CN205264191U - Controller is experienced in cable conductor short circuit - Google Patents
Controller is experienced in cable conductor short circuit Download PDFInfo
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- CN205264191U CN205264191U CN201520964829.3U CN201520964829U CN205264191U CN 205264191 U CN205264191 U CN 205264191U CN 201520964829 U CN201520964829 U CN 201520964829U CN 205264191 U CN205264191 U CN 205264191U
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- control panel
- current
- short circuit
- control
- experienced
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Abstract
The utility model relates to an experience instrument technical field safely, specifically disclose a controller is experienced in cable conductor short circuit, include control panel and the host computer of being connected with control panel, its characterized in that: last two plugs that are equipped with power indicator, control switch, electric current adjustment button, the display screen that shows current parameter, connection experience cable conductor of control panel, be equipped with the control panel in the host computer, the control panel is connected with ampere meter, voltmeter, set plate, the control panel includes regulating circuit and PI simulation regulating circuit. 220V exchanges the rectification the input, then contravariant rectification again, through control field effect transistor turn -on time duty ratio control output current during the contravariant. The utility model has the advantages that, the short circuit of dummycable line, take place when overflowing smolder, catch fire, the combustion phenomena, improve people's safety utilization of electric power knowledge, and product appearance is small and exquisite, powerful.
Description
Technical field
The utility model relates to safety and experiences Instrument technology field, refers to especially a kind of cable short circuit experience controller.
Background technology
In actual life, produce, draw because various situations there will be privately disorderly, while disorderly connecing consumer phenomenon, cause all kinds of electrifications of using. Most fire are because wire short-circuiting, overcurrent cause big fire! Bring very large loss and even occur casualties! Cable short circuit or overcurrent are experienced controller can allow experiencer see intuitively the real case of smoldering, catching fire that cable overload, short circuit occur, experience the fearful part of cable short circuit, the fire that people are caused cable short circuit, overcurrent is paid attention to more!
Utility model content
The purpose of this utility model is to provide a kind of cable short circuit and experiences controller, and product appearance is small and exquisite, powerful, when the short circuit of analog electrical cable, overcurrent, occur smolder, catch fire, combustion phenomena, improve people's safety utilization of electric power knowledge.
To achieve these goals, the utility model has adopted following technical scheme: controller is experienced in cable short circuit, comprise control panel and the main frame being connected with control panel, it is characterized in that: described control panel is provided with power supply indicator, gauge tap, electric current adjusting button, the display screen that shows current parameters, two plugs of connector electrical verification cable; In described main frame, be provided with control panel, described control panel is connected with ammeter, voltmeter, plate is set, and described control panel comprises regulating circuit and PI analog regulation.
Wherein, described regulating circuit comprise control the power switch S1 of on/off, alternating current 220V be transformed into the rectifier bridge of direct current 310V pulsating volage, the filter capacitor being connected with rectifier bridge, the insulated gate bipolar transistor IGBT being connected with filter capacitor, the active transformer T1 that is connected with insulated gate bipolar transistor IGBT;
Described rectifier bridge comprises four unilateral diodes;
Described filter capacitor comprises C1, C2, C3;
Described insulated gate bipolar transistor IGBT comprises Q1, Q2, Q3 and Q4, by regulating circuit, its control is reverse into direct current 310V the alternating current of the adjustable 20kHz of pulsewidth;
Described active transformer T1 is transformed into low-voltage, high-current by 20kHz alternating current and exchanges output, then rectification is transformed into direct current output through diode group.
Wherein, described regulating circuit sample rate current and voltage, then calculate output valve by PI analog regulation, then output voltage control SG3525, SG3525 drives driving transformer T2 by amplification driving circuit, and driving transformer T2 changes control output 1,2,3 and 4.
The beneficial effects of the utility model are: adopt after above-mentioned controller, product appearance is small and exquisite, powerful, the real case of smoldering, catching fire occurring while making experiencer see intuitively cable short circuit, overcurrent, by the fearful part of personal visual experience cable short circuit, the fire that people are caused cable short circuit overcurrent is paid attention to more, further pay attention to the understanding to electrical property, strict safety utilization of electric power operational procedure, the education that tightens security, universal and raising people safety utilization of electric power knowledge.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment technical scheme, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only that the utility model is in order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing of required use in p-embodiment or description of the Prior Art is briefly described, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Controller is experienced in cable short circuit as shown in Figure 1, comprise control panel 2 and the main frame 1 being connected with control panel 2, it is characterized in that: described control panel 2 is provided with power supply indicator 6, gauge tap 3, electric current adjusting button 4, the display screen 5 that shows current parameters, two plugs 7 of connector electrical verification cable 8.
Circuit as shown in Figure 2, is provided with control panel in described main frame 1, and described control panel is connected with ammeter, voltmeter, plate is set, and described control panel comprises regulating circuit and PI analog regulation.
S1 is power switch, control on/off, rectifier bridge is transformed into direct current 310V pulsating volage alternating current 220V, electric capacity after filtering, direct current 310V is more stable, and Q1, Q2, Q3 and Q4 are IGBT, by regulating circuit, its control is reverse into direct current 310V the alternating current of the adjustable 20kHz of pulsewidth, 20kHz alternating current changes into about 20V low-voltage, high-current and exchanges output through active transformer T1, then rectification is transformed into direct current output through diode group.
Regulating circuit sample rate current and voltage, then calculate output valve by PI analog regulation, output voltage control SG3525 again, SG3525 drives driving transformer T2 by amplification driving circuit, and driving transformer T2 changes control output 1,2,3 and 4, constant voltage output when thereby change inversion pulsewidth realizes little load, excessive when output current, voltage maintains incessantly, and regulating circuit can change pulsewidth by the electric current of setting, thereby realize constant current output, fusing load (being wire).
Circuit theory: input 220V AC rectification, then inversion rectification again, passes through to control FET ON time Duty ratio control output current when inversion.
Control panel principle: core control is PI analog regulation, according to set-point and value of feedback control inverter conducting dutycycle, thereby controls power output.
Each work period is divided four periods, is respectively t1, t2, t3, t4, and its operation principle is as follows:
T1 period: Q1, Q4 conducting, Q2, Q3 turn-off, the sense of current of this period: anodal Q1T1Q4 ground;
T2 period: Q1, Q4, Q2, Q3 turn-off, this period no current;
T3 period: Q1, Q4 turn-off, Q2, Q3 conducting, this period sense of current: anodal Q2T1Q3 ground;
T4 period: Q1, Q4, Q2, Q3 turn-off, this period no current.
From above-mentioned analysis, at t1 and in the t3 period, the sense of current that flows through active transformer T1 is just in time contrary, namely direct current has been become to alternating current.
T1 and T2 are transformer, and T2 is driving transformer, and T1 is active transformer, and the input number of turn is many, and the output number of turn is few, and output voltage is low, electric current large (controlled). When output has wire short circuit, export instantaneous large-current by control and burn wire, thereby phenomenon is burnt in demonstration short circuit.
Because step-down transformer T1 in circuit is high frequency 20kHz, therefore transformer is can volume very little, thereby makes product appearance small and exquisite, powerful.
Rectifier bridge has been enclosed in rectifying tube in a shell exactly, and within each work period of rectifier bridge, the same time only has two diodes to carry out work, by the one-way conduction function of diode, alternating current is converted to unidirectional DC pulse moving voltage.
Filter capacitor is to be connected in parallel on rectification power circuit output, in order to reduce a kind of energy storage device that exchanges pulse ripple coefficient, smooth direct current output. Interchange is converted in the electronic circuit of direct current supply in use, filter capacitor not only makes the output of power supply direct current steadily, reduce the impact of alternation pulse ripple on electronic circuit, also can absorb the current fluctuation producing in the electronic circuit course of work and the interference sealing in via AC power simultaneously, make the service behaviour of electronic circuit more stable.
IGBT, insulated gate bipolar transistor, the compound full-control type voltage driven type power semiconductor being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube), has the advantage of the high input impedance of MOSFET and low conduction voltage drop two aspects of GTR concurrently. GTR saturation pressure reduces, and current carrying density is large, but drive current is larger; MOSFET driving power is very little, and switching speed is fast, but conduction voltage drop is large, and current carrying density is little. IGBT combines the advantage of above two kinds of devices, and the little and saturation pressure of driving power reduces. Be applicable to being very much applied to DC voltage and be 600V and above converter system as fields such as alternating current generator, frequency converter, Switching Power Supply, lighting circuit, Traction Drives.
Start to experience before this equipment, first fix control panel, main frame 1 wire harness is correctly connected inserting with control panel wire harness, connect before main frame 1 power supply, guarantee that main frame 1 power switch and control panel switch are in closed condition! Safety is experienced cable 8 and is correctly arranged in control panel transparent organic glass cover.
A correct flow process of experiencing: connect main frame 1 power line → open main frame 1 power switch → open control panel switch → open and regulate current regulating switch → watch cable over-current phenomenon avoidance → cable to burn → turn down and close current by-pass cock → closing control switching plate → Shutdown Hosts 1 power switch → disconnections main frame 1 power line → experience end!
When replacing or installing cables line, must ensure that control panel switch and main frame 1 power switch are in closed condition!
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. controller is experienced in cable short circuit, comprise control panel (2) and the main frame (1) being connected with control panel (2), it is characterized in that: described control panel (2) is provided with power supply indicator (6), gauge tap (3), electric current adjusting button (4), the display screen (5) that shows current parameters, two plugs (7) of connector electrical verification cable (8); Described main frame is provided with control panel in (1), and described control panel is connected with ammeter, voltmeter, plate is set, and described control panel comprises regulating circuit and PI analog regulation.
2. controller is experienced in cable short circuit according to claim 1, it is characterized in that: described regulating circuit comprise control the power switch S1 of on/off, alternating current 220V be transformed into the rectifier bridge of direct current 310V pulsating volage, the filter capacitor being connected with rectifier bridge, the insulated gate bipolar transistor IGBT being connected with filter capacitor, the active transformer T1 that is connected with insulated gate bipolar transistor IGBT;
Described rectifier bridge comprises four unilateral diodes;
Described filter capacitor comprises C1, C2, C3;
Described insulated gate bipolar transistor IGBT comprises Q1, Q2, Q3 and Q4, by regulating circuit, its control is reverse into direct current 310V the alternating current of the adjustable 20kHz of pulsewidth;
Described active transformer T1 is transformed into low-voltage, high-current by 20kHz alternating current and exchanges output, then rectification is transformed into direct current output through diode group.
3. controller is experienced in cable short circuit according to claim 1, it is characterized in that: described regulating circuit sample rate current and voltage, then by PI analog regulation, output voltage control SG3525 again, SG3525 drives driving transformer T2 by amplification driving circuit, and driving transformer T2 changes control output 1,2,3 and 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964829.3U CN205264191U (en) | 2015-11-27 | 2015-11-27 | Controller is experienced in cable conductor short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964829.3U CN205264191U (en) | 2015-11-27 | 2015-11-27 | Controller is experienced in cable conductor short circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205264191U true CN205264191U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520964829.3U Expired - Fee Related CN205264191U (en) | 2015-11-27 | 2015-11-27 | Controller is experienced in cable conductor short circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205264191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450963A (en) * | 2016-12-07 | 2017-02-22 | 上海应用技术大学 | Socket short circuit safe experience device |
| CN107862953A (en) * | 2017-12-14 | 2018-03-30 | 北京科技大学天津学院 | Current overload and short circuit endanger demonstrator |
-
2015
- 2015-11-27 CN CN201520964829.3U patent/CN205264191U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450963A (en) * | 2016-12-07 | 2017-02-22 | 上海应用技术大学 | Socket short circuit safe experience device |
| CN107862953A (en) * | 2017-12-14 | 2018-03-30 | 北京科技大学天津学院 | Current overload and short circuit endanger demonstrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20211127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |