CN219758474U - Novel circuit breakpoint detection device - Google Patents
Novel circuit breakpoint detection device Download PDFInfo
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- CN219758474U CN219758474U CN202320879557.1U CN202320879557U CN219758474U CN 219758474 U CN219758474 U CN 219758474U CN 202320879557 U CN202320879557 U CN 202320879557U CN 219758474 U CN219758474 U CN 219758474U
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- 238000001514 detection method Methods 0.000 title claims abstract description 90
- 230000006698 induction Effects 0.000 claims abstract description 55
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a novel circuit breakpoint detection device, which comprises: the test pencil comprises a test pencil body, an induction antenna, a detection circuit and a warning unit. The induction antenna is arranged on the test pencil body and is detachably connected with the detection circuit, and is electrically connected with the detection circuit and used for generating detection signals by electromagnetic waves radiated outwards at the break point of the induction circuit and inputting the detection signals to the detection circuit. The warning unit is arranged in the detection circuit, the detection circuit is used for receiving the detection signal, amplifying the detection signal, processing the signal and transmitting the detection signal to the warning unit, and the warning unit is used for prompting the circuit at the current detection position to generate a breakpoint. The circuit can judge the breakpoint position under the condition that the electric wire is not powered off, can judge the voltage and the frequency of the detected circuit at the same time, has high precision, small volume, simplicity and rapidness, can clearly see the operation result, and is suitable for inexperienced personnel. The replaceable induction antenna is suitable for circuits with different frequencies, so that measurement is more accurate, and the induction antenna is convenient to assemble and disassemble and simple in structure.
Description
Technical Field
The utility model belongs to the technical field of circuit detection, and particularly relates to a novel circuit breakpoint detection device.
Background
In the electrical appliance maintenance, some faults such as wire disconnection, cold joint, printing plate breakage, poor contact inside parts and the like are frequently encountered, and maintenance staff mostly carry out maintenance by experience. Some faults are visible to the naked eye, but some faults take a lot of effort and time and sometimes cannot be found. In a low frequency circuit, such as a conventional household circuit, when a break point occurs in a wire in a line, it is difficult to find a specific location because the wire is not exposed. In a medium-frequency circuit or even a high-frequency circuit, the conventional analysis method and analysis instrument can not meet the requirements far more, so that a novel detection device capable of detecting breakpoints of various frequency circuits becomes a problem to be solved urgently.
Disclosure of Invention
The utility model aims to provide a novel circuit breakpoint detection device for solving the background technical problem.
In order to solve the problems, the technical scheme of the utility model is as follows:
a novel circuit breakpoint detection device, comprising:
the test pencil comprises a test pencil body, an induction antenna, a detection circuit and a warning unit;
the induction antenna is arranged on the test pencil body and is detachably connected with the detection circuit, and is electrically connected with the detection circuit and used for generating detection signals by electromagnetic waves radiated outwards at the break point of the induction circuit and inputting the detection signals to the detection circuit;
the warning unit is arranged in the detection circuit, the detection circuit is used for receiving the detection signal, amplifying the detection signal, processing the signal and transmitting the detection signal to the warning unit, and the warning unit is used for prompting the circuit at the current detection position to generate a breakpoint.
Specifically, the detection circuit comprises a first resistor, an amplifying sub-circuit and a power supply;
the signal output end of the induction antenna is respectively and electrically connected with one end of a first resistor and an amplifier circuit, the first resistor is a pull-up resistor of the signal output end of the induction antenna, and the other end of the first resistor is electrically connected with the positive electrode of a power supply; the amplifying sub-circuit is connected with the power supply in parallel; the amplifying sub-circuit is used for receiving the detection signal, amplifying the detection signal and outputting the amplified detection signal; the power supply is used to provide power support for the detection circuit.
Specifically, the amplifying sub-module comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first triode, a second triode and a third triode;
the base electrode of the first triode is electrically connected with the output end of the induction antenna signal, the collector electrode of the first triode is electrically connected with one end of the second resistor, the other end of the second resistor is electrically connected with the positive electrode of the power supply, the emitter electrode of the first triode is electrically connected with one end of the fifth resistor, and the other end of the fifth resistor is grounded;
the base electrode of the second triode is electrically connected with the collector electrode of the first triode, the collector electrode of the second triode is electrically connected with one end of the third resistor, the other end of the third resistor is electrically connected with the positive electrode of the power supply, the emitter electrode of the second triode is electrically connected with one end of the sixth resistor, and the other end of the sixth resistor is grounded;
the base electrode of the third triode is electrically connected with the collector electrode of the second triode, the collector electrode of the third triode is respectively electrically connected with one end of the fourth resistor and the warning unit, the other end of the fourth resistor is electrically connected with the positive electrode of the power supply, the emitting electrode of the third triode is electrically connected with one end of the seventh resistor, and the other end of the seventh resistor is grounded.
Specifically, the second resistor is a pull-up resistor of the first triode, the third resistor is a pull-up resistor of the second triode, and the fourth resistor is a pull-up resistor of the third triode;
the fifth resistor is the bias resistor of the first triode, the sixth resistor is the bias resistor of the second triode, and the seventh resistor is the bias resistor of the third triode.
The warning unit is a buzzer or a light emitting diode, one end of the warning unit is electrically connected with the collector electrode of the third triode, and the other end of the warning unit is grounded.
The detection circuit comprises a singlechip and a display;
the signal input end of the singlechip is electrically connected with the collector electrode of the third triode, and the signal output end of the singlechip is electrically connected with the display;
the singlechip is used for receiving the detection signal, then performing signal processing and sending the detection signal to the display to display the voltage parameter at the circuit break point, and the display surface of the display is arranged on the side wall of the test pencil body.
The induction antenna is in threaded connection with the test pencil body, and can be replaced in the high-frequency induction antenna, the medium-frequency induction antenna and the low-frequency induction antenna according to different frequencies of a circuit to be detected;
the low-frequency induction antenna adopts a winding built-in antenna, and the antenna is wound on the pen cap of the test pencil body so as to increase the length of the antenna.
The intermediate frequency induction antenna adopts the design of a winding built-in antenna, the antenna is wound on the pen cap of the test pencil body, and the winding number of turns is less relative to the low frequency induction antenna.
The high-frequency induction antenna adopts a design of an internal antenna, and the antenna is arranged inside the pen cap.
By adopting the technical scheme, the utility model has the following advantages and positive effects compared with the prior art:
under the condition of electrifying, the utility model continuously receives the outward radiation electromagnetic wave, the signal of the electromagnetic wave is detected by the induction antenna, the detection signal is amplified for a plurality of times by the amplifying sub-circuit, at the moment, the detection personnel can detect the break point through the loudspeaker of the sounding circuit, and meanwhile, the voltage parameter is fed back to the display screen. The utility model can judge the breakpoint position of the electric wire under the condition of no power failure of the electric wire, can judge the voltage, the frequency and the like of the detected circuit approximately by displaying the voltage, has the characteristics of high precision, small volume, simplicity and rapidness, and can ensure that the operation result is clear at a glance and is suitable for inexperienced personnel. On the other hand, the replaceable induction antenna is suitable for circuits with different frequencies, so that measurement is more accurate, and the induction antenna is convenient to assemble and disassemble and simple in structure.
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.
FIG. 1 is a schematic view of the structure of the test pencil body of the present utility model;
fig. 2 is a schematic structural diagram of a low frequency induction antenna according to the present utility model;
fig. 3 is a schematic structural diagram of an intermediate frequency induction antenna according to the present utility model;
fig. 4 is a schematic structural diagram of a high frequency induction antenna according to the present utility model;
FIG. 5 is a schematic diagram of a detection circuit according to the present utility model;
FIG. 6 is a diagram showing the implementation of the novel circuit break point detection device of the present utility model; .
Description of the reference numerals
1: a test pencil body; 2: a detection circuit; 3: an inductive antenna; 4: an amplifying sub-circuit; 5: a single chip microcomputer; 6: a warning unit; 7: a display; 8: and a power supply.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present utility model are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
The utility model provides a novel circuit break point detection device which is further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the utility model will become more apparent from the following description and from the claims.
Examples
Referring to fig. 1 to 6, the present embodiment provides a novel circuit break point detection device, including: the test pencil comprises a test pencil body 1, a detection circuit 2 and a warning unit 6 which are arranged in the test pencil body 1, and an induction antenna 3 which is arranged in the test pencil body 1. The induction antenna 3 is installed on the test pencil body 1 and is detachably connected, the induction antenna 3 is electrically connected with the detection circuit 2, and is used for generating detection signals by electromagnetic waves radiated outwards at the break point of the induction circuit and inputting the detection signals to the detection circuit 2. The warning unit 6 is arranged in the detection circuit 2, amplifies the received detection signal, processes the signal, and transmits the amplified signal to the warning unit 6, and the warning unit 6 is used for prompting the circuit at the current detection position to generate a breakpoint.
Referring to fig. 5, specifically, in the present embodiment, the detection circuit 2 includes a first resistor R1, an amplifying sub-circuit 4, a power supply 8; the signal output end of the induction antenna 3 is electrically connected with one end of the first resistor R1 and the amplifying sub-circuit 4, the first resistor R1 is used as a pull-up resistor of the signal output end of the induction antenna 3, and the other end of the first resistor R1 is electrically connected with the positive electrode of the power supply 8. The amplifying sub-circuit 4 is connected in parallel with the power supply 8, the amplifying sub-circuit 4 receives the detection signal and outputs the detection signal after amplifying, and the power supply 8 provides power support for the whole detection circuit 2.
Specifically, referring to fig. 5, the amplifying sub-module includes a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first transistor Q1, a second transistor Q2, and a third transistor Q3. The base electrode of the first triode Q1 is electrically connected with the signal output end of the induction antenna 3, the collector electrode of the first triode Q1 is electrically connected with the positive electrode of the power supply 8 through the second resistor R2, and the emitter electrode of the first triode Q1 is grounded through the fifth resistor R5. The base electrode of the second triode Q2 is electrically connected with the collector electrode of the first triode Q1, the collector electrode of the second triode Q2 is electrically connected with the positive electrode of the power supply 8 through a third resistor R3, and the emitter electrode of the second triode Q2 is grounded through a sixth resistor R6. The base electrode of the third triode Q3 is electrically connected with the collector electrode of the second triode Q2, and the collector electrode of the third triode Q3 is electrically connected with the positive electrode of the power supply 8 through a fourth resistor R4. The collector of the third triode Q3 also serves as an amplified detection signal output terminal. The emitter of the third triode Q3 is grounded through a seventh resistor R7.
The second resistor R2 is a pull-up resistor of the first triode Q1, the third resistor R3 is a pull-up resistor of the second triode Q2, and the fourth resistor R4 is a pull-up resistor of the third triode Q3. The fifth resistor R5 is a bias resistor of the first transistor Q1, the sixth resistor R6 is a bias resistor of the second transistor Q2, and the seventh resistor R7 is a bias resistor of the third transistor Q3. The model of the triode is S8050.
Next, referring to fig. 1 and 5, the warning unit 6 is a buzzer or a light emitting diode, one end of the warning unit 6 is electrically connected to the collector of the third triode Q3, and the other end of the warning unit 6 is grounded.
Preferably, the detection circuit 2 comprises a single chip microcomputer 5 and a display 7, wherein a signal input end of the single chip microcomputer 5 is electrically connected with a collector electrode of the third triode Q3, and a signal output end of the single chip microcomputer 5 is electrically connected with the display 7. The singlechip 5 receives the detection signal, processes the signal and sends the signal to the display 7 to display the voltage parameter at the circuit break point, and the display surface of the display 7 is arranged on the side wall of the test pencil body 1, as shown in fig. 1. The display 7 adopts a nixie tube.
Referring to fig. 2 to 4, the induction antenna 3 is in threaded connection with the test pencil body 1, and serves as a cap of the test pencil, and can select among a high-frequency induction antenna, an intermediate-frequency induction antenna and a low-frequency induction antenna according to different frequencies of the circuit 2 to be detected. For better measurement of low-frequency signals, the low-frequency induction antenna adopts a winding type built-in antenna on the pen cap, and the winding number of turns is as large as possible so as to increase the length of the antenna; the medium-frequency induction antenna also adopts the design of a winding type built-in antenna, the winding number of turns is moderate, and the winding number of turns is less relative to that of the low-frequency induction antenna; the high-frequency induction antenna is directly connected with the test pencil.
Referring to fig. 6, a description will now be given of the implementation procedure of the present embodiment:
under the condition of electrifying, a detector approaches to a circuit to be detected through the induction antenna 3 on the test pencil body 1, the induction antenna 3 senses electromagnetic waves continuously radiated outwards at a break point of a line, a detection signal can drive the buzzer or the light-emitting diode after being amplified by the multi-time triode operation circuit, the detector can judge the position of the break point through the buzzer or the light-emitting diode, and meanwhile, the amplified voltage parameters are fed back to the display screen after being processed by the singlechip 5 for being read by the detector.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Even if various changes are made to the present utility model, it is within the scope of the appended claims and their equivalents to fall within the scope of the utility model.
Claims (7)
1. A novel circuit breakpoint detection device, characterized by comprising:
the test pencil comprises a test pencil body, an induction antenna, a detection circuit and a warning unit;
the induction antenna is arranged on the test pencil body and is detachably connected with the detection circuit, and is electrically connected with the detection circuit and used for inducing electromagnetic waves radiated outwards at the break point of the detection circuit to generate detection signals and inputting the detection signals to the detection circuit;
the warning unit is arranged in the detection circuit, the detection circuit is used for receiving the detection signal, amplifying the detection signal and transmitting the detection signal to the warning unit after signal processing, and the warning unit is used for prompting the circuit at the current detection position to have a breakpoint.
2. The novel circuit break point detection device according to claim 1, wherein,
the detection circuit comprises a first resistor, an amplifying sub-circuit and a power supply;
the signal output end of the induction antenna is respectively and electrically connected with one end of the first resistor and the amplifying sub-circuit, the first resistor is a pull-up resistor of the signal output end of the induction antenna, and the other end of the first resistor is electrically connected with the positive electrode of the power supply; the amplifying sub-circuit is arranged in parallel with the power supply; the amplifying sub-circuit is used for receiving the detection signal, amplifying the detection signal and outputting the amplified detection signal; the power supply is used for providing power support for the detection circuit.
3. The novel circuit break point detection device according to claim 2, wherein the amplifying sub-module comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first triode, a second triode and a third triode;
the base electrode of the first triode is electrically connected with the output end of the induction antenna signal, the collector electrode of the first triode is electrically connected with one end of the second resistor, the other end of the second resistor is electrically connected with the positive electrode of the power supply, the emitter electrode of the first triode is electrically connected with one end of the fifth resistor, and the other end of the fifth resistor is grounded;
the base electrode of the second triode is electrically connected with the collector electrode of the first triode, the collector electrode of the second triode is electrically connected with one end of the third resistor, the other end of the third resistor is electrically connected with the positive electrode of the power supply, the emitter electrode of the second triode is electrically connected with one end of the sixth resistor, and the other end of the sixth resistor is grounded;
the base of the third triode is electrically connected with the collector of the second triode, the collector of the third triode is electrically connected with one end of the fourth resistor and the warning unit respectively, the other end of the fourth resistor is electrically connected with the positive electrode of the power supply, the emitter of the third triode is electrically connected with one end of the seventh resistor, and the other end of the seventh resistor is grounded.
4. The novel circuit break point detection device according to claim 3, wherein the second resistor is a pull-up resistor of the first triode, the third resistor is a pull-up resistor of the second triode, and the fourth resistor is a pull-up resistor of the third triode;
the fifth resistor is a bias resistor of the first triode, the sixth resistor is a bias resistor of the second triode, and the seventh resistor is a bias resistor of the third triode.
5. The device for detecting a break point of a circuit according to claim 3, wherein the warning unit is a buzzer or a light emitting diode, one end of the warning unit is electrically connected to the collector of the third triode, and the other end of the warning unit is grounded.
6. The novel circuit breakpoint detection device according to claim 3, wherein the detection circuit comprises a single-chip microcomputer and a display;
the signal input end of the singlechip is electrically connected with the collector electrode of the third triode, and the signal output end of the singlechip is electrically connected with the display;
the singlechip is used for receiving the detection signal, then performing signal processing and sending the detection signal to the display to display the voltage parameter at the circuit break point, and the display surface of the display is arranged on the side wall of the test pencil body.
7. The novel circuit breakpoint detection device according to claim 1, wherein the induction antenna is in threaded connection with the test pencil body, and can be replaced in a high-frequency induction antenna, an intermediate-frequency induction antenna and a low-frequency induction antenna according to different frequencies of a circuit to be detected;
the low-frequency induction antenna adopts a winding built-in antenna, and the antenna is wound on a pen cap of the test pencil body so as to increase the length of the antenna;
the medium-frequency induction antenna adopts a design of a winding built-in antenna, the antenna is wound on a pen cap of the test pencil body, and the winding number of turns is small relative to the low-frequency induction antenna;
the high-frequency induction antenna adopts a design of an internal antenna, and the antenna is arranged inside the pen cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320879557.1U CN219758474U (en) | 2023-04-19 | 2023-04-19 | Novel circuit breakpoint detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320879557.1U CN219758474U (en) | 2023-04-19 | 2023-04-19 | Novel circuit breakpoint detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219758474U true CN219758474U (en) | 2023-09-26 |
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ID=88089806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320879557.1U Active CN219758474U (en) | 2023-04-19 | 2023-04-19 | Novel circuit breakpoint detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219758474U (en) |
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2023
- 2023-04-19 CN CN202320879557.1U patent/CN219758474U/en active Active
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