CN201130209Y - Apparatus for detecting voltage change - Google Patents
Apparatus for detecting voltage change Download PDFInfo
- Publication number
- CN201130209Y CN201130209Y CNU200720198493XU CN200720198493U CN201130209Y CN 201130209 Y CN201130209 Y CN 201130209Y CN U200720198493X U CNU200720198493X U CN U200720198493XU CN 200720198493 U CN200720198493 U CN 200720198493U CN 201130209 Y CN201130209 Y CN 201130209Y
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- voltage
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- resistance
- digital signal
- change
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Abstract
The utility model relates to a voltage variation detection device, comprising an input port, a voltage transformation unit, a signal processing and output unit and an output port. The voltage variation detection device is characterized in that, the input port, the voltage transformation unit, the signal processing and output unit and the output port are connected with each other; a three-phase voltage in industrial power network is input to the voltage transformation unit through the input port; the voltage transformation unit proportionally transforms the voltage to low voltage signals which can be processed by the signal processing and output unit; after the signals are processed and calculated by the signal processing and output unit, the voltage regulation signals are output by the output port. Compared with the prior art, the voltage variation detection device has an advantage that voltage variation can be accurately and reliably detected.
Description
Technical field
The utility model relates to voltage detecting, particularly relates to a kind of change in voltage pick-up unit.
Background technology
Voltage parameter is an important evidence of implementing control automatically and protection consumer in the industrial electrical network.For example output voltage declines to a great extent and means overload power-supply unit (transformer, generator etc.), and even the generation of short circuit.In addition, if three-phase imbalance loads on the neutral line when opening circuit, the result that certain phase voltage raises and damages consumer will appear.Therefore, it is most important to detect the ANOMALOUS VARIATIONS of voltage in advance.Detecting change in voltage is that voltage change ratio (du/dt) detects.So far, the special high-accuracy voltage rate of change detection means of Shang Weiyou.
Summary of the invention
Technical matters to be solved of the present utility model be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of reliably, change in voltage pick-up unit accurately.
The purpose of this utility model can be achieved through the following technical solutions: a kind of change in voltage pick-up unit, it is characterized in that, comprise input port, voltage transformation module, signal Processing output unit, output port, described input port, voltage transformation module, signal Processing output unit and output port interconnect; Three-phase voltage is given voltage transformation module through input port in the industrial electrical network, voltage transformation module is transformed into voltage scale can be for the low voltage signal of signal Processing output unit processing, after by the signal Processing output unit signal being handled computing, the voltage change ratio signal is exported through output port.
Described input port comprises three-phase voltage input end AIN, BIN, CIN and zero line side N;
Described voltage transformation module comprises voltage protection device YA, YB, YC and voltage changer T, and described voltage changer T comprises the magnetic core of ring-type, is wound with three groups of coils on this magnetic core, and every group of coil is made of primary winding and secondary coil respectively;
Described signal Processing output unit comprises that 16 digital signal controller, electrify restoration circuit, master oscillator frequenc provide circuit, duty indicating circuit; Described electrify restoration circuit, master oscillator frequenc provide circuit all to be connected with digital signal controller with the duty indicating circuit;
Described output port comprises aanalogvoltage output port ADO, BDO, CDO, digital signal serial output terminal mouth SDI, the SDO of three-phase voltage rate of change, and PORT COM TX, RX.
Described three-phase voltage input end AIN is connected with the end of voltage protection device YA and the end of primary winding TA1, the other end of the other end of voltage protection device YA and primary winding TA1 all is connected with zero line side N, end with the TA2 of coil groups is connected its other end ground connection with the pin 2 of digital signal controller; Described three-phase voltage input end BIN is connected with the end of voltage protection device YB and the end of primary winding TB1, the other end of the other end of voltage protection device YB and primary winding TB1 all is connected with zero line side N, end with the TB2 of coil groups is connected its other end ground connection with pin 3 ends of digital signal controller; Three-phase voltage input end CIN is connected with the end of voltage protection device YC and the end of primary winding TC1, the other end of the other end of voltage protection device YC and primary winding TC1 all is connected with zero line side N, end with the TC2 of coil groups is connected its other end ground connection with pin 4 ends of digital signal controller;
The pin 5 of described digital signal controller and pin 24 equal ground connection, pin 17, pin 25 is connected with+5V voltage end, pin 16 is connected with-5V voltage end, pin 23 successively with resistance R 3, R4 series connection back is connected with aanalogvoltage output port ADO, resistance R 4 two ends are connected with capacitor C 4 respectively, C5, capacitor C 4, C5 all is connected with-5V voltage end, pin 21 successively with resistance R 5, R6 series connection back is connected with aanalogvoltage output port BDO, resistance R 6 two ends are connected with capacitor C 6 respectively, C7, capacitor C 6, C7 all is connected with-5V voltage end, pin 19 successively with resistance R 7, R8 series connection back is connected with aanalogvoltage output port CDO, resistance R 8 two ends are connected with capacitor C 8 respectively, C9, capacitor C 8, C9 all is connected with-5V voltage end, pin 14,15 respectively with port SDI, SDO connects, pin 8,9 respectively with PORT COM TX, RX connects.
Described electrify restoration circuit comprises capacitor C 1, resistance R 1, and an end of capacitor C 1 and resistance R 1 all is connected with the 5V voltage source, the other end ground connection of capacitor C 1, and the other end of resistance R 1 is connected with the pin of digital signal controller 26.
Described master oscillator frequenc provides circuit to comprise capacitor C 2, C2, crystal oscillator XT, the equal ground connection of an end of capacitor C 2, C2, and its other end connects respectively at the pin 6,7 of digital signal controller, is connected with crystal oscillator XT between this pin 6,7.
Described duty indicating circuit comprises resistance R 2, LED light, and an end of resistance R 2 is connected with the pin 11 of digital signal controller, and its other end is connected back ground connection with LED light.
Described voltage protection device is a voltage dependent resistor (VDR).
Described magnetic core is the magnetic core of ultracrystallite material, and adopts epoxy encapsulation.
Compared with prior art, the utlity model has advantage accurate, the reliable detection change in voltage.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of change in voltage pick-up unit comprises input port, voltage transformation module, signal Processing output unit, output port, and described input port, voltage transformation module, signal Processing output unit and output port interconnect; Three-phase voltage is given voltage transformation module through input port in the industrial electrical network, voltage transformation module is transformed into voltage scale can be for the low voltage signal of signal Processing output unit processing, after by the signal Processing output unit signal being handled computing, the voltage change ratio signal is exported through output port.
Described input port comprises three-phase voltage input end AIN, BIN, CIN and zero line side N; Described voltage transformation module comprises voltage protection device YA, YB, YC and voltage changer T, and described voltage changer T comprises the magnetic core of ring-type, is wound with three groups of coils on this magnetic core, and every group of coil is made of primary winding and secondary coil respectively; Described signal Processing output unit comprises that 16 digital signal controller, electrify restoration circuit, master oscillator frequenc provide circuit, duty indicating circuit; Described electrify restoration circuit, master oscillator frequenc provide circuit all to be connected with digital signal controller with the duty indicating circuit; Described output port comprises aanalogvoltage output port ADO, BDO, CDO, digital signal serial output terminal mouth SDI, the SDO of three-phase voltage rate of change, and PORT COM TX, RX; Described three-phase voltage input end AIN is connected with the end of voltage protection device YA and the end of primary winding TA1, the other end of the other end of voltage protection device YA and primary winding TA1 all is connected with zero line side N, end with the TA2 of coil groups is connected its other end ground connection with the pin 2 of digital signal controller; Described three-phase voltage input end BIN is connected with the end of voltage protection device YB and the end of primary winding TB1, the other end of the other end of voltage protection device YB and primary winding TB1 all is connected with zero line side N, end with the TB2 of coil groups is connected its other end ground connection with pin 3 ends of digital signal controller; Three-phase voltage input end CIN is connected with the end of voltage protection device YC and the end of primary winding TC1, the other end of the other end of voltage protection device YC and primary winding TC1 all is connected with zero line side N, end with the TC2 of coil groups is connected its other end ground connection with pin 4 ends of digital signal controller; The pin 5 of described digital signal controller and pin 24 equal ground connection, pin 17, pin 25 is connected with+5V voltage end, pin 16 is connected with-5V voltage end, pin 23 successively with resistance R 3, R4 series connection back is connected with aanalogvoltage output port ADO, resistance R 4 two ends are connected with capacitor C 4 respectively, C5, capacitor C 4, C5 all is connected with-5V voltage end, pin 21 successively with resistance R 5, R6 series connection back is connected with aanalogvoltage output port BDO, resistance R 6 two ends are connected with capacitor C 6 respectively, C7, capacitor C 6, C7 all is connected with-5V voltage end, pin 19 successively with resistance R 7, R8 series connection back is connected with aanalogvoltage output port CDO, resistance R 8 two ends are connected with capacitor C 8 respectively, C9, capacitor C 8, C9 all is connected with-5V voltage end, pin 14,15 respectively with port SDI, SDO connects, pin 8,9 respectively with PORT COM TX, RX connects; Described electrify restoration circuit comprises capacitor C 1, resistance R 1, and an end of capacitor C 1 and resistance R 1 all is connected with the 5V voltage source, the other end ground connection of capacitor C 1, and the other end of resistance R 1 is connected with the pin of digital signal controller 26; Described master oscillator frequenc provides circuit to comprise capacitor C 2, C2, crystal oscillator XT, the equal ground connection of an end of capacitor C 2, C2, and its other end connects respectively at the pin 6,7 of digital signal controller, is connected with crystal oscillator XT between this pin 6,7; Described duty indicating circuit comprises resistance R 2, LED light, and an end of resistance R 2 is connected with the pin 11 of digital signal controller, and its other end is connected back ground connection with LED light; Described voltage protection device is a voltage dependent resistor (VDR); Described magnetic core is the magnetic core of ultracrystallite material, and adopts epoxy encapsulation.
Wherein:
1. voltage transformation part is by YA, YB, and YC and T form.YA, YB, YC is a voltage protection device, protects this module not to be subjected to the damage of ultra-voltage.T is the transducer that specialized designs is made, and three-phase voltage scaling transformation in the industrial electrical network is become can be for the low voltage signal of chip processing.
The magnetic core of transducer T adopts the ultracrystallite material to make.Ultracrystallite material transducer has unique superiority:
A) low-down iron loss, very high saturation magnetic flux density, sufficiently high magnetic permeability.
B) working temperature height, in-40 ℃～+ 120 ℃ scopes, characteristic does not vary with temperature.
C) magnetic core has higher physical strength by epoxy encapsulation.
The coil parameter of transducer T is through optimal design.Primary winding has the good insulation performance performance, best current density, the less volume that takies; Primary winding and secondary coil have good coupling.
Guaranteed like this variation of ambient temperature and voltage significantly, when sharply changing output signal undistorted, do not have and lag behind.
2. signal operation, processing and output, by IC, C1～C9, R1～R8, XT and LED form.Wherein IC is 16 position digital signal controllers (DSC), and the simulating signal of input is carried out the A/D conversion, rate of change du/dt computing and conversion output.Its way of output has three kinds:
A) by SDI, SDO mouth other device is exported in the digital signal serial of rate of change du/dt.
B) carry out communication by TX, RX mouth and miscellaneous equipment.
C) through D/A conversion output analog voltage signal.
IC has 12 A/D transfer capabilities, and its resolution is 1/4096; Minimum 50ns operation time, 16 bit digital processing poweies, the high-order digit wave filter has guaranteed sufficiently high precision.IC has abundant EEPROM, even have a power failure, data still can be preserved.
Wherein the discrete values differential based on Taylor series is adopted in rate of change du/dt computing.
Capacitor C 1, resistance R 1 are electrify restoration circuit, and capacitor C 2, C3 and crystal oscillator XT supply with the IC master oscillator frequenc.
Resistance R 2 and LED indicating operating status.
High-accuracy voltage rate of change detection module is packaged into an integral device, and pin is a standard 2.54mm pin distance, so that use.
Claims (9)
1. a change in voltage pick-up unit is characterized in that, comprises input port, voltage transformation module, signal Processing output unit, output port, and described input port, voltage transformation module, signal Processing output unit and output port interconnect; Three-phase voltage is given voltage transformation module through input port in the industrial electrical network, voltage transformation module is transformed into voltage scale can be for the low voltage signal of signal Processing output unit processing, after by the signal Processing output unit signal being handled computing, the voltage change ratio signal is exported through output port.
2. a kind of change in voltage pick-up unit according to claim 1 is characterized in that, described input port comprises three-phase voltage input end (AIN), (BIN), (CIN) and zero line side (N);
Described voltage transformation module comprises voltage protection device (YA), (YB), (YC) and voltage changer (T), described voltage changer (T) comprises the magnetic core of ring-type, be wound with three groups of coils on this magnetic core, every group of coil is made of primary winding and secondary coil respectively;
Described signal Processing output unit comprises that 16 digital signal controller, electrify restoration circuit, master oscillator frequenc provide circuit, duty indicating circuit; Described electrify restoration circuit, master oscillator frequenc provide circuit all to be connected with digital signal controller with the duty indicating circuit;
Described output port comprises aanalogvoltage output port (ADO), (BDO), (CDO), the digital signal serial output terminal mouth (SDI) of three-phase voltage rate of change, (SDO), and PORT COM (TX), (RX).
3. a kind of change in voltage pick-up unit according to claim 2, it is characterized in that, described three-phase voltage input end (AIN) is connected with an end of voltage protection device (YA) and an end of primary winding (TA1), the other end of the other end of voltage protection device (YA) and primary winding (TA1) all is connected with zero line side (N), end with (TA2) of coil groups is connected its other end ground connection with the pin (2) of digital signal controller; Described three-phase voltage input end (BIN) is connected with an end of voltage protection device (YB) and an end of primary winding (TB1), the other end of the other end of voltage protection device (YB) and primary winding (TB1) all is connected with zero line side (N), end with (TB2) of coil groups is connected its other end ground connection with pin (3) end of digital signal controller; Three-phase voltage input end (CIN) is connected with an end of voltage protection device (YC) and an end of primary winding (TC1); the other end of the other end of voltage protection device (YC) and primary winding (TC1) all is connected with zero line side (N); end with (TC2) of coil groups is connected its other end ground connection with pin (4) end of digital signal controller.
4. a kind of change in voltage pick-up unit according to claim 3, it is characterized in that, pin of described digital signal controller (5) and pin (24) be ground connection all, pin (17), pin (25) is connected with+5V voltage end, pin (16) is connected with-5V voltage end, pin (23) successively with resistance (R3), (R4) the series connection back is connected with aanalogvoltage output port (ADO), resistance (R4) two ends are connected with electric capacity (C4) respectively, (C5), electric capacity (C4), (C5) all be connected with-5V voltage end, pin (21) successively with resistance (R5), (R6) the series connection back is connected with aanalogvoltage output port (BDO), resistance (R6) two ends are connected with electric capacity (C6) respectively, (C7), electric capacity (C6), (C7) all be connected with-5V voltage end, pin (19) successively with resistance (R7), (R8) the series connection back is connected with aanalogvoltage output port (CDO), resistance (R8) two ends are connected with electric capacity (C8) respectively, (C9), electric capacity (C8), (C9) all be connected with-5V voltage end, pin (14), (15) respectively with port (SDI), (SDO) connect pin (8), (9) respectively with PORT COM (TX), (RX) connect.
5. a kind of change in voltage pick-up unit according to claim 4, it is characterized in that, described electrify restoration circuit comprises electric capacity (C1), resistance (R1), one end of electric capacity (C1) and resistance (R1) all is connected with the 5V voltage source, the other end ground connection of electric capacity (C1), the other end of resistance (R1) is connected with the pin (26) of digital signal controller.
6. a kind of change in voltage pick-up unit according to claim 5, it is characterized in that, described master oscillator frequenc provides circuit to comprise electric capacity (C2), (C2), crystal oscillator (XT), the equal ground connection of an end of electric capacity (C2), (C2), its other end connects respectively at pin (6), (7) of digital signal controller, is connected with crystal oscillator (XT) between this pin (6), (7).
7. a kind of change in voltage pick-up unit according to claim 6, it is characterized in that, described duty indicating circuit comprises resistance (R2), LED light, and an end of resistance (R2) is connected with the pin (11) of digital signal controller, and its other end is connected back ground connection with LED light.
8. a kind of change in voltage pick-up unit according to claim 3 is characterized in that described voltage protection device is a voltage dependent resistor (VDR).
9. a kind of change in voltage pick-up unit according to claim 2 is characterized in that described magnetic core is the magnetic core of ultracrystallite material, and adopts epoxy encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720198493XU CN201130209Y (en) | 2007-11-28 | 2007-11-28 | Apparatus for detecting voltage change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720198493XU CN201130209Y (en) | 2007-11-28 | 2007-11-28 | Apparatus for detecting voltage change |
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| Publication Number | Publication Date |
|---|---|
| CN201130209Y true CN201130209Y (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200720198493XU Expired - Lifetime CN201130209Y (en) | 2007-11-28 | 2007-11-28 | Apparatus for detecting voltage change |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446602B (en) * | 2007-11-28 | 2011-05-11 | 上海精益电器厂有限公司 | Voltage change ratio detector |
| CN102103157B (en) * | 2009-12-21 | 2013-11-06 | 艾默生网络能源系统北美公司 | Direct voltage isolated sampling device |
-
2007
- 2007-11-28 CN CNU200720198493XU patent/CN201130209Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446602B (en) * | 2007-11-28 | 2011-05-11 | 上海精益电器厂有限公司 | Voltage change ratio detector |
| CN102103157B (en) * | 2009-12-21 | 2013-11-06 | 艾默生网络能源系统北美公司 | Direct voltage isolated sampling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Jingyi Electrical Appliance Co., Ltd. Assignor: Jingyi Electrical Appliances Factory Co., Ltd., Shanghai Contract record no.: 2010310000188 Denomination of utility model: Apparatus for detecting voltage change Granted publication date: 20081008 License type: Exclusive License Record date: 20101013 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20081008 Effective date of abandoning: 20071128 |