CN104698394A - Automatic alternation switch device sampling circuit - Google Patents
Automatic alternation switch device sampling circuit Download PDFInfo
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- CN104698394A CN104698394A CN201410784522.5A CN201410784522A CN104698394A CN 104698394 A CN104698394 A CN 104698394A CN 201410784522 A CN201410784522 A CN 201410784522A CN 104698394 A CN104698394 A CN 104698394A
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- 238000005070 sampling Methods 0.000 title abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 44
- 238000012546 transfer Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 6
- 230000009466 transformation Effects 0.000 description 5
- 206010037660 Pyrexia Diseases 0.000 description 1
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Abstract
Disclosed is an automatic alternation switch device sampling circuit. The automatic alternation switch device sampling circuit comprises twenty four resistors R1-R24 and six capacitors C1-C6. Input power sources V1, V2 and V3 are respectively power sources of A, B and C phases of a main power source, and input power sources V4, V5 and V6 are respectively power sources of A, B and C phases of a standby power source. The automatic alternation switch device sampling circuit has the advantages of using an integrated chip as a core device, and improving reliability of a whole system. Peripheral devices of the automatic alternation switch device sampling circuit are mainly composed of the resistors and the capacitors, are low in complexity level, and improve processing ability of products. The automatic alternation switch device sampling circuit can completely process six paths of alternating signals within 37ms, and figures out virtual values of the alternating signals, and efficiency of the automatic alternation switch device sampling circuit is higher than that of a common single chip computer system. The automatic alternation switch device sampling circuit uses a pure hardware sampling system, does not need software programming, and reduces use difficultly. The automatic alternation switch device sampling circuit can be expanded into a generation and grid connection system for achieving measurement of frequency and phase difference, can perform harmonic analysis, can normally work under a complex electromagnetic environment, and can directly tolerate megger insulation measurement in an insulation and voltage resistance testing experiment.
Description
Technical field
The invention belongs to automatic transfer switching electric appliance technical field, particularly relate to a kind of automatic transfer switching electric appliance sample circuit.
Background technology
In low-voltage distribution system, need to detect in real time power supply.Due to the singularity of automatic transfer switching electric appliance, require sampling system to gather and process six tunnel AC signal.
At present, the power detecting module of most automatic transfer switching electric appliances all carries out surveying and calculating with single-chip microcomputer, if but this device of single-chip microcomputer will carry out sampled-data processing, the hardware resource of meeting at substantial, if process 6 tunnel AC signal simultaneously, then need very high configuration.So the power detecting module of most automatic transfer switching electric appliance is not process six circuit-switched data in real time, but batch treatment AC signal stage by stage.Thus, will the real-time performance of influential system.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of automatic transfer switching electric appliance sample circuit.
In order to achieve the above object, automatic transfer switching electric appliance sample circuit provided by the invention comprises: 24 resistor R1-R24 and 6 capacitor C1-C6; Input power V1, V2, V3 are the power supply of A, B, C phase of primary power, and power supply V4, V5, V6 are the power supply of A, B, C phase of stand-by power source; Wherein:
Primary power A phase power supply V1 is connected with ground wire 0 with the 4th resistor R4 by the first resistor R1, the second resistor R2, the 3rd resistor R3, the first capacitor C1 successively; Primary power B phase power supply V2 is connected with ground wire 0 with the 8th resistor R8 by the 5th resistor R5, the 6th resistor R6, the 7th resistor R7, the second capacitor C2 successively; Primary power C phase power supply V3 is connected with ground wire 0 with the 12 resistor R12 by the 9th resistor R9, the tenth resistor R10, the 11 resistor R11, the 3rd capacitor C3 successively;
Stand-by power source A phase power supply V4 is connected with ground wire 0 with the 16 resistor R16 by the 13 resistor R13, the 14 resistor R14, the 15 resistor R15, the 4th capacitor C4 successively; Stand-by power source B phase power supply V5 is connected with ground wire 0 with the 20 resistor R20 by the 17 resistor R17, the 18 resistor R18, the 19 resistor R19, the 5th capacitor C5 successively; Stand-by power source C phase power supply V6 is connected with ground wire 0 with the 24 resistor R24 by the 21 resistor R21, the 22 resistor R22, the 23 resistor R23, the 6th capacitor C6 successively.
The first described resistor R1, the second resistor R2, the 5th resistor R5, the 6th resistor R6, the 9th resistor R9, the tenth resistor R10, the 13 resistor R13, the 14 resistor R14, the 17 resistor R17, the 18 resistor R18, the 21 resistor R21 and the 22 resistor R22 are 1M ohmic resistor.
The 3rd described resistor R3, the 7th resistor R7, the 11 resistor R11, the 15 resistor R15, the 19 resistor R19 and the 23 resistor R23 are 75K ohmic resistor.
The first described capacitor C1, the second capacitor C2, the 3rd capacitor C3, the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6 are 47 nanofarad capacitors.
The 4th described resistor R4, the 8th resistor R8, the 12 resistor R12, the 16 resistor R16, the 20 resistor R20 and the 24 resistor R24 are 1.2K ohmic resistor.
The invention provides a kind of automatic transfer switching electric appliance sample circuit, this sample circuit can oneself Real-time Collection process six road ac sampling signals, need not take a large amount of mcu resources, can ensure the fast-response of system.
Automatic transfer switching electric appliance sample circuit provided by the invention has following technique effect:
1, the core devices that the present invention is used have employed integrated chip, improves the reliability of whole system.
2, peripheral components of the present invention is formed primarily of resistance and electric capacity, and complexity is lower, improves the processibility of product.
3, sample circuit of the present invention can process six tunnel AC signal within 37ms, and calculates their effective value, and efficiency is higher than common Single Chip Microcomputer (SCM) system.
4, this sampling system is pure hardware sampling system, does not need software programming, reduces use difficulty.
5, this sampling system can also realize the measurement of frequency and phase differential, can be extended to generating and grid-connected system.
6, this sampling system can carry out frequency analysis, normally can work under complex electromagnetic environment.
7, this sampling system when dielectric voltage withstand test experiments, directly can tolerate megger insulation measurement.
Accompanying drawing explanation
Fig. 1 is the AC sampling transformation system simulation part parallel circuit figure of automatic transfer switching electric appliance sample circuit provided by the invention;
Fig. 2 is the AC sampling transformation system numerical portion circuit diagram of this circuit;
Fig. 3 is the AC sampling transformation system simulation part input waveform of this circuit;
Fig. 4 is the AC sampling transformation system simulation part output waveform of this circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, automatic transfer switching electric appliance sample circuit provided by the invention is described in detail.
As shown in Figure 1, automatic transfer switching electric appliance sample circuit provided by the invention comprises: 24 resistor R1-R24 and 6 capacitor C1-C6; Input power V1, V2, V3 are the power supply of A, B, C phase of primary power, and power supply V4, V5, V6 are the power supply of A, B, C phase of stand-by power source; Wherein:
Primary power A phase power supply V1 is connected with ground wire 0 with the 4th resistor R4 by the first resistor R1, the second resistor R2, the 3rd resistor R3, the first capacitor C1 successively; Primary power B phase power supply V2 is connected with ground wire 0 with the 8th resistor R8 by the 5th resistor R5, the 6th resistor R6, the 7th resistor R7, the second capacitor C2 successively; Primary power C phase power supply V3 is connected with ground wire 0 with the 12 resistor R12 by the 9th resistor R9, the tenth resistor R10, the 11 resistor R11, the 3rd capacitor C3 successively;
Stand-by power source A phase power supply V4 is connected with ground wire 0 with the 16 resistor R16 by the 13 resistor R13, the 14 resistor R14, the 15 resistor R15, the 4th capacitor C4 successively; Stand-by power source B phase power supply V5 is connected with ground wire 0 with the 20 resistor R20 by the 17 resistor R17, the 18 resistor R18, the 19 resistor R19, the 5th capacitor C5 successively; Stand-by power source C phase power supply V6 is connected with ground wire 0 with the 24 resistor R24 by the 21 resistor R21, the 22 resistor R22, the 23 resistor R23, the 6th capacitor C6 successively.
The first described resistor R1, the second resistor R2, the 5th resistor R5, the 6th resistor R6, the 9th resistor R9, the tenth resistor R10, the 13 resistor R13, the 14 resistor R14, the 17 resistor R17, the 18 resistor R18, the 21 resistor R21 and the 22 resistor R22 are 1M ohmic resistor.
The 3rd described resistor R3, the 7th resistor R7, the 11 resistor R11, the 15 resistor R15, the 19 resistor R19 and the 23 resistor R23 are 75K ohmic resistor.
The first described capacitor C1, the second capacitor C2, the 3rd capacitor C3, the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6 are 47 nanofarad capacitors.
The 4th described resistor R4, the 8th resistor R8, the 12 resistor R12, the 16 resistor R16, the 20 resistor R20 and the 24 resistor R24 are 1.2K ohmic resistor.
The 4th described resistor R4, the 8th resistor R8, the 12 resistor R12 are respectively the sampled voltage output resistance of primary power A, B, C phase power supply V1, V2, V3; 16 resistor R16, the 20 resistor R20 and the 24 resistor R24 are respectively the sampled voltage output resistance of stand-by power source A, B, C phase power supply V4, V5, V6.
The moment withstand voltage of described 1M Ohmage needs to reach 2000V; It is by utilizing the characteristic of the high value on whole piece loop, can by current limit in a very little scope, thus limit the generation of ohmically fever phenomenon, simultaneously 1M Ohmage is owing to having the moment voltage endurance of 2000V, so can the excess current of restriction system under lightening pulse environment well; Meanwhile, in system, the transient voltage value of 47 nanofarad electric capacity needs to reach 500V, by utilizing electric capacity to lead to the characteristic handing over resistance straight, system can be made when the dielectric voltage withstand test experiments of the acceptance of work, need not picked-off from whole distribution system.
As shown in Figure 4, in figure, waveform is the waveform after system simulation Partial Transformation completes, and it is the sine wave of a standard, and the longitudinal axis is peak value size, and its peak-to-peak value is 310mV.
As shown in Figure 2, wherein UH1 is the voltage computing chip of sampling system, the model of this chip is ATT7022E, this chip is an electric energy computation chip, the present invention is converted by rational front end, is the double loop power supply sampling system of automatic converting switch system by this chip by original electric energy computation chip functional mapping.Wherein N_2P, N_4P, N_6P are voltage sampling port, and the Waveform Input after primary power converts by system simulation part is to this input pin.Wherein R_2P, R_4P, R_6P are current sample mouth, and the Waveform Input after the voltage parameter of stand-by power source converts by system simulation part is to this input pin.The output of this numerical portion outwards transmits data by the high-speed channel of SPI, when host computer is inquired by bus system, the image data of current system sent and go back.
Automatic transfer switching electric appliance sample circuit provided by the invention provides a kind of automatic transfer switching electric appliance sample circuit, can gather six tunnel AC sine signals simultaneously and calculate their voltage effective value, also possessing the function of survey frequency, phase differential simultaneously.
The scheme of the software plus hardware that this circuit is different from the past, this pure hardware solution, can calculate the electrical quantity of six tunnel AC sine signals in real time.
Claims (5)
1. an automatic transfer switching electric appliance sample circuit, is characterized in that: described automatic transfer switching electric appliance sample circuit comprises: 24 resistor R1-R24 and 6 capacitor C1-C6; Input power V1, V2, V3 are the power supply of A, B, C phase of primary power, and power supply V4, V5, V6 are the power supply of A, B, C phase of stand-by power source; Wherein:
Primary power A phase power supply V1 is connected with ground wire 0 with the 4th resistor R4 by the first resistor R1, the second resistor R2, the 3rd resistor R3, the first capacitor C1 successively; Primary power B phase power supply V2 is connected with ground wire 0 with the 8th resistor R8 by the 5th resistor R5, the 6th resistor R6, the 7th resistor R7, the second capacitor C2 successively; Primary power C phase power supply V3 is connected with ground wire 0 with the 12 resistor R12 by the 9th resistor R9, the tenth resistor R10, the 11 resistor R11, the 3rd capacitor C3 successively;
Stand-by power source A phase power supply V4 is connected with ground wire 0 with the 16 resistor R16 by the 13 resistor R13, the 14 resistor R14, the 15 resistor R15, the 4th capacitor C4 successively; Stand-by power source B phase power supply V5 is connected with ground wire 0 with the 20 resistor R20 by the 17 resistor R17, the 18 resistor R18, the 19 resistor R19, the 5th capacitor C5 successively; Stand-by power source C phase power supply V6 is connected with ground wire 0 with the 24 resistor R24 by the 21 resistor R21, the 22 resistor R22, the 23 resistor R23, the 6th capacitor C6 successively.
2. automatic transfer switching electric appliance sample circuit according to claim 1, is characterized in that: the first described resistor R1, the second resistor R2, the 5th resistor R5, the 6th resistor R6, the 9th resistor R9, the tenth resistor R10, the 13 resistor R13, the 14 resistor R14, the 17 resistor R17, the 18 resistor R18, the 21 resistor R21 and the 22 resistor R22 are 1M ohmic resistor.
3. automatic transfer switching electric appliance sample circuit according to claim 1, is characterized in that: the 3rd described resistor R3, the 7th resistor R7, the 11 resistor R11, the 15 resistor R15, the 19 resistor R19 and the 23 resistor R23 are 75K ohmic resistor.
4. automatic transfer switching electric appliance sample circuit according to claim 1, is characterized in that: the first described capacitor C1, the second capacitor C2, the 3rd capacitor C3, the 4th capacitor C4, the 5th capacitor C5 and the 6th capacitor C6 are 47 nanofarad capacitors.
5. automatic transfer switching electric appliance sample circuit according to claim 1, is characterized in that: the 4th described resistor R4, the 8th resistor R8, the 12 resistor R12, the 16 resistor R16, the 20 resistor R20 and the 24 resistor R24 are 1.2K ohmic resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410784522.5A CN104698394A (en) | 2014-12-17 | 2014-12-17 | Automatic alternation switch device sampling circuit |
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| CN201410784522.5A CN104698394A (en) | 2014-12-17 | 2014-12-17 | Automatic alternation switch device sampling circuit |
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| CN104698394A true CN104698394A (en) | 2015-06-10 |
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|---|---|---|---|---|
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| CN102608404A (en) * | 2012-03-13 | 2012-07-25 | 上海诺雅克电气有限公司 | Voltage sampling circuit and controller applicable to dual-power automatic transfer switch |
| CN102968110A (en) * | 2012-12-05 | 2013-03-13 | 施耐德万高（天津）电气设备有限公司 | Multi-power-supply automatic transfer switch (ATS) signal processing system based on multiple processors and control method for multi-power-supply ATS signal processing system |
| CN103048521A (en) * | 2012-12-31 | 2013-04-17 | 浙江雷顿电气科技有限公司 | Voltage detection device of automatic change-over switch |
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2014
- 2014-12-17 CN CN201410784522.5A patent/CN104698394A/en active Pending
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| US6486647B1 (en) * | 1997-11-25 | 2002-11-26 | Siemens Building Technologies Ag | Circuit for monitoring an alternative current power switch |
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