CN204548075U - Vehicle Hydraulic Retarder control system - Google Patents
Vehicle Hydraulic Retarder control system Download PDFInfo
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- CN204548075U CN204548075U CN201520272345.2U CN201520272345U CN204548075U CN 204548075 U CN204548075 U CN 204548075U CN 201520272345 U CN201520272345 U CN 201520272345U CN 204548075 U CN204548075 U CN 204548075U
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Abstract
The utility model relates to the control system of auxiliary brake device for automobile, refers to a kind of Vehicle Hydraulic Retarder control system particularly.It comprises the ECU (Electrical Control Unit) be arranged in casing, the power circuit being provided with microprocessor in ECU (Electrical Control Unit) and powering for whole control system, manual control/Foot-controlled switch the signal of automobile is connected with microprocessor by digital input circuit with vehicle speed pulse, sensor is connected with microprocessor by simulated measurement input circuit, output end of microprocessor is connected with actr by output driving circuit, output driving circuit front end is connected with select switch, is connected in parallel to pulse-width modulation circuit and analogue quantity output circuit between output end of microprocessor and select switch.The utility model possesses the mode of pulse duration modulation output or analog output, can efficiently, reliably implement to control to the performance element of Vehicle Hydraulic Retarder, to be applicable to dissimilar retarder actr, reach the object of car auxiliary brake.
Description
Technical field
The utility model relates to the control system of auxiliary brake device for automobile, refers to a kind of Vehicle Hydraulic Retarder control system particularly.
Background technology
Brake system of car relates to automobile active safety, is one of most important system in automobile.Traditional friction disk type brake equipment, under the damped condition of long-time or high strength, can produce the heat fade phenomenon of brake efficiency, even cause the inefficacy of braking function thus threaten traffic safety time serious because friction lining is overheated.Therefore there is various auxiliary brake device for automobile, as exhaust braking, current vortex retarder, hydrodynamic retarder and permanent-magnet buffer etc., Jake brake can have been coordinated to reach improve and improve the object of auto brake system overall performance.
In various auxiliary brake device for automobile, Vehicle Hydraulic Retarder adopts the hydraulic brake mode of no touch wearing and tearing, and lock torque is large, be applicable to the braking of high speed, High-Powered Vehicle and long-time continuous, be particularly suitable for the auxiliary braking of various commercial vehicle/comm..vehicle (as medium-sized, heavy-duty truck, passenger vehicle etc.).Its principle of work is: rotarily drive operating fluid by the rotor of Vehicle Hydraulic Retarder and rotate, the kinetic energy of operating fluid is increased, then the blade on Vehicle Hydraulic Retarder stator is impacted, produce and stir and extrude operating fluid and the temperature of operating fluid is increased, dynamic loss of energy is transformed into heat energy, the kinetic energy of automobile is converted to the heat energy of operating fluid the most at last, thus plays the brake action of automobile.The heat energy of operating fluid is then taken away by cooling back installation and is dispersed in air.Because hydrodynamic retarder relies on the change pressure of operating fluid and the volume (filling amount) of operating fluid to control braking force, the control system technical threshold of hydrodynamic retarder is high.
Traditional hydrodynamic retarder controller is all be a certain specific hydrodynamic retarder customized design, and its way of output only possesses the one in output of pulse signal and analog signal output, poor universality, and reliability is low.
Utility model content
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides one to possess output of pulse signal and analog signal output two kinds of way of outputs simultaneously, the high and Vehicle Hydraulic Retarder control system that reliability is high of commonality.
The technical solution of the utility model is: a kind of Vehicle Hydraulic Retarder control system, it comprises the ECU (Electrical Control Unit) be arranged in casing, the power circuit being provided with microprocessor in described ECU (Electrical Control Unit) and powering for whole control system, manual control/Foot-controlled switch the signal of automobile is connected with microprocessor by digital input circuit with vehicle speed pulse, sensor for detecting hydrodynamic retarder controling parameters is connected with microprocessor by simulated measurement input circuit, described output end of microprocessor is connected with actr by output driving circuit, described output driving circuit front end is connected with select switch, pulse-width modulation circuit and analogue quantity output circuit is connected in parallel between described output end of microprocessor and select switch.
Further, described manual control/Foot-controlled switch signal, vehicle speed pulse, sensor and the shaping change-over circuit that is connected with between digital input circuit and simulated measurement input circuit for the incoming signal shaping to microprocessor.
Further, described output end of microprocessor is connected with the telltale for display working condition and relevant information.
Further, described microprocessor signals input end is connected with vehicle-mounted computer by bus interface circuit.
Further, described output driving circuit mouth is connected with relay indicating light.
The beneficial effects of the utility model are: manual control/foot control driving switch signal, vehicle speed pulse, sensor signal input to microprocessor after shaping change-over circuit shaping conversion, improve the quality of incoming signal.Outputting analog signal or impulse singla actuate actuators is selected by select switch, can efficiently, reliably implement to control to the performance element of Vehicle Hydraulic Retarder, to be applicable to dissimilar retarder actr, reach the object of car auxiliary brake, substantially increase the commonality of controller.Utilize bus interface circuit directly to read related data from vehicle-mounted computer, add the approach of controller signals input, improve commonality and the reliability of this controller.Connect telltale on the microprocessor, directly can show inner workings (as water temperature, oil temperature, pressure etc.), braking force size, alarm message etc., be conducive to man-machine interaction fault diagnosis and location.
Accompanying drawing explanation
Fig. 1 is the inner annexation figure of the utility model;
In figure: 1-microprocessor, 2-power circuit, 3-digital input circuit, 4-simulated measurement input circuit, 5-pulse-width modulation circuit, 6-output driving circuit, 7-shaping change-over circuit, 8-DLL (dynamic link library) circuit, 9-bus interface circuit, 10-casing, 11-ECU (Electrical Control Unit), 12-source switch, 13-sensor, 14-actr, 15-manual control/Foot-controlled switch signal, 16-relay indicating light, 17-telltale, 18-automotive battery, 19-automobile ignition switch, 20-vehicle speed pulse, 21-analogue quantity output circuit, 22-select switch.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Specific embodiment described herein only in order to explain the utility model, and is not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1, the utility model comprises the ECU (Electrical Control Unit) 11 be arranged in casing 10, the power circuit 2 being provided with microprocessor in ECU (Electrical Control Unit) 11 and powering for whole control system, manual control/Foot-controlled switch the signal 15 of automobile, vehicle speed pulse 20, sensor 13 is connected with shaping change-over circuit 7, shaping change-over circuit 7 mouth is connected with microprocessor 1 with simulated measurement input circuit 4 by digital input circuit 3, microprocessor 1 mouth is connected with actr 14 by output driving circuit 6, output driving circuit 6 front end is connected with select switch 22, pulse-width modulation circuit 5 and analogue quantity output circuit 21 is connected in parallel between microprocessor 1 mouth and select switch 22.Microprocessor 1 mouth is connected with the telltale 17 for display working condition and relevant information, and output driving circuit 6 mouth is connected with relay indicating light 16, and microprocessor 1 signal input part is also connected with vehicle-mounted computer by bus interface circuit 9.
Power circuit 2 is connected automotive battery 18 terminal by source switch 12 with automobile ignition switch 19 and obtains direct supply.When automobile ignition switch 19 is connected, automotive ignition system powers on and works, and as hung forward gear, getting off the brakes and step on the accelerator, automobile is in motoring condition.Therefore, only to connect and under source switch 12 on-state at automobile ignition switch 19, Vehicle Hydraulic Retarder control system could be energized work.Direct supply is done after voltage transformation and process through power circuit 2, for the sensor 13 of the inner each circuit of ECU (Electrical Control Unit) 11 and periphery and actr 14 are powered, lights the corresponding power supply instruction in relay indicating light 16 simultaneously.The necessary safety method such as reverse power connection, over voltage, under-voltage, ringing pulse suppression is also comprised in power circuit 2.
Microprocessor 1 is formed by the microprocessor chip of the automotive grade meeting the environmental conditions such as automotive temp, vibration operating needs, specifically can be realized by the micro controller system of automotive grade, digital signal processor, ARM microprocessor or application-specific integrated circuit ASIC.
Manual control/foot control driving switch signal 15, vehicle speed pulse 20 are by inputing to microprocessor 1 through digital input circuit 3 after shaping change-over circuit 7 shaping conversion.And for providing the hydrodynamic retarder controling parameters inputs such as cooling water temperature, operating fluid temperature, working fluid pressure to microprocessor 1, go back the sensor 13 of the input and output voltage of monitoring power supply circuit 2 by inputing to microprocessor 1 through simulated measurement input circuit 4 after shaping change-over circuit 7 shaping conversion.Manual control/foot control driving switch signal 15, vehicle speed pulse 20, sensor 13 signal directly can also be read by bus interface circuit 9 from vehicle-mounted computer.After microprocessor 1 receives coherent signal, analyzing and processing is carried out in inside, then exports.Meanwhile, the signal that microprocessor 1 exports amplifies rear drive through output driving circuit 6 and is arranged on relay indicating light 16 on automobile instrument panel, thus is chaufeur indicating operating status.
According to the difference of actr 14, can export and analog signal output by strobe pulse signal, when needing to adopt output of pulse signal, when select switch is connected pulse-width modulation circuit 5, microprocessor 1 output signal modulates pulsewidth through pulse-width modulation circuit 5, amplify rear drive actr 14 through output driving circuit 6 again, control actr 14 thus regulate working fluid pressure, and then regulating the braking force size of hydrodynamic retarder.When needing to adopt analog signal output, when analogue quantity output circuit 21 connected by select switch, microprocessor 1 output signal is after analogue quantity output circuit 21 transforms, rear drive actr 14 is amplified again through output driving circuit 6, control actr 14 thus regulate working fluid pressure, and then regulating the braking force size of hydrodynamic retarder.
In-system programming ISP can be carried out to microprocessor 1 by DLL (dynamic link library) circuit 8, not only for carrying out initial programming operation to the ECU (Electrical Control Unit) 11 of new production, also can to install and the ECU (Electrical Control Unit) 11 used on automobile is not carrying out in-system programming under disassembly status automobile, thus realize the upgrading of software, version updating and maintenance.And bus interface circuit 9 obtains the technical parameters such as speed of picking up the car, ABS mode of operation, throttle, brake except connecting running computer direct by CAN/VAN/Flexray bus, there is provided outside signal input, also can connect operation monitoring and trouble diagnosing that failure diagnostic apparatus carries out ECU (Electrical Control Unit) 11, yet directly obtain temperature by LIN bus connecting sensor 13, pressure and other parameters carries out computational analysis for microprocessor 1.Bus interface circuit 9 use bus type can be in the automobile bus such as CAN/VAN/LIN/Flexray any one or multiple.
The casing 10 of ECU (Electrical Control Unit) 11 adopts has the high pattern of water proof and dust proof grade, thus can be directly installed on outside operator's compartment by ECU (Electrical Control Unit) 11, on hydrodynamic retarder near change speed gear box and transmission shaft.The length of wire harness between ECU (Electrical Control Unit) 11 and sensor 13, actr 14 can be greatly reduced like this, improve the measuring precision, elevator system electromagnetic immunity ability, and strengthen the reliability of system.Telltale 17 can be arranged on automobile instrument panel, real-time display inner workings of the present utility model (as water temperature, oil temperature, pressure etc.), braking force size, alarm message, and by screen, driving switch is set to replace manual control/foot control driving switch 15, facilitate man-machine interaction.The fault diagnosis model of ECU (Electrical Control Unit) 11 is also directly entered by telltale 17.
The above; be only detailed description of the invention of the present utility model, it should be pointed out that any those of ordinary skill in the art are in the technical scope disclosed by the utility model; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.
Claims (5)
1. a Vehicle Hydraulic Retarder control system, it comprises the ECU (Electrical Control Unit) (11) be arranged in casing (10), the power circuit (2) being provided with microprocessor (1) in described ECU (Electrical Control Unit) (11) and powering for whole control system, manual control/Foot-controlled switch the signal (15) of automobile is connected with microprocessor (1) by digital input circuit (3) with vehicle speed pulse (20), sensor (13) for detecting hydrodynamic retarder controling parameters is connected with microprocessor (1) by simulated measurement input circuit (4), described microprocessor (1) mouth is connected with actr (14) by output driving circuit (6), it is characterized in that: described output driving circuit (6) front end is connected with select switch (22), pulse-width modulation circuit (5) and analogue quantity output circuit (21) is connected in parallel between described microprocessor (1) mouth and select switch (22).
2. a kind of Vehicle Hydraulic Retarder control system as claimed in claim 1, is characterized in that: described manual control/Foot-controlled switch signal (15), vehicle speed pulse (20), sensor (13) and the shaping change-over circuit (7) be connected with between digital input circuit (3) and simulated measurement input circuit (4) for the incoming signal shaping to microprocessor (1).
3. a kind of Vehicle Hydraulic Retarder control system as claimed in claim 1, is characterized in that: described microprocessor (1) mouth is connected with the telltale (17) for display working condition and relevant information.
4. a kind of Vehicle Hydraulic Retarder control system as claimed in claim 1, is characterized in that: described microprocessor (1) signal input part is connected with vehicle-mounted computer by bus interface circuit (9).
5. a kind of Vehicle Hydraulic Retarder control system as claimed in claim 1, is characterized in that: described output driving circuit (6) mouth is connected with relay indicating light (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520272345.2U CN204548075U (en) | 2015-04-28 | 2015-04-28 | Vehicle Hydraulic Retarder control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520272345.2U CN204548075U (en) | 2015-04-28 | 2015-04-28 | Vehicle Hydraulic Retarder control system |
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| Publication Number | Publication Date |
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| CN204548075U true CN204548075U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520272345.2U Active CN204548075U (en) | 2015-04-28 | 2015-04-28 | Vehicle Hydraulic Retarder control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867218A (en) * | 2016-03-31 | 2016-08-17 | 陕西法士特齿轮有限责任公司 | Hydraulic retarder CAN control system integrated in AT and method thereof |
| CN106427603A (en) * | 2016-07-15 | 2017-02-22 | 瑞安市旭晨电子有限公司 | Eddy current retarder controller |
| CN109976313A (en) * | 2019-04-22 | 2019-07-05 | 北京工业大学 | A kind of automatically controlled test macro and diagnostic device of liquid electricity retarder |
-
2015
- 2015-04-28 CN CN201520272345.2U patent/CN204548075U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867218A (en) * | 2016-03-31 | 2016-08-17 | 陕西法士特齿轮有限责任公司 | Hydraulic retarder CAN control system integrated in AT and method thereof |
| CN106427603A (en) * | 2016-07-15 | 2017-02-22 | 瑞安市旭晨电子有限公司 | Eddy current retarder controller |
| CN109976313A (en) * | 2019-04-22 | 2019-07-05 | 北京工业大学 | A kind of automatically controlled test macro and diagnostic device of liquid electricity retarder |
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