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Temperature control system of analog-to-digital conversion circuit

A technology of analog-to-digital conversion circuit and temperature control system, which is applied in the direction of temperature control by electric method, auxiliary controller with auxiliary heating device, etc., and can solve problems such as high cost, complex structure, and interference of analog-to-digital conversion circuits. , to achieve good electromagnetic environment, reduce electromagnetic interference, and low power consumption

Inactive Publication Date: 2020-12-04
BEIJING AUTOMATION CONTROL EQUIP INST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] At present, temperature control is mainly carried out by means of TEC, compressor, fan, liquid cooling, etc. These methods are large in size, complex in structure and high in cost, and the temperature control accuracy cannot meet the needs of the conversion circuit, and will introduce interference to the analog-to-digital conversion circuit and affect conversion precision

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  • Temperature control system of analog-to-digital conversion circuit

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] In one embodiment of the present invention, as figure 1 As shown, a temperature control system of an analog-to-digital conversion circuit includes a small temperature field, an analog-to-digital conversion circuit, a temperature control device, a heating device, and a heat dissipation device. The small temperature field is composed of a heat sink; the temperature control device uses a digital PID algorithm for temperature control and outputs heating power; the heating device uses a thin film heating sheet to heat the system; the heat dissipation device uses a thermal pad for natural heat dissipation .

[0019] The analog-to-digital conversion circuit includes a microprocessor, and the temperature control device multiplexes the processor to run the PID algorithm, integrates the temperature control and the analog-to-digital conversion circuit, sim...

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Abstract

The invention provides a temperature control system of an analog-to-digital conversion circuit. The temperature control system comprises a small temperature field, a temperature control device, a heating device and a heat dissipation device, wherein the small temperature field is formed by heat sink; the temperature control device adopts a microprocessor in the analog-to-digital conversion circuitto perform digital PID calculation and outputs heating power to the heating device; the heating device is used for heating the heat sink by using a thin film heating sheet; and the heat dissipation device selects a heat conduction pad for natural heat dissipation. According to the temperature control system, the heat balance between heat production and heat dissipation is realized by using a simple and efficient method under the limitations of volume, power consumption, electromagnetic interference and the like, so that the temperature control with the precision of 0.05 DEG C is realized within the temperature range of 65-85 DEG C.

Description

technical field [0001] The invention belongs to the technical field of temperature control, and in particular relates to a small cavity temperature control system of an analog-to-digital conversion circuit. Background technique [0002] The weak analog signal output by the gravimeter needs to be converted into a digital signal through a high-precision analog-to-digital conversion circuit, and the operating parameters of the analog device have a large correlation with the ambient temperature. To ensure sufficient accuracy of the analog-to-digital conversion circuit, it is necessary to It provides a fairly stable temperature field environment. In practice, the volume provided to the temperature control system is limited (70*9*58mm3), so designing a temperature control system with high integration, small size, and high precision has become an urgent problem to be solved. [0003] At present, temperature control is mainly carried out by means of TEC, compressor, fan, liquid coo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/30
CPCG05D23/30
Inventor 储昭华赵振涌袁寰李婷婷
Owner BEIJING AUTOMATION CONTROL EQUIP INST
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