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Protection module and electronic device

A technology to protect modes and circuits, applied in circuits, electrical components, phonon exciters, etc., can solve the problem of continuous emission of laser sources

Active Publication Date: 2018-11-30
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a protection module and electronic equipment to solve the problem that the laser source in the TOF system may be in a continuous emission state in the prior art

Method used

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  • Protection module and electronic device

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Embodiment Construction

[0021] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0022] Such as figure 1 The embodiment of the present invention provides an example of a protection module. The protection module is applied to a TOF system, and the TOF system includes: a laser emission controller 1 and a laser lamp 2.

[0023] The protection module includes: a switch unit 3 and a control unit 4.

[0024] The switch unit 3 is connected to the laser emission controller 1 and the laser lamp 2; the co...

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Abstract

The invention discloses a protection module and an electronic device, wherein the protection module is applied to a TOF system; the TOF system comprises a laser emission controller and a laser lamp; the protection module comprises a switch unit and a control unit; the switch unit is connected to the laser emission controller and the laser lamp; the control unit is connected to the laser emission controller and the switch unit, wherein the control unit is configured to control the switch unit to be turned on and off when detecting the duration of a transmission signal of the lase emission controller is greater than a first threshold. The protection module and the electronic device in the invention can prevent the laser emission controller from being continuously in an emission state, whichmay cause personal safety hazards after the laser is directly emitted to the human eyes or sensitive parts and can also prevent the laser lamp from continuing to emit at a high power, which may causethe temperature of the laser lamp to be too high to burn the circuit board, the laser light and the like.

Description

Technical field [0001] The embodiments of the present invention relate to the technical field of electronic products, and in particular to a protection module and electronic equipment. Background technique [0002] The Time of Flight (TOF) method is to continuously send laser pulses to the target object, then use the sensor to receive the light returned from the target object, and determine the target object by detecting the flight (round trip) time of the laser pulse , And then obtain the 3D data image of the measured target object. The TOF system has the advantages of low environmental impact, fast calculation speed, and low power consumption. It can be used in autonomous driving, virtual reality (VR), telemedicine, and so on. [0003] The TOF system uses a laser source of about 850nm as the emission source, and the power is very large during emission, about 20,000. During the working process of the TOF system, there may be abnormal conditions that may cause the laser source to...

Claims

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Application Information

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IPC IPC(8): H01S5/042G08B21/18
CPCG08B21/185H01S5/042
Inventor 张潮红
Owner VIVO MOBILE COMM CO LTD