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Detection and protection device for interface falling-off fault in photoelectric galvanometer system

A protection device, photoelectric technology, applied in the direction of automatic disconnection emergency protection device, emergency protection circuit device, circuit device, etc., can solve the problem of judging module malfunction, non-action, etc., to achieve the effect of being less susceptible to interference

Pending Publication Date: 2022-04-05
北京市汉华环球科技发展有限责任公司
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AI Technical Summary

Problems solved by technology

[0008] This application provides a detection and protection device for interface drop-off faults in a photoelectric galvanometer system to solve the problem that the original oscillating mirror interface drop-off fault judgment module malfunctions or does not operate when the voltage preset threshold is not set properly.

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  • Detection and protection device for interface falling-off fault in photoelectric galvanometer system
  • Detection and protection device for interface falling-off fault in photoelectric galvanometer system
  • Detection and protection device for interface falling-off fault in photoelectric galvanometer system

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Embodiment Construction

[0045] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the claims.

[0046] Wherein, it should be noted that, in order to solve the technical problems described in the background technology, the present invention is based on the same idea for such figure 2 The schematic diagram of the detection and protection device for interface shedding fault in a vibrating mirror system (analog driver) has been improved and improved for the digital driver based on CPU control.

[0047] Further, the presen...

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Abstract

The invention relates to the technical field of galvanometer scanning, in particular to a detection and protection device for an interface falling-off fault in a photoelectric galvanometer system. According to the driver interface falling-off fault judgment module provided by the invention, the judgment on the falling-off fault of the galvanometer interface is realized by judging the partial voltage of the laser diode of the galvanometer and the current-limiting resistor R7 or the voltage representing the input current intensity of the positive electrode of the laser diode and the set threshold value. The two voltage signals are large in effective value and high in signal-to-noise ratio, do not pass through a long transmission line, and are not easy to be interfered. The problems that in an original driver interface falling-off fault judgment module, the input voltage amplitude is small, the input voltage amplitude is affected by the deflection position of a galvanometer, when a transmission cable is long, interference is likely to happen, a galvanometer sensor with the low signal-to-noise ratio outputs a voltage signal at a single end, and when a voltage preset threshold value is not set at proper time, the galvanometer sensor cannot output the voltage signal at the single end are solved. And the problem that an original galvanometer interface falling-off fault judgment module malfunctions or does not act is solved.

Description

technical field [0001] The present application relates to the technical field of galvanometer scanning, in particular to a detection and protection device for an interface drop-off fault in a photoelectric galvanometer system. Background technique [0002] A laser scanning system based on a galvanometer is usually composed of an application controller, a galvanometer, a galvanometer driver, a laser, and a power supply. The main function of the system is based on the requirements of the application scenario, such as: industrial laser marking or medical laser dot matrix In application scenarios such as treatment, the application controller generates and sends a series of continuous or discrete galvanometer angle commands to the galvanometer driver, and the galvanometer driver controls the galvanometer to deflect to a preset angle after receiving the galvanometer angle command. After the angle is preset, the application controller controls the laser to emit laser light, and per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H5/10H02H7/08H02H7/085
Inventor 李言冯伟闻峰
Owner 北京市汉华环球科技发展有限责任公司
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