CN209813896U - Vehicle control unit circuit - Google Patents
Vehicle control unit circuit Download PDFInfo
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- CN209813896U CN209813896U CN201920648416.2U CN201920648416U CN209813896U CN 209813896 U CN209813896 U CN 209813896U CN 201920648416 U CN201920648416 U CN 201920648416U CN 209813896 U CN209813896 U CN 209813896U
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- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000003750 conditioning effect Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a vehicle control unit circuit, including 32 single chip microcomputers, the modulate circuit, the control, the low limit drive, the high limit drive, CAN transceiver and power, use 32 single chip microcomputers as the center, other modules all are connected with 32 single chip microcomputers, the output and the input of 32 single chip microcomputers of modulate circuit are connected, the modulate circuit includes a plurality of analog signal processing circuit, a plurality of PWM signal processing circuit and a plurality of switching signal processing circuit, analog signal processing circuit, PWM signal processing circuit and switching signal processing circuit are parallel independent each other, analog signal processing circuit, PWM signal processing circuit and switching signal processing circuit constitute by a plurality of resistance and a plurality of electric capacity, do not include diode and triode. The utility model discloses a 32 bit singlechip and peripheral chip are constituteed, powerful, simple structure, cost low relative price, and the control chip CAN ensure singlechip steady operation, has CAN and awakens up the function, CAN realize behind the key outage, and the vehicle is awaken up to the journey.
Description
Technical Field
The utility model belongs to the technical field of motor control, specifically be a vehicle control unit circuit.
Background
The new energy automobile needs the controller to monitor and control the state of the whole automobile so as to ensure the safety and the operational reliability of the new energy automobile. The existing new energy vehicle control unit mostly adopts a 16-bit singlechip as a core processor, and the data processing capacity is limited. In addition, many existing controller systems do not have a module for monitoring the single chip microcomputer, once the single chip microcomputer is halted, a vehicle is not controlled, and certain potential safety hazards exist. For CAN communication, optical coupling isolation chips are used by a plurality of CAN chips, so that the CAN communication is high in cost and has no awakening function, and the CAN communication cannot receive remote data under the condition that a car key is powered off. In addition, many existing conditioning circuits include diodes and transistors, which are costly.
SUMMERY OF THE UTILITY MODEL
The above-mentioned problem to prior art exists, the utility model provides a vehicle control unit circuit adopts 32 bit singlechips and peripheral chip to constitute, powerful, simple structure, low cost relatively, and the control chip CAN ensure the singlechip steady operation, has CAN and awakens up the function, CAN realize after the key outage, the vehicle is awaken up to the journey.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a vehicle control unit circuit, its characterized in that, including 32 single chip microcomputers, the modulate circuit, control, low side drive, high side drive, CAN transceiver and power, use 32 single chip microcomputers as the center, other modules all are connected with 32 single chip microcomputers, the output and the input of 32 single chip microcomputers of modulate circuit are connected, the modulate circuit includes a plurality of analog signal processing circuit, a plurality of PWM signal processing circuit and a plurality of switching signal processing circuit, analog signal processing circuit, PWM signal processing circuit and switching signal processing circuit are parallel independent each other, analog signal processing circuit, PWM signal processing circuit and switching signal processing circuit constitute by a plurality of resistances and a plurality of electric capacity, do not include diode and triode.
Analog signals are input into the analog signal processing circuit through an input end of the analog circuit, the analog signals are output from an output end of the analog circuit, the analog signal processing circuit comprises a seventy-second capacitor, an eighty-second resistor, an eighty-third resistor and a seventy-third capacitor, one end of the seventy-second capacitor, one end of the eighty-second resistor and one end of the eighty-third resistor are connected and then connected with an input end of the analog circuit, the other end of the seventy-second capacitor is connected with an electromagnetic compatibility ground, the other end of the eighty-second resistor is connected with an analog ground, the other end of the eighty-third resistor and one end of the seventy-third capacitor are connected and then connected with an output end of the analog circuit, and the other end of the seventy-third capacitor is connected with the analog ground.
The frequency signal is input into the PWM signal processing circuit through the input end of the PWM circuit, the PWM signal processing circuit is output through the output end of the PWM circuit, the PWM signal processing circuit comprises a thirty-sixth capacitor, a fifty-second resistor, a fifty-third resistor and a thirty-seventh capacitor, one end of the thirty-sixth capacitor is connected with one end of the fifty-second resistor and then connected with the input end of the PWM circuit, the other end of the thirty-sixth capacitor is connected with an electromagnetic compatibility ground, the other end of the fifty-second resistor is connected with one end of the fifty-third resistor and one end of the thirty-seventh capacitor and then connected with the output end of the PWM circuit, and the other end of the fifty-third resistor and the other end of the thirty-seventh capacitor are respectively connected with a digital.
The switch signal processing circuit inputs a switch signal through the input end of the switch circuit and outputs the switch signal through the output end of the switch circuit, the switch signal processing circuit comprises a twenty-fourth capacitor, a thirty-eighth resistor, a thirty-sixth resistor, a thirty-ninth resistor and a twenty-fifth capacitor, one end of the twenty-fourth capacitor is connected with one end of the thirty-eighth resistor and one end of the thirty-sixth resistor, and then connected with the input end of the switch circuit, the other end of the twenty-fourth capacitor is connected with an electromagnetic compatibility ground, the other end of the thirty-eighth resistor is connected with a digital ground, the other end of the thirty-sixth resistor is connected with one end of the thirty-ninth resistor and one end of the twenty-fifth capacitor and then connected with the output end of the switch circuit, and the other end of the thirty-ninth resistor and the other end of the twenty-fifth capacitor are respectively connected with the.
The 32-bit single chip machine, the low side drive and the high side drive are respectively connected with a power supply.
The power module is also connected with a sensor, and provides 5V power supply for the sensor, and the sensor comprises an accelerator pedal sensor for transmitting an accelerator pedal signal and a vacuum pressure sensor for transmitting a brake vacuum pump signal.
The CAN transceiver and the monitor are respectively connected with the 32-bit singlechip in two directions.
The input end of the low-side drive and the input end of the high-side drive are respectively connected with the output end of the 32-bit single chip microcomputer.
The low-side driving circuit comprises a low-side driving chip and a diagnosis circuit, one end of the low-side driving chip is connected with the 32-bit single chip microcomputer, the other end of the low-side driving chip is connected with the execution mechanism, one end of the diagnosis circuit is connected between the low-side driving chip and the execution mechanism, and the other end of the diagnosis circuit is connected with the 32-bit single chip microcomputer.
The actuating mechanism comprises a first actuating mechanism, the diagnostic circuit comprises a first diagnostic circuit, the first diagnostic circuit comprises a Schmidt trigger, a one-hundred sixty-four resistor, a one-hundred sixty-eight resistor and a one-hundred fifty-six capacitor, one end of the one-hundred sixty-four resistor is connected between the low-side driving chip and the first actuating mechanism, the other end of the one-hundred sixty-eight resistor is connected with one end of the one-hundred sixty-eight resistor, one end of the one-hundred fifty-six capacitor and the inlet of the Schmidt trigger, the other end of the one-hundred sixty-eight resistor and the other end of the one-hundred fifty-six capacitor are connected and then connected with a digital ground, and the outlet end of the Schmidt trigger is.
The actuating mechanism further comprises a second actuating mechanism, one end of the low-side driving chip is connected with the 32-bit single chip microcomputer, the other end of the low-side driving chip is connected with the first actuating mechanism and the second actuating mechanism, a first driving channel and a second driving channel which are parallel are formed respectively, the diagnosis circuit further comprises a second diagnosis circuit, one end of the second diagnosis circuit is connected between the low-side driving chip and the second actuating mechanism, and the other end of the second diagnosis circuit is connected with the 32-bit single chip microcomputer.
The power supply module is connected with an external 12V input power supply.
The 32-bit singlechip adopts an SPC560 series singlechip.
The chip of the power supply module is TLE 42754G.
The low-side driver module employs chip BTS3405G and BTS 3410G.
The high-side driver employs chip BTS 5210G. The CAN transceiver adopts chips TJA1043T and TJA 1042T.
The chip MAX6749 is used for monitoring.
And the 32-bit singlechip is connected with other chips through a serial interface and a parallel interface.
Compared with the prior art, the beneficial effects of the utility model are that: the conditioning circuit is composed of a 32-bit singlechip and the peripheral chip, only comprises a resistor and a capacitor, does not comprise a diode and a triode, and has the advantages of strong performance, simple structure, relatively low cost and wide practical range; the 32-bit single chip microcomputer is high in running speed and strong in processing capacity; the monitoring chip can ensure the stable operation of the single chip microcomputer, and the safety and the reliability are greatly improved; the used CAN chip has a CAN awakening function, and CAN awaken the vehicle in a remote way after the key is powered off, so that the system of the controller is upgraded; the low-side driving circuit is provided with a state diagnosis circuit, open circuit and short circuit faults of the low-side driving channel can be identified through software, a Schmitt trigger is used for signal processing, and the stability and reliability of the circuit can be improved.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention;
fig. 2 is a schematic diagram of an analog signal processing circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a PWM signal processing circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a switching signal processing circuit according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a low-side driving circuit according to an embodiment of the present invention.
Detailed Description
The following describes the vehicle control unit circuit provided by the present invention in detail and completely with reference to the embodiments. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention.
A vehicle control unit circuit, as shown in fig. 1, includes seven modules: the device comprises a 32-bit singlechip 1, a conditioning circuit 2, a monitor 3, a low-side driver 4, a high-side driver 5, a CAN transceiver 6 and a power supply 7. The seven circuit modules form a complete vehicle controller circuit through serial or parallel connection, the 32-bit singlechip 1 is used as a center, and other modules are connected with the 32-bit singlechip 1. The power supply 7 module provides power supply for the controller circuit, and specifically, the 32-bit single chip microcomputer 1, the low-side driver 4 and the high-side driver 5 are respectively connected with the power supply 7. The power supply 7 module is connected with an external 12V input power supply, and the power supply 7 module is used for realizing power supply management. The power supply 7 module is also connected with the sensor and provides 5V power supply for the sensor. The sensors comprise an accelerator pedal sensor and a vacuum pressure sensor, wherein the accelerator pedal sensor is used for transmitting signals of an accelerator pedal, and the vacuum pressure sensor is used for transmitting signals of a brake vacuum pump. The output end of the conditioning circuit 2 is connected with the input end of the 32-bit single chip microcomputer 1, the CAN transceiver 6 and the monitor 3 are respectively connected with the 32-bit single chip microcomputer 1 in a bidirectional mode, and the input end of the low-side driver 4 and the input end of the high-side driver 5 are respectively connected with the output end of the 32-bit single chip microcomputer 1.
The input end of the conditioning circuit 2 receives the input of the analog signal, the frequency signal and the switching signal, and is used for realizing the signal acquisition of the switching value, the analog value and the frequency value. As shown in fig. 2 to 4, the conditioning circuit 2 includes a plurality of analog signal processing circuits, a plurality of PWM signal processing circuits, and a plurality of switching signal processing circuits. The analog signal processing circuit, the PWM signal processing circuit and the switching signal processing circuit are parallel and independent to each other and are used for processing an analog signal, a frequency signal and a switching signal respectively. The analog signal, the frequency signal and the switching signal are respectively provided in plurality. Each analog signal is processed by an analog signal processing circuit, and the components of the analog signal processing circuits are the same; each frequency signal is processed through a PWM signal processing circuit, and the components of the PWM signal processing circuits are the same; each switching signal is processed by a switching signal processing circuit, and the components of the switching signal processing circuits are the same. The plurality of analog signals comprise two signals of an accelerator pedal, a signal of a brake vacuum pump and the like, the plurality of frequency signals comprise a vehicle speed signal, an engine rotating speed signal, a motor rotating speed signal and the like, and the plurality of switching signals comprise an air conditioner switching signal, a brake signal and the like. The analog signal processing circuit, the PWM signal processing circuit and the switch signal processing circuit respectively comprise a plurality of discrete devices which are connected, specifically, the analog signal processing circuit, the PWM signal processing circuit and the switch signal processing circuit are composed of a plurality of resistors and a plurality of capacitor elements, and do not comprise elements such as diodes, triodes and the like, the circuit is simple, the performance is stable, and the cost of the circuit is reduced.
For the analog signal processing circuit, as shown in fig. 2, AN analog signal is input to the analog signal processing circuit through AN analog circuit input terminal EXTAN-Spare-5, and after being processed, the analog signal is output to the analog signal processing circuit through AN analog circuit output terminal AN-Spare-5 and then input to the 32-bit single chip microcomputer 1. Specifically, the analog signal processing circuit includes a seventy-second capacitor C72, an eighty-second resistor R82, an eighty-third resistor R83, and a seventy-third capacitor C73. One end of a seventy-second capacitor C72, one end of an eighty-second resistor R82 and one end of an eighty-third resistor R83 are connected and then connected with an analog circuit input end EXTAN-Spare-5, the other end of the seventy-second capacitor C72 is connected with an electromagnetic compatibility ground (EMC ground), and the other end of the eighty-second resistor R82 is connected with an analog ground. The other end of the eighty-three resistor R83 is connected with one end of the seventy-three capacitor C73 and then connected with the output end AN-Spare-5 of the analog circuit, and the other end of the seventy-three capacitor C73 is connected with the analog ground. The seventy-second capacitor C72 and the seventy-third capacitor C73 are both filter capacitors. The eighty-second resistor R82 is a pull-down resistor. The eighty-third resistor R83 is a current limiting resistor and functions to limit and regulate current.
As shown in fig. 3, the PWM signal processing circuit inputs a frequency signal into the PWM signal processing circuit through a PWM circuit input terminal ED-PWM-2, outputs the processed frequency signal from the PWM signal processing circuit through a PWM circuit output terminal ID-PWM-2, and inputs the processed frequency signal into the 32-bit single chip microcomputer 1. Specifically, the PWM signal processing circuit includes a thirty-sixth capacitor C36, a fifty-second resistor R52, a fifty-third resistor R53, and a thirty-seventh capacitor C37. One end of a thirty-sixth capacitor C36 is connected with one end of a fifty-second resistor R52 and then connected with the input end ED-PWM-2 of the PWM circuit, the other end of the thirty-sixth capacitor C36 is connected with the electromagnetic compatibility ground (EMC ground), and the other end of the fifty-second resistor R52 is connected with one end of a fifty-third resistor R53 and one end of a thirty-seventh capacitor C37 and then connected with the output end ID-PWM-2 of the PWM circuit. The other end of the fifty-third resistor R53 and the other end of the thirty-seventh capacitor C37 are respectively connected with digital grounds. And a thirty-sixth capacitor C36 and a thirty-seventh capacitor C37 are used as filter capacitors, and a fifty-second resistor R52 and a fifty-third resistor R53 are voltage dividing resistors and are used for limiting and distributing voltage.
As shown in fig. 4, the switching signal is input to the switching signal processing circuit through the switching circuit input terminal ED-Spare-5, is output to the switching signal processing circuit through the switching circuit output terminal ID-Spare-5 after being processed, and is input to the 32-bit single chip microcomputer 1. Specifically, the switching signal processing circuit includes a twenty-fourth capacitor C24, a thirty-eighth resistor R38, a thirty-sixth resistor R36, a thirty-ninth resistor R39, and a twenty-fifth capacitor C25. One end of a twenty-fourth capacitor C24 is connected with one end of a thirty-eighth resistor R38 and one end of a thirty-sixth resistor R36 and then connected with an input end ED-Spare-5 of the switch circuit, the other end of the twenty-fourth capacitor C24 is connected with an electromagnetic compatibility ground (EMC ground), and the other end of the thirty-eighth resistor R38 is connected with a digital ground. The other end of the thirty-sixth resistor R36 is connected with one end of a thirty-ninth resistor R39 and one end of a twenty-fifth capacitor C25 and then connected with the output end ID-Spare-5 of the switch circuit, and the other end of the thirty-ninth resistor R39 and the other end of the twenty-fifth capacitor C25 are respectively connected with digital ground. The twenty-fourth capacitor C24 is a filter capacitor, and the thirty-eighth resistor R38 is a pull-down resistor.
The CAN transceiver 6 is used for realizing the transceiving processing of CAN signals, the CAN transceiver 6 module receives data of the upper computer and sends the data to the 32-bit singlechip 1, and the 32-bit singlechip 1 transmits parameter signals to the upper computer through the CAN transceiver 6 to realize data communication. The monitor 3 is used to realize monitoring of the 32-bit chip microcomputer 1. The low-side driving 4 module is used for realizing the control of the execution action on the vehicle. The high side drive 5 is used to achieve the high level to the other modules.
The circuit of the low-side driver 4 is shown in fig. 5 and comprises a low-side driver chip U6 and a diagnostic circuit, wherein one end of the driver chip U6 is connected with the 32-bit single chip microcomputer 1, and the other end is connected with an actuating mechanism. One end of the diagnosis circuit is connected between the low-side driving chip U6 and the actuating mechanism, and the other end is connected with the 32-bit single chip microcomputer 1.
The actuator comprises a first actuator and a second actuator, one end of the low-side driving chip U6 is connected with the 32-bit single chip microcomputer 1, the other end of the low-side driving chip U6 is connected with the first actuator and the second actuator, a first driving channel and a second driving channel which are parallel are respectively formed, as shown in FIG. 5, the first driving channel comprises a one-hundred-seventy resistor R170 and a one-hundred-fifty-seven capacitor C157, two ends of the one-hundred-seventy resistor R170 are respectively connected with the 32-bit single chip microcomputer 1 and the low-side driving chip U6, one end of the one-hundred-fifty-seven capacitor C157 is connected with the low-side driving chip U6 and the first actuator, and the other end of the one-hundred-fifty-seven capacitor C157 is electromagnetically compatible. The second driving channel comprises a one-hundred seventy-four resistor R174 and a one-hundred fifty-eight capacitor C158, the one-hundred fifty-eight capacitor C158 is connected with the second actuator, the structural principle of the second driving channel is similar to that of the first driving channel, and the description is omitted here. In this embodiment, the first actuator and the second actuator are respectively a Brake Vacuum Pump and a cooling Pump, and correspondingly, the inlet end DO Brake Vacuum Pump of the first driving channel is connected to the 32-bit single chip microcomputer 1, and the outlet end extoddbrake Vacuum Pump is connected to the Brake Vacuum Pump. The inlet end DO coding Pump of the second driving channel is connected with the 32-bit single chip microcomputer 1, and the outlet end EXTOD coding Pump is connected with the refrigerating Pump.
Correspondingly, the diagnostic circuit in this embodiment includes a first diagnostic circuit and a second diagnostic circuit, which are respectively connected to and diagnose the circuit states of the first driving channel and the second driving channel. The first diagnostic circuit includes a schmitt trigger U4B, a one hundred sixty-four resistor R164, a one hundred sixty-eight resistor R168, and a one hundred fifty-six capacitor C156. One end of a one-hundred sixty-four resistor R164 is connected between the low-side driving chip U6 and the first actuator, the other end of the one-hundred sixty-four resistor R168 is connected with one end of a one-hundred sixty-eight resistor R168, one end of a one-hundred fifty-six capacitor C156 and the inlet of the Schmitt trigger U4B, the other end of the one-hundred sixty-eight resistor R168 and the other end of the one-hundred fifty-six capacitor C156 are connected with the rear end of the digital ground, and the outlet end of the Schmitt trigger U4B is connected with the 32-bit single.
The second diagnostic circuit includes a schmitt trigger U4A, a one hundred eighty resistor R180, a one hundred eighty four resistor R184, and a one hundred sixty eight capacitor C168. One end of the one hundred eighty resistor R180 is connected between the low side driver chip U6 and the second actuator, and the circuit structure principle thereof is the same as that of the first diagnostic circuit, and is not described herein again. In this embodiment, the 32-bit single chip microcomputer 1 is connected to both the first diagnostic circuit and the second diagnostic circuit.
In summary, the fault diagnosis circuit is added to the circuit of the low-side driver 4, for the first diagnosis circuit, R164 and R168 divide the output voltage, the signal enters the schmitt trigger U4B after being filtered by the capacitor C156, the schmitt trigger U4B is a six-reverse schmitt trigger, and the schmitt trigger U4B sends the stable output signal state to the 32-bit single chip microcomputer 1 for state diagnosis.
The diagnostic circuit has the following advantages: firstly, a state diagnosis signal is added, and open-circuit and short-circuit faults are identified through software; and secondly, after the Schmitt trigger is used for signal processing, the stability and the reliability of the circuit can be improved.
Referring to table 1, the diagnostic circuit determines whether open, or short circuit faults are identified as follows (taking the first diagnostic circuit as an example, the first diagnostic circuit determines the same way):
when the 32-bit single chip microcomputer 1 inputs a high level to the low side drive chip U6:
a. if the Schmitt trigger U4B inputs a high level to the 32-bit singlechip 1, the first driving channel is normal;
b. if the schmitt trigger U4B inputs a low level to the 32-bit chip 1, it indicates that the first drive channel is shorted to ground.
When the 32-bit single chip microcomputer 1 inputs a low level to low side driving chip U6:
a. if the Schmitt trigger U4B inputs a low level to the 32-bit singlechip 1, the first driving channel is normal;
b. if the schmitt trigger U4B inputs a high level to the 32-bit chip microcomputer 1, it indicates that the first driving channel is short-circuited or open-circuited to ground.
TABLE 1 diagnostic circuit trouble judgment table
| The control end of the single chip microcomputer is input into U6 | U4A (U4B) is input into the single chip microcomputer | Drive channel state |
| High level | High level | Is normal |
| Low level of electricity | Low level of electricity | Is normal |
| Low level of electricity | High level | Short circuit or open circuit to ground |
| High level | Low level of electricity | Short circuit to earth power |
The 32-bit singlechip 1 adopts an SPC560 series singlechip. The chip of the power supply 7 module is TLE 42754G. The low side drive 4 module employs chip BTS3405G and BTS 3410G. The high side driver 5 employs a chip BTS 5210G. The CAN transceiver 6 employs chips TJA1043T and TJA 1042T. The chip MAX6749 is adopted for the monitoring 3. The 32-bit single chip microcomputer 1 is connected with other chips through a serial interface and a parallel interface.
Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the modifications and adjustments made by those skilled in the art according to the above-mentioned contents of the present invention are all included in the scope of the present invention.
Claims (10)
1. The utility model provides a vehicle control unit circuit, characterized in that, including 32 single chip computer (1), modulate circuit (2), control (3), low side drive (4), high side drive (5), CAN transceiver (6) and power (7), use 32 single chip computer (1) as the center, other modules all are connected with 32 single chip computer (1), the output and the input of 32 single chip computer (1) of modulate circuit (2) are connected, modulate circuit (2) include a plurality of analog signal processing circuit, a plurality of PWM signal processing circuit and a plurality of switch signal processing circuit, analog signal processing circuit, PWM signal processing circuit and switch signal processing circuit are parallel independent each other, analog signal processing circuit, PWM signal processing circuit and switch signal processing circuit constitute by a plurality of resistance and a plurality of electric capacity, do not include diode and triode.
2. The vehicle control unit circuit according to claim 1, wherein: analog signals are input into the analog signal processing circuit through AN analog circuit input end (EXTAN-Spare-5) and output through AN analog circuit output end (AN-Spare-5), the analog signal processing circuit comprises a seventy-second capacitor (C72), AN eighty-second resistor (R82), AN eighty-third resistor (R83) and a seventy-third capacitor (C73), one end of the seventy-second capacitor (C72), one end of the eighty-second resistor (R82) and one end of the eighty-third resistor (R83) are connected and then connected with the analog circuit input end (EXTAN-Spare-5), the other end of the seventy-second capacitor (C72) is connected with electromagnetic compatibility, the other end of the eighty-second resistor (R82) is connected with analog ground, the other end of the eighty-third resistor (R83) and one end of the seventy-third capacitor (C73) are connected and then connected with the analog circuit output end (AN-Spare-5), the other terminal of the seventy-third capacitor (C73) is connected to analog ground.
3. The vehicle control unit circuit according to claim 1, wherein: the frequency signal is input into the PWM signal processing circuit through a PWM circuit input end (ED-PWM-2), the PWM signal processing circuit is output through a PWM circuit output end (ID-PWM-2) and comprises a thirty-sixth capacitor (C36), a fifty-second resistor (R52), a fifty-third resistor (R53) and a thirty-seventh capacitor (C37), one end of the thirty-sixth capacitor (C36) is connected with one end of a fifty-second resistor (R52) and then connected with an input end (ED-PWM-2) of the PWM circuit, the other end of the thirty-sixth capacitor (C36) is connected with electromagnetic compatibility, the other end of the fifty-second resistor (R52) is connected with one end of a fifty-third resistor (R53) and one end of a thirty-seventh capacitor (C37) and then connected with the output end (ID-PWM-2) of the PWM circuit, and the other end of the thirty-third resistor (R53) and the other end of the thirty-seventh capacitor (C37) are respectively connected with digital ground.
4. The vehicle control unit circuit according to claim 1, wherein: a switch signal processing circuit, a switch signal is input into the switch signal processing circuit through a switch circuit input end (ED-Spare-5) and output through a switch circuit output end (ID-Spare-5), the switch signal processing circuit comprises a twenty-fourth capacitor (C24), a thirty-eighth resistor (R38), a thirty-sixth resistor (R36), a thirty-ninth resistor (R39) and a twenty-fifth capacitor (C25), one end of the twenty-fourth capacitor (C24) and one end of the thirty-eighth resistor (R38), one end of the thirty-sixth resistor (R36) are connected and then connected with the switch circuit input end (ED-Spare-5), the other end of the twenty-fourth capacitor (C24) is connected with an electromagnetic compatibility ground, the other end of the thirty-eighth resistor (R38) is connected with a digital ground, the other end of the thirty-sixth resistor (R36) is connected with one end of the thirty-ninth resistor (R39) and one end of the twenty-fifth capacitor (C25) and then connected with the switch circuit output end of the switch circuit The output end (ID-spark-5) is connected, and the other end of the thirty-ninth resistor (R39) and the other end of the twenty-fifth capacitor (C25) are respectively connected with digital ground.
5. The vehicle control unit circuit according to claim 1, wherein: the 32-bit single chip microcomputer (1), the low side driver (4) and the high side driver (5) are respectively connected with a power supply (7).
6. The vehicle control unit circuit according to claim 1, wherein: the CAN transceiver (6) and the monitor (3) are respectively connected with the 32-bit singlechip (1) in a bidirectional way.
7. The vehicle control unit circuit according to claim 1, wherein: the input end of the low-side driver (4) and the input end of the high-side driver (5) are respectively connected with the output end of the 32-bit single chip microcomputer (1).
8. The vehicle control unit circuit according to claim 7, wherein: the low-side drive (4) circuit comprises a low-side drive chip (U6) and a diagnosis circuit, wherein one end of the low-side drive chip (U6) is connected with the 32-bit single chip microcomputer (1), the other end of the low-side drive chip is connected with the execution mechanism, one end of the diagnosis circuit is connected between the low-side drive chip (U6) and the execution mechanism, and the other end of the diagnosis circuit is connected with the 32-bit single chip microcomputer (1).
9. The vehicle control unit circuit according to claim 8, wherein: the actuator comprises a first actuator, the diagnostic circuit comprises a first diagnostic circuit, the first diagnostic circuit comprises a Schmidt trigger (U4B), a one-hundred sixty-four resistor (R164), a one-hundred sixty-eighteen resistor (R168) and a one-hundred fifty-six capacitor (C156), one end of the one-hundred sixty-four resistor (R164) is connected between the low-side driving chip (U6) and the first actuator, the other end of the one-hundred sixty-eight resistor (R168), one end of the one-hundred fifty-six capacitor (C156) and an inlet of the Schmidt trigger (U4B) are connected, the other end of the one-hundred sixty-eight resistor (R168) and the other end of the one-hundred fifty-six capacitor (C156) are connected and then connected to a digital ground, and an outlet end of the Schmidt trigger (U4B) is connected with a 32-bit single chip microcomputer (1).
10. The vehicle control unit circuit according to claim 9, wherein: the actuating mechanism further comprises a second actuating mechanism, one end of the low-side driving chip (U6) is connected with the 32-bit single chip microcomputer (1), the other end of the low-side driving chip is connected with the first actuating mechanism and the second actuating mechanism to form a first driving channel and a second driving channel which are parallel to each other respectively, the diagnosis circuit further comprises a second diagnosis circuit, one end of the second diagnosis circuit is connected between the low-side driving chip (U6) and the second actuating mechanism, and the other end of the second diagnosis circuit is connected with the 32-bit single chip microcomputer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920648416.2U CN209813896U (en) | 2019-05-08 | 2019-05-08 | Vehicle control unit circuit |
Applications Claiming Priority (1)
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