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Single chip microcomputer and multi-way analog switch controlled wide temperature range high and low temperature recycle unit

A multi-channel analog switch, high and low temperature cycle technology, applied in computer control, lighting and heating equipment, simulators, etc., can solve the problem of insufficient analog channels, etc., and achieve low cost, strong operability, and good stability Effect

Inactive Publication Date: 2007-03-14
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the temperature cycle test, sometimes it is necessary to regularly monitor the resistance of each photosensitive element, and the analog channels of the general data acquisition card are often not enough, so it is necessary to increase the number of analog channels to meet the needs of the test or engineering tasks

Method used

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  • Single chip microcomputer and multi-way analog switch controlled wide temperature range high and low temperature recycle unit
  • Single chip microcomputer and multi-way analog switch controlled wide temperature range high and low temperature recycle unit
  • Single chip microcomputer and multi-way analog switch controlled wide temperature range high and low temperature recycle unit

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Embodiment Construction

[0029] Below in conjunction with Fig. 1~Fig. 10 provide preferred embodiment of the present invention and make further detailed description:

[0030] This embodiment includes two parts: 1. Single-chip microcomputer control of the stepper motor and automatic liquid nitrogen infusion; 2. Expansion of the analog channel of the acquisition card.

[0031] Details are as follows:

[0032] A. About the circuit structure of the equipment of this embodiment

[0033] (1) Single-chip microcomputer control of stepping motor

[0034] As shown in Figure 1, the P3.2 (INT0 interrupt) port of the single-chip microcomputer chip U1 is externally connected with a switch K1, which is used to realize the manual and automatic control switching of the stepping motor. Ports P3.0, P3.1, P3.6 and P3.7 are respectively connected with external switches K2, K3, K4 and K5, which are used to set the direction and distance of each movement of the motor.

[0035] The temperature feedback signal on the heat ...

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Abstract

The wide-range high-low temperature cycle device comprises: a SCM to control step motor and auto liquid-nitrogen supplying, and multiplex analog switch around a data acquisition card to enhance analog channels for the card and separate the control module and signal monitor module. This invention can improve device reliability and convenience for wide application.

Description

Technical field: [0001] The present invention relates to a high and low temperature cycle equipment, specifically, it is a kind of equipment suitable for the high temperature limit T1 not exceeding 100°C and the low temperature limit T2 below -100°C in the temperature cycle process, with good stability and operability. Sexual equipment. Background technique: [0002] "High and low temperature cycle equipment with wide temperature range" (Chinese patent application number: 200410067891.9) shows that during the temperature cycle test process of the spaceborne low temperature detector, it can better meet the task requirements and achieve good benefits. However, since the main function of the device is based on PC and LabVIEW, it is not stable enough in the running process, and often encounters the situation of program running termination or error, which requires continuous maintenance by special maintenance personnel who are very familiar with the internal structure of the devi...

Claims

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Application Information

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IPC IPC(8): G01M19/00G05B19/042F25D3/10G01M99/00
Inventor 吴礼刚任仁龚海梅朱三根李向阳方家熊
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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