CN111638473A - Push rod cable integrated detection device and detection method thereof - Google Patents
Push rod cable integrated detection device and detection method thereof Download PDFInfo
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- CN111638473A CN111638473A CN202010514896.0A CN202010514896A CN111638473A CN 111638473 A CN111638473 A CN 111638473A CN 202010514896 A CN202010514896 A CN 202010514896A CN 111638473 A CN111638473 A CN 111638473A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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Abstract
The invention discloses a push rod cable integrated detection device and a detection method thereof, wherein the detection device comprises: the device comprises a pulse generating circuit, an automatic scanning circuit, a connection state indicating circuit, a self-checking control circuit and a tool fixture. The pulse generating circuit is electrically connected with the automatic scanning circuit, the positive and negative electrodes of the automatic scanning circuit are respectively connected with the positive and negative input ends of the tooling jig to form an instrument main circuit, and the positive and negative output ends of the tooling jig are connected with two ends of a tested cable; the connection state indicating circuit is connected in series on the instrument main line; the self-checking control circuit is arranged on the instrument main line in parallel. The device can be after the mill finishes production, can the high-efficient test push rod cable integrated break-make, mix line and line order and whether satisfy the product requirement to replace traditional universal meter test method.
Description
Technical Field
The invention belongs to the technical field of cable detection, and relates to a push rod cable integrated detection device and a detection method thereof.
Background
The heliostat push rod cable integration is applied to connection of a push rod motor side of a light-gathering and heat-collecting system and control end equipment, and comprises a push rod cable and two parts of a plug-in terminal assembly at two ends of the push rod cable. At present, push rod cable products at home and abroad adopt a plurality of cables for power supply and control respectively, and the push rod cable products comprise a motor cable, a sensor cable and a control cable. The cable is a comprehensive cable and consists of 4 subunits, namely a motor cable subunit, a Hall sensor cable subunit, a front limiting subunit and a rear limiting subunit. The cable integrates the characteristics of power supply and signal transmission, reduces the wiring quantity, the outer diameter of the cable and the cost, and can be used for replacing a plurality of existing cables at home and abroad.
The cable is made up of 16 conductors, each conductor being connected to its corresponding connector terminal. In order to ensure the product quality, the push rod cable integration is subjected to on-off, mixed line and sequencing tests before delivery. The on-off test is used for detecting whether each conductor and the connector are conducted, the mixed line test is used for detecting whether short circuits exist among the conductors, and the sequencing test is used for detecting whether the connector and the corresponding cable connecting line sequence are correct. The conduction test of the conventional cable is to conduct conduction test on each conductor of the cable one by using equipment such as a multimeter, a battery lamp or a doorbell.
When the cable is conducted, an indication signal is sent out; when not conducting, there is no indication signal. The mixed wire detection of the cable is to connect the indicating equipment between the conductors to test one by one, and the wire sequence detection is to manually identify the color code and the serial number of each single wire. Therefore, when the number of the cable cores is large, the detection times are multiplied. It is calculated that the number of detections will be up to 120 for a 16 conductor cable.
The patent number CN203535154U invention relates to a cable core on-off detection device, which comprises an opposite line end and a wiring end, wherein an opposite line terminal, a plurality of lamp beads and a switch are arranged on a shell of the opposite line end, one end of a loop formed by connecting the plurality of lamp beads in parallel is connected with a power supply arranged in the shell through the switch, and the other end of the loop formed by connecting the plurality of lamp beads in parallel is connected with the opposite line terminal; the shell of the wiring terminal is provided with a plurality of wire clamping terminals and a grounding terminal, and the end parts of the plurality of wire clamping terminals extending into the shell of the wiring terminal are connected in parallel and then connected with the end part of the grounding terminal in the shell of the wiring terminal. The invention can independently complete the detection work by only one operator, and particularly under the condition that the cable is deeply buried underground, the detection process is very quick and convenient, the integral working efficiency is improved, and the time is saved.
However, the device is used for detecting the on-off of the wire cores of the deeply buried cable, can only indicate the on-off state of a single wire core, and cannot judge the short circuit and the wire sequence of the wire cores.
Patent No. CN205539291U invention provides a cable circuit on-off test system, which comprises: the PC104 bus and the PC104 bus are respectively connected with the data acquisition board, the I/O board and the CPU board, the CPU board is respectively connected with the system power supply module and the man-machine interface circuit, the I/O board is respectively connected with the first relay driver and the second relay driver, the first relay driver is connected with the first relay matrix, and the second relay driver is connected with the second relay matrix. The test device is suitable for automatic test of cables.
However, the technology adopts a software and hardware mixed control system to operate, and the user maintenance difficulty is high. The switching between the cable cores is controlled by adopting the relay, the switching speed is low, and the reliability is poor.
The patent number CN2102680849A discloses a cable sequence identification method and device based on machine vision and fuzzy control, which mainly includes the steps of collecting standard module images and images containing cable sequence information to be processed, differentiating the collected target images and the standard images, preprocessing the differentiated images, extracting cable features in the images and calculating corresponding positions thereof, calculating an included angle between a target cable and a specified position, and controlling a stepper motor to drive the target cable to rotate by using fuzzy rules. The cable sequence detection and identification device can automatically detect and identify the cable sequence and control the cable sequence to rotate to a specified position, thereby avoiding human errors and visual errors caused by manual identification, reducing potential safety hazards, saving manpower and material resources and reducing production cost.
The disadvantages are: visual identification has high requirements on the brightness and contrast of a detected object, and misjudgment is easily caused when illumination is insufficient or color spectrums are similar; the cable composed of various circularly twisted units is difficult to detect, and particularly when the same color spectrum exists among the units of the cable, machine vision cannot judge.
Disclosure of Invention
In order to solve the problems in the prior art, the invention develops the push rod cable integration detection device and the detection method thereof, and the device can efficiently test whether the on-off, the mixed line and the line sequence of the push rod cable integration meet the product requirements after the production is finished in a factory, thereby replacing the traditional multimeter test method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a push rod cable integrated detection device comprising: the device comprises a pulse generating circuit, an automatic scanning circuit, a connection state indicating circuit, a self-checking control circuit and a tool fixture;
the pulse generating circuit is electrically connected with the automatic scanning circuit, the positive and negative electrodes of the automatic scanning circuit are respectively connected with the positive and negative input ends of the tooling jig to form an instrument main circuit, and the positive and negative output ends of the tooling jig are connected with two ends of a tested cable;
the connection state indicating circuit is connected in series on the instrument main line;
the self-checking control circuit is arranged on the instrument main line in parallel.
As a further improvement of the invention, the pulse generating circuit comprises a timer, the pulse frequency is changed by adjusting the RC constant through a potentiometer, and timing pulses of the timer are output from the DC end.
As a further improvement of the invention, the automatic scanning circuit comprises two four-NAND gates and two counters, when the counter counts to the highest bit output high level, the current counter stops counting through NAND gate control, and the other counter starts counting, so that the two counters realize cycle counting.
As a further improvement of the present invention, the connection status indicating circuit includes two rows of light emitting diodes;
the LED array comprises a plurality of LEDs, a cable conductor, a plurality of LEDs and a plurality of LEDs, wherein the LEDs in the row A are connected with the end A of a tested cable, the LEDs in the row B are connected with the end B of the cable, and each pair of LEDs is connected with one cable conductor.
As a further improvement of the invention, the connection state indicating circuit further comprises an audio generating circuit, and a signal generated when the conductor in the instrument main line is conducted and the pulse generating circuit jointly drive the audio generating circuit to realize sound output.
As a further improvement of the invention, the self-checking control circuit comprises a bidirectional analog switch, and when the control end is at a high level, the bidirectional analog switch is conducted.
As a further improvement of the invention, the tool fixture comprises an anti-reverse-insertion connector, a printed circuit board and a handheld box, wherein the anti-reverse-insertion connector and the printed circuit board are both arranged on the handheld box, the anti-reverse-insertion connector is electrically connected with the printed circuit board, the printed circuit board is electrically connected with the positive electrode and the negative electrode of the automatic scanning circuit, and the anti-reverse-insertion connector is used for being connected with two ends of a tested cable.
The detection method based on the push rod cable integrated detection device comprises the following steps:
respectively connecting the A ends and the B ends of all conductors integrated by the tested cable into a circuit at one time through a tooling fixture;
outputting a pulse by a pulse generating circuit, and driving an automatic scanning circuit to generate a first high-level signal; the high-level signal, the tool jig and the first conductor of the tested cable form a loop;
observing the indication state of the connection state indication circuit, and judging whether the corresponding cable conductor is conducted;
the pulse generating circuit continuously sends out a pulse signal to drive the automatic scanning circuit to generate a second high level signal and judge the conduction state of a second conductor;
and repeating the process until the conduction states of all the conductors integrated by the tested cable are judged.
As a further improvement of the invention, the connection status indicating circuit is a light-on indication and a sound indication,
observe the bright lamp and instruct the lighting condition, judge whether the conductor switches on and specifically include:
if the end A is lightened, and the corresponding indicator lamp of the end B is not lightened, the fact that the circuit conductor is broken is indicated;
if the A end is lighted, and a plurality of B ends are lighted, the mixed line of the conductor is indicated;
if the A end is sequentially lightened, and the lightening sequence of the B end is inconsistent with the sequence of the A end, the cable line sequence is wrong.
Compared with the prior art, the invention has the following advantages:
the invention discloses a push rod cable integrated detection device which comprises a pulse generation circuit, an automatic scanning circuit, a connection state indicating circuit, a self-checking control circuit and a tooling jig. A loop is formed by the high-level signal, the tool jig and the first conductor of the tested cable, the corresponding connection state indicating circuit is lightened, the lightening condition is observed, and whether the corresponding cable conductor is conducted or not can be judged. The instrument is a universal multi-core cable tester, can be used for push rod cable integrated detection equipment, and can be used for testing other cables after the tool is changed. The structure is simple, the test is convenient, and the time consumption is short.
The test method can realize the rapid measurement of all conductors integrated by the push rod cable, and can efficiently test whether the on-off, mixed line and line sequence of the push rod cable integration meet the product requirements after the production is finished in a factory, thereby replacing the traditional test method of a universal meter.
Drawings
FIG. 1 is a schematic diagram of a push rod cable integrated detection device according to the present invention;
FIG. 2 is a schematic view of a tooling fixture of the present invention;
fig. 3 is a schematic diagram of the inventive circuit.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention develops a detection method and a detection device, so that whether the on-off, mixed line and line sequence of the push rod cable integration meet the product requirements can be efficiently tested after the production is finished in a factory, and the traditional multimeter test method is replaced.
As shown in fig. 1, a push rod cable integrated detection device includes: the device comprises a pulse generating circuit 1, an automatic scanning circuit 2, a connection state indicating circuit 3, a self-checking control circuit 4 and a tooling fixture 5.
The pulse generating circuit 1 is electrically connected with the automatic scanning circuit 2, the positive and negative electrodes of the automatic scanning circuit 2 are respectively connected with the positive and negative input ends of the tooling jig 5 to form an instrument main circuit, and the positive and negative output ends of the tooling jig 5 are connected with two ends of the tested cable 6;
the connection state indicating circuit 3 is connected in series on the instrument main line;
the self-checking control circuit 4 is arranged on the instrument main line in parallel.
The pulse generating circuit 1 comprises a timer, the RC constant is adjusted by a potentiometer to change the pulse frequency, the timing pulse of the timer is output from a DC end, and the duty ratio of the pulse is not changed by adjusting the frequency.
The automatic scanning circuit 2 comprises two four-NAND gates and two Johnson counters, when the counter counts to the highest bit and outputs high level, the current counter stops counting through NAND gate control, the other counter is started to count, and two counters are circularly counted.
The invention provides a push rod cable integrated detection method, which comprises the following steps:
integrating the A ends and the B ends of all conductors of the push rod cable into a circuit through a tooling fixture 5 at one time respectively;
the pulse generating circuit 1 outputs a pulse to drive the automatic scanning circuit 2 to generate a first high level signal;
the high-level signal, the tool fixture 5 and the first conductor of the tested cable 6 form a loop, the corresponding light emitting diodes LED _ A and LED _ B are lightened, and meanwhile, the audio circuit is driven to send out an alarm sound.
And observing the lighting condition of the LED, and judging whether the corresponding cable conductor is conducted or not.
The pulse generating circuit continuously sends out a pulse signal to drive the automatic scanning circuit 2 to generate a second high level signal, and the conduction state of a second conductor is judged.
By repeating the above process, the conduction state of all the conductors forming the push rod cable assembly can be judged.
In the corresponding LED, if the end A is lightened, and the corresponding indicating lamp at the end B is not lightened, the fact that the circuit conductor is broken is indicated;
in the corresponding LED, if A is lighted, and B is lighted in a plurality, the mixed line exists in the conductor.
When the corresponding LED _ A is sequentially lightened, and the lightening sequence of the LED _ B is inconsistent with the sequence of the LED _ A, the cable line sequence is wrong.
When the cable is not in a communication state during actual testing, the self-checking switch can be closed to perform self-checking on the instrument, and misjudgment caused by failure of the LED is prevented.
The following detailed description of the various components of the invention refers to specific embodiments:
as shown in fig. 1, fig. 2 and fig. 3, the push rod cable integrated detection device provided by the present invention includes a pulse generation circuit 1, an automatic scanning circuit 2, a connection state indicating circuit 3, a self-checking control circuit 4 and a tooling fixture 5.
1) Pulse generating circuit 1
Is composed of a timer U1 and peripheral circuits to generate pulse clock signals. Adjusting RV1 may control the pulse frequency to vary the test speed. The pulse signal is output from the DC terminal of U1, and the duty cycle of the pulse is kept constant while adjusting the frequency, so as to ensure that the indicating circuit 3 has sufficient response at different test speeds.
2) Auto-scan circuit 2
The four-NAND gate U2 and U3 and Johnson counters U4 and U5 are combined. When the circuit is powered on, U4 and U5 are reset, the output of Q9 is low level, U2: and opening the B door. At the moment, clock pulses enter a U4 to drive counting to count in sequence; until Q9 outputs high, turn U2 off: b door, while opening U3: the a-gate drive U5 counts in turn until its Q9 outputs a high level to close U3: and the A gate simultaneously resets the U4, so that the cyclic counting and seamless connection of the U4 and the U5 are realized, and the purposes of continuous scanning and automatic detection are achieved.
3) Connection state indicating circuit 3
Consists of A, B two rows of LED indicator lamps, U3 and buzzer BUZ 1. The row A is connected with the end A of the cable, the row B is connected with the end B of the cable and is arranged on a front panel of the instrument, each pair of LEDs represents a cable conductor, and the number of the corresponding conductor is marked on the panel. By observing the lighting condition of the LED, the connection state of the cable conductor can be judged. The signal when the conductor is conducted and the pulse generating circuit drive the audio frequency generating circuit together, so that conducted sound output is realized, and the auxiliary test effect is achieved.
4) Self-checking control circuit 4
Consists of four bidirectional analog switches U6-U10. When the control end C is at a high level, the switch is closed, the conditions that the cables are all conducted and normally connected are simulated, and the self-checking inside the equipment is realized.
5) Tooling fixture 5
The device comprises a special tool set which is designed for the integration of the push rod cable. As shown in fig. 2.
The tooling fixture 5 includes an anti-reverse-insertion connector 51, a printed wiring board 52, and a hand-held box 53. The tool is connected with the instrument main line through the test lead and the aviation connector, and operation is convenient.
The technical scheme of the invention has the following beneficial effects:
the conventional multimeter conduction detection method is used for comprehensively detecting the line sequence and the conduction of the cable, two persons are required to simultaneously test the cable from two ends of the cable for 120 times, and the time consumption is not less than 2 minutes after skilled operation. When the instrument is used for testing, the operation can be completed by only 1 person, and the consumed time is not more than 1 minute.
Compared with a common testing instrument, the instrument has the following characteristics:
1. the cable which is conducted by only one conductor at least can be tested without the need of forming a loop by the tested conductor and other conductors; cables that are "one-to-many conductive" can also be tested.
2. The measured conductor is electronically scanned, and the measuring speed is high.
3. The electronic switch integrated circuit is adopted to switch the tested conductor without a relay, the switching speed is high, and mechanical faults cannot be generated.
4. The instrument is a general multi-core cable tester, and can be used for testing other cables after the tool is changed besides being used for push rod cable integrated detection equipment.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.
Claims (9)
1. The utility model provides an integrated detection device of push rod cable which characterized in that includes: the device comprises a pulse generating circuit (1), an automatic scanning circuit (2), a connection state indicating circuit (3), a self-checking control circuit (4) and a tooling fixture (5);
the pulse generating circuit (1) is electrically connected with the automatic scanning circuit (2), the positive and negative electrodes of the automatic scanning circuit (2) are respectively connected with the positive and negative input ends of the tooling jig (5) to form an instrument main circuit, and the positive and negative output ends of the tooling jig (5) are connected with the two ends of the tested cable (6);
the connection state indicating circuit (3) is connected in series on the instrument main line;
the self-checking control circuit (4) is arranged on the instrument main line in parallel.
2. The push rod cable integrated detection device according to claim 1, wherein the pulse generation circuit (1) comprises a timer, the pulse frequency is changed by adjusting the RC constant through a potentiometer, and the timing pulse of the timer is output from the DC terminal.
3. The push rod cable integrated detection device according to claim 1, wherein the automatic scanning circuit (2) comprises two four-nand gates and two counters, when the counter counts to the highest output high level, the nand gate controls to stop the current counter counting and start the other counter counting, so as to realize the cycle counting of the two counters.
4. The push rod cable integrated detection device according to claim 1, wherein the connection status indication circuit (3) comprises two rows of light emitting diodes;
the row A of light-emitting diodes are connected with the end A of the tested cable (6), the row B of light-emitting diodes are connected with the end B of the cable, and each pair of LEDs is connected with one cable conductor.
5. The push rod cable integrated detection device according to claim 4, wherein the connection state indication circuit (3) further comprises an audio generation circuit, and a signal generated when a conductor in the instrument main line is conducted and the pulse generation circuit (1) jointly drive the audio generation circuit to realize sound output.
6. The push rod cable integrated detection device according to claim 1, wherein the self-checking control circuit (4) comprises a bidirectional analog switch, and when the control terminal is at a high level, the bidirectional analog switch is turned on.
7. The push rod cable integration detection device according to claim 1, wherein the tooling jig (5) comprises an anti-reverse-plugging connector (51), a printed circuit board (52) and a handheld box (53), the anti-reverse-plugging connector (51) and the printed circuit board (52) are arranged on the handheld box (53), the anti-reverse-plugging connector (51) is electrically connected with the printed circuit board (52), the printed circuit board (52) is electrically connected with a positive electrode and a negative electrode of the automatic scanning circuit (2), and the anti-reverse-plugging connector (51) is used for being connected with two ends of a tested cable (6).
8. The detection method of the push rod cable integrated detection device according to any one of claims 1 to 7, characterized by comprising the following steps:
the A ends and the B ends of all the conductors integrated by the tested cable (6) are respectively connected into the circuit at one time through the tooling jig (5);
a pulse generating circuit (1) outputs a pulse to drive an automatic scanning circuit (2) to generate a first high-level signal; the high-level signal, the tool fixture (5) and the first conductor of the tested cable (6) form a loop;
observing the indication state of the connection state indication circuit (3) and judging whether the corresponding cable conductor is conducted;
the pulse generating circuit (1) continuously sends out pulse signals to drive the automatic scanning circuit (2) to generate a second high-level signal and judge the conduction state of a second conductor;
the above process is repeated until the conduction state of all the conductors integrated by the tested cable (6) is judged.
9. The detection method according to claim 8, wherein the connection state indicating circuit (3) is a light-on indication and a sound indication,
observe the bright lamp and instruct the lighting condition, judge whether the conductor switches on and specifically include:
if the end A is lightened, and the corresponding indicator lamp of the end B is not lightened, the fact that the circuit conductor is broken is indicated;
if the A end is lighted, and a plurality of B ends are lighted, the mixed line of the conductor is indicated;
if the A end is sequentially lightened, and the lightening sequence of the B end is inconsistent with the sequence of the A end, the cable line sequence is wrong.
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| CN202010514896.0A CN111638473B (en) | 2020-06-08 | 2020-06-08 | Push rod cable integrated detection device and detection method thereof |
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| CN202010514896.0A CN111638473B (en) | 2020-06-08 | 2020-06-08 | Push rod cable integrated detection device and detection method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111929617A (en) * | 2020-10-10 | 2020-11-13 | 天津飞旋科技有限公司 | Cable tester, cable testing method and cable testing system |
| CN112083354A (en) * | 2020-09-22 | 2020-12-15 | 东莞市索展智能科技有限公司 | Line sequence conduction testing device |
| CN114665417A (en) * | 2022-03-28 | 2022-06-24 | 徐州科华能源科技有限公司 | Photovoltaic cable wiring device and method |
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| CN114665417A (en) * | 2022-03-28 | 2022-06-24 | 徐州科华能源科技有限公司 | Photovoltaic cable wiring device and method |
| CN114665417B (en) * | 2022-03-28 | 2022-10-18 | 徐州科华能源科技有限公司 | Photovoltaic cable wiring device and method |
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