CN104568179A - Overheating alarm circuit for electrical equipment - Google Patents
Overheating alarm circuit for electrical equipment Download PDFInfo
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- CN104568179A CN104568179A CN201310486016.3A CN201310486016A CN104568179A CN 104568179 A CN104568179 A CN 104568179A CN 201310486016 A CN201310486016 A CN 201310486016A CN 104568179 A CN104568179 A CN 104568179A
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Abstract
The invention discloses an overheating alarm circuit for electrical equipment. The circuit comprises a first resistor to a seventh resistor, a slide rheostat, an NTC (negative temperature coefficient) thermistor, a first triode, a second triode, a third triode, a first capacitor to an eighth capacitor, a first chip, a second chip, a third chip, a fourth chip, a voltage stabilizing diode, a loudspeaker and a step-down rectifier. A worker for maintaining the electrical equipment can accurately learn about the overheated electrical equipment when hearing alarm sound produced by the loudspeaker, so that corresponding measures are taken to treat the overheated electrical equipment, the equipment can be maintained and repaired in time, the maintenance yield of the equipment of an enterprise is increased, and the production efficiency of the enterprise is improved to a certain degree; the overheating alarm circuit for the electrical equipment adopts an integrated chip technology, has the advantages of low cost, simplicity in installation and the like, and facilitates popularization.
Description
Technical field
The present invention relates to a kind of warning circuit, particularly relate to a kind of device of overheating of electrical warning circuit.
Background technology
For a long time, running and the production of most factory of China all will rely on large-scale plant equipment and electrical equipment, can know the running status of the electrical equipment of factory thus and be directly connected to the economic benefit of enterprise serviceable life.If rational maintenance measure or effective safety management can not be taked, then can not ensure the quality safety of electrical equipment and the schedule of productive target, in order to reach high efficiency production, create more enterprise value, often electrical equipment day and night ceaselessly works, device of overheating of electrical is the problem that present most of factory all will run into, and overheated meeting causes electrical equipment to break down, and may cause the generation of industrial fire time serious.The electrical equipment of some advanced persons has the overheating protection of oneself; automatically can detect then power-off to shut down when temperature overheating; can normally work again after apparatus cools; so the reason that plant maintenance maintainer often can not find electrical equipment to shut down; only as once accidental glitch; and some electrical equipments fallen behind often do not have the warning of apparatus overheat to protect, be overheatedly easy to cause the fault of equipment to occur.
Summary of the invention
Object of the present invention is just to provide a kind of device of overheating of electrical warning circuit to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes the first resistance to the 7th resistance, slide rheostat, NTC thermistor, first triode, second triode, 3rd triode, first electric capacity is to the 8th electric capacity, first chip, second chip, 3rd chip, 4th chip, voltage stabilizing diode, loudspeaker and buck rectifier, the first end of described first resistance simultaneously with the first end of described second resistance, the first end of described 3rd resistance, 3rd pin of described first chip, the first end of described 7th resistance, second pin of described 3rd chip, the positive pole of described 6th electric capacity is connected with the first pin of described 4th chip, second end of described first resistance is connected with the first end of described slide rheostat and sliding end simultaneously, second end of described slide rheostat is connected with the base stage of described first triode and the base stage of described second triode simultaneously, the collector of described first triode is unsettled, the emitter of described first triode simultaneously with the emitter of described 3rd triode, the negative pole of described first electric capacity, 8th pin of described first chip, second end of described second electric capacity, 4th pin of described second chip, the positive pole of described voltage stabilizing diode, 5th pin of described 3rd chip and the 6th pin, second end of described loudspeaker, the negative pole of described 6th electric capacity, 3rd pin of described 4th chip, the negative pole of described 7th electric capacity is connected with the 4th pin of described buck rectifier, the emitter of described second triode connects the base stage of described 3rd triode, the collector of described second triode simultaneously with the collector of described 3rd triode, second end of described 3rd resistance is connected with the second pin of described first chip, second end of described second resistance is connected with the first end of described 4th resistance and the first pin of described first chip simultaneously, second end of described 4th resistance is connected with the 6th pin of described first chip and the positive pole of the 5th pin and described first electric capacity simultaneously, 7th pin of described first chip connects the first end of described second electric capacity, 4th pin of described first chip connects the first end of described 5th resistance, second end of described 5th resistance connects the first pin of described second chip, second pin of described second chip connects the first end of described 6th resistance, second end of described 6th resistance simultaneously with the 3rd pin of described second chip, second end of described 7th resistance is connected with the negative pole of described voltage stabilizing diode, 5th pin of described second chip connects the first end of described 3rd electric capacity, second end of described 3rd electric capacity connects the first pin of described 3rd chip, 3rd pin of described 3rd chip and the 4th pin are connected with the first end of described 4th electric capacity and the second end respectively, 7th pin of described 3rd chip connects the first end of described 5th electric capacity, second end of described 5th electric capacity connects the first end of described loudspeaker, second pin of described 4th chip is connected with the positive pole of described 7th electric capacity and the 3rd pin of described buck rectifier simultaneously, first pin of described buck rectifier is connected with the described first end of the 8th electric capacity and the first end of described NTC thermistor simultaneously, second end of described 8th electric capacity is connected with the second end of described NTC thermistor and cathode voltage input end simultaneously, second pin of described buck rectifier connects cathode voltage input end.
Particularly, described first chip is the integrated chip of model NE555, described second chip is the simulation sounding integrated chip of model TM-801A, and described 3rd chip is the audio frequency amplification chip of model LM-386, and described 4th chip is the three-terminal voltage-stabilizing integrated chip of model 7806; Described first electric capacity, described 6th electric capacity, described 7th electric capacity have been polar capacitor.
Beneficial effect of the present invention is:
When device of overheating of electrical, loudspeaker of the present invention can send the alarm sound of simulation, prompting staff equipment running temperature exceedes normal working temperature, and staff hears that alarm sound just knows what device of overheating of electrical caused, just can take the operation of corresponding measure arrestment.By warning in advance, staff can process the problems of excessive heat of electrical equipment timely, avoids the generation of equipment failure, can safeguard timely equipment and manage, effectively decrease the loss of enterprise.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: the present invention includes the first resistance R1 to the 7th resistance R7, slide rheostat RP, NTC thermistor RT, first triode VT1, second triode VT2, 3rd triode VT3, first electric capacity C1 is to the 8th electric capacity C8, first chip IC 1, second chip IC 2, 3rd chip IC 3, 4th chip IC4, voltage stabilizing diode D, loudspeaker B and buck rectifier Q, the first end of the first resistance R1 simultaneously with the first end of the second resistance R2, the first end of the 3rd resistance R3, 3rd pin of the first chip IC 1, the first end of the 7th resistance R7, second pin of the 3rd chip IC 3, the positive pole of the 6th electric capacity C6 is connected with first pin of the 4th chip IC4, second end of the first resistance R1 is connected with the first end of slide rheostat RP and sliding end simultaneously, second end of slide rheostat RP is connected with the base stage of the first triode VT1 and the base stage of the second triode VT2 simultaneously, the collector of the first triode VT1 is unsettled, the emitter of the first triode VT1 simultaneously with the emitter of the 3rd triode VT3, the negative pole of the first electric capacity C1, IC1 the 8th pin of the first chip, second end of the second electric capacity C2, 4th pin of the second chip IC 2, the positive pole of voltage stabilizing diode D, 5th pin of the 3rd chip IC 3 and the 6th pin, second end of loudspeaker B, the negative pole of the 6th electric capacity C6, 3rd pin of the 4th chip IC4, the negative pole of the 7th electric capacity C7 is connected with the 4th pin of buck rectifier Q, the emitter of the second triode VT2 connects the base stage of the 3rd triode VT3, the collector of the second triode VT2 simultaneously with the collector of the 3rd triode VT3, second end of the 3rd resistance R3 is connected with the second pin of the first chip IC 1, second end of the second resistance R2 is connected with the first end of the 4th resistance R4 and the first pin of the first chip IC 1 simultaneously, second end of the 4th resistance R4 is connected with the 6th pin of the first chip IC 1 and the positive pole of the 5th pin and the first electric capacity C1 simultaneously, 7th pin of the first chip IC 1 connects the first end of the second electric capacity C2, 4th pin of the first chip IC 1 connects the first end of the 5th resistance R5, second end of the 5th resistance R5 connects the first pin of the second chip IC 2, second pin of the second chip IC 2 connects the first end of the 6th resistance R6, second end of the 6th resistance R6 simultaneously with the 3rd pin of the second chip IC 2, second end of the 7th resistance R7 is connected with the negative pole of voltage stabilizing diode D, 5th pin of the second chip IC 2 connects the first end of the 3rd electric capacity C3, second end of the 3rd electric capacity C3 connects the first pin of the 3rd chip IC 3, 3rd pin of the 3rd chip IC 3 and the 4th pin are connected with the first end of the 4th electric capacity C4 and the second end respectively, 7th pin of the 3rd chip IC 3 connects the first end of the 5th electric capacity C5, second end of the 5th electric capacity C5 connects the first end of loudspeaker B, second pin of the 4th chip IC4 is connected with the positive pole of the 7th electric capacity C7 and the 3rd pin of buck rectifier Q simultaneously, first pin of buck rectifier Q is connected with the first end of the 8th electric capacity C8 and the first end of NTC thermistor RT simultaneously, second end of the 8th electric capacity C8 is connected with second end of NTC thermistor RT and cathode voltage input end simultaneously, second pin of buck rectifier Q connects cathode voltage input end, first chip IC 1 is the integrated chip of model NE555, second chip IC 2 is the simulation sounding integrated chip of model TM-801A, 3rd chip IC 3 is the audio frequency amplification chip of model LM-386,4th chip IC4 is the three-terminal voltage-stabilizing integrated chip of model 7806, and the first electric capacity C1, the 6th electric capacity C2, the 7th electric capacity C7 have been polar capacitor.
As shown in Figure 1: the present invention is made up of the NTC thermistor RT of negative temperature coefficient, the first chip IC 1, second chip IC 2, the 3rd chip IC 3 and buck rectifier Q etc.First chip IC 1 and the second resistance R2, 4th resistance R4, first electric capacity C1 etc. form a controllable type multivibrator, when electrical equipment exceedes maximum operating temperature, the temperature of NTC thermistor raises and reaches transition point, resistance exponentially form declines, buck rectifier Q two ends input voltage increases, output voltage after transformation and rectification also increases thereupon, reach the operating voltage of whole circuit, whole circuit is started working, wherein simulation chimes of doom sends from the second chip IC 2 and exports from loudspeaker B after the 3rd chip IC 3 is amplified, reach the alerting effects of device of overheating of electrical.
Claims (3)
1. a device of overheating of electrical circuit for alarming, it is characterized in that: comprise the first resistance to the 7th resistance, slide rheostat, NTC thermistor, first triode, second triode, 3rd triode, first electric capacity is to the 8th electric capacity, first chip, second chip, 3rd chip, 4th chip, voltage stabilizing diode, loudspeaker and buck rectifier, the first end of described first resistance simultaneously with the first end of described second resistance, the first end of described 3rd resistance, 3rd pin of described first chip, the first end of described 7th resistance, second pin of described 3rd chip, the positive pole of described 6th electric capacity is connected with the first pin of described 4th chip, second end of described first resistance is connected with the first end of described slide rheostat and sliding end simultaneously, second end of described slide rheostat is connected with the base stage of described first triode and the base stage of described second triode simultaneously, the collector of described first triode is unsettled, the emitter of described first triode simultaneously with the emitter of described 3rd triode, the negative pole of described first electric capacity, 8th pin of described first chip, second end of described second electric capacity, 4th pin of described second chip, the positive pole of described voltage stabilizing diode, 5th pin of described 3rd chip and the 6th pin, second end of described loudspeaker, the negative pole of described 6th electric capacity, 3rd pin of described 4th chip, the negative pole of described 7th electric capacity is connected with the 4th pin of described buck rectifier, the emitter of described second triode connects the base stage of described 3rd triode, the collector of described second triode simultaneously with the collector of described 3rd triode, second end of described 3rd resistance is connected with the second pin of described first chip, second end of described second resistance is connected with the first end of described 4th resistance and the first pin of described first chip simultaneously, second end of described 4th resistance is connected with the 6th pin of described first chip and the positive pole of the 5th pin and described first electric capacity simultaneously, 7th pin of described first chip connects the first end of described second electric capacity, 4th pin of described first chip connects the first end of described 5th resistance, second end of described 5th resistance connects the first pin of described second chip, second pin of described second chip connects the first end of described 6th resistance, second end of described 6th resistance simultaneously with the 3rd pin of described second chip, second end of described 7th resistance is connected with the negative pole of described voltage stabilizing diode, 5th pin of described second chip connects the first end of described 3rd electric capacity, second end of described 3rd electric capacity connects the first pin of described 3rd chip, 3rd pin of described 3rd chip and the 4th pin are connected with the first end of described 4th electric capacity and the second end respectively, 7th pin of described 3rd chip connects the first end of described 5th electric capacity, second end of described 5th electric capacity connects the first end of described loudspeaker, second pin of described 4th chip is connected with the positive pole of described 7th electric capacity and the 3rd pin of described buck rectifier simultaneously, first pin of described buck rectifier is connected with the described first end of the 8th electric capacity and the first end of described NTC thermistor simultaneously, second end of described 8th electric capacity is connected with the second end of described NTC thermistor and cathode voltage input end simultaneously, second pin of described buck rectifier connects cathode voltage input end.
2. a kind of device of overheating of electrical circuit for alarming according to claim 1, it is characterized in that: described first chip is the integrated chip of model NE555, described second chip is the simulation sounding integrated chip of model TM-801A, described 3rd chip is the audio frequency amplification chip of model LM-386, and described 4th chip is the three-terminal voltage-stabilizing integrated chip of model 7806.
3. a kind of device of overheating of electrical circuit for alarming according to claim 1, is characterized in that: described first electric capacity, described 6th electric capacity, described 7th electric capacity have been polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486016.3A CN104568179A (en) | 2013-10-16 | 2013-10-16 | Overheating alarm circuit for electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486016.3A CN104568179A (en) | 2013-10-16 | 2013-10-16 | Overheating alarm circuit for electrical equipment |
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| Publication Number | Publication Date |
|---|---|
| CN104568179A true CN104568179A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310486016.3A Pending CN104568179A (en) | 2013-10-16 | 2013-10-16 | Overheating alarm circuit for electrical equipment |
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| CN (1) | CN104568179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930863A (en) * | 2015-05-25 | 2015-09-23 | 成都中冶节能环保工程有限公司 | Alarm current-limiting type waste-heat power generation system based on submerged-arc furnace |
| CN104930861A (en) * | 2015-05-25 | 2015-09-23 | 成都中冶节能环保工程有限公司 | Alarm type afterheat power generation system based on submerged arc furnace |
-
2013
- 2013-10-16 CN CN201310486016.3A patent/CN104568179A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930863A (en) * | 2015-05-25 | 2015-09-23 | 成都中冶节能环保工程有限公司 | Alarm current-limiting type waste-heat power generation system based on submerged-arc furnace |
| CN104930861A (en) * | 2015-05-25 | 2015-09-23 | 成都中冶节能环保工程有限公司 | Alarm type afterheat power generation system based on submerged arc furnace |
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Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |