Low interference temperature control system based on voltage biasing and amplification
A technology of temperature control system and voltage bias, applied in the field of control system, can solve the problem of temperature control in a constant range, achieve signal stability and improve accuracy
Inactive Publication Date: 2018-02-09
CHENGDU JIESHENG TECH CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the defect that the heated seats on the market cannot control the temperature well within a constant range, and provide a low-interference temperature control system based on voltage bias amplification
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[0015] Such as figure 1 As shown, the present invention is mainly composed of control chip U, triode VT1, triode VT2, bidirectional thyristor VS, heating wire H, thermistor RT, potentiometer RP1, potentiometer RP2, resistance R1, resistance R2, resistance R3, resistance R4, Resistor R5, resistor R6, capacitor C1, capacitor C2, capacitor C3, diode D1, voltage regulator diode D2, frequency processing circuit and diode D3.
[0016] When connecting, the P pole of the Zener diode D2 is connected to the +12V voltage, and the N pole is connected to the collector of the triode VT1 after passing through the thermistor RT. The positive pole of the capacitor C1 is connected to the collector of the triode VT1, and the negative pole is grounded. The resistor R1 is connected in series between the base and the collector of the transistor VT1. The P pole of the diode D1 is connected to the base of the triode VT1, and the N pole is grounded after passing through the resistor R2. One end of ...
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The invention discloses a low interference temperature control system based on voltage biasing and amplification. The system is characterized in that the system is composed of a control chip U, a triode VT1, a triode VT2, a bidirectional thyristor VS, a heating wire H, a P-pole + 12V voltage, a Zener diode D2 which has an N-pole that is connected to a collector of the triode VT1 through a thermistor RT. According to the invention, the system can automatically control temperature such that when the temperature rises to a set upper limit, heating terminates automatically, and when the temperature lowers to a lower limit, heating automatically starts, so that the temperature of a heating set is kept at a comfortable and constant range. According to the invention, the system can amplify the magnitude of the voltage that is output by the thermistor, and allows the control chip to compare the voltage and a set voltage value in a more accurate manner, so that the heating wire can be controlled more accurately and the temperature of the heating seat is kept at a comfortable and constant range.
Description
technical field [0001] The invention relates to a control system, in particular to a low-interference temperature control system based on voltage bias amplification. Background technique [0002] With the development of science and technology, people's requirements for the comfort of modern life are getting higher and higher. Heated seats can make people enjoy the warmth brought by technology to people's lives in the cold winter, and it has become an essential for people in winter. living furniture. However, the heated seats currently on the market cannot well control the temperature in a constant range, which affects their comfort. Contents of the invention [0003] The purpose of the present invention is to overcome the defect that the current heated seats on the market cannot control the temperature well within a constant range, and provide a low-disturbance temperature control system based on voltage bias amplification. [0004] The object of the present invention is...
Claims
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IPC IPC(8): G05D23/24
CPCG05D23/24
Inventor 王丹
Owner CHENGDU JIESHENG TECH CO LTD