CN116520201A - Polarity detection device - Google Patents

Abstract

The application provides a polarity detection device relates to circuit test technical field, and polarity detection device includes: the device comprises a detection component, a selection component and an indication component; the detection component is connected with the selection component and is used for contacting the point to be tested to acquire a test signal; the selection component is connected with the indication component; the selection component is used for transmitting a test signal with the indication component to form an electric loop; the indicating component is used for outputting indicating signals representing the measured time among a plurality of points to be measured based on the test signals; wherein, the indication signals of different polarities are different among a plurality of points to be measured. According to the method and the device, the selection component and the indication component are arranged, so that the indication signals with different polarities are output according to the test signals during detection, the user can be prompted without observing the apparent values of the table, the method and the device can be applied to test scenes which cannot be observed in various corners, narrow areas and the like, the accuracy of polarity detection is effectively improved, and the safety of the tested instrument is also improved.

Description

Polarity detection device

Technical Field

The application relates to the technical field of circuit testing, in particular to a polarity detection device.

Background

When electrical equipment is tested, the measured direct current voltage can be directly measured through a universal meter, and the electrode of the measurement point position can be determined according to the test value. When the digital multimeter is used for measuring and judging the point electrode to be measured, the point electrode to be measured needs to be judged by observing the positive and negative signs displayed by the digital display meter, and the pointer multimeter needs to be judged by observing the deflection of the pointer. Therefore, in the current test mode, no matter the digital multimeter or the pointer multimeter is adopted, a tester needs to clearly see the apparent numerical value during the test, and if the apparent numerical value cannot be seen clearly, the electrode of the point to be tested cannot be accurately judged.

However, in some test scenarios, the non-standard equipment for testing is small in space and many high-value instrumentation is deployed. The polarity of direct current of all reserved points needs to be confirmed when the equipment is tested, and if the polarity is reversed, the instrument is burnt out, so that great loss is caused. Because of limited space, the multimeter body is often placed at no place or at a corner position, and positive and negative marks before the numerical value of the meter are difficult to see during testing, so that the direct current polarity test has poor readability and cannot be safely and efficiently detected.

Disclosure of Invention

In view of the foregoing, an object of the embodiments of the present application is to provide a polarity detection device, so as to solve the problem that the polarity detection result cannot be obtained effectively in the prior art.

In order to solve the above-mentioned problem, an embodiment of the present application provides a polarity detection apparatus, including: the device comprises a detection component, a selection component and an indication component;

the detection component is connected with the selection component and is used for contacting the point to be tested to acquire a test signal;

the selection component is connected with the indication component;

the selection component is used for transmitting the test signal with the indication component to form an electric loop;

the indicating component is used for outputting indicating signals representing the measured time among a plurality of points to be measured based on the test signals; wherein the indication signals with different polarities among the points to be measured are different.

In the implementation process, through setting up selection component and instruction subassembly, can form different electric loop according to the different test signals when detecting to the instruction signal of different polarity when being surveyed between the representation test point position is based on different electric loop output, and sends corresponding instruction signal to the user. The polarity detection device provided by the application is free from space limitation when detecting the polarity, the polarity between the measured points can be obtained through corresponding indication signals without detecting through observing the apparent numerical values, and the polarity detection device can be suitable for test scenes which cannot be observed in various corners, narrow areas and the like, so that the efficiency and the accuracy in polarity detection are effectively improved, and the safety of the detected instrument and equipment is further improved.

Optionally, the indicating assembly includes: a forward direction indication assembly and a reverse direction indication assembly; the test signal includes: a forward test signal and a reverse test signal; the indication signal includes: a first indication signal and a second indication signal representing different polarities; the selection component comprises: a first selection switch and a second selection switch of the polarity test gear;

if the first selection switch is connected with the forward direction indication component, the first selection switch is used for sending the forward direction test signal to the forward direction indication component to form an electric loop, and the forward direction indication component is used for outputting the first indication signal based on the forward direction test signal;

the second selection switch is connected with the reverse indication component, the detection component is used for sending the reverse test signal to the reverse indication component, the selection component is used for receiving the reverse test signal output by the reverse indication component to form an electric loop, and the reverse indication component is used for outputting a second indication signal based on the reverse test signal.

In the implementation process, in order to characterize different polarities, the forward direction indication component and the reverse direction indication component with different structures can be arranged in the indication component, and the selection component can select a corresponding selection switch according to the type of the test signal so as to be connected with the forward direction indication component or the reverse direction indication component, so that different electrical loops are respectively formed according to the forward direction test signal and the reverse direction test signal, and different types of indication signals are generated. The corresponding indication components can be selected according to the types of the test signals to form corresponding electric loops, so that the corresponding polarities of the points to be tested are represented by the different types of the indication signals, the efficiency and the accuracy in polarity detection are effectively improved, and the acquirability of the detection results is improved, so that the method is suitable for various test scenes.

Optionally, the forward direction indication assembly includes: a first buzzer and a first forward diode;

the first buzzer is connected with the first forward diode, the first buzzer is used for sending a first prompting sound of a first type to serve as the first indication signal based on the received forward test signal, and the first forward diode is used for sending the forward test signal to the detection component so as to form an electric loop.

In the implementation process, the first buzzer with the prompt tone and the first forward diode in the corresponding direction are arranged to generate the first prompt tone of the first type according to the received forward test signal as the corresponding first indication signal, so that the detection result of polarity detection can be indicated in terms of sound, a user can obtain the corresponding detection result, and the availability of the detection result of polarity detection is effectively improved.

Optionally, the forward direction indication assembly includes: a first indicator light and a second forward diode;

the first indicator light is connected with the second forward diode, the first indicator light is used for sending first prompt light with a first color based on the received forward test signal to serve as the first indicator signal, and the second forward diode is used for sending the forward test signal to the detection assembly to form an electric loop.

In the implementation process, the first indicator light with the bright light and the second forward diode with the corresponding direction are arranged, so that the first prompt light with the first color is generated according to the received forward test signal to serve as the corresponding first indicator signal, the detection result of polarity detection can be indicated from the bright light aspect, the user can obtain the corresponding detection result, and the availability of the detection result of polarity detection is effectively improved.

Optionally, the reverse direction indication assembly includes: a second buzzer and a first reverse diode;

the second buzzer is connected with the first reverse diode, the second buzzer is used for sending a second prompting sound of a second type to serve as the second indicating signal based on the received reverse test signal, and the first reverse diode is used for sending the reverse test signal to the selection component so as to form an electric loop.

In the implementation process, the second buzzer with the prompt tone and the second reverse diode in the corresponding direction are arranged to generate the second prompt tone of the second type according to the received forward test signal as the corresponding second indication signal, so that the detection result of polarity detection can be indicated from the aspect of sound, a user can obtain the corresponding detection result, and the availability of the detection result of polarity detection is effectively improved.

Optionally, the reverse direction indication assembly includes: a second indicator light and a second reverse diode;

the second indicator light is connected with the second reverse diode, the second indicator light is used for sending second prompt light with a second color to serve as the second indicator signal based on the received reverse test signal, and the second reverse diode is used for sending the reverse test signal to the selection component to form an electric loop.

In the implementation process, the second indicator light with the bright light and the second reverse diode with the corresponding direction are arranged, so that the second prompting light with the second color is generated according to the received forward test signal to serve as the corresponding second indicator signal, the detection result of polarity detection can be indicated from the bright light aspect, so that a user can obtain the corresponding detection result, and the availability of the detection result of polarity detection is effectively improved.

Optionally, the polarity detection device further includes: a plurality of gear components of different electrical signal thresholds;

the first selector switch and the second selector switch are connected with the forward direction indication assembly and the reverse direction indication assembly through a plurality of gear assemblies, and the gear assemblies are used for selecting corresponding electric signal thresholds to test and transmit the test signals.

In the implementation process, in order to test the instruments and equipment with various different electrical signal thresholds, a plurality of different gear components can be arranged to connect a corresponding plurality of selection switches and indication components. The gear detection device can select corresponding gears for detection according to the actual conditions of the instrument and equipment, is suitable for detecting various instruments and equipment with different types and different models, effectively expands the application range of detection, and reduces the adverse effects on polarity detection and instrument and equipment caused by the fact that the threshold value of the electric signal is not consistent with the threshold value of the electric signal.

Optionally, the gear assembly includes a first potentiometer and a third forward diode;

the first potentiometer is connected with the first selection switch and is used for performing potential processing on the forward test signal sent by the first selection switch;

the third forward diode is configured to connect the first potentiometer and the forward indication component to send the forward test signal to the forward indication component.

In the above implementation process, the gear component connected with the forward direction indicating component may include a first potentiometer and a third forward direction diode, so as to connect with the first selection switch to obtain a forward direction test signal, and send the forward direction test signal to the forward direction indicating component after performing potential processing on the forward direction test signal, so as to form a corresponding electrical loop. The gear component with the corresponding trend can be set to process and transmit the forward test signal, so that the effectiveness of the forward test signal to be tested is effectively improved.

Optionally, the gear assembly includes a second potentiometer and a third reverse diode;

the third reverse diode is used for connecting the reverse indication assembly and the second potentiometer so as to receive the reverse test signal sent by the reverse indication assembly;

the second potentiometer is connected with the second selection switch and is used for performing potential processing on the received reverse test signal and sending the reverse test signal to the second selection switch.

In the above implementation process, the gear component connected with the reverse indication component may include a second potentiometer and a third reverse diode, so as to connect the reverse indication component to obtain a reverse test signal, and send the reverse test signal to the second selection switch after performing potential processing on the reverse test signal, so as to form a corresponding electrical loop. The gear component with the corresponding trend can be set to process and transmit the reverse test signal, so that the effectiveness of the reverse test signal to be tested is effectively improved.

Optionally, the detection assembly includes: the first detection pen and the second detection pen; a test meter is connected between the first detection pen and the second detection pen; the selection component comprises a third selection switch of a numerical test file;

the first detection pen is used for contacting a first to-be-detected point, and the second detection pen is used for contacting a second to-be-detected point;

if the numerical test gear is selected, the third selection switch is used for disconnecting the connection between the detection component and the indication component;

the first probe pen and the second probe pen are used for forming an electric loop, and the test meter is used for testing the signal value of the test signal.

In the implementation process, the polarity detection assembly provided by the application can also test the signal value of the tested electric signal. The corresponding test meter is connected between the two detection pens, and a third selection switch for disconnecting the connection between the detection assembly and the indication assembly is arranged, so that an electric loop is formed by the two detection pens, and the signal value between the points to be tested is measured by the test meter. The test requirement of a user on the electric signal value can be met, and the method is suitable for more test scenes.

In summary, the embodiment of the application provides a polarity detection device, through setting up selection component and indicating component to according to the pilot signal of the different polarity of test signal output characterization when detecting, need not to detect through observing apparent numerical value during the detection, can be applicable to the test scene that can't observe such as multiple corner, narrow and small region, thereby efficiency and the accuracy when having improved the polarity effectively, further improved the security of the instrument and equipment of being surveyed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a polarity detection device according to an embodiment of the present application;

fig. 2 is a detailed structural schematic diagram of a polarity detection device according to an embodiment of the present application.

Icon: 100-detecting assembly; 110-a first stylus; 120-a second stylus; 130-test table; 200-selecting a component; 210-a first selection switch; 220-a second selection switch; 230-a third selection switch; 300-indicating assembly; 310-a forward indication component; 311-a first buzzer; 312-a first forward diode; 313-a first indicator light; 314-a second forward diode; 320-a reverse direction indication component; 321-a second buzzer; 322-a first reverse diode; 323-a second indicator light; 324-a second reverse diode; 400-gear assembly; 411-first potentiometer; 412-a third forward diode; 421-a second potentiometer; 422-third reverse diode.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the embodiments of the present application.

The electrical equipment control circuit (electrical equipment control circuit in modern semiconductor industry) generally adopts a direct current power supply, and the voltages of various input and output points of the direct current power supply are generally fixed values (for example, 5V, 12V, 24V and the like). However, due to the unidirectional nature of the dc power supply, once the device is not aware of the point reversal during the wiring process, it jumps to the power when it is light and burns out the line when it is heavy. Therefore, testing of the spot electrodes of the electrical devices is very important. When the current multimeter is used for testing, the display emphasis is usually placed on the display of the voltage, and the distinction of the electrodes is only expressed according to the positive and negative signs before the numerical value is displayed, for example, when the digital multimeter is used for measuring and judging the electrode of the point to be tested, the judgment is needed by observing the positive and negative signs displayed by the digital display meter, and the pointer multimeter is needed to observe the deflection of the pointer for judgment. The expression mode of the digital multimeter or the pointer multimeter is single and is easy to ignore, a tester is required to clearly see the apparent numerical value during testing, and if the apparent numerical value cannot be seen clearly, the electrode of the point to be tested cannot be accurately judged.

However, in some scenes, the test nonstandard equipment has smaller space, and because of the limited space, the multimeter body is often placed in no place or in a corner position, and positive and negative marks before the apparent numerical value are difficult to see during the test, so that the readability of the direct current polarity test is poor, and the safe and efficient detection cannot be performed.

In order to solve the above-mentioned problems, please refer to fig. 1, fig. 1 is a schematic structural diagram of a polarity detection device according to an embodiment of the present application. The polarity detection device includes: a detection component 100, a selection component 200, and an indication component 300.

Alternatively, the detection assembly 100 may include a device with a detection function, such as a detection pen, and the selection assembly 200 may include an assembly with multiple selection switches, such as multiple poles and multiple throws, capable of connecting different circuits, and the indication assembly 300 may include a related device with an acousto-optic prompt function.

The detecting assembly 100 is connected with the selecting assembly 200, and the detecting assembly 100 is used for contacting a point to be detected, wherein the point to be detected is a point to be detected in the detected instrument or circuit, so as to obtain a test signal between two or more points to be detected through the contact between the polarity detecting device and the point to be detected. The selection component 200 is connected with the indication component 300, the selection component 200 is used for transmitting test signals with the indication component 300 to form an electrical loop, and the indication component 300 is used for outputting indication signals representing measured time among a plurality of points to be tested based on the test signals. In order to distinguish between the plurality of points to be measured, the indication signals corresponding to the different polarities are also different.

Alternatively, the detecting assembly 100 may include a device with a detecting function, such as a detecting pen, and the selecting assembly 200 may include an assembly with a plurality of selecting switches, such as multiple poles and multiple throws, capable of connecting different circuits, and the indicating assembly 300 may include a relevant device with an acousto-optic indicating function, so as to emit various indication signals, such as an audible indication, a bright indication, and the like.

Optionally, for safe use of the polarity detection device, a fuse may be connected between the detection assembly 100 and the selection assembly 200 to reduce adverse effects caused by short circuits and the like.

In the embodiment shown in fig. 1, by arranging the selection component 200 and the indication component 300, different electrical loops can be formed according to different test signals during detection, so that indication signals representing different polarities during detection between points to be detected are output based on the different electrical loops. The polarity detection method is free from space limitation, does not need to observe the apparent numerical value of the meter for detection, and can be suitable for test scenes which cannot be observed in various corners, narrow areas and the like, so that the efficiency and the accuracy in the polarity detection are effectively improved, and the safety of the detected instrument and equipment is further improved.

Optionally, referring to fig. 2, fig. 2 is a detailed structural schematic diagram of a polarity detection device according to an embodiment of the present application.

Optionally, the probe assembly 100 may include a first probe 110 and a second probe 120. The first stylus 110 may be a red stylus and the second stylus 120 may be a black stylus. In fig. 2 of the present application, only one structure that the first probe pen 110 is connected to the selection switch and the second probe pen 120 is connected to the indication assembly 300 is shown, and other modes may be adopted for connection, which will not be described again.

Since the polarities of the points to be tested measured by each probe pen are different, the test signal may further include: in the embodiment shown in fig. 2, the forward test signal is a signal sent from the first probe pen 110 when the point to be tested detected by the first probe pen 110 is positive, the current is sent from the first probe pen 110 when the point to be tested detected by the second probe pen 120 is negative, the reverse test signal is a signal sent from the second probe pen 120 when the point to be tested detected by the second probe pen 120 is positive, and the current is sent from the second probe pen 120 when the point to be tested detected by the first probe pen 110 is negative.

Different electrical loops may be formed for the test signals in different directions to enable the indicator assembly 300 to characterize different polarities. Thus, for characterization of different polarities, the indicating assembly 300 may further include: a forward indication component 310 and a reverse indication component 320. Accordingly, to connect different indication assemblies 300; the selection component 200 can further include: a first selection switch 210 and a second selection switch 220 of the polarity test gear. The indication signal may further include: a first indicator signal and a second indicator signal representing different polarities.

For detecting the values of the voltages or currents, the first probe pen 110 and the second probe pen 120 may be further connected with a test meter 130, where the test meter 130 may be a voltmeter or an ammeter with a corresponding measuring range, for example, a voltmeter with a measuring range of ±100deg.V, and the selection assembly 200 may further include a third selection switch 230 of the value test range, where the third selection switch 230 is neutral, and no circuit is configured thereafter. The first probe pen 110 is used for contacting a first point to be tested, the second probe pen 120 is used for contacting a second point to be tested, if a numerical test file is selected, the third selection switch 230 is used for disconnecting the connection between the probe assembly 100 and the indication assembly 300, the first probe pen 110 and the second probe pen 120 are used for forming an electrical loop, and the test meter 130 is used for testing signal values such as a voltage value or a current value of a test signal. For example, during testing, the selection component 200 may be adjusted to the third switch component 230, two probes are respectively inserted into two points to be tested, and after the pointer is stable, the voltage value between the two points can be measured by observing the apparent value.

Optionally, when the detecting component 100 acquires the forward test signal, the detecting component 100 is connected to the forward indication component 310 through the first selection switch 210, the first selection switch 210 is configured to send the forward test signal to the forward indication component 310 to form an electrical loop, and the forward indication component 310 is configured to output the first indication signal based on the forward test signal.

Optionally, when the detecting component 100 acquires the reverse test signal, the detecting component 100 is connected to the reverse direction indicating component 320 through the second selection switch 220, the detecting component 100 is configured to send the reverse test signal to the reverse direction indicating component 320, the selection component 200 is configured to receive the reverse test signal output by the reverse direction indicating component 320 to form an electrical loop, and the reverse direction indicating component 320 is configured to output the second indication signal based on the reverse direction test signal.

Therefore, through the above structure, the corresponding indication assembly 300 can be selected to form a corresponding electrical loop according to the type of the test signal, so that the corresponding polarities of the points to be tested are represented by the different types of the indication signals, the efficiency and accuracy in polarity detection are effectively improved, and the availability of the detection result is improved, so that the method is suitable for various test scenes.

It should be noted that, since the first indication signal and the second indication signal respectively represent different polarities, the first indication signal and the second indication signal may be the same type but different signals, for example, the first indication signal and the second indication signal are both sound signals, when the first indication signal is a long-ringing signal, the second indication signal is a discontinuous-ringing signal, or the first indication signal and the second indication signal are both bright signals, but the first indication signal is a green light signal, and the second indication signal is a red light signal; alternatively, the first indication signal and the second indication signal are two different types of signals, for example, the first indication signal is a sound signal, the second indication signal is a bright light signal, or the first indication signal is a bright light signal, the second indication signal is a sound signal, or the like.

Optionally, to turn on the signal to implement the polarity indicating function, the forward indicating component 310 may include: a first buzzer 311 and a first forward diode 312. The first buzzer 311 is connected to a first forward diode 312, the first buzzer 311 is configured to send a first alert tone of a first type as a first indication signal based on the received forward test signal, and the first forward diode 312 is configured to send the forward test signal to the probe assembly 100 to form an electrical loop.

The first buzzer 311 with the alert tone and the first forward diode 312 in the corresponding direction are provided to generate the first alert tone of the first type as the corresponding first indication signal according to the received forward test signal, so that the detection result of the polarity detection can be indicated from the aspect of sound, so that the user can obtain the corresponding detection result, and the availability of the detection result of the polarity detection is effectively improved. For example, the first type may be a type of sound signal, such as a long sound or a regular intermittent sound, and the corresponding first alert sound is a long sound or an intermittent sound.

Optionally, to turn on the signal to implement the polarity indicating function, the forward indicating component 310 may further include: a first indicator light 313 and a second forward diode 314. The first indicator light 313 is connected to the second forward diode 314, the first indicator light 313 is configured to emit a first indicator light of a first color as a first indicator signal based on the received forward test signal, and the second forward diode 314 is configured to send the forward test signal to the detection assembly 100 to form an electrical circuit.

The first indicator 313 with bright light and the second forward diode 314 with corresponding directions are provided to generate the first prompting light with the first color according to the received forward test signal as the corresponding first indicator signal, so that the detection result of polarity detection can be indicated from the bright light aspect, so that the user can obtain the corresponding detection result, and the availability of the detection result of polarity detection is effectively improved. For example, the first color may be a color of a bright light signal, such as red or green, the corresponding first cue light being a red light signal or green light signal, etc.

The forward direction indication assembly 310 may include the above two structures, or may include any one of the above two structures.

Optionally, to turn on the signal to implement the polarity indicating function, the reverse indicating component 320 may include: a second buzzer 321 and a first reverse diode 322. The second buzzer 321 is connected to the first reverse diode 322, the second buzzer 321 is configured to send a second alert tone of a second type as a second indication signal based on the received reverse test signal, and the first reverse diode 322 is configured to send the reverse test signal to the selection component 200 to form an electrical circuit.

The second buzzer 321 with the alert tone and the second reverse diode 324 with the corresponding direction are provided to generate the second alert tone with the second type as the corresponding second indication signal according to the received forward test signal, so that the detection result of the polarity detection can be indicated from the aspect of sound, so that the user can obtain the corresponding detection result, and the availability of the detection result of the polarity detection is effectively improved. For example, the second type may be a different sound signal type than the first type, e.g. the first type is long chirp, then the second type is regular intermittent chirp, and the corresponding second alert tone is intermittent chirp.

Optionally, to turn on the signal to implement the polarity indicating function, the reverse indicating component 320 may further include: a second indicator light 323 and a second reverse diode 324. The second indicator light 323 is connected to the second reverse diode 324, the second indicator light 323 is configured to emit a second indicator light of a second color based on the received reverse test signal, and the second reverse diode 324 is configured to send the reverse test signal to the selection component 200 to form an electrical circuit.

The second indicator light 323 with bright light and the second reverse diode 324 with the corresponding direction are provided to generate the second prompting light with the second color according to the received forward test signal as the corresponding second indicator signal, so that the detection result of polarity detection can be indicated from the bright light aspect, so that a user can obtain the corresponding detection result, and the availability of the detection result of polarity detection is effectively improved. For example, the second color may be a color of a bright light signal different from the first color, e.g., when the first color is green, then the second color may be red, and the corresponding second cue light is a red light signal.

The reverse direction indicating assembly 320 may include the above two structures, or may include any one of the above two structures.

Optionally, in order to test the instrument device with a plurality of different electrical signal thresholds, the polarity detection apparatus may further include: a plurality of gear assemblies 400 of different electrical signal thresholds.

Wherein the first selector switch 210 and the second selector switch 220 are connected to the forward direction indication assembly 310 and the reverse direction indication assembly 320 through a plurality of gear assemblies 400, and the gear assemblies 400 are used for selecting corresponding electrical signal thresholds to test and transmit test signals. For example, a gear assembly 400 with a 12V dc voltage and a gear assembly 400 with a 24V dc voltage may be respectively provided to test the points to be tested of the instrument and the device with different voltage thresholds. The gear detection device can select corresponding gears for detection according to the actual conditions of the instrument and equipment, is suitable for detecting various instruments and equipment with different types and different models, effectively expands the application range of detection, and reduces the adverse effects on polarity detection and instrument and equipment caused by the fact that the threshold value of the electric signal is not consistent with the threshold value of the electric signal.

Optionally, in a configuration in which the forward indicating assembly 310 is connected, the gear assembly 400 may include a first potentiometer 411 and a third forward diode 412; the first potentiometer 411 is connected to the first selection switch 210, and the first potentiometer 411 is used for performing potential processing on the forward test signal sent by the first selection switch 210; a third forward diode 412 is used to connect the first potentiometer 411 and the forward indicating component 310 to send a forward test signal to the forward indicating component 310. The gear component 400 with corresponding trend can be set to process and transmit the forward test signal, so that the effectiveness of the forward test signal to be tested is effectively improved.

Alternatively, since the voltage threshold value corresponding to each gear assembly 400 is different, a plurality of sets of gear assemblies 400 including the first potentiometer 411 and the third forward diode 412 may be provided, for example, two sets of gear assemblies 400 including the first potentiometer 411 and the third forward diode 412 and respectively connected to the first buzzer 311 and the first indicator lamp 313 are shown in fig. 2, and the voltage threshold values of 12V and 24V can be detected, respectively.

Taking the gear component 400 with the voltage threshold of 24V as an example, when the forward test signal is acquired, current can flow from the first probe pen 110 of the positive electrode through the fuse, the test meter 130, the first selection switch 210, the first potentiometer 411, the third forward diode 412, the first buzzer 311 and/or the first indicator light 313, the first forward diode 312 and/or the second forward diode 314, and then finally flow to the second probe pen 120 of the negative electrode to form an electrical circuit. If the operating voltage of the point to be tested reaches 24V, the voltmeter may read the positive voltage value, the first buzzer 311 may emit a first alert sound of the first type, for example, a continuous sound, or the first indicator 313 may emit a first alert light of the first color, for example, a green light signal. If the operating voltage of the point to be tested does not reach 24V or does not reach 24V, the first buzzer 311 and/or the first indicator light 313 will not operate. In the circuit of the reverse direction indicating component 320, the first reverse diode 322 and/or the second reverse diode 324 are installed reversely, so that the circuit is not conducted, and the current cannot pass through the circuit, so that an electric loop cannot be formed.

Optionally, in a configuration coupled to the reverse indicating assembly 320, the gear assembly 400 may include a second potentiometer 421 and a third reverse diode 422. The third reverse diode 422 is used for connecting the reverse direction indicating component 320 and the second potentiometer 421 to receive a reverse test signal sent by the reverse direction indicating component 320; the second potentiometer 421 is connected to the second selection switch 220, and the second potentiometer 421 is configured to perform a potential processing on the received reverse test signal and send the reverse test signal to the second selection switch 220. The gear component 400 with corresponding trend can be set to process and transmit the reverse test signal, so that the effectiveness of the reverse test signal to be tested is effectively improved.

Alternatively, since the voltage threshold value corresponding to each gear assembly 400 is different, a plurality of sets of gear assemblies 400 including the second potentiometer 421 and the third inverting diode 422 may be provided, respectively, for example, two sets of gear assemblies 400 including the second potentiometer 421 and the third inverting diode 422 and respectively connected to the second buzzer 321 and the second indicator lamp 323 are shown in fig. 2, and the voltage threshold values of 12V and 24V can be detected, respectively.

Taking the gear component 400 with the voltage threshold of 24V as an example, when the reverse test signal is acquired, the current can flow from the second probe pen 120 at the positive electrode through the voltmeter, the first reverse diode 322 and/or the second reverse diode 324, the second buzzer 321 and/or the second indicator 323, the third reverse diode 422, the second potentiometer 421, the second selection switch 220 and the fuse, and then finally flow to the first probe pen 110 at the negative electrode to form an electrical loop. If the operating voltage of the to-be-tested point reaches 24V, the voltmeter can read the negative voltage value, and the second buzzer 321 can emit a second prompting sound of a second type, for example, continuous ringing, or the second indicator 323 can emit a second prompting light of a second color, for example, red light signal. If the operating voltage of the point to be tested does not reach 24V or does not reach 24V, the second buzzer 321 and/or the second indicator 323 will not operate. In the circuit of the forward direction indicating component 310, the first forward diode 312 and/or the second forward diode 314 are/is installed in the forward direction, so that the circuit is not connected, and the current cannot pass through the circuit, so that an electrical loop cannot be formed.

It should be noted that, in order to test more points with different voltage thresholds, more reserved selection switches and gears may be provided in the selection assembly 200 and the gear assembly 400 for expanding the voltage levels that are increased subsequently.

Optionally, in the above embodiment provided in the present application, if a long-ringing prompt tone is heard or a green indicator is observed to be on, it indicates that the detected point of the first probe 110 is a dc input/output positive electrode, and the detected point of the second probe 120 is a dc input/output negative electrode. If the intermittent prompt tone is heard or the red indicator light is observed to be on, it indicates that the detected point of the first probe pen 110 is the negative dc input/output electrode, and the detected point of the second probe pen 120 is the positive dc input/output electrode.

Therefore, the polarity detection device provided by the application is added with an audible and visual alarm function, so that a user is reminded of the user through different audible and visual indication signals without depending on the observation meter body when the user confirms the electrode of the direct current input/output point. If no voltage exists or the voltage is insufficient, audible and visual alarm cannot be generated, and at the moment, a user can check the actual voltage value through the built-in voltmeter. The voltage and the electrode of the point to be tested can be more accurately confirmed whether to be correct or not, the operation flow can be simplified, and the operation of a user is facilitated. When the device is used, the device does not need to be placed at an observable position, is suitable for various environments which are not suitable for observation, such as dark or narrow space environments, and can enable a user to quickly, accurately and conveniently acquire effective polarity conditions.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. The apparatus embodiments described above are merely illustrative, for example, block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of devices according to various embodiments of the present application. In this regard, each block in the block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams, and combinations of blocks in the block diagrams, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote 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.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Claims (10)

1. A polarity detection apparatus, characterized in that the polarity detection apparatus comprises: the device comprises a detection component, a selection component and an indication component;

the detection component is connected with the selection component and is used for contacting the point to be tested to acquire a test signal;

the selection component is connected with the indication component;

the selection component is used for transmitting the test signal with the indication component to form an electric loop;

the indicating component is used for outputting indicating signals representing the measured time among a plurality of points to be measured based on the test signals; wherein the indication signals with different polarities among the points to be measured are different.

2. The polarity detection device of claim 1, wherein the indication assembly comprises: a forward direction indication assembly and a reverse direction indication assembly; the test signal includes: a forward test signal and a reverse test signal; the indication signal includes: a first indication signal and a second indication signal representing different polarities; the selection component comprises: a first selection switch and a second selection switch of the polarity test gear;

if the first selection switch is connected with the forward direction indication component, the first selection switch is used for sending the forward direction test signal to the forward direction indication component to form an electric loop, and the forward direction indication component is used for outputting the first indication signal based on the forward direction test signal;

the second selection switch is connected with the reverse indication component, the detection component is used for sending the reverse test signal to the reverse indication component, the selection component is used for receiving the reverse test signal output by the reverse indication component to form an electric loop, and the reverse indication component is used for outputting a second indication signal based on the reverse test signal.

3. The polarity detection apparatus of claim 2, wherein the forward direction indication assembly comprises: a first buzzer and a first forward diode;

the first buzzer is connected with the first forward diode, the first buzzer is used for sending a first prompting sound of a first type to serve as the first indication signal based on the received forward test signal, and the first forward diode is used for sending the forward test signal to the detection component so as to form an electric loop.

4. The polarity detection apparatus of claim 2, wherein the forward direction indication assembly comprises: a first indicator light and a second forward diode;

the first indicator light is connected with the second forward diode, the first indicator light is used for sending first prompt light with a first color based on the received forward test signal to serve as the first indicator signal, and the second forward diode is used for sending the forward test signal to the detection assembly to form an electric loop.

5. The polarity detection apparatus of claim 2, wherein the reverse direction indication assembly comprises: a second buzzer and a first reverse diode;

the second buzzer is connected with the first reverse diode, the second buzzer is used for sending a second prompting sound of a second type to serve as the second indicating signal based on the received reverse test signal, and the first reverse diode is used for sending the reverse test signal to the selection component so as to form an electric loop.

6. The polarity detection apparatus of claim 2, wherein the reverse direction indication assembly comprises: a second indicator light and a second reverse diode;

the second indicator light is connected with the second reverse diode, the second indicator light is used for sending second prompt light with a second color to serve as the second indicator signal based on the received reverse test signal, and the second reverse diode is used for sending the reverse test signal to the selection component to form an electric loop.

7. The polarity detection apparatus according to any one of claims 2 to 6, further comprising: a plurality of gear components of different electrical signal thresholds;

the first selector switch and the second selector switch are connected with the forward direction indication assembly and the reverse direction indication assembly through a plurality of gear assemblies, and the gear assemblies are used for selecting corresponding electric signal thresholds to test and transmit the test signals.

8. The polarity detection device of claim 7, wherein the gear assembly includes a first potentiometer and a third forward diode;

the first potentiometer is connected with the first selection switch and is used for performing potential processing on the forward test signal sent by the first selection switch;

the third forward diode is configured to connect the first potentiometer and the forward indication component to send the forward test signal to the forward indication component.

9. The polarity detection device of claim 7, wherein the gear assembly includes a second potentiometer and a third reverse diode;

the third reverse diode is used for connecting the reverse indication assembly and the second potentiometer so as to receive the reverse test signal sent by the reverse indication assembly;

the second potentiometer is connected with the second selection switch and is used for performing potential processing on the received reverse test signal and sending the reverse test signal to the second selection switch.

10. The polarity detection apparatus of claim 1, wherein the detection assembly comprises: the first detection pen and the second detection pen; a test meter is connected between the first detection pen and the second detection pen; the selection component comprises a third selection switch of a numerical test file;

the first detection pen is used for contacting a first to-be-detected point, and the second detection pen is used for contacting a second to-be-detected point;

if the numerical test gear is selected, the third selection switch is used for disconnecting the connection between the detection component and the indication component;

the first probe pen and the second probe pen are used for forming an electric loop, and the test meter is used for testing the signal value of the test signal.