CN220983436U - Circuit detection circuit and device - Google Patents
Circuit detection circuit and device Download PDFInfo
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- CN220983436U CN220983436U CN202322733170.8U CN202322733170U CN220983436U CN 220983436 U CN220983436 U CN 220983436U CN 202322733170 U CN202322733170 U CN 202322733170U CN 220983436 U CN220983436 U CN 220983436U
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- 238000001514 detection method Methods 0.000 title claims abstract description 244
- 238000004891 communication Methods 0.000 claims description 22
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- 238000012937 correction Methods 0.000 abstract description 12
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Abstract
The application relates to the technical field of line detection, and discloses a line detection circuit and a device, wherein the circuit comprises: the device comprises a power module, a voltage dividing circuit, a detection display circuit, a connection plug-in interface and a detection switch; the power module is respectively connected with the voltage dividing circuit and the detection display circuit, the connecting plug-in interface is respectively connected with the voltage dividing circuit, the detection display circuit, the first end of the detection switch and the output interface of the circuit to be detected, and the second end of the detection switch is connected with the system power ground; the voltage dividing circuit is used for dividing the input voltage provided by the power supply module to obtain divided voltage when the line detection circuit is conducted, and the detection display circuit is used for detecting and displaying based on the divided voltage so as to realize line detection; the circuit detection circuit is conducted, wherein the circuit detection circuit comprises a first end of a detection switch connected with a second end of the detection switch, and a circuit to be detected is conducted. The application reduces the cost of the circuit correction difficulty.
Description
Technical Field
The present utility model relates to the field of circuit detection technologies, and in particular, to a circuit detection circuit and a device.
Background
With the development of CAN (Controller Area Network) communication technology, the detection requirement of users on CAN lines is increased.
The traditional line detection mode is to detect the installation of a terminal resistor in a line and the on-off of a wire harness through a voltmeter after the line is laid. The line detection mode has great defects, and the problem that the line detection mode can be used for detection after the line is laid is solved. That is, the line detection mode can detect after the line is laid, so that the line correction difficulty is high, and a new line detection circuit is needed to detect the line, so that the line correction difficulty is reduced.
Disclosure of utility model
The utility model mainly aims to provide a circuit detection circuit and a circuit detection device, and aims to provide a circuit detection circuit for detecting a circuit, so that the problem of circuit correction difficulty is reduced.
In order to achieve the above object, the present utility model provides a line detection circuit, which includes a power module, a voltage dividing circuit, a detection display circuit, a connection plug-in interface, and a detection switch;
The power module is respectively connected with the voltage dividing circuit and the detection display circuit, the connection plug-in interface is respectively connected with the voltage dividing circuit, the detection display circuit, the first end of the detection switch and the output interface of the circuit to be detected, and the second end of the detection switch is connected with the system power ground;
The voltage dividing circuit is used for dividing the input voltage provided by the power supply module to obtain divided voltage when the line detection circuit is conducted, and the detection display circuit is used for detecting and displaying based on the divided voltage so as to realize line detection; the circuit detection circuit is conducted, wherein the circuit detection circuit is conducted by the first end of the detection switch being connected with the second end of the detection switch, and the circuit to be detected is conducted.
Optionally, the voltage dividing circuit includes at least one voltage dividing resistor connected in turn, an input end of the voltage dividing resistor is connected with the power module, and an input end of the voltage dividing resistor is connected with the connection plug-in interface.
Optionally, the detection display circuit includes a buzzer and a detection indicator, the power module is respectively connected with the input end of the buzzer and the input end of the detection indicator, and the connection plug-in interface is respectively connected with the output end of the buzzer and the output end of the detection indicator.
Optionally, the power module includes a battery, and an output end of the battery is connected with an input end of the divider resistor, an input end of the buzzer, and an input end of the detection indicator lamp.
Optionally, the power module further includes a USB interface, where the USB interface is connected to the external charging device, the input end of the voltage dividing resistor, the input end of the buzzer, and the input end of the detection indicator respectively.
Optionally, the detection switch includes a four-pin key switch, a first communication pin of the four-pin key switch is connected with the connection plug-in unit in an interface manner, and a second communication pin of the four-pin key switch is connected with the system power supply ground.
In addition, the application also provides a circuit detection device, which comprises a shell structure and a circuit board, wherein the circuit detection circuit is arranged on the circuit board, and the circuit board is arranged in the shell structure.
Optionally, the housing structure includes an upper packaging housing and a lower housing, and the circuit board is disposed on one side of the lower housing and packaged in a first box body formed by the upper packaging housing and the lower housing.
Optionally, set up first through-hole, second through-hole and third through-hole on the last package plate of last encapsulation casing, set up fourth through-hole and fifth through-hole on the side package plate of last encapsulation casing, set up in the first through-hole detection switch, set up in the second through-hole detection pilot lamp in the detection display circuit, set up in the third through-hole buzzer in the detection display circuit, set up in the fourth through-hole connect the plug-in components interface, set up in the fifth through-hole USB interface in the power module, wherein, circuit detection device still includes the connecting wire, the one end of connecting wire with connect plug-in components interface connection, the other end of connecting wire passes through the fourth through-hole with circuit detection circuit connects.
Optionally, the shell structure further includes a battery box, a battery and a battery cover plate, one side of the battery box is arranged on the other side of the lower shell, the battery is arranged in the battery box and connected with the circuit detection circuit, and the battery cover plate is arranged on the other side of the battery box and encapsulates the battery box and the battery in a second box body formed by the upper encapsulation shell and the battery cover plate.
The application provides a circuit detection circuit, which comprises a power supply module, a voltage dividing circuit, a detection display circuit, a connection plug-in interface and a detection switch, wherein the power supply module is connected with the voltage dividing circuit; the power module is respectively connected with the voltage dividing circuit and the detection display circuit, the connection plug-in interface is respectively connected with the voltage dividing circuit, the detection display circuit, the first end of the detection switch and the output interface of the circuit to be detected, and the second end of the detection switch is connected with the system power ground; the voltage dividing circuit is used for dividing the input voltage provided by the power supply module to obtain divided voltage when the line detection circuit is conducted, and the detection display circuit is used for detecting and displaying based on the divided voltage so as to realize line detection; the circuit detection circuit is conducted, wherein the circuit detection circuit is conducted by the first end of the detection switch being connected with the second end of the detection switch, and the circuit to be detected is conducted. The first end of the detection switch is connected with the second end of the detection switch, and when the line to be detected is conducted (the connection of the detection switch is not required), the line to be detected is directly connected with the output interface of the line to be detected through the connection plug-in interface, the input voltage provided by the power module is divided by the voltage division circuit to obtain the divided voltage, and then the detection display of the detection display circuit can be determined based on the divided voltage, so that the phenomenon that the line can be detected only after the line is laid in the prior art, and the line correction difficulty is high is avoided, the first end of the detection switch is connected with the second end of the detection switch, and when the line to be detected is conducted (the connection of the detection switch is not required), the line to be detected is directly connected with the output interface of the line to be detected, and then the whole detection can be carried out after the problem is detected, and therefore the line correction difficulty can be reduced when the line is detected without the connection of the detection switch.
Drawings
FIG. 1 is a schematic diagram of a circuit detection circuit according to the present utility model;
FIG. 2 is a schematic diagram of a circuit connection of the circuit detection circuit of the present utility model;
FIG. 3 is a schematic diagram of another circuit connection of the circuit detection circuit of the present utility model;
FIG. 4 is a schematic diagram of a circuit testing device according to the present utility model;
fig. 5 is a schematic diagram of another structure of the circuit testing device of the present utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
For clarity and conciseness of the following description of the embodiments, a brief description of a line detection method is first given:
The existing line detection method is to directly establish the whole circuit and then electrify the circuit to detect the circuit by using a specific circuit detection device, such as an ammeter, a voltmeter and the like. Taking the detection of the CAN line in the heavy truck power exchange station as an example, because the electronic and electric parts in the heavy truck power exchange station adopt CAN communication, when the heavy truck power exchange station is installed, the wire harness in the power exchange station CAN be laid in the container in advance, and the problems of wire harness disconnection, terminal resistance detection and the like CAN exist after the laying is finished. If the failure is not detected in time, the problem of communication failure can occur after the installation of the parts is finished, and then the fault is checked, so that the workload required to be changed is large. The current practice in the industry is that the CAN communication wire harness CAN be found whether the function of the CAN communication wire harness is normal after the wire harness is laid and the parts are installed. Therefore, the detection mode at least has the problems that whether the CAN communication wire harness is installed or not is qualified and the detection is difficult, and when the CAN communication wire harness finds out that the function is invalid, the correction workload is large, and the omnibearing correction is required. The traditional voltmeter is complicated in operation steps, and consistency of operation of operators cannot be guaranteed. To explain the above problems in detail, if the CAN wire is installed, it cannot be determined whether the CAN wire is installed to be qualified because the CAN wire is not electrified during installation, and whether the CAN wire is installed to be qualified CAN be known only after the installation is completed, and the existing qualification detection mode is that the CAN wire is measured and determined through a voltmeter, and because the voltmeter determination mode needs to have a definite specification on the numerical value of the voltmeter, for example, CAN wires with different lengths correspond to different voltage values, and then a detection personnel needs to have experience on the whole detection specification. The present application has been made in view of the above problems.
The scheme provides a circuit detection circuit which comprises a power supply module, a voltage dividing circuit, a detection display circuit, a connection plug-in interface and a detection switch; the power module is respectively connected with the voltage dividing circuit and the detection display circuit, the connection plug-in interface is respectively connected with the voltage dividing circuit, the detection display circuit, the first end of the detection switch and the output interface of the circuit to be detected, and the second end of the detection switch is connected with the system power ground; the voltage dividing circuit is used for dividing the input voltage provided by the power supply module to obtain divided voltage when the line detection circuit is conducted, and the detection display circuit is used for detecting and displaying based on the divided voltage so as to realize line detection; the circuit detection circuit is conducted, wherein the circuit detection circuit is conducted by the first end of the detection switch being connected with the second end of the detection switch, and the circuit to be detected is conducted. The first end of the detection switch is connected with the second end of the detection switch, and when the line to be detected is conducted (the connection of the detection switch is not required), the line to be detected is directly connected with the output interface of the line to be detected through the connection plug-in interface, the input voltage provided by the power module is divided by the voltage division circuit to obtain the divided voltage, and then the detection display of the detection display circuit can be determined based on the divided voltage, so that the phenomenon that the line can be detected only after the line is laid in the prior art, and the line correction difficulty is high is avoided, the first end of the detection switch is connected with the second end of the detection switch, and when the line to be detected is conducted (the connection of the detection switch is not required), the line to be detected is directly connected with the output interface of the line to be detected, and then the whole detection can be carried out after the problem is detected, and therefore the line correction difficulty can be reduced when the line is detected without the connection of the detection switch.
The utility model provides a circuit detection circuit, referring to the structural schematic diagram of the circuit detection circuit of FIG. 1, the circuit detection circuit includes a power module 10, a voltage dividing circuit 20, a detection display circuit 30, a connection plug-in interface 40 and a detection switch 50;
The power module 10 is respectively connected with the voltage dividing circuit 20 and the detection display circuit 30, the connection plug-in interface 40 is respectively connected with the voltage dividing circuit 20, the detection display circuit 30, the first end of the detection switch 50 and the output interface 100 of the circuit to be detected, and the second end of the detection switch 50 is connected with the system power ground;
The voltage dividing circuit 20 is configured to divide an input voltage provided by the power module 10 to obtain a divided voltage when the line detection circuit is turned on, and the detection display circuit 30 is configured to perform detection display based on the divided voltage to implement line detection; the circuit detection circuit is turned on, which includes that a first end of the detection switch 50 is connected to a second end of the detection switch 50, and the circuit to be detected is turned on.
In this embodiment, the circuit detection circuit may be suitable for detecting various circuits, such as various connection circuits with a resistor, so that problems can be handled in time when the problems occur, and there is no need to perform problem rectification after the whole circuit is completely installed, and a large amount of rectification cost is required when the problem is detected after the whole circuit is completed, taking the existing house wiring as an example. Based on above circuit detection circuit CAN detect after having laid CAN communication pencil, need not install relevant spare part, discover the problem in advance, and then CAN reduce the whole degree of difficulty of circuit after the problem appears. The connection plug-in interface 40 is connected with the output interface 100 of the line to be detected, wherein the output interface 100 is fixed to the CAN communication line, and the output interface 100 of the line to be detected CAN be directly connected to the output end and the input end of the wire harness for other lines, so that the output interface 100 of the line to be detected is detected, and whether the terminal resistor is installed on the CAN communication wire harness CAN be determined as long as the line to be detected is conducted. The principle is that the circuit to be detected is conducted, the first end of the detection switch 50 is connected with the second end of the detection switch 50, and the whole circuit is in a communication state, so long as no terminal resistor is installed (two terminal resistors are connected in parallel under normal conditions), all the voltage of the power module 10 is loaded on the voltage dividing circuit 20, and the voltage dividing circuit 20 is connected in parallel with the detection display circuit 30, then the voltage of the detection display circuit 30 is all the voltage of the power module 10, and the divided voltage is the voltage of the output voltage of the power module 10 divided by the detection display circuit 30 or the voltage dividing circuit 20; when a terminal resistor is installed, a small part of the voltage of the power module 10 is loaded on the voltage dividing circuit 20, and the voltage dividing circuit 20 is connected in parallel with the detection display circuit 30, so that the voltage of the detection display circuit 30 is the small voltage of the power module 10, and a single terminal resistor is connected in series with more voltages of the circuit part; when two termination resistors are installed, most of the voltage of the power module 10 is loaded on the voltage dividing circuit 20, and the voltage dividing circuit 20 is connected in parallel to the detection display circuit 30, so that the voltage of the detection display circuit 30 is the large voltage of the power module 10, and the two termination resistors are connected in series with less voltage of the circuit. Furthermore, as long as various devices of the detection display circuit 30, such as a display lamp, work at a large voltage, the detection of the installation terminal resistor and the circuit breaking of the CAN communication line CAN be completed, and then the detection of the CAN communication line after all the installation is completed CAN be omitted, and the detection mode is simple, so that the risk of comprehensive improvement of the follow-up line CAN be greatly reduced.
The embodiment provides a circuit detection circuit, which comprises a power supply module, a voltage division circuit, a detection display circuit, a connection plug-in interface and a detection switch; the power module is respectively connected with the voltage dividing circuit and the detection display circuit, the connection plug-in interface is respectively connected with the voltage dividing circuit, the detection display circuit, the first end of the detection switch and the output interface of the circuit to be detected, and the second end of the detection switch is connected with the system power ground; the voltage dividing circuit is used for dividing the input voltage provided by the power supply module to obtain divided voltage when the line detection circuit is conducted, and the detection display circuit is used for detecting and displaying based on the divided voltage so as to realize line detection; the circuit detection circuit is conducted, wherein the circuit detection circuit is conducted by the first end of the detection switch being connected with the second end of the detection switch, and the circuit to be detected is conducted. The first end of the detection switch is connected with the second end of the detection switch, and when the line to be detected is conducted (the connection of the detection switch is not required), the line to be detected is directly connected with the output interface of the line to be detected through the connection plug-in interface, the input voltage provided by the power module is divided by the voltage division circuit to obtain the divided voltage, and then the detection display of the detection display circuit can be determined based on the divided voltage, so that the phenomenon that the line can be detected only after the line is laid in the prior art, and the line correction difficulty is high is avoided, the first end of the detection switch is connected with the second end of the detection switch, and when the line to be detected is conducted (the connection of the detection switch is not required), the line to be detected is directly connected with the output interface of the line to be detected, and then the whole detection can be carried out after the problem is detected, and therefore the line correction difficulty can be reduced when the line is detected without the connection of the detection switch.
Further, referring to fig. 2, fig. 2 is a schematic circuit connection diagram of the circuit detection circuit of the present utility model, and the voltage dividing circuit 20 includes at least one voltage dividing resistor R sequentially connected, wherein an input end of the voltage dividing resistor R is connected to the power module 10, and an input end of the voltage dividing resistor R is connected to the connection plug-in interface 40.
Specifically, the detection display circuit 30 includes a buzzer FMQ and a detection indicator D1, the power module 10 is respectively connected with an input end of the buzzer FMQ and an input end of the detection indicator D1, and the connection plug-in interface 40 is respectively connected with an output end of the buzzer FMQ and an output end of the detection indicator D1.
Specifically, the power module 10 includes a battery 11, and an output end of the battery 11 is connected with an input end of the voltage dividing resistor R, an input end of the buzzer FMQ, and an input end of the detection indicator lamp D1.
Specifically, the power module 10 further includes a USB interface 12, where the USB interface 12 is connected to an external charging device, an input end of the voltage dividing resistor R, an input end of the buzzer FMQ, and an input end of the detection indicator D1, respectively.
Specifically, the detection switch 50 includes a four-pin key switch, a first communication pin of the four-pin key switch is connected with the connection plug-in unit in an interface manner, and a second communication pin of the four-pin key switch is connected with the system power supply ground.
In this embodiment, the voltage dividing resistor may be designed according to the user requirement, for example, two voltage dividing resistors are designed in the figure, and the first resistor R1 and the second resistor R2 are further used to complete voltage division. The detection display circuit 30 includes a buzzer FMQ and a detection indicator lamp D1, and for example, the output voltage of the power module 10 is 3V, the divided voltage of the voltage dividing circuit 20 is 1V when one termination resistor is installed, the divided voltage of the voltage dividing circuit 20 is 2V when two termination resistors are installed, and then the buzzer FMQ and the detection indicator lamp D1 start to operate only when the divided voltage is 2V, at this time, a display lamp which is turned on only about 3V may be connected in parallel with the voltage dividing circuit 20, and when the display lamp displays that the termination resistor is not connected. It should be noted that, the buzzer FMQ and the detection indicator light D1 may be disposed at two ends of the connection plug-in interface 40, and at this time, an indicator light turned on at a low voltage is disposed at two ends of the connection plug-in interface 40, and when the display light shows that it is indicative of the terminal resistor being disconnected. Referring to fig. 3, fig. 3 is a schematic diagram of still another circuit connection of the line detection circuit of the present utility model. In order to avoid the problem of voltage drop of the battery 11 caused by use, the battery can be directly connected with the voltage through the USB interface 12, and can be a direct charger or a voltage generating circuit, such as a power circuit for generating a common 3V voltage, so as to avoid the problem of voltage drop of the battery 11, the detection switch 50 comprises a four-pin key switch and can also be other switches, the four-pin key switch is used for illustration, two pins which are communicated are used as output ends, and two pins which are communicated are used as input ends. At the same time, a detection circuit is also directly provided on the input side of the power supply module 10, since the working principle of the entire circuit is: the voltage dividing circuit 20 performs the voltage division to ensure the operation of the buzzer FMQ and the detection indicator lamp D1 in the detection display circuit 30, so that the setting of the total resistance value of the resistor of the voltage dividing circuit 20 and the stabilization of the output voltage of the power supply module 10 are also important. The display lamp which is lighted about 3V (the required input voltage is assumed to be 3V) can be designed, or a detection point between the input side of the power module 10 and the system power ground is arranged on a subsequent device, so that a user can use the display lamp after detection, and the accuracy of subsequent detection can be further ensured. And then CAN detect CAN communication line through circuit detection circuitry, and the detection mode is simple, and then the risk that the follow-up circuit was rectified comprehensively and is improved CAN greatly reduced.
In addition, the application also provides a circuit detection device, which comprises a shell structure and a circuit board 630, wherein the circuit board 630 is provided with the circuit detection circuit, and the circuit board is arranged in the shell structure.
In this embodiment, the circuit detection circuit is packaged as the circuit detection device, and fig. 4 is a schematic diagram of a circuit detection device according to the present utility model, and the circuit board 630 is disposed in the housing structure, so that the convenience of use is greatly improved while the circuit is detected.
Further, referring to fig. 5, fig. 5 is a schematic view of another structure of the circuit testing device of the present utility model, the housing structure includes an upper package housing 620 and a lower housing 640, and the circuit board 630 is disposed on one side of the lower housing 640 and is packaged in a first box formed by the upper package housing 620 and the lower housing 640.
Specifically, a first through hole 623, a second through hole 621 and a third through hole 622 are formed in an upper package board of the upper package case 620, a fourth through hole 624 and a fifth through hole 625 are formed in a side package board of the upper package case 620, the detection switch 50 is disposed in the first through hole 623, the detection indicator D1 in the detection display circuit 30 is disposed in the second through hole 621, the buzzer FMQ in the detection display circuit 30 is disposed in the third through hole 622, the connection plug-in interface 40 is disposed in the fourth through hole 624, the USB interface 12 in the power module is disposed in the fifth through hole 625, the circuit detection device further comprises a connection wire 610, one end of the connection wire 610 is connected with the connection plug-in interface 40, and the other end of the connection wire 610 is connected with the circuit detection circuit through the fourth through hole 624.
Specifically, the housing structure further includes a battery case 650, a battery 11, and a battery cover plate 660, where one side of the battery case 650 is disposed on the other side of the lower case 640 away from the circuit board 630, the battery 11 is disposed in the battery case 650 and connected to the line detection circuit, and the battery cover plate 660 is disposed on the other side of the battery case 650 and encapsulates the battery case 650 and the battery 11 in a second case body formed by the upper package case 620 and the battery cover plate 660.
In this embodiment, the whole line inspection device simplifies the operation steps, and only one connector interface 40 is connected, and inspection can be completed by one inspection switch 50. And then carry out the audible and visual instruction through buzzer FMQ and detection pilot lamp D1, demonstrate the testing result directly perceivedly. As can be seen from the figure, the key 51 is provided as a case of the detection switch 50 on the upper package plate of the upper package case 620 through the first through hole 623, and the second through hole 621 for displaying the detection indicator lamp D1 and the third through hole 622 for projecting the buzzer FMQ are provided, so that the buzzer FMQ and the detection indicator lamp D1 can be observed by pressing the key 51 by itself. Meanwhile, an indicator lamp for displaying the terminal resistance which is not connected and an indicator lamp for displaying the normal input voltage can be arranged, so that observation and detection can be intuitively performed. The fourth through hole 624 and the fifth through hole 625 are respectively used for communicating the connector interface 40 and the USB interface 12, so that the convenience of use can be greatly improved through the design of the connecting wire 610, and meanwhile, the selectivity of the input voltage can be improved through the design of the USB interface 12. It should be noted that the first through hole 623, the second through hole 621, the third through hole 622, the fourth through hole 624 and the fifth through hole 625 may be disposed on the same package board, which is not limited herein, and the design direction of the internal circuit board 630 may be arranged differently according to practical situations. The most straightforward way is to test the CAN harness directly through the circuit board 630.
The circuit detection device CAN be composed of a shell, a PCB circuit, a battery box, a battery and a connecting plug-in, wherein the battery provides power for the detection tool, when the connecting plug-in is plugged onto a CAN wire, a test key is pressed, if an indicator light is on, a buzzer sounds, and the CAN wire is well installed; when the test key is pressed, the indicator light is not on, the buzzer is silent, and the CAN line is indicated to be problematic in installation. And then CAN detect CAN communication line through circuit detection circuitry, and the detection mode is simple, and then the risk that the follow-up circuit was rectified comprehensively and is improved CAN greatly reduced.
The foregoing description of the preferred embodiments of the present application should not be construed as limiting the scope of the application, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).
Claims (10)
1. The circuit detection circuit is characterized by comprising a power supply module, a voltage dividing circuit, a detection display circuit, a connection plug-in interface and a detection switch;
The power module is respectively connected with the voltage dividing circuit and the detection display circuit, the connection plug-in interface is respectively connected with the voltage dividing circuit, the detection display circuit, the first end of the detection switch and the output interface of the circuit to be detected, and the second end of the detection switch is connected with the system power ground;
The voltage dividing circuit is used for dividing the input voltage provided by the power supply module to obtain divided voltage when the line detection circuit is conducted, and the detection display circuit is used for detecting and displaying based on the divided voltage so as to realize line detection; the circuit detection circuit is conducted, wherein the circuit detection circuit is conducted by the first end of the detection switch being connected with the second end of the detection switch, and the circuit to be detected is conducted.
2. The line detection circuit of claim 1, wherein the voltage divider circuit comprises at least one voltage divider resistor connected in sequence, an input terminal of the voltage divider resistor being connected to the power module, and an input terminal of the voltage divider resistor being interfaced with the connection plug-in.
3. The circuit detection circuit according to claim 2, wherein the detection display circuit comprises a buzzer and a detection indicator lamp, the power supply module is respectively connected with the input end of the buzzer and the input end of the detection indicator lamp, and the connection plug-in interface is respectively connected with the output end of the buzzer and the output end of the detection indicator lamp.
4. A line detection circuit as claimed in claim 3, wherein the power supply module comprises a battery, the output of which is connected to the input of the divider resistor, the input of the buzzer and the input of the detection indicator light.
5. The line detection circuit of claim 4, wherein the power module further comprises a USB interface, the USB interface being connected to an external charging device, an input of a divider resistor, an input of the buzzer, and an input of the detection indicator, respectively.
6. The circuit detection circuit of claim 5, wherein the detection switch comprises a four-pin key switch, a first communication pin of the four-pin key switch being interfaced with the connection plug-in, a second communication pin of the four-pin key switch being electrically connected to the system power ground.
7. A line testing device comprising a housing structure and a circuit board on which the line testing circuit of any one of claims 1 to 6 is disposed and which is disposed within the housing structure.
8. The line testing apparatus of claim 7, wherein the housing structure includes an upper package housing and a lower housing, and the circuit board is disposed on one side of the lower housing and is enclosed in a first case formed by the upper package housing and the lower housing.
9. The circuit inspection device of claim 8, wherein a first through hole, a second through hole and a third through hole are formed in an upper package plate of the upper package housing, a fourth through hole and a fifth through hole are formed in a side package plate of the upper package housing, the inspection switch is disposed in the first through hole, the inspection indicator light in the inspection display circuit is disposed in the second through hole, the buzzer in the inspection display circuit is disposed in the third through hole, the connection plug-in interface is disposed in the fourth through hole, the USB interface in the power module is disposed in the fifth through hole, and one end of the connection wire is connected with the connection plug-in interface, and the other end of the connection wire is connected with the circuit inspection circuit through the fourth through hole.
10. The line testing device of claim 9, wherein said housing structure further comprises a battery compartment, a battery and a battery cover plate, said battery compartment being disposed on one side of said lower housing and said battery being disposed within said battery compartment and connected to said line testing circuit, said battery cover plate being disposed on the other side of said battery compartment and enclosing said battery compartment and said battery within a second compartment formed by said upper enclosure and said battery cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322733170.8U CN220983436U (en) | 2023-10-11 | 2023-10-11 | Circuit detection circuit and device |
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| CN202322733170.8U CN220983436U (en) | 2023-10-11 | 2023-10-11 | Circuit detection circuit and device |
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