CN105606248A - High-sensitivity and high-stability temperature detection and alarming device - Google Patents
High-sensitivity and high-stability temperature detection and alarming device Download PDFInfo
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- CN105606248A CN105606248A CN201610025754.1A CN201610025754A CN105606248A CN 105606248 A CN105606248 A CN 105606248A CN 201610025754 A CN201610025754 A CN 201610025754A CN 105606248 A CN105606248 A CN 105606248A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
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Abstract
Disclosed in the invention is a high-sensitivity and high-stability temperature detection and alarming device comprising a temperature detection and amplifying circuit, an ultra-low-frequency oscillator, a sound alarming circuit, and a power supply circuit. The temperature detection and amplifying circuit consists of a thermal resistor RT, resistors R1 to R4, potentiometers RP1 and RP2, capacitors Cl and C2, a diode VD1 and N2 and N3 arranged inside an operational amplifier integrated circuit IC1. The ultra-low-frequency oscillator includes Nl and N4 inside the IC1, resistors R5 to R12, capacitors C3 and C4 and light-emitting diodes VL2 and VL3. The sound alarming circuit includes resistors R14 to R16, a capacitor C5, transistors V1 and V2 and a loud speaker BL. According to the temperature detection and alarming device, elements including the thermal resistor and the operational amplifier integrated circuit and the like are used for forming the device. The device has advantages of high sensitivity and high stability; the temperature control range is from 0 DEG C to 80 DEG C; and an acousto-optic alarm signal can be sent out when a controlled temperature reaches an upper limit value or lower limit value of a set temperature. The device can be used for poultry and egg hatching and edible mushroom cultivate and the like.
Description
Technical field
The invention belongs to technical field of automatic control, be specifically related to the temperature detection warning device of a kind of high sensitivity, high stability.
Background technology
The poultry house environment controller current, cultivation industry adopts, mostly is the single-chip microcomputer of 8. These product functions are simple, Information Monitoring is limited, is not easy to expansion, and network savvy is poor, equipment actual motion state is without feedback, once equipment breaks down (as over current of motor fault), poultry raiser can not learn at once and take measures in time, and the bird of cultivation is existed to risk, for this reason, poultry raiser need patrol frequently, has both alarmed fowl group, has strengthened again poultry raiser's labour intensity. Though traditional ring control can realize ventilation according to Current Temperatures, temperature regulates and then sends control instruction, can not judge the validity of order. Traditional ring control, due to the restriction of integrated level, integrated technology, can not access numerous parameters required cultivation such as ammonia concentration, gas concentration lwevel, oxygen concentration, negative pressure, temperature to monitor comprehensively. Current culture control system master designs for single pouity dwelling place, larger to many pouity dwelling places, multiple plant networking Centralized Monitoring difficulty, enables the required expense of on-line customer also higher. Current culture control system is basic has only carried out automatic control to ventilating, and to the control of the equipment such as negative pressure fenestella, wet curtain, heating installation, substantially in manual mode, 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 accumulative total, case fatality rate, is unfavorable for the accounting of culture benefit. And tradition ring control device is Full-electronic integrated circuit, once fault must a complete set ofly be changed, expensive, spare part expense is high.
Summary of the invention
Goal of the invention: the object of the invention is in order to solve deficiency of the prior art, provide a kind of components and parts such as thermal resistor and operational amplifier integrated circuit that adopt to be made, there is the features such as highly sensitive, good stability, its temperature controlling range is 0～80 DEG C, can in the time that controlled temperature reaches the higher limit of design temperature or lower limit, send sound and light alarm signal, can be used for the temperature detection warning device of the aspects such as birds, beasts and eggs hatching, breed of edible fungus.
Technical scheme: a kind of high sensitivity of the present invention, the temperature detection warning device of high stability, comprises temperature detection amplifying circuit, ultralow-frequency oscillator, audible alarm circuit and power circuit, described temperature detection amplifying circuit is by thermal resistor RT, resistor R1～R4, potentiometer RP1, RP2, capacitor Cl, C2, the N2 of diode VD1 and operational amplifier IC 1 inside, N3 composition, the positive pole of the N2 of described operational amplifier IC 1 inside is connected in parallel to resistor R1 and thermal resistor RT, described thermal resistor RT is also connected to the positive pole of the N3 of operational amplifier IC 1 inside by capacitor Cl, the negative pole of the N2 of described operational amplifier IC 1 inside is connected with potentiometer RP1, described potentiometer RP1 is connected with respectively resistor R3 and potentiometer RP2, described potentiometer RP2 is also connected with negative pole and the resistor R2 of the N3 of operational amplifier IC 1 inside, and described resistor R1～R3 is also connected with capacitor C2 jointly, diode VD1 and resistor R4, described ultralow-frequency oscillator is by the Nl of IC1 inside, N4, resistor R5～R12, capacitor C3, C4 and light emitting diode VL2, VL3 composition, the negative pole of the N1 of described IC1 inside is connected in parallel to respectively diode VD2 and resistor R5, described resistor R5 is also connected with resistor R6, described resistor R6 is connected with respectively diode VD3, the negative pole of the N4 of IC1 inside, capacitor C4 and resistor R11, described resistor R11 is also connected to the output of N4, described capacitor C4 is also connected with capacitor C3, described capacitor C3 is connected to the output of N1 by resistor R8, the positive pole of described N1 is connected with resistor R9 and is connected to the output of N1 by resistor R7, described resistor R9 is connected with the positive pole of N4 by resistor R10, the positive pole of described N4 is also connected to the output of N4 by resistor R12, described N1, the output of N4 is also connected with respectively light emitting diode VL2, VL3, described audible alarm circuit is made up of resistor R14～R16, capacitor C5, transistor V1, V2 and loudspeaker BL, described resistor R14, resistor R15 are connected in parallel to light emitting diode VL2, described resistor R15 is also connected in parallel to the base stage of resistor R16, capacitor C5 and transistor V1, the colelctor electrode of described transistor V1 is connected with the base stage of transistor V2, and the colelctor electrode of described transistor V2 is connected with loudspeaker BL, described power circuit is made up of power transformer T, rectifier bridge stack UR, filter condenser C6, C7, circuit of three-terminal voltage-stabilizing integrated IC2, resistor R13 and light emitting diode VL1, the input of described circuit of three-terminal voltage-stabilizing integrated IC2 is connected with respectively capacitor C6, rectifier bridge stack UR and power transformer T, the output of described circuit of three-terminal voltage-stabilizing integrated IC2 is connected in parallel to capacitor C7 and resistor R13, and described resistor R13 is also connected with light emitting diode VL1.
Further, described resistor R1～R16 selects 1/4W metal film resistor or carbon film resistor.
Further, described thermal resistor RT selects the thermal resistor of negative temperature coefficient.
Further, all to select withstand voltage be the aluminium electrolutic capacitor of 16V for described capacitor C1～C4, C6, C7; C5 selects dacron terylene condenser or monolithic capacitor.
Further, described diode VD1～VD3 all selects lN4148 type transwitch diode.
Further, described transistor V1 selects 59013 or 3DG6 type silicon NPN transistor; V2 selects 58550 or C8550,3CG8550 type silicon PNP transistor.
Further, described IC1 selects LM324 type operational amplifier integrated circuit; IC2 selects LM7806 type circuit of three-terminal voltage-stabilizing integrated.
Further, described power transformer T selects the power transformer that 3～5W, secondary voltage are 10V.
Beneficial effect: temperature alarming device of the present invention adopts the components and parts such as thermal resistor and operational amplifier integrated circuit to be made, there is the features such as highly sensitive, good stability, its temperature controlling range is 0～80 DEG C, can in the time that controlled temperature reaches the higher limit of design temperature or lower limit, send sound and light alarm signal, can be used for the aspects such as birds, beasts and eggs hatching, breed of edible fungus.
Brief description of the drawings
Fig. 1 is circuit principle structure figure of the present invention.
Detailed description of the invention
A kind of high sensitivity as shown in Figure 1, the temperature detection warning device of high stability, comprise temperature detection amplifying circuit, ultralow-frequency oscillator, audible alarm circuit and power circuit.
Described temperature detection amplifying circuit is by thermal resistor RT, resistor R1～R4, potentiometer RP1, RP2, capacitor Cl, C2, the N2 of diode VD1 and operational amplifier IC 1 inside, N3 composition, the positive pole of the N2 of described operational amplifier IC 1 inside is connected in parallel to resistor R1 and thermal resistor RT, described thermal resistor RT is also connected to the positive pole of the N3 of operational amplifier IC 1 inside by capacitor Cl, the negative pole of the N2 of described operational amplifier IC 1 inside is connected with potentiometer RP1, described potentiometer RP1 is connected with respectively resistor R3 and potentiometer RP2, described potentiometer RP2 is also connected with negative pole and the resistor R2 of the N3 of operational amplifier IC 1 inside, described resistor R1～R3 is also connected with capacitor C2 jointly, diode VD1 and resistor R4.
Described ultralow-frequency oscillator is by the Nl of IC1 inside, N4, resistor R5～R12, capacitor C3, C4 and light emitting diode VL2, VL3 composition, the negative pole of the N1 of described IC1 inside is connected in parallel to respectively diode VD2 and resistor R5, described resistor R5 is also connected with resistor R6, described resistor R6 is connected with respectively diode VD3, the negative pole of the N4 of IC1 inside, capacitor C4 and resistor R11, described resistor R11 is also connected to the output of N4, described capacitor C4 is also connected with capacitor C3, described capacitor C3 is connected to the output of N1 by resistor R8, the positive pole of described N1 is connected with resistor R9 and is connected to the output of N1 by resistor R7, described resistor R9 is connected with the positive pole of N4 by resistor R10, the positive pole of described N4 is also connected to the output of N4 by resistor R12, described N1, the output of N4 is also connected with respectively light emitting diode VL2, VL3.
Described audible alarm circuit is made up of resistor R14～R16, capacitor C5, transistor V1, V2 and loudspeaker BL, described resistor R14, resistor R15 are connected in parallel to light emitting diode VL2, described resistor R15 is also connected in parallel to the base stage of resistor R16, capacitor C5 and transistor V1, the colelctor electrode of described transistor V1 is connected with the base stage of transistor V2, and the colelctor electrode of described transistor V2 is connected with loudspeaker BL.
Described power circuit is made up of power transformer T, rectifier bridge stack UR, filter condenser C6, C7, circuit of three-terminal voltage-stabilizing integrated IC2, resistor R13 and light emitting diode VL1, the input of described circuit of three-terminal voltage-stabilizing integrated IC2 is connected with respectively capacitor C6, rectifier bridge stack UR and power transformer T, the output of described circuit of three-terminal voltage-stabilizing integrated IC2 is connected in parallel to capacitor C7 and resistor R13, and described resistor R13 is also connected with light emitting diode VL1.
The components and parts of foregoing circuit are selected as follows:
Further, described resistor R1～R16 selects 1/4W metal film resistor or carbon film resistor.
Further, described thermal resistor RT selects the thermal resistor of negative temperature coefficient.
Further, all to select withstand voltage be the aluminium electrolutic capacitor of 16V for described capacitor C1～C4, C6, C7; C5 selects dacron terylene condenser or monolithic capacitor.
Further, described diode VD1～VD3 all selects lN4148 type transwitch diode.
Further, described transistor V1 selects 59013 or 3DG6 type silicon NPN transistor; V2 selects 58550 or C8550,3CG8550 type silicon PNP transistor.
Further, described IC1 selects LM324 type operational amplifier integrated circuit; IC2 selects LM7806 type circuit of three-terminal voltage-stabilizing integrated.
Further, described power transformer T selects the power transformer that 3～5W, secondary voltage are 10V.
The operation principle of this circuit is as follows:
Alternating current 220V voltage, after T step-down, UR rectification, C6 filtering and IC2 voltage stabilizing, is temperature detection amplifying circuit, ultralow-frequency oscillator and provide+6V of sound warning circuit voltage.
Potentiometer RP1 is used for the higher limit of design temperature, and RP2 is used for the lower limit of design temperature. In the time that controlled temperature is within the scope of design temperature, N2 and N3 all export high level, and VD2 and YD3 conducting are not worked ultralow-frequency oscillator and sound warning circuit, and BL is sounding not.
In the time that controlled temperature exceedes the higher limit of design temperature, the resistance of RT reduces, make prisoner's N2 positive input end current potential lower than the reference voltage of inverting input output low level, VD2 cut-off, the ultralow-frequency oscillator oscillatory work being formed by Nl and R5, R7～RiO, C3, VL2 flashing; This ultra-low frequency oscillation signal is modulated the audio frequency oscillator being made up of R14～R16, C3 and VI, V2 simultaneously, drives BL to send buzzing chimes of doom intermittently.
When controlled temperature is during lower than the lower limit of design temperature, the resistance of RT increases, and makes N3 output low level, YD3 cut-off, the ultralow-frequency oscillator oscillatory work being made up of N4 and R1O～R12, C4, YL3 flashing; Meanwhile, this ultra-low frequency oscillation signal is modulated audio frequency oscillator, drives BL to send chimes of doom.
Temperature alarming device of the present invention adopts the components and parts such as thermal resistor and operational amplifier integrated circuit to be made, there is the features such as highly sensitive, good stability, its temperature controlling range is 0～80 DEG C, can in the time that controlled temperature reaches the higher limit of design temperature or lower limit, send sound and light alarm signal, can be used for the aspects such as birds, beasts and eggs hatching, breed of edible fungus.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a high sensitivity, the temperature detection warning device of high stability, is characterized in that: comprise temperature detection amplifying circuit, ultralow-frequency oscillator, audible alarm circuit and power circuit, described temperature detection amplifying circuit is by thermal resistor RT, resistor R1～R4, potentiometer RP1, RP2, capacitor Cl, C2, the N2 of diode VD1 and operational amplifier IC 1 inside, N3 composition, the positive pole of the N2 of described operational amplifier IC 1 inside is connected in parallel to resistor R1 and thermal resistor RT, described thermal resistor RT is also connected to the positive pole of the N3 of operational amplifier IC 1 inside by capacitor Cl, the negative pole of the N2 of described operational amplifier IC 1 inside is connected with potentiometer RP1, described potentiometer RP1 is connected with respectively resistor R3 and potentiometer RP2, described potentiometer RP2 is also connected with negative pole and the resistor R2 of the N3 of operational amplifier IC 1 inside, and described resistor R1～R3 is also connected with capacitor C2 jointly, diode VD1 and resistor R4, described ultralow-frequency oscillator is by the Nl of IC1 inside, N4, resistor R5～R12, capacitor C3, C4 and light emitting diode VL2, VL3 composition, the negative pole of the N1 of described IC1 inside is connected in parallel to respectively diode VD2 and resistor R5, described resistor R5 is also connected with resistor R6, described resistor R6 is connected with respectively diode VD3, the negative pole of the N4 of IC1 inside, capacitor C4 and resistor R11, described resistor R11 is also connected to the output of N4, described capacitor C4 is also connected with capacitor C3, described capacitor C3 is connected to the output of N1 by resistor R8, the positive pole of described N1 is connected with resistor R9 and is connected to the output of N1 by resistor R7, described resistor R9 is connected with the positive pole of N4 by resistor R10, the positive pole of described N4 is also connected to the output of N4 by resistor R12, described N1, the output of N4 is also connected with respectively light emitting diode VL2, VL3, described audible alarm circuit is made up of resistor R14～R16, capacitor C5, transistor V1, V2 and loudspeaker BL, described resistor R14, resistor R15 are connected in parallel to light emitting diode VL2, described resistor R15 is also connected in parallel to the base stage of resistor R16, capacitor C5 and transistor V1, the colelctor electrode of described transistor V1 is connected with the base stage of transistor V2, and the colelctor electrode of described transistor V2 is connected with loudspeaker BL, described power circuit is made up of power transformer T, rectifier bridge stack UR, filter condenser C6, C7, circuit of three-terminal voltage-stabilizing integrated IC2, resistor R13 and light emitting diode VL1, the input of described circuit of three-terminal voltage-stabilizing integrated IC2 is connected with respectively capacitor C6, rectifier bridge stack UR and power transformer T, the output of described circuit of three-terminal voltage-stabilizing integrated IC2 is connected in parallel to capacitor C7 and resistor R13, and described resistor R13 is also connected with light emitting diode VL1.
2. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: described resistor R1～R16 selects 1/4W metal film resistor or carbon film resistor.
3. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: described thermal resistor RT selects the thermal resistor of negative temperature coefficient.
4. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: it is the aluminium electrolutic capacitor of 16V that described capacitor C1～C4, C6, C7 all select withstand voltage; C5 selects dacron terylene condenser or monolithic capacitor.
5. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: described diode VD1～VD3 all selects lN4148 type transwitch diode.
6. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: described transistor V1 selects 59013 or 3DG6 type silicon NPN transistor; V2 selects 58550 or C8550,3CG8550 type silicon PNP transistor.
7. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: described IC1 selects LM324 type operational amplifier integrated circuit; IC2 selects LM7806 type circuit of three-terminal voltage-stabilizing integrated.
8. the temperature detection warning device of a kind of high sensitivity according to claim 1, high stability, is characterized in that: described power transformer T selects the power transformer that 3～5W, secondary voltage are 10V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025754.1A CN105606248A (en) | 2016-01-15 | 2016-01-15 | High-sensitivity and high-stability temperature detection and alarming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025754.1A CN105606248A (en) | 2016-01-15 | 2016-01-15 | High-sensitivity and high-stability temperature detection and alarming device |
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| CN105606248A true CN105606248A (en) | 2016-05-25 |
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| CN201610025754.1A Pending CN105606248A (en) | 2016-01-15 | 2016-01-15 | High-sensitivity and high-stability temperature detection and alarming device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105094175A (en) * | 2015-08-18 | 2015-11-25 | 芜湖诚通自动化设备有限公司 | Agriculture automation cultivation temperature control circuit |
| CN105183035A (en) * | 2015-08-10 | 2015-12-23 | 芜湖瑞泰精密机械有限公司 | Industrial temperature acquisition control circuit |
-
2016
- 2016-01-15 CN CN201610025754.1A patent/CN105606248A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183035A (en) * | 2015-08-10 | 2015-12-23 | 芜湖瑞泰精密机械有限公司 | Industrial temperature acquisition control circuit |
| CN105094175A (en) * | 2015-08-18 | 2015-11-25 | 芜湖诚通自动化设备有限公司 | Agriculture automation cultivation temperature control circuit |
Non-Patent Citations (1)
| Title |
|---|
| 全新实用电路集粹编辑委员会: "《全新实用电路集粹 下》", 31 January 2006, 机械工业出版社 * |
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Application publication date: 20160525 |
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