CN205229372U - A grounding detection acousto -optic warning module - Google Patents
A grounding detection acousto -optic warning module Download PDFInfo
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- CN205229372U CN205229372U CN201521107091.5U CN201521107091U CN205229372U CN 205229372 U CN205229372 U CN 205229372U CN 201521107091 U CN201521107091 U CN 201521107091U CN 205229372 U CN205229372 U CN 205229372U
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Abstract
The utility model discloses a grounding detection acousto -optic warning module, enlarge driving part, height level output part, buzzer warning part and LED warning part including main mains operated part, ground resistance test section, comparison, the utility model discloses detect the voltage at ground resistance both ends, accomplish the judgement to grounding effects, realize that imperfect earth's level is reported to the police and acousto -optic warning output, have high reliability, high stability, stronger interference killing feature, circuit is succinct, application scope is wide and characteristics such as warning form pluralism.
Description
Technical field
The utility model relates to a earthing detection sound and light alarm module, and this control module is mainly used in power-supply system grounded inspection circuit.
Background technology
In recent years, due to more and more harsher to the testing requirement of earthing effect in electronic system, the requirement of warning function is more and more diversified, need more effective warning measure more directly perceived, thus increasing field requires to be equipped with earthing detection alarm instruction, must be directly perceived to warning instruction, and possess the long-term high reliability, high stability and the stronger antijamming capability that detect.On the other hand, traditional grounded inspection circuit majority adopts the mimic channel of a large amount of discrete device compositions, and circuit structure is complicated, and reliability is low, and function is disperseed, and indicates single.Traditional detection mode more and more can not meet the requirement of Modernization System to earthing detection alarm.
The beneficial effects of the utility model solve circuit structure complexity in classic method, and reliability is low, and function is disperseed, and the first-class shortcoming of instruction sheet, effectively improves diversification and the reliability of earthing detection alarm.
Utility model content
It is a kind of for the imperfect earth warning circuit module in power-supply system grounded inspection circuit that the utility model designs to solve the problems of the technologies described above just, and this module is mainly used in power-supply system earthing detection alarm circuit.
The utility model solves the technical scheme that its technical matters adopts:
A earthing detection sound and light alarm module, this module application is in the grounded inspection circuit of power-supply system, comprise primary power power pack, insulating resistance measuring part, compare and amplify drive part, low and high level output, buzzer warning part and LED alarm portion, described primary power power pack mainly provides the supply voltage of warning output voltage and operational amplifier and hummer supply voltage; Described insulating resistance measuring part is connected sample resistance over the ground, by detecting the voltage at resistance two ends, completes the judgement to earthing effect; Describedly compare that to amplify drive part effect be that detection voltage is exported high level by operational amplifier more afterwards with reference voltage; The effect of described low and high level output is that the high level that operational amplifier exports drives triode, makes master control triode be converted to conducting state by cut-off state, exports low and high level indicating status after connection in series-parallel protection diode; After described buzzer warning part is compared with reference voltage by the level state that detection alarm exports, operational amplifier exports this level and drives triode and then conducting buzzer warning to export; Described LED alarm portion receives the operational amplifier signal driving LED driving buzzer warning.
Detecting the voltage of stake resistance, by driving triode through operational amplifier more afterwards with reference voltage, opening the detection voltage of conducting, the voltage driven buzzer warning simultaneously exported according to conversion exports and LED lamplight is reported to the police exports.
In sum, the utility model detects the voltage at stake resistance two ends, completes the judgement to earthing effect, is grounded bad level and reports to the police and sound and light alarm output, have following characteristics:
function admirable, effectively improves reliability;
The shortcoming that the utility model exists for classic method, has carried out brand-new design and perfect.Thus effectively avoid circuit structure complicated, the shortcomings such as stability is low, effectively improve accuracy of detection and reliability.
simple circuit, working stability, accuracy of detection is high;
The utility model circuit form is simple, and number of devices used contrasts traditional mimic channel and greatly reduces, and only need carry out assembling according to schematic diagram can meet request for utilization, and this circuit has higher Ability of Resisting Disturbance simultaneously, work that still can be stable.
applied widely, alarm form diversification;
The utility model, has earthing detection function, imperfect earth level output alarm function, hummer sound alarm function and LED lamplight warning function, and prevailing operating state, not by the impact of environment, has widened the occasion of its application greatly.
Accompanying drawing explanation
Fig. 1 is earthing detection sound light alarming circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A earthing detection sound and light alarm module, comprise primary power power pack, insulating resistance measuring part, compare and amplify drive part, low and high level output, buzzer warning part and LED alarm portion, described primary power power pack mainly provides the supply voltage of warning output voltage and operational amplifier and hummer supply voltage; Described insulating resistance measuring part is connected sample resistance over the ground, by detecting the voltage at resistance two ends, completes the judgement to earthing effect; Describedly compare that to amplify drive part effect be that detection voltage is exported high level by operational amplifier more afterwards with reference voltage; The effect of described low and high level output is that the high level that operational amplifier exports drives triode, makes master control triode be converted to conducting state by cut-off state, exports low and high level indicating status after connection in series-parallel protection diode; After described buzzer warning part is compared with reference voltage by the level state that detection alarm exports, operational amplifier exports this level and drives triode and then conducting buzzer warning to export; Described LED alarm portion receives the operational amplifier signal driving LED driving buzzer warning.
Detecting the voltage of stake resistance, by driving triode through operational amplifier more afterwards with reference voltage, opening the detection voltage of conducting, the voltage driven buzzer warning simultaneously exported according to conversion exports and LED lamplight is reported to the police exports.
As shown in Figure 1, T1, T2 are isolating transformer, are system required voltage grade by mains isolation step-down.BD1, BD2 are that alternating current is converted to direct current by rectifier bridge.C1, C2, C3, C4, mainly play filter action for electrochemical capacitor.IC1, IC2 are integrated voltage-stabilized chip, provide stable DC electric pressure.Resistance R5, R6 are the sample resistance of ground connection, the precision resistance that this resistance selection temperature drift coefficient is little, stability is high.Resistance can be adjusted according to actual conditions.Diode D3 is protection diode.Operational amplifier U1 selects double operational device, and U1-A is grounded the judgement of effect and the driving of switching tube Q1.U1-B realizes the driving of hummer and the instruction of LED as comparer.S triode Q1 is the switching tube of the conducting of output detections level and cut-off.Diode D1 and D2 is the protection diode of output detections level, makes to detect output level and better adapts to different application load.BELL-1 is the hummer of audible alarm.LED1 is the light emitting diode of light warning.
The utility model not only can be applied in power-supply system grounded inspection circuit, also can be applied to other electronic system and household electrical appliances, in the circuit such as Industry Control through suitable adjustment.
The utility model patent is not limited to above-mentioned preferred forms, anyone other any or akin products identical with the utility model drawn under enlightenment of the present utility model, all drops within protection domain of the present utility model.
Claims (2)
1. a earthing detection sound and light alarm module, it is characterized in that: comprise primary power power pack, insulating resistance measuring part, compare and amplify drive part, low and high level output, buzzer warning part and LED alarm portion, described primary power power pack mainly provides the supply voltage of warning output voltage and operational amplifier and hummer supply voltage; Described insulating resistance measuring part is connected sample resistance over the ground, by detecting the voltage at resistance two ends, completes the judgement to earthing effect; Describedly compare that to amplify drive part effect be that detection voltage is exported high level by operational amplifier more afterwards with reference voltage; The effect of described low and high level output is that the high level that operational amplifier exports drives triode, makes master control triode be converted to conducting state by cut-off state, exports low and high level indicating status after connection in series-parallel protection diode; After described buzzer warning part is compared with reference voltage by the level state that detection alarm exports, operational amplifier exports this level and drives triode and then conducting buzzer warning to export; Described LED alarm portion receives the operational amplifier signal driving LED driving buzzer warning.
2. a earthing detection sound and light alarm module according to claim 1, it is characterized in that: the voltage detecting stake resistance, by driving triode through operational amplifier more afterwards with reference voltage, open the detection voltage of conducting, the voltage driven buzzer warning simultaneously exported according to conversion exports and LED lamplight is reported to the police exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107091.5U CN205229372U (en) | 2015-12-28 | 2015-12-28 | A grounding detection acousto -optic warning module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107091.5U CN205229372U (en) | 2015-12-28 | 2015-12-28 | A grounding detection acousto -optic warning module |
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| Publication Number | Publication Date |
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| CN205229372U true CN205229372U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521107091.5U Active CN205229372U (en) | 2015-12-28 | 2015-12-28 | A grounding detection acousto -optic warning module |
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| CN (1) | CN205229372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717367A (en) * | 2016-04-13 | 2016-06-29 | 国网新疆电力公司阿克苏供电公司 | Grounding device resistor monitor for preventing humans and animals from electric shock |
-
2015
- 2015-12-28 CN CN201521107091.5U patent/CN205229372U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717367A (en) * | 2016-04-13 | 2016-06-29 | 国网新疆电力公司阿克苏供电公司 | Grounding device resistor monitor for preventing humans and animals from electric shock |
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