CN103728036A - Bus temperature rise detection device with double-warning function - Google Patents
Bus temperature rise detection device with double-warning function Download PDFInfo
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- CN103728036A CN103728036A CN201310568224.8A CN201310568224A CN103728036A CN 103728036 A CN103728036 A CN 103728036A CN 201310568224 A CN201310568224 A CN 201310568224A CN 103728036 A CN103728036 A CN 103728036A
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Abstract
The invention discloses a bus temperature rise detection device with a double-warning function. The bus temperature rise detection device comprises a temperature sensor and a comparison circuit connected to the temperature sensor, the output end of the comparison circuit is sequentially connected with a power amplifying circuit and a second warning device, a comparator is further connected with a first warning device which is an LED lamp, and the comparison circuit is further provided with a warning temperature adjusting device. The bus temperature rise detection device has the advantages that the circuit structure is simple, cost is low, the application range is wide, the double-warning function is achieved, and potential hazards caused by excessive bus temperature rise is avoided.
Description
Technical field
The present invention relates to switch cabinet bus temperature rise detecting device, relate in particular a kind of bus temperature rise detecting device with dual alarm function.
Background technology
Switch cubicle is a kind of electric equipment, and outside line is introduced into master switch in cabinet, then enters sub-control switch, and each needs to arrange by it along separate routes.Nowadays the switch cubicle of high load capacity operation use in electrical network.And the over-heat inside phenomenon of switch cubicle has become the monitored FAQs of switch cubicle.Especially in high voltage bus, due to the intersection of busbar joint, make the heating especially severe of joint location, superheating phenomenon easily causes circuit corrosion.And the corrosion of bus has a strong impact on generation to the operation of switch cubicle.When in to switch cubicle, bus temperature detects, existing technology generally adopts microcontroller and some peripheral circuits to realize, and not only circuit structure is complicated for it, and cost is higher.
Summary of the invention
The invention provides a kind of bus temperature rise detecting device with dual alarm function, not only circuit structure is simple for it, and cost is low, applied widely, and has dual alarm function, prevents that bus from excessively heating up and bringing hidden danger.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
The bus temperature rise detecting device with dual alarm function, it comprises temperature sensor and is connected to the comparator circuit on temperature sensor, on the output terminal of described comparator circuit, be connected with power amplification circuit and the second alarm device in turn, on described comparer, be also connected with the first alarm device, the first described alarm device is LED lamp, is also provided with alarm temperature regulating device on described comparator circuit.
Further technical scheme is:
As preferably, described alarm temperature regulating device is variable resistor R2.
Further, described comparator circuit comprises variable resistor R2, resistance R 1, resistance R 3, resistance R 4 and comparer, described variable resistor R2, resistance R 3 and resistance R 4 are connected successively, and the non-common port of variable resistor R2 is connected on power supply, the non-common end grounding of resistance R 4; Described resistance R 3 and the common port of resistance R 4 are connected on the inverting input of comparer; Described resistance R 1 is connected between the in-phase input end and temperature sensor of comparer.
As preferably, described resistance R 3 and the resistance value ratio of resistance R 4 are less than 1:4.
As preferably, the second described alarm device is loudspeaker or hummer.
Compared with prior art, the invention has the beneficial effects as follows:
1, the microcontroller that do not adopt of the present invention is controlled, and directly adopts comparer to judge temperature rise, and its circuit structure is simple, and low cost of manufacture is convenient to extensive use.
2, comparator circuit of the present invention is provided with alarm temperature regulating device, and its alarm temperature regulating device can regulate alarm temperature according to natural temperature, makes it not be subject to the impact of natural temperature, and it is applied widely.
3, of the present invention have a dual alarm function, when temperature rise is too high to people to remind, avoid the too high hidden danger of bringing of bus temperature rise, be convenient to people and process in time hidden danger.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the circuit diagram of comparator circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Embodiments of the present invention include but not limited to the following example.
[embodiment]
The bus temperature rise detecting device with dual alarm function as depicted in figs. 1 and 2, it comprises temperature sensor and is connected to the comparator circuit on temperature sensor, on the output terminal of described comparator circuit, be connected with power amplification circuit and the second alarm device in turn, on described comparer, be also connected with the first alarm device, the first described alarm device is LED lamp, is also provided with alarm temperature regulating device on described comparator circuit.Temperature rise refers to that each parts in equipment exceed the temperature of environment.In the present invention, utilize temperature sensor to detect the temperature of bus, utilize comparator circuit to contrast the temperature detecting and the temperature of early warning, when temperature rise is greater than certain value, when the temperature detecting is greater than early warning value, a magnitude of voltage of comparator circuit output, this magnitude of voltage can directly drive the first alarm device to give warning; The magnitude of voltage of comparer output amplifies to drive the second follow-up alarm device through power amplification circuit, the second alarm device give again warning, reach the object of alarm.The first alarm device and the second alarm device carry out alarm in different ways.The first alarm device reaches the object of alarm by the flicker of LED lamp.Because the factors such as natural temperature and height above sea level, season, environment are closely bound up, alarm temperature regulating device is set on comparator circuit, can regulate alarm temperature according to environment temperature, reach the object of suiting measures to local conditions.
For the ease of regulating, described alarm temperature regulating device is variable resistor R2.By regulating variable resistor R2 to come to change alarm temperature according to natural temperature, and variable resistor R2 is convenient to regulate.
Described comparator circuit comprises variable resistor R2, resistance R 1, resistance R 3, resistance R 4 and comparer, and described variable resistor R2, resistance R 3 and resistance R 4 are connected successively, and the non-common port of variable resistor R2 is connected on power supply, the non-common end grounding of resistance R 4; Described resistance R 3 and the common port of resistance R 4 are connected on the inverting input of comparer; Described resistance R 1 is connected between the in-phase input end and temperature sensor of comparer.
Utilize voltage divider principle to produce the reference voltage of comparer, because one end of variable resistor R2 is connected with power supply, for fear of when regulating variable resistor R2, produce the situation of zero resistance, contact resistance R3 on variable resistor, avoids overtension to damage the reversed-phase output of comparer.When the voltage of temperature sensor output is higher, when the electric current of the in-phase input end of comparer is excessive, easily comparer is damaged 1 metering function of resistance R.
Large, applied widely in order to make this install applicable natural temperature scope, described resistance R 3 and the resistance value ratio of resistance R 4 are less than 1:4.When regulating the resistance of variable resistor R2 to be zero, it is the highest that this installs applicable natural temperature, and the voltage of the inverting input of comparer is the highest; Constantly increase the resistance of variable resistor R2, the voltage of the inverting input of comparer is more and more lower, and now, it is applicable to the environment that natural temperature is lower.The effect of resistance R 3 is the states that prevent variable resistor R2 zero resistance, and it should be not excessive, if resistance R 3 is excessive, the applicable environmental field of this circuit will diminish, and to sum up, the resistance value ratio of resistance R 3 and resistance R 4 is less than 1:4.
The second described alarm device is loudspeaker or hummer.Loudspeaker or hummer by sound to people with warning, warning function is stronger.
Be as mentioned above embodiments of the invention.The present invention is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (5)
1. the bus temperature rise detecting device with dual alarm function, it is characterized in that: it comprises temperature sensor and is connected to the comparator circuit on temperature sensor, on the output terminal of described comparator circuit, be connected with power amplification circuit and the second alarm device in turn, on described comparer, be also connected with the first alarm device, the first described alarm device is LED lamp, is also provided with alarm temperature regulating device on described comparator circuit.
2. the bus temperature rise detecting device with dual alarm function according to claim 1, is characterized in that: described alarm temperature regulating device is variable resistor R2.
3. the bus temperature rise detecting device with dual alarm function according to claim 1 and 2, it is characterized in that: described comparator circuit comprises variable resistor R2, resistance R 1, resistance R 3, resistance R 4 and comparer, described variable resistor R2, resistance R 3 and resistance R 4 are connected successively, the non-common port of variable resistor R2 is connected on power supply, the non-common end grounding of resistance R 4; Described resistance R 3 and the common port of resistance R 4 are connected on the inverting input of comparer; Described resistance R 1 is connected between the in-phase input end and temperature sensor of comparer.
4. the bus temperature rise detecting device with dual alarm function according to claim 1, is characterized in that: described resistance R 3 and the resistance value ratio of resistance R 4 are less than 1:4.
5. the bus temperature rise detecting device with dual alarm function according to claim 1, is characterized in that: the second described alarm device is loudspeaker or hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310568224.8A CN103728036A (en) | 2013-11-15 | 2013-11-15 | Bus temperature rise detection device with double-warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310568224.8A CN103728036A (en) | 2013-11-15 | 2013-11-15 | Bus temperature rise detection device with double-warning function |
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| Publication Number | Publication Date |
|---|---|
| CN103728036A true CN103728036A (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310568224.8A Pending CN103728036A (en) | 2013-11-15 | 2013-11-15 | Bus temperature rise detection device with double-warning function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241564A (en) * | 2015-11-12 | 2016-01-13 | 江苏威腾母线有限公司 | Bus temperature grading warning device |
| CN106532326A (en) * | 2016-09-20 | 2017-03-22 | 深圳市九洲电器有限公司 | HDMI cable protection system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2552008Y (en) * | 2002-01-21 | 2003-05-21 | 丰叶电器制造厂有限公司 | Alarm |
| CN202693700U (en) * | 2012-06-18 | 2013-01-23 | 四川中浩控制技术有限公司 | Wireless monitoring and anti-theft device for transformer |
| CN202928700U (en) * | 2012-10-31 | 2013-05-08 | 广州亚虎电力有限公司 | High voltage bus temperature monitoring device |
-
2013
- 2013-11-15 CN CN201310568224.8A patent/CN103728036A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2552008Y (en) * | 2002-01-21 | 2003-05-21 | 丰叶电器制造厂有限公司 | Alarm |
| CN202693700U (en) * | 2012-06-18 | 2013-01-23 | 四川中浩控制技术有限公司 | Wireless monitoring and anti-theft device for transformer |
| CN202928700U (en) * | 2012-10-31 | 2013-05-08 | 广州亚虎电力有限公司 | High voltage bus temperature monitoring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241564A (en) * | 2015-11-12 | 2016-01-13 | 江苏威腾母线有限公司 | Bus temperature grading warning device |
| CN106532326A (en) * | 2016-09-20 | 2017-03-22 | 深圳市九洲电器有限公司 | HDMI cable protection system and method |
| CN106532326B (en) * | 2016-09-20 | 2019-02-15 | 深圳市九洲电器有限公司 | A kind of HDMI cable protection system and method |
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Application publication date: 20140416 |