CN2931950Y - Electronic control unit of power assisted system of motorlorry gear box - Google Patents
Electronic control unit of power assisted system of motorlorry gear box Download PDFInfo
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- CN2931950Y CN2931950Y CN 200620025056 CN200620025056U CN2931950Y CN 2931950 Y CN2931950 Y CN 2931950Y CN 200620025056 CN200620025056 CN 200620025056 CN 200620025056 U CN200620025056 U CN 200620025056U CN 2931950 Y CN2931950 Y CN 2931950Y
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Abstract
The utility model relates to auto truck gear box assisting system control unit, which comprises a gear box over speed protecting circuit, a high-low switch circuit, an alarm circuit, an engine over speed protecting circuit, an off shift observing and drive magnetic valve circuit and a magnetic active circuit as an acousto-optic enunciator circuit. The utility model is characterized in that: the gear box over speed protecting circuit is provided with a wave shaping circuit capable of picking rotating speed of the gear box low speed gear as frequency signal and transforming the signal after being shaped to a frequency voltage transmission and judging circuit to achieve frequency-voltage transformation, judge whether the rotating speed is over limit, input the signal to the connected over speed judging and executing circuit and output high level and low level then drive or not drive the shift protecting magnetic valve. The frequency-voltage transforming chip is of good commonality. The check circuit signal is of small interference and the reference potential is of small deviation, low discreteness and convenient for debugging. The gear box off shift protecting circuit ensures no off shift of autos after low speed and over loading, which improves safety of autos.
Description
Technical field
The utility model belongs to the automotive-type electronic product, particularly the truck speed changing box booster system electric-controlled unit.
Background technique
Along with the raising of people's living standard, the further expansion of Sheng Chaning again is for the logistics transport service has been brought the variation of making rapid progress.And motor transport service is accompanied by the connection of expressway network and is just bringing into play more and more surging effect.How to make cargo security, fast transport to the destination, become the important topic of auto manufacturing.The automobile gearbox booster system electric-controlled unit (hereinafter to be referred as ECU (Electrical Control Unit)) that the daily output bavin is produced can make the driver obtain power-assisted in gearshift procedure, can send caution for improper operation again.It had both reduced labor intensity, had reduced fatigue, can improve driver's attention, enhancing travelling comfort again, thereby strengthened the Security in the transportation process effectively.
The automobile gearbox force aid system, it comprises automobile gearbox status switch and automobile gearbox gear rotation frequency signal Acquisition Circuit, ECU (Electrical Control Unit), reaches high and low gear shift, monitoring out of supply and drives electromagnetic valve circuit, mu balanced circuit, alarm buzzer.ECU (Electrical Control Unit) contains that gearbox hypervelocity prevents circuit, high and low shift diverter circuit, alarm circuit, racing of the engine prevent circuit, relay can not gear shift the time; ECU (Electrical Control Unit) is by gearbox status switch and automobile gearbox gear rotating speed analog variation signal, the gearbox hypervelocity of using input to be connected prevents circuit, high and low shift diverter circuit, alarm circuit, racing of the engine prevent circuit, the low-grade anti-circuit out of supply of gearbox can not gear shift the time, making corresponding function judges, drive acoustooptic alarm respectively or drive the corresponding solenoid valve action, for the driver offers help via relay 8.
There are 2 deficiencies by analyzing this ECU (Electrical Control Unit):
1, ECU (Electrical Control Unit) is chip used is offshore company's customed product (no longer producing in batches), and buying is difficulty quite.This chip is the DIP encapsulation simultaneously, exists signal to disturb hidden danger.And the internal reference potential error is big, and the discreteness height is made troubles to batch process.
2, when heavy duty, situation out of supply takes place in the automobile traveling process, potential safety hazard is bigger.
Summary of the invention
The utility model purpose is to overcome the deficiency that above prior art exists, and selects for use the encapsulation of SOP type Surface Mount, inside to carry the universal frequency voltage transitions chip of mu balanced circuit, and antijamming capability is strong, working stability; Improve and low-grade solenoid valve sequential is adjusted, guarantee the truck driving safety, the truck speed changing box booster system electric-controlled unit is provided, and it is applied become possibility.
The truck speed changing box booster system electric-controlled unit that the utility model provides contains that gearbox hypervelocity prevents circuit, high and low shift diverter circuit, alarm circuit, racing of the engine prevent circuit, monitoring out of supply and drive electromagnetic valve circuit, relay can not gear shift the time; By using gearbox status switch and gearbox gear rotating speed analogue signal, the gearbox hypervelocity that input is connected prevents circuit, high and low shift diverter circuit, alarm circuit and racing of the engine prevent that circuit from doing gear shift and judging can not gear shift the time, connect respectively and drive acoustooptic alarm, and connect relay and drive the solenoid valve action of corresponding gear; It is characterized in that: described gearbox hypervelocity prevents that circuit from containing gearbox low speed gear rotating speed is picked up shaping circuit into frequency signal, and shaping handled voltage to frequency conversion and the decision circuit that the back signal is defeated by connection, finish the voltage to frequency conversion, judge rotating speed whether transfinite and import the hypervelocity judgement that connected and executive circuit (, the output high-low level is or does not drive the anti-shift solenoid valve that connects.
Described automobile gearbox status switch has neutral switch, high and low shift selector switch, low-grade district switch; Neutral switch, high and low shift selector switch are connected respectively to pin 1 and the pin 2 of NOR gate IC5, the pin 3 of IC5 is distinguished pin 9 and the pin 8 that switch is connected integrated AND circuit IC6 respectively with low grade, and the pin 10 of integrated AND circuit IC6 is as corresponding relay and electromagnetic valve signal.
Conversion of described voltage to frequency and decision circuit contain frequency/voltage conversion chip IC1, the input circlult that connects chip IC1, no-load voltage ratio circuit, by turn-on voltage circuit with close the comparator circuit that potential circuit forms jointly, the output circuit that reaches chip IC 1; The input pulse signal is through resistance R 19, and connects after capacitor C 33 shapings from the input of chip 1 pin, and capacitor C 33 the other end ground connection form input circlult.
Described no-load voltage ratio circuit is made up of capacitor C 45, C14, C15, resistance R 36; Connect chip pin 2 after capacitor C 45, the C14 parallel connection, connect chip pin 3, the other end ground connection of C45, C14, C15, resistance R 36 after resistance R 36 and capacitor C 15 are in parallel; The no-load voltage ratio circuit is determined the scaling factor K among output voltage V out=K * Fin.
5, truck speed changing box booster system electric-controlled unit according to claim 3, the turn-on voltage circuit that it is characterized in that described comparator circuit is from 7 inputs of chip pin, between pin 7 and the ground and meet potentiometer VR1, resistance R 67 and filter capacitor C44, resistance R 68 is connected between chip pin 7 and the chip internal voltage pin 6, comparator close potential circuit except constituting the turn-on voltage circuit components and parts, increased resistance R 69 again, adjustable resistance VR2 and diode D24, its resistance R 69 and adjustable resistance VR2 back earlier in parallel one chip termination pin 7, another terminating diode D24 positive pole, negative pole connects chip pin 5, turn-on voltage circuit and close potential circuit and form comparator circuit jointly.
5, truck speed changing box booster system electric-controlled unit according to claim 3, it is characterized in that described output circuit is made up of power supply VCC, resistance R 31, resistance R 32, resistance R 60, chip and NPN triode TR11, chip 5 pin are connected to power supply VCC by resistance R 60,5 pin are connected to the base stage of triode TR11 by resistance R 31 simultaneously, the TR11 grounded-emitter connection, collector electrode meets power supply voltage VCC through resistance R 32; TR11 is anti-phase with 5 pin output levels, as signal determining, exports from collector electrode.
Described monitoring out of supply and drive that electromagnetic valve circuit contains low-grade district switching signal shaping circuit, GSS Gear Select Switch signal transformation circuit, neutral switch signal transformation circuit, delay circuit and by latching and the signal reset circuit that NOR gate IC8 constitutes; The neutral switch signal transformation circuit is through delay circuit and by latching and the solenoid valve action of the low-grade district of signal reset circuit driving that the IC8 NOR gate constitutes.
Above-described truck speed changing box booster system electric-controlled unit is characterized in that:
A, the described low-grade preceding terminating resistor R13 that distinguishes the switching signal shaping circuit by resistance R 17, the rear end also meets reference diode ZD6 and C22 simultaneously, and the other end of resistance R 13, reference diode ZD6 and C22 all ground connection constitutes; Resistance R 13 connecting resistance R23 also connect integrated AND circuit IC6C pin 8;
B, described GSS Gear Select Switch signal transformation circuit are by the preceding terminating resistor R12 of resistance R 16, and the rear end also meets reference diode ZD5 and C21 simultaneously, and the other end ground connection of resistance R 12 reference diode ZD5 and C21 constitutes; Resistance R 16 connecting resistance R22 also connect 2 pin of integrated OR-NOT circuit IC5;
C, described neutral switch signal transformation circuit are by the preceding terminating resistor R11 of resistance R 15, and the rear end also meets reference diode ZD4 and C20 simultaneously, and the other end ground connection of resistance R 11, reference diode ZD4 and C20 constitutes;
D, described IC8 latch and the signal reset circuit by the diode D8 of resistance R 15 in the neutral switch signal transformation circuit and be connected in series capacitor C 11 and diode D10 after, connect the base stage of triode TR4; Before the resistance R 27 1 termination capacitor C11, behind resistance R 30 and the capacitor C 4 one termination capacitor C11, the other end ground connection of resistance R 27, R30 and diode D10; The grounded-emitter connection of triode TR4, the collector electrode of triode TR4 meets power supply voltage VCC through resistance R 34, R33, and the neutral switch signal forms reset signal via the collector electrode that C11 is coupled in triode TR4, is connected to 5 pin and 6 pin of OR-NOT circuit IC8B, reverse by IC8B, export from 4 pin; IC8C and IC8D constitute latch cicuit, and IC8B pin 13 connects IC8D pin 4, and IC8B pin 12 connects IC8C pin 4, and pin 11 pin 8 connect IC8A pin 1, and IC8D pin 3 connects low-grade district driving circuit for electromagnetic valve;
E, described delay circuit is by resistance R 21, VR3, R39, D18, IC6A and electrochemical capacitor C4 form, electrochemical capacitor C4 minus earth, positive pole and R21, the continuous VR3 the other end of VR3 connects R40, the R21 the other end connects and 1 of door IC6,2 pin, the series resistors that diode D18 and R21 and VR3 form also connects, IC8 latch cicuit input end connects resistance R 1, and R2, be optional resistance, when selecting R1 for use, the time, low-grade state in advancing is passed through the IC8 latch circuit latches, drive low-grade district solenoid valve, up to next operation. when selecting R2 for use, the time, when meaning low grade and advancing after if gearbox control monitors signal out of supply, the IC8 latch cicuit latchs the low-grade district of driving solenoid valve at once and opens, up to next operation.
The truck speed changing box booster system electric-controlled unit that the utility model provides compared with prior art, it significantly improves and beneficial effect is:
1, the hypervelocity of the gearbox in this ECU (Electrical Control Unit) is prevented that circuit from improving.The signal pickup circuit of this part is designed again, promptly replace original voltage to frequency conversion chip (encapsulation of SOP type Surface Mount, inside carry the universal frequency voltage transitions chip model of mu balanced circuit), and peripheral circuit is carried out corresponding modify with universal frequency voltage transitions chip.
2, when preventing situation out of supply, the utility model has adopted two kinds of schemes: when scheme 1, automobile were advanced at low speed, the low-grade solenoid valve of gearbox was set to often open, and stops engaging gear to separate; Scheme 2, after gearbox control monitors signal out of supply (this moment engaging gear fully separate), immediately low-grade solenoid valve is opened, engaging gear is advanced put in place, and keeps this solenoid valve often to open, stop engaging gear to separate once more; Up to next operation.
3, because the utility model has adopted this universal frequency voltage transitions chip, make that the gear rotation detection circuit signal interference after improving is little, the reference potential deviation is little, discreteness is low, the production debugging is convenient.Because this universal frequency voltage transitions chip buying easily, is produced for this ECU (Electrical Control Unit) and brought very big facility, make the universal possibility that becomes of truck speed changing box booster system simultaneously.
4, the utility model is that engaging gear has increased axial force, avoided the gear axial motion, playing and prevent that situation out of supply from taking place. scheme 2 has avoided scheme 1 low and middle-grade solenoid valves often to open this solenoid valve defective in working life of being brought, prevents that again institute out of supply from causing easily hidden danger of safety.
Description of drawings
Fig. 1 is truck speed changing box booster system electric-controlled unit and peripheral circuit diagram;
Fig. 2 is that the hypervelocity of truck speed changing box booster system electric-controlled unit prevents electrical schematic diagram;
Fig. 3 is the anti-electrical schematic diagram out of supply of the gearbox of truck speed changing box booster system electric-controlled unit;
Fig. 4 is the voltage to frequency conversion and the decision circuit figure of truck speed changing box booster system electric-controlled unit;
Fig. 5 is the monitoring out of supply and the executive circuit figure of truck speed changing box booster system electric-controlled unit;
Fig. 6 is the voltage to frequency conversion and the determination flow block diagram of truck speed changing box booster system electric-controlled unit;
Fig. 7 and Fig. 8 are respectively two kinds of working method FB(flow block)s for the anti-mechanism out of supply of truck speed changing box booster system.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
Shown in Figure 1, truck speed changing box booster system electric-controlled unit and peripheral circuit diagram.The truck speed changing box booster system electric-controlled unit comprises automobile gearbox status switch 1; Automobile gearbox gear speed analogue signal 2; Monitoring out of supply and driving electromagnetic valve circuit 7; Mu balanced circuit 9; Alarm buzzer 10; The gearbox hypervelocity prevents circuit 3; High and low shift diverter circuit 4; Alarm circuit 5 in the time of can not gear shift; Racing of the engine prevents circuit 6; Relay 8.ECU (Electrical Control Unit) is passed through gearbox status switch 1 and automobile gearbox gear rotating speed analogue signal 2, the gearbox hypervelocity that input is connected prevents circuit 3, high and low shift actuating circuit 4, alarm circuit 5, racing of the engine prevent circuit 6, monitoring out of supply and drive electromagnetic valve circuit 7 can not gear shift the time, making corresponding function judges, drive acoustooptic alarm respectively or drive the corresponding solenoid valve action, for the driver offers help via relay 8.
Shown in Figure 2, the gearbox hypervelocity of truck speed changing box booster system electric-controlled unit prevents electrical schematic diagram; Gearbox hypervelocity prevents that circuit from containing and picks up gearbox low speed gear rotating speed for the shaping circuit 301 of frequency signal and integer is handled the back signal be defeated by and connect voltage to frequency conversion and decision circuit 302, finish the voltage to frequency conversion, judge whether rotating speed transfinites, the hypervelocity that input is connected is judged and executive circuit 303, the output high-low level, be or not anti-shift solenoid valve 304 work of driving, and also have other accessory circuit 305.
Shown in Figure 3, the gearbox of truck speed changing box booster system electric-controlled unit is prevented electrical schematic diagram out of supply; Related automobile gearbox status switch 1 has neutral switch 101 simultaneously, high-grade selector switch 102, low-grade district switch 103.
Shown in Figure 4, the voltage to frequency conversion and the decision circuit of truck speed changing box booster system electric-controlled unit; It contains frequency/voltage conversion chip IC1, connect the input circlult of chip IC1, the no-load voltage ratio circuit, by turn-on voltage circuit with close potential circuit and form comparator circuit, and the output circuit of chip IC 1 jointly.
The selected frequency/voltage conversion chip of the present embodiment IC1, model is LM2917, the input pulse signal is through resistance R 19, and after capacitor C 33 shapings from connecting 1 input of chip pin, capacitor C 33 the other end ground connection form input circlult.
Form the no-load voltage ratio circuit by capacitor C 45, C14, C15, resistance R 36, connect chip pin 2 after capacitor C 45, the C14 parallel connection, connect chip pin 3 after resistance R 36 and capacitor C 15 are in parallel; The other end while ground connection no-load voltage ratio circuit of C45, C14, C15, resistance R 36 is determined the scaling factor K among output voltage V out=K * Fin.
The turn-on voltage circuit of comparator is made up of the reference potential of potentiometer VR1, R68, R67 and IC1, VR1 one end ground connection, middle sliding point and another chip termination pin 7, resistance R 67 and filter capacitor C44 and resistance R 68 formation in parallel; Comparator close potential circuit by potentiometer VR1, VR2, R67, R68, R69 diode D24, and the reference potential of IC1 form, the chip termination pin 7 of VR1, the resistance R 68 of another chip termination pin 6 and resistance R 69 and adjustable resistance VR2 back earlier in parallel one chip termination pin 7, and through a diode D24 connection chip pin 5, an electrochemical capacitor C3 in parallel between core contact pin pin 6 and the ground, power supply voltage Hot end VCC=connects chip pin 6 through resistance R 70 and forms; Turn-on voltage circuit and close potential circuit and form comparator circuit jointly;
Output circuit is made up of resistance R 31, R32, R70, triode TR11, resistance R 31 connects chip pin 5 and connects the base stage of triode TR11, the emitter of triode TR11 connects power supply voltage VCC-end, and (ground connection promptly connects chip pin 4 pin, and collector electrode meets power supply voltage VCC through resistance R 32; TR11 is anti-phase with 5 pin output levels, exports as signal determining.
Shown in Figure 5, the monitoring out of supply and the executive circuit of truck speed changing box booster system electric-controlled unit.Contain low-grade district switching signal shaping circuit, GSS Gear Select Switch signal transformation circuit, neutral switch signal transformation circuit, delay circuit, IC8 latchs and the signal reset circuit; The neutral switch signal transformation circuit forms reset signal via the collector electrode that C11 is coupled in triode TR4, be connected to integrated NOR gate IC8 and constitute and latch and the reset terminal of signal reset circuit, and latch and the signal reset circuit drives the solenoid valve action of low-grade district by IC8.
By a terminating resistor R13 of resistance R 17, the other end while also meets reference diode ZD6 negative pole and C22, and the other end ground connection of resistance R 13 reference diode ZD6 and C22 constitutes low-grade district switching signal circuit.Resistance R 13 connecting resistance R23 also connect integrated AND circuit IC6C pin 8.
By a terminating resistor R12 of resistance R 16, the other end while also meets reference diode ZD5 negative pole and C21, and the other end ground connection of resistance R 12 reference diode ZD5 and C21 constitutes the GSS Gear Select Switch signal transformation circuit.Resistance R 16 connecting resistance R22 also connect integrated OR-NOT circuit IC5 pin 2.
By a terminating resistor R11 of resistance R 15, the other end while also meets reference diode ZD4 negative pole and C20, and the other end ground connection of resistance R 11 reference diode ZD4 and C20 constitutes the neutral switch signal transformation circuit.
IC8 latch and the signal reset circuit in resistance R 1` and R2` be an optional resistance, when selecting R1` for use, low-grade state in advancing is passed through the IC8 latch circuit latches, drive low-grade district solenoid valve. when selecting R2` for use, after if gearbox control monitors signal out of supply, the IC8 latch circuit latches drives low-grade district solenoid valve when meaning low grade and advancing; With the voltage after the shaping as input signal.
Shown in Figure 6, the voltage to frequency conversion and the determination flow block diagram of truck speed changing box booster system electric-controlled unit; The anti-locking mechanism working mechanism of gearbox hypervelocity:
Shift level is during by high-grade step-down shelves, low-grade solenoid valve action under the normal condition, high-grade solenoid valve is failure to actuate, if this moment, the low speed gear rotating speed surpassed a certain setting value, ECU (Electrical Control Unit) is accepted corresponding control signal and driven and prevent that the shift solenoid valve from opening, low-grade solenoid valve akinesia, keep high-grade constantly, stop non routine operation, if the driver by force shift then give the alarm, prompting reduces the speed of a motor vehicle, and the driver is line operate again.
Fig. 7 and Fig. 8 are respectively two kinds of working methods of anti-mechanism out of supply:
Fig. 7, when automobile when low speed is advanced, the low-grade district of gearbox solenoid valve is set to often open, and stops engaging gear to separate, up to next shift operation.
Fig. 8, after gearbox control monitors signal out of supply (this moment engaging gear fully separate), immediately low grade district solenoid valve is opened, engaging gear is advanced put in place, and keep solenoid valve often to open, stop engaging gear to separate once more, up to next shift operation.
Concrete working mechanism is as follows:
1, automobile is at the cruising state, and when gearbox was uprised grade by low grade, ECU (Electrical Control Unit) was accepted corresponding control signal, for the shift process provides air assisted.High-grade electromagnetic valve signal leaves neutral position at Shift lever and removes after one second; If finish high-grade step-down shelves action, low-grade solenoid-driven signal is opened, and two kinds of improvement modes are arranged this moment: the low-grade solenoid valve normal open of mode (1) stops engaging gear to separate, up to next shift operation; The low-grade electromagnetic valve signal of mode (2) leaves neutral position at Shift lever and removes after one second, but after gearbox control monitors signal out of supply (this moment, engaging gear did not separate fully), immediately low grade district solenoid valve is opened, the engaging gear propelling is put in place, and keep solenoid valve often to open, stop engaging gear to separate once more; Up to next operation.
When 2, shift level is by high-grade step-down shelves, low-grade solenoid valve action under the normal condition, high-grade solenoid valve akinesia, if this moment, the low speed gear rotating speed surpassed a certain setting value, ECU (Electrical Control Unit) is accepted corresponding control signal and is driven and prevent that the shift solenoid valve from opening, low-grade solenoid valve akinesia, keep high-grade constantly, stop non routine operation, if the driver by force shift then give the alarm, prompting reduces the speed of a motor vehicle, and the driver is line operate again.
3, when the travelling speed of car surpassed engine speed, the prompting driver should take brake measure, gets back to the safe driving scope.
4, automobile is at neutral state, and shift level relevant position solenoid valve is worked, and shift level is when high tap position, if there is not other operation, high-grade control signal is removed after 10 minutes; Shift level when low level, the low-grade normal open of mode (1).(2) 10 minutes rear electromagnetic valves of mode are closed.
Claims (8)
1, truck speed changing box booster system electric-controlled unit contains that gearbox hypervelocity prevents circuit (3), high and low shift diverter circuit (4), alarm circuit (5), racing of the engine prevent circuit (6), monitoring out of supply and drive electromagnetic valve circuit (7), relay (8) can not gear shift the time; By using gearbox status switch (1) and gearbox gear rotating speed analogue signal (2), the gearbox hypervelocity that input is connected prevents circuit (3), high and low shift diverter circuit (4), alarm circuit (5) and racing of the engine prevent that circuit (6) from doing gear shift and judging can not gear shift the time, connect respectively and drive acoustooptic alarm, and connect relay (8) and drive the solenoid valve action of corresponding gear; It is characterized in that: described gearbox hypervelocity prevents that circuit (3) from containing gearbox low speed gear rotating speed is picked up shaping circuit (301) into frequency signal, and shaping handled voltage to frequency conversion and the decision circuit (302) that the back signal is defeated by connection, finish the voltage to frequency conversion, whether the judgement rotating speed transfinites and imports the hypervelocity that is connected and judge and executive circuit (303), the output high-low level is or does not drive the anti-shift solenoid valve (304) that connects.
2, truck speed changing box booster system electric-controlled unit according to claim 1 is characterized in that described automobile gearbox status switch (1) has neutral switch (101), high and low shift selector switch (102), low-grade district switch (103); Neutral switch, high and low shift selector switch are connected respectively to pin 1 and 2 pin of NOR gate IC5, the pin 3 of IC5 is distinguished the pin 9 and pin 8 that switch is connected integrated AND circuit IC6 respectively with low grade, and the pin 10 of integrated AND circuit IC6 is as corresponding relay (7) and solenoid valve (8) control signal.
3, truck speed changing box booster system electric-controlled unit according to claim 1, it is characterized in that conversion of described voltage to frequency and decision circuit contain frequency/voltage conversion chip IC1, the input circlult that connects chip IC1, no-load voltage ratio circuit, by turn-on voltage circuit with close the comparator circuit that potential circuit forms jointly, the output circuit that reaches chip IC 1; The input pulse signal is through resistance R 19, and connects after capacitor C 33 shapings from the input of chip 1 pin, and capacitor C 33 the other end ground connection form input circlult.
4, truck speed changing box booster system electric-controlled unit according to claim 3 is characterized in that described no-load voltage ratio circuit is made up of capacitor C 45, C14, C15, resistance R 36; Connect chip pin 2 after capacitor C 45, the C14 parallel connection, connect chip pin 3, the other end ground connection of C45, C14, C15, resistance R 36 after resistance R 36 and capacitor C 15 are in parallel; The no-load voltage ratio circuit is determined the scaling factor K among output voltage V out=K * Fin.
5, truck speed changing box booster system electric-controlled unit according to claim 3, the turn-on voltage circuit that it is characterized in that described comparator circuit is from 7 inputs of chip pin, between pin 7 and the ground and meet potentiometer VR1, resistance R 67 and filter capacitor C44, resistance R 68 is connected between chip pin 7 and the chip internal voltage pin 6, comparator close potential circuit except constituting the turn-on voltage circuit components and parts, increased resistance R 69 again, adjustable resistance VR2 and diode D24, resistance R 69 an and adjustable resistance VR2 chip termination pin 7 afterwards earlier in parallel wherein, another terminating diode D24 positive pole, negative pole connects chip pin 5, turn-on voltage circuit and close potential circuit and form comparator circuit jointly.
5, truck speed changing box booster system electric-controlled unit according to claim 3, it is characterized in that described output circuit is made up of power supply VCC, resistance R 31, resistance R 32, resistance R 60, chip and NPN triode TR11, chip 5 pin are connected to power supply VCC by resistance R 60,5 pin are connected to the base stage of triode TR11 by resistance R 31 simultaneously, the TR11 grounded-emitter connection, collector electrode meets power supply voltage VCC through resistance R 32; TR11 is anti-phase with 5 pin output levels, as signal determining, exports from collector electrode.
6, truck speed changing box booster system electric-controlled unit according to claim 1 is characterized in that described monitoring out of supply and drives that electromagnetic valve circuit (7) contains low-grade district switching signal shaping circuit, GSS Gear Select Switch signal transformation circuit, neutral switch signal transformation circuit, delay circuit and by latching and the signal reset circuit that NOR gate IC8 constitutes; The neutral switch signal transformation circuit is through delay circuit and by latching and the solenoid valve action of the low-grade district of signal reset circuit driving that the IC8 NOR gate constitutes.
7, truck speed changing box booster system electric-controlled unit according to claim 6 is characterized in that:
A, the described low-grade preceding terminating resistor R13 that distinguishes the switching signal shaping circuit by resistance R 17, the rear end also meets reference diode ZD6 and C22 simultaneously, and the other end of resistance R 13, reference diode ZD6 and C22 all ground connection constitutes; Resistance R 13 connecting resistance R23 also connect integrated AND circuit IC6C pin 8;
B, described GSS Gear Select Switch signal transformation circuit are by the preceding terminating resistor R12 of resistance R 16, and the rear end also meets reference diode ZD5 and C21 simultaneously, and the other end ground connection of resistance R 12 reference diode ZD5 and C21 constitutes; Resistance R 16 connecting resistance R22 also connect 2 pin of integrated OR-NOT circuit IC5;
C, described neutral switch signal transformation circuit are by the preceding terminating resistor R11 of resistance R 15, and the rear end also meets reference diode ZD4 and C20 simultaneously, and the other end ground connection of resistance R 11, reference diode ZD4 and C20 constitutes;
D, described IC8 latch and the signal reset circuit by the diode D8 of resistance R 15 in the neutral switch signal transformation circuit and be connected in series capacitor C 11 and diode D10 after, connect the base stage of triode TR4; Before the resistance R 27 1 termination capacitor C11, behind resistance R 30 and the capacitor C 4 one termination capacitor C11, the other end ground connection of resistance R 27, R30 and diode D10; The grounded-emitter connection of triode TR4, the collector electrode of triode TR4 meets power supply voltage VCC through resistance R 34, R33, and the neutral switch signal forms reset signal via the collector electrode that C11 is coupled in triode TR4, is connected to 5 pin and 6 pin of OR-NOT circuit IC8B, reverse by IC8B, export from 4 pin; IC8C and IC8D constitute latch cicuit, and IC8B pin 13 connects IC8D pin 4, and IC8B pin 12 connects IC8C pin 4, and pin 11 pin 8 connect IC8A pin 1, and IC8D pin 3 connects low-grade district driving circuit for electromagnetic valve;
E, described delay circuit is by resistance R 21, VR3, R39, D18, IC6A and electrochemical capacitor C4 form, electrochemical capacitor C4 minus earth, positive pole and R21, the continuous VR3 the other end of VR3 connects R40, the R21 the other end connects and 1 of door IC6,2 pin, the series resistors that diode D18 and R21 and VR3 form also connects, IC8 latch cicuit input end connects resistance R 1` and R2` is optional resistance, when selecting R1` for use, low-grade state in advancing is passed through the IC8 latch circuit latches, drive low-grade district solenoid valve, up to next operation. when selecting R2` for use, when meaning low grade and advancing after if gearbox control monitors signal out of supply, the IC8 latch cicuit latchs the low-grade district of driving solenoid valve at once and opens, up to next operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025056 CN2931950Y (en) | 2006-07-21 | 2006-07-21 | Electronic control unit of power assisted system of motorlorry gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025056 CN2931950Y (en) | 2006-07-21 | 2006-07-21 | Electronic control unit of power assisted system of motorlorry gear box |
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| Publication Number | Publication Date |
|---|---|
| CN2931950Y true CN2931950Y (en) | 2007-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620025056 Expired - Fee Related CN2931950Y (en) | 2006-07-21 | 2006-07-21 | Electronic control unit of power assisted system of motorlorry gear box |
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| CN (1) | CN2931950Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158396B (en) * | 2007-10-26 | 2010-04-14 | 山西省电子工业科学研究院 | CPU controlled speed changing box booster system electric-controlled unit |
| CN101614277B (en) * | 2009-07-30 | 2013-01-16 | 中国一拖集团有限公司 | Electrical control unit of tractor dynamic power shift gear box |
| CN111322394A (en) * | 2020-03-03 | 2020-06-23 | 凯博易控车辆科技(苏州)股份有限公司 | Vehicle gear shifting simulation system and method |
-
2006
- 2006-07-21 CN CN 200620025056 patent/CN2931950Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158396B (en) * | 2007-10-26 | 2010-04-14 | 山西省电子工业科学研究院 | CPU controlled speed changing box booster system electric-controlled unit |
| CN101614277B (en) * | 2009-07-30 | 2013-01-16 | 中国一拖集团有限公司 | Electrical control unit of tractor dynamic power shift gear box |
| CN111322394A (en) * | 2020-03-03 | 2020-06-23 | 凯博易控车辆科技(苏州)股份有限公司 | Vehicle gear shifting simulation system and method |
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