectively, when liner and tire pressure just often, promptly order about each LED and give a green light, and worn away and during abnormal tyre pressure, then ordered about each LED to send out a warning when liner, so, steerman promptly can be grasped tire state at a glance immediately.
In addition, with reference to shown in Figure 14, it is the third embodiment of the present invention, its different Yu Gengke of being in previous embodiment use a coaxial cable to transmit tire pressure induced signal and brake detection signal, the induced signal that excites body 323 to be produced that also is about to the tire pressure detecting device 23 of each tire is sent to this testing circuit 50 via a coaxial cable 52 and handles, and then deliver to this signal processing unit 24, and use another to be connected in these coaxial cable 52 two ends to detect the double check circuit 36 of worn brake block situation, so that detection signal is sent to this signal processing unit 24 via this coaxial cable 52.This double check circuit 36 is made of resistance R 8, R9, R10 and R11.These resistance R 8 one ends connect the mouth of this resistance R 9, this coaxial cable 52 and are connected to this testing circuit 50 via one first capacitor C 1, and its other end connects a voltage source Vcc.The other end of this resistance R 9 connects one the 3rd capacitor C 3 and this signal processing unit 24.These resistance R 10 1 ends are via the input end that excites body 323 mouths and this coaxial cable 52 of one second capacitor C, 2 these tire pressure detecting devices 23 of connection, and the other end connects this short circuit conductive part 31 and resistance R 11.The other end of this resistance R 11 then connects this open circuit conductive part 32.Therefore, testing circuit 50 sends signal and enters in the coaxial cable 52 via first capacitor C, 1 commissure, excite body 232 by second capacitor C, 2 commissures to this again, make with tire in the body 233,234 of being excited produce the mutual inductance effects and produce an induced signal and deliver to via coaxial cable 52 and deliver to this signal processing unit 24 after detecting in this testing circuit 50 and show results.This voltage source Vcc then is to be connected to this short circuit conductive part 31 and open circuit conductive part 32 respectively by resistance R 8 input coaxial cables 52 and via this resistance R 10, R11.When the brake normal condition, this voltage source Vcc is exported a normal voltage signal (brake detection signal) to this signal processing unit 24 by resistance R 8, R10 and R11 dividing potential drop and by coaxial cable 52 mouths.When this open circuit conductive part 32 was worn away and opens a way, the open circuit signaling (brake detection signal) that these coaxial cable 52 mouths are exported a high levle (being about voltage source value Vcc) was delivered to this signal processing unit 24 after via resistance R 9 and the 3rd capacitor C 3 (low pass) filtering.And be worn away when being short-circuited with metal disc 34 when this short circuit conductive part 31, this voltage source Vcc is promptly delivered to this signal processing unit 24 by resistance R 8 and R10 dividing potential drop and the short-circuit signal (brake detection signal) of being exported a low level (Vcc * R10/ (R8+R10)) by these coaxial cable 52 mouths after via resistance R 9 and the 3rd capacitor C 3 (low pass) filtering.And after above-mentioned brake detection signal imports this signal processing unit 24, this signal processing unit 24 detection signal that can should brake converts digital signal to through analog/digital (A/D) and is also judged, and export judged result to this display unit 25, or export this phonation unit 51 to and make in good time and give the alarm.And the purpose that this first and second capacitor C 1, C2 are set respectively at the two ends of coaxial cable 52 mainly is to lose efficacy in order to the unlikely body that is excited of direct current signal (inductance) 232 short circuits that intercept these double check circuit 36 outputs.
In sum, worn brake block of the present invention and abnormal tyre pressure caution system can carry out double check and show that in good time testing result allows steerman know by this double check circuit 22,30 or 36 the worn brake block situation of wheel body, and the accuracy and the promptness that improve to detect and increase the traffic safety of steerman, and the tire pressure by this tire pressure detecting device 23 detects, can learn simultaneously that the tire pressure situation and the repayment of tire give steerman, travel safety is promoted more.
Claims (8)
1, a kind of worn brake block and abnormal tyre pressure caution system, be to be applied on the wheel body and brake system thereof of carrier, this brake system comprise one can with this wheel body rotate and conductive first brake member and at least one can towards this first brake member near or away from second brake member, this second brake member also is provided with a liner, be used to borrow when this brake system activates this liner and this first brake member frictional engagement and produce the slowing-down brake effect, it is characterized in that this caution system includes:
One tire pressure detecting device is to detect the also corresponding tire pressure that detected of tire pressure with wireless mutual inductance resonance mode to produce an induced signal;
One signal processing unit is in order to receiving and to judge short-circuit signal and open circuit signaling from above-mentioned double check circuit respectively, and the induced signal of this tire pressure detecting device, and sends an alarm signal according to this; And
One display unit is to be located to be easy to watch the position on this carrier and to be connected with above-mentioned signal processing unit, so that the judgment result displays of this signal processing unit is come out;
It is characterized in that described caution system further comprises:
One lead piece is to be embedded in the interior minimum of this liner to allow the thickness place, and described lead piece comprises a short circuit conductive part and an open circuit conductive part, and this short circuit conductive part is that the minimum that is embedded in this liner is spaced reciprocally allowed the thickness place with the open circuit conductive part;
One double check circuit, be to be connected with above-mentioned lead piece, when this liner wears away to this minimum thickness and with this first brake member butt, this lead piece can connect with this first brake member and make this double check circuit formation short circuit and send a short-circuit signal, and when this liner wore away to this minimum thickness but not with this first brake member butt, this lead piece did not connect with this first brake member and makes this double check circuit formation open circuit and send an open circuit signaling.
2, worn brake block as claimed in claim 1 and abnormal tyre pressure caution system, it is characterized in that: this double check circuit comprises a short-circuit detecting circuit and an open detection circuit, this short-circuit detecting circuit is to be connected with above-mentioned short circuit conductive part, when this liner had worn away to this minimum thickness place and contacted with this first brake member, this short circuit conductive part and open circuit conductive part can expose and contact with this first brake member and make this short-circuit detecting circuit formation short circuit and send a short-circuit signal; This open detection circuit is to be connected with above-mentioned open circuit conductive part, and when this liner has worn away when this minimum is allowed thickness and do not contact with this first brake member, this open circuit conductive part can make this open detection circuit form open circuit and send an open circuit signaling.
3, worn brake block as claimed in claim 2 and abnormal tyre pressure caution system is characterized in that: this short circuit conductive part is one to be embedded in the metallic conduction portion of length-specific in this liner, and the one end is positioned at this minimum and allows the thickness place; This open circuit conductive part also is a metallic conduction portion, it has two and connects arm and and connect this and two connect the touching arm of the same end of arm and be " ㄈ " shape, and its touch arm and this two connect an arm part be embedded in the liner and this to touch arm be that the thickness place is allowed in this minimum in the position.
4, worn brake block as claimed in claim 3 and abnormal tyre pressure caution system, it is characterized in that: this open detection circuit is to form a galvanic circle via this open circuit conductive part, when the abrasion of this liner surpass that this minimum is allowed thickness and the arm that touches of the conductive part of will opening a way wears away and makes this two connect arm when not connecting, this open detection circuit promptly forms opens a way and produces an open circuit signaling.
5, worn brake block as claimed in claim 2 and abnormal tyre pressure caution system, it is characterized in that: when the abrasion of this liner were no more than this minimum and allow the thickness place, this open detection circuit forms a galvanic circle and produces a normal signal with the open circuit conductive part delivered to this signal processing unit.
6, worn brake block as claimed in claim 1 and abnormal tyre pressure caution system, it is characterized in that: this tire pressure detecting device comprise one in conjunction with or one-body molded pressure-sensitive part, in wheel body be arranged near exciting a body and a testing circuit on the carrier at this wheel body place, this pressure-sensitive part comprises and at least onely is incorporated into or one-body moldedly is excited body in tire, and pneumatic of being arranged on the shell nozzle, wheel body air pressure can by this opening enter and pass this pneumatic make corresponding wheel body pressure switch these to be excited body be open circuit or short-circuit condition; This excites to know from experience and produces excitation signal, when these are excited body when being short-circuit condition, meeting excite body near this and respond to generation one induced signal and deliver to this testing circuit in preset distance, this induced signal correspondence after this testing circuit detects is exported pulse wave signal to this signal processing unit.
7, worn brake block as claimed in claim 1 and abnormal tyre pressure caution system is characterized in that: this display unit is a Liquid Crystal Display (LCD).
8, worn brake block as claimed in claim 1 and abnormal tyre pressure caution system is characterized in that: this display unit comprise a plurality of correspondences respectively this tire setting to show the light-emitting diode component of liner abrasion and tire pressure situation respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01137842 CN1206121C (en) | 2001-11-05 | 2001-11-05 | Warning system for worn brake block and abnormal tyre pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01137842 CN1206121C (en) | 2001-11-05 | 2001-11-05 | Warning system for worn brake block and abnormal tyre pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417045A CN1417045A (en) | 2003-05-14 |
| CN1206121C true CN1206121C (en) | 2005-06-15 |
Family
ID=4674281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01137842 Expired - Fee Related CN1206121C (en) | 2001-11-05 | 2001-11-05 | Warning system for worn brake block and abnormal tyre pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206121C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE530423C2 (en) * | 2005-04-21 | 2008-06-03 | Volvo Lastvagnar Ab | Brake pad identification system |
| JP2011516339A (en) * | 2008-04-10 | 2011-05-26 | ボルボ ラストバグナー アーベー | How to identify the position of the brake monitor |
| CN105485226A (en) * | 2016-01-27 | 2016-04-13 | 徐州重型机械有限公司 | Brake lining abrasion detection device and wheel crane |
| KR102485399B1 (en) * | 2017-09-27 | 2023-01-05 | 현대자동차주식회사 | Vehicle, and control method for the same |
| CN110758024B (en) * | 2018-07-25 | 2022-04-15 | 比亚迪股份有限公司 | Tire wear alarm device and have its tire assembly |
| DE102018120477A1 (en) * | 2018-08-22 | 2020-02-27 | Wabco Gmbh | Electronic braking system |
| CN109606381A (en) * | 2018-12-17 | 2019-04-12 | 安徽江淮汽车集团股份有限公司 | A method of vehicle self-test is carried out using brake block information |
| CN112253659A (en) * | 2020-10-14 | 2021-01-22 | 何建斌 | Visual brake pad abrasion warning equipment for brake |
-
2001
- 2001-11-05 CN CN 01137842 patent/CN1206121C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1417045A (en) | 2003-05-14 |
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