CN203773386U

CN203773386U - Temperature controller

Info

Publication number: CN203773386U
Application number: CN201420150736.2U
Authority: CN
Inventors: 庄海卿
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-31
Filing date: 2014-03-31
Publication date: 2014-08-13
Anticipated expiration: 2024-03-31

Abstract

The utility model relates to a temperature controller which comprises a temperature detection circuit, a trigger circuit and a wireless sending module circuit. The output signal of the temperature detection circuit is transmitted to the trigger circuit; and the output signal of the trigger circuit is then sent to the wireless sending module circuit. According to the temperature controller, when the temperature surpasses the limit, and judgment is carried out by the trigger circuit, data signals are sent out through the wireless sending module circuit; and the temperature controller has the advantages of high temperature detection precision and stable performance and the like.

Description

A kind of temperature controller

Technical field

The utility model relates to electronic circuit field, particularly be a kind of temperature controller.

Background technology

Along with the development of electronic technology, high precision, temperature detection has become a new study hotspot easily, be with a wide range of applications and practical significance, and traditional temperature controller accuracy of detection is low, unstable properties.

Utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, provides that a kind of accuracy of detection is high, the temperature controller of stable performance.

The utility model solves the technical scheme that its technical matters adopts: a kind of temperature controller, include temperature sensing circuit, trigger circuit and radio emitting modular circuit, the output signal of described temperature sensing circuit is transferred to trigger circuit, and the output signal of described trigger circuit is sent to radio emitting modular circuit again.

Described temperature sensing circuit adopts thermal resistor RT collecting temperature signal.

Described trigger circuit by time basis set become module I C and peripheral variohm RP1-RP4, resistor R1, R2 and the capacitor C1-C3 connecting thereof to form, when described, basis set becomes the output terminal of module I C to be also connected with transistor Q1.

The antenna TX that described radio emitting modular circuit connects by FDD-5 wireless transmitter module IC1 output terminal sends data-signal.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: in the time that occurrence temperature transfinites, the utility model, after trigger circuit judgements, outwards sends data-signal by radio emitting modular circuit, has that temperature detecting precision is high, steady performance.

Brief description of the drawings

Fig. 1 is frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

Further illustrate the utility model below in conjunction with the drawings and specific embodiments.

As shown in Figure 1 and Figure 2, a kind of temperature controller of the present utility model, include temperature sensing circuit, trigger circuit and radio emitting modular circuit, the output signal of described temperature sensing circuit is transferred to trigger circuit, and the output signal of described trigger circuit is sent to radio emitting modular circuit again.

Described temperature sensing circuit adopts thermal resistor RT collecting temperature signal, described trigger circuit by time basis set become module I C and peripheral variohm RP1-RP4, resistor R1, R2 and the capacitor C1-C3 connecting thereof to form, time basis set become the 6th pin of module I C as reference voltage terminal, its the 2nd pin is as temperature detection control end, and its 3 pin is control output end.Variohm RP1 is used for the lower limit of design temperature, and variohm RP2 is used for the higher limit of design temperature, and the resistance of thermal resistor RT declines along with the rising of temperature, and when described, basis set becomes the output terminal of module I C to be also connected with transistor Q1,

In the time monitoring the temperature rise in place, the resistance of thermal resistor RT diminishes, and while making, basis set becomes the 2nd pin of module I C, the 6th pin voltage to raise.When temperature reaches the higher limit of setting, time basis set become the 6th pin voltage of module I C will be higher than 2Vcc/3 time, its the 3rd pin output low level, transistor Q1 is in cut-off state, its collector is output high level, the 2nd pin that this signal is input to FDD-5 wireless transmitter module IC1 is also high level, and FDD-5 wireless transmitter module IC1 does not send data-signal.The temperature in monitoring place starts again to decline gradually, same basis set constantly becomes the 2nd pin of module I C, the 6th pin voltage also starts to decline, when temperature is down to the lower limit of design temperature, time basis set the 2nd pin voltage during lower than Vcc/3 that becomes module I C, time basis set become the 3rd pin of module I C to export again high level, transistor Q1 is in conducting state, its collector is output low level, this signal is input to the 2nd pin of FDD-5 wireless transmitter module IC1, and deliver to the 3rd pin of FDD-5 wireless transmitter module IC1, be modulation signal input end CP, high-frequency signal to transmitting is modulated, the antenna TX that FDD-5 wireless transmitter module IC1 output terminal connects launches modulated frequency electromagnetic waves to outdoor main unit, there is temperature detecting precision high, steady performance.

Above-described is only a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. a temperature controller, it is characterized in that: include temperature sensing circuit, trigger circuit and radio emitting modular circuit, the output signal of described temperature sensing circuit is transferred to trigger circuit, and the output signal of described trigger circuit is sent to radio emitting modular circuit again.

2. a kind of temperature controller according to claim 1, is characterized in that: described temperature sensing circuit adopts thermal resistor RT collecting temperature signal.

3. a kind of temperature controller according to claim 1 and 2, it is characterized in that: described trigger circuit by time basis set become module I C and peripheral variohm RP1-RP4, resistor R1, R2 and the capacitor C1-C3 connecting thereof to form, when described, basis set becomes the output terminal of module I C to be also connected with transistor Q1.

4. a kind of temperature controller according to claim 1 and 2, is characterized in that: the antenna TX that described radio emitting modular circuit connects by FDD-5 wireless transmitter module IC1 output terminal sends data-signal.