CN203909271U - Voltage drop tool - Google Patents
Voltage drop tool Download PDFInfo
- Publication number
- CN203909271U CN203909271U CN201420355718.8U CN201420355718U CN203909271U CN 203909271 U CN203909271 U CN 203909271U CN 201420355718 U CN201420355718 U CN 201420355718U CN 203909271 U CN203909271 U CN 203909271U
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- relay
- triode
- circuit
- main control
- control module
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Abstract
The utility model provides a voltage drop tool. The tool comprises: a first relay which is connected with a tested electric energy meter to control the energization and power interruption of the tested electric energy meter; a first relay drive circuit which is used to drive and control the on/off state of the first relay; a display circuit which comprises a plurality of Nixie tubes for displaying the control time of the first relay; and a MCU master control module which comprises a master control chip and a key control circuit, wherein the key control circuit is used to select and control the first relay drive circuit so as to control the on/off state of the first relay. According to the voltage drop tool, the first relay drive circuit is used to drive the first relay to continuously and automatically switching the energization time, the power interruption time and the automatic switching interval time, the display circuit is used to display the control time, and a key control circuit is arranged to input the setting information of relay control, so the advantage of easy operation can be realized, and the voltage drop tool can be fabricated only with simple components, so the advantage of low production cost can be realized.
Description
Technical field
The voltage that the utility model relates to electron device detection field, particularly a kind of electric energy meter falls frock.
Background technology
In electricity usage process, often can cause the interrupt run suddenly such as equipment, electrical equipment because of the power-off suddenly of the situations such as disaster or artificial destruction, or even the appearance of the situation such as have a power failure suddenly fire, equipment failure, the city of causing are as dark as a stack of black cats, plant downtime.In instrument industry, electric energy meter is for metering electric charge, if have a power failure suddenly, can cause ammeter measuring error, data perturbation, damage etc., therefore, need to do voltage drop test to electric energy meter, namely voltage die, the experiment that jumps, in experiment, bust is unfixed with the time jumping, and the number of times of lifting is also unfixed, so need voltage to fall frock, electric energy meter is tested.Voltage drop test in the market utilizes cycle drop generator to realize, and this equipment cost is high, and exists operability complicated, loaded down with trivial details, and data processing trouble can not be with problems such as carrying test.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide and a kind ofly controls cheaply the voltage that voltage falls and fall frock.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of voltage falls frock: comprise MCU main control module and,
The first relay, connects tested electric energy meter, controls energising and the power-off of tested electric energy meter;
The first relay drive circuit, is connected with MCU main control module, is subject to MCU master control module controls for driving the break-make of the first relay;
Display circuit, comprises a plurality of charactrons, for showing state of a control and the configuration information of the first relay;
Key control circuit, is connected with MCU main control module, the configuration information of controlling for input relay;
Power circuit, for the first relay, the first relay drive circuit, display circuit, MCU main control module, key circuit provide working power.
Described the first relay drive circuit comprises triode T2, T3, T4, T5, T7, T8, the collector of access triode T3 after amplifying by the two-stage of triode T2 and T7 from the control signal of MCU main control module, and as connecting the end that arranges of controlling the first relay; The collector of access triode T4 after amplifying by the two-stage of triode T5 and T8 from the control signal of MCU main control module, and as exporting the reset terminal of controlling the first relay, the emitter of described triode T2 and T5 is connected in 5V direct supply, the emitter of described triode T3 and T4 is connected in 12V direct supply jointly, and base stage is connected in reset terminal and end is set by resistance R 90 and R91 respectively.
Describedly end and reset terminal be set respectively and between ground, be connected with protection electric capacity.
Described key control circuit comprises and is connected to K switch 1, K2, K3, K4, K5, the K6 on main control chip I/O mouth in MCU main control module, and each button parallel-connection light-emitting diodes D1, D2, D3, D4, D5, D6 respectively, is used to indicate button operation.
Described power circuit comprises transformer T5, rectifier bridge D24 and D26 and positive voltage voltage stabilizer U3, after the insurance filtering of civil power by a thermistor Q1 and a capacitor C 100, through transformer T5, be divided into two-way, wherein 5V direct current is exported in a road after rectifier bridge D24 and positive voltage voltage stabilizer U3, and 12V direct current is exported on another road after rectifier bridge D26.
Also be included as the second reserved relay circuit of Function Extension, comprise a triode T1, the collector of described triode T1 is connected in an input end of the second relay, another input end of described the second relay connects 12V direct supply, thus from the control signal of MCU main control module by after amplifying by triode after an electric resistance partial pressure with reference voltage formation pressure reduction driving second relay of 12V direct supply.
Compared with prior art, the utlity model has following advantage:
The utility model provides a kind of voltage to fall frock, being provided with the first relay drive circuit drives the first relay routinely to automatically switch conduction time, power-off time and automatic switchover interval time etc., and show the control time by display circuit, and be provided with the configuration information that key control circuit input relay is controlled, operate simple and easy, the voltage that utilizes simple components and parts just can make falls frock, greatly reduces production cost.
Accompanying drawing explanation
Fig. 1 is the structured flowchart that the utility model voltage falls frock;
Fig. 2 is the utility model embodiment MCU main control module and key control circuit figure;
Fig. 3 is the utility model embodiment the first relay drive circuit figure;
Fig. 4 is the utility model embodiment power circuit diagram;
Fig. 5 is the utility model embodiment display circuit figure;
Fig. 6 is that the utility model embodiment exports indicating circuit figure;
Fig. 7 is the utility model embodiment key control circuit figure;
Fig. 8 is the utility model embodiment the second relay circuit figure.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is explained in further detail.
As shown in Figure 1, a kind of voltage falls frock, comprise MCU main control module, key control circuit, the first relay drive circuit, the first relay, display circuit, power circuit, the second relay circuit, by key control circuit, Control information is set, then MCU main control module transmits control signal and triggers the first relay drive circuit, the first relay drive circuit drives the break-make of the first relay, and by display circuit, show conduction time of relay, power-off time and the interval time of automatically switching, the second relay can carry out voltage fall-down test to electrical component under the control of MCU main control module, MCU main control module also comprises main control chip and key control circuit, by key control circuit, can select control model and control time, corresponding signal is passed to main control chip.
As Fig. 2, shown in 7, the main control chip of MCU main control module adopts 51 single-chip microcomputers, key control circuit comprises light emitting diode D1, D2, D3, D4, D5, D6 and K switch 1, K2, K3, K4, K5, K6, the equal one end of each light emitting diode is connected in the I/O mouth of main control chip, other end ground connection, each corresponding each light emitting diode of switch short circuit, when pressing any switch, corresponding light emitting diode will go out, the present embodiment is provided with by K4 and selects to regulate conduction time, power-off time or stepping time (automatically switching interval time), K switch 5, K6 regulates the increase and decrease of time, after setting the time, press K5 and K6 simultaneously, constipation bundle regulates, enter running status, in operational process, be, if press K5 or K6, frock pattern out of service, and can reselect and regulate the control time by K4.And K switch 1 is controlled conduction time, K switch 2 is controlled power-off times, and the 3 control step times of K switch, concrete control mode is as follows: 1) K1 not according to, D1 lamp is bright, ON time changes according to the stepping time setting before; K1 presses, and LED1 lamp goes out, and ON time changes not according to the stepping time setting before, but just according to the ON time conducting arranging.2) K2 not according to, D2 lamp is bright, the turn-off time changes according to the stepping time that sets before; K2 presses, and LED2 lamp goes out, and the turn-off time changes not according to the stepping time setting before, but just according to the turn-off time arranging, turn-offs.3) K3 not according to, D4 lamp is bright, the turn-on and turn-off time changes according to the stepping time that sets before, and is time step increments; K3 presses, and D4 lamp goes out, and the turn-on and turn-off time changes according to the stepping time setting before, and is that time stepping is successively decreased.
As shown in Figure 3, the first relay drive circuit comprises triode T2, T3, T4, T5, T7, T8, resistance R 89, R90, R91, R92, R107, R108 and capacitor C 15, C16, the base stage of triode T2 is connected in the main control chip of MCU main control module RELAY A by resistance R 89 holds, its collector is connected in the base stage of triode T7 by resistance R 107, its emitter connects 5V direct supply, described triode T7 grounded emitter, the collector of collector connecting triode T3, and hold SET as being connected in arranging of the first relay, the base stage of triode T5 is connected in the main control chip of MCU main control module RELAY B by resistance R 92 holds, its collector is connected in the base stage of triode T8 by resistance R 108, its emitter connects 5V direct supply, described triode T8 grounded emitter, the collector of collector connecting triode T4, and as the reset terminal RESET that is connected in the first relay, the emitter of described relay T3 is connected in 12V direct supply, base stage is connected in reset terminal RESET by resistance R 90, the emitter of described triode T4 is connected in 12V direct supply, base stage is connected in end SET is set by resistance R 91, described capacitor C 15, C16 is connected to and arranges between end SET and ground and reset terminal RESET and ground.
When MCU main control module sends control signal to RELAY A end, after amplifying, the two-stage of triode T2, T7 changed the current potential that end SET is set, and end SET and reset terminal RESET are set and have formed voltage difference, thereby control the first relay closes energising; When MCU main control module sends control signal to RELAY B when end, after amplifying, the two-stage of triode T5, T8 changed the current potential of reset terminal RESET, and end SET and reset terminal RESET are set, and to have formed reverse voltage poor, thereby control the first relay, disconnects power-off; The effect that capacitor C 15 wherein, C16 play holding circuit.
As shown in Figure 4, power circuit comprises transformer T5, rectifier bridge D24 and D26 and positive voltage voltage stabilizer U3, described positive voltage voltage stabilizer model is 8L05A, after the insurance filtering of civil power by a thermistor Q1 and a capacitor C 100, through transformer T5, be divided into two-way small voltage, wherein 5V direct current is exported in a road after rectifier bridge D24 and positive voltage voltage stabilizer U3, and another road small voltage is exported 12V direct current after rectifier bridge D26.
As shown in Figure 5, in display circuit embodiment, can show the charactron LED1 of ON time, the charactron LED3 of the charactron LED2 of trip time, stepping time and the charactron LED4 of clock, described each charactron is connected to the emitter of three triodes, the base stage of each triode is connected in main control chip by a resistance, the collector of described each road triode all connects 5V direct supply, from the control signal of MCU main control module by resistance after again after the amplification of triode input control charactron show.
As shown in Figure 8, also comprise the second relay circuit, comprise a triode T1, the collector of described triode T1 is connected in an input end of the second relay, another input end of described the second relay connects 12V direct supply, thus from the control signal of MCU main control module by after amplifying by triode after an electric resistance partial pressure with reference voltage formation pressure reduction driving second relay on-off of 12V direct supply.The second relay circuit falls the expanded function of frock as this voltage, can be used for detecting the proof voltage drop performance of gadget, also can expand to and detect a plurality of gadgets simultaneously.
As shown in Figure 6, this voltage falls frock and also at the interface of civil power and power circuit, is provided with output indicating circuit, described output indicating circuit comprises resistance R 98, R99, R100, R101, R102, R103, R104, R105, voltage stabilizing diode D29, diode D27 and light emitting diode D28, civil power is by the resistance R 98 of series connection, R100, R102, after R104 and diode D27 by light emitting diode D28 and make it luminous, and then by the resistance R 105 of series connection, R103, R101, after R99, feed back in mains terminal, voltage stabilizing diode D29 carry out voltage-stabilizing protection in parallel with light emitting diode D28.
In the utility model, the not concrete functional module of introducing all can adopt ripe functional module of the prior art, for example concrete structure of MCU main control module; Wherein main control chip is existing 51 single-chip microcomputers, and control program those skilled in the art of output can need establishment according to control.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (6)
1. voltage falls a frock, it is characterized in that: comprise MCU main control module and,
The first relay, connects tested electric energy meter, controls energising and the power-off of tested electric energy meter;
The first relay drive circuit, is connected with MCU main control module, is subject to MCU master control module controls for driving the break-make of the first relay;
Display circuit, comprises a plurality of charactrons, for showing state of a control and the configuration information of the first relay;
Key control circuit, is connected with MCU main control module, the configuration information of controlling for input relay;
Power circuit, for the first relay, the first relay drive circuit, display circuit, MCU main control module, key circuit provide working power.
2. voltage according to claim 1 falls frock, it is characterized in that: described the first relay drive circuit comprises triode T2, T3, T4, T5, T7, T8, the collector of access triode T3 after amplifying by the two-stage of triode T2 and T7 from the control signal of MCU main control module, and as connecting the end that arranges of controlling the first relay; The collector of access triode T4 after amplifying by the two-stage of triode T5 and T8 from the control signal of MCU main control module, and as exporting the reset terminal of controlling the first relay, the emitter of described triode T2 and T5 is connected in 5V direct supply, the emitter of described triode T3 and T4 is connected in 12V direct supply jointly, and base stage is connected in reset terminal and end is set by resistance R 90 and R91 respectively.
3. voltage according to claim 2 falls frock, it is characterized in that: describedly end and reset terminal be set respectively and between ground, be connected with protection electric capacity.
4. voltage according to claim 2 falls frock, it is characterized in that: described key control circuit comprises and is connected to K switch 1, K2, K3, K4, K5, the K6 on main control chip I/O mouth in MCU main control module, and each button is parallel-connection light-emitting diodes D1, D2, D3, D4, D5, D6 respectively, is used to indicate button operation.
5. voltage according to claim 3 falls frock, it is characterized in that: described power circuit comprises transformer T5, rectifier bridge D24 and D26 and positive voltage voltage stabilizer U3, after the insurance filtering of civil power by a thermistor Q1 and a capacitor C 100, through transformer T5, be divided into two-way, wherein 5V direct current is exported in a road after rectifier bridge D24 and positive voltage voltage stabilizer U3, and 12V direct current is exported on another road after rectifier bridge D26.
6. voltage according to claim 1 falls frock, it is characterized in that: be also included as the second reserved relay circuit of Function Extension, comprise a triode T1, the collector of described triode T1 is connected in an input end of the second relay, another input end of described the second relay connects 12V direct supply, thus from the control signal of MCU main control module by after amplifying by triode after an electric resistance partial pressure with reference voltage formation pressure reduction driving second relay of 12V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355718.8U CN203909271U (en) | 2014-06-30 | 2014-06-30 | Voltage drop tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355718.8U CN203909271U (en) | 2014-06-30 | 2014-06-30 | Voltage drop tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203909271U true CN203909271U (en) | 2014-10-29 |
Family
ID=51783533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420355718.8U Expired - Fee Related CN203909271U (en) | 2014-06-30 | 2014-06-30 | Voltage drop tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN203909271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654822A (en) * | 2016-03-07 | 2016-06-08 | 纪选民 | Experimental demonstration instrument and demonstration method for exploring influence of inductors and capacitors on currents |
| CN106970538A (en) * | 2017-05-05 | 2017-07-21 | 北京电子工程总体研究所 | A kind of controlled in wireless detonation simulator resets system |
-
2014
- 2014-06-30 CN CN201420355718.8U patent/CN203909271U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654822A (en) * | 2016-03-07 | 2016-06-08 | 纪选民 | Experimental demonstration instrument and demonstration method for exploring influence of inductors and capacitors on currents |
| CN105654822B (en) * | 2016-03-07 | 2019-01-01 | 纪选民 | A kind of inquiry experiment demonstrator and demenstration method that inductor and capacitor influence electric current |
| CN106970538A (en) * | 2017-05-05 | 2017-07-21 | 北京电子工程总体研究所 | A kind of controlled in wireless detonation simulator resets system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190630 |