CN219247463U - Residual current protector with residual current magnitude indicating function - Google Patents
Residual current protector with residual current magnitude indicating function Download PDFInfo
- Publication number
- CN219247463U CN219247463U CN202223162609.8U CN202223162609U CN219247463U CN 219247463 U CN219247463 U CN 219247463U CN 202223162609 U CN202223162609 U CN 202223162609U CN 219247463 U CN219247463 U CN 219247463U
- Authority
- CN
- China
- Prior art keywords
- residual current
- pin
- leakage detection
- protector
- lamp group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a residual current protector with a residual current magnitude indicating function, which comprises: the residual current collection circuit is used for collecting leakage signals in a circuit, a leakage detection chip U1 is arranged in the residual current collection circuit, and the leakage detection chip U1 is provided with an amplifying output pin; the single-chip microcomputer U2 is provided with an AD sampling pin, and the single-chip microcomputer U2 is used for comparing a current leakage value with a preset tripping threshold value; the display device comprises an indication lamp set, a display device and a display device, wherein the indication lamp set comprises at least 1 light emitting diode; the singlechip U2 is connected with an amplified output pin of the leakage detection chip U1 through an AD sampling pin and indicates the lamp group to indicate the current residual current, and the singlechip U2 and the leakage detection chip U1 share a power supply. The beneficial effects of the utility model are as follows: the indication lamp group is controlled to indicate, so that the current residual current is clearly displayed, and a user is reminded to intervene in advance to operate.
Description
Technical Field
The utility model relates to the technical field of residual current protectors, in particular to a residual current protector with a residual current magnitude indicating function.
Background
The installation of a residual current operated protector (residual current protector for short) in a low-voltage power grid is an effective protective measure for preventing personal electric shock, electric fire and damage to electrical equipment. The existing residual current protector is generally provided with no indicator lamp, and the circuit with the indicator lamp is quite complex and is realized by discrete components, so that the circuit board is large in size.
The Chinese patent 2021204597093 discloses a residual current operated circuit breaker with a residual current indication function, which comprises a residual current transformer, a power supply circuit, a residual current signal acquisition processing circuit, a tripping circuit, an indication circuit, a residual current test circuit and a residual current test winding, wherein the residual current transformer is connected with a main loop power line, a secondary winding of the residual current transformer is used as a residual current detection winding to be electrically connected with the residual current signal acquisition processing circuit, the residual current transformer is connected with the residual current test circuit through the residual current test winding, the residual current test circuit is electrically connected with a main loop power line, the residual current signal acquisition circuit is electrically connected with the tripping circuit and the indication circuit, the tripping circuit is electrically connected with the main loop power line, and the power supply circuit is electrically connected with the main loop power line and is used for supplying power to the residual current signal acquisition circuit and the tripping circuit; the indicating circuit comprises capacitors C7-C9, resistors R4-R6 and a three-color light emitting diode LED, wherein the first end of the resistor R4, the first end of the resistor R5 and the first end of the resistor R6 are electrically connected with the residual current signal acquisition and processing circuit, the second end of the resistor R4 is electrically connected with the first end of the capacitor C7 and the first anode of the three-color light emitting diode LED, the second end of the resistor R5 is electrically connected with the first end of the capacitor C8 and the second anode of the three-color light emitting diode LED, the second end of the resistor R6 is electrically connected with the first end of the capacitor C9 and the third anode of the three-color light emitting diode LED, and the second end of the capacitor C7, the second end of the capacitor C8 and the cathode supply of the three-color light emitting diode LED are all grounded.
The above patent realizes the processing of the collected residual current signal through the special chip LW601, when the residual current reaches the set tripping threshold, the residual current signal collecting and processing circuit outputs a trigger pulse signal, the tripping circuit can be triggered to be conducted, the tripping of the residual current action breaker is further controlled, when the residual current does not reach the set tripping threshold, the indication can be carried out through the indication circuit, the user can intervene in advance according to the indication, and the data loss, equipment damage and the like caused by sudden power failure are prevented; however, the dedicated chip LW601 has high cost, and the trip threshold cannot be set according to different use environments, so that only the corresponding dedicated chip can be replaced when the trip threshold needs to be adjusted, which increases the use cost.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a residual current protector with a residual current magnitude indicating function so as to solve the problems.
The technical scheme of the utility model is realized as follows: a residual current protector with a residual current level indication function, comprising:
the residual current collection circuit is used for collecting leakage signals in a circuit, a leakage detection chip U1 is arranged in the residual current collection circuit, and the leakage detection chip U1 is provided with an amplifying output pin;
the single-chip microcomputer U2 is provided with an AD sampling pin, and the single-chip microcomputer U2 is used for comparing a current leakage value with a preset tripping threshold value;
the display device comprises an indication lamp set, a display device and a display device, wherein the indication lamp set comprises at least 1 light emitting diode;
the singlechip U2 is connected with an amplified output pin of the leakage detection chip U1 through an AD sampling pin and indicates the lamp group to indicate the current residual current, and the singlechip U2 and the leakage detection chip U1 share a power supply.
The utility model is further provided with: the power input pin of singlechip U2 connects power VCC, the AD sampling pin of singlechip U2 connects the amplification output pin of electric leakage detection chip U1, singlechip U2's ground pin ground connection.
The utility model is further provided with: the indicator light group can indicate the residual current by the flicker frequency.
The utility model is further provided with: the indicating lamp group can indicate the residual current through the flashing times.
The utility model is further provided with: the indicating lamp group may indicate the magnitude of the residual current by color.
The utility model is further provided with: the indicating lamp group at least comprises 2 light emitting diodes, and the residual current is sequentially indicated from small to large through green and red.
The utility model is further provided with: the indicating lamp group at least comprises 3 light emitting diodes, and the residual current is sequentially indicated from small to large through yellow, green and red.
Compared with the prior art, the utility model has the beneficial effects that: the residual current collection circuit only needs to be provided with an amplifying output pin, the singlechip samples the waveform of the amplifying output pin of the residual current collection circuit through an AD pin, calculates the proportion relation between the current leakage value and the tripping threshold through an algorithm in the singlechip, then control the pilot lamp group and instruct to the current residual current's of clear demonstration size reminds the user to intervene in advance and operate, prevents abrupt tripping operation, outage, and electric leakage tripping threshold value accessible singlechip adjusts moreover, makes its use more nimble, and the cost is also lower.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a circuit diagram of an embodiment of the present utility model.
Fig. 2 is a circuit diagram of a specific embodiment of the present utility model using 2 lamps.
Fig. 3 is a second circuit diagram of the embodiment of the present utility model using 2 lamps.
FIG. 4 shows an embodiment of the present utility model circuit diagram three when 2 lamps are used.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the present utility model discloses a residual current protector with a residual current level indicating function, comprising:
the residual current collection circuit 1 is used for collecting leakage signals in a line, a leakage detection chip U1 is arranged in the residual current collection circuit 1, and the leakage detection chip U1 is provided with an amplifying output pin;
the single-chip microcomputer U2 is provided with an AD sampling pin, and the single-chip microcomputer U2 is used for comparing a current leakage value with a preset tripping threshold value;
an indicator light set 2, the indicator light set 2 comprising at least 1 light emitting diode;
the singlechip U2 is connected with an amplifying output pin of the leakage detection chip U1 through an AD sampling pin and indicates the lamp group 2 to indicate the current residual current, and the singlechip U2 and the leakage detection chip U1 share a power supply; when the indicator lamp group 2 is a light-emitting diode, the cathode of the light-emitting diode is grounded, and the anode of the light-emitting diode is connected with the No. 2 pin of the singlechip U2 through a resistor.
In the embodiment of the utility model, a power input pin of the singlechip U2 is connected with a power VCC, an AD sampling pin of the singlechip U2 is connected with an amplifying output pin of the leakage detection chip U1, and a grounding pin of the singlechip U2 is grounded.
In the embodiment of the present utility model, the indicator lamp set 2 can indicate the residual current by the flicker frequency
In the embodiment of the present utility model, the indicator light set 2 may indicate the magnitude of the residual current through the number of blinking; such as single flash, double flash, triple flash to characterize the residual current magnitude.
In the embodiment of the present utility model, the indicator light set 2 may indicate the residual current level by color.
In the embodiment of the present utility model, the indicator light set 2 includes at least 2 leds, and indicates the residual current from small to large sequentially through green and red; the current residual current is indicated by independently lighting green lamps or red lamps, and the effect of the yellow lamps can be displayed by lighting the green lamps and the red lamps simultaneously, so that the effect of 3 colors is realized through 2 lamps, and the indication is clearer and more convenient.
In the embodiment of the present utility model, the indicator light set 2 includes at least 3 leds, and indicates the residual current from small to large sequentially through yellow, green, and red.
When the indicator lamp group 2 is 3 light emitting diodes, the indicator lamp group comprises a light emitting diode D4, a light emitting diode D5 and a light emitting diode D6, wherein anodes of the light emitting diode D4, the light emitting diode D5 and the light emitting diode D6 are respectively connected with a No. 2 pin, a No. 6 pin and a No. 4 pin of the singlechip through a resistor R7, a resistor R8 and a resistor R9, and cathodes of the light emitting diode D4, the light emitting diode D5 and the light emitting diode D6 are grounded.
By adopting the technical scheme: the residual current collection circuit comprises a residual current collection circuit, a single chip microcomputer, an AD pin, an indication lamp group, a tripping threshold, an indication lamp group and a voltage regulator, wherein the residual current collection circuit is provided with an amplifying output pin; the residual current level may be indicated by setting the flicker frequency level when there are 1 lamp, and may be indicated by setting the flicker frequency level or the color of 2 lamps when there are 2 or more lamps.
As shown in fig. 2, when the indicator light set 2 includes 2 leds, the indicator light set includes an led D4 and an led D5, anodes of the led D4 and the led D5 are connected to pins No. 2 and No. 6 of the singlechip through a resistor R7 and a resistor R8, and cathodes of the led D4 and the led D5 are grounded.
As shown in fig. 3, when the indicator lamp set 2 includes 2 leds, the indicator lamp set includes an led D4 and an led D5, the positive electrode of the led D4 is connected to the negative electrode of the led D5 through a resistor R7, the positive electrode of the led D5 is connected to the negative electrode of the led D4 through a resistor R8, the negative electrode of the led D4 is connected to the pin 6 of the single-chip microcomputer, and the negative electrode of the led D5 is connected to the pin 2 of the single-chip microcomputer.
As shown in fig. 4, when the indicator light set 2 includes 2 leds, the indicator light set includes an led D4 and an led D5, a negative electrode of the led D4 is connected to an anode of the led D5 and a pin No. 6 of the single chip microcomputer, a negative electrode of the led D5 is connected to an anode of the led D4, and a negative electrode of the led D5 is connected to a pin No. 2 of the single chip microcomputer through a resistor R7.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. A residual current protector with a residual current level indicating function, comprising:
the residual current collection circuit (1), the residual current collection circuit (1) is used for collecting leakage signals in a circuit, a leakage detection chip U1 is arranged in the residual current collection circuit (1), and the leakage detection chip U1 is provided with an amplifying output pin;
the single-chip microcomputer U2 is provided with an AD sampling pin, and the single-chip microcomputer U2 is used for comparing a current leakage value with a preset tripping threshold value;
an indicator light set (2), the indicator light set (2) comprising at least 1 light emitting diode;
the singlechip U2 is connected with an amplified output pin of the leakage detection chip U1 through an AD sampling pin and indicates the current residual current value of the lamp group (2), and the singlechip U2 and the leakage detection chip U1 share a power supply.
2. The residual current protector with the residual current level indicating function according to claim 1, wherein a power input pin of the single-chip microcomputer U2 is connected with a power VCC, an AD sampling pin of the single-chip microcomputer U2 is connected with an amplifying output pin of the leakage detection chip U1, and a grounding pin of the single-chip microcomputer U2 is grounded.
3. A residual current protector with residual current level indicating function according to claim 1, characterized in that the indicator lamp group (2) indicates the residual current level by flashing frequency level.
4. A residual current protector with a residual current level indicating function according to claim 3, characterized in that the indicator lamp group (2) indicates the residual current level by the number of blinks.
5. A residual current protector with residual current level indicating function according to claim 1, characterized in that the indicator lamp group (2) indicates the residual current level by color.
6. The residual current protector with residual current level indicating function according to claim 5, wherein the indicating lamp group (2) includes at least 2 light emitting diodes, and indicates the residual current from small to large sequentially by green and red.
7. The residual current protector with residual current level indicating function according to claim 5, wherein the indicating lamp group (2) comprises at least 3 leds, and sequentially indicates the residual current from small to large by yellow, green, and red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223162609.8U CN219247463U (en) | 2022-11-28 | 2022-11-28 | Residual current protector with residual current magnitude indicating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223162609.8U CN219247463U (en) | 2022-11-28 | 2022-11-28 | Residual current protector with residual current magnitude indicating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219247463U true CN219247463U (en) | 2023-06-23 |
Family
ID=86841122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223162609.8U Active CN219247463U (en) | 2022-11-28 | 2022-11-28 | Residual current protector with residual current magnitude indicating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219247463U (en) |
-
2022
- 2022-11-28 CN CN202223162609.8U patent/CN219247463U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103208776A (en) | Breaker circuit with fault self-detection function | |
| CN103336168B (en) | A kind of Full-loop alternating-current self-test high-voltage electroscope | |
| CN204374295U (en) | A kind of induction-type high-voltage charged display device | |
| CN101835308A (en) | Led lamp control circuit and led lamp | |
| CN219247463U (en) | Residual current protector with residual current magnitude indicating function | |
| CN212013128U (en) | LED light source drive control system | |
| CN212180906U (en) | Three-phase live indicating circuit | |
| CN104935061B (en) | Battery charge prompting circuit and lamps and lanterns | |
| CN202975070U (en) | Probe of oscilloscope | |
| CN214585908U (en) | Indicator light detector | |
| CN212811309U (en) | Automatic power-off protection circuit and charging protection data line | |
| CN205037143U (en) | Decoration lamp string | |
| CN110703154A (en) | Socket test circuit and broadcast control method for socket test | |
| CN217282186U (en) | Arc leakage overvoltage flashing lamp circuit | |
| CN112290633A (en) | Circuit and method for indicating power supply by using bicolor light-emitting diode and oximeter | |
| CN215120109U (en) | Residual current operated circuit breaker with residual current indicating function | |
| CN220172521U (en) | Lightning protection socket with grounding detection function | |
| CN205646774U (en) | A two limit automatic protection wares for transformer voltage firm output | |
| CN205176223U (en) | Tester takes place for readable formula direct current | |
| CN220207828U (en) | Fault detection circuit of signal lamp | |
| CN205263275U (en) | Intelligence protection shield voltage acquisition line detection device | |
| CN212391594U (en) | Low-voltage direct-current system grounding polarity indicating device | |
| CN219266402U (en) | Alternating current/direct current dual-purpose ammeter circuit | |
| CN217335057U (en) | Power supply battery detection protection circuit and terminal equipment | |
| CN214100834U (en) | Residual current operated circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |