CN214375203U

CN214375203U - Wire test equipment and test device

Info

Publication number: CN214375203U
Application number: CN202023297136.3U
Authority: CN
Inventors: 黄骏天
Original assignee: Chongqing Fengniao Uav Technology Co Ltd
Current assignee: Chongqing Fengniao Uav Technology Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-08
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a wire test equipment and testing arrangement, wire test equipment include first testing arrangement and second testing arrangement, and first testing arrangement includes mode change over switch, signal processor and the mutual plug of signal, and signal processor is all connected to the mutual plug of signal and mode change over switch, first testing arrangement and second testing arrangement's structure phase-match, the wire that awaits measuring of mutual plug connection. Accessible toggle switch is with the mode that switches testing arrangement needs, and the test signal is launched to one of first testing arrangement and the second testing arrangement, and another receives feedback signal, can test the wire that awaits measuring, through received feedback signal alright know the testing result to the wire that awaits measuring, need not use the extension wire, avoided the extension wire probably to take place the winding, its inconvenient and the problem that has unreliable connection easily of operation, improved the accuracy and the convenience of use of wire test.

Description

Wire test equipment and test device

Technical Field

The utility model relates to a test technical field especially relates to a wire test equipment and testing arrangement.

Background

The lead is a common element for connecting each electric device, and the electrical performance of the lead is a key factor influencing the working performance of the electric device, so that the on-off and other conditions of the lead need to be detected to help workers to find and remove faults in time and ensure the normal operation of each electric device. For example, in the process of aircraft development and maintenance, it is often necessary to test the on-off condition of a multi-strand long conductor in some narrow space to confirm the integrity of the electrical performance of the conductor, so as to help research and development personnel or maintenance personnel to judge and isolate faults.

The traditional long lead test usually uses a universal meter as test equipment and adopts a grounding method for testing, namely, a tested lead is grounded with one end of a probe of the universal meter at the same time, the other end of the lead is connected with the other probe of the universal meter, and the resistance at the two ends of the measured lead realizes the test of the on-off of the lead. However, the multimeter probe has a limited length, which results in a limited maximum length of the wire to be tested, generally the straight-line distance tested by a worker is not more than 2m, an extension wire is usually used, the extension wire may be wound, the operation is inconvenient, unreliable connection is easy to occur, and the traditional wire testing method is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a wire testing apparatus and a testing device for solving the problem of inconvenient use of the conventional wire testing method.

A wire testing apparatus comprising a first testing device and a second testing device, the first testing device comprising:

the mode switch is used for switching the testing device to be in a signal transmitting mode or a signal receiving mode;

the signal processor transmits a test signal to a wire to be tested through the signal interaction plug in the signal transmitting mode, and receives a feedback signal from the wire to be tested through the signal interaction plug in the signal receiving mode;

accessing a signal interaction plug of a wire to be tested;

the signal interaction plug and the mode selector switch are both connected with the signal processor, the first testing device and the second testing device are matched in structure, and working modes are different when the signal interaction plug and the mode selector switch are used; and the signal interaction plug of the first testing device and the signal interaction plug of the second testing device are respectively connected with two ends of a wire to be tested.

The wire test equipment comprises a first test device and a second test device, wherein the first test device comprises a mode switch for switching the test device to be in a signal transmitting mode or a signal receiving mode, a test signal is transmitted to a wire to be tested through a signal interaction plug in the signal transmitting mode, a signal processor for receiving a feedback signal from the wire to be tested through the signal interaction plug in the signal receiving mode and a signal interaction plug for accessing the wire to be tested, the signal interaction plug and the mode switch are both connected with the signal processor, the first test device and the second test device are matched in structure and different in working mode when in use, and the signal interaction plug of the first test device and the signal interaction plug of the second test device are respectively connected with two ends of the wire to be tested. The testing device comprises a mode switching switch, the mode required by the testing device can be switched by a toggle switch, the working modes of the first testing device and the second testing device are set to be different types in a signal transmitting mode or a signal receiving mode, one testing signal is transmitted by the first testing device and the second testing device, the other testing device receives a feedback signal, the wire to be tested can be tested, the detection result of the wire to be tested can be known by the received feedback signal, the extension wire does not need to be used, the problem that the extension wire is wound possibly is avoided, the operation is inconvenient and unreliable connection is easy to occur, and the accuracy and the use convenience of the wire test are improved.

In one embodiment, the signal processor is a single chip microcomputer for detecting the on-off of the lead according to the relationship between the received times of the feedback signal matched with the test signal and a preset time threshold value.

In one embodiment, the wire testing device further comprises a signal adapter board, and the signal processor and the signal interaction plug are both connected with the signal adapter board.

In one embodiment, the signal adapter board comprises a filter circuit and a signal amplifier, the signal processor is connected with the filter circuit, the filter circuit is connected with the signal amplifier, and the signal amplifier is connected with the signal interaction plug.

In one embodiment, the signal interaction plug is a universal connector capable of connecting more than two plugs simultaneously.

In one embodiment, the signal processor comprises a controller and an on-board cable on the same circuit board, the mode switch is connected with the controller, and the controller is connected with the signal interaction plug through the on-board cable.

In one embodiment, the lead testing device further comprises an interaction device, and the interaction device is connected with the signal processor.

In one embodiment, the lead testing device further comprises a shell and an end cover, the end cover and the shell are arranged in a sealing mode, the mode switching switch is arranged on one side, far away from the shell, of the end cover, and the signal processor is arranged in a cavity formed by the shell and the end cover.

In one embodiment, the second testing device is identical in structure to the first testing device. A wire testing device comprising:

accessing a signal interaction plug of a wire to be tested;

the signal interaction plug and the mode selector switch are both connected with the signal processor.

The wire testing device comprises a mode switch for switching the testing device to be in a signal transmitting mode or a signal receiving mode, a signal processor for transmitting a testing signal to a wire to be tested through a signal interaction plug in the signal transmitting mode, a signal processor for receiving a feedback signal from the wire to be tested through the signal interaction plug in the signal receiving mode, and a signal interaction plug connected to the wire to be tested, wherein the signal interaction plug and the mode switch are both connected with the signal processor. When the wire testing device is used, the two wire testing devices are matched for use, and the signal interaction plugs of the two testing devices are respectively connected with the two ends of the wire to be tested. The testing device comprises a mode switching switch, the mode required by the testing device can be switched by a toggle switch, the working modes of the two testing devices are set to be different types in a signal transmitting mode or a signal receiving mode, one testing signal is transmitted, the other testing device receives a feedback signal and can test the wire to be tested, the detection result of the wire to be tested can be known by the received feedback signal, the extension wire does not need to be used, the problem that the extension wire is wound possibly is avoided, the operation is inconvenient and unreliable connection is easy to occur, and the accuracy and the use convenience of the wire test are improved.

Drawings

FIG. 1 is a block diagram of a lead test apparatus according to an embodiment;

FIG. 2 is a block diagram of the configuration of a wire test apparatus according to an embodiment;

FIG. 3 is a front view of the main body of the wire test apparatus in one embodiment;

FIG. 4 is a top view of an end cap of the wire testing apparatus in one embodiment;

FIG. 5 is a top view of the interior of the housing of the wire testing apparatus in one embodiment;

FIG. 6 is a rear view of the housing of the wire testing device in one embodiment;

FIG. 7 is a flow diagram of a self-test of a wire testing apparatus in one embodiment;

FIG. 8 is a schematic diagram of the testing of the lead testing apparatus in one embodiment;

FIG. 9 is a flowchart illustrating operation of the wire test apparatus according to one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, please refer to fig. 1, a wire testing apparatus is provided, which includes a first testing device 100 and a second testing device 200 that are matched in structure, the first testing device 100 includes a mode switch 110, a signal processor 120 and a signal interaction plug 130, the signal interaction plug 130 and the mode switch 110 are both connected to the signal processor 120, the signal interaction plug of the first testing device 100 and the signal interaction plug of the second testing device 200 are respectively connected to two ends of a wire to be tested, the mode switch 110 can switch the testing device to be in a signal transmitting mode or a signal receiving mode, the signal processor 120 transmits a testing signal to the wire to be tested through the signal interaction plug 130 in the signal transmitting mode, receives a feedback signal from the wire to be tested through the signal interaction plug 130 in the signal receiving mode, the signal interaction plug 130 accesses the wire to be tested, the first testing device 100 and the second testing device 200 operate in different modes during use. The first testing device 100 and the second testing device 200 both comprise the mode switch 110, the mode required by the testing devices can be switched by the toggle switch, the working modes of the first testing device 100 and the second testing device 200 are set to be different types in a signal transmitting mode or a signal receiving mode, one of the first testing device 100 and the second testing device 200 transmits a testing signal, the other receives a feedback signal, the wire to be tested can be tested, the detection result of the wire to be tested can be known by the received feedback signal, the extension wire does not need to be used, the problem that the extension wire is wound possibly is avoided, the operation is inconvenient, the unreliable connection is easy to happen, and the accuracy and the use convenience of the wire testing are improved.

Specifically, the first testing device 100 and the second testing device 200 are structurally matched, which means that the first testing device 100 and the first testing device 100 have the same structure or have slight differences. Taking the first testing device 100 and the second testing device 200 with the same structure as an example, the first testing device 100 and the second testing device 200 are both called testing equipment, the testing equipment is used in a set, when a lead needs to be tested, a worker needs to take two sets of testing equipment, and the two sets of testing equipment are respectively connected with two ends of the lead.

The first test apparatus 100 and the second test apparatus 200 each include a mode switching switch 110, and the type of the mode switching switch 110 is not exclusive and may be, for example, a push button switch. The worker can shift the mode switch 110 to different gears, and the different gears correspond to different high and low levels, and the high and low levels correspond to different working modes. It is understood that the signal processor 120 stores a transmission program corresponding to a signal transmission mode and a reception program corresponding to a signal reception mode in advance. The mode switch 110 is connected to the signal processor 120, when the mode switch 110 is in different positions, the signal processor 120 correspondingly executes a transmitting program or a receiving program, when the signal processor 120 executes the transmitting program, the first testing device 100 or the second testing device 200 is considered to be in the signal transmitting mode, and when the signal processor 120 executes the receiving program, the first testing device 100 and the second testing device 200 are considered to be in the signal receiving mode. The main role of the mode switch 110 is to switch the test device configuration, i.e. to switch whether the test device is used for transmission or reception, i.e. to switch the functionality of the test device.

The signal interactive plug 130 is used for connecting a wire to be tested, and is used as a medium for connecting the wire to be tested with the signal processor 120. When the device is used, the signal interaction plug 130 of the first testing device 100 is connected to one end of a wire to be tested, and the signal interaction plug 130 of the second testing device 200 is connected to the other end of the wire to be tested. When the first testing device 100 and the second testing device 200 are used, the working modes are different, for example, the first testing device 100 is in a signal transmitting mode, and the second testing device 200 is in a signal receiving mode, the signal processor 120 of the first testing device 100 transmits a testing signal to the wire to be tested through the signal interactive plug 130, the signal processor 120 of the second testing device 200 receives a feedback signal from the wire to be tested, and a testing result of the wire to be tested can be obtained according to the testing signal and the feedback signal. The basis for the signal processor 120 to obtain the test result of the lead to be tested is not unique, and in this embodiment, the signal processor 120 determines the on-off status of the lead to be tested by using a count comparison method, where the lead to be tested is the lead to be tested mentioned above. In the test apparatus in the signal transmission mode, the active transmission source unit of the signal processor 120 modulates and transmits a test signal outwards, the test signal is a pulse test signal, and the pulse test signal is transmitted through the tested wire. In the test apparatus in the signal receiving mode, the receiving test unit module of the signal processor 120 receives the feedback signal, demodulates the received pulse wave, counts once if a signal having a pulse frequency consistent with the frequency of the pulse test signal is received, and determines that the conducting state of the wire is good if the signal can be counted to a set value. It is understood that in other embodiments, the signal processor 120 can use other methods to determine the result of the wire test, as long as the skilled person can realize the determination.

In one embodiment, the signal processor 120 is a single chip microcomputer for detecting the on/off of the wire according to the relationship between the number of times of receiving the feedback signal matched with the test signal and a preset number threshold. Specifically, when the single chip microcomputer is in the signal receiving mode, the feedback signal matched with the test signal sent by the test device in the signal transmitting mode is received, where matching may be understood as that the feedback signal is identical to the test signal in terms of parameters, for example, the signal frequency is identical, and the feedback signal is considered to be matched with the test signal. The singlechip counts the times of receiving the feedback signals matched with the test signals, if the count reaches a preset time threshold value, the lead can normally transmit signals, and the lead is not interrupted, so that the on-off detection of the lead to be detected is realized. The value of the preset time threshold is not unique and can be adjusted according to actual requirements. It is understood that in other embodiments, the signal processor 120 may be other types of devices as long as those skilled in the art recognize that the implementation is possible.

In one embodiment, referring to fig. 2, the wire testing device further includes a signal adapter board 140, and the signal processor 120 and the signal interaction plug 130 are connected to the signal adapter board 140. The signal adapter board 140 can process the signal sent by the signal processor 120 and then send the processed signal, and can also process the signal to be transmitted to the signal processor 120 and then transmit the processed signal to the signal processor 120, thereby improving the quality of the transmitted signal. Specifically, the signal patch panel 140 is not unique in structure and does not have the same corresponding function. In this embodiment, taking the first testing device 100 in the signal transmission mode as an example, when the wire testing apparatus includes a patch port, the signal patch panel 140 is connected to the signal interaction plug 130 through the patch port, the signal processor 120 of the first testing device 100 transmits the test signal to the signal patch panel 140, and the signal patch panel 140 filters the test signal and transmits the test signal to the signal interaction plug 130 through the patch port, so as to improve the signal quality of the test signal.

In one embodiment, the signal adapter board 140 includes a filter circuit and a signal amplifier, the signal processor 120 is connected to the filter circuit, the filter circuit is connected to the signal amplifier, and the signal amplifier is connected to the signal interaction plug 130.

Specifically, when the signal adapting board 140 includes a filter circuit and a signal amplifier, the filter circuit may filter the test signal sent by the signal processor 120 and transmit the filtered test signal to the signal interaction plug 130, and may also filter the feedback signal transmitted by the signal interaction plug 130 and transmit the filtered feedback signal to the signal processor 120 for processing, so as to improve the signal quality. When the test signal is a pulse test signal, the signal amplifier can amplify the peak value of the pulse test signal, and the test performance of the equipment on a long-distance wire is improved. In an expandable manner, the signal adapting board 140 may further include a zener diode, an anode of the zener diode is connected to the signal interaction plug 130, a cathode of the zener diode is connected to the signal processor 120, and the zener diode may stabilize the received feedback signal into a TTL (binary-transistor logic) level signal for the signal processor 120 to perform processing such as counting, so as to prevent signal impact and cause irreversible damage to the signal processor 120. Or, the anode of the zener diode may also be connected to the signal amplifier, the cathode of the zener diode is connected to the signal processor 120, when the first testing apparatus 100 or the second testing apparatus 200 is in the signal receiving mode, the feedback signal from the wire to be tested is transmitted to the signal amplifier through the signal interaction plug 130, the signal amplifier amplifies the feedback signal, and the amplified feedback signal is transmitted to the signal processor 120 through the zener diode, so as to prevent the signal processor 120 from being impacted by the amplified signal, and protect the signal processor 120. It is understood that in other embodiments, the signal patch panel 140 may have other configurations, as long as the implementation is deemed possible by those skilled in the art.

In one embodiment, the signal interaction plug 130 is a universal connector that can connect more than two plugs simultaneously. In this embodiment, the signal interaction plug 130 may be connected to more than two plugs at the same time, so that multiple wires may be connected to the first testing device 100 and the second testing device 200, thereby implementing simultaneous testing of multiple wires and improving testing efficiency.

Generally speaking, the two ends of the lead to be tested are provided with the adapters, the signal interaction plug 130 can be directly connected into the adapters, and the plug does not need to be taken down or the lead does not need to be stripped out when the lead to be tested is tested, so that on-site on-off testing of multiple paths of leads is realized. For example, for a medium-large aircraft, the lead of the aircraft is generally difficult to be tested out of position, namely the lead is taken out of the aircraft and then tested, and the lead testing device provided by the application can be applied to the lead testing of the aircraft. The type of the signal interaction plug 130 is not unique, for example, the signal interaction plug 130 may be a 12-way standard industry idc2.54mm universal connector, a convertible lead probe, an aviation plug, a heavy-duty connection plug, etc., the convertible plug connected with the signal interaction plug is a tested lead, and the conversion plug can convert a horn base into an aviation plug matched with the tested lead, or plug pins and detection probes of various types, so as to meet the working conditions of different airplanes and different plug types. The signal interaction plug 130 can be connected with more than two plugs simultaneously, so that the simultaneous testing of multiple paths of wires is realized. In an extensible manner, the signal interaction plug 130 can be connected with a plurality of plugs of the same type or different types, so as to improve the compatibility and the use convenience of the lead testing equipment. The number of the jacks of the signal interaction plug 130 is not unique, in this embodiment, the signal interaction plug 130 has the number of the jacks capable of providing the transmission of the highest 12-path test pulse signals, so that the function of simultaneously testing multiple paths of wires is realized, the test time is short, the test is not required to be completed for disassembling one path of wires, and then the next path of wires is tested, so that the test time is saved.

The wire test equipment adopts the design idea of a general module, one piece of equipment has the functions of transmitting and receiving, two working states of transmitting and receiving are switched by a mode switch 110, no host computer and extension computer or slave computer are separated, and the test equipment is connected with a wire to be tested through a signal interaction plug 130 when in a signal transmitting mode or a signal receiving mode, the signal interaction plug 130 can be simultaneously connected with multiple paths of wires to be tested with the same type or different types, only an interface connected with the wire to be tested is needed, the test device in the signal transmitting mode is connected with one end of the wire to be tested, the other end of the wire to be tested or a signal receiver is not needed to be connected, the on-site on-off test of the multiple paths of wires can be realized, and the on-site wire test device can be applied to on-site wire test in narrow space in aviation maintenance.

In one embodiment, the signal processor 120 includes a controller and an on-board cable on the same circuit board, the mode switch 110 is connected to the controller, and the controller is connected to the signal-interacting plug 130 through the on-board cable. The controller is the processing center of the signal processor 120 and is responsible for processing signals, including generating signals, analyzing received signals and the like, the onboard cable is a medium for connecting the controller and external devices, signal transmission of the controller and devices such as the signal interaction plug 130 and the like can be realized, and the controller and the onboard cable are located on the same circuit board, so that the signal transmission efficiency can be improved, and the integration degree of equipment can be improved.

Specifically, the type of controller and board-mounted flat cable is not exclusive, and in this embodiment, the controller is board-mounted chip hardware circuit, that is, the singlechip, and board-mounted flat cable is board-mounted FPC (flexible printed circuit), and the volume and the weight of equipment can be reduced to utilize the FPC flat cable, are favorable to wire test equipment to develop to high density, miniaturization, high reliable direction. When the first testing device 100 is determined to be in the signal transmission mode according to the mode switch 110, the single chip microcomputer modulates a 20Hz pulse testing signal, the signal is transmitted to the signal adapter plate 140 through the on-board FPC flexible flat cable, the pulse signal transmitted by the tested lead is transmitted to the signal interaction plug 130 through the adapter, the signal interaction plug 130 is transmitted to the signal adapter plate 140, the signal is transmitted to the single chip microcomputer through the on-board FPC flexible flat cable after being subjected to voltage stabilizing and filtering by the signal adapter plate 140, and the single chip microcomputer demodulates, identifies and counts the pulse signal to realize the testing of the lead to be tested. It is understood that in other embodiments, the signal processor 120 may have other structures as long as those skilled in the art can realize the functions.

In one embodiment, referring to fig. 2, the wire testing apparatus further includes an interactive device 150, where the interactive device 150 can display information to facilitate timely communication of the information to the staff, so that the staff can monitor the wire testing apparatus conveniently, and can also receive a user instruction to the signal processor 120 to implement the operation of the wire testing apparatus as required.

Specifically, the structure of the interaction means is not exclusive, and in the present embodiment, the interaction means includes a display means and an input means. The display device is connected to the signal processor 120. The display device can display information, is convenient for timely convey the information to workers, enables the workers to conveniently monitor the lead testing equipment, and is convenient to use. The information displayed by the display device is different according to the signal transmitted by the signal processor 120. According to the type of the display information, the display device can comprise a test result display device and a test state display device, the test result display device is used for displaying the test result of the tested lead, and the test state display device is used for displaying the current working mode of the test device. For example, after the signal processor 120 receives and analyzes the feedback signal, a test result of the wire is obtained, the test result of the wire can be converted into a corresponding signal and sent to the display device, and the on-off state of the current tested wire can be intuitively known by the worker through the prompt information sent by the display device. The display device can also be connected to the mode switch 110, and when the mode switch 110 is in different gears, the display device displays different information, so that the working personnel can know the current working mode of the testing device. Alternatively, the display device may send information indicating the operation mode of the testing device according to the signal sent by the signal processor 120.

Further, the display device includes at least one of a display screen and an indicator light. The display screen can show abundant information, and pilot lamp use cost is low, and it is directly perceived to remind the effect, all can improve wire test equipment's use reliability.

Specifically, taking as an example that the display device includes both a display screen and indicator lights, the number of the display screen and the number of the indicator lights are not unique, and in this embodiment, the number of the display screen is one, and the number of the indicator lights is four, which are the emission status indicator light 102a, the reception status indicator light 102b, the test result indicator light 106, and the test status indicator light 107, respectively.

When the mode switch 110 is set to the "emitting" position, the wire testing device is switched to the signal emitting mode, the display screen is controlled to enter the emitting display subroutine, and the emitting status indicator lamp 102a is controlled to be powered on. The display screen is used as a man-machine interaction interface and is used for displaying the working state of the current testing device, and when the testing device works in a signal transmission mode, the display screen can display 'PLUSING', namely 'test pulse transmission'. In addition, the transmission status indicator light 102a lights up, indicating that the apparatus is operating in the signal transmission mode at this time.

When the mode switch 110 is set to the "receive" position, the device is switched to the signal receiving mode, the display screen is controlled to enter the receiving display subroutine, the test result indicator 106 is controlled to be powered on, the receiving status indicator 102b is controlled to be powered on, and the test status indicator 107 is controlled to be powered on. The display screen is used FOR displaying the current working state of the testing device, and after the equipment is powered on, the display screen displays 'WAITING FOR measurement', namely WAITING FOR the testing mode, and in addition, the receiving state indicator lamp 102b is lightened to prompt that the equipment is in the signal receiving mode to work at the moment.

Meanwhile, the display screen displays the test result of the test. For example, the following steps are carried out: when the electrical performance of the wire 1 is tested well, "LINE 1O" is displayed on the screen, and when the electrical performance of the wire 3 is not tested yet, "LINE 3X" is displayed on the screen. The test result indicator light 106 will also display the wire test result. For example, when the electrical performance test of the lead 1 is good, the corresponding indicator light 1 is turned on in green, and when the electrical performance test of the lead 3 is failed, the corresponding indicator light 3 is turned on in red. The test status indicator light 107 is used to indicate to the worker that the device is under test and will flash to indicate when it is in operation. After all the lead TESTs are finished, the display screen can display 'TEST OVER', namely 'TEST is finished', and staff are reminded that the TEST is finished. It is understood that the structure of the display device may be other, the display screen may be the OLED display screen 101, and the number of the display screens, the type and the number of the indicator lamps may be adjusted according to actual situations, as long as the implementation is considered by those skilled in the art.

The input device is connected to the signal processor 120, and the input device can receive a user command to the signal processor 120, so as to implement the operation of the lead test equipment according to the requirement. Specifically, the type of input device is not exclusive and may be, for example, a test button 105, and when the user presses the test button 105, the signal processor 120 initiates a test on the lead under test according to a change in the test button 105. The arrangement position of the input device is not only, and when the lead testing device comprises the shell 2 and the end cover 1, the input device can be arranged on the end cover 1, so that the operation of workers is convenient. The input device may have other structures, such as a reset key or a reset key, etc., as long as the skilled person can realize the function.

In one embodiment, referring to fig. 3, the wire testing apparatus further includes a housing 2 and an end cap 1, the end cap 1 and the housing 2 are hermetically disposed, the mode switch 110 is disposed on a side of the end cap 1 away from the housing 2, and the signal processor 120 is disposed in a cavity formed by the housing 2 and the end cap 1.

Specifically, the shell 2 serves as a holding device for a part of devices in the wire testing equipment, and a cavity formed by the shell 2 and the end cover 1 facilitates placement of the devices and plays a role in protecting the devices. The shape of the shell 2 is not unique, and the shell may be a cuboid shell 2 only comprising one end face, and after some devices in the lead testing equipment are placed in the shell 2, the end cover 1 is covered, so that the end cover 1 and the shell 2 are sealed. The sealing mode is not unique, and in the embodiment, one side of four sides of the shell 2 close to the opening is provided with a sealing rubber strip groove which can be used for placing a sealing rubber strip, so that the end cover 1 is sealed with the shell 2 after being covered, and the water resistance of the whole device is guaranteed. The end cover 1 and the shell 2 are tightly matched through 4M 3 bolts 3, and can be connected in other modes. Further, some devices may be disposed on four sides of the housing 2, for example, the signal interaction plug 130 is disposed on the side of the housing 2, so that the signal interaction plug 130 is connected to the signal processor 120 inside the housing 2 and the wire to be tested outside the housing 2. Other devices of the wire testing device can also be arranged at different positions of the housing 2 and the end cover 1 according to actual requirements, or in a cavity formed by the housing 2 and the end cover 1, for example, the mode switch 110 and the display device are arranged on the end cover 1, so that the operation and the information acquisition of workers are facilitated, and other devices can also be arranged according to requirements as long as the implementation is realized by those skilled in the art.

In one embodiment, the signal processor 120 is further configured to perform a hard restart and a self-check on the device after the duration that the input apparatus receives the user instruction reaches a preset duration. Specifically, for example, when the input device includes the test button 105, after the worker presses the test button 105 for 10 seconds, the hardware circuit on the signal processor 120 will force an interrupt, the signal processor 120 will clear the internal data and the setting information of the chip, start the internal self-checking subroutine, and send an instruction to the signal adapter board 140 to notify the signal adapter board 140 that the self-checking subroutine is started. The signal processor 120 self-checking subroutine modulates the pulse self-checking signals with 1Hz as an interval and 1Hz-2000Hz, and sequentially sends the pulse self-checking signals to perform signal demodulation, if the subroutine successfully receives and demodulates the signals, the signal modulation and demodulation board 201 is normal in function, otherwise, the signal modulation and demodulation board needs to be replaced. If the signal processor 120 passes the self-test, it will send an instruction to start the self-test subroutine of the signal adapter board 140, and at this time, the signal processor 120 will generate a continuous noise with an amplitude higher than the normal test signal and send it to the signal adapter board 140, if the signal adapter board 140 successfully stabilizes the voltage of the signal and reduces the noise and then sends it back to the signal processor 120, it indicates that the signal adapter board 140 is functioning normally, otherwise, it needs to be replaced. After the above process is completed, the signal processor 120 generates a self-test report message or an error code, and displays the message or the error code on the display screen.

In one embodiment, the wire testing device further comprises an energy storage device, which is connected to the signal processor 120. The energy storage device may provide power to the signal processor 120 so that the signal processor 120 may operate properly.

Specifically, the energy storage device is not unique in structure and may include, for example, a battery compartment 202 and a battery, the battery being disposed in the battery compartment 202, and the battery compartment 202 may provide protection for the battery therein. The battery can be a lithium ion battery and has long service life. The battery is connected to the signal processor 120 for supplying power to the signal processor 120. And in an expandable manner, the battery can be connected with other devices needing power, so that the normal operation of the wire test equipment is guaranteed. It is understood that in other embodiments, the energy storage device may have other configurations, as deemed practicable by those skilled in the art.

In an expanded form, the lead testing device further comprises a device switch 212, the device switch 212 being disposed on the housing 2 or the end cap 1 and being connected to a common connection point of the signal processor 120 and the energy storage device. The device switch 212 can control the on-off of the line between the energy storage device and the signal processor 120, so as to control whether the signal processor 120 works or not, and can be used for starting or stopping a lead test device by one key, and the use is convenient. It is understood that in other embodiments, the setting position and connection relationship of the device switch 212 may be adjusted according to actual requirements, as long as the implementation is considered by those skilled in the art.

For a better understanding of the above embodiments, the following detailed description is given in conjunction with a specific embodiment. In one embodiment, referring to fig. 3-7, the first testing device 100 and the second testing device 200 are both referred to as testing devices, the display device includes a display screen and an indicator light, and the device body has a mode switch 110, which can be toggled to switch the required mode, i.e. when the device is used by a worker, two sets of the device are required to be taken, one set of the device switches the switch to the active transmission mode, the other set of the device switches to the receiving testing mode, the two ends of the tested wire are respectively connected to the signal interaction plugs 130 of the two devices, and the testing button 105 is pressed, so that the testing of the tested wire can be started. The test results are obtained by viewing the display screen and the test result indicator light 106. Aiming at the on-site wire test in a narrow space in aviation maintenance, the scheme adopts a general module design idea, one device has transmitting and receiving functions, a change-over switch is used for switching two working states of transmitting and receiving, no host computer and extension/slave computer are required, the transmitting and receiving modules of the test only need one interface connected with a wire to be tested, and the transmitting module can realize the on-site on-off test of a plurality of paths of wires without connecting the other end of the wire to be tested or a signal receiver.

Fig. 3 is a front view of the apparatus main body. The end cap 1 is an upper cap, the input device comprises a test button 105, the signal processor 120 comprises a signal modulation and demodulation board 201, and the device main body comprises an upper cap and a shell 2 which are made of industrial ABS plastic. The upper cover is tightly matched with the shell 2 by 4M 3 bolts 3. Fig. 4 is a plan view of the upper cover of the apparatus. The upper cover includes an OLED display 101, an emission status indicator 102a, a reception status indicator 102b, a mode switch 110, a test button 105, a test result indicator 106, and a test status indicator 107. As shown in fig. 5, the inside of the apparatus case 2 is viewed from above. The interior of the housing 2 is composed of a signal modulation and demodulation board 201, a battery compartment 202 and a signal adapter board 140. The entire device is powered by the lithium ion battery in the battery compartment 202. The signal modulation and demodulation board 201 and the signal adapting board 140 are fastened with the equipment casing 2 through M3 screws at four corners of the signal modulation and demodulation board. As shown in fig. 6, the rear view of the device housing 2 includes a signal interaction plug 130 and a device switch 212, the signal interaction plug 130 is a connection interface with the tested wire, and the device switch 212 is a main switch of the device.

Specifically, referring to fig. 9, the device switches the working state of the device by one key through the mode switch 110, and the device includes the OLED display 101, the signal modulation and demodulation board 201, and the signal adapter board 140, which can be changed by the mode switch. When the mode switch 110 is placed in the "transmit" position, the device switches to the active transmit mode: at this time, the onboard single chip microcomputer of the signal modulation and demodulation board 201 switches the internal program into a transmitting configuration, starts the pulse modulation subprogram, and simultaneously, the signal adapter board 140 receives the instruction, and is controlled to enter a transmitting and filtering state so as to amplify and transmit the test pulse, simultaneously, the OLED display screen 101 is controlled to enter the transmitting and displaying subprogram, and simultaneously, the transmitting state indicator lamp 102a is controlled to be powered on.

The OLED display screen 101 serves as a human-computer interaction interface for displaying the current working state of the test device, and when the test device works in the active emission unit mode, the OLED display screen 101 displays "pulsing", that is, "during emission of test pulses". In addition, the transmission status indicator light 102a lights up, indicating that the apparatus is operating in the signal transmission mode at this time. At this time, no operation is needed, the signal modulation and demodulation board 201 modulates a 20Hz pulse test signal by using an on-board chip hardware circuit (single chip microcomputer), transmits the signal to the signal adapter board 140 through an on-board FPC flexible flat cable, and outputs a pure pulse test signal after filtering by the signal adapter board 140 to be transmitted to the signal interaction plug 130 through the adapter port.

Furthermore, in order to prevent the signal attenuation from affecting the final measurement result, the signal adapter board 140 is provided with a signal amplifier, which can amplify the peak value of the pulse test signal, thereby improving the test performance of the device on a long-distance wire.

When the mode switch 110 is placed in the "receive" position, the device switches to receive test mode: at this time, the onboard single chip microcomputer of the signal modulation and demodulation board 201 switches the internal program into a receiving configuration, and starts a demodulation and counting subprogram. Simultaneously, the signal adapter board 140 receives the instruction, and is controlled to enter a receiving voltage stabilization state so as to receive the test pulse, stabilize the voltage, filter and relay the test pulse to the modulation and demodulation board. Simultaneously, the OLED display 101 is controlled to enter the reception display subroutine. Simultaneously, the test result indicator lamp 106 is controlled to be powered on, the reception status indicator lamp 102b is controlled to be powered on, and the test status indicator lamp 107 is controlled to be powered on.

The OLED display screen 101 serves as a human-computer interaction interface, and is configured to display a current unit operating state, where the display effect is as follows: when the device is powered on, the OLED display 101 will display "wait FOR measurement", i.e. wait FOR a test mode. In addition, the reception status indicator lamp 102b is turned on, which indicates that the apparatus is operating in the reception test mode at this time. At this point, the operator presses the test button 105105 to begin the test operation. The pulse signals transmitted by the tested wires are sent into the signal interaction plug 130 through the adapter, sent into the signal adapter plate 140 through the signal interaction plug 130, subjected to voltage stabilization and filtering through the signal adapter plate 140, and then transmitted to the signal modulation and demodulation plate 201 through the on-board FPC flexible flat cable, and at the moment, the on-board single chip microcomputer demodulates, identifies and counts the pulse signals.

In order to prevent the amplified signal from impacting and causing irreversible damage to an onboard singlechip on the signal modulation and demodulation board, meanwhile, the signal adapter board 140 is provided with an impact voltage stabilizing diode, and further stabilizes the received test signal into a TTL level signal for the signal modulation and demodulation board 201 to count and process. The OLED display 101 displays the test result of this test, for example: when the electrical performance of the wire 1 is tested well, "LINE 1O" is displayed on the screen, and when the electrical performance of the wire 3 is not tested yet, "LINE 3X" is displayed on the screen. At the same time, the test result indicator light 106 will also display the wire test result. For example, the following steps are carried out: when the electrical performance test of the lead 1 is good, the corresponding indicator light 1 is turned on in green, and when the electrical performance of the lead 3 fails, the corresponding indicator light 3 is turned on in red. The test status indicator light 107 is used to indicate to the worker that the device is under test and will flash to indicate when it is in operation. After all the wire TESTs are completed, the display screen displays "TEST OVER PRESS TO RESET", that is, "TEST OVER, button RESET", and at this time, the TEST button 105 is pressed TO RESET.

The test button 105 is not only used for starting test and resetting test, but also can be used for self-checking the equipment by pressing the test button 105 for a long time, at the moment, no matter what state the mode selector switch 110 is in, the equipment can be forcibly restarted and starts a self-checking program, and meanwhile, whether the self-checking passes or an error code is displayed on the OLED display screen 101, so that a user can conveniently perform troubleshooting or service.

The self-checking process comprises the following steps: referring to fig. 7, when the data of the OLED display 101 is found to be abnormal or the testing device does not respond, the operator may press the test button 10510s for a long time in any state, and the hardware circuit on the signal modulation and demodulation board 201 will be forced to enter into an interrupt. The signal modem board 201 will clear the internal data and setting information of the chip, start the internal self-test subprogram, and send an instruction to the signal adapter board 140 to inform the signal adapter board 140 of the start of the self-test subprogram. The signal modulation and demodulation board 201 self-checking subprogram modulates the pulse self-checking signals with 1Hz-2000Hz intervals, and sends the signals in sequence for signal demodulation, if the subprogram successfully receives and demodulates the signals, the signal modulation and demodulation board 201 is normal in function, otherwise, the signal modulation and demodulation board 201 needs to be replaced. If the signal modulation and demodulation board 201 passes the self-test, it will send an instruction to start the self-test subprogram of the signal adapter board 140, at this time, the signal modulation and demodulation board 201 will generate a continuous noise with an amplitude higher than that of the normal test signal, and send it to the signal adapter board 140, if the signal adapter board 140 successfully stabilizes the voltage of the signal and reduces the noise, and then return it to the signal modulation and demodulation board 201, it indicates that the signal adapter board 140 is functioning normally, otherwise, it needs to be replaced. After the above process is completed, the signal modulation and demodulation board 201 will generate self-test report information or error codes, and display the self-test report information or error codes on the OLED display screen 101.

The signal interaction plug 130 is a 12-path standard industrial IDC2.54mm universal connector, a tested lead adapter is matched with the signal interaction plug, and a horn base can be switched to an aviation plug matched with a tested lead or plug pins and detection probes of various types, so that the working conditions of different airplanes and different plug types can be switched to lead probes, aviation plugs, heavy-load connection plugs and the like. The signal interaction plug 130 provides the output of the highest 12 paths of test pulse signals, the function of simultaneously testing multiple paths of leads is realized by circularly detecting the 12 paths of signals, the test time is short, and the time cost of disassembling the machine to test the next path after one path of test is finished is reduced.

The principle of on-off test is as follows: referring to fig. 8, the wire testing device determines the on-off status of the tested wire by using a count comparison method, that is, the active emission source unit modulates and emits at most 12 paths of 20Hz pulse testing signals, the signals are transmitted through the tested wire, the receiving testing unit module filters and demodulates the received pulse waves, if the received pulse frequency is still 20Hz, the counting is performed once, and if the set value can be counted for 50 times, the conducting status of the wire is determined to be good.

The wire test equipment can test the wire in place, is suitable for the long wire which can not be out of place, and does not need to detach the wire and simultaneously connect to one equipment for measurement. But many cables of simultaneous test multichannel have improved work efficiency, have alleviateed the inconvenience of frequently looking for circuit and plug, have the design that can dismantle and change the adapter, test different types of wire under the different behavior, only need change the crossover head can, but modularization and commonality are wide, have avoided traditional approach to the damage of wire plug at universal meter probe winding fuse method, have reduced the probability that produces the hidden trouble. The pulse testing method is simple to operate, does not need the assistance of other wires, and greatly reduces the working time cost. The equipment has a self-detection function, and a detection result can be given on a display screen, so that later-stage equipment maintenance is facilitated. The equipment has no branch of a host machine and a slave machine/extension machine, and an operator can freely take and use two sets of equipment, so that the learning cost is reduced, and the management and the storage are convenient.

The lead testing equipment comprises a first testing device 100 and a second testing device 200 which are matched in structure, wherein the first testing device 100 and the second testing device 200 are respectively connected with two ends of a lead to be tested, the first testing device 100 comprises a mode switch 110 for switching the testing device to be in a signal transmitting mode or a signal receiving mode, a signal processor 120 for transmitting a testing signal to the lead to be tested through a signal interaction plug 130 in the signal transmitting mode, a signal interaction plug 130 for receiving a feedback signal from the lead to be tested through the signal interaction plug 130 in the signal receiving mode, and the signal interaction plug 130 for accessing the lead to be tested, the signal interaction plug 130 and the mode switch 110 are both connected with the signal processor 120, and the first testing device 100 and the second testing device 200 are different in working mode when in use. The testing device comprises a mode switch 110, the mode required by the testing device can be switched by a toggle switch, the working modes of the first testing device 100 and the second testing device 200 are set to be different types in a signal transmitting mode or a signal receiving mode, one of the first testing device 100 and the second testing device 200 transmits a testing signal, the other one receives a feedback signal, a wire to be tested can be tested, the detection result of the wire to be tested can be known by the received feedback signal, an extension wire does not need to be used, the problem that the extension wire is wound possibly and is inconvenient to operate and unreliable to connect easily is solved, and the accuracy and the convenience in use of wire testing are improved.

In one embodiment, a wire testing device is provided, which includes a mode switch 110, a signal processor 120, and a signal interaction plug 130, the signal interaction plug 130 and the mode switch 110 are both connected to the signal processor 120, the signal interaction plug of the first testing device 100 and the signal interaction plug of the second testing device 200 are respectively connected to two ends of a wire to be tested, the mode switch 110 can switch the testing device to be in a signal transmitting mode or a signal receiving mode, the signal processor 120 transmits a test signal to the wire to be tested through the signal interaction plug 130 in the signal transmitting mode, receives a feedback signal from the wire to be tested through the signal interaction plug 130 in the signal receiving mode, and the signal interaction plug 130 is connected to the wire to be tested.

The wire testing device comprises a mode switch 110 for switching the testing device to be in a signal transmitting mode or a signal receiving mode, a signal processor 120 for transmitting a testing signal to a wire to be tested through a signal interaction plug 130 in the signal transmitting mode, receiving a feedback signal from the wire to be tested through the signal interaction plug 130 in the signal receiving mode, and a signal interaction plug 130 connected to the wire to be tested, wherein the signal interaction plug and the mode switch are both connected with the signal processor. When the wire testing device is used, the two wire testing devices are matched for use, and the signal interaction plugs of the two testing devices are respectively connected with the two ends of the wire to be tested. The testing device comprises a mode switching switch, the mode required by the testing device can be switched by a toggle switch, the working modes of the two testing devices are set to be different types in a signal transmitting mode or a signal receiving mode, one testing signal is transmitted, the other testing device receives a feedback signal and can test the wire to be tested, the detection result of the wire to be tested can be known by the received feedback signal, the extension wire does not need to be used, the problem that the extension wire is wound possibly is avoided, the operation is inconvenient and unreliable connection is easy to occur, and the accuracy and the use convenience of the wire test are improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A wire testing apparatus comprising a first testing device and a second testing device, the first testing device comprising:

accessing a signal interaction plug of a wire to be tested;

the signal interaction plug and the mode selector switch are both connected with the signal processor;

the first testing device and the second testing device are matched in structure, and different in working mode when in use; and the signal interaction plug of the first testing device and the signal interaction plug of the second testing device are respectively connected with two ends of a wire to be tested.

2. The wire test device according to claim 1, wherein the signal processor is a single chip microcomputer for detecting the on/off of the wire according to the relationship between the number of times of the received feedback signal matched with the test signal and a preset number threshold.

3. The wire testing device of claim 1, further comprising a signal patch panel, wherein the signal processor and the signal interaction plug are both connected to the signal patch panel.

4. The wire testing device of claim 3, wherein the signal patch panel comprises a filter circuit and a signal amplifier, the signal processor is connected to the filter circuit, the filter circuit is connected to the signal amplifier, and the signal amplifier is connected to the signal interaction plug.

5. The wire testing device of claim 1, wherein the signal interaction plug is a universal connector that can connect more than two plugs simultaneously.

6. The wire testing device of claim 1, wherein the signal processor includes a controller and an on-board cable on the same circuit board, the mode switch is connected to the controller, and the controller is connected to the signal interaction plug via the on-board cable.

7. The wire testing apparatus of claim 1, further comprising an interaction device coupled to the signal processor.

8. The wire testing device of claim 1, further comprising a housing and an end cap, wherein the end cap is hermetically sealed with the housing, the mode switch is disposed on a side of the end cap away from the housing, and the signal processor is disposed in a cavity formed by the housing and the end cap.

9. The wire testing apparatus of any of claims 1-8, wherein the second testing device is identical in construction to the first testing device.

10. A wire testing device, comprising:

accessing a signal interaction plug of a wire to be tested;