CN105302190A - Automatic temperature control device - Google Patents
Automatic temperature control device Download PDFInfo
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- CN105302190A CN105302190A CN201510699146.4A CN201510699146A CN105302190A CN 105302190 A CN105302190 A CN 105302190A CN 201510699146 A CN201510699146 A CN 201510699146A CN 105302190 A CN105302190 A CN 105302190A
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- temperature
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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
The invention belongs to technical field of automatic control, be specifically related to a kind of robotization temperature control equipment.
Background technology
Current, the poultry house environment controller that cultivation industry adopts, mostly is the single-chip microcomputer of 8.These product functions are simple, Information Monitoring is limited, and be not easy to expansion, network savvy is poor, equipment actual motion state is without feedback, equipment is once break down (as over current of motor fault), and poultry raiser can not learn at once and take measures in time, there is risk to the bird of cultivation, for this reason, poultry raiser need patrol frequently, has both alarmed fowl group, increases again the labour intensity of poultry raiser.Though traditional ring control can realize ventilation according to Current Temperatures, temperature regulates and then sends steering order, can not judge the validity of order.Numerous parameters needed for the cultivation such as ammonia concentration, gas concentration lwevel, oxygen concentration, negative pressure, temperature, due to the restriction of integrated level, integrated technology, can not access comprehensively monitor by traditional ring control.Current culture control system master designs for single pouity dwelling place, and to many pouity dwelling places, multiple plant networking Centralized Monitoring difficulty comparatively greatly, namely needed for enable on-line customer, expense is also higher.Current culture control system is basic has only carried out automatic control to ventilation, and be substantially in manual mode to the control of negative pressure fenestella, the wet equipment such as curtain, heating installation, poultry raiser's labour intensity is larger.The control system of current pouity dwelling place cultivation does not add the benefit analytic functions such as feed is accumulative, case fatality rate, is unfavorable for the accounting of culture benefit.And traditional ring control device is Full-electronic integrated circuit, once fault, must a complete set ofly change, expensive, spare part costly.
Publication number be 201796256 Intelligent poultry house environment controller patent give a kind of poultry house environment controller with temperature, ammonia, carbon dioxide monitoring function, its control blower fan, well heater etc. intellectual monitoring is carried out to pouity dwelling place environment.Its Problems existing is: be provided with RS485 interface in poultry house environment controller and connect ammonia gas sensor and carbon dioxide sensor, this just requires that ammonia gas sensor and carbon dioxide sensor must be support RS485 interface communication, but adopt 485 communications to be easily disturbed, also need to be equipped with build-out resistor for this reason; System control processor is by RS485 interface connecting fan sub-controller, timing sub-controller, heating sub-controller etc., this just shows that this ring control device can not directly control the equipment such as blower fan, well heater, be limited to RS485 communication and separately must add and support that the sub-controller of RS485 could realize the control of these equipment, this just causes this control system to control fractionation of complex, feature that cost is high.
Publication number be 102231065 poultry house breeding environment alarm system patent give a kind of warning system, it, by detecting the temperature variation of pouity dwelling place, ensures the security of pouity dwelling place.Its Problems existing: each equipment that warning system adopts all has added the panalarm such as auxiliary reclay, alarm lamp to realize reporting to the police, and adds the complexity of cost and circuit.
Publication number be 201637034 poultry house environmental control system patent give a kind of environmental control system, it is mainly through adjusting blower fan to the monitoring of temperature thus pouity dwelling place being realized to the control of environment.Its Problems existing: the content of adjustment is single can only be the ventilation in pouity dwelling place, and on temperature controls and detects, degree of accuracy is not high, and control mode is not directly perceived yet.
Summary of the invention
Goal of the invention: the object of the invention is to solve deficiency of the prior art, there is provided a kind of temperature control scope wide, control accurately, and low energy consumption, cost of manufacture are low, it is when monitor temperature reaches the higher limit of design temperature, automatically can close electrical heating when monitor temperature is down to the lower limit of design temperature, automatically can connect again the robotization temperature control equipment of the working power of electric heater.
Technical scheme: a kind of robotization temperature control equipment of the present invention, comprise temperature sensing circuit and temperature-control circuit, described temperature sensing circuit is by temperature sensor RT, the accurate voltage stabilizer ICl of three ends, IC2, potentiometer RP1, RP2, RP5, reometer PA, resistor R3 ~ R6 and temperature survey setting selector switch S composition, one end of described temperature survey setting selector switch S is connected with described temperature sensor RT or potentiometer RP5 respectively, the other end of described temperature survey setting selector switch S is connected with described potentiometer RP2, the other end of described temperature sensor RT and potentiometer RP5 is also connected with the accurate voltage stabilizer IC2 and resistor R3 of three ends jointly, the accurate voltage stabilizer IC2 of described three ends is connected in parallel to potentiometer RP2 and resistor R4 respectively, described potentiometer RP2 two ends are also connected to reometer PA and temperature survey setting selector switch S, described reometer PA is also connected in parallel to resistor R5 and potentiometer RP1, described potentiometer RP1HIA is connected in parallel to the accurate voltage stabilizer ICl and resistor R6 of three ends, described temperature-control circuit is by the accurate voltage stabilizer IC3 of three ends, IC4, transistor V, thyristor VT, voltage stabilizing diode VS1, VS2, relay K, diode VD, light emitting diode VL1, VL2, resistor R1, R2, R7 ~ R10 and upper temperature limit controlling potential device RP3, lowest temperature controlling potential device RP4 forms, described resistor R10 and described temperature survey set selector switch S and are connected, described resistor R10 is also connected in parallel to resistor R1 and lowest temperature controlling potential device RP4, described resistor R1 is also connected with upper temperature limit controlling potential device RP3, described lowest temperature controlling potential device RP4 is also connected with resistor R2, the control end of described lowest temperature controlling potential device RP4 is also connected with the accurate voltage stabilizer IC3 of three ends, the accurate voltage stabilizer IC3 of described three ends is also connected in series with light emitting diode VL1 and resistor R7, described light emitting diode VL1 is also connected with voltage stabilizing diode VS2 and thyristor VT, the control end of described upper temperature limit controlling potential device RP3 is also connected with the accurate voltage stabilizer IC4 of three ends, the accurate voltage stabilizer IC4 of described three ends is connected in series with light emitting diode VL2 and resistor R8, described light emitting diode VL2 is also connected with voltage stabilizing diode VS1, described voltage stabilizing diode VS1 is also connected with the base stage of transistor V, the emitter of described transistor V is connected with described thyristor VT and resistor R9, described thyristor VT is also connected in parallel to diode VD and relay K.
Further, described resistor R1 ~ R6 all selects the precision metal film resistor of 2w: R7 and R8 all selects the precision metal film resistor of IW.
Further, described potentiometer RP1 ~ RP5 all selects the accurate multiturn potentiometer of 3006 types.
Further, described temperature sensor RT selects WZC type thermal resistor, and 0 DEG C time, its resistance should be 100 Ω.
Further, described voltage stabilizing diode VSl and VS2 all selects power to be the silicon voltage regulator diode of 1W.
Further, described transistor V selects C8050 or 3DG12 type silicon NPN transistor.
Further, described thyristor VT selects the thyristor of 1A, 50V.
Further, the accurate voltage stabilizer IC1 ~ IC4 of described three ends all selects the accurate integrated regulator of three ends of the models such as TL431 or μ A431.
Further, described relay K selects 12V Miniature direct current relay, and contact current capacity is 3A.
Further, described temperature survey setting selector switch S selects one pole toggle switch.
Beneficial effect: its temperature control scope of temperature control equipment of the present invention is wide, control accurately, and low energy consumption, cost of manufacture are low, it is when monitor temperature reaches the higher limit of design temperature, automatically can close electrical heating when monitor temperature is down to the lower limit of design temperature, automatically can connect again the working power of electric heater.
Accompanying drawing explanation
Fig. 1 is control circuit schematic diagram of the present invention.
Embodiment
A kind of robotization temperature control equipment as shown in Figure 1, comprises temperature sensing circuit and temperature-control circuit.
Described temperature sensing circuit is by temperature sensor RT, the accurate voltage stabilizer ICl of three ends, IC2, potentiometer RP1, RP2, RP5, reometer PA, resistor R3 ~ R6 and temperature survey setting selector switch S composition, one end of described temperature survey setting selector switch S is connected with described temperature sensor RT or potentiometer RP5 respectively, the other end of described temperature survey setting selector switch S is connected with described potentiometer RP2, the other end of described temperature sensor RT and potentiometer RP5 is also connected with the accurate voltage stabilizer IC2 and resistor R3 of three ends jointly, the accurate voltage stabilizer IC2 of described three ends is connected in parallel to potentiometer RP2 and resistor R4 respectively, described potentiometer RP2 two ends are also connected to reometer PA and temperature survey setting selector switch S, described reometer PA is also connected in parallel to resistor R5 and potentiometer RP1, described potentiometer RP1HIA is connected in parallel to the accurate voltage stabilizer ICl and resistor R6 of three ends.
Described temperature-control circuit is by the accurate voltage stabilizer IC3 of three ends, IC4, transistor V, thyristor VT, voltage stabilizing diode VS1, VS2, relay K, diode VD, light emitting diode VL1, VL2, resistor R1, R2, R7 ~ R10 and upper temperature limit controlling potential device RP3, lowest temperature controlling potential device RP4 forms, described resistor R10 and described temperature survey set selector switch S and are connected, described resistor R10 is also connected in parallel to resistor R1 and lowest temperature controlling potential device RP4, described resistor R1 is also connected with upper temperature limit controlling potential device RP3, described lowest temperature controlling potential device RP4 is also connected with resistor R2, the control end of described lowest temperature controlling potential device RP4 is also connected with the accurate voltage stabilizer IC3 of three ends, the accurate voltage stabilizer IC3 of described three ends is also connected in series with light emitting diode VL1 and resistor R7, described light emitting diode VL1 is also connected with voltage stabilizing diode VS2 and thyristor VT, the control end of described upper temperature limit controlling potential device RP3 is also connected with the accurate voltage stabilizer IC4 of three ends, the accurate voltage stabilizer IC4 of described three ends is connected in series with light emitting diode VL2 and resistor R8, described light emitting diode VL2 is also connected with voltage stabilizing diode VS1, described voltage stabilizing diode VS1 is also connected with the base stage of transistor V, the emitter of described transistor V is connected with described thyristor VT and resistor R9, described thyristor VT is also connected in parallel to diode VD and relay K.
Each components and parts of above-mentioned control circuit are selected as follows:
Further, described resistor R1 ~ R6 all selects the precision metal film resistor of 2w: R7 and R8 all selects the precision metal film resistor of IW.
Further, described potentiometer RP1 ~ RP5 all selects the accurate multiturn potentiometer of 3006 types.
Further, described temperature sensor RT selects WZC type thermal resistor, and 0 DEG C time, its resistance should be 100 Ω.
Further, described voltage stabilizing diode VSl and VS2 all selects power to be the silicon voltage regulator diode of 1W.
Further, described transistor V selects C8050 or 3DG12 type silicon NPN transistor.
Further, described thyristor VT selects the thyristor of 1A, 50V.
Further, the accurate voltage stabilizer IC1 ~ IC4 of described three ends all selects the accurate integrated regulator of three ends of the models such as TL431 or μ A431.
Further, described relay K selects 12V Miniature direct current relay, and contact current capacity is 3A.
Further, described temperature survey setting selector switch S selects one pole toggle switch.
The control principle of this circuit is as follows:
Temperature sensor is used for detecting temperature, its temperature variation and the resistance proportional (being 100 Ω when 0 DEG C) of controlled location.Defeated people's voltage of IC3 and IC4 changes along with the change of dut temperature.
When the lower limit of dut temperature lower than design temperature, IC3 and IC4 all exports high level, and voltage stabilizing diode VS1, VS2, transistor v and the equal conducting of thyristor VT, relay Κ adhesive, the working power of electric heater is connected by its normally open contact.
When dut temperature reaches the lower-limit temperature value of setting, defeated people's voltage of IC3 reaches threshold voltage (reference voltage 2.5V), and its output terminal becomes low level from high level, and VL1 is lighted, and VS2 ends, but VT still maintains conducting state.
When dut temperature reaches the higher limit of design temperature, input end's voltage of IC4 reaches threshold voltage, its output terminal becomes low level from high level, VS1 and V is ended, VT also ends, VL1 and VL2 all lights, and K discharges, the working power of electric heater is cut off by its normally closed interlock, and controlled temperature starts to decline.
Time between the upper limit value and lower limit value that temperature is down to design temperature, the output end yoke of IC4 becomes high level, VSl and V be conducting again, but VT is still in cut-off state because of Triggerless, and K is failure to actuate.Until when temperature is down to the lower limit temperature of design temperature, IC3 exports high level, VS2 and VT conducting, k adhesive, makes electric heater energising work.So go round and begin again, controlled temperature is remained between the upper and lower limit temperature value of setting.
Its temperature control scope of temperature control equipment of the present invention is wide, control accurately, and low energy consumption, cost of manufacture are low, it is when monitor temperature reaches the higher limit of design temperature, automatically can close electrical heating when monitor temperature is down to the lower limit of design temperature, automatically can connect again the working power of electric heater.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a robotization temperature control equipment, it is characterized in that: comprise temperature sensing circuit and temperature-control circuit, described temperature sensing circuit is by temperature sensor RT, the accurate voltage stabilizer ICl of three ends, IC2, potentiometer RP1, RP2, RP5, reometer PA, resistor R3 ~ R6 and temperature survey setting selector switch S composition, one end of described temperature survey setting selector switch S is connected with described temperature sensor RT or potentiometer RP5 respectively, the other end of described temperature survey setting selector switch S is connected with described potentiometer RP2, the other end of described temperature sensor RT and potentiometer RP5 is also connected with the accurate voltage stabilizer IC2 and resistor R3 of three ends jointly, the accurate voltage stabilizer IC2 of described three ends is connected in parallel to potentiometer RP2 and resistor R4 respectively, described potentiometer RP2 two ends are also connected to reometer PA and temperature survey setting selector switch S, described reometer PA is also connected in parallel to resistor R5 and potentiometer RP1, described potentiometer RP1HIA is connected in parallel to the accurate voltage stabilizer ICl and resistor R6 of three ends, described temperature-control circuit is by the accurate voltage stabilizer IC3 of three ends, IC4, transistor V, thyristor VT, voltage stabilizing diode VS1, VS2, relay K, diode VD, light emitting diode VL1, VL2, resistor R1, R2, R7 ~ R10 and upper temperature limit controlling potential device RP3, lowest temperature controlling potential device RP4 forms, described resistor R10 and described temperature survey set selector switch S and are connected, described resistor R10 is also connected in parallel to resistor R1 and lowest temperature controlling potential device RP4, described resistor R1 is also connected with upper temperature limit controlling potential device RP3, described lowest temperature controlling potential device RP4 is also connected with resistor R2, the control end of described lowest temperature controlling potential device RP4 is also connected with the accurate voltage stabilizer IC3 of three ends, the accurate voltage stabilizer IC3 of described three ends is also connected in series with light emitting diode VL1 and resistor R7, described light emitting diode VL1 is also connected with voltage stabilizing diode VS2 and thyristor VT, the control end of described upper temperature limit controlling potential device RP3 is also connected with the accurate voltage stabilizer IC4 of three ends, the accurate voltage stabilizer IC4 of described three ends is connected in series with light emitting diode VL2 and resistor R8, described light emitting diode VL2 is also connected with voltage stabilizing diode VS1, described voltage stabilizing diode VS1 is also connected with the base stage of transistor V, the emitter of described transistor V is connected with described thyristor VT and resistor R9, described thyristor VT is also connected in parallel to diode VD and relay K.
2. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described resistor R1 ~ R6 all selects the precision metal film resistor of 2w: R7 and R8 all selects the precision metal film resistor of IW.
3. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described potentiometer RP1 ~ RP5 all selects the accurate multiturn potentiometer of 3006 types.
4. a kind of robotization temperature control equipment according to claim 1, it is characterized in that: described temperature sensor RT selects WZC type thermal resistor, 0 DEG C time, its resistance should be 100 Ω.
5. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described voltage stabilizing diode VSl and VS2 all selects power to be the silicon voltage regulator diode of 1W.
6. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described transistor V selects C8050 or 3DG12 type silicon NPN transistor.
7. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described thyristor VT selects the thyristor of 1A, 50V.
8. a kind of robotization temperature control equipment according to claim 1, is characterized in that: the accurate voltage stabilizer IC1 ~ IC4 of described three ends all selects the accurate integrated regulator of three ends of the models such as TL431 or μ A431.
9. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described relay K selects 12V Miniature direct current relay, and contact current capacity is 3A.
10. a kind of robotization temperature control equipment according to claim 1, is characterized in that: described temperature survey setting selector switch S selects one pole toggle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510699146.4A CN105302190A (en) | 2015-10-26 | 2015-10-26 | Automatic temperature control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510699146.4A CN105302190A (en) | 2015-10-26 | 2015-10-26 | Automatic temperature control device |
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| CN105302190A true CN105302190A (en) | 2016-02-03 |
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| CN201510699146.4A Pending CN105302190A (en) | 2015-10-26 | 2015-10-26 | Automatic temperature control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329508A (en) * | 2017-07-14 | 2017-11-07 | 过成康 | A kind of low energy consumption, high-precision automatic temperature control circuit |
| CN118625879A (en) * | 2024-08-14 | 2024-09-10 | 深圳市亚细亚电子有限公司 | Temperature regulating circuit of hair waving machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137864Y (en) * | 1992-08-25 | 1993-07-14 | 哈尔滨市兴华电器厂 | Automatic controlled temp rgulator |
| CN2160934Y (en) * | 1993-05-26 | 1994-04-06 | 陈非 | Electronic high and low temp alarm controller |
| CN2200196Y (en) * | 1994-06-21 | 1995-06-07 | 中国科学院沈阳计算技术研究所 | Temp. monitor |
| US6062483A (en) * | 1995-08-03 | 2000-05-16 | Meletio; Larry B. | Electronic thermostat |
| CN201637034U (en) * | 2010-03-19 | 2010-11-17 | 青岛大牧人机械有限公司 | Control system of environment of livestock and poultry house |
| CN201796256U (en) * | 2010-09-12 | 2011-04-13 | 辽宁医学院 | Intelligent poultry house environment controller |
| CN102231065A (en) * | 2011-06-27 | 2011-11-02 | 李琼春 | Livestock and poultry house culture environment alarm system |
| CN102968141A (en) * | 2012-11-28 | 2013-03-13 | 东莞市科力钢铁线材有限公司 | Novel temperature control device and application method thereof |
| CN203224868U (en) * | 2013-04-15 | 2013-10-02 | 成都瑞途电子有限公司 | Temperature monitoring controller applicable to computer |
-
2015
- 2015-10-26 CN CN201510699146.4A patent/CN105302190A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137864Y (en) * | 1992-08-25 | 1993-07-14 | 哈尔滨市兴华电器厂 | Automatic controlled temp rgulator |
| CN2160934Y (en) * | 1993-05-26 | 1994-04-06 | 陈非 | Electronic high and low temp alarm controller |
| CN2200196Y (en) * | 1994-06-21 | 1995-06-07 | 中国科学院沈阳计算技术研究所 | Temp. monitor |
| US6062483A (en) * | 1995-08-03 | 2000-05-16 | Meletio; Larry B. | Electronic thermostat |
| CN201637034U (en) * | 2010-03-19 | 2010-11-17 | 青岛大牧人机械有限公司 | Control system of environment of livestock and poultry house |
| CN201796256U (en) * | 2010-09-12 | 2011-04-13 | 辽宁医学院 | Intelligent poultry house environment controller |
| CN102231065A (en) * | 2011-06-27 | 2011-11-02 | 李琼春 | Livestock and poultry house culture environment alarm system |
| CN102968141A (en) * | 2012-11-28 | 2013-03-13 | 东莞市科力钢铁线材有限公司 | Novel temperature control device and application method thereof |
| CN203224868U (en) * | 2013-04-15 | 2013-10-02 | 成都瑞途电子有限公司 | Temperature monitoring controller applicable to computer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329508A (en) * | 2017-07-14 | 2017-11-07 | 过成康 | A kind of low energy consumption, high-precision automatic temperature control circuit |
| CN118625879A (en) * | 2024-08-14 | 2024-09-10 | 深圳市亚细亚电子有限公司 | Temperature regulating circuit of hair waving machine |
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Application publication date: 20160203 |