CN205049686U - A fault finding device for cutting off power supply tripping operation circuit - Google Patents
A fault finding device for cutting off power supply tripping operation circuit Download PDFInfo
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- CN205049686U CN205049686U CN201520786320.4U CN201520786320U CN205049686U CN 205049686 U CN205049686 U CN 205049686U CN 201520786320 U CN201520786320 U CN 201520786320U CN 205049686 U CN205049686 U CN 205049686U
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Abstract
The utility model discloses a fault finding device for cutting off power supply tripping operation circuit, detection circuitry inside including the device body of constituteing by preceding shell, backshell, preceding end cap, back end cap, upper cover, lower cover and arranging the device body in, wherein, the notch department of upper cover is equipped with a LCD screen, and the LCD screen right side is equipped with pilot lamp and button, three -layer step form is constituteed with preceding end cap jointly to preceding shell, set up a plurality of wiring end on the preceding shell, the backshell is equipped with power source and communication interface, detection circuitry fixes and covers last, and it includes central processing unit unit, detecting element, LCD screen and communication unit. This device provides reliable foundation for power consumption equipment trouble circuit investigation, has practiced thrift the investigation circuit time, improves work efficiency.
Description
Technical field
The utility model belongs to electrical engineering technical field, more specifically, relates to a kind of malfunction elimination device for power-off trip circuit.
Background technology
Along with the development of national economy and the continuous increase of electricity needs, the safety problem of electrical production is also more and more outstanding.For ensuring safety, all can the power-off tripping operation of detonator circuit in the situations such as consumer fault, circuit aging, overload short circuit.For power transmission sequence, how fast finding trouble spot is the difficult problem perplexing safe power supply always.After transmission line of electricity breaks down, judge its position in time, thus carry out failture evacuation, significant to the safety and stability and economical operation ensureing whole electric system.
In prior art, on-the-spot by the manual investigation in road by staff after tripping operation is adopted more to the investigation of faulty circuit, or with ammeter, circuit is tested, waste time and energy.
Utility model content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of malfunction elimination device for power-off trip circuit, its object is to solve the defect that existing failture evacuation is wasted time and energy.
For achieving the above object, provide a kind of malfunction elimination device for power-off trip circuit, it is characterized in that, comprise the device body be made up of fore shell, back cover, front plug, rear plug, upper cover, lower cover and the testing circuit being placed in device body inside, wherein
The notch place of described upper cover is provided with a liquid crystal display, is provided with pilot lamp and button on the right side of liquid crystal display, described fore shell and front plug jointly form three layers step-like, described fore shell arranges multiple terminals; Described back cover is provided with power interface and communication interface;
Described testing circuit be fixed on described on cover, it comprises central processor unit, detecting unit and communication unit, and wherein, detecting unit input end is connected with terminals, to detect the change of external switching value; Its output terminal is connected with central processing unit input end, central processing unit output terminal is connected with liquid crystal display and communication unit input end respectively, central processing unit is that digital signal sends communication unit the condition conversion detected, communication unit is sent to master system by bus data.
Further, be also included on described fore shell and arrange a burning mouth, burning mouth is connected with testing circuit, for firmware of updating the equipment.
Further, described forward and backward plug and lower cover adopt buckle structure to be combined as a whole.
Multiple terminals of this pick-up unit are held with the common port of the on/off type switch of each check point and off respectively and are connected, and when feed circuit normally work, common port and On connect, and testing circuit output signal makes 2 alarm lamps not glimmer; When feed circuit break down tripping operation, common port and Off connect, testing circuit starts, by a road light-coupled isolation, export the level signal of a change, the different check point condition conversion detected are that digital signal is sent to liquid crystal display and communication unit through central processing unit process by this signal, and the alarm lamp be connected with liquid crystal display glimmers notifying circuit fault, the liquid crystal screen display open circuit fault position be connected with communication unit.
In general, this device provides reliable basis for consumer faulty line investigation, has saved investigation wire time, has increased work efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of one-piece construction schematic diagram of the pick-up unit for power-off tripping operation;
Fig. 2 is a kind of testing circuit schematic diagram of the pick-up unit for power-off tripping operation;
Fig. 3 is a kind of detecting unit schematic diagram of the pick-up unit for power-off tripping operation.
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
Plug, 9-upper cover, 10-lower cover after plug, 8-before 1-liquid crystal display, 2-pilot lamp, 3-button, 4-burning mouth, 5-terminals, 7-.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Figure 1, a kind of malfunction elimination device for power-off trip circuit, comprise the device body be made up of fore shell, back cover, front plug 7, rear plug 8, upper cover 9, lower cover 10 and the testing circuit 11 being placed in device body inside, wherein, the notch place of upper cover 9 is provided with a liquid crystal display 1, be provided with pilot lamp 2 and button 3 on the right side of liquid crystal display, fore shell and front plug jointly form three layers step-like, fore shell is arranged multiple terminals 5; Back cover is provided with power interface and communication interface (as 485 communication interfaces).Terminals are made up of two binding posts, and connect common port and the off end of power circuit on/off type switch respectively, this device can arrange multiple terminals, detects to connect different check points.Power interface is used for being connected with working power, provides the normal working voltage of this device.Liquid crystal display is connected with testing circuit, for showing way and the signal condition of check point; Pilot lamp is connected with testing circuit, for display power supply state and transmission state signal.Button is connected with testing circuit, for change detection signal way state and device address.Burning mouth is connected with testing circuit, for firmware of updating the equipment.As shown in Figure 2, be positioned at pick-up unit inside and be fixed on the testing circuit covered, this testing circuit comprises central processor unit, detecting unit and communication unit, wherein, detecting unit input end is connected with terminals, to detect external switching value change; Detecting unit output terminal is connected with central processing unit input end, send after the voltage variety pre-service detected into central processing unit, central processing unit output terminal is connected with liquid crystal display input end and communication unit input end respectively, central processing unit will detect that data send into liquid crystal display, liquid crystal display shows corresponding informance, central processing unit is that digital signal sends communication unit the condition conversion detected, communication unit is sent to master system by bus data.
As shown in Figure 3, give the example of the detecting unit in testing circuit, this detecting unit comprises: three resistance, an electric capacity and an optical coupling isolator, first resistance R1, the second resistance R2 are used for current limliting and dividing potential drop, and the 3rd resistance R3 is used for current limliting, and electric capacity C1 is used for filtering, optical coupling isolator is used for electric signal isolation, strengthens antijamming capability.When external equipment normally works, common port and On connect, and electric signal VCC leads to current-limiting resistance and drives optocoupler, and optocoupler conducting VDD holds output low level to send into processor by R3 at OUT, is detected as normal condition.During tripping operation, common port and Off connect, and optocoupler ends.VDD holds output high level by the 3rd resistance R3 at OUT, and after this signal sends into processor process, liquid crystal display and communication unit make corresponding action, and alarm lamp glimmers, notifying circuit fault.
This device can as the detection access point of any on-public-off type switch, access public-off port, open to be with on-public-off type sky, the common port opened by sky and off termination enter one group of check point of this device, when there is tripping operation, this device alarm lamp can be bright, and empty for the tripping operation relevant information opened sent by 485 buses, thus decision circuitry guilty culprit position.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the malfunction elimination device for power-off trip circuit, it is characterized in that, comprise by fore shell, back cover, front plug (7), rear plug (8), upper cover (9), device body that lower cover (10) forms and the testing circuit (11) that is placed in device body inside, wherein
The notch place of described upper cover (9) is provided with a liquid crystal display (1), pilot lamp (2) and button (3) is provided with on the right side of liquid crystal display, described fore shell and front plug jointly form three layers step-like, described fore shell is arranged multiple terminals (5); Described back cover is provided with power interface and communication interface;
Described testing circuit be fixed on described on cover, it comprises central processor unit, detecting unit, liquid crystal display and communication unit, and detecting unit input end is connected with terminals, to detect the change of external switching value; Its output terminal is connected with central processing unit input end, central processing unit output terminal is connected with liquid crystal display and communication unit input end respectively, central processing unit is that digital signal sends communication unit the condition conversion detected, communication unit is sent to master system by bus data.
2. a kind of malfunction elimination device for power-off trip circuit as claimed in claim 1, is characterized in that, be also included on described fore shell and arrange a burning mouth (4).
3. a kind of malfunction elimination device for power-off trip circuit as claimed in claim 1 or 2, it is characterized in that, described forward and backward plug and lower cover adopt buckle structure to be combined as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786320.4U CN205049686U (en) | 2015-10-12 | 2015-10-12 | A fault finding device for cutting off power supply tripping operation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520786320.4U CN205049686U (en) | 2015-10-12 | 2015-10-12 | A fault finding device for cutting off power supply tripping operation circuit |
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| Publication Number | Publication Date |
|---|---|
| CN205049686U true CN205049686U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520786320.4U Active CN205049686U (en) | 2015-10-12 | 2015-10-12 | A fault finding device for cutting off power supply tripping operation circuit |
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| CN (1) | CN205049686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634461A (en) * | 2017-10-25 | 2018-01-26 | 福州兴邦电力设备公司 | A kind of distribution box of tape jam instruction |
-
2015
- 2015-10-12 CN CN201520786320.4U patent/CN205049686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634461A (en) * | 2017-10-25 | 2018-01-26 | 福州兴邦电力设备公司 | A kind of distribution box of tape jam instruction |
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| GR01 | Patent grant |