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A temperature control device and temperature control technology, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problem of low accuracy of temperature control and detection, increased cost and circuit complexity, and different control methods Intuitive and other issues, to achieve the effect of low production cost, low energy consumption, and precise control
Inactive Publication Date: 2016-02-03
WUHU HENGFENG TECH
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Its existing problems: In order to realize the alarm, all the equipment used in the alarm system have added alarm equipment such as intermediate relays and alarm indicators, which increases the cost and complexity of the circuit
Its existing problems: the adjustment content is single, it can only be the ventilation volume in the poultry house, the accuracy of temperature control and detection is not high, and the control method is not intuitive
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[0019] Such as figure 1 The shown automatic temperature control device includes a temperature detection circuit and a temperature control circuit.
[0020] The temperature detection circuit is composed of temperature sensor RT, three-terminal precision voltage regulator ICl, IC2, potentiometer RP1, RP2, RP5, ammeter PA, resistors R3 ~ R6 and temperature measurement setting selection switch S, the temperature measurement One end of the setting selection switch S is respectively connected with the temperature sensor RT or the potentiometer RP5, the other end of the temperature measurement setting selection switch S is connected with the potentiometer RP2, and the temperature sensor RT is connected with the potentiometer RP5. The other end is also commonly connected with a three-terminal precision voltage regulator IC2 and a resistor R3, and the three-terminal precision voltage regulator IC2 is respectively connected in parallel with a potentiometer RP2 and a resistor R4, and the...
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Abstract
The invention discloses an automatic temperature control device, which comprises a temperature detection circuit and a temperature control circuit, wherein the temperature detection circuit is composed of a temperature sensor RT, three-terminal precise voltage regulators IC1 and IC2, potentiometers RP1, RP2, and RP5, an ammeter PA, resistors R3 to R6 and a temperature measurement setting selection switch S; and the temperature control circuit is composed of three-terminal precise voltage regulators IC3 and IC4, a transistor V, a thyristor VT, zener diodes VS1 and VS2, a relay K, a diode VD, light-emitting diodes VL1 and VL2, resistors R1, R2, R7 to R10, a temperature upper limit control potentiometer RP3 and a temperature lower limit control potentiometer RP4. The temperature control device of the invention is wide in temperature control range, accurate in control, low in energy consumption and low in manufacturing cost, an electric heater is automatically closed when the monitored temperature reaches the upper set temperature limit value, and when the monitored temperature reaches the lower set temperature limit value, the working power supply of the electric heater is automatically connected.
Description
technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to an automatic temperature control device. Background technique [0002] At present, most of the poultry house environment controllers used in the breeding industry are 8-bit single-chip microcomputers. These products have simple functions, limited information collection, inconvenient expansion, poor networking functions, and no feedback on the actual operating status of the equipment. Once the equipment fails (such as motor overcurrent failure), the breeder cannot immediately know and take timely measures. There are risks to the poultry. For this reason, the breeder needs to inspect from time to time, which not only disturbs the flock, but also increases the labor intensity of the breeder. Although traditional environmental control can realize ventilation and temperature adjustment according to the current temperature and then issue control commands, it cann...
Claims
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Application Information
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