CN214409205U - Detection circuit of circuit board - Google Patents
Detection circuit of circuit board Download PDFInfo
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- CN214409205U CN214409205U CN202120285180.8U CN202120285180U CN214409205U CN 214409205 U CN214409205 U CN 214409205U CN 202120285180 U CN202120285180 U CN 202120285180U CN 214409205 U CN214409205 U CN 214409205U
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000005070 sampling Methods 0.000 claims abstract description 37
- 230000011664 signaling Effects 0.000 claims abstract description 6
- 238000011056 performance test Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model provides a detection circuitry of circuit board, include: the device comprises a control circuit, a sampling circuit and a tripping circuit, wherein the tripping circuit is connected with a load end of a circuit board to be tested; one end of the control circuit is connected with the external signal sending device, and the other end of the control circuit is connected with one end of the sampling circuit and used for collecting a leakage signal sent by the external signal sending device and sending the leakage signal to the sampling circuit; the other end of the sampling circuit is connected with the input end of the circuit board to be tested and used for generating a tripping signal according to the leakage signal and controlling a tripping circuit connected with the circuit board to be tested to trip. Through implementing the utility model discloses, solved present circuit board and can't carry out capability test's problem before putting into the circuit breaker.
Description
Technical Field
The utility model relates to a circuit breaker detection area, concretely relates to detection circuitry of circuit board.
Background
The circuit breaker is used as equipment for protecting the safety of lives and properties of people in a power distribution system, and can quickly cut off a power supply when the danger of electric leakage occurs, so that people can safely use electricity, and unnecessary loss is avoided. Therefore, in order to improve the operation reliability of the circuit breaker and guarantee the life and property safety of a user, performance test is required before the circuit breaker is delivered from a factory.
However, the existing detection method for the electronic circuit breaker with the circuit board is only to electrify the circuit board and measure the voltage of the test point of the circuit board, and cannot test the characteristics of action, time and the like before the circuit board is installed in the circuit breaker, so that the test is incomplete, when the action characteristics of the product cannot meet the factory requirements, the circuit board can only be detached and replaced, and the fault reason cannot be judged. Therefore, how to realize the performance detection of the electronic circuit breaker connection circuit board is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that can't carry out performance test before the circuit board is put into the circuit breaker among the prior art to a detection circuitry of circuit board is provided.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the embodiment of the utility model provides a detection circuitry of circuit board, electronic type circuit breaker is applied to the circuit board, detection circuitry includes: the device comprises a control circuit, a sampling circuit and a tripping circuit, wherein the tripping circuit is connected with a load end of a circuit board to be tested; one end of the control circuit is connected with an external signal sending device, and the other end of the control circuit is connected with one end of the sampling circuit and is used for collecting a leakage signal sent by the external signal sending device and sending the leakage signal to the sampling circuit; the other end of the sampling circuit is connected with the input end of the circuit board to be tested and is used for generating a tripping signal according to the leakage signal and controlling the tripping circuit connected with the circuit board to be tested to trip.
Optionally, the trip circuit comprises: and a first relay coil corresponding to the first relay is connected to the load end of the circuit board to be tested.
Optionally, the control circuit includes: the relay circuit comprises four relays; one end of each relay coil in the relay loop is connected with the first output end of the signal sending device through a first normally closed switch corresponding to the first relay, and the other end of each relay coil in the relay loop is connected with the fourth output end of the signal sending device through a first normally open switch corresponding to the second relay in the relay loop; each output end of the signal sending device is connected with the input end of the sampling circuit through a second normally open switch corresponding to each relay in the relay loop; the starting switch is connected in parallel with a first normally open switch corresponding to the second relay.
Optionally, the start switch is a jog switch.
Optionally, the control circuit further includes: and one end of the emergency stop switch is connected with the other end of the starting switch, and the other end of the emergency stop switch is connected with the fourth end of the signal sending device.
Optionally, the emergency stop switch is a self-locking switch.
Optionally, the sampling circuit comprises a current transformer.
Optionally, the detection circuit further comprises: the current transformer comprises a first indicator light, a second indicator light and a third indicator light, wherein one end of the first indicator light is connected with a first output end of the current transformer, and the other end of the first indicator light is connected with a fourth output end of the current transformer; one end of the second indicator light is connected with the second output end of the current transformer, and the other end of the second indicator light is connected with the fourth output end of the current transformer; one end of the third indicator light is connected with the third output end of the current transformer, and the other end of the third indicator light is connected with the fourth output end of the current transformer.
The utility model discloses technical scheme has following advantage:
the utility model provides a detection circuitry of circuit board, include: the device comprises a control circuit, a sampling circuit and a tripping circuit, wherein the tripping circuit is connected with a load end of a circuit board to be tested; one end of the control circuit is connected with the external signal sending device, and the other end of the control circuit is connected with one end of the sampling circuit and used for collecting a leakage signal sent by the external signal sending device and sending the leakage signal to the sampling circuit; the other end of the sampling circuit is connected with the input end of the circuit board to be tested and used for generating a tripping signal according to the leakage signal and controlling a tripping circuit connected with the circuit board to be tested to trip. Through in will await measuring the circuit board inserts detection circuitry, utilize detection circuitry to replace circuit breaker mechanism, the divide-shut brake of equivalent simulation circuit breaker realizes the test of electronic type circuit breaker circuit board characteristic, has solved present circuit board and can't carry out the problem of capability test before putting into the circuit breaker.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a specific example of a detection circuit of a circuit board according to an embodiment of the present invention;
fig. 2 is a tripping circuit diagram in the embodiment of the present invention;
FIG. 3 is a circuit diagram of the circuit board according to an embodiment of the present invention;
fig. 4 is a circuit diagram of the installation of the indicator light in the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The embodiment of the utility model provides a detection circuitry of circuit board for the realization is to the capability test of circuit board among the electronic type circuit breaker. As shown in fig. 1, the detection circuit includes: the device comprises a control circuit 1, a sampling circuit 2 and a tripping circuit 3, wherein the tripping circuit 3 is connected with a load end of a circuit board to be tested; one end of the control circuit 1 is connected with an external signal sending device, and the other end of the control circuit is connected with one end of the sampling circuit 2, and the control circuit is used for collecting a leakage signal sent by the external signal sending device and sending the leakage signal to the sampling circuit 2; the other end of the sampling circuit 2 is connected with the input end of the circuit board to be tested and is used for generating a tripping signal according to the leakage signal and controlling a tripping circuit 3 connected with the circuit board to be tested to trip.
In a specific embodiment, when performing a performance test on a circuit board to be tested, an input end of the circuit board to be tested is first connected to a sampling circuit 2 in a detection circuit, a load end (i.e., a leakage signal output end) is connected to a trip circuit 3 in the detection circuit, and the performance test on the circuit board to be tested is completed by using the detection circuit. Specifically, after the control circuit 1 collects the leakage signal sent by the external signal sending device, the leakage signal is sent to the sampling circuit 2, the sampling circuit 2 generates a trip signal according to the leakage signal, and the trip circuit 3 connected with the leakage signal output end of the circuit board to be tested is controlled to trip. Meanwhile, the detection circuit can also return a tripping signal to the external signal sending device, and a test result of the circuit board to be tested is displayed through a display screen of the external signal sending device. And if the test result shows that the tripping circuit 3 can be normally tripped, judging that the circuit board to be tested is qualified, and if the test result shows that the tripping circuit 3 cannot be normally tripped, judging that the circuit board to be tested is unqualified, and maintaining the fault that the circuit board to be tested cannot be tripped or removing the circuit board to be tested from the circuit board required by the installation of the circuit breaker. The embodiment of the utility model provides an in, sampling circuit 2 includes current transformer, utilizes current transformer to generate the tripping signal.
The utility model provides a detection circuitry of circuit board, include: the device comprises a control circuit, a sampling circuit and a tripping circuit, wherein the tripping circuit is connected with a load end of a circuit board to be tested; one end of the control circuit is connected with the external signal sending device, and the other end of the control circuit is connected with one end of the sampling circuit and used for collecting a leakage signal sent by the external signal sending device and sending the leakage signal to the sampling circuit; the other end of the sampling circuit is connected with the input end of the circuit board to be tested and used for generating a tripping signal according to the leakage signal and controlling a tripping circuit connected with the circuit board to be tested to trip. Through in will await measuring the circuit board inserts detection circuitry, utilize detection circuitry to replace circuit breaker mechanism, the divide-shut brake of equivalent simulation circuit breaker realizes the test of electronic type circuit breaker circuit board characteristic, has solved present circuit board and can't carry out the problem of capability test before putting into the circuit breaker.
In one embodiment, the trip circuit 3 includes: and a first relay coil corresponding to the first relay KJ1 and the first relay coil corresponding to the first relay KJ1 is connected to the load end of the circuit board to be tested.
In a specific embodiment, since the performance of the circuit board to be tested needs to be tested before the circuit board to be tested is installed in the circuit breaker, and at this time, due to the absence of the driving mechanism of the trip circuit 3, the trip operation cannot be completed after the control circuit 1 detects the leakage signal. Therefore, as shown in fig. 2, in the detection circuit, the trip operation is completed by the coil of the first relay KJ1 instead of the trip coil.
In one embodiment, as shown in fig. 3, the control circuit 1 includes: a relay loop 11 and a starting switch 12, wherein the relay loop 11 comprises four relays; one end of each relay coil in the relay loop 11 is connected with the first output end of the signal sending device through a first normally closed switch corresponding to the first relay KJ1, and the other end of each relay coil in the relay loop 11 is connected with the fourth output end of the signal sending device through a first normally open switch corresponding to the second relay KJ2 in the relay loop 11; each output end of the signal sending device is connected with the input end of the sampling circuit 2 through a second normally open switch corresponding to each relay in the relay loop 11; the starting switch 12 is connected in parallel with a first normally open switch corresponding to the second relay KJ 2.
In one embodiment, the start switch 12 is a jog switch. That is, when the start switch 12 is pressed, the relay circuit 11 is turned on, and when the hand is released, the start switch 12 rebounds, and the relay circuit 11 is opened. For preventing starting switch 12 and kick-backing after the loose hand starting switch 12, lead to relay return circuit 11 to lose the electricity the embodiment of the utility model provides an, at the first normally open switch that parallelly connected second relay KJ2 of starting switch 12 department corresponds, provide self-locking loop for starting switch 12.
In the embodiment of the present invention, as shown in fig. 3, the control circuit 1 further includes: and one end of the emergency stop switch 13 is connected with the other end of the starting switch 12, and the other end of the emergency stop switch 13 is connected with the fourth end of the signal sending device. Specifically, the emergency stop switch 13 is a self-locking switch, the emergency stop switch 13 is in a normally closed state, and when an emergency occurs, the detection circuit can be cut off by turning off the emergency stop switch 13. When the detection circuit returns to normal, the emergency stop switch 13 can be manually closed, and the emergency stop switch 13 is a self-locking switch, so that the emergency stop switch 13 is continuously turned on after being pressed.
In the embodiment of the present invention, as shown in fig. 3, the relay circuit 11 includes a second relay KJ2, a third relay KJ3, a fourth relay KJ4, and a fifth relay KJ 5. One end of second relay KJ2, the one end of third relay KJ3, the one end of fourth relay KJ4 and the one end of fifth relay KJ5 are connected with the first output of signal transmission device through the first normally closed switch that first relay KJ1 corresponds respectively, the other end of second relay KJ2, the other end of third relay KJ3, the other end of fourth relay KJ4 and the other end of fifth relay KJ5 are connected with the fourth output of signal transmission device through the first normally open switch that second relay KJ2 corresponds in relay return circuit 11 respectively. A first output end L1 of the signal sending device is connected with a first input end of the sampling circuit 2 through a second normally open switch corresponding to a second relay KJ2 in the relay loop 11; a second output end L2 of the signal sending device is connected with a second input end of the sampling circuit 2 through a first normally open switch and a second normally open switch corresponding to a third relay KJ3 in the relay loop 11; a third output end L3 of the signal sending device is connected with a third input end of the sampling circuit 2 through a first normally open switch and a second normally open switch corresponding to a fourth relay KJ4 in the relay loop 11; and a fourth output end N of the signal sending device is connected with a fourth input end of the sampling circuit 2 through a first normally open switch and a second normally open switch corresponding to a fifth relay KJ5 in the relay loop 11. In the embodiment of the present invention, the second relay KJ2, the third relay KJ3, the fourth relay KJ4 and the fifth relay KJ5 are two-pole relays, which is only used as an example and is not limited thereto.
Specifically, when carrying out performance test to the circuit board that awaits measuring, at first closed starting switch 12, relay return circuit 11 switches on in the twinkling of an eye, and second relay KJ2, third relay KJ3, fourth relay KJ4 and fifth relay KJ5 get electric, and the first normally open switch that second relay KJ2 corresponds is closed, provides the auto-lock return circuit for starting switch 12 for relay return circuit 11 keeps the on-state. Because second relay KJ2, third relay KJ3, fourth relay KJ4 and fifth relay KJ5 get electric, the second that second relay KJ2 corresponds normally opens the switch, first normally open switch and the second that third relay KJ3 corresponds normally open the switch, first normally open switch and the second that fourth relay KJ4 corresponds normally open the switch, first normally open switch and the second that fifth relay KJ5 corresponds normally open the switch and all are closed, detection circuitry switches on so far, can carry out performance test to the circuit board that awaits measuring.
Further, after the external signal sending device inputs a leakage signal to the current transformer through the normally open switches (the normally open switches are closed at this time) corresponding to the relays in the relay loop 11, the current transformer generates a trip signal according to the leakage signal, and controls the first relay KJ1 connected with the circuit board to be tested to lose power. Because first relay KJ1 loses the electricity, its first normally closed switch disconnection that corresponds, and then lead to relay return circuit 11 disconnection for the normally open switch that each relay corresponds in the relay return circuit 11 also becomes the off-state by the on-state, and so far, whole detection and detection circuit realizes the dropout, has accomplished the capability test to the circuit board that awaits measuring. The embodiment of the utility model provides an in, according to the equivalence principle, utilize first relay KJ1, second relay KJ2, third relay KJ3, fourth relay KJ4 and fifth relay KJ5 equivalence to replace circuit breaker mechanism, and then utilize the divide-shut brake of the detection circuitry equivalence mimic-disconnecting switch that the relay constitutes, realize the test of electronic type circuit breaker circuit board characteristic.
In one embodiment, as shown in fig. 4, the detection circuit further includes: the current transformer comprises a first indicator light LED1, a second indicator light LED2 and a third indicator light LED3, wherein one end of the first indicator light LED1 is connected with a first output end A of the current transformer, and the other end of the first indicator light LED1 is connected with a fourth output end N' of the current transformer; one end of the second indicator light LED2 is connected with the second output end B of the current transformer, and the other end is connected with the fourth output end N' of the current transformer; one end of the third indicator light LED3 is connected with the third output end C of the current transformer, and the other end is connected with the fourth output end N' of the current transformer.
In a specific embodiment, by arranging the indicator lamps on each phase of the current transformer, whether current exists on each phase of the current transformer can be judged through the on-off of the indicator lamps in the test process, and whether a leakage signal sent by the external signal sending device is normal is further judged through the on-off of the indicator lamps.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (8)
1. The utility model provides a detection circuitry of circuit board, electronic type circuit breaker is applied to the circuit board which characterized in that, detection circuitry includes: a control circuit, a sampling circuit and a tripping circuit, wherein,
the tripping circuit is connected with the load end of the circuit board to be tested;
one end of the control circuit is connected with an external signal sending device, and the other end of the control circuit is connected with one end of the sampling circuit and is used for collecting a leakage signal sent by the external signal sending device and sending the leakage signal to the sampling circuit;
the other end of the sampling circuit is connected with the input end of the circuit board to be tested and is used for generating a tripping signal according to the leakage signal and controlling the tripping circuit connected with the circuit board to be tested to trip.
2. The detection circuit of claim 1, wherein the trip circuit comprises: and a first relay coil corresponding to the first relay is connected to the load end of the circuit board to be tested.
3. The circuit for detecting a circuit board according to claim 2, wherein the control circuit comprises: a relay loop and a start switch, wherein,
the relay loop comprises four relays;
one end of each relay coil in the relay loop is connected with the first output end of the signal sending device through a first normally closed switch corresponding to the first relay, and the other end of each relay coil in the relay loop is connected with the fourth output end of the signal sending device through a first normally open switch corresponding to the second relay in the relay loop;
each output end of the signal sending device is connected with the input end of the sampling circuit through a second normally open switch corresponding to each relay in the relay loop;
the starting switch is connected in parallel with a first normally open switch corresponding to the second relay.
4. The circuit for detecting a circuit board according to claim 3, wherein the start switch is a jog switch.
5. The circuit for detecting a circuit board according to claim 4, wherein the control circuit further comprises: and one end of the emergency stop switch is connected with the other end of the starting switch, and the other end of the emergency stop switch is connected with the fourth end of the signal sending device.
6. The circuit for detecting the circuit board according to claim 5, wherein the emergency stop switch is a self-locking switch.
7. The detection circuit of claim 1, wherein the sampling circuit comprises a current transformer.
8. The circuit for detecting a wiring board according to claim 7, wherein the detection circuit further comprises: a first indicator light, a second indicator light and a third indicator light, wherein,
one end of the first indicator light is connected with the first output end of the current transformer, and the other end of the first indicator light is connected with the fourth output end of the current transformer;
one end of the second indicator light is connected with the second output end of the current transformer, and the other end of the second indicator light is connected with the fourth output end of the current transformer;
one end of the third indicator light is connected with the third output end of the current transformer, and the other end of the third indicator light is connected with the fourth output end of the current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285180.8U CN214409205U (en) | 2021-02-01 | 2021-02-01 | Detection circuit of circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285180.8U CN214409205U (en) | 2021-02-01 | 2021-02-01 | Detection circuit of circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214409205U true CN214409205U (en) | 2021-10-15 |
Family
ID=78020046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120285180.8U Active CN214409205U (en) | 2021-02-01 | 2021-02-01 | Detection circuit of circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214409205U (en) |
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2021
- 2021-02-01 CN CN202120285180.8U patent/CN214409205U/en active Active
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