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Thermostatic control device and method with detection of heat transfer rate

A technology of heat transfer rate and constant temperature control, applied in temperature control, non-electric variable control, control/regulation system, etc., can solve problems such as temperature fluctuation, temperature overshoot, long adjustment time, etc., achieve accurate and stable temperature, prevent temperature Effects of overshoot and small thermal inertia

Inactive Publication Date: 2010-03-03
NANJING UNIV
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Problems solved by technology

[0003] The disadvantage of the traditional constant temperature system is that the time constant of the whole system is relatively large, and the disadvantage of this is that the adjustment time is long
The hysteresis of temperature information will cause temperature fluctuations or temperature overshoots or even temperature oscillations, which affect the performance of the constant temperature system

Method used

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  • Thermostatic control device and method with detection of heat transfer rate
  • Thermostatic control device and method with detection of heat transfer rate
  • Thermostatic control device and method with detection of heat transfer rate

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Embodiment Construction

[0015] The present invention consists of a control and signal processing unit 1, a heat transfer rate detection unit 2, a sensor 3, a heating & cooling unit 4, a thermostatic chamber 5, a first driving circuit 6, a first amplifying circuit 7, a second amplifying circuit 8, and a second The driving circuit 9 is composed.

[0016] The control and signal processing unit 1 controls the second drive circuit 9 to drive the heating & cooling unit 4 through its own second drive port 1-4, and outputs heat or cooling capacity to the thermostatic chamber 5; the sensor 3 in the thermostatic chamber 5 senses the temperature signal, The temperature signal in the thermostatic chamber 5 is fed back to the control and signal processing unit 1 through the second amplifying circuit 8 . At the same time, the control and signal processing unit 1 controls the first drive circuit 6 to drive the heat transfer rate detection unit 2 to reach a temperature consistent with that in the thermostatic chambe...

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Abstract

The invention relates to thermostatic control device and method with detection of heat transfer rate, which are the brand new thermostatic control device and method with high stability and high thermostatic precision. The device comprises a control and signal processing unit (1), a heat transfer rate detecting unit (2), a sensor (3), a heating and cooling unit (4), a thermostatic chamber (5), a first drive circuit (6), a first amplifying circuit (7), a second amplifying circuit (8) and a second drive circuit (9). On the basis of a conventional closed loop temperature control system, the thermostatic control system increases a link for detecting the heat exchange rate between thermostatic space and external environment so that the thermostatic system can respond quickly to the change of external environment, reduce the fluctuation of temperature and improve the thermostatic speed and precision.

Description

technical field [0001] The invention is a high-precision constant temperature control system, which increases the detection link of the heat transfer rate between the external environment and the constant temperature system, so that the constant temperature control system can respond to changes in the external environment faster and achieve higher temperature stability. The invention belongs to the technical field of automatic control. Background technique [0002] The constant temperature control system with heat transfer rate detection is characterized by high stability and high precision, and changes in the external environment will not cause fluctuations in the constant temperature state of the system. [0003] The disadvantage of the traditional constant temperature system is that the time constant of the whole system is relatively large, and the disadvantage of this is that the adjustment time is long. This is because the thermal resistance of the constant temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
Inventor 王顺张旭苹张益昕张凯
Owner NANJING UNIV
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