CN202177657U - Digital electrical parameter measuring instrument - Google Patents
Digital electrical parameter measuring instrument Download PDFInfo
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- CN202177657U CN202177657U CN2011202816707U CN201120281670U CN202177657U CN 202177657 U CN202177657 U CN 202177657U CN 2011202816707 U CN2011202816707 U CN 2011202816707U CN 201120281670 U CN201120281670 U CN 201120281670U CN 202177657 U CN202177657 U CN 202177657U
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Abstract
The utility model relates to the technical field of intelligent instruments in the electric power system, and provides a digital electrical parameter measuring instrument, which comprises a power module, a singlechip central processing unit, an electrical parameter metering module, a communication module, and a relay control unit, wherein the power module is connected with the electrical parameter metering module, the communication module, and the singlechip central processing unit for power supply; the electrical parameter metering module is connected to the singlechip central processing unit; the relay control unit is connected to the singlechip central processing unit; the communication module is connected to the singlechip central processing unit; and the singlechip central processing unit is also connected with a data output module, a data input module, and a data storage module. The digital electrical parameter measuring instrument has the functions of measurement, display, data communications, relay output, electric energy metering, and the like, and has the advantages of perfect functions, simple structure, small size, convenience in carrying, and wide measurable current range.
Description
Technical field
The utility model relates to Power System Intelligent type field of instrumentation technology, is a kind of digital electrical parameter measurement instrument specifically.
Background technology
At present common on the market digital electrical parameter measurement instrument or volume are bigger; Be not suitable for carrying field work, or function is comparatively simple, measurable range of current is less; Do not possess data communication; Functions such as output control, or similar functions is perfect inadequately, can not satisfy the requirement of modern power industry systematic survey management.
Summary of the invention
The purpose of the utility model is exactly in order to overcome above-mentioned weak point of the prior art; And a kind of portable digital electrical parameter measuring instrument is provided, have functions such as measurement, demonstration, data communication, relay output, electric energy metrical, its perfect in shape and function; Simple in structure; Advantages of small volume, easy to carry, measurable range of current is bigger simultaneously.
The purpose of the utility model realizes through following technical measures: a kind of digital electrical parameter measurement instrument; Comprise power module, single-chip microcomputer CPU, electrical quantity metering module, communication module, relay control unit; The power supply that links to each other with electrical quantity metering module, communication module and single-chip microcomputer CPU respectively of said power module; The electrical quantity metering module is connected to the single-chip microcomputer CPU; Relay control unit is connected to the single-chip microcomputer CPU, and communication module is connected to the single-chip microcomputer CPU, and said single-chip microcomputer CPU also is connected with data outputting module, data input module and data memory module.
In technique scheme, said electrical quantity metering module is made up of current sampling circuit, voltage sampling circuit, outer clock circuit, wide-range computation chip and peripheral circuit thereof; The output terminal of said current sampling circuit and voltage sampling circuit links to each other with the input end of wide-range computation chip respectively, and the wide-range computation chip links to each other with outer clock circuit, and the output terminal of wide-range computation chip links to each other with the single-chip microcomputer CPU; Said current sampling circuit is made up of copper-manganese sampling channel 1, copper-manganese sampling channel 2, path protection element, channel selector switch; Wherein two copper-manganese series connections of copper-manganese sampling channel 1 and copper-manganese sampling channel 2 are between live wire input and live wire output; Be connected with the path protection device between copper-manganese sampling channel 1 and the copper-manganese sampling channel 2; The input end of said channel selector switch links to each other with the single-chip microcomputer CPU, and output terminal links to each other with copper-manganese sampling channel 1, copper-manganese sampling channel 2 respectively.
In technique scheme; Said copper-manganese sampling channel 1 comprises copper-manganese sampling thief MT1, resistance R 1, resistance R 2, capacitor C 1 and capacitor C 2; Said copper-manganese sampling channel 2 comprises copper-manganese sampling thief MT2, resistance R 16, resistance R 17, capacitor C 11 and capacitor C 12; Said voltage sampling circuit comprises resistance R 3 ~ resistance R 7, capacitor C 3 and capacitor C 4; Said outer clock circuit comprises resistance R 15, crystal Y1, capacitor C 13 and capacitor C 14, and said wide-range computation chip and peripheral circuit thereof comprise computation chip U1, resistance R 8 ~ resistance R 14, capacitor C 5 ~ capacitor C 10, and computation chip U1 is the ATT7053 chip; Wherein, Live wire output connects 3 pin of copper-manganese sampling thief MT1; 2 pin of copper-manganese sampling thief MT1 are connected to 9 pin of computation chip U1 through resistance R 2; 3 pin of copper-manganese sampling thief MT1 are connected to 8 pin of computation chip U1 through resistance R 1, and capacitor C 1 is connected between 8 pin and GND of computation chip U1, and capacitor C 2 is connected between 9 pin and GND of computation chip U1; Said live wire input connects 1 pin of copper-manganese sampling thief MT2 and is connected to GND; Be connected with the path protection element between 1 pin of 3 pin of copper-manganese sampling thief MT2 and copper-manganese sampling thief MT1; 2 pin of copper-manganese sampling thief MT2 are connected to 11 pin of computation chip U1 through resistance R 17; 3 pin of copper-manganese sampling thief MT2 are connected to 10 pin of computation chip U1 through resistance R 16, and capacitor C 11 is connected between 10 pin and GND of computation chip U1, and capacitor C 12 is connected between 11 pin and GND of computation chip U1; Said zero line input is connected to 6 pin of computation chip U1 through resistance R 3 ~ resistance R 5; 6 pin of computation chip U1 are connected to GND through resistance R 6; Capacitor C 3 is connected in parallel on the two ends of resistance R 6, and 7 pin of computation chip U1 are connected to GND through resistance R 7, and capacitor C 4 is connected in parallel on the two ends of resistance R 7; Said crystal Y1 is connected between 22 pin and 23 pin of computation chip U1; Resistance R 15 is connected in parallel on the two ends of crystal Y1, and capacitor C 13 1 ends are connected to 23 pin of computation chip U1, and an end is connected to GND; Capacitor C 14 1 ends are connected to 22 pin of computation chip U1, and an end is connected to GND; The 1 foot meridian capacitor C5 of said computation chip U1 is connected to GND; 2 pin of computation chip U1 are connected to VDD through resistance R 8, are connected to GND through capacitor C 7, and the 3 foot meridian capacitor C6 of computation chip U1 are connected to GND; 4 pin of computation chip U1 are connected to 2 pin of computation chip U1; 5 pin of computation chip U1 are connected to 1 pin of computation chip U1, and are connected to GND through capacitor C 8, and the 12 foot meridian capacitor C9 of computation chip U1 are connected to GND; 13 pin of computation chip U1 are connected to GND; 16 pin of computation chip U1 are connected to the metrical pulse mouth of said single-chip microcomputer CPU through resistance R 14, and 16 pin of computation chip U1 are connected to GND through resistance R 14 and capacitor C 10, and 18 pin of computation chip U1 are connected to the chip selection signal mouth of said single-chip microcomputer CPU through resistance R 13; 19 pin of computation chip U1 are connected to the data input port of said single-chip microcomputer CPU through resistance R 12; Be connected to VDD through resistance R 9,20 pin of computation chip U1 are connected to the data output of said single-chip microcomputer CPU through resistance R 11, and 21 pin of computation chip U1 are connected to the clock signal mouth of said single-chip microcomputer CPU through resistance R 10.
Above-mentioned VDD is the supply voltage of computation chip U1, is generally 3.6V.
The usefulness of the utility model is: the electrical quantity metering section of digital electrical parameter measurement instrument adopts two copper-manganeses and the scheme that channel selector switch combines on hardware; Metering live wire electric current cooperates the wide-range computation chip, changes range through the Single-chip Controlling channel selecting; Make the measures range of electrical parameter measuring instrument reach ultra wide-range; Realizing the high-acruracy survey of 2mA ~ 60A, is a intelligent electric power instrument with functions such as measurement, demonstration, data communication, relay output, electric energy metricals, perfect in shape and function; Advantages of small volume, easy to carry.
Description of drawings
Fig. 1 is the circuit theory diagrams of digital electrical parameter measurement instrument in the utility model.
Fig. 2 is the circuit theory diagrams of electrical quantity metering module in the utility model.
Fig. 3 is the circuit theory diagrams of current sampling circuit in the utility model.
Fig. 4 is the circuit connection diagram of electrical quantity metering module in the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
As shown in Figure 1; Present embodiment provides a kind of digital electrical parameter measurement instrument; Comprise power module, single-chip microcomputer CPU, electrical quantity metering module, communication module, relay control unit; The power supply that links to each other with electrical quantity metering module, communication module and single-chip microcomputer CPU respectively of said power module, the electrical quantity metering module is connected to the single-chip microcomputer CPU, and relay control unit is connected to the single-chip microcomputer CPU; Communication module is connected to the single-chip microcomputer CPU, and said single-chip microcomputer CPU also is connected with data outputting module, data input module and data memory module.
In the foregoing description, as shown in Figure 2, the electrical quantity metering module is made up of current sampling circuit, voltage sampling circuit, outer clock circuit, wide-range computation chip and peripheral circuit thereof; The output terminal of said current sampling circuit and voltage sampling circuit links to each other with the input end of wide-range computation chip respectively, and the wide-range computation chip links to each other with outer clock circuit, and the output terminal of wide-range computation chip links to each other with the single-chip microcomputer CPU.
As shown in Figure 3; In the foregoing description; Said current sampling circuit is made up of copper-manganese sampling channel 1, copper-manganese sampling channel 2, path protection element, channel selector switch; Wherein two copper-manganese series connections of copper-manganese sampling channel 1 and copper-manganese sampling channel 2 are between live wire input and live wire output; Be connected with the path protection device between copper-manganese sampling channel 1 and the copper-manganese sampling channel 2, said channel selector switch links to each other with the single-chip microcomputer CPU, and output terminal links to each other with copper-manganese sampling channel 1, copper-manganese sampling channel 2 respectively.The channel selector switch of selecting for use is the closed type device; Said by default metering units is with the metering that is as the criterion of the electric current of copper-manganese sampling channel 1; When sample rate current during less than setting value, the single-chip microcomputer CPU is broken off channel selector switch, and electric current flows through copper-manganese sampling channel 2; Said metering units is with the metering that is as the criterion of the electric current of passage 2, thereby reaches the purpose that range switches.Between said copper-manganese sampling channel 1 and copper-manganese sampling channel 2, be connected with the path protection device, prevent because of electric current change carry out passage when switching to passage 2 copper-manganese components from being damaged.
As shown in Figure 4; In the foregoing description; Said copper-manganese sampling channel 1 comprises copper-manganese sampling thief MT1, resistance R 1, resistance R 2, capacitor C 1 and capacitor C 2; Said copper-manganese sampling channel 2 comprises copper-manganese sampling thief MT2, resistance R 16, resistance R 17, capacitor C 11 and capacitor C 12, and said voltage sample unit comprises resistance R 3 ~ resistance R 7, capacitor C 3 and capacitor C 4, and said external clock unit comprises resistance R 15, crystal Y1, capacitor C 13 and capacitor C 14; Said wide-range computation chip and peripheral circuit thereof comprise computation chip U1, resistance R 8 ~ resistance R 14, capacitor C 5 ~ capacitor C 10, and computation chip U1 is the ATT7053 chip; Wherein, Live wire output connects 3 pin of copper-manganese sampling thief MT1; 2 pin of copper-manganese sampling thief MT1 are connected to 9 pin of computation chip U1 through resistance R 2; 3 pin of copper-manganese sampling thief MT1 are connected to 8 pin of computation chip U1 through resistance R 1, and capacitor C 1 is connected between 8 pin and GND of computation chip U1, and capacitor C 2 is connected between 9 pin and GND of computation chip U1; Said live wire input connects 1 pin of copper-manganese sampling thief MT2 and is connected to GND; Be connected with the path protection element between 1 pin of 3 pin of copper-manganese sampling thief MT2 and copper-manganese sampling thief MT1; 2 pin of copper-manganese sampling thief MT2 are connected to 11 pin of computation chip U1 through resistance R 17; 3 pin of copper-manganese sampling thief MT2 are connected to 10 pin of computation chip U1 through resistance R 16, and capacitor C 11 is connected between 10 pin and GND of computation chip U1, and capacitor C 12 is connected between 11 pin and GND of computation chip U1; Said zero line input is connected to 6 pin of computation chip U1 through resistance R 3 ~ resistance R 5; 6 pin of computation chip U1 are connected to GND through resistance R 6; Capacitor C 3 is connected in parallel on the two ends of resistance R 6, and 7 pin of computation chip U1 are connected to GND through resistance R 7, and capacitor C 4 is connected in parallel on the two ends of resistance R 7; Said crystal Y1 is connected between 22 pin and 23 pin of computation chip U1; Resistance R 15 is connected in parallel on the two ends of crystal Y1, and capacitor C 13 1 ends are connected to 23 pin of computation chip U1, and an end is connected to GND; Capacitor C 14 1 ends are connected to 22 pin of computation chip U1, and an end is connected to GND; The 1 foot meridian capacitor C5 of said computation chip U1 is connected to GND; 2 pin of computation chip U1 are connected to VDD through resistance R 8, are connected to GND through capacitor C 7, and the 3 foot meridian capacitor C6 of computation chip U1 are connected to GND; 4 pin of computation chip U1 are connected to 2 pin of computation chip U1; 5 pin of computation chip U1 are connected to 1 pin of computation chip U1, and are connected to GND through capacitor C 8, and the 12 foot meridian capacitor C9 of computation chip U1 are connected to GND; 13 pin of computation chip U1 are connected to GND; 16 pin of computation chip U1 are connected to the metrical pulse mouth of said single-chip microcomputer CPU through resistance R 14, and 16 pin of computation chip U1 are connected to GND through resistance R 14 and capacitor C 10, and 18 pin of computation chip U1 are connected to the chip selection signal mouth of said single-chip microcomputer CPU through resistance R 13; 19 pin of computation chip U1 are connected to the data input port of said single-chip microcomputer CPU through resistance R 12; Be connected to VDD through resistance R 9,20 pin of computation chip U1 are connected to the data output of said single-chip microcomputer CPU through resistance R 11, and 21 pin of computation chip U1 are connected to the clock signal mouth of said single-chip microcomputer CPU through resistance R 10.
Above-mentioned VDD is the computation chip supply voltage, selects 3.6V in the instance for use.
The content that this instructions is not done to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. digital electrical parameter measurement instrument; Comprise power module, single-chip microcomputer CPU, electrical quantity metering module, communication module, relay control unit; It is characterized in that: the power supply that links to each other with electrical quantity metering module, communication module and single-chip microcomputer CPU respectively of said power module; The electrical quantity metering module is connected to the single-chip microcomputer CPU; Relay control unit is connected to the single-chip microcomputer CPU, and communication module is connected to the single-chip microcomputer CPU, and said single-chip microcomputer CPU also is connected with data outputting module, data input module and data memory module.
2. digital electrical parameter measurement instrument according to claim 1 is characterized in that: said electrical quantity metering module is made up of current sampling circuit, voltage sampling circuit, outer clock circuit, wide-range computation chip and peripheral circuit thereof; The output terminal of said current sampling circuit and voltage sampling circuit links to each other with the input end of wide-range computation chip respectively, and the wide-range computation chip links to each other with outer clock circuit, and the output terminal of wide-range computation chip links to each other with the single-chip microcomputer CPU; Said current sampling circuit is made up of copper-manganese sampling channel 1, copper-manganese sampling channel 2, path protection element, channel selector switch; Wherein two copper-manganese series connections of copper-manganese sampling channel 1 and copper-manganese sampling channel 2 are between live wire input and live wire output; Be connected with the path protection device between copper-manganese sampling channel 1 and the copper-manganese sampling channel 2; The input end of said channel selector switch links to each other with the single-chip microcomputer CPU, and output terminal links to each other with copper-manganese sampling channel 1, copper-manganese sampling channel 2 respectively.
3. digital electrical parameter measurement instrument according to claim 2; It is characterized in that: said copper-manganese sampling channel 1 comprises copper-manganese sampling thief MT1, resistance R 1, resistance R 2, capacitor C 1 and capacitor C 2; Said copper-manganese sampling channel 2 comprises copper-manganese sampling thief MT2, resistance R 16, resistance R 17, capacitor C 11 and capacitor C 12; Said voltage sampling circuit comprises resistance R 3 ~ resistance R 7, capacitor C 3 and capacitor C 4; Said outer clock circuit comprises resistance R 15, crystal Y1, capacitor C 13 and capacitor C 14, and said wide-range computation chip and peripheral circuit thereof comprise computation chip U1, resistance R 8 ~ resistance R 14, capacitor C 5 ~ capacitor C 10, and computation chip U1 is the ATT7053 chip; Wherein, Live wire output connects 3 pin of copper-manganese sampling thief MT1; 2 pin of copper-manganese sampling thief MT1 are connected to 9 pin of computation chip U1 through resistance R 2; 3 pin of copper-manganese sampling thief MT1 are connected to 8 pin of computation chip U1 through resistance R 1, and capacitor C 1 is connected between 8 pin and GND of computation chip U1, and capacitor C 2 is connected between 9 pin and GND of computation chip U1; Said live wire input connects 1 pin of copper-manganese sampling thief MT2 and is connected to GND; Be connected with the path protection element between 1 pin of 3 pin of copper-manganese sampling thief MT2 and copper-manganese sampling thief MT1; 2 pin of copper-manganese sampling thief MT2 are connected to 11 pin of computation chip U1 through resistance R 17; 3 pin of copper-manganese sampling thief MT2 are connected to 10 pin of computation chip U1 through resistance R 16, and capacitor C 11 is connected between 10 pin and GND of computation chip U1, and capacitor C 12 is connected between 11 pin and GND of computation chip U1; Said zero line input is connected to 6 pin of computation chip U1 through resistance R 3 ~ resistance R 5; 6 pin of computation chip U1 are connected to GND through resistance R 6; Capacitor C 3 is connected in parallel on the two ends of resistance R 6, and 7 pin of computation chip U1 are connected to GND through resistance R 7, and capacitor C 4 is connected in parallel on the two ends of resistance R 7; Said crystal Y1 is connected between 22 pin and 23 pin of computation chip U1; Resistance R 15 is connected in parallel on the two ends of crystal Y1, and capacitor C 13 1 ends are connected to 23 pin of computation chip U1, and an end is connected to GND; Capacitor C 14 1 ends are connected to 22 pin of computation chip U1, and an end is connected to GND; The 1 foot meridian capacitor C5 of said computation chip U1 is connected to GND; 2 pin of computation chip U1 are connected to VDD through resistance R 8, are connected to GND through capacitor C 7, and the 3 foot meridian capacitor C6 of computation chip U1 are connected to GND; 4 pin of computation chip U1 are connected to 2 pin of computation chip U1; 5 pin of computation chip U1 are connected to 1 pin of computation chip U1, and are connected to GND through capacitor C 8, and the 12 foot meridian capacitor C9 of computation chip U1 are connected to GND; 13 pin of computation chip U1 are connected to GND; 16 pin of computation chip U1 are connected to the metrical pulse mouth of said single-chip microcomputer CPU through resistance R 14, and 16 pin of computation chip U1 are connected to GND through resistance R 14 and capacitor C 10, and 18 pin of computation chip U1 are connected to the chip selection signal mouth of said single-chip microcomputer CPU through resistance R 13; 19 pin of computation chip U1 are connected to the data input port of said single-chip microcomputer CPU through resistance R 12; Be connected to VDD through resistance R 9,20 pin of computation chip U1 are connected to the data output of said single-chip microcomputer CPU through resistance R 11, and 21 pin of computation chip U1 are connected to the clock signal mouth of said single-chip microcomputer CPU through resistance R 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202816707U CN202177657U (en) | 2011-08-04 | 2011-08-04 | Digital electrical parameter measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202816707U CN202177657U (en) | 2011-08-04 | 2011-08-04 | Digital electrical parameter measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN202177657U true CN202177657U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202816707U Expired - Fee Related CN202177657U (en) | 2011-08-04 | 2011-08-04 | Digital electrical parameter measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483412A (en) * | 2016-12-03 | 2017-03-08 | 河池学院 | A kind of electrical quantity composite measurement management system |
| CN107072011A (en) * | 2017-05-22 | 2017-08-18 | 南京泰杰赛智能科技有限公司 | A kind of intelligent illuminating switch controller with loop electric parameter measurement |
-
2011
- 2011-08-04 CN CN2011202816707U patent/CN202177657U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483412A (en) * | 2016-12-03 | 2017-03-08 | 河池学院 | A kind of electrical quantity composite measurement management system |
| CN107072011A (en) * | 2017-05-22 | 2017-08-18 | 南京泰杰赛智能科技有限公司 | A kind of intelligent illuminating switch controller with loop electric parameter measurement |
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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: 20120328 Termination date: 20160804 |