CN223501148U - An intelligent detection device for open circuits and short circuits - Google Patents
An intelligent detection device for open circuits and short circuitsInfo
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- CN223501148U CN223501148U CN202522027199.3U CN202522027199U CN223501148U CN 223501148 U CN223501148 U CN 223501148U CN 202522027199 U CN202522027199 U CN 202522027199U CN 223501148 U CN223501148 U CN 223501148U
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Abstract
The utility model relates to the technical field of detection circuits, in particular to an intelligent open circuit and short circuit detection device which comprises an input interface connected with one end of a circuit to be detected, an output interface connected with the other end of the circuit to be detected, and an analog switch circuit, wherein the analog switch circuit comprises an input connection module and an output connection module, the input connection module is connected with the input interface, the output connection module is connected with the output interface, the input connection module and the output connection module both comprise analog switch chips, the analog switch chips are used for determining target core wires of the circuit to be detected based on selection, an MCU (micro control unit) is connected with the module switch circuit, an LED (light emitting diode) indicator lamp circuit is connected with an MCU and used for indicating detection results of the target core wires, and selection and detection of the target core wires are realized through the analog switch circuit, so that detection results of all the target core wires are provided, and detection omission is avoided.
Description
Technical Field
The utility model relates to the technical field of detection circuits, in particular to an intelligent open circuit and short circuit detection device.
Background
In the traditional detection of open circuit and short circuit of wire harness or interface, often adopt the manual work to measure the bad phenomenon of open circuit and short circuit through universal meter buzzer on-off mode to judge whether there is open circuit and short circuit, but in power electronic system, wire harness or interface's kind is complicated, heart yearn quantity is many, adopts manual measuring mode not only inefficiency, still probably has the heart yearn that awaits measuring of omission during the measurement, can't guarantee measuring result's accuracy, when wire harness or interface appear open circuit or short circuit, can't in time discover, can lead to serious result, this kind of detection mode has failed to satisfy technical requirement and management requirement at present.
Therefore, how to provide a detection circuit to avoid the problems of open circuit and short circuit detection omission.
Disclosure of utility model
The present utility model has been made in view of the above problems, and it is an object of the present utility model to provide an open-circuit, short-circuit intelligent detection device that overcomes or at least partially solves the above problems.
The utility model provides an intelligent open circuit and short circuit detection device, which comprises:
The input interface is connected with one end of the circuit to be detected;
the output interface is connected with the other end of the circuit to be detected;
The analog switch circuit comprises an input connection module and an output connection module, wherein the input connection module is connected with an input interface, the output connection module is connected with an output interface, the input connection module and the output connection module both comprise analog switch chips, and the analog switch chips are used for determining a target core wire of the circuit to be detected based on selection;
MCU, connect the said analog switch circuit;
And the LED indicator lamp circuit is connected with the MCU and used for indicating the detection result of the target core wire.
Preferably, the input connection module at least comprises an analog switch chip, and the output connection module at least comprises an analog switch chip;
the analog switch chip comprises 8 core wire connection pins, 1 enabling end pin, 3 selecting end pins and 1 public pin.
Preferably, when the input connection module and the output connection module each include a first analog switch chip, the circuit to be detected for detecting at most 8 core wires is used.
Preferably, when the input connection module and the output connection module each include a second analog switch chip and a third analog switch chip, a circuit to be detected for detecting at most 15 core wires;
wherein the common pin of the second analog switch chip is connected to any one of the core wire connection pins of the third analog switch chip.
Preferably, when the input connection module and the output connection module each include a fourth analog switch chip, a fifth analog switch chip, and a sixth analog switch chip, a circuit to be detected for detecting at most 22 core wires;
The common pin of the fourth analog switch chip is connected to any core wire connection pin of the sixth analog switch chip, and the common pin of the fifth analog switch chip is connected to any remaining core wire connection pin of the sixth analog switch chip.
Preferably, when the open circuit detection is performed, the MCU inputs a first selection signal to the analog switch circuit, so that an input connection module of the analog switch circuit selects a first core wire, and the output connection module selects a corresponding first core wire, determines whether the total output end of the analog switch circuit is at a high level, if so, determines that the first core wire is open circuit, if not, determines that the first core wire is normally conducted, and the first core wire is a target core wire.
Preferably, when the short circuit is detected, the MCU inputs a second selection signal to the analog switch circuit, so that the input connection module of the analog switch circuit selects a second core wire, the output connection module selects a third core wire, the third core wire is another core wire unrelated to the second core wire, whether the output of the analog switch circuit is at a high level is judged, if yes, it is determined that the second core wire and the third core wire are not in short circuit, and if not, it is determined that the second core wire and the third core wire are in short circuit.
Preferably, the LED indicator light circuit includes:
Blue indicator light, green indicator light and red indicator light;
The blue indicator lights are illuminated while the device is in detection;
When the equipment detection is finished and the detection result is qualified, a green indicator lamp is lightened;
when the equipment detection is finished and the detection result is unqualified, a red indicator lamp is lighted
And if the detection result is qualified, the target core wire is short-circuited or conducted, and if the detection result is unqualified, the target core wire is short-circuited or open-circuited.
Preferably, the method further comprises:
And the buzzer is connected with the MCU and used for being opened or closed based on the detection result of the target core wire.
Preferably, the method further comprises:
and the display screen is connected with the MCU and used for displaying based on the detection result of the target core wire.
One or more technical solutions in the embodiments of the present utility model at least have the following technical effects or advantages:
The utility model provides intelligent open circuit and short circuit detection equipment which comprises an input interface, an output interface and an analog switch circuit, wherein the input interface is connected with one end of a circuit to be detected, the output interface is connected with the other end of the circuit to be detected, the analog switch circuit comprises an input connection module and an output connection module, the input connection module is connected with the input interface, the output connection module is connected with the output interface, the input connection module and the output connection module respectively comprise an analog switch chip, the analog switch chips are used for determining target core wires of the circuit to be detected based on selection, the MCU is connected with the module switch circuit, the LED indicator lamp circuit is connected with the MCU and used for indicating detection results of the target core wires, and the selection and detection of the target core wires are realized through the analog switch circuit, so that detection results of all the target core wires are provided, and detection omission is avoided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also throughout the drawings, like reference numerals are used to designate like parts. In the drawings:
FIG. 1 shows a schematic structural diagram of an open circuit and short circuit intelligent detection device in an embodiment of the utility model;
FIG. 2 is a schematic diagram showing the structure of an input connection module including 3 analog switches according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram showing the structure of an output connection module including 3 analog switches according to an embodiment of the present utility model;
Fig. 4 shows a schematic structural diagram of another open circuit and short circuit intelligent detection device in an embodiment of the utility model.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present utility model, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
The embodiment of the utility model provides an intelligent open circuit and short circuit detection device, as shown in fig. 1, comprising:
an input interface 101 connected to one end of the circuit to be detected;
The output interface 102 is connected with the other end of the circuit to be detected;
The analog switch circuit 103 comprises an input connection module 1031 and an output connection module 1032, wherein the input connection module 1031 is connected with the input interface 101, the output connection module 1032 is connected with the output interface 102, the input connection module 1031 and the output connection module 1032 are both analog switch chips, and the analog switch chips are used for determining a target core wire of the circuit to be detected based on selection;
MCU104, connect analog switch circuit 103;
The LED indicator light circuit 105 is connected with the MCU and used for indicating the detection result of the target core wire.
In a specific embodiment, the MCU104 controls the analog switch circuit 103 to select and control the target core wire in the circuit to be detected, so as to realize the detection of the open circuit and the short circuit of the target core wire.
Specifically, the input connection module 1031 includes at least one analog switch chip, and the output connection module 1032 includes at least one analog switch chip;
The analog switch chip comprises 8 core wire connection pins, 1 enabling end pin, 3 selecting end pins and 1 public pin.
The following detailed description is provided for different embodiments:
when the input connection module 1031 and the output connection module 1032 each include a first analog switch chip, the circuit to be detected is used for detecting at most 8 core wires.
One end of the core wire of the circuit to be detected is connected to 8 core wire connection pins of the first analog switch chip in a one-to-one correspondence manner, the enable end pin e# and the select end pins S0, S1 and S2 are respectively connected to the IO port of the MCU104, and the first analog switch chip of the input connection module 1031 and the first analog switch chip of the output connection module 1032 are the same.
The operation of a single analog multiplexer is controlled by controlling the enabling end pin E# and the core wire connection pins (Y0-Y7) are selected to be communicated with the common pin Z by controlling the selecting end pins (S0, S1 and S2), so that the subsequent detection of open circuits and short circuits is realized.
Wherein, the common pin Z of any one of the input connection module 1031 and the output connection module 1032 is grounded, and the common pin Z of the other first analog switch chip is connected to the MCU104.
When the input connection module 1031 and the output connection module 1032 each include a second analog switch chip and a second analog switch chip, the common pin Z of the second analog switch chip is connected to any one core connection pin Yi of the third analog switch chip, for detecting a circuit to be detected of at most 15 cores.
Since the second analog switch chip has 8 core connection pins, the third analog switch chip has 7 core connection pins, wherein the remaining one core connection pin is used for connecting the common pin Z of the second analog switch chip. Thereby 8+7 =15 cores can be detected.
The common pin Z of any one of the third analog switch chips of the input connection module 1031 and the output connection module 1032 is grounded, and then the common pin Z of the other third analog switch chip is connected to the MCU104.
As shown in fig. 2 and 3, when the input connection module 1031 and the output connection module 1032 each include the fourth analog switch chip 201, the fifth analog switch chip 202, and the sixth analog switch chip 203, a circuit to be detected for detecting at most 22 cores is provided, wherein the common pin Z of the fourth analog switch chip 201 is connected to any one core connection pin Yi of the sixth analog switch chip 203, and the common pin Z of the fifth analog switch chip 202 is connected to any remaining core connection pin of the sixth analog switch chip.
Thus, since the fourth analog switch chip 201 has 8 core wire connection pins, the fifth analog switch chip 202 has 8 core wire connection pins, and the sixth analog switch chip 203 can detect 8+8+6=22 core wires since it occupies two core wire connection pins Yi and Yj for connecting the fourth analog switch chip 201 and the fifth analog switch chip 202, respectively.
The common pin Z of any one of the sixth analog switch chips in the input connection module 1031 and the output connection module 1032 is grounded, and then the common pin Z of the other third analog switch chip is connected to the MCU104.
Of course, there may be more connection modes for matching detection of more paths of core wires, which will not be described in detail herein.
The open and short circuit are detected separately as follows:
When open circuit detection is performed, the MCU104 inputs a first selection signal to the analog switch circuit 103, so that the input connection module 1031 of the analog switch circuit 103 selects a first core wire, the output connection module 1031 selects a corresponding first core wire, determines whether the output of the analog switch circuit 103 is at a high level, if yes, determines that the first core wire is open circuit, if no, determines that the first core wire is normally conducted, and the first core wire is a target core wire.
That is, if the first core is open, both ends of the first core are grounded, and are both low, and if a high level occurs, this indicates open.
When short circuit detection is performed, the short circuit detection is detection between any two different core wires, the MCU104 inputs a second selection signal like the analog switch circuit 103, so that the input connection module 1031 of the analog switch circuit 103 selects a second core wire, the output connection module 1032 selects a third core wire, the third core wire is other core wires irrelevant to the second core wire, whether the output of the analog switch circuit is in a high level is judged, if yes, it is determined that the second core wire and the third core wire are not in short circuit, and if not, it is determined that the second core wire and the third core wire are in short circuit.
The second core wire and the third core wire are any two core wires in the circuit to be detected. That is, when the second core line and the third core line are short-circuited, the output of the other end is determined to be a short circuit when the other end is grounded, and it is needless to say that the second core line and the third core line are not short-circuited when the output is high.
In an alternative embodiment, the LED indicator light circuit 105 comprises a blue indicator light, a green indicator light and a red indicator light, wherein the blue indicator light is lightened when the open circuit and short circuit intelligent detection device is in detection, the green indicator light is lightened when the open circuit and short circuit intelligent detection device is finished and the detection result is qualified, and the red indicator light is lightened when the open circuit and short circuit intelligent detection device is finished and the detection result is unqualified.
The detection states of the detection equipment are indicated by the indicator lamps with different colors, so that the detection states in different periods can be clearly displayed.
In an alternative embodiment, as shown in fig. 4, the intelligent detection device further comprises a buzzer 106 connected to the MCU104 for opening and closing based on the detection result of the target core wire.
Specifically, when the detection result of the target core wire indicates that an open circuit or a short circuit condition occurs, an alarm is given through the buzzer 106, and when the detection result of the target core wire indicates that the core wire is normal, the buzzer is controlled to be turned off. The tester can be intuitively reminded to pay attention by the buzzer alarm.
In an alternative embodiment, the intelligent detection device further comprises a display screen 107 connected to the MCU104 for displaying based on the detection result of the target core wire, and displaying whether the failed core wire is an open circuit or a short circuit and which core wire is specifically one of the failed core wires through the display screen 107.
Besides, the intelligent detection equipment is also provided with a power interface, a power switch and the like, so that power supply for each device is realized.
One or more technical solutions in the embodiments of the present utility model at least have the following technical effects or advantages:
The utility model provides intelligent open circuit and short circuit detection equipment which comprises an input interface, an output interface and an analog switch circuit, wherein the input interface is connected with one end of a circuit to be detected, the output interface is connected with the other end of the circuit to be detected, the analog switch circuit comprises an input connection module and an output connection module, the input connection module is connected with the input interface, the output connection module is connected with the output interface, the input connection module and the output connection module respectively comprise an analog switch chip, the analog switch chips are used for determining target core wires of the circuit to be detected based on selection, the MCU is connected with the module switch circuit, the LED indicator lamp circuit is connected with the MCU and used for indicating detection results of the target core wires, and the selection and detection of the target core wires are realized through the analog switch circuit, so that detection results of all the target core wires are provided, and detection omission is avoided.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. An intelligent open circuit and short circuit detection device, which is characterized by comprising:
The input interface is connected with one end of the circuit to be detected;
the output interface is connected with the other end of the circuit to be detected;
The analog switch circuit comprises an input connection module and an output connection module, wherein the input connection module is connected with an input interface, the output connection module is connected with an output interface, the input connection module and the output connection module both comprise analog switch chips, and the analog switch chips are used for determining a target core wire of the circuit to be detected based on selection;
MCU, connect the said analog switch circuit;
And the LED indicator lamp circuit is connected with the MCU and used for indicating the detection result of the target core wire.
2. The intelligent open-circuit and short-circuit detection device according to claim 1, wherein the input connection module comprises at least one analog switch chip, and the output connection module comprises at least one analog switch chip;
the analog switch chip comprises 8 core wire connection pins, 1 enabling end pin, 3 selecting end pins and 1 public pin.
3. The open-circuit and short-circuit intelligent detection device according to claim 2, wherein the circuit to be detected is configured to detect at most 8 core wires when the input connection module and the output connection module each include a first analog switch chip.
4. The open-circuit, short-circuit intelligent detection device according to claim 2, wherein when the input connection module and the output connection module each include a second analog switch chip and a third analog switch chip, a circuit to be detected for detecting at most 15 core wires;
wherein the common pin of the second analog switch chip is connected to any one of the core wire connection pins of the third analog switch chip.
5. The open-circuit and short-circuit intelligent detection device according to claim 2, wherein when the input connection module and the output connection module each include a fourth analog switch chip, a fifth analog switch chip, and a sixth analog switch chip, a circuit to be detected for detecting at most 22 core wires;
The common pin of the fourth analog switch chip is connected to any core wire connection pin of the sixth analog switch chip, and the common pin of the fifth analog switch chip is connected to any remaining core wire connection pin of the sixth analog switch chip.
6. The intelligent open circuit and short circuit detection device according to claim 2, wherein when open circuit detection is performed, the MCU inputs a first selection signal to the analog switch circuit, so that an input connection module of the analog switch circuit selects a first core wire, the output connection module selects a corresponding first core wire, judges whether a total output end of the analog switch circuit is at a high level, if yes, determines that the first core wire is open circuit, if not, determines that the first core wire is normally conducted, and the first core wire is a target core wire.
7. The open-circuit and short-circuit intelligent detection device according to claim 2, wherein when short-circuit detection is performed, the MCU inputs a second selection signal to the analog switch circuit, so that the input connection module of the analog switch circuit selects a second core wire, the output connection module selects a third core wire, the third core wire is another core wire which is not related to the second core wire, judges whether the output of the analog switch circuit is at a high level, if yes, determines that there is no short circuit between the second core wire and the third core wire, and if not, determines that there is a short circuit between the second core wire and the third core wire.
8. The open-circuit, short-circuit intelligent detection device of claim 1, wherein the LED indicator light circuit comprises:
Blue indicator light, green indicator light and red indicator light;
The blue indicator lights are illuminated while the device is in detection;
When the equipment detection is finished and the detection result is qualified, a green indicator lamp is lightened;
When the equipment detection is finished and the detection result is unqualified, a red indicator lamp is lightened;
And if the detection result is qualified, the target core wire is short-circuited or conducted, and if the detection result is unqualified, the target core wire is short-circuited or open-circuited.
9. The open-circuit, short-circuit intelligent detection device of claim 8, further comprising:
And the buzzer is connected with the MCU and used for being opened or closed based on the detection result of the target core wire.
10. The open-circuit, short-circuit intelligent detection device of claim 8, further comprising:
and the display screen is connected with the MCU and used for displaying based on the detection result of the target core wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202522027199.3U CN223501148U (en) | 2025-09-22 | 2025-09-22 | An intelligent detection device for open circuits and short circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202522027199.3U CN223501148U (en) | 2025-09-22 | 2025-09-22 | An intelligent detection device for open circuits and short circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223501148U true CN223501148U (en) | 2025-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202522027199.3U Active CN223501148U (en) | 2025-09-22 | 2025-09-22 | An intelligent detection device for open circuits and short circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223501148U (en) |
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2025
- 2025-09-22 CN CN202522027199.3U patent/CN223501148U/en active Active
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