CN212289806U - Service brake air pressure monitoring fault alarm system for pure electric bus - Google Patents
Service brake air pressure monitoring fault alarm system for pure electric bus Download PDFInfo
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- CN212289806U CN212289806U CN202020364713.7U CN202020364713U CN212289806U CN 212289806 U CN212289806 U CN 212289806U CN 202020364713 U CN202020364713 U CN 202020364713U CN 212289806 U CN212289806 U CN 212289806U
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Abstract
The utility model discloses pure [ electric ] motor coach service brake air pressure monitoring malfunction alerting system includes whole car VCU, panel board and the brake master cylinder that links to each other with whole car VCU, whole car baroceptor and the room pressure monitoring sensor group that links to each other with the panel board, be equipped with instrument CPU on the panel board, instrument display screen and instrument buzzer, room pressure monitoring sensor group is including left front brake chamber pressure sensor, right front brake chamber pressure sensor, left back brake chamber pressure sensor and right back brake chamber pressure sensor, left front brake chamber pressure sensor, right front brake chamber pressure sensor, left back brake chamber pressure sensor, right back brake chamber pressure sensor, whole car baroceptor and whole car VCU all are connected to on the instrument CPU. The utility model discloses increase service brake air chamber pressure sensor on whole car baroceptor basis, effective monitoring brake chamber's pressure avoids effectively reducing the traffic accident because the potential safety hazard that service brake work is abnormal to be brought.
Description
The technical field is as follows:
the utility model relates to a pure [ electric ] motor coach service brake air pressure monitoring fault alarm system, it belongs to automobile parts technical field.
Background art:
the normal service braking function of the passenger car is a necessary condition for the vehicle to run, the service braking force depends on the pressure of the air chamber, and the maintenance of the pressure of the air chamber in a normal value range is important. When the vehicle works normally, because the working environment is complex, the brake pipeline can be damaged due to various reasons, or the brake valve body is in mechanical failure, so that the brake system works abnormally or fails completely. If the driver can not know the service brake fault in time and gets out of the vehicle, the potential safety hazard is very high.
In view of the above, it is necessary to develop a service brake air pressure monitoring fault alarm system for a pure electric bus.
The utility model has the following contents:
the utility model relates to a solve the problem that above-mentioned prior art exists and provide a pure [ electric ] motor coach service brake air pressure monitoring malfunction alerting system, footboard aperture signal when based on whole car air pressure value and service brake, judge whether normal in the pressure value of whole car front and back wheel brake chamber, if the difference of wheel air chamber pressure value exceeds the admissible value about the discovery, perhaps front and back axle brake chamber pressure value is less than the normal value, in time carry out malfunction alerting to the driver, the warning suggestion is that instrument display and voice prompt go on simultaneously, suggestion driver vehicle service brake is abnormal, in time need carry out safety inspection, get rid of the safety risk.
The utility model adopts the following technical scheme: the utility model provides a pure [ electric ] motor coach service brake air pressure monitoring fault alarm system, includes whole car VCU, the panel board and the brake master cylinder that link to each other with whole car VCU, the whole car baroceptor and the room pressure monitoring sensor group that links to each other with the panel board, be equipped with instrument CPU, instrument display screen and instrument buzzer on the panel board, room pressure monitoring sensor group is including left front brake chamber pressure sensor, right front brake chamber pressure sensor, left back brake chamber pressure sensor and right back brake chamber pressure sensor, left front brake chamber pressure sensor, right back brake chamber pressure sensor, whole car baroceptor and whole car VCU all are connected to on the instrument CPU.
The utility model discloses still adopt following technical scheme: a method for monitoring and alarming faults of service brake air pressure of a pure electric bus comprises the following steps:
the method comprises the following steps: the pressure sensor of the left front brake air chamber and the pressure sensor of the right front brake air chamber respectively monitor the pressure of the left brake air chamber and the right brake air chamber of the front axle during service braking, data are transmitted to the CPU of the instrument, the CPU of the instrument analyzes and judges, if the pressure difference value of the left brake air chamber of the front axle and the right brake air chamber of the front axle is more than 25 percent, the brake fault is judged, and the CPU of the instrument sends an instruction to the display screen of the instrument and the buzzer of the instrument to carry out fault alarm;
step two: the pressure sensors of the left rear brake air chamber and the right rear brake air chamber respectively monitor the pressure of the left brake air chamber and the right brake air chamber of the rear axle during service braking, data are transmitted to the CPU of the instrument, the CPU of the instrument analyzes and judges, if the pressure difference value of the left brake air chamber of the rear axle and the right brake air chamber of the rear axle is more than 25 percent, the brake fault is judged, and the CPU of the instrument sends an instruction to the display screen of the instrument and the buzzer of the instrument to give a fault alarm;
step three: service braking, when the pressure difference value of the left brake air chamber and the right brake air chamber is 25%, the VCU of the whole vehicle collects the opening information of a brake master cylinder, the opening information is transmitted to the instrument CPU after conversion, the instrument CPU collects signals of a pressure sensor of the whole vehicle at the same time, analysis is carried out by combining the pressure values of the front brake air chamber and the rear brake air chamber, if the pressure values of the front brake air chamber and the rear brake air chamber are lower than the air pressure corresponding to the opening of the brake pedal at the moment, and the ratio of the pressure difference value to the output air pressure of the brake pedal exceeds 30%, the service braking fault is judged, and the.
The utility model discloses following beneficial effect has: the utility model discloses increased service brake chamber pressure sensor on whole car baroceptor's basis, can effectual monitoring brake chamber's pressure, avoid because the potential safety hazard that service brake work is abnormal to be brought, can effectively reduce the traffic accident. And only need increase 4 baroceptors, change the instrument CPU control logic just can realize, the design concept is simple, ingenious, effective, is fit for generally promoting.
Description of the drawings:
FIG. 1 is the utility model discloses pure [ electric ] motor coach service brake air pressure monitoring fault alarm system's schematic diagram.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
The utility model discloses pure [ electric ] motor coach service brake air pressure monitoring malfunction alerting system includes whole car VCU1, 2 panel boards and the brake master cylinder 5 that link to each other with whole car VCU1, whole car baroceptor 4 and the room pressure monitoring sensor group 3 that links to each other with panel boards 2, wherein be equipped with instrument CPU21 on the panel board 2, instrument display screen 22 and instrument buzzer 23, room pressure monitoring sensor group 3 includes left front brake chamber pressure sensor 31, right front brake chamber pressure sensor 32, left back brake chamber pressure sensor 33 and right back brake chamber pressure sensor 34, wherein left front brake chamber pressure sensor 31, right front brake chamber pressure sensor 32, left back brake chamber pressure sensor 33, right back brake chamber pressure sensor 34, whole car baroceptor 4 and whole car VCU1 all are connected to on the instrument CPU 21.
The utility model discloses pure [ electric ] motor coach service brake air pressure monitoring malfunction alerting method, the step is as follows:
the method comprises the following steps: the left front brake air chamber pressure sensor 31 and the right front brake air chamber pressure sensor 32 respectively monitor the pressure of a front axle left brake air chamber and a front axle right brake air chamber during service braking, data are transmitted to an instrument CPU21, the instrument CPU21 carries out analysis and judgment, if the pressure difference value of the front axle left brake air chamber and the front axle right brake air chamber is more than 25%, a brake fault is judged, and the instrument CPU21 sends an instruction to an instrument display screen 22 and an instrument buzzer 23 to carry out fault alarm;
step two: the left rear brake air chamber pressure sensor 33 and the right rear brake air chamber pressure sensor 34 respectively monitor the pressure of the left brake air chamber and the right brake air chamber of the rear axle during service braking, data are transmitted to the instrument CPU21, the instrument CPU21 carries out analysis and judgment, if the pressure difference value of the left brake air chamber of the rear axle and the right brake air chamber of the rear axle is more than 25 percent, the brake fault is judged, and the instrument CPU21 sends an instruction to the instrument display screen 22 and the instrument buzzer 23 to carry out fault alarm;
step three: during service braking, when the pressure difference value of the left brake air chamber and the right brake air chamber is 25%, the whole vehicle VCU1 collects the opening information of a brake master pump 5, the opening information is converted and sent to an instrument CPU21, the instrument CPU21 simultaneously collects signals of a whole vehicle air pressure sensor 4, analysis is carried out by combining the pressure values of front and rear brake air chambers, if the pressure values of the front and rear brake air chambers (the left front brake air chamber pressure sensor 31, the right front brake air chamber pressure sensor 32, the left rear brake air chamber pressure sensor 33 and the right rear brake air chamber pressure sensor 34) are lower than the air pressure corresponding to the opening of a brake pedal at the moment and the ratio of the difference value to the output air pressure of the brake pedal exceeds 30%, the service braking fault is judged, the instrument CPU21 sends an instruction to an instrument display screen 22 and an instrument buzzer 23 to carry out fault alarm, and at the moment (the signal values of the left front brake air chamber pressure, the signal values of the left rear brake chamber pressure sensor 33 and the right rear brake chamber pressure sensor 34 abnormally indicate "insufficient rear axle braking force").
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (1)
1. The utility model provides a pure [ electric ] motor coach service brake air pressure monitoring fault alarm system which characterized in that: comprises a whole VCU (1), an instrument panel (2) and a brake master cylinder (5) which are connected with the whole VCU (1), a whole air pressure sensor (4) and an air chamber pressure monitoring sensor group (3) which are connected with the instrument panel (2), the instrument panel (2) is provided with an instrument CPU (21), an instrument display screen (22) and an instrument buzzer (23), the air chamber pressure monitoring sensor group (3) comprises a left front brake air chamber pressure sensor (31), a right front brake air chamber pressure sensor (32), a left rear brake air chamber pressure sensor (33) and a right rear brake air chamber pressure sensor (34), the left front brake chamber pressure sensor (31), the right front brake chamber pressure sensor (32), the left rear brake chamber pressure sensor (33), the right rear brake chamber pressure sensor (34), the whole vehicle air pressure sensor (4) and the whole vehicle VCU (1) are connected to the instrument CPU (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020364713.7U CN212289806U (en) | 2020-03-21 | 2020-03-21 | Service brake air pressure monitoring fault alarm system for pure electric bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020364713.7U CN212289806U (en) | 2020-03-21 | 2020-03-21 | Service brake air pressure monitoring fault alarm system for pure electric bus |
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| Publication Number | Publication Date |
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| CN212289806U true CN212289806U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020364713.7U Active CN212289806U (en) | 2020-03-21 | 2020-03-21 | Service brake air pressure monitoring fault alarm system for pure electric bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252059A (en) * | 2020-03-21 | 2020-06-09 | 南京金龙客车制造有限公司 | Service brake air pressure monitoring fault alarm system and alarm method for pure electric bus |
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2020
- 2020-03-21 CN CN202020364713.7U patent/CN212289806U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252059A (en) * | 2020-03-21 | 2020-06-09 | 南京金龙客车制造有限公司 | Service brake air pressure monitoring fault alarm system and alarm method for pure electric bus |
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