Low power consumption and high stability laser temperature closed-loop control system and method
A temperature closed-loop and control system technology, applied in the field of lasers, can solve the problems of unsuitable low-power engineering application environment and large temperature measurement drift, so as to improve environmental adaptability, ensure temperature control stability, and reduce temperature measurement drift. Effect
Active Publication Date: 2022-03-11
BEIJING AUTOMATION CONTROL EQUIP INST
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[0004] The invention provides a low power consumption and high stability laser temperature closed-loop control system and method, which can solve the problem that the laser temperature control system in the prior art has large temperature measurement drift and is not suitable for engineering application environments with low power consumption and low temperature drift. question
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[0021] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0022] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit t...
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The invention provides a low power consumption and high stability laser temperature closed-loop control system and method. The system includes a voice chip, an unbalanced bridge, an instrument amplifier and a power amplifier. The voice chip includes a first DAC circuit, a dual-channel ADC circuit, a second Two DAC circuits and a DSP core processor, the unbalanced bridge is connected to the thermistor and the first DAC circuit respectively, the instrumentation amplifier is connected to the unbalanced bridge, the dual-channel ADC circuit is connected to the first DAC circuit and the instrumentation amplifier respectively, and the DSP The core processor calculates and obtains the temperature control voltage signal according to the bridge excitation signal and the amplified bridge output signal, the power amplifier is connected to the second DAC circuit, and the power amplifier is used to amplify the temperature control voltage signal and excite the Electric heater. The technical scheme of the invention is applied to solve the technical problem in the prior art that the temperature measurement drift of the laser temperature control system is relatively large, and it is not suitable for the engineering application environment with low power consumption and low temperature drift.
Description
technical field [0001] The invention relates to the technical field of lasers, in particular to a low-power consumption and high-stability laser temperature closed-loop control system and method. Background technique [0002] VCSEL lasers are used for atomic drive and signal detection of atomic magnetometers and atomic gyroscopes. Their temperature stability directly affects the stability of laser frequency, thereby affecting the stability of sensor magnetic field measurement and closed-loop control, which restricts atomic gyroscopes and magnetometers. Increased precision. [0003] The AC temperature measurement method is to use a single thermistor as a temperature sensitive element, and use an unbalanced AC bridge to differentially detect the change in the amplitude of the AC voltage caused by the change in the resistance of the thermistor, thereby realizing temperature measurement; Adjustable sinusoidal signal for driving. The traditional amplitude demodulation method us...
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IPC IPC(8): G05D23/24H01S5/183
CPCG05D23/24H01S5/183
Inventor 秦杰薛帅万双爱刘建丰
Owner BEIJING AUTOMATION CONTROL EQUIP INST