CN219799718U - Control cable detection device - Google Patents
Control cable detection device Download PDFInfo
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- CN219799718U CN219799718U CN202321131302.3U CN202321131302U CN219799718U CN 219799718 U CN219799718 U CN 219799718U CN 202321131302 U CN202321131302 U CN 202321131302U CN 219799718 U CN219799718 U CN 219799718U
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- 238000001514 detection method Methods 0.000 title claims abstract description 126
- 239000003990 capacitor Substances 0.000 claims description 26
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013072 incoming material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of cable detection, and particularly provides a control cable detection device which comprises a control loop, a power terminal connected with the control loop and used for being connected with an external power supply, and a detection terminal pair used for being connected with a detection cable; the control loop comprises N control branches which are connected in sequence, and the Nth control branch is connected with the first control branch; each detection terminal pair comprises a control detection terminal and a grounding detection terminal; one end of a wire core of the detection cable is connected to the control detection terminal, and the other end of the wire core is connected to the grounding detection terminal of the same detection terminal pair; each control branch is provided with a light emitting diode for indicating the detection state of the cable core. The cable detection state can be obtained only by connecting the cable core into the cable pressing terminal of the device after the power is on, so that the cable checking efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of cable detection, in particular to a control cable detection device.
Background
In the control circuit, one multi-core cable has less two cores and three cores, and more than ten cores and tens of cores. Cable detection is a necessary step when problems with the control loop cannot be quickly ascertained. Meanwhile, in the incoming material detection of cables, particularly finished cables subjected to external processing, due to the limitation of detection efficiency, the appearance detection is only carried out on the cables, and the hidden danger is certainly buried on the safety problem of a control loop. Detecting the on-off of the control loop cable is the root for solving the safety problem.
The current mode of detecting cable on-off and wire core short circuit is mainly to use the on-off gear of the universal meter to measure. The principle is that the universal meter is on the break-make gear, two meter pens respectively contact the two ends of a wire, and when the resistance value of the wire is very small (namely, the wire is regarded as being conducted), the universal meter has an acousto-optic prompt. When the multimeter is used for measuring the on-off state of the multi-core wire, two meter pens are required to be respectively contacted with the two ends of the same wire core, the on-off state of the wire core is judged according to the prompt of the multimeter, and other wire cores are measured in the same manner. When the short circuit condition exists between the wire cores, one meter pen is required to contact one wire core (wire core 1), and the other meter pen is required to contact the other wire cores respectively. If no conduction prompt exists, only the wire core 1 can be indicated to be unbroken. And measuring the rest wire cores in sequence.
The disadvantage of testing the cable of the control loop with a multimeter is that: 1. the on-off and short circuit tests cannot be measured simultaneously, and only one test can be performed before the other test; 2. multiple measurements, especially short-circuit tests, are required, and N sets of 1-to-many measurements are required to measure accurate results. This test method is time consuming and laborious.
Disclosure of Invention
Aiming at the problems of cable on-off or short circuit measurement by using a universal meter in the prior art, the utility model provides a control cable detection device.
The technical scheme of the utility model provides a control cable detection device which comprises a control loop, a power terminal connected with the control loop and used for being connected with an external power supply, and a detection terminal pair used for being connected with a detection cable;
the control loop comprises N control branches which are connected in sequence, and the Nth control branch is connected with the first control branch;
each detection terminal pair comprises a control detection terminal and a grounding detection terminal; one end of a wire core of the detection cable is connected to the control detection terminal, and the other end of the wire core is connected to the grounding detection terminal of the same detection terminal pair;
each control branch is provided with a light emitting diode for indicating the detection state of the cable core. The LED can reflect the on-off of the control branch through the switching of the on-off state, and is used for describing the state of the detected circuit.
As the optimization of the technical scheme of the utility model, each control branch also comprises a triode, a capacitor and two resistors;
the collector of the triode is connected with the cathode of the light-emitting diode, and the anode of the light-emitting diode is connected to the positive end of the power supply terminal through a resistor; the base electrode of the triode is connected to the positive end of the power supply terminal through another resistor; the emitter of the triode is connected to a control detection terminal of one detection terminal pair, and the base of the triode is also connected to the collector of the triode in the next control branch through a capacitor;
the base electrode of the triode in the Nth control branch is connected to the collector electrode of the triode in the first control branch through a capacitor.
Preferably, the device further comprises a switching power supply connected with the power supply terminal and used for converting an external power supply into a set direct-current voltage value, and the switching power supply is connected with each control branch.
Preferably, the anode of the light emitting diode is connected to the positive terminal of the switching power supply through a resistor, and the ground detection terminal of each detection terminal pair is connected to the negative terminal of the switching power supply.
As the optimization of the technical scheme of the utility model, the device also comprises a shell, wherein the switching power supply and the control loop are arranged inside the shell;
the power supply terminal and the detection terminal pair are provided outside the housing. And the cable connection is conveniently detected for testing.
As the preferable choice of the technical scheme of the utility model, the shell is provided with a hollowed-out indicator light window for observing the state of the internal light-emitting diode.
Preferably, the casing is made of insulating material and is used for installing and protecting the internal switching power supply and the control circuit.
Preferably, the control detection terminal and the ground detection terminal in the detection terminal pair are connected through the wire core of the detection cable, or the control detection terminal and the ground detection terminal in the detection terminal pair are short-circuited.
As a preferred embodiment of the present utility model, the switching power supply is connected to an external 220v ac power through a power terminal, and outputs 5v dc power to each control branch. A dc power supply is provided to the control loop.
The main components of the control loop are a resistor, a capacitor, a triode and a light emitting diode, wherein the resistor is used for limiting the collector current of the triode to prevent the triode and the light emitting diode from burning out and pulling down the base electrode voltage of the triode. The capacitor can realize the time delay control of the on-off of the triode. The triode is used for realizing the switch control of the light emitting diode. The LED can reflect the on-off state of the loop through the switching of the on-off state, and is used for describing the state of the detected cable.
Working principle: after the control detection terminal and the grounding detection terminal of the detection terminal pair are well connected (wherein the control detection terminal and the grounding detection terminal are connected through a wire core of the detection cable), the base electrode of the first control branch triode is at a low potential, the force triode of the first control is cut off, and the first control branch light-emitting diode is turned off under the assumption that the triode of the second control branch is turned on, so that the light-emitting diode in the second control branch is turned on, the capacitor connected with the second control branch and the third control branch starts to be charged, and at the moment, the collector electrode of the triode of the second control branch is at a low potential. After the capacitor connected to the second control branch and the third control branch is charged, the base voltage of the triode of the first control branch begins to rise due to the self-discharging characteristic until the triode of the first control branch is turned on, and the triode of the nth control branch begins to turn on from off, so that the light emitting diode of each control branch is periodically turned on due to the switching function of the triode and the charging and discharging characteristic of the capacitor in sequence … ….
From the above technical scheme, the utility model has the following advantages:
the device is used for detecting the incoming materials of the finished cables, can perfect the function item of detecting the incoming materials of the cables, can eliminate hidden danger of the cables in advance, and prevents unnecessary faults from being generated when the equipment operates.
Compared with the conventional cable detection mode, the device can greatly improve the cable checking efficiency. The cable detection state can be obtained after the cable core is connected to the line pressing terminal of the device. For the finished wire with the plug, the opposite-side plug can be connected into the device in advance, and the opposite-side plug can be directly plugged with the cable plug to be tested to finish measurement, so that the efficiency of detecting batch cables is high.
In addition, the utility model has reliable design principle, simple structure and very wide application prospect.
It can be seen that the present utility model has outstanding substantial features and significant advances over the prior art, as well as its practical advantages.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a control cable detection device.
Fig. 2 is a control schematic diagram of the control cable detection device.
Fig. 3 is a schematic diagram of the control cable detection device detecting cable wiring.
In the figure, 100-housing, 101-indicator window, 200-switching power supply, 300-control loop, 400-power supply terminal.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1 and 2, the present embodiment provides a control cable detection device, which includes a control loop, and a pair of power terminals connected to the control loop and used for connecting an external power supply and detection terminals used for connecting a detection cable;
the control loop comprises N control branches which are connected in sequence, and the Nth control branch is connected with the first control branch;
each detection terminal pair comprises a control detection terminal and a grounding detection terminal; one end of a wire core of the detection cable is connected to the control detection terminal, and the other end of the wire core is connected to the grounding detection terminal of the same detection terminal pair;
each control branch is provided with a light emitting diode for indicating the detection state of the cable core. The LED can reflect the on-off of the control branch through the switching of the on-off state, and is used for describing the state of the detected circuit.
In some embodiments, each control branch further comprises a triode, a capacitor, and two resistors;
the collector of the triode is connected with the cathode of the light-emitting diode, and the anode of the light-emitting diode is connected to the positive end of the power supply terminal through a resistor; the base electrode of the triode is connected to the positive end of the power supply terminal through another resistor; the emitter of the triode is connected to a control detection terminal of one detection terminal pair, and the base of the triode is also connected to the collector of the triode in the next control branch through a capacitor;
the base electrode of the triode in the Nth control branch is connected to the collector electrode of the triode in the first control branch through a capacitor.
In some embodiments, the apparatus further comprises a switching power supply connected to the power supply terminal for converting an external power supply to a set dc voltage value, the switching power supply being connected to each control branch.
The anode of the light emitting diode is connected to the positive end of the switching power supply through a resistor, and the grounding detection terminal of each detection terminal pair is connected to the negative end of the switching power supply.
In some embodiments, the apparatus further comprises a housing 100, the switching power supply 200 and the control loop 300 being disposed inside the housing 100;
the power terminal 400 and the detection terminal pair are provided outside the housing 100. And the cable connection is conveniently detected for testing. The detection terminal pairs in the embodiment of the utility model comprise N detection terminal pairs, in particular X1 and Y1, X2 and Y2, … …, xn and Yn.
The casing 100 is provided with a hollowed-out indicator light window 101 for observing the state of the internal light emitting diode.
In some embodiments, the housing 100 is a housing of insulating material for mounting and protecting internal switching power supplies and control loops.
In some embodiments, the control detection terminal and the ground detection terminal in the detection terminal pair are connected by the core of the detection cable, or the control detection terminal and the ground detection terminal in the detection terminal pair are shorted.
The switching power supply 200 is connected to an external 220v ac power through a power terminal 400, and the switching power supply 200 outputs 5v dc power to the control loop 300. A dc power supply is provided to the control loop. That is, the power terminal is led out from the input end of the switch power supply, connected with single-phase 220V, L connected with the live wire and N connected with the zero wire.
The main components of the control loop are a resistor, a capacitor, a triode and a light emitting diode, wherein the resistor is used for limiting the collector current of the triode to prevent the triode and the light emitting diode from burning out and pulling down the base electrode voltage of the triode. The capacitor can realize the time delay control of the on-off of the triode. The triode is used for realizing the switch control of the light emitting diode. The LED can reflect the on-off state of the loop through the switching of the on-off state, and is used for describing the state of the detected cable.
Working principle: after the control detection terminal and the grounding detection terminal of the detection terminal pair are well connected (wherein the control detection terminal and the grounding detection terminal are connected through a wire core of the detection cable), the base electrode of the first control branch triode is at a low potential, the force triode of the first control is cut off, and the first control branch light-emitting diode is turned off under the assumption that the triode of the second control branch is turned on, so that the light-emitting diode in the second control branch is turned on, the capacitor connected with the second control branch and the third control branch starts to be charged, and at the moment, the collector electrode of the triode of the second control branch is at a low potential. After the capacitor connected to the second control branch and the third control branch is charged, the base voltage of the triode of the first control branch begins to rise due to the self-discharging characteristic until the triode of the first control branch is turned on, and the triode of the nth control branch begins to turn on from off, so that the light emitting diode of each control branch is periodically turned on due to the switching function of the triode and the charging and discharging characteristic of the capacitor in sequence … ….
The main components of the control loop are resistors, capacitors, triodes and light-emitting diodes. The resistor is used for limiting the collector current of the triode to prevent the triode and the light-emitting diode from burning out and pulling down the base electrode voltage of the triode. The capacitor can realize the time delay control of the on-off of the triode. The triode is used for realizing the switch control of the light emitting diode. The LED can reflect the on-off state of the loop through the switching of the on-off state, and is used for describing the state of the detected circuit. The power supply terminal is led out from the input end of the switching power supply, is connected with a single-phase 220V power supply, an L power supply wire and an N zero line. Specifically, as shown in fig. 2, the control loop includes N control branches, where a first control branch includes a triode VT1, a light emitting diode LED1, a capacitor C1, a resistor R1, and a resistor R2; the second control branch comprises a triode VT2, a light emitting diode LED2, a capacitor C2, a resistor R3 and a resistor R4; the Nth control branch comprises a triode VTn, a light emitting diode LEDn, a capacitor Cn, a resistor R2N-1 and a resistor R2N;
one end of a resistor R1 is connected to the anode of a light emitting diode LED1, the other end of the resistor R1 is connected to a positive end VCC of a switching power supply, the cathode of the light emitting diode LED1 is connected to a collector of a triode VT1, the base of the triode VT1 is connected to the collector of the triode VT2 through a resistor R2, the collector of the triode VT2 is connected to the cathode of the light emitting diode LED2 through a capacitor C1, the anode of the light emitting diode LED2 is connected to a positive end VCC of the switching power supply through a resistor R3, the base of the triode VT2 is connected to a collector of the triode VT3 through a resistor C2, the collector of the triode VT3 is connected to the cathode of the light emitting diode LED3 through a resistor R5, the base of the triode VT3 is connected to the positive end of the switching power supply through a resistor R6, the base of the triode VT3 is connected to the cathode of the next control branch through a capacitor C3, and the base of the triode is connected to the positive end VCC 2 through a resistor VCC 2, and the base of the triode is connected to the positive end VCC n of the switching power supply through a resistor VCC 1.
As shown in fig. 3, the power terminal is connected to a single-phase 220V power supply. The detection terminal is externally connected with a detected cable, and X and Y are respectively connected with two ends of the detected cable. X1 and Y1, X2 and Y2 … … Xn and Yn are respectively connected with two ends of each core of the tested cable. When the number of cores of the cable to be tested is smaller than the number of pairs of the detection terminals, there is a case where the detection terminals are not wired. The spare terminals XY are shorted accordingly by the sequence number. For the installed cable, the cable which is detected completely can be used as an extension line and connected to the detection terminal, and the other end of the cable is connected with the far end of the detected cable through the terminal.
For the cable with the plug, the plug for inserting the cable can be manufactured in advance, one end of the scattered wire is connected to the detection terminal, and the plug is inserted with the cable plug.
After the detection terminal pair (the X end and the Y end) is connected and electrified, the light emitting diodes LED1 to LEDn are periodically and circularly lighted due to the switching function of the triode and the charge and discharge characteristics of the capacitor.
When the cable connection is completed, and the cable connection is complete, no broken wire exists, and the short circuit problem exists, the detection device indicator lamp can complete the cyclic lighting process according to the principle.
When the wire core 2 is broken, the light emitting diode LED2 in the circuit is not lightened, and the wire core can be judged to be broken.
When the short circuit occurs between the 2 cores and the 3 cores of the wire cores, the LEDs are not strictly lighted in a circulating way, but two LEDs are lighted at the same time, and the short circuit of the wire cores connected by the two paths can be judged.
Although the present utility model has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the present utility model, and it is intended that all such modifications and substitutions be within the scope of the present utility model/be within the scope of the present utility model as defined by the appended claims. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. A control cable detection device, characterized by comprising a control loop (300), and a power supply terminal (400) connected with the control loop (300) and used for connecting an external power supply, and a detection terminal pair used for connecting a detection cable;
the control loop (300) comprises N control branches which are connected in sequence, and the Nth control branch is connected with the first control branch;
each detection terminal pair comprises a control detection terminal and a grounding detection terminal; one end of a wire core of the detection cable is connected to the control detection terminal, and the other end of the wire core is connected to the grounding detection terminal of the same detection terminal pair;
each control branch is provided with a light emitting diode for indicating the detection state of the cable core.
2. The control cable detection device of claim 1, wherein each control branch further comprises a triode, a capacitor, and two resistors;
the collector of the triode is connected with the cathode of the light-emitting diode, and the anode of the light-emitting diode is connected to the positive end of the power supply terminal through a resistor; the base electrode of the triode is connected to the positive end of the power supply terminal through another resistor; the emitter of the triode is connected to the control detection terminal of one detection terminal pair, and the base of the triode is also connected to the collector of the triode in the next control branch through a capacitor.
3. The control cable detection device of claim 2, wherein the base of the transistor in the nth control leg is capacitively coupled to the collector of the transistor in the first control leg.
4. A control cable detection arrangement according to claim 3, characterized in that the arrangement further comprises a switching power supply (200) connected to the power supply terminals for converting an external power supply to a set dc voltage value, the switching power supply (200) being connected to each control branch.
5. The control cable detection device of claim 4, wherein the anode of the light emitting diode is connected to the positive terminal of the switching power supply through a resistor, and the ground detection terminal of each detection terminal pair is connected to the negative terminal of the switching power supply.
6. The control cable detection device of claim 4, further comprising a housing (100), wherein the switching power supply (200) and the control loop (300) are disposed inside the housing (100);
the power supply terminal (400) and the detection terminal pair are provided outside the housing (100).
7. The control cable detection device according to claim 6, wherein a hollowed-out indicator light window (101) for observing the status of the internal light emitting diode is provided on the housing (100).
8. The control cable detection device of claim 6, wherein the housing is a housing of an insulating material.
9. The control cable detection device of claim 1, wherein the control detection terminal and the ground detection terminal in the detection terminal pair are connected by a core of the detection cable, or the control detection terminal and the ground detection terminal in the detection terminal pair are shorted.
10. The control cable detection device of claim 4, wherein the switching power supply is connected to an external 220v ac power through a power terminal, and the switching power supply outputs 5v dc power to each control branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131302.3U CN219799718U (en) | 2023-05-08 | 2023-05-08 | Control cable detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321131302.3U CN219799718U (en) | 2023-05-08 | 2023-05-08 | Control cable detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219799718U true CN219799718U (en) | 2023-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321131302.3U Active CN219799718U (en) | 2023-05-08 | 2023-05-08 | Control cable detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219799718U (en) |
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2023
- 2023-05-08 CN CN202321131302.3U patent/CN219799718U/en active Active
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