CN105216775A - A kind of environment protection type vacuum pump controller - Google Patents
A kind of environment protection type vacuum pump controller Download PDFInfo
- Publication number
- CN105216775A CN105216775A CN201510682025.9A CN201510682025A CN105216775A CN 105216775 A CN105216775 A CN 105216775A CN 201510682025 A CN201510682025 A CN 201510682025A CN 105216775 A CN105216775 A CN 105216775A
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- China
- Prior art keywords
- signal
- circuit
- mcu module
- electrically connected
- pressure sensor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of environment protection type vacuum pump controller of electronlmobil technical field of brake power assistance, comprise housing, circuit card, housing being provided with the compression fittings for docking expansion tank; Circuit card is provided with MCU module, output driving circuit, voltage detecting circuit, mu balanced circuit, circuit card be also provided with silicon piezoresistance type pressure sensor, for detect silicon piezoresistance type pressure sensor operating temperature temperature sensor, for amplify silicon piezoresistance type pressure sensor signal the first signal amplification circuit, for amplifying the secondary signal amplifying circuit of temperature sensor signal, the induction of silicon piezoresistance type pressure sensor is rectified passage and is attached to feeder connection place; During work, the temperature signal that MCU module can produce according to temperature sensor revises pressure signal.The pressure in expansion tank can be detected very exactly, and when the pressure in expansion tank can trigger vaccum pump motor automatically higher than during setting pressure.
Description
Technical field
The present invention relates to electronlmobil technical field of brake power assistance, particularly a kind of controller for vacuum pump.
Background technology
Electronlmobil brake assist system is by vacuum pump, expansion tank, pressure switch, form for the controller controlling vacuum pump.The pressure detected in expansion tank when pressure switch just sends signal higher than during setting value, after controller for vacuum pump receives the signal of pressure switch, switch on power to vacuum pump, expansion tank vacuumizes by vacuum pump, make pressure in expansion tank not higher than setting value, so that the carrying out smoothly of brake process.Air pump power supply is cut off, until again receive energizing signal after delaying time of controller a period of time.
Because pressure switch is mechanical switch, pressure signal detects inaccurate, and just an on-off signal, can not detect the concrete pressure in expansion tank, be unfavorable for the accurate control of pressure.
Summary of the invention
The object of this invention is to provide a kind of environment protection type vacuum pump controller, the pressure in expansion tank can be detected very exactly, and when the pressure in expansion tank can trigger vaccum pump motor automatically higher than during setting pressure.
The object of the present invention is achieved like this: a kind of environment protection type vacuum pump controller, comprise housing, be arranged on the circuit card of housing cavity, described housing is provided with connect with housing cavity, for docking the compression fittings of expansion tank, described compression fittings is provided with the passage for connecting housing cavity and expansion tank, described circuit card is provided with MCU module, described circuit card is also provided with that its input end and MCU module signal output part be electrically connected, the output driving circuit that its mouth and vaccum pump motor input end are electrically connected, described circuit card is also provided with that its mouth and MCU module signal input part be electrically connected, the voltage detecting circuit that its input end and direct supply are electrically connected, described circuit card is also provided with that its mouth and MCU module energy input end be electrically connected, the mu balanced circuit that its input end and direct supply are electrically connected, described circuit card is also provided with the silicon piezoresistance type pressure sensor that can produce pressure signal, be equipped with silicon piezoresistance type pressure sensor and temperature sensor for detecting silicon piezoresistance type pressure sensor operating temperature, for amplifying the first signal amplification circuit of silicon piezoresistance type pressure sensor signal, for amplifying the secondary signal amplifying circuit of temperature sensor signal, described first signal amplification circuit, the mouth of secondary signal amplifying circuit and the signal input part of MCU module are electrically connected, the induction of described silicon piezoresistance type pressure sensor is rectified passage and is attached to feeder connection place, during work, the temperature signal that described MCU module can produce according to temperature sensor revises pressure signal.
When the present invention works, when silicon piezoresistance type pressure sensor detects that pressure in expansion tank is higher than preset value, the pressure signal that silicon piezoresistance type pressure sensor generates reaches MCU module after the amplification of the first signal amplification circuit, control signal exports by MCU module, control signal is passed to vaccum pump motor through output driving circuit, vaccum pump motor starts and reduces the pressure in expansion tank, pressure in expansion tank can be dropped in certain limit, when the pressure that silicon piezoresistance type pressure sensor detects in expansion tank is less than preset value and is in certain limit, MCU module gives the signal of vaccum pump motor stall by output driving circuit, vaccum pump motor stall.
Compared with prior art, beneficial effect of the present invention is: the real-time signal of timely acquisition buffer tank internal pressure is convenient in the setting of silicon piezoresistance type pressure sensor, need not time delay again, the action of vaccum pump motor is directly decided by the pressure size in expansion tank, accuracy rate, sensitivity, reliability are improved, energy consumption reduces greatly, and the service life of vacuum pump can be guaranteed; Start vaccum pump motor in time by the process of MCU module, make vacuum pump reduce pressure in expansion tank in time, the pressure in expansion tank can be dropped in certain limit, be convenient to carrying out smoothly of brake process; The setting of temperature sensor is the operating temperature in order to detect silicon piezoresistance type pressure sensor, temperature signal can be inputted MCU module, then MCU module can according to temperature signal correction pressure signal, to ensure that pressure signal that MCU module exports can pressure exactly in corresponding expansion tank.
As a further improvement on the present invention, described circuit card is also provided with alarm module, described alarm module and MCU module signal output part are electrically connected, when MCU module monitors fault and breakdown signal is outputted to alarm module, described alarm module is in running order, if trouble free signal, described alarm module quits work.Further enhancing alert capability.
Accompanying drawing explanation
Fig. 1 is control planning schematic diagram of the present invention.
Fig. 2 is assembling schematic diagram of the present invention.
Wherein, 1 silicon piezoresistance type pressure sensor, 2 temperature sensors, 3MCU module, 4 housings, 5 circuit cards, 6 compression fittingss, 6a passage, 7 output driving circuits, 8 secondary signal amplifying circuits, 9 first signal amplification circuits, 10 direct supplys, 11 vaccum pump motors, 12 voltage detecting circuits, 13 mu balanced circuits, 14 alarm modules.
Detailed description of the invention
As shown in Figure 1-2, a kind of environment protection type vacuum pump controller, comprise housing 4, be arranged on the circuit card 5 of housing 4 inner chamber, housing 4 is provided with connect with housing 4 inner chamber, for docking the compression fittings 6 of expansion tank, compression fittings 6 is provided with the passage 6a for connecting housing 4 inner chamber and expansion tank, circuit card 5 is provided with MCU module 3, circuit card 5 is also provided with that its input end and MCU module 3 signal output part be electrically connected, the output driving circuit 7 that its mouth and vaccum pump motor 11 input end are electrically connected, circuit card 5 is also provided with that its mouth and MCU module 3 signal input part be electrically connected, the voltage detecting circuit 12 that its input end and direct supply 10 are electrically connected, circuit card 5 is also provided with that its mouth and MCU module 3 energy input end be electrically connected, the mu balanced circuit 13 that its input end and direct supply 10 are electrically connected, circuit card 5 is also provided with the silicon piezoresistance type pressure sensor 1 that can produce pressure signal, and temperature sensor 2 for detect silicon piezoresistance type pressure sensor 1 operating temperature equipped with silicon piezoresistance type pressure sensor 1, for amplifying the first signal amplification circuit 9 of silicon piezoresistance type pressure sensor 1 signal, for amplifying the secondary signal amplifying circuit 8 of temperature sensor 2 signal, first signal amplification circuit 9, the mouth of secondary signal amplifying circuit 8 and the signal input part of MCU module 3 are electrically connected, the induction of silicon piezoresistance type pressure sensor 1 is rectified passage 6a and is attached to passage 6a entrance, during work, the temperature signal that MCU module 3 can produce according to temperature sensor 2 revises pressure signal.
During work, when silicon piezoresistance type pressure sensor 1 detects that pressure in expansion tank is higher than preset value, the pressure signal that silicon piezoresistance type pressure sensor 1 generates reaches MCU module 3 after the amplification of the first signal amplification circuit 9, control signal exports by MCU module 3, control signal is passed to vaccum pump motor 11 through output driving circuit 7, vaccum pump motor 11 starts and reduces the pressure in expansion tank, pressure in expansion tank can be dropped in certain limit, when the pressure that silicon piezoresistance type pressure sensor 1 detects in expansion tank is less than preset value and is in certain limit, MCU module 3 gives the signal of vaccum pump motor 11 stall by output driving circuit 7, vaccum pump motor 11 stall.
Foregoing circuit plate 5 is also provided with alarm module 14, alarm module 14 and MCU module 3 signal output part are electrically connected, and when MCU module 3 monitors fault and breakdown signal is outputted to alarm module 14, alarm module 14 is in running order, if trouble free signal, alarm module 14 quits work.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (2)
1. an environment protection type vacuum pump controller, comprise housing (4), be arranged on the circuit card (5) of housing (4) inner chamber, described housing (4) is provided with connect with housing (4) inner chamber, for docking the compression fittings (6) of expansion tank, described compression fittings (6) is provided with the passage (6a) for connecting housing (4) inner chamber and expansion tank, described circuit card (5) is provided with MCU module (3), described circuit card (5) is also provided with that its input end and MCU module (3) signal output part be electrically connected, the output driving circuit (7) that its mouth and vaccum pump motor (11) input end are electrically connected, described circuit card (5) is also provided with that its mouth and MCU module (3) signal input part be electrically connected, the voltage detecting circuit (12) that its input end and direct supply (10) are electrically connected, described circuit card (5) is also provided with that its mouth and MCU module (3) energy input end be electrically connected, the mu balanced circuit (13) that its input end and direct supply (10) are electrically connected, it is characterized in that: described circuit card (5) is also provided with the silicon piezoresistance type pressure sensor (1) that can produce pressure signal, and temperature sensor (2) for detect silicon piezoresistance type pressure sensor (1) operating temperature equipped with silicon piezoresistance type pressure sensor (1), for amplifying first signal amplification circuit (9) of silicon piezoresistance type pressure sensor (1) signal, for amplifying the secondary signal amplifying circuit (8) of temperature sensor (2) signal, described first signal amplification circuit (9), the mouth of secondary signal amplifying circuit (8) and the signal input part of MCU module (3) are electrically connected, the induction of described silicon piezoresistance type pressure sensor (1) is rectified passage (6a) and is attached to passage (6a) entrance, during work, the temperature signal that described MCU module (3) can produce according to temperature sensor (2) revises pressure signal.
2. a kind of environment protection type vacuum pump controller according to claim 1, it is characterized in that: described circuit card (5) is also provided with alarm module (14), described alarm module (14) and MCU module (3) signal output part are electrically connected, when MCU module (3) monitors fault and breakdown signal is outputted to alarm module (14), described alarm module (14) is in running order, if trouble free signal, described alarm module (14) quits work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682025.9A CN105216775A (en) | 2015-10-21 | 2015-10-21 | A kind of environment protection type vacuum pump controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682025.9A CN105216775A (en) | 2015-10-21 | 2015-10-21 | A kind of environment protection type vacuum pump controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105216775A true CN105216775A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510682025.9A Pending CN105216775A (en) | 2015-10-21 | 2015-10-21 | A kind of environment protection type vacuum pump controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121986A (en) * | 2016-08-22 | 2016-11-16 | 华景传感科技（无锡）有限公司 | A kind of vacuum pump electronic controller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002046011A1 (en) * | 2000-12-08 | 2002-06-13 | Lucas Automotive Gmbh | Sensor system for a vacuum brake booster |
| CN204136977U (en) * | 2014-09-28 | 2015-02-04 | 江苏奥新新能源汽车有限公司 | A kind of brake system of electronlmobil |
| CN204452428U (en) * | 2015-01-13 | 2015-07-08 | 东方久乐汽车电子（上海）有限公司 | A kind of vacuum pump of electric automobile controller of internally provided with vacuum pump baroceptor |
| CN204567302U (en) * | 2015-01-13 | 2015-08-19 | 东方久乐汽车电子（上海）有限公司 | A kind of vacuum pump of electric automobile controller with temperature protection function |
| CN205034106U (en) * | 2015-10-21 | 2016-02-17 | 扬州金铭电子科技有限公司 | Environment -friendly vacuum pump controller |
-
2015
- 2015-10-21 CN CN201510682025.9A patent/CN105216775A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002046011A1 (en) * | 2000-12-08 | 2002-06-13 | Lucas Automotive Gmbh | Sensor system for a vacuum brake booster |
| CN204136977U (en) * | 2014-09-28 | 2015-02-04 | 江苏奥新新能源汽车有限公司 | A kind of brake system of electronlmobil |
| CN204452428U (en) * | 2015-01-13 | 2015-07-08 | 东方久乐汽车电子（上海）有限公司 | A kind of vacuum pump of electric automobile controller of internally provided with vacuum pump baroceptor |
| CN204567302U (en) * | 2015-01-13 | 2015-08-19 | 东方久乐汽车电子（上海）有限公司 | A kind of vacuum pump of electric automobile controller with temperature protection function |
| CN205034106U (en) * | 2015-10-21 | 2016-02-17 | 扬州金铭电子科技有限公司 | Environment -friendly vacuum pump controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121986A (en) * | 2016-08-22 | 2016-11-16 | 华景传感科技（无锡）有限公司 | A kind of vacuum pump electronic controller |
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Application publication date: 20160106 |