CN102514485B - A kind of electronic throttle driving circuit - Google Patents
A kind of electronic throttle driving circuit Download PDFInfo
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- CN102514485B CN102514485B CN201110357206.6A CN201110357206A CN102514485B CN 102514485 B CN102514485 B CN 102514485B CN 201110357206 A CN201110357206 A CN 201110357206A CN 102514485 B CN102514485 B CN 102514485B
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- lower computer
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- driving circuit
- electronic throttle
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Abstract
The present invention relates to a kind of electronic throttle driving circuit, comprise lower computer, it is characterized in that, described lower computer connects a D/A converter by serial port, and this D/A converter is provided with the doubleway output end for driving E-gas.Because lower computer is early deposited in the product, only need utilize its residue pin, connect one piece of DA chip, namely realize the driving to E-gas, together circuit integrated, save cost, extended function, follow the tracks of the progress of technology.
Description
Technical field
The present invention relates to a kind of electronic throttle driving circuit.
Background technology
Fast-developing considerable part along with auto-industry all achieves E-gas at the driving engine produced and drives.E-gas drives because its control is accurate, quick, reliable, convenient to become the gesture that can not keep off.Also essential with the Motronic control maps accelerator drive circuit that dynamometer is supporting.Present stage generally adopts digital control system control D/A board to export analog quantity or controls Adam's module simulation amount makes Motronic control maps accelerator drive circuit, as shown in Figure 1.This mode, needs industrial computer to add to pretend to answer board, accounts for larger volume and increases cost.
Summary of the invention
The object of this invention is to provide a kind of electronic throttle driving circuit, the basis of existing dynamometer product realizes, in order to solve the high problem of the large cost of prior art volume.
For achieving the above object, the solution of the present invention is: a kind of electronic throttle driving circuit, comprises lower computer, it is characterized in that, described lower computer connects a D/A converter by serial port, and this D/A converter is provided with the doubleway output end for driving E-gas.
Described D/A converter is provided with two reference voltage input of corresponding described doubleway output, described two reference voltage input connect voltage reference and produce circuit, described voltage reference produces circuit and is connected on power end, comprise the series resistance (R3) of connecting successively from power end, voltage reference integrated package TL431, first divider resistance (R1) and the second divider resistance (R2), this second divider resistance (R2) connects the R end of described voltage reference integrated package TL431, described two reference voltage input one of them connect described voltage reference integrated package TL431 R end, another is connected to the first divider resistance (R1), between second divider resistance (R2).Described lower computer is DSPIC30F6014A.Described D/A converter is MAX5322EAI.Described serial port is SPI serial port.
Because lower computer is early deposited in the product, only need utilize its residue pin, connect one piece of DA chip, namely realize the driving to E-gas, together circuit integrated, save cost, extended function, follow the tracks of the progress of technology.
Lower computer DSPIC30F6014A exports PWM to change into and sends digital quantity to D/A changer input end by serial ports SPI, through D/A changer MAX5322 process, digital quantity being become a road is 0-5V, another road is that the two-way analog quantity of 0-2.5V gives E-gas, controls driving engine and normally runs.Thus not only simplify circuit, greatly reduce original cost, also can meet the requirement of different E-gas simultaneously according to the different adjustment setting of E-gas and Circuit tuning parameter.
Accompanying drawing explanation
Fig. 1 is existing driving circuit block diagram;
Fig. 2 is driving circuit block diagram of the present invention;
Fig. 3 is driving circuit principle figure of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
A kind of Motronic control maps accelerator drive circuit be made up of MAX5322 is as shown in Figure 2,3 made up of input circuit, voltage reference generation circuit, D/A translation circuit, output circuit, feed circuit module.
Input circuit: be made up of serial port SPI port, the pin that the clock of the SPI2 port of DSPIC30F6014A, data export, SS2 pin is corresponding to MAX5322 is connected, and is linked to be serial communication mode.
Voltage reference circuit: D/A converter MAX5322EAI is provided with two reference voltage input REFA of corresponding doubleway output, REFB, described two reference voltage input connect voltage reference and produce circuit, voltage reference produces circuit and is connected on power supply, comprise the series resistance R3 connected successively from power end, voltage reference integrated package TL431, divider resistance R1, R2, R2 connects the R end of voltage reference integrated package TL431, REFB connects the R end of described voltage reference integrated package TL431, be 2.5 reference voltages, as the DAC reference input of B delivery channel, REFA is connected to divider resistance R1, between R2, as the DAC reference input of A delivery channel.Cond C7 be connected in parallel on voltage reference integrated package TL421 A end and between K holds.
D/A translation circuit: be made up of MAX5322EAI, it is binary channel, bipolarity, 12, serial, and single bipolarity is controlled, bipolarity ± 5V---± 10V voltage exports, unipolarity+5V---DAC that+10V voltage exports.The requirement of actuating unit precision and unipolarity and amplitude can be met.
Described output circuit is made up of OUTA, OUTB of MAX5322 and Motronic control maps accelerator drive circuit module.The input end of 0-2.5V and 0-5V of the corresponding Motronic control maps accelerator drive circuit of OUTA, OUTB difference.
Feed circuit module: by power input V
dD,v
cC,v
sS,and DGND, SGNDA, SGNDB, AGND and cond C1-C6 form.V
dDfor digital power end, V
cC,v
sSfor positive and negative analog electrical source, DGND, AGND are respectively the ground of digital power, and SGNDA, SGNDB are respectively the ground of DAC output end voltage passage OUTA, OUTB.Cond C1-C6 composition is parallel to V respectively
dD,v
cC,v
sSwith DGND, AGND, anti-interference filtration is carried out to power supply, to improve Power supply performance.
Shown in Fig. 3, in example, 12 single and double lines export D/A converter is MAX5322EAI, is the control of DSPIC30F6014A by lower computer microcontroller.Lower computer DSPIC30F6014A is by 6 pin (SCK2) of serial port SPI2 and the SCK(10 pin of MAX5322EAI) be connected, clock is connected together; 8 pin (SDO2) of port SPI2 and the DIN(11 pin of MAX5322EAI) be connected, allow lower computer setting value digital quantity be sent to D/A and carry out conversion output; 7 pin (SD12) of port SPI2 and the D0ut(9 pin of MAX5322EAI) be connected, lower computer also can check the digital quantity that D/A exports if desired; 10 pin (SS2) of port SPI2 and the CS(12 pin of MAX5322EAI) be connected, allow lower computer carry out sheet choosing to D/A, during output low level, DIN pin could accept the output signal of lower computer, just can choose MAX5322EAI.The RC14(60 pin of lower computer) with the CLR(6 pin of MAX5322EAI) be connected, during low level, DAC exports zero setting; The RD1(61 pin of lower computer) with the UNI/BIPB(17 pin of MAX5322EAI) be connected, high and low logic level, determines passage A(DACA) output list bipolarity and modulating output scope; The RD3(63 pin of lower computer) with the UNI/BIPB(3 pin of MAX5322EAI) be connected, high and low logic level, determines output list bipolarity and the modulating output scope of channel B (DACB); The RD2(62 pin of lower computer) with the SHDN(4 pin of MAX5322EAI) be connected, Low level effective, control D/A buffer zone turns off or normally works; The RC13(59 pin of lower computer) with the LDAC(5 pin of MAX5322EAI) be connected, control during logic level DAC register input information.Wherein cond C1-2 be connected on negative supply V
sSand between AGND two ends, cond C3-4 is also being connected on positive supply V
dDand between AGND two ends, cond C5-6 be connected on power supply V
cCand between DGND two ends, be digital power filtering.Be connected, for being connected together with AGND in analog to SGNGA, SGNDB and load.The respective channel of OUTA, OUTB difference sending and receiving motivation electronic throttle driving circuit.Voltage reference integrated package TL431 and resistor R3 is connected between 15V and ground AGND after connecting, to obtain the magnitude of voltage of stable 2.5V.Cond C between A, K pin of TL431, for absorbing the surge voltage pulse from power supply.The R pin of TL431 is held with REFB and is connected.The DAC reference input of supply B delivery channel; The R of TL431 holds and exports the reference voltage value of 2.5V and carry out point pressure side and hold with REFA and be connected by R1, R2, makes the DAC reference input of A delivery channel.When visible 61 pin when lower computer, 63 pin send logic high, 3 pin, 17 pin of MAX5322EAI are set high, and 18 pin OUTA, 25 pin OUTB the voltage signal of output cathode will go the aperture controlling E-gas.Because lower computer is early deposited in the product, make use of its remaining pin and can realize the functions such as clearing, single bipolarity, sheet choosing and can realize the functions such as single bipolarity DAC output, sheet choosing, register access, serial data output.Achieve circuit integrating simultaneously, saved cost, extended function, follow the tracks of the progress of technology.
Owing to have employed MAX5322EAI D/A converter, achieve the multi-functional driving of system, motivation actuating unit can be realized and drive engine mechanical throttle, the E-gas that also can be driven by this circuit direct electron voltage output signal, realize entire system, widen system;
Circuit reduction circuit system, cost is low.Eliminated D/A board and Adam's module, original cost is not enough original 20%;
D/A converter MAX5322EAI, has binary channel, bipolarity, 12, serial, and single bipolarity is controlled, bipolarity 0---± 5V, and 0---± 10V, unipolarity 0---+5V, 0------+10V voltage exports.The requirement of actuating unit precision and polarity and amplitude can be met, and clearing can be realized, the function such as reversal, sheet select register to deposit, withdraw, serial data output, flexibly, function is extensive in change, can realize all requirements of E-gas actr.
Claims (4)
1. an electronic throttle driving circuit, comprise lower computer, described lower computer connects a D/A converter by serial port, this D/A converter is provided with the doubleway output end for driving E-gas, it is characterized in that, described D/A converter is provided with two reference voltage input of corresponding described doubleway output end, described two reference voltage input connect voltage reference and produce circuit, described voltage reference produces circuit and is connected on power end, comprise the series resistance (R3) of connecting successively from power end, voltage reference integrated package TL431, first divider resistance (R1) and the second divider resistance (R2), this second divider resistance (R2) connects the R end of described voltage reference integrated package TL431, described two reference voltage input one of them connect described voltage reference integrated package TL431 R end, another is connected to the first divider resistance (R1), between second divider resistance (R2).
2. a kind of electronic throttle driving circuit according to claim 1, is characterized in that, described lower computer is DSPIC30F6014A.
3. a kind of electronic throttle driving circuit according to claim 2, is characterized in that, described D/A converter is MAX5322EAI.
4. a kind of electronic throttle driving circuit according to claim 3, is characterized in that, described serial port is SPI serial port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110357206.6A CN102514485B (en) | 2011-11-12 | 2011-11-12 | A kind of electronic throttle driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110357206.6A CN102514485B (en) | 2011-11-12 | 2011-11-12 | A kind of electronic throttle driving circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102514485A CN102514485A (en) | 2012-06-27 |
| CN102514485B true CN102514485B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110357206.6A Active CN102514485B (en) | 2011-11-12 | 2011-11-12 | A kind of electronic throttle driving circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785222A (en) * | 1986-08-22 | 1988-11-15 | Vdo Adolf Schindling Ag | Apparatus for actuation of a setting element |
| DE3725750A1 (en) * | 1987-08-04 | 1989-02-23 | Vdo Schindling | Multiprocessor system e.g. for electronic fuel injection device - has parallel processors coupled via respective operational amplifiers to common output stage |
| CN201503258U (en) * | 2009-09-30 | 2010-06-09 | 西安长密汽车电子科技有限公司 | Non-contact electronic accelerator pedal position sensor for automobile |
| CN201884134U (en) * | 2010-09-26 | 2011-06-29 | 深圳市卡妙思电子科技有限公司 | Automobile electronic accelerator control conversion device and conversion system |
| CN201955235U (en) * | 2010-12-30 | 2011-08-31 | 中国第一汽车集团公司 | Multifunctional electronic accelerator simulator |
| CN202357875U (en) * | 2011-11-12 | 2012-08-01 | 凯迈(洛阳)机电有限公司 | Drive circuit of electronic accelerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009138725A (en) * | 2007-12-05 | 2009-06-25 | Pivot Corp | Accelerator sensor signal conversion equipment |
-
2011
- 2011-11-12 CN CN201110357206.6A patent/CN102514485B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785222A (en) * | 1986-08-22 | 1988-11-15 | Vdo Adolf Schindling Ag | Apparatus for actuation of a setting element |
| DE3725750A1 (en) * | 1987-08-04 | 1989-02-23 | Vdo Schindling | Multiprocessor system e.g. for electronic fuel injection device - has parallel processors coupled via respective operational amplifiers to common output stage |
| CN201503258U (en) * | 2009-09-30 | 2010-06-09 | 西安长密汽车电子科技有限公司 | Non-contact electronic accelerator pedal position sensor for automobile |
| CN201884134U (en) * | 2010-09-26 | 2011-06-29 | 深圳市卡妙思电子科技有限公司 | Automobile electronic accelerator control conversion device and conversion system |
| CN201955235U (en) * | 2010-12-30 | 2011-08-31 | 中国第一汽车集团公司 | Multifunctional electronic accelerator simulator |
| CN202357875U (en) * | 2011-11-12 | 2012-08-01 | 凯迈(洛阳)机电有限公司 | Drive circuit of electronic accelerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102514485A (en) | 2012-06-27 |
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Address after: 471003 Luoyang, Jianxi Province, Li Chun West Road, No. 18, No. Applicant after: CAMA (Luoyang) Electromechanic Co., Ltd. Address before: 471003 No. 18 Li Chun Xi Road, hi tech Development Zone, Henan, Luoyang Applicant before: CAMA (Luoyang) Electromechanic Co., Ltd. |
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