CN201566599U - Automobile brake hub automatic cooling device - Google Patents
Automobile brake hub automatic cooling device Download PDFInfo
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- CN201566599U CN201566599U CN2009203149243U CN200920314924U CN201566599U CN 201566599 U CN201566599 U CN 201566599U CN 2009203149243 U CN2009203149243 U CN 2009203149243U CN 200920314924 U CN200920314924 U CN 200920314924U CN 201566599 U CN201566599 U CN 201566599U
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- brake hub
- control circuit
- automotive brake
- cool system
- auto
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Abstract
The utility model discloses an automobile brake hub automatic cooling device which comprises a temperature sensor and a checking control circuit, wherein the checking control circuit comprises a control chip which is connected with two ends of the temperature sensor, and a photoelectric coupler, wherein two input ends of the photoelectric coupler are respectively connected with a signal output end of the control chip and are earthed, and the two output ends are respectively connected with a control valve of a water spraying device and are earthed. The control circuit of the embodiment is simple and reliable.
Description
Technical field
The utility model relates to auto manufacturing technology, relates in particular to a kind of automotive brake hub auto-cool system.
Background technology
The mountain road slope is big curved anxious, needs frequent braking in the vehicle traveling process, and the drg work-hours is longer, brake strap and braking hub generate heat easily, cause the friction coefficient of friction lining sharply to descend, cause the vehicle brake efficacy decline, have a strong impact on the reliability of braking.In order to keep traffic safety, improve vehicular transport efficient, need be to drg processings of lowering the temperature, minimizing thermal load.
At present, lorry generally uses the cheap trickle type of cooling to the drg processing of lowering the temperature, and this kind method often causes the strain cracking of braking hub owing to can not accurately grasp the opportunity of trickle cooling.
After the contriver concentrates on studies to this problem, a kind of digital control system of one-chip computer was proposed,--signal amplification--Computer Processing--output control signal---the open water valve that passes through temperature sampling, reach the effect of control water injecting system work, but the circuit of this control system is comparatively complicated.
The utility model content
Technical problem to be solved in the utility model is: a kind of automotive brake hub auto-cool system is provided, and this apparatus structure is simple, components and parts are few and simplify control logic, improves system reliability.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of automotive brake hub auto-cool system includes temperature sensor and detects control circuit, and described detection control circuit includes:
One control chip that links to each other with the two ends of described temperature sensor and a photoelectrical coupler, two input ends of described photoelectrical coupler link to each other, reach ground connection respectively with the signal output part of described control chip, its two mouth then links to each other with the water injecting system control cock respectively and ground connection.
The beneficial effects of the utility model are:
Embodiment of the present utility model passes through to adopt the detection control circuit simple, that components and parts are few, thereby has simplified control logic effectively, the system reliability height.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the schematic circuit diagram of the embodiment of automotive brake hub auto-cool system that provides of the utility model.
Fig. 2 is the scheme of installation of the embodiment temperature sensor of automotive brake hub auto-cool system that provides of the utility model.
The specific embodiment
Describe an embodiment of the automotive brake hub that the utility model provides in detail below with reference to Fig. 1 and Fig. 2.
Present embodiment mainly includes and is arranged on the temperature sensor in the braking hub temperature sensing range and detects control circuit, and as shown in Figure 1, temperature sensor adopts K type thermocouple, and described detection control circuit includes:
An one control chip U1 and a photoelectrical coupler U2 who links to each other with the two ends of described K type thermocouple, two input ends of photoelectrical coupler U2 link to each other, reach ground connection respectively with the signal output part VO (No. 9 pins) of described control chip U1, its two mouth then links to each other with the water injecting system control cock respectively and ground connection.During specific implementation, control chip U1 can adopt AD595 monolithic K type thermocouple amplifier, according to testing result from K type thermocouple, and the signal of output 0V or 4V two states, direct control photoelectrical coupler U2, components and parts are few, system reliability is high.
In addition, described detection control circuit also includes a VREF (Voltage Reference) unit is set.During specific implementation, when the reference voltage input terminal FB of control chip U2 (No. 8 pins) provided the accurate voltage of reference to be 810mV, its detected temperatures threshold values was 80 ℃, and following table 1 shows the relation of detected temperatures and VREF (Voltage Reference).In this case, when this control chip U2 bonded assembly K of institute type thermocouple detected temperatures is lower than 80 ℃, the active potential of a 0V of its No. 9 pin outputs, this moment, photoelectrical coupler was not worked, and water injecting system control cock (water pump or electromagnetic valve) is not worked; When detected temperatures is higher than 80 ℃, the high potential of one+4V of No. 9 pin output, this high potential exports photoelectrical coupler U2 to and makes its work, thereby make battery supply (12V) drive water pump (perhaps electromagnetic valve) work, water in the water injecting system reserve tank is ejected into outside the braking hub, reduce the temperature of brake strip, make it be operated in the ideal temperature scope, reach system performance optimization.
In addition, the detection control circuit of present embodiment also is provided with a VREF (Voltage Reference) regulon.During specific implementation, this unit includes one and is arranged on the VREF (Voltage Reference) adjustable side+T (No. 3 pins) of control chip U2 and the variable resistance between No. 9 pins.Under the accurate voltage unmodified of the reference situation that No. 8 pins provide, provide the integral multiple electric current of a 200nA to No. 3 pins, can improve 1 ℃ integral multiple with detecting the operating temperature that drives water pump (perhaps electromagnetic valve); When detecting the control range of temperatures and change greatly, can change the accurate voltage of reference that No. 8 pins provide, its variation range is levied with reference to following table 1.
Table 1, detected temperatures and VREF (Voltage Reference) relation table
Table 1, detected temperatures and VREF (Voltage Reference) relation table
| Detected temperatures (℃) | K type thermocouple output voltage (mv) | AD595 output voltage (mv) |
| 30 | 1.203 | 300 |
| 40 | 1.611 | 401 |
| 50 | 2.022 | 503 |
| 60 | 2.436 | 605 |
| 80 | 3.266 | 810 |
| 100 | 4.095 | 1015 |
| 120 | 4.919 | 1219 |
In addition, this detection control circuit also is provided with a sensor breaking alarming unit.When opening circuit between K type thermocouple and the control chip U2, the LED warning indicator lamp that is connected to warning mouth+ALM (No. 12 pins) of control chip U2 is lighted warning automatically, in time tell chaufeur this moment owing to detect less than temperature signal, this detection control circuit can not carry out spray cooling to the braking hub.
With reference to figure 2, the figure shows the installation site of K type thermocouple in the present embodiment; Because brake shoe brake cheek 1 all is the bad conductor of heat with friction lining 2, and the frequent vibration in braking procedure, also is unfavorable for the installation of sensor.Therefore thermocouple can only be installed in the temperature traverse that can either detect braking hub 3 more accurately, again not with braking the position that hub 3 rotates, through comparative analysis, thermocouple temperature sensor is installed in the installation region 5 of brake wheel cylinder 4 upper ends, distance braking hub 3 running surfaces (being inner headed face) are very approaching, but can not contact with braking hub 3.Because the inside of hub type brake is osed top, comparatively fast dissipation of the heat that produces in the braking procedure, and thermocouple sensor and braking hub running surface are very approaching, so can detect the temperature on the braking hub more accurately.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (7)
1. an automotive brake hub auto-cool system includes temperature sensor and detects control circuit, it is characterized in that described detection control circuit includes:
One control chip that links to each other with the two ends of described temperature sensor and a photoelectrical coupler, two input ends of described photoelectrical coupler link to each other, reach ground connection respectively with the signal output part of described control chip, its two mouth then links to each other with the water injecting system control cock respectively and ground connection.
2. automotive brake hub auto-cool system as claimed in claim 1 is characterized in that, described temperature sensor is a K type thermocouple.
3. automotive brake hub auto-cool system as claimed in claim 2 is characterized in that, the K of institute type thermocouple is arranged on the brake wheel cylinder upper end.
4. as each described automotive brake hub auto-cool system among the claim 1-3, it is characterized in that described detection control circuit also includes a VREF (Voltage Reference) unit is set.
5. automotive brake hub auto-cool system as claimed in claim 4 is characterized in that, described detection control circuit also includes a VREF (Voltage Reference) regulon.
6. automotive brake hub auto-cool system as claimed in claim 4 is characterized in that, described detection control circuit also includes a sensor breaking alarming unit.
7. as each described automotive brake hub auto-cool system among the claim 1-3, it is characterized in that described detection control chip is an AD595 monolithic K type thermocouple amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203149243U CN201566599U (en) | 2009-11-17 | 2009-11-17 | Automobile brake hub automatic cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203149243U CN201566599U (en) | 2009-11-17 | 2009-11-17 | Automobile brake hub automatic cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201566599U true CN201566599U (en) | 2010-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203149243U Expired - Fee Related CN201566599U (en) | 2009-11-17 | 2009-11-17 | Automobile brake hub automatic cooling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201566599U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183014A (en) * | 2013-03-25 | 2013-07-03 | 王建章 | Automatic water cooling system of car brake |
| CN103280767A (en) * | 2013-04-18 | 2013-09-04 | 深圳市海浦蒙特科技有限公司 | Brake resistor protection circuit and brake resistor protection method for inverters |
| CN110063721A (en) * | 2019-03-12 | 2019-07-30 | 南京信息工程大学 | Measure the intelligent shoe and sign measurement method, piezoelectric approach of human body physical sign information |
-
2009
- 2009-11-17 CN CN2009203149243U patent/CN201566599U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183014A (en) * | 2013-03-25 | 2013-07-03 | 王建章 | Automatic water cooling system of car brake |
| CN103280767A (en) * | 2013-04-18 | 2013-09-04 | 深圳市海浦蒙特科技有限公司 | Brake resistor protection circuit and brake resistor protection method for inverters |
| CN103280767B (en) * | 2013-04-18 | 2016-08-17 | 深圳市海浦蒙特科技有限公司 | The braking resistor protection circuit of converter and method |
| CN110063721A (en) * | 2019-03-12 | 2019-07-30 | 南京信息工程大学 | Measure the intelligent shoe and sign measurement method, piezoelectric approach of human body physical sign information |
| CN110063721B (en) * | 2019-03-12 | 2024-03-22 | 南京信息工程大学 | Intelligent shoe for measuring human body sign information, sign measuring method and piezoelectric method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20101117 |