Technology for feeding back vehicle motor and controller status by using PWM signal

Abstract

The present invention relates to the field of signal control technologies, and provides a technology for feeding back a vehicle motor and controller status by using a PWM signal. The technology comprises a PWM signal output circuit. The PWM signal output circuit comprises a resistor R42, a resistor R68, a resistor R69, a resistor R43, a triode Q8 and a diode D8. An input end of the resistor R42 iselectrically connected to a transmitting end PWM_O that sends a signal as an MCU, an output end of the resistor R42 is separately connected to a base electrode of the triode Q8 and the resistor R43,and an emitting electrode of the triode is connected to an output end of the resistor R43, and ground processing is performed. A collector electrode of the triode Q8 is separately electrically connected to the resistor R68 and the resistor R69, an input end of the resistor R68 is connected to a voltage input, and the diode D8 is connected between the input end of the resistor R68 and an output endof the resistor R69. According to the technology, different motor and controller statuses are fed back according to different combination of a frequency and a duty ratio, so that not only motor system application costs can be controlled, but also a complete vehicle system can be ensured to monitor a motor and controller real-time running status in real time.

Description

technical field [0001] The invention relates to the technical field of signal control, in particular to a technology for feeding back the state of a vehicle motor and a controller through a PWM signal. Background technique [0002] In the automotive system, more motors and controllers are needed to ensure the operation of the whole vehicle, such as water pumps, oil pumps, fans, wipers, etc. Due to the high cost of the CAN communication system, many speed-adjusting motor controllers are still Using the PWM speed regulation scheme, there is no effective and timely monitoring method for the operating state of the controller. With the vigorous development of electric vehicles, more and more motors will be used in the vehicle system. Motor controller status technology can not only control the application cost of the motor system, but also ensure that the vehicle system can monitor the real-time running status of the motor and controller in real time. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] In the automotive system, more motors and controllers are needed to ensure the operation of the whole vehicle, such as water pumps, oil pumps, fans, wipers, etc. Due to the high cost of the CAN communication system, many speed-adjusting motor controllers are still Using the PWM speed regulation scheme, there is no effective and timely monitoring method for the operating state of the controller. With the vigorous development of electric vehicles, more and more motors will be used in the vehicle system. The motor controller state technology can not only control the application cost of the motor system, but also ensure that the vehicle system can monitor the real-time running status of the motor and the controller in real time

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