A Noise Reduction Temperature Control System Based on Semiconductor Refrigeration Mechanism
A technology of temperature control system and refrigeration system, which is applied in the direction of using electric method for temperature control, auxiliary controller with auxiliary heating device, etc., which can solve the problems of chip damage, water vapor condensation, etc.
Active Publication Date: 2017-04-19
吴丹
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Problems solved by technology
The data shows that around room temperature, the dark current noise of the CCD caused by the temperature can be reduced by an order of magnitude for every 10°C drop in temperature, but the low temperature puts forward requirements on the vacuum sealing of the probe and the refrigeration equipment. thereby seriously damaging the chip
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[0024] Such as figure 1It is the overall block diagram of the noise reduction temperature control system. The noise reduction temperature control system includes a heat dissipation system, a refrigeration system and a temperature control system; the heat dissipation system uses heat pipe fins, and the refrigeration system includes a circuit chip, a semiconductor refrigerator and a temperature sensor, the package temperature control system includes a drive circuit, D / A conversion, single-chip microcomputer and temperature display; the heat pipe cooling fin is connected to the semiconductor refrigerator, and the drive circuit is connected to the semiconductor refrigerator and the D / A Between the A conversion modules; the single-chip microcomputer is connected with the temperature sensor, D / A conversion and temperature display module at the same time; the middle part of the PCB board of the circuit chip is a hollow structure, and the cold end of the semiconductor refrigerator is d...
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The invention discloses a noise reduction and temperature control system based on a semiconductor refrigeration mechanism. The noise reduction and temperature control system based on the semiconductor refrigeration mechanism comprises a heat radiating system, a refrigeration system and a temperature control system. The heat radiating system adopts a heat tube heat radiating fin, the refrigeration system comprises a circuit chip, a semiconductor refrigerator and a temperature sensor, and the temperature control system comprises a driving circuit, a D / A converter, a single chip microcomputer and a temperature displayer. The noise reduction and temperature control system is designed based on the Peltier effect and can create a low-temperature working environment for a circuit chip, reduce multiple types of noise relevant with the temperature, effectively improve signal to noise ratio and widen a dynamic range. The noise reduction and temperature control system based on the semiconductor refrigeration mechanism is simple in structure and low in cost and has the advantages of being free of refrigerants, good in environment-friendly performance, free of moving parts, low in vibration and noise and the like.
Description
technical field [0001] The invention belongs to the technical field of power electronic temperature control applications, and in particular relates to a noise reduction temperature control system based on a semiconductor refrigeration mechanism. Background technique [0002] Semiconductor refrigeration is also called thermoelectric refrigeration or thermoelectric refrigeration. It is an artificial refrigeration technology based on the Peltier effect. Compared with conventional mechanical refrigeration, it has many advantages, such as no refrigerant, good environmental protection; no moving parts, low vibration and noise; high refrigeration coefficient when cooling with low power; convenient cooling and heat conversion; fast cooling speed , quick response, can quickly realize large temperature difference; good adjustment performance; easy to miniaturize, etc. Therefore, semiconductor refrigeration has opened up a new field of refrigeration technology and expanded the applica...
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IPC IPC(8): G05D23/30
Inventor 徐云鹏
Owner 吴丹