CN107687903A - A kind of high-precision temperature automatic detection and alarming device - Google Patents
A kind of high-precision temperature automatic detection and alarming device Download PDFInfo
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- CN107687903A CN107687903A CN201710710165.1A CN201710710165A CN107687903A CN 107687903 A CN107687903 A CN 107687903A CN 201710710165 A CN201710710165 A CN 201710710165A CN 107687903 A CN107687903 A CN 107687903A
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- circuit
- transistor
- resistor
- automatic detection
- alarming device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of high-precision temperature automatic detection and alarming device, including temperature detection control circuit, temperature indicator circuit and sound warning circuit, the temperature detection control circuit controls IC 1 and potentiometer RP1, RP2 to form by TEMP；The temperature indicator circuit is made up of resistor R1~R4, capacitor C, transistor V1, V2, light emitting diode VL1, VL2 and voltage-regulator diode VS；The audible alarm circuit is made up of sound effect integrated circuit IC2, resistor R5, transistor V3 and loudspeaker BL.A kind of low-loss of the present invention, the temperature detection alarm circuit of high life, its circuit structure design is reasonable, and automaticity is high and easy to control, has the advantages of low-loss, high life.
Description
Technical field
The invention belongs to technical field of automatic control, and in particular to a kind of high-precision temperature automatic detection and warning dress
Put.
Background technology
Traditional temperature acquisition and warning circuit design power track to track discharge circuit to realize temperature using positive-negative power
Conversion and warning circuit, its circuit it is more complicated and also output negative voltage be unfavorable for A/D converter directly adopt
Collection；Also there is the method for directly using software processing now, by microprocessor collecting temperature data, software algorithm is come to temperature
Data carry out processing alarm, and this method is fairly simple, but reliability is not high, when microprocessor breaks down, whole report
Alert system cannot normal work.
The content of the invention
Goal of the invention：The invention aims to solve deficiency of the prior art, there is provided a kind of circuit structure design
Rationally, automaticity is high and easy to control, has high-precision temperature diagnosis and alarming device.
Technical scheme：A kind of high-precision temperature automatic detection of the present invention and alarming device, including temperature detection control
Circuit, temperature indicator circuit and sound warning circuit processed, the temperature detection control circuit control integrated circuit by TEMP
IC1 and potentiometer RP1, RP2 composition, 2 pin of the TEMP control IC 1 are connected with potentiometer RP1, the temperature
3 pin of degree sensing control IC 1 are connected with potentiometer RP2；The temperature indicator circuit is by resistor R1~R4, electric capacity
Device C, transistor V1, V2, light emitting diode VL1, VL2 and voltage-regulator diode VS compositions, one end of the resistor R1 and temperature
The 6 pin connection of sensing control IC 1, the other end of the resistor R1 are connected with transistor V1 base stage, the crystalline substance
Body pipe V1 colelctor electrode is connected with light emitting diode VL1 and resistor R3, the emitter stage of the transistor V1 are connected with electric capacity
Device C, the resistor R2 one end are connected with 7 pin of TEMP control IC 1, the other end of the resistor R2
It is connected with transistor V2 base stage, the emitter stage of the transistor V1 is connected with light emitting diode VL2 and resistor R4, described
Transistor V2 colelctor electrode is connected with voltage-regulator diode VS；The audible alarm circuit is by sound effect integrated circuit IC2, resistor
R5, transistor V3 and loudspeaker BL compositions, the input of the sound effect integrated circuit IC2 is connected with voltage-regulator diode VS, described
Sound effect integrated circuit IC2 output end is connected with transistor V3 base stage, and the colelctor electrode of the transistor V3 is connected with loudspeaker
BL。
Further, the resistor R1~R5 selects l/4W metal film resistors or carbon film resistor.
Further,：The RP1 and RP2 select small-sized organic solid potentiometer.
Further, the C is from the aluminium electrolutic capacitor that pressure voltage is 10V.
Further, the voltage-regulator diode VS selects 1/2W, 3V silicon voltage regulator diode.
Further, the transistor V1 and V3 selects S9013 or C8050 type silicon NPN transistors；V2 from S9015 or
C8550 type silicon PNP transistors.
Further, the ICl selects TC602 type temperature sensor integrated circuits；IC2 is integrated from KD9561 type audios
Circuit.
Further, the loudspeaker BL is from 0.25W, 8 Ω micro electric loudspeaker.
Beneficial effect：A kind of high-precision temperature automatic detection and alarming device of the present invention, its circuit structure design is reasonable,
Automaticity is high and easy to control, has the advantages of low-loss, high life.
Brief description of the drawings
Fig. 1 is the control circuit schematic diagram of the present invention.
Embodiment
A kind of high-precision temperature automatic detection as shown in Figure 1 and alarming device, including temperature detection control circuit, temperature
Indicating circuit and sound warning circuit.
The temperature detection control circuit controls IC 1 and potentiometer RP1, RP2 to form by TEMP, described
2 pin of TEMP control IC 1 are connected with potentiometer RP1,3 pin of the TEMP control IC 1
It is connected with potentiometer RP2.
The temperature indicator circuit is by resistor R1~R4, capacitor C, transistor V1, V2, light emitting diode VL1, VL2
Formed with voltage-regulator diode VS, one end of the resistor R1 is connected with 6 pin of TEMP control IC 1, described
The resistor R1 other end is connected with transistor V1 base stage, and the colelctor electrode of the transistor V1 is connected with light emitting diode VL1
And resistor R3, the transistor V1 emitter stage are connected with capacitor C, the resistor R2 one end and TEMP control
The 7 pin connection of IC 1 processed, the other end of the resistor R2 are connected with transistor V2 base stage, the transistor V1
Emitter stage be connected with light emitting diode VL2 and resistor R4, the colelctor electrode of the transistor V2 are connected with voltage-regulator diode
VS。
The audible alarm circuit is made up of sound effect integrated circuit IC2, resistor R5, transistor V3 and loudspeaker BL, institute
The input for stating sound effect integrated circuit IC2 is connected with voltage-regulator diode VS, and the output end of the sound effect integrated circuit IC2 is connected with
Transistor V3 base stage, the colelctor electrode of the transistor V3 are connected with loudspeaker BL.
Each component selection of foregoing circuit is as follows：
Further, the resistor R1~R5 selects l/4W metal film resistors or carbon film resistor.
Further,：The RP1 and RP2 select small-sized organic solid potentiometer.
Further, the C is from the aluminium electrolutic capacitor that pressure voltage is 10V.
Further, the voltage-regulator diode VS selects 1/2W, 3V silicon voltage regulator diode.
Further, the transistor V1 and V3 selects S9013 or C8050 type silicon NPN transistors；V2 from S9015 or
C8550 type silicon PNP transistors.
Further, the ICl selects TC602 type temperature sensor integrated circuits；IC2 is integrated from KD9561 type audios
Circuit.
Further, the loudspeaker BL is from 0.25W, 8 Ω micro electric loudspeaker.
The operation principle of this circuit is as follows：
RP1 is used for setting the lower limit of alarm temperature, and RP2 is used for setting the higher limit of alarm temperature.
IC1 is Intelligent temperature sensor integrated circuit, for detection temperature.Work as proper temperature（Dut temperature is being alarmed
Between the higher limit and lower limit of temperature）When, IC1 6 pin output low level, 7 pin output high level, VI and V2 are in ending
State, VL1 and VL2 do not light, and IC2 and V3 do not work, BL not sounding.
When dut temperature is down to the lower limit of alarm temperature, IC1 7 pin are changed into low level from high level, turn on V2,
VL2 is lighted, and instruction dut temperature is relatively low：IC2 energization work simultaneously, the audio electric signal that it is exported drive BL after V3 amplifies
Send alarm.
When dut temperature is increased to the higher limit of alarm temperature, IC1 6 pin are changed into high level from low level, lead VI
Logical, VL1 is lighted, and instruction dut temperature is higher；IC2 energization work simultaneously.
A kind of low-loss of the present invention, the temperature detection alarm circuit of high life, its circuit structure design is reasonable, automation
Degree is high and easy to control, has the advantages of low-loss, high life.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of high-precision temperature automatic detection and alarming device, it is characterised in that：Refer to including temperature detection control circuit, temperature
Show circuit and sound warning circuit, the temperature detection control circuit controls IC 1 and potentiometer by TEMP
RP1, RP2 are formed, and 2 pin of the TEMP control IC 1 are connected with potentiometer RP1, the TEMP control
3 pin of IC 1 are connected with potentiometer RP2；The temperature indicator circuit is by resistor R1~R4, capacitor C, transistor
V1, V2, light emitting diode VL1, VL2 and voltage-regulator diode VS compositions, one end and the TEMP domination set of the resistor R1
6 pin into IC circuit 1 connect, and the other end of the resistor R1 is connected with transistor V1 base stage, the collection of the transistor V1
Electrode is connected with light emitting diode VL1 and resistor R3, the transistor V1 emitter stage are connected with capacitor C, the electricity
Resistance device R2 one end is connected with 7 pin of TEMP control IC 1, and the other end of the resistor R2 is connected with crystal
Pipe V2 base stage, the emitter stage of the transistor V1 are connected with light emitting diode VL2 and resistor R4, the transistor V2's
Colelctor electrode is connected with voltage-regulator diode VS；The audible alarm circuit is by sound effect integrated circuit IC2, resistor R5, transistor V3
Formed with loudspeaker BL, the input of the sound effect integrated circuit IC2 is connected with voltage-regulator diode VS, the sound effect integrated circuit
IC2 output end is connected with transistor V3 base stage, and the colelctor electrode of the transistor V3 is connected with loudspeaker BL.
2. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：The resistance
Device R1~R5 selects l/4W metal film resistors or carbon film resistor.
3. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：The RP1
Small-sized organic solid potentiometer is selected with RP2.
4. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：The C choosings
The aluminium electrolutic capacitor for being 10V with pressure voltage.
5. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：The voltage stabilizing
Diode VS selects 1/2W, 3V silicon voltage regulator diode.
6. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：The crystal
Pipe V1 and V3 select S9013 or C8050 type silicon NPN transistors；V2 selects S9015 or C8550 type silicon PNP transistors.
7. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：The ICl
From TC602 type temperature sensor integrated circuits；IC2 selects KD9561 type sound effect integrated circuits.
8. a kind of high-precision temperature automatic detection according to claim 1 and alarming device, it is characterised in that：It is described to raise one's voice
Device BL is from 0.25W, 8 Ω micro electric loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710165.1A CN107687903A (en) | 2017-08-18 | 2017-08-18 | A kind of high-precision temperature automatic detection and alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710165.1A CN107687903A (en) | 2017-08-18 | 2017-08-18 | A kind of high-precision temperature automatic detection and alarming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107687903A true CN107687903A (en) | 2018-02-13 |
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ID=61153433
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710710165.1A Pending CN107687903A (en) | 2017-08-18 | 2017-08-18 | A kind of high-precision temperature automatic detection and alarming device |
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| CN (1) | CN107687903A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203163882U (en) * | 2013-03-11 | 2013-08-28 | 成都艺创科技有限公司 | Dual-limit temperature alarming device circuit |
| CN105547507A (en) * | 2016-01-15 | 2016-05-04 | 芜湖市恒峰科技有限公司 | Low-loss long-service-life temperature detection alarm circuit |
| CN105573213A (en) * | 2016-01-15 | 2016-05-11 | 芜湖市恒峰科技有限公司 | Automation cultivation and watering control circuit |
| CN105652921A (en) * | 2015-11-13 | 2016-06-08 | 芜湖市恒峰科技有限公司 | Thermostatic control apparatus with self-protection and over-limit alarm |
| CN205432084U (en) * | 2016-02-23 | 2016-08-10 | 中国烟草总公司广东省公司 | A double-limit temperature alarm circuit for solar flue-cured tobacco houses |
-
2017
- 2017-08-18 CN CN201710710165.1A patent/CN107687903A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203163882U (en) * | 2013-03-11 | 2013-08-28 | 成都艺创科技有限公司 | Dual-limit temperature alarming device circuit |
| CN105652921A (en) * | 2015-11-13 | 2016-06-08 | 芜湖市恒峰科技有限公司 | Thermostatic control apparatus with self-protection and over-limit alarm |
| CN105547507A (en) * | 2016-01-15 | 2016-05-04 | 芜湖市恒峰科技有限公司 | Low-loss long-service-life temperature detection alarm circuit |
| CN105573213A (en) * | 2016-01-15 | 2016-05-11 | 芜湖市恒峰科技有限公司 | Automation cultivation and watering control circuit |
| CN205432084U (en) * | 2016-02-23 | 2016-08-10 | 中国烟草总公司广东省公司 | A double-limit temperature alarm circuit for solar flue-cured tobacco houses |
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Application publication date: 20180213 |