CN220367399U - Switch cabinet alarm circuit - Google Patents
Switch cabinet alarm circuit Download PDFInfo
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- CN220367399U CN220367399U CN202223042431.3U CN202223042431U CN220367399U CN 220367399 U CN220367399 U CN 220367399U CN 202223042431 U CN202223042431 U CN 202223042431U CN 220367399 U CN220367399 U CN 220367399U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
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Abstract
The utility model discloses a switch cabinet alarm circuit, which relates to the field of switch cabinets and comprises: a power supply module for supplying direct current; the electric leakage detection module is used for detecting whether the iron sheet at the outer side of the charged body is charged or not and outputting different voltage signals to the judgment control module according to whether the iron sheet is charged or not; the judging control module is used for controlling the driving alarm module to work when the iron sheet outside the charged body is charged; the driving alarm module is used for outputting PWM signals to drive the alarm module to work; the alarm module is used for alarming; the power supply module is connected with the electric leakage detection module and the driving alarm module, and compared with the prior art, the utility model has the beneficial effects that: the utility model shares an alarm circuit with all charged bodies, and the leakage detection circuit of each charged body has simple structure; and when the corresponding electrified body leaks electricity, the state of the on-off state of the luminous tube of the control module can be judged, and which electrified body leaks electricity, so that the circuit has fewer whole devices and simple structure.
Description
Technical Field
The utility model relates to the field of switch cabinets, in particular to a switch cabinet alarm circuit.
Background
In the overhaul of a 10KV or 35KV switch cabinet, 10KV or 35KV voltage is carried in the cabinet during the overhaul, and only a thin iron sheet is blocked outside the electrified body, so that certain potential safety hazards exist in the overhaul.
Because the switch cabinet supplies power for different areas, the electrified body is more, the area needed for detecting electric leakage is more, if each electrified body is adopted to be provided with an independent alarm circuit, the circuit is complicated, and therefore a concise alarm circuit is needed for carrying out electric leakage alarm on the switch cabinet.
Disclosure of Invention
The utility model aims to provide a switch cabinet alarm circuit for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a switchgear alarm circuit comprising:
a power supply module for supplying direct current;
the electric leakage detection module is used for detecting whether the iron sheet at the outer side of the charged body is charged or not and outputting different voltage signals to the judgment control module according to whether the iron sheet is charged or not;
the judging control module is used for controlling the driving alarm module to work when the iron sheet outside the charged body is charged;
the driving alarm module is used for outputting PWM signals to drive the alarm module to work;
the alarm module is used for alarming;
the power supply module is connected with the electric leakage detection module, the driving alarm module and the alarm module, the electric leakage detection module is connected with the judging control module, the judging control module is connected with the driving alarm module, and the driving alarm module is connected with the alarm module.
As still further aspects of the utility model: the leakage detection module comprises a plurality of leakage detection circuits, each leakage detection circuit is connected with a corresponding iron sheet on the outer side of the electrified body, each leakage detection circuit comprises a resistor R1, an optocoupler U1, a resistor R2 and a resistor R3, one end of the resistor R1 is connected with the first end of the optocoupler U1, the second end of the optocoupler U1 is grounded, the fourth end of the optocoupler U1 is grounded, the third end of the optocoupler U1 is connected with one end of the resistor R2, one end of the resistor R3 and the judging control module, the other end of the resistor R2 is grounded, and the other end of the resistor R3 is connected with the power supply module.
As still further aspects of the utility model: the judging control module comprises an AND gate Y1, an inverter Y2 and a plurality of signal circuits, wherein one end of each signal circuit is connected with the electric leakage detection module, the other end of each signal circuit is connected with the input end of the AND gate Y1, the output end of the AND gate Y1 is connected with the input end of the inverter Y2, and the output end of the inverter Y2 is connected with the driving alarm module;
each signal circuit corresponds to one leakage detection circuit, and each signal circuit comprises a diode D1, wherein the anode of the diode D1 is connected with the leakage detection circuit, and the cathode of the diode D1 is connected with the input end of the AND gate Y1.
As still further aspects of the utility model: the driving alarm module comprises a timer Y3, a resistor R4, a resistor R6, a capacitor C1, a capacitor C2 and a resistor R7, wherein the timer Y3 is 555, a pin 4 of the timer Y3 is connected with the power supply module, a pin 8 of the timer Y3 is connected with the judgment control module, a pin 1 of the timer Y3 is grounded, a pin 5 of the timer Y3 is grounded through the capacitor C2, a pin 7 of the timer Y3 is connected with one end of the resistor R4 and one end of the resistor R6, the other end of the resistor R4 is connected with the power supply module, the other end of the resistor R6 is connected with one end of the capacitor C1, a pin 2 of the timer Y3 and a pin 6 of the timer Y3, the other end of the capacitor C1 is grounded, a pin 3 of the timer Y3 is connected with one end of the resistor R7, and the other end of the resistor R7 is connected with the alarm module.
As still further aspects of the utility model: the alarm module comprises a resistor R5, a loudspeaker SPEAKER and a triode V1, wherein one end of the resistor R5 is connected with the power supply module, the other end of the resistor R5 is connected with one end of the loudspeaker SPEAKER, the other end of the loudspeaker SPEAKER is connected with a collector electrode of the triode V1, a base electrode of the triode V1 is connected with the driving alarm module, and an emitter electrode of the triode V1 is grounded.
Compared with the prior art, the utility model has the beneficial effects that: the utility model shares an alarm circuit with all charged bodies, and the leakage detection circuit of each charged body has simple structure; and when the corresponding electrified body leaks electricity, the state of the on-off state of the luminous tube of the control module can be judged, and which electrified body leaks electricity, so that the circuit has fewer whole devices and simple structure.
Drawings
Fig. 1 is a schematic diagram of a switchgear alarm circuit.
Fig. 2 is a circuit diagram of a switch cabinet alarm circuit.
Fig. 3 is a circuit diagram of the leakage detection module.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a switch cabinet alarm circuit includes:
a power supply module for supplying direct current;
the electric leakage detection module is used for detecting whether the iron sheet at the outer side of the charged body is charged or not and outputting different voltage signals to the judgment control module according to whether the iron sheet is charged or not;
the judging control module is used for controlling the driving alarm module to work when the iron sheet outside the charged body is charged;
the driving alarm module is used for outputting PWM signals to drive the alarm module to work;
the alarm module is used for alarming;
the power supply module is connected with the electric leakage detection module, the driving alarm module and the alarm module, the electric leakage detection module is connected with the judging control module, the judging control module is connected with the driving alarm module, and the driving alarm module is connected with the alarm module.
In this embodiment: referring to fig. 3, the leakage detection module includes a plurality of leakage detection circuits, each of which is connected to the corresponding iron sheet on the outer side of the charged body, the leakage detection circuits include a resistor R1, an optocoupler U1, a resistor R2, and a resistor R3, one end of the resistor R1 is connected to the first end of the optocoupler U1, the second end of the optocoupler U1 is grounded, the fourth end of the optocoupler U1 is grounded, the third end of the optocoupler U1 is connected to one end of the resistor R2, one end of the resistor R3, and the judgment control module, and the other end of the resistor R2 is grounded, and the other end of the resistor R3 is connected to the power supply module.
Judging whether a charged body is leaked or not by whether the charged body is electrified or not through the outer iron sheets X1 to XN of the charged body, taking the outer iron sheet X1 as an example, when the charged body is leaked correspondingly, the outer iron sheet X1 is electrified, the optocoupler U1 works through the resistor R1, the resistor R2 is connected with a phototriode in the optocoupler U1 in parallel, no current or small current exists on the resistor R2 due to the conduction of the phototriode, and at the moment, the signal VIN1 is in a low level and is output to a judging control module;
when the corresponding electrified body is not leaked, the outer iron sheet X1 is not electrified, the optocoupler U1 does not work, the phototriode inside the optocoupler U1 does not work, the output voltage of the power supply module is grounded through the resistor R3 and the resistor R2, and at the moment, the voltage (the signal VIN 1) on the resistor R2 is high level and is output to the judging control module.
In this embodiment: referring to fig. 2, the judgment control module includes an and gate Y1, an inverter Y2, and a plurality of signal circuits, one end of each signal circuit is connected to the leakage detection module, the other end of each signal circuit is connected to the input end of the and gate Y1, the output end of the and gate Y1 is connected to the input end of the inverter Y2, and the output end of the inverter Y2 is connected to the driving alarm module;
each signal circuit corresponds to one leakage detection circuit, and each signal circuit comprises a diode D1, wherein the anode of the diode D1 is connected with the leakage detection circuit, and the cathode of the diode D1 is connected with the input end of the AND gate Y1.
The corresponding signal circuit outputs low level to the AND gate Y1 corresponding to the leakage of the charged body, at the moment, the corresponding light emitting diodes do not emit light (D1 to DN) to indicate the leakage of the charged body, at the moment, the input end of the AND gate Y1 is not high level, so the AND gate Y1 outputs low level, and outputs high level after passing through the phase inverter Y2 to control the driving alarm module to work.
All charged bodies are not leaked, all signal circuits output high level, the AND gate Y1 outputs high level, the inverter Y2 outputs low level, and the alarm module is not driven to work.
In this embodiment: referring to fig. 2, the driving alarm module includes a timer Y3, a resistor R4, a resistor R6, a capacitor C1, a capacitor C2, and a resistor R7, where the timer Y3 is a 555 timer, a pin 4 of the timer Y3 is connected to the power supply module, a pin 8 of the timer Y3 is connected to the judgment control module, a pin 1 of the timer Y3 is grounded, a pin 5 of the timer Y3 is grounded through the capacitor C2, a pin 7 of the timer Y3 is connected to one end of the resistor R4 and one end of the resistor R6, the other end of the resistor R4 is connected to the power supply module, the other end of the resistor R6 is connected to one end of the capacitor C1, a pin 2 of the timer Y3 and a pin 6 of the timer Y3 are grounded, a pin 3 of the timer Y3 is connected to one end of the resistor R7, and the other end of the resistor R7 is connected to the alarm module.
When the No. 8 pin has voltage input, the timer Y3 is electrified to work, the capacitor C1 enables the voltage on the No. 2 pin and the No. 6 pin of the timer Y3 to change through charging and discharging (the resistor R4 and the resistor R6 are used for charging and the No. 7 pin of the timer Y3 is used for discharging), the No. 3 pin of the timer Y3 outputs PWM signals (555 timer characteristics), and the alarm module is driven to work.
In this embodiment: referring to fig. 2, the alarm module includes a resistor R5, a SPEAKER, and a triode V1, wherein one end of the resistor R5 is connected to the power supply module, the other end of the resistor R5 is connected to one end of the SPEAKER, the other end of the SPEAKER is connected to a collector of the triode V1, a base of the triode V1 is connected to the driving alarm module, and an emitter of the triode V1 is grounded.
When the driving alarm module outputs a PWM signal, the triode V1 is conducted according to the PWM frequency, so that the loudspeaker SPEAKER sounds to alarm.
The working principle of the utility model is as follows: the power supply module supplies direct current, the electric leakage detection module detects whether the iron sheet on the outer side of the electrified body is electrified, and outputs different voltage signals to the judgment control module according to whether the iron sheet on the outer side of the electrified body is electrified, when the iron sheet on the outer side of the electrified body of the judgment control module is electrified, the drive alarm module is controlled to work, the drive alarm module outputs PWM signals to drive the alarm module to work, and the alarm module sounds to alarm.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A switch cabinet alarm circuit is characterized in that:
the switch cabinet alarm circuit comprises:
a power supply module for supplying direct current;
the electric leakage detection module is used for detecting whether the iron sheet at the outer side of the charged body is charged or not and outputting different voltage signals to the judgment control module according to whether the iron sheet is charged or not;
the judging control module is used for controlling the driving alarm module to work when the iron sheet outside the charged body is charged;
the driving alarm module is used for outputting PWM signals to drive the alarm module to work;
the alarm module is used for alarming;
the power supply module is connected with the electric leakage detection module, the driving alarm module and the alarm module, the electric leakage detection module is connected with the judging control module, the judging control module is connected with the driving alarm module, and the driving alarm module is connected with the alarm module.
2. The switch cabinet alarm circuit according to claim 1, wherein the leakage detection module comprises a plurality of leakage detection circuits, each of which is connected with the corresponding iron sheet on the outer side of the live body, the leakage detection circuits comprise a resistor R1, an optocoupler U1, a resistor R2 and a resistor R3, one end of the resistor R1 is connected with the first end of the optocoupler U1, the second end of the optocoupler U1 is grounded, the fourth end of the optocoupler U1 is grounded, the third end of the optocoupler U1 is connected with one end of the resistor R2, one end of the resistor R3 and the judgment control module, the other end of the resistor R2 is grounded, and the other end of the resistor R3 is connected with the power supply module.
3. The switch cabinet alarm circuit according to claim 2, wherein the judgment control module comprises an and gate Y1, an inverter Y2 and a plurality of signal circuits, one end of each signal circuit is connected with the electric leakage detection module, the other end of each signal circuit is connected with the input end of the and gate Y1, the output end of the and gate Y1 is connected with the input end of the inverter Y2, and the output end of the inverter Y2 is connected with the driving alarm module;
each signal circuit corresponds to one leakage detection circuit, and each signal circuit comprises a diode D1, wherein the anode of the diode D1 is connected with the leakage detection circuit, and the cathode of the diode D1 is connected with the input end of the AND gate Y1.
4. The switch cabinet alarm circuit according to claim 1, wherein the driving alarm module comprises a timer Y3, a resistor R4, a resistor R6, a capacitor C1, a capacitor C2 and a resistor R7, the timer Y3 is 555, a pin 4 of the timer Y3 is connected with the power supply module, a pin 8 of the timer Y3 is connected with the judging control module, a pin 1 of the timer Y3 is grounded, a pin 5 of the timer Y3 is grounded through the capacitor C2, a pin 7 of the timer Y3 is connected with one end of the resistor R4 and one end of the resistor R6, the other end of the resistor R4 is connected with the power supply module, the other end of the resistor R6 is connected with one end of the capacitor C1, a pin 2 of the timer Y3 and a pin 6 of the timer Y3 are grounded, a pin 3 of the timer Y3 is connected with one end of the resistor R7, and the other end of the resistor R7 is connected with the alarm module.
5. The switch cabinet alarm circuit according to claim 1, wherein the alarm module comprises a resistor R5, a SPEAKER, and a triode V1, one end of the resistor R5 is connected to the power supply module, the other end of the resistor R5 is connected to one end of the SPEAKER, the other end of the SPEAKER is connected to a collector of the triode V1, a base of the triode V1 is connected to the driving alarm module, and an emitter of the triode V1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223042431.3U CN220367399U (en) | 2022-11-16 | 2022-11-16 | Switch cabinet alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223042431.3U CN220367399U (en) | 2022-11-16 | 2022-11-16 | Switch cabinet alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220367399U true CN220367399U (en) | 2024-01-19 |
Family
ID=89513586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223042431.3U Active CN220367399U (en) | 2022-11-16 | 2022-11-16 | Switch cabinet alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220367399U (en) |
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2022
- 2022-11-16 CN CN202223042431.3U patent/CN220367399U/en active Active
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