CN103699153B - Radiator valve - Google Patents
Radiator valve Download PDFInfo
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- CN103699153B CN103699153B CN201410002555.XA CN201410002555A CN103699153B CN 103699153 B CN103699153 B CN 103699153B CN 201410002555 A CN201410002555 A CN 201410002555A CN 103699153 B CN103699153 B CN 103699153B
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- sheffer stroke
- chip microcomputer
- stroke gate
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Abstract
A kind of radiator valve, it is by heating-cooling automatic identification circuit, intensification control circuit, cooling control circuit, temperature anomaly warning circuit, power supply form, and heating-cooling automatic identification circuit is made up of resistance R1, R2, R3, electric-contact mercury temp meter WDJ, operational amplifier U1A, intensification control circuit is made up of single-chip microcomputer, Sheffer stroke gate U3B, electric hot plate warm-up circuit, and cooling control circuit is made up of single-chip microcomputer, Sheffer stroke gate U3C, not gate U2A, U2B, U2C, semiconductor cooler cooling circuit.Radiator valve achieves and heats up and cooling overall-in-one control schema function, and its automaticity is high, and temperature control error is little, good reliability.
Description
Technical field
The present invention relates to a kind of can heating-cooling control radiator valve.
Background technology
The temperature controller sold in the market only has intensification or single controlling functions of lowering the temperature, and temperature-controlled precision is low, can not meet the requirement of constant-temperature temperature-control.
Summary of the invention
Can only to heat up or lower the temperature the drawback of single temperature control to overcome current temperature controller, the invention provides a kind of intensification with cooling controlling functions in the radiator valve of one.
The technical solution adopted for the present invention to solve the technical problems is: a kind of radiator valve, it is by rising, cooling automatic identification circuit, intensification control circuit, cooling control circuit, temperature anomaly warning circuit, power supply forms, it is characterized in that: rise, cooling automatic identification circuit is by resistance R1, R2, R3, electric-contact mercury temp meter WDJ, operational amplifier U1A forms, intensification control circuit is by single-chip microcomputer, Sheffer stroke gate U3B, electric hot plate warm-up circuit forms, cooling control circuit is by single-chip microcomputer, Sheffer stroke gate U3C, not gate U2A, U2B, U2C, semiconductor cooler cooling circuit composition.
An outer lead of described electric-contact mercury temp meter WDJ is connected with in-phase input end 3 pin of operational amplifier U1A, another outer lead of electric-contact mercury temp meter WDJ is connected with 4 pin of operational amplifier U1A, and 4 pin of operational amplifier U1A are connected with power cathode.
One end of described resistance R3 is connected with in-phase input end 3 pin of operational amplifier U1A, the other end of resistance R3 is connected with positive source, one end of resistance R1 is connected with inverting input 2 pin of operational amplifier U1A, the other end of resistance R3 is connected with positive source, one end of resistance R2 is connected with inverting input 2 pin of operational amplifier U1A, and the other end of resistance R2 is connected with power cathode.
The lower the temperature control end of circuit of output terminal 8 pin and the semiconductor cooler of described Sheffer stroke gate U3C is connected, output terminal 4 pin of the input end 9 pin Sheffer stroke gate U2B of Sheffer stroke gate U3C is connected, output terminal 6 pin of the input end 10 pin Sheffer stroke gate U2C of Sheffer stroke gate U3C is connected, and output terminal 2 pin of the input end 11 pin Sheffer stroke gate U2A of Sheffer stroke gate U3C is connected.
Output terminal 6 pin of described Sheffer stroke gate U3B is connected with the control end of electric hot plate warm-up circuit, input end 3 pin of Sheffer stroke gate U3B is connected with output terminal 1 pin of operational amplifier U1A, input end 4 pin of Sheffer stroke gate U3B is connected with output terminal 16 pin of single-chip microcomputer, and input end 5 pin of Sheffer stroke gate U3B is connected with output terminal 14 pin of single-chip microcomputer.
Input end 1 pin of described not gate U2A is connected with output terminal 14 pin of single-chip microcomputer, and input end 5 pin of not gate U2C is connected with output terminal 16 pin of single-chip microcomputer, input end 3 pin of not gate U2B is connected with output terminal 1 pin of operational amplifier U1A.
Output terminal 15 pin of described single-chip microcomputer is connected with the control end of temperature anomaly warning circuit.
The invention has the beneficial effects as follows that radiator valve achieves to heat up and cooling overall-in-one control schema function.This radiator valve automaticity is high, and temperature control error is little, good reliability.
Accompanying drawing explanation
Fig. 1 is the structural drawing of radiator valve.
Embodiment
Radiator valve is core component with single-chip microcomputer, utilizes electric-contact mercury temp meter to carry out temperature setting, by realizing the control to temperature to the regulation and control in electric-contact mercury temp meter on-off cycle.Single-chip microcomputer, to after the switching state-detection of electric-contact mercury temp meter, automatically identifies and heats up or cooling.When heating up, adopt electric hot plate heating, single-chip microcomputer control methods; When lowering the temperature, adopt semiconductor cooler cooling, single-chip microcomputer control methods.
After heating-cooling automatic identification circuit electric contact mercury thermometer arranges certain temperature value, two kinds of situations may be there are: the temperature of (1) controlled device does not reach the temperature value of setting.Now electric-contact mercury temp counts off-state (WDJ not conducting), and 3 pin of operational amplifier U1A are high level, and its 2 pin is the fixed voltage obtained after R1 and R2 dividing potential drop, and now 3 pin current potentials are higher than 2 pin current potentials, and 1 pin exports high level.This high level is input to 6 pin of single-chip microcomputer; (2) the temperature inside the box has met or exceeded the temperature value of setting.Now electric-contact mercury temp counts conducting state, according to the above analysis method, and 6 pin of single-chip microcomputer are low level.After the initialization of single-chip microcomputer electrification reset, first read in data from 6 pin, as the above analysis, if be " 1 " from the data of 6 pin inputs, then illustrate that controlled device needs to heat up, otherwise need cooling, single-chip microcomputer automatically identifies accordingly and heats up or cooling.
When single-chip microcomputer automatically identify controlled device need heat up time, single-chip microcomputer is by 14 pin set (output high level), this high level is input to 5 pin of Sheffer stroke gate U3B, the control Sheffer stroke gate U3B that heats up is opened, and the high level that single-chip microcomputer 14 pin exports makes 11 pin of U3C be low level through phase inverter U2A, cooling controls Sheffer stroke gate U3C and is closed, and cooling circuit can not work.When single-chip microcomputer automatically identify controlled device need to heat up time, single-chip microcomputer 16 pin output duty cycle is the square wave of 1:1, and namely 5 pin of U3B are high level, and 4 pin are square wave, and its 6 pin exports and the anti-phase square wave of 4 pin, and electric hot plate warm-up circuit is started working.
When the temperature of controlled device reaches the temperature value of setting, WDJ conducting, now the 3 pin current potentials of U1A are lower than 2 pin current potentials, 1 pin output low level, and Sheffer stroke gate U3B is closed, and its 6 pin exports high level, and electric hot plate warm-up circuit quits work.Meanwhile, the interruption control inputs pin INT0 that the low level that 1 pin of U1A exports delivers to single-chip microcomputer simultaneously hold, and its negative edge causes singlechip interruption, and external interrupt service routine makes the timer internal of single-chip microcomputer start to count.
After electric hot plate stops heating, the temperature of controlled device starts to decline, and through after a period of time, WDJ disconnects, and according to above-mentioned analysis, electric hot plate warm-up circuit is started working.When being heated to set temperature value, WDJ conducting, makes the 1 pin output low level again of U1A.According to analysis above, this low level makes electric hot plate warm-up circuit quit work on the one hand; Its negative edge causes singlechip interruption again on the other hand, and external interrupt service routine makes single-chip microcomputer timer internal T0 stop counting.And analysis judgement is carried out to the switching cycle of WDJ, corresponding zone bit is put according to different situations, then interrupt service routine makes single-chip microcomputer timer internal T0 start again to count, and is stored in the switching cycle of this WDJ, is used for compared with the next switching cycle.Single-chip microcomputer timer internal T0 works in mode 2, when low level timing unit overflows, will send timer T0 and interrupt, timer T0 interrupt service routine completes by the carry of low level timing unit to high-order timing unit, in a word, timer T0 constitutes the timer of electronics tabular form.Master routine carries out computing according to zone bit, increases by a certain percentage or reduces the dutycycle that 16 pin export square wave, exporting temperature control pulse by this dutycycle, thus control the size of electric hot plate power within the basic cycle (a switching cycle of WDJ).
When single-chip microcomputer automatically identify controlled device need cooling time, the principle of work of its control circuit is similar to the principle of work of intensification control circuit.Single-chip microcomputer is by 14 pin presets (output low level), and this low level is input to 5 pin of Sheffer stroke gate U3B, and the control Sheffer stroke gate U3B that heats up is closed, and its 6 pin exports high level, and warm-up circuit can not work.The low level that 14 pin export simultaneously is input to 11 pin of U3C after phase inverter U2A is anti-phase, and 11 pin of U3C are high level, and cooling controls Sheffer stroke gate U3C and is opened.In addition, when single-chip microcomputer automatically identify controlled device need cooling time, single-chip microcomputer 16 pin output duty cycle is the square wave of 1:1, namely 11 pin of U3C are high level, and 10 pin are square wave, and its 8 pin exports the square wave anti-phase with 10 pin, semiconductor cooler obtains electric work, and controlled device starts cooling.When the temperature of controlled device drops to the temperature value of setting, WDJ disconnects, U1A's
pin will export high level.From the above-mentioned analysis to cooling control circuit, after WDJ disconnects, cooling circuit quits work.Now controlled device is still in cooling duty, and 14 pin of single-chip microcomputer are low level, and Sheffer stroke gate U3B closes by this low level.Although therefore U1A
pin exports high level, but Sheffer stroke gate U3B is still closed, and electric hot plate warm-up circuit still can not work.After semiconductor cooler stops refrigeration, the temperature of controlled device starts to rise, and through after a period of time, WDJ conducting, according to above-mentioned analysis, semiconductor cooler starts again to lower the temperature to controlled device.Later cooling temperature control process and intensification temperature control similar process, its difference is: for warm-up circuit, and the square wave after the adjustment that single-chip microcomputer 16 pin exports is for controlling electric hot plate; For cooling circuit, the square wave after the adjustment that single-chip microcomputer 16 pin exports is for controlling semiconductor cooler.The heat that last controlled device absorbs from the external world and semiconductor cooler reach mobile equilibrium substantially from the systemic heat of case, thus make temperature-controlled precision reach higher level.
When temperature-adjusting circuit normally works, the switching cycle of electric-contact mercury temp meter is generally tens of second.If heating-cooling control circuit breaks down, must there is exception in this cycle.According to the higher limit (setting in timing program) of the size setting cycle of controlled device volume.When this cycle exceedes higher limit, 15 pin output low levels of single-chip microcomputer, control temperature abnormal circuit sends chimes of doom.
The software of radiator valve is made up of three parts such as master routine, external interrupt service routine, timer internal interrupt service routines.
Claims (1)
1. a radiator valve, it is made up of heating-cooling automatic identification circuit, intensification control circuit, cooling control circuit, temperature anomaly warning circuit, power supply, it is characterized in that: heating-cooling automatic identification circuit is made up of resistance R1, R2, R3, electric-contact mercury temp meter WDJ, operational amplifier U1A, intensification control circuit is made up of single-chip microcomputer, Sheffer stroke gate U3B, electric hot plate warm-up circuit, and cooling control circuit is made up of single-chip microcomputer, Sheffer stroke gate U3C, not gate U2A, not gate U2B, not gate U2C, semiconductor cooler cooling circuit; An outer lead of electric-contact mercury temp meter WDJ is connected with in-phase input end 3 pin of operational amplifier U1A, and another outer lead of electric-contact mercury temp meter WDJ is connected with 4 pin of operational amplifier U1A, and 4 pin of operational amplifier U1A are connected with power cathode; One end of resistance R3 is connected with in-phase input end 3 pin of operational amplifier U1A, the other end of resistance R3 is connected with positive source, one end of resistance R1 is connected with inverting input 2 pin of operational amplifier U1A, one end of resistance R2 is connected with inverting input 2 pin of operational amplifier U1A, and the other end of resistance R2 is connected with power cathode; The lower the temperature control end of circuit of output terminal 8 pin and the semiconductor cooler of Sheffer stroke gate U3C is connected, output terminal 4 pin of the input end 9 pin Sheffer stroke gate U2B of Sheffer stroke gate U3C is connected, output terminal 6 pin of the input end 10 pin Sheffer stroke gate U2C of Sheffer stroke gate U3C is connected, and output terminal 2 pin of the input end 11 pin Sheffer stroke gate U2A of Sheffer stroke gate U3C is connected; Output terminal 6 pin of Sheffer stroke gate U3B is connected with the control end of electric hot plate warm-up circuit, input end 3 pin of Sheffer stroke gate U3B is connected with output terminal 1 pin of operational amplifier U1A, input end 4 pin of Sheffer stroke gate U3B is connected with output terminal 16 pin of single-chip microcomputer, and input end 5 pin of Sheffer stroke gate U3B is connected with output terminal 14 pin of single-chip microcomputer; Input end 1 pin of not gate U2A is connected with output terminal 14 pin of single-chip microcomputer, and input end 5 pin of not gate U2C is connected with output terminal 16 pin of single-chip microcomputer, input end 3 pin of not gate U2B is connected with output terminal 1 pin of operational amplifier U1A; Output terminal 15 pin of single-chip microcomputer is connected with the control end of temperature anomaly warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002555.XA CN103699153B (en) | 2014-01-04 | 2014-01-04 | Radiator valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002555.XA CN103699153B (en) | 2014-01-04 | 2014-01-04 | Radiator valve |
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| Publication Number | Publication Date |
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| CN103699153A CN103699153A (en) | 2014-04-02 |
| CN103699153B true CN103699153B (en) | 2016-01-20 |
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| CN201410002555.XA Active CN103699153B (en) | 2014-01-04 | 2014-01-04 | Radiator valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2682945Y (en) * | 2004-03-11 | 2005-03-09 | 王瀛震 | Constant temperature electric heating blanket |
| US20080264083A1 (en) * | 2007-04-24 | 2008-10-30 | Wang Huei-Fa | Gasoline-saving Vehicle A/C Controller |
| CN201689350U (en) * | 2010-05-12 | 2010-12-29 | 衡阳风顺车桥有限公司 | Constant temperature control device |
| CN201910010U (en) * | 2010-12-14 | 2011-07-27 | 河南省电力公司平顶山供电公司 | Constant temperature control device |
| CN202171755U (en) * | 2011-06-15 | 2012-03-21 | 何天生 | Intelligent storehouse temperature monitoring module |
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Inventor after: Deng Yougen Inventor before: Qin Hui |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170526 Address after: 528425 Guangdong city of Zhongshan Province Dongfeng Town, Jinyi Road No. 78 on the third floor Patentee after: Zhongshan City Public Security thermostat Co. Ltd. Address before: 502, room 2, unit 1, Security Bureau, 12 Dongxing street, Qiaodong District, Zhangjiakou, Hebei, 075000 Patentee before: Qin Hui |