CN203587632U - Switch device and cable identification device - Google Patents
Switch device and cable identification device Download PDFInfo
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- CN203587632U CN203587632U CN201320764261.1U CN201320764261U CN203587632U CN 203587632 U CN203587632 U CN 203587632U CN 201320764261 U CN201320764261 U CN 201320764261U CN 203587632 U CN203587632 U CN 203587632U
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- relay
- pin
- resistance
- cable
- control chip
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- 230000008033 biological extinction Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
The utility model discloses a switch device and a cable identification device. The switch device includes a relay and a pulse circuit; the pulse circuit generates an oscillation pulse to control powering on and powering off of a relay coil; the relay coil is powered on to drive a contact of the relay to be closed; and the relay coil is powered off to drive the contact of the relay to be open. The pulse circuit is used to generate the oscillation pulse to control the powering on and powering off of the relay coil, so as to drive the relay contact to be closed and open; the pulse current is outputted through the cable; and after the relay contact is open, the insulation part between the contacts is used to withstand the high voltage of the loop, so that the working stability of the cable identification device is improved.
Description
Technical field
The application relates to technical field of electricity, more particularly, relates to a kind of switchgear and cable identifier.
Background technology
The on-the-spot cable identifier using has the polytypes such as impulse method, audio frequency method, and impulse method, due to the vision easily advantage of judgement directly perceived, is widely used in engineering.In existing cable identifier, on-off circuit as shown in Figure 1, DC voltage is through DC/DI module (M1, M2, M3) convert electric current to and be connected to the collector of metal-oxide-semiconductor (Q3), to the base stage of metal-oxide-semiconductor, apply a pulse enable signal metal-oxide-semiconductor again and open and end, electric current is by the emitter output of metal-oxide-semiconductor.
In routine use, find, because cable grounding is incomplete, can make resistance in loop increase, in order to make, loop current is constant can increase Voltage-output to constant current source part, and when on-off circuit disjunction, the voltage at on-off circuit two ends exceeds the voltage that metal-oxide-semiconductor can bear like this, cause puncturing of beginning circuit, while therefore using cable identifier, can find, metal-oxide-semiconductor is easy to be burned, and makes the job stability of cable identifier poor.
Utility model content
In view of this, the application provides a kind of substitute of metal-oxide-semiconductor on-off circuit, increases and punctures withstand voltage, improves cable identifier job stability, to solve the problems of the technologies described above.
To achieve these goals, the existing scheme proposing is as follows:
A kind of switchgear, comprising: relay and pulsing circuit;
Described pulsing circuit generation oscillating impulse carrys out energising and the power-off of pilot relay coil, during described relay coil energising, drives relay contact closure, during described relay coil power-off, drives relay contact to open.
Preferably, described relay is: vacuum extinction speed-sensitive switch relay.
Preferably, described pulsing circuit comprises: control chip, the first resistance, the second resistance, electric capacity;
First of described control chip is connected with one end of the 5th pin and electric capacity and ground connection, second is connected with the other end of the 6th pin and electric capacity and one end of the second resistance connects, the other end of the 7th pin and the second resistance and one end of the first resistance are connected, the 8th is connected and connects power supply by switch with the other end of the first pin with the 4th pin, the 3rd pin output pulse.
Preferably, described control chip is: IC555.
A kind of cable identifier, comprising: signal generator and the receiver with sensor;
Described signal generator is periodically exported pulse current in cable;
The size of the pulse current flowing through in receiver exploration cable;
On-off circuit in described signal generator is comprised of relay and pulsing circuit, described pulsing circuit generation oscillating impulse carrys out energising and the power-off of pilot relay coil, during described relay coil energising, drive relay contact closure, during described relay coil power-off, drive relay contact to open.
Preferably, described relay is: vacuum extinction speed-sensitive switch relay.
Preferably, described pulsing circuit comprises: control chip, the first resistance, the second resistance, electric capacity;
First of described control chip is connected with one end of the 5th pin and electric capacity and ground connection, second is connected with the other end of the 6th pin and electric capacity and one end of the second resistance connects, the other end of the 7th pin and the second resistance and one end of the first resistance are connected, the 8th is connected and connects power supply by switch with the other end of the first pin with the 4th pin, the 3rd pin output pulse.
Preferably, described control chip is: IC555.
Preferably, described sensor is: current sensor, the electric current of responding in current sensor coil shows in display module.
Preferably, described display module is: pointer-type indication.
From above-mentioned technical scheme, can find out, the disclosed switchgear of the application and cable identifier, by pulsing circuit, obtain oscillating impulse and carry out the power-off of pilot relay coil electricity, and then drive relay contact closure to open, on cable, export pulse current, due to the withstand voltage height of relay, improved cable identifier job stability.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiment of the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is on-off circuit structural drawing in existing cable identifier;
Fig. 2 is the disclosed a kind of switchgear structural drawing of the embodiment of the present application;
Fig. 3 is the disclosed a kind of pulsing circuit structural drawing of the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.
For the on-off circuit solving in existing cable identifier is realized by metal-oxide-semiconductor (Q3), the problem of the poor work stability causing, the application provides a kind of novel switchgear to replace original metal-oxide-semiconductor on-off circuit, by pulsing circuit, obtain oscillating impulse and carry out the power-off of pilot relay coil electricity, and then drive relay contact closure to open, on cable, export pulse current, due to the withstand voltage height of relay, improved cable identifier job stability.
Embodiment mono-discloses a switchgear.
Shown in Figure 2, the disclosed switchgear of the present embodiment comprises: relay and pulsing circuit;
Pulsing circuit generation oscillating impulse carrys out energising and the power-off of pilot relay coil CJ1, during relay coil energising, drives relay contact J1 and J2 closure, during relay coil CJ1 power-off, drives relay contact J1 and J2 to open.
Shown in Figure 3, the disclosed pulsing circuit of the present embodiment comprises: control chip, the first resistance R 1, the second resistance R 2, capacitor C;
First of control chip is connected with one end of the 5th pin and capacitor C and ground connection, control chip second is connected with the other end of the 6th pin and capacitor C and one end of the second resistance R 2 connects, the other end of the 7th pin and the second resistance R 2 and one end of the first resistance R 1 are connected, the 8th is connected with the other end of the first pin with the 4th pin and passes through switch S B connection power supply, and the 3rd pin is exported pulse V0.
By switchgear, to the process of cable output pulse current, be: press switch S B and switch on power, power supply V charges to capacitor C by R1 and R2, when capacitance voltage U<1/3V, control chip output V0=1, the cut-off of capacitor discharge end.When after capacitance voltage U≤2/3V, control chip V0=0, now discharge end conducting, electric capacity discharges over the ground, U is declined, when U drops to while being less than 1/3V, output V0=1, now discharge end ends again, power supply V continues by R1 and R2, capacitor C to be charged, and then U is risen to after 2/3V, trigger overturns again, so go round and begin again, thereby at output terminal V0, obtain continually varying oscillating impulse waveform and come the energising power-off of pilot relay coil CJ1, the energising power-off band moving contact J1 of relay coil CJ1, the closure of J2 is opened, because electric current is by relay contact J1 stube cable, therefore on cable, export pulse current.The high voltage in loop is born in the insulation being disconnected between back contact by relay contact, has therefore solved on-off circuit and has realized by metal-oxide-semiconductor (Q3), and the problem of the poor work stability causing, has improved the job stability of identifier.Relay can be vacuum extinction speed-sensitive switch relay.Control chip can be IC555.
Embodiment bis-discloses a kind of cable identifier.
The disclosed a kind of cable identifier of the present embodiment, comprises signal generator and the receiver with sensor;
Signal generator is periodically exported pulse current in cable; The size and Orientation of the pulse current flowing through in receiver exploration cable; On-off circuit in signal generator is comprised of relay and pulsing circuit, pulsing circuit generation oscillating impulse carrys out energising and the power-off of pilot relay coil, during relay coil energising, drive relay contact closure, during relay coil power-off, drive relay contact to open.Receiver with sensor can be current sensor, the electric current of responding in current sensor coil shows in display module, display module can be that LED shows, also can directly use the gauge outfit of reometer to show, i.e. pointer-type indication.
Cable recognition principle: in order reliably to identify accurately cable, need to add a special signal to the cable being identified, this signal is received by special receiver, utilizes this characteristic just can identify the cable that will look for.Signal generator produces 10～30A pulse signal and enters cable, and pulse current generates an electromagnetic field and responded to by receiver around cable.
The principle of cable identifier identification cable: cable identifier is comprised of signal generator and receiver, and signal generator outputs to periodic current impulse in the cable that will identify, and this electricity need to, far-end ground connection, flow through cable to ensure enough large electric current.This system will be designed to return current and from same cable, not return.Only by a cable, return current will pass through several cables to the electric current spilling out, and this means that the current ratio spilling out flows through the return current of other cable large.
Receiver detection flows is crossed the size of cable pulse current.For reaching this purpose, connecting sensor the amplifier of connecting, the magnetic field that electric current flows through cable generation induces in the coil of sensor, and at display module, shows the intensity of amplifier adjustable signal.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the application.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the case of not departing from the application's spirit or scope, realize in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a switchgear, is characterized in that, comprising: relay and pulsing circuit;
Described pulsing circuit generation oscillating impulse carrys out energising and the power-off of pilot relay coil, during described relay coil energising, drives relay contact closure, during described relay coil power-off, drives relay contact to open.
2. device according to claim 1, is characterized in that, described relay is: vacuum extinction speed-sensitive switch relay.
3. device according to claim 1, is characterized in that, described pulsing circuit comprises: control chip, the first resistance, the second resistance, electric capacity;
First of described control chip is connected with one end of the 5th pin and electric capacity and ground connection, second is connected with the other end of the 6th pin and electric capacity and one end of the second resistance connects, the other end of the 7th pin and the second resistance and one end of the first resistance are connected, the 8th is connected and connects power supply by switch with the other end of the first pin with the 4th pin, the 3rd pin output pulse.
4. device according to claim 3, is characterized in that, described control chip is: IC555.
5. a cable identifier, is characterized in that, comprising: signal generator and the receiver with sensor;
Described signal generator is periodically exported pulse current in cable;
The size of the pulse current flowing through in receiver exploration cable;
On-off circuit in described signal generator is comprised of relay and pulsing circuit, described pulsing circuit generation oscillating impulse carrys out energising and the power-off of pilot relay coil, during described relay coil energising, drive relay contact closure, during described relay coil power-off, drive relay contact to open.
6. cable identifier according to claim 5, is characterized in that, described relay is: vacuum extinction speed-sensitive switch relay.
7. cable identifier according to claim 5, is characterized in that, described pulsing circuit comprises: control chip, the first resistance, the second resistance, electric capacity;
First of described control chip is connected with one end of the 5th pin and electric capacity and ground connection, second is connected with the other end of the 6th pin and electric capacity and one end of the second resistance connects, the other end of the 7th pin and the second resistance and one end of the first resistance are connected, the 8th is connected and connects power supply by switch with the other end of the first pin with the 4th pin, the 3rd pin output pulse.
8. cable identifier according to claim 7, is characterized in that, described control chip is: IC55.
9. cable identifier according to claim 5, is characterized in that, described sensor is: current sensor, the electric current of responding in current sensor coil shows in display module.
10. cable identifier according to claim 9, is characterized in that, described display module is: pointer-type indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764261.1U CN203587632U (en) | 2013-11-27 | 2013-11-27 | Switch device and cable identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764261.1U CN203587632U (en) | 2013-11-27 | 2013-11-27 | Switch device and cable identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587632U true CN203587632U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320764261.1U Expired - Lifetime CN203587632U (en) | 2013-11-27 | 2013-11-27 | Switch device and cable identification device |
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| Country | Link |
|---|---|
| CN (1) | CN203587632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459237A (en) * | 2014-12-16 | 2015-03-25 | 国家电网公司 | Signal generator for cable recognition device |
| CN110187226A (en) * | 2019-06-28 | 2019-08-30 | 无锡宏广电容器有限公司 | Polypropylene film capacitor short circuit dischange device |
-
2013
- 2013-11-27 CN CN201320764261.1U patent/CN203587632U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459237A (en) * | 2014-12-16 | 2015-03-25 | 国家电网公司 | Signal generator for cable recognition device |
| CN110187226A (en) * | 2019-06-28 | 2019-08-30 | 无锡宏广电容器有限公司 | Polypropylene film capacitor short circuit dischange device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140507 |
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| CX01 | Expiry of patent term |