Cable on-off detection device

Abstract

The utility model provides a cable on-off detection device, which is characterized in that a first cable access plug and a second cable access plug are respectively connected with a voltage dividing power supply and grounded through a voltage dividing resistor; the main control module comprises a single chip microcomputer capable of controlling the driving state of the corresponding indicator lamp driving end according to the comparison between the sampling voltage of each detection end and the preset reference voltage, the intermediate node of the first cable access plug and the second cable access plug is connected to the detection end of the main control module, and each indicator lamp driving end is connected with an indicator lamp circuit; when a detected cable is connected between the first cable access plug and the second cable access plug, the single-chip microcomputer can automatically identify the welding quality of the detected cable according to the sampling voltage of the detection end, and drives the corresponding indicating lamp to be lightened for indication. The cable on-off detection device provided by the utility model can automatically detect the on-off condition of the welded cable, can effectively improve the detection efficiency, and improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable detection technical field, especially line cable detection device. BACKGROUND

[0002] Cable fault generally includes natural damage, electrical damage and human damage, and the main influence of the fault is cable open circuit, so the cable of the open circuit part needs to be repaired, in the prior art, welding mode is generally used for repairing, or in engineering or production, when multiple cable segments need to be combined, welding mode is also used for operation.

[0003] During the cable welding process, problems such as virtual welding, short circuit and open circuit generally occur, in order to guarantee the usability of the cable after welding, the cable after welding generally needs to be detected. In the prior art, the main detection method is to test by using a digital multimeter, when the number of cores and the number of cables to be detected are too large, this method will be time-consuming and labor-consuming, which is not conducive to batch production. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of line cable detection device to solve the problems of time-consuming and labor-consuming, low detection efficiency and not conducive to batch production in the prior art.

[0005] The utility model provides a kind of line cable detection device, comprising: main control module, first cable access plug and second cable access plug, wherein,

[0006] The main control module includes single-chip microcomputer that can control the drive state of corresponding indicator lamp drive end according to the comparison of the sampling voltage of each detection end and the preset reference voltage, and each indicator lamp drive end is connected with indicator lamp circuit;

[0007] Each access point of the first cable access plug is connected with each detection end one by one, and each access point of the first cable access plug is also connected to the output end of power module through first voltage divider resistor;

[0008] Each access point of the second cable access plug is grounded through second voltage divider resistor, so that when the two ends of the measured cable are connected to the first cable access plug and the second cable access plug respectively, the voltage of each access point of the first cable access plug can represent the on-off state of the corresponding line of the measured cable.

[0009] Optionally, the indicator lamp circuit includes light emitting diode and current limiting resistor, the cathode of the light emitting diode is connected to the corresponding indicator lamp drive end, and the anode of the light emitting diode is connected to the output end of the power module through the current limiting resistor.

[0010] Optionally, the main control module is provided with two groups.

[0011] Optionally, the first voltage divider resistor and the second voltage divider resistor each comprise a plurality of resistor arrays, the first cable access plug comprises a 40-core aviation plug, the second cable access plug comprises a 16-core aviation plug and a 21-core aviation plug, and the single-chip microcomputers of the two master control modules each comprise 16 detection ends and 16 indicator lamp driving ends.

[0012] The 40-core aviation plug is connected with four first resistor arrays, the 16-core aviation plug is connected with two second resistor arrays, the 21-core aviation plug is connected with two third resistor arrays, the first resistor array comprises eight single resistors, the second resistor array comprises five single resistors, and the third resistor array comprises ten single resistors.

[0013] Optionally, the power supply module comprises a power supply connector, a power supply switch, a first voltage conversion circuit and a second voltage conversion circuit, the input ends of the first voltage conversion circuit and the second voltage conversion circuit are connected to the output end of the power supply connector through the power supply switch, and the output ends of the first voltage conversion circuit and the second voltage conversion circuit are respectively connected to the power supply ends of the two single-chip microcomputers.

[0014] Optionally, the two first resistor arrays corresponding to one single-chip microcomputer are respectively connected to the output ends of the first voltage conversion circuit and the second voltage conversion circuit.

[0015] Optionally, the master control module further comprises a reset circuit connected to the single-chip microcomputer, and the reset circuit comprises a reset switch.

[0016] Optionally, the two single-chip microcomputers are in communication connection, and one of the two single-chip microcomputers is further connected with a display screen.

[0017] Optionally, the two groups of indicator lamps corresponding to the 16-core aviation plug and the 21-core aviation plug are arranged at intervals from each other, and each group of indicator lamps is provided with two rows.

[0018] The cable on-off detection device provided by the utility model comprises a main control module, a first cable access plug and a second cable access plug, wherein the main control module comprises a single-chip microcomputer capable of controlling the driving state of the corresponding indicator lamp driving end according to the comparison between the sampling voltage of each detection end and the preset reference voltage, and each indicator lamp driving end is connected with an indicator lamp circuit; when the measured cable is connected between the first cable access plug and the second cable access plug, the first voltage dividing resistor and the second voltage dividing resistor connected by the two plugs are connected by the measured cable, when the measured cable is disconnected due to virtual welding, the sampling voltage of the corresponding detection end is equal to the access voltage of the first voltage dividing resistor; when the measured cable is effectively welded, the sampling voltage of the corresponding detection end is the voltage dividing value of the access voltage of the first voltage dividing resistor, so that the single-chip microcomputer can automatically identify the welding quality of the measured cable according to the sampling voltage of the detection end and drive the corresponding indicator lamp to light up. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a main module architecture schematic view of the cable on-off detection device in the utility model embodiment.

[0020] Figure 2 It is a circuit structure view of a single-chip microcomputer of the cable on-off detection device in the utility model embodiment.

[0021] Figure 3 It is a circuit structure view of the first cable access plug of the cable on-off detection device in the utility model embodiment.

[0022] Figure 4 It is a circuit structure view of the second cable access plug of the cable on-off detection device in the utility model embodiment.

[0023] Figure 5 It is a circuit structure view of the first voltage conversion circuit of the cable on-off detection device in the utility model embodiment.

[0024] Figure 6 It is a circuit structure view of the reset circuit of the cable on-off detection device in the utility model embodiment.

[0025] Figure 7 It is a product outer structure schematic view of the cable on-off detection device in the utility model embodiment.

[0026] The following specific embodiments will further illustrate the utility model in combination with the above drawings. DETAILED DESCRIPTION

[0027] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] To solve the problem of time-consuming and labor-consuming, low detection efficiency and not conducive to mass production in the prior art, the utility model provides a kind of cable continuity detection device, and first cable access plug and second cable access plug are respectively connected to voltage divider power supply and ground through voltage divider resistor, and main control module includes the single-chip microcomputer of the drive state of corresponding indicator lamp drive end that can be controlled according to the comparison of the sampling voltage of each detection end and preset reference voltage, and the middle node of first cable access plug and second cable access plug is connected to the detection end of main control module, and each indicator lamp drive end is connected with indicator lamp circuit;When the cable to be measured is connected between first cable access plug and second cable access plug, the single-chip microcomputer can automatically identify the welding quality of the cable to be measured according to the sampling voltage of detection end, and drive corresponding indicator lamp to light indication, so that the continuity of cable after welding can be automatically detected, and detection efficiency and production efficiency can be effectively improved.

[0031] Specifically, as shown in Figure 1 The cable continuity detection device mainly includes: main control module 110, first cable access plug 131 and second cable access plug 132.

[0032] Main control module 110 includes single-chip microcomputer 111 that can control the drive state of corresponding indicator lamp drive end according to the comparison of the sampling voltage of each detection end and preset reference voltage, and each indicator lamp drive end is connected with indicator lamp circuit 120.

[0033] The access points of the first cable access plug 131 are connected to the output end of the power module 160 through the first voltage dividing resistor 141, and the access points of the second cable access plug 132 are grounded through the second voltage dividing resistor 142, so that when the two ends of the measured cable are respectively connected to the first cable access plug 131 and the second cable access plug 132, the voltage of the access points of the first cable access plug 131 can represent the on-off state of the corresponding line of the measured cable. Specifically, as shown in Figure 5 , the power module provides a voltage of 3.3V, the first voltage dividing resistor 141 and the second voltage dividing resistor 142 have the same resistance, when the measured cable has a virtual soldering circuit, the sampling voltage is 3.3V, and when the measured cable is effectively soldered, the sampling voltage is 1.65V. The reference voltage can be set to 2.5V, which can effectively distinguish between virtual soldering and effective soldering cables.

[0034] In a specific example, the indicator light circuit includes a light-emitting diode and a current-limiting resistor, the cathode of the light-emitting diode is connected to the corresponding indicator light driving end, and the anode of the light-emitting diode is connected to the output end of the power module through the current-limiting resistor.

[0035] Considering that the number of cable cores has various specifications, in order to improve the available test range, in the embodiment, the master control module is provided with two groups, and the single-chip microcomputer and its peripheral circuit are correspondingly provided with two groups, which can improve the number of test channels and expand the range of testable cable core specifications.

[0036] Specifically, as shown in Figure 2 , Figure 3 and Figure 4 , the single-chip microcomputers of the two master control modules each include 16 detection ends and 16 indicator light driving ends, the first voltage dividing resistor and the second voltage dividing resistor each include a plurality of resistance arrays, the first cable access plug includes a 40-core aviation plug CN1, the second cable access plug includes a 16-core aviation plug P1 and a 21-core aviation plug P2, and the single-chip microcomputers of the two master control modules each include 16 detection ends (PC0 to PC12, PB0, PB5 to PB7, PB12 to PB15, PA0 to PA7) and 16 indicator light driving ends (U1-IN0 to U1-IN15).

[0037] The 40-core aviation plug CN1 is connected with four first resistance arrays (RN1 to RN4), the 16-core aviation plug P1 is connected with two second resistance arrays, and the 21-core aviation plug P2 is connected with two third resistance arrays. The first resistance array includes eight single resistors, the second resistance array includes five single resistors, and the third resistance array includes ten single resistors.

[0038] To realize system power supply, in the embodiment, the power supply module 160 includes a power supply connector, a power supply switch, a first voltage conversion circuit and a second voltage conversion circuit, wherein the first voltage conversion circuit and the second voltage conversion circuit have the same structure, the input end thereof is connected to the output end of the power supply connector through the power supply switch, and the output end of the first voltage conversion circuit and the output end of the second voltage conversion circuit are connected to the power supply ends of the two single-chip microcomputers, specifically, as shown in Figure 5 , the first voltage conversion circuit is mainly used for converting 5V direct current voltage into 3.3V direct current voltage, wherein the power supply connector is, for example, a USB connector, which can provide 5V direct current voltage access, and the 5V direct current voltage is also used for the communication voltage of the program burning of the single-chip microcomputer.

[0039] In the embodiment, the two first row resistances corresponding to one single-chip microcomputer are respectively connected to the output ends of the first voltage conversion circuit and the second voltage conversion circuit, for example, as shown in Figure 3 , the two first row resistances (RN1, RN2) corresponding to the first single-chip microcomputer U1 are respectively connected to the output voltages of the first voltage conversion circuit and the second voltage conversion circuit, so that the power consumption in the detection can be shared on the two voltage conversion circuits, the use loss of the system is balanced, and the service life of the whole system is improved.

[0040] To facilitate continuous detection, in the embodiment, the main control module further includes a reset circuit connected to the single-chip microcomputer, the reset circuit includes a reset switch, and the two reset circuits have the same structure, wherein the specific structure of one of the reset circuits is, for example, as shown in Figure 6 .

[0041] To improve the fault positioning capability, in the embodiment, the two single-chip microcomputers are also communicatively connected, and one of the two single-chip microcomputers is also connected with a display screen, so that the wire core number of the virtual welding can be displayed on the display screen.

[0042] To reduce resource waste, in the embodiment, the second cable access plug 132 is mainly used for grounding connection and is provided with a 16-core aviation plug and a 21-core aviation plug, which can be respectively enabled to select a suitable aviation plug according to the specific wire core number of the measured cable.

[0043] And to facilitate the distinction when being completely enabled, in the embodiment, as shown in Figure 7 , the first group of indicator lights 121 and the second group of indicator lights 122 corresponding to the 16-core aviation plug P1 and the 21-core aviation plug P2 are arranged at intervals, so as to intuitively distinguish the measured cable where the fault wire core is located, and each group of indicator lights is provided with two rows, which can be arranged in position with the two groups of test channels of the two single-chip microcomputers, so as to confirm the single-chip microcomputer corresponding to the current test channel and facilitate the reset operation.

[0044] The first reset switch K1 and the second reset switch K2 are arranged at intervals and are arranged in different areas from the power switch SW1. The first reset switch K1, the second reset switch K2, the power switch SW1 and the display screen 151 are arranged by the upper surface of the shell 101; the 16-core aviation plug P1, the 21-core aviation plug P2 and the 40-core aviation plug CN1 are arranged at the side of the shell 101, so as to avoid the shielding of the measured cable to the upper indication area and the switch operation area.

[0045] The cable on-off detection device provided by the utility model can automatically detect the on-off condition of the welded cable, can effectively improve the detection efficiency and can improve the production efficiency. Different aviation plugs can be selected according to the core quantity of the cable, the detection compatibility of the cables with various core specifications is realized, and the application range is improved.

[0046] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above-described embodiments only express several specific implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A cable continuity detection device, characterized in that, include: The main control module, the first cable connector, and the second cable connector, wherein, The main control module includes a microcontroller that can control the driving state of the corresponding indicator light driver terminal based on the comparison between the sampling voltage of each detection terminal and the preset reference voltage. Each indicator light driver terminal is connected to an indicator light circuit. Each access point of the first cable access plug is connected to each of the detection terminals in a corresponding manner, and each access point of the first cable access plug is also connected to the output terminal of the power module through a first voltage divider resistor. Each access point of the second cable connector is grounded through a second voltage divider resistor, so that when the two ends of the cable under test are connected to the first cable connector and the second cable connector respectively, the voltage at each access point of the first cable connector can characterize the continuity of the corresponding line of the cable under test.

2. The cable continuity detection device according to claim 1, characterized in that, The indicator circuit includes a light-emitting diode and a current-limiting resistor. The cathode of the light-emitting diode is connected to the corresponding indicator driving terminal, and the anode of the light-emitting diode is connected to the output terminal of the power module through the current-limiting resistor.

3. The cable continuity detection device according to claim 1, characterized in that, The main control module is configured in two groups.

4. The cable continuity detection device according to claim 3, characterized in that, Both the first and second voltage divider resistors include multiple resistor arrays. The first cable connector includes a 40-pin aviation connector, and the second cable connector includes a 16-pin aviation connector and a 21-pin aviation connector. The microcontrollers of both main control modules include 16 detection terminals and 16 indicator light driver terminals. The 40-pin connector has four first resistor arrays, the 16-pin connector has two second resistor arrays, and the 21-pin connector has two third resistor arrays. The first resistor arrays include eight single resistors, the second resistor arrays include five single resistors, and the third resistor arrays include ten single resistors.

5. The cable continuity detection device according to claim 4, characterized in that, The power module includes a power connector, a power switch, a first voltage conversion circuit, and a second voltage conversion circuit. The input terminals of the first voltage conversion circuit and the second voltage conversion circuit are connected to the output terminal of the power connector through the power switch. The output terminals of the first voltage conversion circuit and the second voltage conversion circuit are respectively connected to the power supply terminals of the two microcontrollers.

6. The cable continuity detection device according to claim 5, characterized in that, The two first resistor arrays corresponding to the single-chip microcomputer are respectively connected to the output terminals of the first voltage conversion circuit and the second voltage conversion circuit.

7. The cable continuity detection device according to claim 3, characterized in that, The main control module also includes a reset circuit connected to the microcontroller, and the reset circuit includes a reset switch.

8. The cable continuity detection device according to claim 3, characterized in that, The two microcontrollers are connected in communication, and one of the microcontrollers is also connected to a display screen.

9. The cable continuity detection device according to claim 4, characterized in that, Two sets of indicator lights, corresponding to the 16-pin and 21-pin aviation connectors respectively, are spaced apart from each other, and each set of indicator lights has two rows.

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