CN104074639A - Direct current motor EGR valve controller - Google Patents
Direct current motor EGR valve controller Download PDFInfo
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- CN104074639A CN104074639A CN201410340628.6A CN201410340628A CN104074639A CN 104074639 A CN104074639 A CN 104074639A CN 201410340628 A CN201410340628 A CN 201410340628A CN 104074639 A CN104074639 A CN 104074639A
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Abstract
The invention discloses a direct current motor EGR valve controller which comprises a master chip module, a power module, a direct current motor EGR valve control module, a sensor input signal processing module, a communication module, a preheating control module and an auxiliary control module. Signals obtained by the sensor input signal processing module are logically processed through the master chip module, corresponding signals are output to control the control modules to work normally and logically, so that the opening degree of a direct current motor EGR valve is accurately controlled, and the direct current motor EGR valve is made to work or tested.
Description
Technical field
The present invention relates to DC control technology field, particularly direct current generator EGR valve control in a kind of engine exhaust emission gas recirculation system.
Background technique
Direct current generator EGR Fa Shi domestic enterprise is one of state's four automatically controlled products of domestic car load (motor) factory exploitation, its principle is the straight line motion that rotatablely moving of motor is converted into valve switch, carry out the flow of control engine cycle gas by the folding of valve, then import to engine intake, thereby reduce indoor temperature and the oxygen content of engine combustion, and then reduced the discharge of pollutant NOx.Compare pneumatic EGR valve, direct current generator EGR valve has fast response time, controls accurately, without features such as vacuum sources.
At present, manufacture field at direct current generator EGR valve, also there is no the controller designing for controlling direct current generator EGR valve specially, in the test and using process of direct current generator EGR, be badly in need of a kind of controller and can control well direct current generator EGR valve and detect or work by specific requirement.
Summary of the invention
The object of this invention is to provide a kind of aperture size that can accurately control direct current generator EGR valve, and the controller that can control the normal work of direct current generator EGR valve or it is tested.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
A kind of direct current generator EGR valve control, comprise master chip module, power module, control module, sensor input signal puocessing module and the communication module being connected with diagnostic equipment or computer, described sensor input signal puocessing module is used for the active transducer signal of collection, passive transducer signal, d. c. voltage signal and tach signal to process, and exports to master chip module; The signal that master chip module obtains according to sensor input signal puocessing module is exported corresponding SC sigmal control control module after via master chip module logical process by setting logic working; Control module is for the driving signal to direct current generator EGR valve output different frequency to be tested and dutycycle; Power module is respectively sensor input signal puocessing module and master chip module provides working power; Communication module is realized the communication connection between master chip module and diagnostic equipment or computer.
The concrete structure of master chip module of the present invention is: described master chip module comprises single-chip microcomputer, chip external memory, electrical signal sample circuit, clock circuit and the first eliminator, described chip external memory and single-chip microcomputer interconnection, be used for expanding memory data output, clock circuit is for providing CLK clock to single-chip microcomputer; The input end of described single-chip microcomputer is through the output terminal of the first eliminator connecting sensor input signal puocessing module, and the input end of single-chip microcomputer is also connected with electrical signal sample circuit, the input end of the output terminal link control module of single-chip microcomputer.
The concrete structure of control module of the present invention is: described control module comprises signal drive circuit, over-current protection circuit and the second eliminator; Described signal drive circuit is to driving signal and the clockwise and anticlockwise signal of direct current generator EGR valve output different frequency to be tested and dutycycle; signal drive circuit connects the output terminal of power module through over-current protection circuit, signal drive circuit also connects the output terminal of single-chip microcomputer in master chip module through the second eliminator.
The concrete structure of sensor input signal puocessing module of the present invention is: described sensor input signal puocessing module comprises independent active transducer signal processing circuit, passive transducer signal processing circuit, d. c. voltage signal processing circuit and the rotary speed signal sensor processing circuit arranging; Described active transducer signal processing circuit comprises current-limiting resistance R1, filter capacitor C1, pull down resistor R2, after described filter capacitor C1 and pull down resistor R2 are connected in parallel, is serially connected between the output terminal and ground of current-limiting resistance R1; Described passive transducer signal processing circuit comprises current-limiting resistance R3, divider resistance R4 and filter capacitor C2 and C3, described divider resistance R4 and filter capacitor C3 are connected in series between the input end and ground of current-limiting resistance R3, lower end connection+5V of divider resistance R4, filter capacitor C2 is connected between the output terminal and ground of current-limiting resistance R3; Described d. c. voltage signal processing circuit comprises current-limiting resistance R5, filter capacitor C4, pull down resistor R6, voltage-stabiliser tube Z1 and waveform shaping chip U1, described current-limiting resistance R5 and waveform shaping chip U1 are connected in series, and after filter capacitor C4, pull down resistor R6 and voltage-stabiliser tube Z1 are connected in parallel, are serially connected between the output terminal and ground of current-limiting resistance R5; Described rotary speed signal sensor processing circuit comprises voltage comparator U1A, integrated reverser U3A, photo coupler U2, capacitor C 5 and resistance R 7 ~ R11; The positive input terminal of voltage comparator U1A connects tach signal input end through resistance R 7, the positive input terminal of voltage comparator U1A is also through capacitor C 5 ground connection, the negative input end of voltage comparator U1A connects Vcc through resistance R 8, the negative input end of voltage comparator U1A is also through resistance R 9 ground connection, the output terminal of voltage comparator U1A connects the input end of integrated reverser U3A through photo coupler U2, the output terminal output speed signal of integrated reverser U3A; The output terminal of the output terminal of voltage comparator U1A also connects Vcc through resistance R 10, and the input end of integrated reverser U3A meets VBAT through resistance R 11.
The concrete structure of power module of the present invention is: described power module comprises power supply master chip, protective circuit, capacitor filter and power signal sampling circuit; The input end of described power supply master chip connects power supply through protective circuit, and power supply master chip is exported two-way power supply simultaneously and is respectively master chip module and the power supply of sensor input signal puocessing module; Protective circuit realizes anti-electric current, voltage and anti-reverse protective function; Whether power signal sampling circuit is operated in normal range (NR) for the power supply signal of output is sampled and detected power supply master chip.
Improvement of the present invention is: the output terminal of described master chip module is also connected with warm-up control module, and described warm-up control module comprises pliotron Q1 and sustained diode 1; The base stage of described pliotron Q1 connects the output terminal of master chip module, and the collector electrode of pliotron Q1 connects the positive pole of sustained diode 1, the grounded-emitter connection of pliotron Q1; Very signal output part of the current collection of pliotron Q1.
Owing to having adopted above technological scheme, the invention technological progress is as follows.
The present invention is for the control of automobile or engineering vehicle direct current generator EGR valve, by this controller, the SC sigmal control direct current generator EGR valve control module work obtaining according to sensor input signal puocessing module, and then the flow of control engine waste gas, reduced the discharge of pollutant; By this controller, also can test direct current generator EGR valve, the properties of EGR valve is monitored, technician can realize the operation to controller by communication module; Meanwhile, controller also can possess OBD(On-Board Diagnostics (OBD)) function, can find out the failure condition of EGR valve by storage inside diagnostic trouble code.Separately as required, can pass through warm-up control module and auxiliary control module, realize the functions such as car load preheating, oil return, fuel feeding, high idle speed.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the structured flowchart of master chip module of the present invention;
Fig. 3 is the structured flowchart of power module of the present invention;
Fig. 4 is the structured flowchart of control module of the present invention;
Fig. 5 is the circuit diagram of sensor input signal puocessing module of the present invention;
Fig. 6 is the circuit diagram of warm-up control electricity module of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
A kind of direct current generator EGR valve control, its structure as shown in Figure 1.Comprise master chip module, power module, control module, sensor input signal puocessing module, communication module, warm-up control module and auxiliary control module, the output terminal of power module is connected with the power end of master chip module and sensor input signal puocessing module respectively, the input end of master chip module is connected with the output terminal of sensor input signal puocessing module, the output terminal of master chip module is connected with the input end of control module, warm-up control module and auxiliary control module respectively, and master chip module intercoms mutually by communication module and diagnostic equipment or computer.
Wherein: sensor input signal puocessing module is used for the active transducer signal of collection, passive transducer signal, d. c. voltage signal and tach signal to process, and exports to master chip module, and its circuit diagram as shown in Figure 5.Comprise independent active transducer signal processing circuit, passive transducer signal processing circuit, d. c. voltage signal processing circuit and the rotary speed signal sensor processing circuit arranging.
Wherein active transducer signal processing circuit is for processing the active transducer signal gathering, comprise current-limiting resistance R1, filter capacitor C1, pull down resistor R2, after described filter capacitor C1 and pull down resistor R2 are connected in parallel, be serially connected between the output terminal and ground of current-limiting resistance R1; Active transducer is throttle sensor, lift range sensor etc. such as.
Passive transducer signal processing circuit is for processing the passive transducer signal gathering, comprise current-limiting resistance R3, divider resistance R4 and filter capacitor C2 and C3, described divider resistance R4 and filter capacitor C3 are connected in series between the input end and ground of current-limiting resistance R3, lower end connection+5V of divider resistance R4, filter capacitor C2 is connected between the output terminal and ground of current-limiting resistance R3; Such as cooling-water temperature sensor of passive transducer etc.
D. c. voltage signal processing circuit, for the d. c. voltage signal gathering is processed, comprises current-limiting resistance R5, filter capacitor C4, pull down resistor R6, voltage-stabiliser tube Z1 and waveform shaping chip U1; Current-limiting resistance R5 and waveform shaping chip U1 are connected in series, and after filter capacitor C4, pull down resistor R6 and voltage-stabiliser tube Z1 are connected in parallel, are serially connected between the output terminal and ground of current-limiting resistance R5.
Rotary speed signal sensor processing circuit comprises voltage comparator U1A, integrated reverser U3A, photo coupler U2, capacitor C 5 and resistance R 7 ~ R11; The positive input terminal of voltage comparator U1A connects tach signal input end through resistance R 7, the positive input terminal of voltage comparator U1A is also through capacitor C 5 ground connection, the negative input end of voltage comparator U1A connects Vcc through resistance R 8, the negative input end of voltage comparator U1A is also through resistance R 9 ground connection, the output terminal of voltage comparator U1A connects the input end of integrated reverser U3A through photo coupler U2, the output terminal output speed signal of integrated reverser U3A; The output terminal of the output terminal of voltage comparator U1A also connects Vcc through resistance R 10, and the input end of integrated reverser U3A meets VBAT through resistance R 11.Rotary speed signal sensor processing circuit has adopted the measures such as lower pass-filter, comparison, decoupling, and employing voltage comparator U1A is by sine wave shaped to rectangular pulse, and photo coupler U2 separates analog end and digital end, plays Anti-Jamming; The signal of photo coupler TLP521-2 output is input to single-chip microcomputer through the further shaping of the integrated reverser of U3A with steadily through the first eliminator.
Master chip module is exported corresponding SC sigmal control control module by setting logic working for the signal that obtains according to sensor input signal puocessing module after via master chip module logical process, its structure as shown in Figure 2, comprises a single-chip microcomputer, chip external memory, electrical signal sample circuit, clock circuit and first eliminator.Chip external memory and single-chip microcomputer interconnection, for expanding memory data output; The output terminal of clock circuit connects the input end of single-chip microcomputer, for providing CLK clock to single-chip microcomputer; The input end of single-chip microcomputer is through the output terminal of the first eliminator connecting sensor input signal puocessing module, the input end of the output terminal link control module of single-chip microcomputer; The input end of electrical signal sample circuit connects the lift range sensor of direct current generator EGR valve to be tested, the output terminal of electrical signal sample circuit connects the input end of single-chip microcomputer, for testing the aperture size of direct current generator EGR valve, and feed back to single-chip microcomputer, carry out the adjustment of control signal.
Power module is respectively sensor input signal puocessing module and master chip module provides working power; its structure as shown in Figure 3; comprise power supply master chip, protective circuit, capacitor filter and power signal sampling circuit; the input end of protective circuit connects power supply; the output terminal of protective circuit connects power supply master chip, and the input end of power supply master chip is also connected with the output terminal of power signal sampling circuit and capacitor filter respectively.Described power supply master chip can be exported two-way power supply simultaneously, is respectively master chip module for power supply and the power supply of sensor input signal puocessing module; Protective circuit realizes anti-electric current, voltage and anti-reverse protective function; Whether power signal sampling circuit, offers master chip in order to the power supply signal of output is sampled and processes, detect power supply chip and be operated in normal range (NR).
Control module is for the driving signal to direct current generator EGR valve output different frequency to be tested and dutycycle, and its structure as shown in Figure 4, comprises signal drive circuit, over-current protection circuit and the second eliminator; The input end of over-current protection circuit connects power module; the output terminal of over-current protection circuit connects signal drive circuit; the input end of signal drive circuit is also connected with electrical signal sample circuit and the second eliminator respectively, and the input end of the second eliminator connects the output terminal of master chip module.Described signal drive circuit can be exported driving signal and the clockwise and anticlockwise signal of different frequency, dutycycle, controls the work of direct current generator EGR valve, and can realize clockwise and anticlockwise for realizing; The voltage signal of power module output is powered to signal drive circuit by protective circuit; The second eliminator is realized the signal of master chip module output is carried out to filtering processing.
Communication module comprises communication chip and peripheral circuit thereof, by communication interface with realize and being connected with diagnostic equipment or computer.
Direct current generator EGR valve control in the present embodiment also comprises the warm-up control module and the auxiliary control module that are connected with control module output terminal respectively.
Wherein warm-up control module is used for controlling large electric current (being limited in 3A) device or relay moves, for example preheating relay, solenoid valve etc.The circuit diagram of warm-up control module as shown in Figure 6, comprise a pliotron Q1 and a sustained diode 1, the base stage of described pliotron Q1 connects the output terminal of master chip module, the collector electrode of pliotron Q1 connects the positive pole of sustained diode 1, the grounded-emitter connection of pliotron Q1; Very signal output part of the current collection of pliotron Q1; The negative pole of sustained diode 1 connects positive source VBAT, like this in the time that preheating relay quits work, produce perceptual electrical signal just can consume by fly-wheel diode.
Auxiliary control module comprises control chip and peripheral circuit thereof, is not very large device or relay work in order to control electric current.In the present embodiment, auxiliary control module comprises seven way switch control circuits, can control the relay work that comprises preheat lamp, trouble light, oil return, high idle speed, confession wet goods device.
The present invention is for testing the direct current generator EGR valve of producing, and its working procedure is as described below:
First, input data according to the parameter request of different model direct current generator EGR valve to direct current generator EGR valve control inside.For example: the control frequency of motor, pid parameter, arteries and veins spectral data etc.
Then, sensor input signal puocessing module is connected with each sensor respectively, and control module and direct current generator EGR valve are connected.Sensor comprises throttle sensor, speed probe, cooling-water temperature sensor, intake flow sensor, air inlet pressure sensor etc.
After energising, the logic operation that direct current generator EGR valve is set according to controller, in the time of the sensor output signal, sensor input signal puocessing module is exported to master chip module after gathering, change and processing, master chip module is searched corresponding data according to the signal of input in corresponding arteries and veins spectrogram, according to the data of searching, master chip module is according to the control frequency arranging and pid parameter to the control signal of control module delivery valve aperture, and control module receives to be controlled direct current generator EGR valve after signal and open (electrical signal that control signal is variable duty ratio).
Now, the lift range sensor on direct current generator EGR valve is according to the size of valve opening, and to master chip module input voltage signal, the electrical signal sample circuit of master chip module gathers after this electrical signal, carries out the judgement of signal.If the aperture of valve does not reach the requirement of data in arteries and veins spectrogram, change accordingly the size of dutycycle, until aperture is stabilized in desired scope.
In running, control extremely if occur, direct current generator EGR valve can automatically generate a diagnostic trouble code and be stored in chip external memory, facilitates technician to read and solves, processes.In test process, technician also can connect computer or diagnostic equipment is modified, monitors, preserved all parameters by communication interface, to reach test objective.Certainly, also can realize the connection of OBD by communication module.
When the present invention is used for the direct current generator EGR valve in car to control, can pass through communication module real-time monitoring system operation information, as the real-time change situation of rotating speed, throttle, water temperature, suction pressure, charge flow rate, the unlatching of the aperture of direct current EGR valve, electric current, dutycycle real-time change, valve, shut-in time equicorrelated case.In addition, as required, can increase warm-up control module and auxiliary control module.Warm-up control part can be controlled large electric current (in 3A) device or relay, for example preheating relay, solenoid valve etc.Auxiliary control can be controlled low current device or relay (in 300mA), as preheat lamp, trouble light, oil return solenoid valve relay, high idle speed solenoid relay valve etc.
Claims (6)
1. a direct current generator EGR valve control, it is characterized in that: comprise master chip module, power module, control module, sensor input signal puocessing module and the communication module being connected with diagnostic equipment or computer, described sensor input signal puocessing module is used for the active transducer signal of collection, passive transducer signal, d. c. voltage signal and tach signal to process, and exports to master chip module; The signal that master chip module obtains according to sensor input signal puocessing module is exported corresponding SC sigmal control control module after via master chip module logical process by setting logic working; Control module is for the driving signal to direct current generator EGR valve output different frequency to be tested and dutycycle; Power module is respectively sensor input signal puocessing module and master chip module provides working power; Communication module is realized the communication connection between master chip module and diagnostic equipment or computer.
2. a kind of direct current generator EGR valve control according to claim 1, it is characterized in that: described master chip module comprises single-chip microcomputer, chip external memory, electrical signal sample circuit, clock circuit and the first eliminator, described chip external memory and single-chip microcomputer interconnection, be used for expanding memory data output, clock circuit is for providing CLK clock to single-chip microcomputer; The input end of described single-chip microcomputer is through the output terminal of the first eliminator connecting sensor input signal puocessing module, and the input end of single-chip microcomputer is also connected with electrical signal sample circuit, the input end of the output terminal link control module of single-chip microcomputer.
3. a kind of direct current generator EGR valve control according to claim 2, is characterized in that: described control module comprises signal drive circuit, over-current protection circuit and the second eliminator; Described signal drive circuit is to driving signal and the clockwise and anticlockwise signal of direct current generator EGR valve output different frequency to be tested and dutycycle; signal drive circuit connects the output terminal of power module through over-current protection circuit, signal drive circuit also connects the output terminal of single-chip microcomputer in master chip module through the second eliminator.
4. a kind of direct current generator EGR valve control according to claim 1, is characterized in that: described sensor input signal puocessing module comprises independent active transducer signal processing circuit, passive transducer signal processing circuit, d. c. voltage signal processing circuit and the rotary speed signal sensor processing circuit arranging;
Described active transducer signal processing circuit comprises current-limiting resistance R1, filter capacitor C1, pull down resistor R2, after described filter capacitor C1 and pull down resistor R2 are connected in parallel, is serially connected between the output terminal and ground of current-limiting resistance R1;
Described passive transducer signal processing circuit comprises current-limiting resistance R3, divider resistance R4 and filter capacitor C2 and C3, described divider resistance R4 and filter capacitor C3 are connected in series between the input end and ground of current-limiting resistance R3, lower end connection+5V of divider resistance R4, filter capacitor C2 is connected between the output terminal and ground of current-limiting resistance R3;
Described d. c. voltage signal processing circuit comprises current-limiting resistance R5, filter capacitor C4, pull down resistor R6, voltage-stabiliser tube Z1 and waveform shaping chip U1, described current-limiting resistance R5 and waveform shaping chip U1 are connected in series, and after filter capacitor C4, pull down resistor R6 and voltage-stabiliser tube Z1 are connected in parallel, are serially connected between the output terminal and ground of current-limiting resistance R5;
Described rotary speed signal sensor processing circuit comprises voltage comparator U1A, integrated reverser U3A, photo coupler U2, capacitor C 5 and resistance R 7 ~ R11; The positive input terminal of voltage comparator U1A connects tach signal input end through resistance R 7, the positive input terminal of voltage comparator U1A is also through capacitor C 5 ground connection, the negative input end of voltage comparator U1A connects Vcc through resistance R 8, the negative input end of voltage comparator U1A is also through resistance R 9 ground connection, the output terminal of voltage comparator U1A connects the input end of integrated reverser U3A through photo coupler U2, the output terminal output speed signal of integrated reverser U3A; The output terminal of the output terminal of voltage comparator U1A also connects Vcc through resistance R 10, and the input end of integrated reverser U3A meets VBAT through resistance R 11.
5. a kind of direct current generator EGR valve control according to claim 1, is characterized in that: described power module comprises power supply master chip, protective circuit, capacitor filter and power signal sampling circuit; The input end of described power supply master chip connects power supply through protective circuit, and power supply master chip is exported two-way power supply simultaneously and is respectively master chip module and the power supply of sensor input signal puocessing module; Protective circuit realizes anti-electric current, voltage and anti-reverse protective function; Whether power signal sampling circuit is operated in normal range (NR) for the power supply signal of output is sampled and detected power supply master chip.
6. a kind of direct current generator EGR valve control according to claim 1, is characterized in that: the output terminal of described master chip module is also connected with warm-up control module, described warm-up control module comprises pliotron Q1 and sustained diode 1; The base stage of described pliotron Q1 connects the output terminal of master chip module, and the collector electrode of pliotron Q1 connects the positive pole of sustained diode 1, the grounded-emitter connection of pliotron Q1; Very signal output part of the current collection of pliotron Q1.
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| CN201410340628.6A CN104074639B (en) | 2014-07-16 | 2014-07-16 | A kind of direct current generator EGR valve controller |
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| CN106051182A (en) * | 2016-08-23 | 2016-10-26 | 无锡隆盛科技股份有限公司 | Intelligent butterfly valve with CAN (controller area network) bus communication function |
| CN106121840A (en) * | 2016-08-23 | 2016-11-16 | 无锡隆盛科技股份有限公司 | Intelligence EGR valve |
| CN106523201A (en) * | 2016-12-28 | 2017-03-22 | 无锡隆盛科技股份有限公司 | Multi-way EGR valve controller |
| CN107202691A (en) * | 2017-08-03 | 2017-09-26 | 深圳市山水动力科技有限公司 | EGR valve detector |
| CN107620645A (en) * | 2017-09-18 | 2018-01-23 | 宝沃汽车（中国）有限公司 | Egr valve control device and engine system and vehicle |
| CN109083755A (en) * | 2018-09-30 | 2018-12-25 | 潍柴动力股份有限公司 | A kind of engine valve control method and device |
| CN111927666A (en) * | 2020-08-14 | 2020-11-13 | 无锡职业技术学院 | High-pressure common rail oil sprayer rapid follow current circuit |
| CN111927657A (en) * | 2020-08-11 | 2020-11-13 | 一汽解放汽车有限公司 | Engine air inlet system, structure design method and low-temperature exhaust gas circulation control method |
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| CN106523201A (en) * | 2016-12-28 | 2017-03-22 | 无锡隆盛科技股份有限公司 | Multi-way EGR valve controller |
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| CN111927666B (en) * | 2020-08-14 | 2021-10-29 | 无锡职业技术学院 | High-pressure common rail oil sprayer rapid follow current circuit |
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