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Automatic control system for humidity and temperature of working environment of non-airtight-sealing laser device

An automatic control system and working temperature technology, applied in the direction of control/regulation system, non-electric variable control, laser, etc., can solve the problems of reducing the reliability and life of laser, so as to increase the reliability of work, improve high-speed performance, expand Effect of Operating Temperature Range

Pending Publication Date: 2018-01-26
成都光创联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-hermetic packaging brings problems. Non-hermetic packaging causes the laser to be exposed to humidity beyond the working range of the laser for a long time, which will reduce the reliability and life of the laser.

Method used

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  • Automatic control system for humidity and temperature of working environment of non-airtight-sealing laser device
  • Automatic control system for humidity and temperature of working environment of non-airtight-sealing laser device
  • Automatic control system for humidity and temperature of working environment of non-airtight-sealing laser device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 and figure 2 As shown, a non-hermetic packaging laser working environment temperature automatic control system of the present invention includes: a heating coil 5 embedded in the laser carrier PCB and located below the laser 3, and also includes: a thermistor 4, a sampling resistor R1 , the first analog-to-digital converter ADC1, the micro control unit 1, the coil heating driver 2; the thermistor 4 is placed next to the laser for sensing the operating temperature of the laser, the first end of the thermistor 4 is connected to a reference voltage, and the thermistor 4. The second end is connected to the first end of the sampling resistor, and the second end of the sampling resistor is grounded; the second end of the thermistor 4 is also connected to the micro-control unit 1 through the first analog-to-digital converter ADC1, and the micro-control unit 1 The heating coil 5 is controlled by the coil heating driver 2 to work.

[0027] The laser in this e...

Embodiment 2

[0031] Such as image 3 As shown, a non-hermetic packaging laser working environment humidity automatic control system of the present invention includes: a heating coil 5 embedded in the laser carrier PCB and located below the laser 3, and also includes: a humidity sensor 7, a second modulus Converter ADC2, micro control unit 1, coil heating driver 2; humidity sensor 7 is placed next to the laser for sensing the working humidity of the laser, and humidity sensor 7 is connected to micro control unit 1 through the second analog-to-digital converter ADC2, and the micro control The unit 1 controls the heating coil 5 to work through the coil heating driver 2 .

[0032] The working principle is: the humidity sensor 7 is installed close to the laser 3, and the humidity sensor 7 senses the working humidity of the laser 3; the micro-control unit 1 obtains the current working humidity of the laser according to the signal sent by the second analog-to-digital converter ADC2, when When it...

Embodiment 3

[0035] Such as Figure 4 As shown, the non-hermetically sealed laser working environment temperature and humidity automatic control system includes: a heating coil 5 embedded in the laser carrier PCB and located under the laser 3, and also includes: a thermistor 4, a humidity sensor 7, and a sampling resistor R1, a first analog-to-digital converter ADC1, a second analog-to-digital converter ADC2, a micro control unit 1, and a coil heating driver 2;

[0036] The thermistor 4 is placed next to the laser for sensing the working temperature of the laser, the first end of the thermistor 4 is connected to the reference voltage, the second end of the thermistor 4 is connected to the first end of the sampling resistor R1, and the second end of the sampling resistor R1 is grounded ; The second end of the thermistor 4 is also connected to the micro control unit 1 through the first analog-to-digital converter ADC1, and the micro control unit 1 controls the heating coil 5 to work through ...

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Abstract

The invention discloses an automatic control system for the humidity and the temperature of a working environment of the non-airtight-sealing laser device, which is applied to the field of photoelectric devices. A thermistor which is arranged beside the laser device and is used for inducing the working temperature of the laser device is used for obtaining the current working temperature of the laser device; when the temperature of the laser device is lower than a certain pre-set value, a coil heating driver is started up to heat so that the temperature of the laser device is raised; when the temperature of the laser device exceeds a certain pre-set value, the coil heating driver is switched off to control the fluctuation of the temperature, so that a working temperature range of the laserdevice is expanded when compared with that of an original product; the working temperature range of the similar laser device can be expanded to -40 DEG C to 85 DEG C from 0 to 85 DEG C; the working humidity of the laser device is obtained through a humidity sensor; when the working humidity is too great, a heating coil is controlled to work; when the working humidity returns to a normal range, theheating coil is cut off, so that the laser device is controlled to work in the normal humidity range, and the working reliability and the service life of the laser device are ensured.

Description

technical field [0001] The invention belongs to the field of optoelectronic devices for optical communication and optical interconnection, in particular to a technology based on embedded PCB coil heating to extend the low temperature range application of lasers. Background technique [0002] With the continuous development of semiconductor technology, solid-state lasers pumped by semiconductor lasers have developed rapidly in recent years due to the dual advantages of laser diodes and solid-state lasers, and have been widely used in military, communication, processing and scientific research fields. . It has a wide range of applications in long-distance communication, laser radar, digital signal storage and recovery, laser ranging, robotics, holographic applications, medical diagnosis, etc. However, the semiconductor laser is a device with high power density and extremely high quantum efficiency, which requires very harsh working conditions. Under improper working or stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D27/02
CPCH01S3/02H01S5/02453
Inventor 贺明寿许远忠张强李惠敏
Owner 成都光创联科技有限公司
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