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Semiconductor refrigerator system capable of accurately controlling temperature

A technology of precise temperature control and system, applied in control/regulation systems, temperature control, non-electric variable control, etc. Stable effect

Inactive Publication Date: 2021-10-08
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Semiconductor refrigerators are made by using the Peltier effect of semiconductor materials. When a direct current passes through two semiconductor materials to form a galvanic couple, one end absorbs heat and the other end releases heat. The rate is determined by the direction and magnitude of the current passing through it. The accuracy and stability of the existing semiconductor refrigerators are not strong, and the working mode is single

Method used

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  • Semiconductor refrigerator system capable of accurately controlling temperature
  • Semiconductor refrigerator system capable of accurately controlling temperature
  • Semiconductor refrigerator system capable of accurately controlling temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, with figure 1 It is a schematic diagram of the principle structure of the power supply circuit of the present invention. Because the current is relatively large during cooling or heating, a high-efficiency, PWM step-down DC-DC converter XL4003 is used. The charging power supply outputs +5V voltage through the chip XL4003, and after passing through the voltage regulator NCP1117 -3.0V output +3.3V voltage.

Embodiment 2

[0026] Embodiment 2, with figure 2 It is a schematic diagram of the principle structure of the main control circuit of the present invention. The chip STM32F103 VC is used to provide three 12-bit ADCs, four general-purpose 16-bit timers and two pulse width modulation timers. The chip is a high-density performance line device, and the operating temperature -40°C - +105°C, and can be applied with low power consumption.

Embodiment 3

[0027] Embodiment 3, with image 3 It is a schematic diagram of the principle structure of the communication interface circuit of the present invention. Chip ST3232ECTR and chip SP3485 are used. Chip ST3232ECTR has a low-dropout transmitter output stage with low power consumption, high data rate capability and enhanced electrostatic discharge protection. Chip SP3485 has a low power consumption of half Duplex transceivers allow low power consumption without sacrificing performance, chip ST3232ECTR and chip SP3485 low consumption, but enhance the communication capability of the system.

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PUM

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Abstract

The invention discloses a semiconductor refrigerator system capable of accurately controlling the temperature, wherein the system comprises a power supply circuit, a main control circuit, a communication interface circuit, a PID driving circuit, an OLED display circuit, a TE driving circuit and a temperature acquisition circuit; the power supply circuit provides a steady voltage to the whole system; and the main control circuit performs bidirectional control with the communication interface circuit, performs bidirectional control with the OLED display circuit, controls the PID driving circuit, and the PID driving circuit performs bidirectional control with the TE driving circuit, and performs bidirectional control with the temperature acquisition circuit. The system is simple and reasonable in structure, can accurately control the temperature, and has good market application value.

Description

technical field [0001] The invention relates to the field of semiconductor refrigerators, in particular to a precise temperature-controlled semiconductor refrigerator system. Background technique [0002] Semiconductor refrigerators are made by using the Peltier effect of semiconductor materials. When a direct current passes through two semiconductor materials to form a galvanic couple, one end absorbs heat and the other end releases heat. The speed is determined by the direction and magnitude of the current passing through it. The accuracy and stability of the existing semiconductor refrigerators are not strong, and the working mode is single. Contents of the invention [0003] Aiming at the deficiencies of the existing semiconductor refrigerators, the present invention provides a semiconductor refrigerator system capable of heating and cooling with precise temperature control, which has the effects of high precision and strong stability. [0004] The technical solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/24
CPCG05D23/24
Inventor 孙刚
Owner XUCHANG UNIV