CN203283284U - Gateway engine rotation speed signal processing circuit for electric power steering system - Google Patents
Gateway engine rotation speed signal processing circuit for electric power steering system Download PDFInfo
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- CN203283284U CN203283284U CN2013202235657U CN201320223565U CN203283284U CN 203283284 U CN203283284 U CN 203283284U CN 2013202235657 U CN2013202235657 U CN 2013202235657U CN 201320223565 U CN201320223565 U CN 201320223565U CN 203283284 U CN203283284 U CN 203283284U
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- speed signal
- rotation speed
- engine rotation
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Abstract
The utility model relates to the technical field of power electronics, in particular to a gateway engine rotation speed signal processing circuit for an electric power steering system. The gateway engine rotation speed signal processing circuit comprises an operational amplifier, a transient restraining diode, a voltage stabilizing diode, capacitors and resistors, wherein the other end of the third resistor is respectively connected with one end of the second capacitor and the in-phase input end of the operational amplifier, and the inverted input end of the operational amplifier is respectively connected with one end of the fourth resistor and one end of the fifth resistor. Compared with the prior art, the integrated operational amplifier is utilized to form a single-limit comparator. The operational amplifier can compare engine rotation speed signals with reference voltage and output the vehicle speed signals and the reference voltage, so that the electric power steering system in a low-grade vehicle can acquire the engine rotation speed signals. The transient restraining diode is additionally arranged on the circuit so as to achieve the surge and electrostatic protection function. The voltage stabilizing diode is additionally arranged at the in-phase input end of the operational amplifier so as to prevent input electric level signals from being too high to damage the operational amplifier.
Description
Technical field
The utility model relates to electric and electronic technical field, specifically a kind of engine rotational speed signal of gateway for electric boosting steering system modulate circuit.
Background technology
The EPSc system is the electric power servo steering system by a kind of advanced person of external exploitation.The EPSc system mainly comprises power supply, driver element, steering column, five parts of tween drive shaft and manual steering gear.Electronic control unit ECU is according to the signal of torque sensor and rotary angle transmitter, and determines the size and Orientation of power steering in conjunction with signals such as the speed of a motor vehicle, thus the operation of drive motor assisted diversion.Controller local area network's agreement when the EPSc system is dispatched from the factory and controller local area network's agreement of domestic car load are not mated, and the procotol of exploitation coupling needs a large amount of manpowers and time, and this can cause the mistake of domestic EPSc project process to be prolonged., in order to facilitate the debugging of initial stage EPSc system and car load associating, designed a kind of gateway circuit that is used for electric boosting steering system that can meet the communication need between different network protocol.But there is no engine rotational speed signal in the car load bus system of some low side vehicles,, in order to adapt to the low side vehicle, need a kind of gateway modulate circuit that is used for electric boosting steering system that can obtain engine rotational speed signal of design.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of gateway modulate circuit that is used for electric boosting steering system that can obtain engine rotational speed signal is provided.
in order to achieve the above object, the utility model has designed a kind of engine rotational speed signal of gateway for electric boosting steering system modulate circuit, comprise op amp, Transient Suppression Diode, zener diode, electric capacity and resistance, it is characterized in that: the plus earth of Transient Suppression Diode, the negative electrode of Transient Suppression Diode is connected with an end of resistance one, the other end of resistance one respectively with an end of resistance two, one end of electric capacity one, one end of the negative electrode of zener diode and resistance three connects, the other end of resistance three is connected with an end of electric capacity two and the in-phase input end of op amp respectively, the inverting input of op amp is connected with an end of resistance four and an end of resistance five respectively, the mouth of op amp is connected with the PT0 pin of micro-control unit and an end of resistance six respectively, the other end of the other end of resistance five and resistance six is connected with 5V power end VDD, the other end of resistance two, the other end of electric capacity one, the anode of zener diode, the other end ground connection of the other end of electric capacity two and resistance four.
The connection lead of one end of the negative electrode of described Transient Suppression Diode and resistance one is provided with the engine rotational speed signal collection terminal.
The utility model compared with the existing technology, adopt integrated transporting discharging to form single limit comparator, carried out the line output of relatively going forward side by side of engine rotational speed signal and VREF (Voltage Reference) by op amp, thereby make the electric power servo steering system in the low side vehicle can obtain engine rotational speed signal; Set up Transient Suppression Diode on circuit, thereby realize surge and antistatic protection function; In-phase input end at op amp is set up zener diode, prevents that the incoming level signal is too high and causes the damage of op amp.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
The specific embodiment
Now by reference to the accompanying drawings the utility model is described further.
Referring to Fig. 1, the utility model comprises op amp, Transient Suppression Diode, zener diode, electric capacity and resistance.the plus earth of Transient Suppression Diode D1, the negative electrode of Transient Suppression Diode D1 is connected with the end of resistance one R1, the other end of resistance one R1 respectively with the end of resistance two R2, the end of electric capacity one C1, the end of the negative electrode of zener diode D2 and resistance three R3 connects, the other end of resistance three R3 is connected with the end of electric capacity two C2 and the in-phase input end of op amp respectively, the inverting input of op amp is connected with the end of resistance four R4 and the end of resistance five R5 respectively, the mouth of op amp is connected with the PT0 pin of micro-control unit and the end of resistance six R6 respectively, the other end of the other end of resistance five R5 and resistance six R6 is connected with 5V power end VDD, the other end of resistance two R2, the other end of electric capacity one C1, the anode of zener diode D2, the other end ground connection of the other end of electric capacity two C2 and resistance four R4.
The model that op amp adopts Microchip Technology to produce is the chip of MCP6004, and the connection lead of the end of the negative electrode of Transient Suppression Diode D1 and resistance one R1 is provided with the engine rotational speed signal collection terminal.
The utility model is when work, and the engine rotational speed signal collection terminal has increased Transient Suppression Diode D1 and done surge and electrostatic defending.The magnitude of voltage of the inverting input of op amp is used for making reference voltage, the engine rotational speed signal of in-phase input end and the VREF (Voltage Reference) of inverting input compare, if the input voltage of in-phase input end is higher than VREF (Voltage Reference), the mouth of op amp is exported high level; If the input voltage of in-phase input end is less than VREF (Voltage Reference), the mouth output low level of op amp.Controller is by the collection to the high-low level frequency and calculate the acquisition engine rotational speed signal., in order to prevent the too high damage op amp of incoming level signal, increased zener diode D2 at in-phase input end and done voltage-stabilizing protection.
Claims (2)
1. gateway engine rotational speed signal modulate circuit that is used for electric boosting steering system, comprise op amp, Transient Suppression Diode, zener diode, electric capacity and resistance, it is characterized in that: the plus earth of Transient Suppression Diode (D1), the negative electrode of Transient Suppression Diode (D1) is connected with an end of resistance one (R1), the other end of resistance one (R1) respectively with an end of resistance two (R2), one end of electric capacity one (C1), one end of the negative electrode of zener diode (D2) and resistance three (R3) connects, the other end of resistance three (R3) is connected with an end of electric capacity two (C2) and the in-phase input end of op amp respectively, the inverting input of op amp is connected with an end of resistance four (R4) and an end of resistance five (R5) respectively, the mouth of op amp is connected with the PT0 pin of micro-control unit and an end of resistance six (R6) respectively, the other end of the other end of resistance five (R5) and resistance six (R6) is connected with 5V power end VDD, the other end of resistance two (R2), the other end of electric capacity one (C1), the anode of zener diode (D2), the other end ground connection of the other end of electric capacity two (C2) and resistance four (R4).
2. a kind of engine rotational speed signal of gateway for electric boosting steering system modulate circuit according to claim 1, it is characterized in that: the connection lead of an end of the negative electrode of described Transient Suppression Diode (D1) and resistance one (R1) is provided with the engine rotational speed signal collection terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202235657U CN203283284U (en) | 2013-04-27 | 2013-04-27 | Gateway engine rotation speed signal processing circuit for electric power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202235657U CN203283284U (en) | 2013-04-27 | 2013-04-27 | Gateway engine rotation speed signal processing circuit for electric power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203283284U true CN203283284U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013202235657U Expired - Fee Related CN203283284U (en) | 2013-04-27 | 2013-04-27 | Gateway engine rotation speed signal processing circuit for electric power steering system |
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| CN (1) | CN203283284U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656086A (en) * | 2017-08-31 | 2018-02-02 | 深圳中广核工程设计有限公司 | A kind of nuclear power station main pump tach signal monitoring system and method |
| CN110011666A (en) * | 2019-04-11 | 2019-07-12 | 上海剑桥科技股份有限公司 | Modulus signal conversion equipment for automobile |
| CN113056076A (en) * | 2021-03-12 | 2021-06-29 | 西安微电子技术研究所 | Phase inversion and electrostatic strengthening protection circuit |
-
2013
- 2013-04-27 CN CN2013202235657U patent/CN203283284U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656086A (en) * | 2017-08-31 | 2018-02-02 | 深圳中广核工程设计有限公司 | A kind of nuclear power station main pump tach signal monitoring system and method |
| CN107656086B (en) * | 2017-08-31 | 2020-05-15 | 深圳中广核工程设计有限公司 | Nuclear power station main pump rotating speed signal monitoring system and method |
| CN110011666A (en) * | 2019-04-11 | 2019-07-12 | 上海剑桥科技股份有限公司 | Modulus signal conversion equipment for automobile |
| CN113056076A (en) * | 2021-03-12 | 2021-06-29 | 西安微电子技术研究所 | Phase inversion and electrostatic strengthening protection circuit |
| CN113056076B (en) * | 2021-03-12 | 2023-08-04 | 西安微电子技术研究所 | Phase inversion and static reinforcement protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201821 Shanghai Jiading District City Yongsheng Road No. 2001 Patentee after: BOSCH Huayu Steering System Co., Ltd. Address before: 201821 Shanghai Jiading District City Yongsheng Road No. 2001 Patentee before: ZF Shanghai Steering Systems Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20210427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |