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Power supply method, power supply circuit and law enforcement recorder

A technology of law enforcement recorder and power supply circuit, which is applied in the direction of terminal battery switching device, etc., can solve the problems of large space occupation and high cost, and achieve the effects of suppressing electromagnetic interference, reducing system cost and space occupation, and long battery life

Pending Publication Date: 2021-02-12
杭州叙简未兰电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, in order to maintain the normal use of the law enforcement recorder, at least the main battery, the backup battery and the RTC battery are required, resulting in a higher system cost and a large space occupation of the entire law enforcement recorder

Method used

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  • Power supply method, power supply circuit and law enforcement recorder
  • Power supply method, power supply circuit and law enforcement recorder
  • Power supply method, power supply circuit and law enforcement recorder

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Embodiment Construction

[0033] The present invention will be described in more detail below in conjunction with the accompanying drawings. It should be noted that the following description of the present invention with reference to the accompanying drawings is only illustrative rather than limiting. Different embodiments can be combined with each other to form other embodiments not shown in the following description.

[0034] see figure 1 and image 3 In one embodiment of the present invention, a new type of law enforcement recorder is provided. The built-in structure of the law enforcement recorder is simple, and the long battery life of the RTC clock circuit can be realized without an RTC battery. The system cost is low and the space occupied is small. Has good applicability.

[0035] The power supply circuit of the law enforcement recorder at least includes: a backup battery unit 10, a voltage conversion circuit and an RTC clock circuit. The backup battery unit 10 is electrically connected to t...

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Abstract

The invention relates to a power supply method. The power supply method is applied to a law enforcement recorder. The method comprises the following steps of: stabilizing a first voltage to generate astabilized voltage; filtering the stabilized voltage to generate a filtered voltage; and transmitting the filtering voltage to an RTC clock circuit. The invention further provides a power supply circuit and a law enforcement recorder with the power supply circuit. According to the technical schemes, the first voltage is stabilized, so that the stabilized voltage is obtained; the stabilized voltage is filtered, and then the filtered voltage is supplied to the RTC clock circuit; and therefore, electromagnetic interference can be effectively suppressed, the RTC clock circuit can be continuouslysupplied with power after a main battery unit is pulled out, the requirement for long endurance time of the RTC clock circuit can be met without an RTC battery, and the system cost and space occupation can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of law enforcement equipment, in particular to a power supply method, a power supply circuit and a law enforcement recorder. Background technique [0002] Law enforcement recorder, also known as on-site law enforcement image recorder, is a portable terminal that integrates photo, audio and video recording functions. It can digitally record dynamic and static on-site conditions during the law enforcement process, which is convenient for police officers to use in law enforcement in various environments. In order to meet the demand for long battery life, body-worn cameras usually use a replaceable main battery, and a built-in non-removable backup battery to maintain its power supply during the main battery replacement process, so that video forensics records will not be damaged due to the replacement of the main battery. And interrupt. [0003] At present, an RTC (Real-Time Clock) clock circuit is usually inst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/36
CPCH02J7/36
Inventor 江小庆
Owner 杭州叙简未兰电子有限公司
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