CN-115912886-B - On-off control system and vehicle-mounted product

CN115912886BCN 115912886 BCN115912886 BCN 115912886BCN-115912886-B

Abstract

The invention discloses a startup and shutdown control system and a vehicle-mounted product. The system comprises a switch module, a switch state detection module, a first enabling module, a second enabling module, a power supply output module and a control module, wherein the switch state detection module is used for outputting a first level signal when the switch module is in a closed state and outputting a second level signal when the switch module is in an open state, the first enabling module is used for outputting the first enabling signal when the switch state detection module outputs the first level signal, the control module is used for outputting the second level signal when the switch state detection module receives a data storage completion signal or the time length of outputting the second level signal reaches a preset time length, the second enabling module is controlled to output the second enabling signal, and the power supply output module is used for outputting a power supply voltage when the first enabling signal is received and stopping outputting the power supply voltage when the second enabling signal is received. The invention realizes that the vehicle-mounted product is powered off after the data storage is completed.

Inventors

ZHUANG SHAOHUA
CHEN WENMING
JIANG CHANGBEI

Assignees

深圳市华宝电子科技有限公司

Dates

Publication Date: 20260505
Application Date: 20221121

Claims (10)

1. The on-off control system is characterized by comprising a switch module, a switch state detection module, a first enabling module, a second enabling module, a power output module and a control module; The switch state detection module is connected with the switch module and is used for outputting a first level signal when the switch module is in a closed state and outputting a second level signal when the switch module is in an open state; the first enabling module is connected with the switch state detection module, and is connected with the control end of the power output module, and the first enabling module is used for outputting a first enabling signal to the power output module when the switch state detection module outputs the first level signal; the control module is connected with the switch state detection module, the control module is connected with the control end of the second enabling module, the second enabling module is connected with the control end of the power output module, the control module is used for outputting the second level signal by the switch state detection module, and when a data storage completion signal of the equipment to be powered or the time length of outputting the second level signal by the switch state detection module reaches a preset time length, the second enabling module is controlled to output the second enabling signal to the power output module; The first end of the power output module is connected with a first power supply, the second end of the power output module is connected with the power end of the equipment to be powered, and the power output module is used for outputting a power supply voltage to the equipment to be powered when receiving the first enabling signal or stopping outputting the power supply voltage when receiving the second enabling signal so as to enable the equipment to be powered off.
2. The on-off control system of claim 1, further comprising an input voltage detection module; The first end of the input voltage detection module is connected with the first power supply, the second end of the input voltage detection module is connected with the control end of the power supply output module, the input voltage detection module is used for outputting a third enabling signal to the power supply output module when the first power supply voltage provided by the first power supply is larger than a first preset voltage, and the power supply output module is used for stopping outputting the power supply voltage when receiving the third enabling signal.
3. The power on/off control system according to claim 1, wherein the control module is further connected to the first power source or the second end of the power output module, and the control module is configured to control the second enable module to output a second enable signal to the power output module when a first power voltage provided by the first power source or a power supply voltage output by the power output module is less than a second preset voltage.
4. The on-off control system of claim 1, further comprising an electrostatic protection module; The first end of the static protection module is connected with a second power supply, and the second end of the static protection module is connected with the switch state detection module.
5. The on-off control system of claim 1, wherein the first enabling module comprises a first transistor and a second transistor; the control electrode of the first transistor is connected with the switch state detection module, the first electrode of the first transistor is grounded, and the second electrode of the first transistor is connected with the control electrode of the second transistor; The first pole of the second transistor is connected with a second power supply, the second pole of the second transistor is connected with the first power supply, and the second pole of the second transistor is also connected with the control end of the power supply output module.
6. The power on/off control system of claim 1, wherein the second enabling module comprises a third transistor; The control electrode of the third transistor is connected with the control module, the first electrode of the third transistor is grounded, and the second electrode of the third transistor is connected with the control end of the power output module.
7. The on-off control system of claim 1, wherein the power output module comprises a fourth transistor; The control electrode of the fourth transistor is connected with the first enabling module, the control electrode of the fourth transistor is also connected with the second enabling module, the first electrode of the fourth transistor is connected with the first power supply, and the second electrode of the fourth transistor is connected with the equipment to be powered.
8. The on-off control system of claim 1, further comprising an energy storage module; The control end of the power output module is connected with the first power supply through the energy storage module.
9. The on-off control system of claim 1, further comprising a first filtering module; The second end of the power output module is connected with the first filtering module.
10. A vehicle-mounted product comprising the on-off control system according to any one of claims 1 to 9.

Description

On-off control system and vehicle-mounted product Technical Field The invention relates to the technical field of control, in particular to a startup and shutdown control system and a vehicle-mounted product. Background With the rapid development of automobiles, on-board products (e.g., touch screens, etc.) inside automobiles are increasing. When the on-off button of the existing vehicle-mounted product is pressed, the vehicle-mounted product can be controlled to be directly started or directly shut down. When the vehicle-mounted product is directly powered off, the data is not stored yet, and the problems of data loss, program loss and the like can occur, so that the stability and the reliability of the vehicle-mounted product are poor. Disclosure of Invention The invention provides a startup and shutdown control system and a vehicle-mounted product, which are used for realizing shutdown of the vehicle-mounted product after data storage is completed so as to improve the stability and reliability of the vehicle-mounted product. According to one aspect of the invention, a startup and shutdown control system is provided, which comprises a switching module, a switching state detection module, a first enabling module, a second enabling module, a power output module and a control module; The switch state detection module is connected with the switch module and is used for outputting a first level signal when the switch module is in a closed state and outputting a second level signal when the switch module is in an open state; the first enabling module is connected with the switch state detection module, and is connected with the control end of the power output module, and the first enabling module is used for outputting a first enabling signal to the power output module when the switch state detection module outputs the first level signal; the control module is connected with the switch state detection module, the control module is connected with the control end of the second enabling module, the second enabling module is connected with the control end of the power output module, the control module is used for outputting the second level signal by the switch state detection module, and when a data storage completion signal of the equipment to be powered or the time length of outputting the second level signal by the switch state detection module reaches a preset time length, the second enabling module is controlled to output the second enabling signal to the power output module; The first end of the power output module is connected with a first power supply, the second end of the power output module is connected with the power end of the equipment to be powered, and the power output module is used for outputting a power supply voltage to the equipment to be powered when receiving the first enabling signal or stopping outputting the power supply voltage when receiving the second enabling signal so as to enable the equipment to be powered off. Optionally, the on-off control system further comprises an input voltage detection module; The first end of the input voltage detection module is connected with the first power supply, the second end of the input voltage detection module is connected with the control end of the power supply output module, the input voltage detection module is used for outputting a third enabling signal to the power supply output module when the first power supply voltage provided by the first power supply is larger than a first preset voltage, and the power supply output module is used for stopping outputting the power supply voltage when receiving the third enabling signal. Optionally, the control module is further connected to the first power supply or the second end of the power output module, and is configured to control the second enabling module to output a second enabling signal to the power output module when the first power supply voltage provided by the first power supply or the power supply voltage output by the power output module is smaller than a second preset voltage. Optionally, the on-off control system further comprises an electrostatic protection module; The first end of the static protection module is connected with a second power supply, and the second end of the static protection module is connected with the switch state detection module. Optionally, the first enabling module includes a first transistor and a second transistor; the control electrode of the first transistor is connected with the switch state detection module, the first electrode of the first transistor is grounded, and the second electrode of the first transistor is connected with the control electrode of the second transistor; The first pole of the second transistor is connected with a second power supply, the second pole of the second transistor is connected with the first power supply, and the second pole of the second transistor is also connected with the control end of the power supply output module