CN203115248U - ABC electromagnetic valve current control device based on L9347 chip - Google Patents
ABC electromagnetic valve current control device based on L9347 chip Download PDFInfo
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- CN203115248U CN203115248U CN 201320084776 CN201320084776U CN203115248U CN 203115248 U CN203115248 U CN 203115248U CN 201320084776 CN201320084776 CN 201320084776 CN 201320084776 U CN201320084776 U CN 201320084776U CN 203115248 U CN203115248 U CN 203115248U
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- electromagnetic valve
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model provides an ABS electromagnetic valve current control device based on an L9347 chip, and relates to an automobile ABS electronic control unit circuit. The ABS electromagnetic valve current control device comprises a master control module, a motor, an electromagnetic valve driving module, a power supply management module, a peripheral input/output module, a communication module and the like. The key point of the ABS electromagnetic valve current control device is the electromagnetic valve driving module. The ABS electromagnetic valve current control device is characterized in that a current control mode is used for driving an ABS pressure increasing valve coil, and the mode is based on the L9347 chip. The L9347 chip is used for driving a low power consumption low end driving switch of an inductive element (an electromagnetic valve) in an ABS, four independent channels are integrated, and two channels of the four channels can achieve the purpose that currents are stably adjusted from 250 mA to 2.25 A. The ABS electromagnetic valve current control device is used for driving the pressure increasing valve coil, the dynamic property is good, precision is high, the speed requirement of current dynamic change in an inductance environment can be met, response speed and control precision are improved, and good linear control is achieved.
Description
Technical field
The utility model relates to the circuit of ABS electronic control unit, and especially electromagnetic valve current drives the circuit of control.
Background technique
The ABS system finishes meticulous adjusting to wheel-braking cylinder pressure by solenoid valve and dump pump, to prevent that excessively braking makes wheel lock up.Because the ABS working environment is very abominable, be high efficiency and the reliability that guarantees the solenoid valve response, except with the parameter correlation of solenoid valve itself, the driving mode of solenoid valve has also directly determined high efficiency and the reliability that solenoid valve responds.
Drive solenoid valve with on-off mode and PWM control, though control strategy is fairly simple, but control is unstable, the retardation pressure non-linear growth, the pressure surge that brings of constantly moving when valve opens and closes fully also can cause certain noise, pressure surge brings bad pedal sense in the time of also can braking to the driver, and can not realize the linearity control to switch electromagnetic valve.Therefore the utility model is based on the Current Control of L9347 chip, by electromagnetic valve coil being applied the driving current signal of an adjustable size, has realized the linearity control of spool aperture, has improved speed of response and control accuracy.
The model utility content
Technical problem to be solved in the utility model provides a kind of circuit theory diagrams of ABS electronic control unit, it is characterized in that, adopt current system control switch solenoid valve, make the high efficiency of this solenoid-driven mode and reliability stronger, improved the control accuracy of system.This driving mode has not only guaranteed the linear change of the spool aperture of high-speed switch valve, has realized that also the linearity of pressure increases, and has reduced pressure build-up speed simultaneously again, makes that control is more stable, has realized more accurately linearity control.
The utility model is based on the ABS electromagnetic valve current control of L9347 chip, mainly comprise the main control module, motor and solenoid-driven module, power management module, peripheral input/output module, communication module, especially solenoid-driven module, it is characterized in that, employing is based on the ABS electromagnetic valve current control of L9347 chip, and the L9347 chip is exclusively used in and drives the ABS solenoid valve, comprises four passages, wherein the driving current of two passages is 5A, general as common switch, the driving current of other two passages is 2.5A, can be used as current regulator, output area is 250mA-2.25A, thereby 8 way solenoid valves among the ABS need use two L9347, and every can drive two-way pressure charging valve coil and two-way reduction valve coil, and L9347 can also monitor the output state of each passage, by ST1-ST4 port output, be used for real-time communication with the master chip feedback.
Description of drawings
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is further described in detail.
Fig. 1 is the driving circuit for electromagnetic valve schematic diagram.
Fig. 2 is 8 way solenoid valve coil circuit figure.
Fig. 3 is the public high-end drive circuit figure of electromagnetic valve coil.
Fig. 4 is XC2364B and TLE6212 communication interface figure.
Fig. 5 is the part connection diagram of master chip XC2364B.
Embodiment
As shown in Figure 1, the pressure charging valve coil is by the control of L9437 chip drives, and the L9347 chip is intelligent lower edge switch, is specifically designed to drive the ABS solenoid valve, comprise four passages, wherein the driving current of two passages is 5A, and generally as common switch, the driving current of other two passages is 2.5A, can be used as current regulator, output area is 250mA-2.25A, is that example describes with a slice, can be used to drive two-way reduction valve coil and two-way pressure charging valve coil.Reduction valve electromagnetic coil SOL1 and SOL2 in Q1 and the Q2 port difference connection diagram 2, pressure charging valve electromagnetic coil SOL3 and SOL4 in Q3 and the Q4 difference connection diagram 2; IN1-IN4 port links to each other with master chip XC2364B among Fig. 5, is used for receiving the control signal of master chip; ST1-ST4 port links to each other with master chip XC2364B among Fig. 5, is used for the state signal of each way solenoid valve is returned to master chip, is used for the output state of each passage of monitoring, and is used for real-time communication with the master chip feedback; The EN port is Enable Pin, is connected with master chip to can be used for the quick closedown chip; The TEST port enables for detecting; The CLK port is connected with master chip, is the external clock input; Vs is power supply end; VCC and vdd terminal mouth connect the 5V power supply.In like manner control reduction valve coil SOL5 and the SOL6 of ABS, and pressure charging valve coil SOL7 and SOL8.
As shown in Figure 2, the high-end external 12V of electromagnetic valve coil, and by two N-channel MOS pipe IPB80N04S3-H4 drivings, public high terminal voltage SOLCOM12V then can be provided, because solenoid valve is inductive load, the two ends of pressure charging valve 1N5817 type in parallel fly-wheel diode, during current vanishes in flowing through coil, will be by the discharge of fly-wheel diode loop after the outage, the aperture of valve changes comparatively mild, thereby makes control more stable; On the other hand, the induction electromotive force that coil produces consumes by the loop acting that diode and coil constitute, clump and protected the safety of other original paper in the circuit.Solenoid valve is that perceptual components and parts use with fly-wheel diode, can provide lasting electric current to load, to avoid sudden change, has played the effect of smoothing current, thereby makes driving more steadily efficient.
As shown in Figure 3, Figure 4, TLE6212 passes through the SPI serial communication for being used for the integrated IC of ABS with master chip XC2364B, implements to carry out the instruction of master chip, and by the shutoff of SOL_RL port controlling N-channel MOS pipe, thereby it is high-end to drive electromagnetic valve coil.
Along with the automobile active safety continuous advancement in technology, the application of electrohydraulic control technology on automobile active safety system is more and more, the Current Control of research high-speed switch electromagnetic valve, can satisfy the rate request of electric current dynamic change under the inductance environment, speed of response and control accuracy have been improved again, for critical effect has been played in the precision control of system.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. control based on the ABS electromagnetic valve current of L9347 chip, mainly comprise the main control module, motor and solenoid-driven module, power management module, peripheral input/output module, communication module, especially solenoid-driven module, it is characterized in that, employing is based on the ABS electromagnetic valve current control of L9347 chip, and the L9347 chip is exclusively used in and drives the ABS solenoid valve, comprises four passages, wherein the driving current of two passages is 5A, general as common switch, the driving current of other two passages is 2.5A, can be used as current regulator, output area is 250mA-2.25A, thereby 8 way solenoid valves among the ABS need use two L9347, and every can drive two-way pressure charging valve coil and two-way reduction valve coil, and L9347 can also monitor the output state of each passage, by ST1-ST4 port output, be used for real-time communication with the master chip feedback.
2. the ABS electromagnetic valve current control based on the L9347 chip according to claim 1 is characterized in that the pressure charging valve coil is controlled by the L9437 chip drives, thereby has realized the linear change of valve port opening.
3. the ABS electromagnetic valve current control based on the L9347 chip according to claim 2, it is characterized in that, the high-end external 12V of electromagnetic valve coil, and by two N-channel MOS pipe IPB80N04S3-H4 drivings, then can provide public high terminal voltage SOLCOM12V, because solenoid valve is inductive load, just need external reverse fly-wheel diode 1N5817, will be by the discharge of fly-wheel diode loop after the outage, the aperture of valve changes comparatively mild, thereby makes control more stable.
4. the ABS electromagnetic valve current control based on the L9347 chip according to claim 3 is characterized in that master chip is by the switch of SOL_RL port controlling N-channel MOS pipe, and then it is high-end to drive electromagnetic valve coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084776 CN203115248U (en) | 2013-02-25 | 2013-02-25 | ABC electromagnetic valve current control device based on L9347 chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084776 CN203115248U (en) | 2013-02-25 | 2013-02-25 | ABC electromagnetic valve current control device based on L9347 chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115248U true CN203115248U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320084776 Expired - Lifetime CN203115248U (en) | 2013-02-25 | 2013-02-25 | ABC electromagnetic valve current control device based on L9347 chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369211A (en) * | 2016-11-10 | 2017-02-01 | 无锡隆盛科技股份有限公司 | Anti-interference protecting mechanism of pressure release valve |
| CN110242786A (en) * | 2019-06-14 | 2019-09-17 | 中国神华能源股份有限公司 | The controller of servo electromagnetic valve, the control method and device for servo electromagnetic valve |
-
2013
- 2013-02-25 CN CN 201320084776 patent/CN203115248U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369211A (en) * | 2016-11-10 | 2017-02-01 | 无锡隆盛科技股份有限公司 | Anti-interference protecting mechanism of pressure release valve |
| CN110242786A (en) * | 2019-06-14 | 2019-09-17 | 中国神华能源股份有限公司 | The controller of servo electromagnetic valve, the control method and device for servo electromagnetic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205 No. 299, Guanggu Avenue, Donghu high tech Development Zone, Wuhan, Hubei Patentee after: Wuhan Yuanfeng automobile electronic control system Co.,Ltd. Address before: 430205 No. 299, Guanggu Avenue, Donghu high tech Development Zone, Wuhan, Hubei Patentee before: WUHAN YOUFIN ELECTRONIC CONTROL SYSTEM Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
|
| CX01 | Expiry of patent term |