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A start-up circuit of a vehicle-mounted security device

A power-on circuit and circuit technology, which is applied to circuits, circuit devices, battery circuit devices, etc., can solve the problems of unfavorable power-on mode, energy-saving and convenient power-on, and achieve the effect of flexible power on and off.

Active Publication Date: 2019-04-05
SHENZHEN STREAMING VIDEO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a start-up circuit for vehicle-mounted security equipment to solve the problem that the start-up method of security equipment in the prior art is not conducive to energy saving or easy to start

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  • A start-up circuit of a vehicle-mounted security device
  • A start-up circuit of a vehicle-mounted security device
  • A start-up circuit of a vehicle-mounted security device

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The purpose of the embodiment of the present invention is to add a key-press start-up method on the basis of the original ignition start-up or timing signal start-up, so that the start-up method is more flexible, and the power-saving state can be effectively entered in the shutdown state. Such as figure 1 As shown, the boot circuit of the security equipment in the prior art includes an ignition switch circuit and an RTC timing circuit. When the ignition switch signal is detected or the RTC timing circuit signal is detected, the DC-DC power supply circuit is powered on for the controller to c...

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Abstract

A power-on circuit for an on-vehicle security device, the power-on circuit comprising a key state holding circuit, a power supply enabling circuit, a key state notifying circuit, a capacitor discharging circuit, and a self-powering controlling circuit. According to the present invention, pressed-down state information of the key is recorded by means of capacitor charging of the key state holding circuit, the key state information is transmitted to a controller by means of the key state notifying circuit, and the controller is caused to enter a work state by means of the power supply enabling circuit; when the controller detects a valid trigger, the power supply to the controller is held by means of the self-powering controlling circuit, and the capacitor of the key state holding circuit is discharged by means of the capacitor discharging circuit, such that the present invention can more flexibly realize the power on and power off of the on-vehicle security device, and cause the device to effectively enter an energy-saving state in a power-off state.

Description

technical field [0001] The invention belongs to the security field, and in particular relates to a start-up circuit of a vehicle-mounted security device. Background technique [0002] At present, there are mainly two ways to start the vehicle security equipment: ignition start-up and timing start-up. The ignition start method is to use the vehicle ignition signal to start the device. It is necessary to use the car key to start the vehicle before the device can be started. The timing boot method is to use the built-in RTC (English full name Real-Time Clock, Chinese full name real-time clock) timing chip to start the boot. In this way, the user presets the boot time. When the actual time reaches the specified setting, the device start up. [0003] The above two methods can basically meet the daily work needs of the equipment. But when the device needs maintenance, such as software upgrade, video export, etc., these two startup methods are not very convenient. The maintenan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/96H03K17/60
CPCH02J7/00
Inventor 范章华
Owner SHENZHEN STREAMING VIDEO TECH
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