CN206331019U - A kind of Multifunction electricity measure and control instrument - Google Patents
A kind of Multifunction electricity measure and control instrument Download PDFInfo
- Publication number
- CN206331019U CN206331019U CN201620896495.5U CN201620896495U CN206331019U CN 206331019 U CN206331019 U CN 206331019U CN 201620896495 U CN201620896495 U CN 201620896495U CN 206331019 U CN206331019 U CN 206331019U
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- China
- Prior art keywords
- control instrument
- electricity measure
- multifunction electricity
- sampling units
- multifunction
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Abstract
The purpose of this utility model is to provide a kind of Multifunction electricity measure and control instrument, includes CPU, it is characterised in that：The CPU is connected simultaneously with AD sampling units, dump energy and temperature collect module, and electrical quantity sensor unit is connected with AD sampling units, wherein the AD sampling units are RN7302 chips.Further, it is preferred that, also include the display unit of same CPU connection, the display unit is any one in charactron, LCD display or combination.
Description
Technical field
The utility model belongs to electrical equipment technical field, and in particular to one kind is applied to power system work condition state observing and controlling
Novel meter.
Background technology
Electricity measure and control instrument is mainly used in same high-low pressure cabinet, box-type substation and supported the use, to realize to power train
The monitoring of system work condition state.At present, such instrument mainly have pointer-type and digital display type, wherein digital displaying meter be divided into voltage, electric current,
The instrument of the simple functions such as frequency, power, and by the multifunction instrument of above-mentioned a few electric parameters function simple combination.
However, existing instrument has the following disadvantages in use：
1st, measure unitary function, switch cubicle need install polylith instrument could complete the measurement of whole electric parameters, occupancy is opened
Close region limited on cabinet instrument board；
2nd, only have and measure electric parameter function, or measurement accuracy is low, it is impossible to realize the accurate measurement of electric parameter, it is impossible to which monitoring is opened
The non electrical quantities such as off status, cabinet temperature；
3rd, using traditional rectification filtering power, poor anti jamming capability is strict to power supply voltage request, it is impossible to realize
Remote control and simple defencive function.
Utility model content
To solve above-mentioned prior art problem, the purpose of this utility model is to provide a kind of measurement for collecting a variety of electric parameters
In one, and the Multifunction electricity measure and control instrument of circuit dump energy and switch cabinet temperature can be monitored.
To realize above-mentioned technical purpose, the following technical scheme of the utility model finance：
A kind of Multifunction electricity measure and control instrument, includes CPU, it is characterised in that：The center processing
Unit is connected simultaneously with AD sampling units, dump energy and temperature collect module, and electrical quantity sensor unit is with AD sampling unit phases
Connection, wherein the AD sampling units are RN7302 chips.
Further, it is preferred that, also include the display unit of same CPU connection, the display unit is
Any one in charactron, LCD display or combination.
Further, it is preferred that, also include the communication module that same CPU is connected, the communication module
For RS485 communication modules.
Further, it is preferred that, also include the push-button unit that same CPU is connected.
Further, it is preferred that, the CPU is specially STC15F2K60S2 single-chip microcomputer.
Further, it is preferred that, the electrical quantity sensor unit at least includes voltage acquisition module and current acquisition
Module.
By above technical scheme, the beneficial effects of the utility model are as follows：
1st, a variety of electric parameters measured needed for power system are concentrated on into one, three-phase current, voltage, three-phase can be measured
And total active power, reactive power, apparent energy, power factor, three-phase current, voltage harmonic content, mains frequency, four-quadrant line
The electric parameters such as electric flux；
2nd, circuit dump energy and switch cabinet temperature can be monitored, and shows and uploads related data, with as electric fire
The basis for estimation of calamity monitoring system, plays the function of protection circuit；
3rd, from metering special chip RN7302, measurement accuracy reaches 24.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Description of reference numerals：1st, single-chip microcomputer；2nd, AD sampling units；3rd, dump energy and temperature collect module；4th, button list
Member；5th, display unit；6th, RS485 communication modules；7th, electrical quantity sensor.
Embodiment
To make technical characteristic of the present utility model, realization principle and beneficial effect it can be readily appreciated that in conjunction with accompanying drawing and implementation
Example is described in further detail to the utility model, but is not construed as limiting of the present utility model.
As shown in figure 1, Multifunction electricity measure and control instrument provided by the utility model, includes model
STC15F2K60S2 single-chip microcomputer 1, the same model of single-chip microcomputer 1 is RN7302 AD sampling units 2, dump energy and temperature acquisition mould
Block 3, push-button unit 4, the display unit 5 being made up of charactron and LCD display, and RS485 communication modules 6 are connected simultaneously,
Electrical quantity sensor unit 7 is connected with AD sampling units 2, and the unit of electrical quantity sensor 7 at least includes voltage acquisition module
With current acquisition module.
The present embodiment selects STC15F2K60S2 single-chip microcomputers 1, and it includes central processing unit (CPU), is integrated with 60KB programs
Memory (Flash), 2048 byte data memories (SRAM), timer, I/O mouthfuls, high-speed a/d conversion, house dog, UART surpass
1/ serial communication port 2, CCP/PWM/PCA of High-speed Asynchronous Secial Communication mouthful, one group of high-speed synchronous serial port SPI, high-precision R/C
Temperature drift under clock, industrial environment is temperature drift 5 ‰ under ± 1%, normal temperature, and instruction execution speed is than the single-chip microcomputer of standard 8051 fast 8
~12 times；AD sampling units 2 select RN7302 chips, and the chip is applied to phase three-wire three, three-phase four-line system system, uses
+ 3.3V power supplys are powered, with Power Supply Monitoring function；Built-in 1.25V ± 1%ADC reference voltages, temperature coefficient representative value 5ppm/
DEG C, maximum 15ppm/ DEG C；With high speed SPI interface, there is provided writing protection function up to 3.5Mbps for transmission rate；With in one
Disconnected output pin, gives tacit consent to high level, when the interrupt event that OIER allows occurs, pin level upset；Work
Voltage range：3.0V-3.6V；Operating temperature range：-40℃-85℃；Meanwhile, RN7302 chip peripheries hardware can be as needed
Configure voltage x current sample circuit, SPI communication interface circuit, impulse output circuit, power supply and reset circuit, clock circuit etc..
In addition, present embodiments providing the design of dump energy and temperature collect module 3, it includes independent residue electricity
Measure Acquisition Circuit design and the design of temperature measurement circuit；Include inside LM358 in dump energy Acquisition Circuit two it is independent,
High-gain, the dual operational amplifier of internal frequency compensation, are suitable for supply voltage scope very wide single supply and use, be also applied for
Dual power supply mode of operation, it is powered using scope including sensor amplifier, DC current gain module and other all available single supplies
Use operational amplifier occasion；The design of temperature measurement circuit can use MF52 type thermal resistors, with high accuracy and quickly
The advantages of reaction.- 40~+125 DEG C, Standard resistance range is wide：0.1~500K Ω.
Claims (6)
1. a kind of Multifunction electricity measure and control instrument, includes CPU, it is characterised in that：The center processing is single
Member is connected simultaneously with AD sampling units, dump energy and temperature collect module, and electrical quantity sensor unit is connected with AD sampling units
Connect, wherein the AD sampling units are RN7302 chips.
2. a kind of Multifunction electricity measure and control instrument according to claim 1, it is characterised in that：Also include with center
The display unit of processing unit connection, the display unit is any one in charactron, LCD display or combination.
3. a kind of Multifunction electricity measure and control instrument according to claim 1, it is characterised in that：Also include with center
The communication module that processing unit is connected, the communication module is RS485 communication modules.
4. a kind of Multifunction electricity measure and control instrument according to claim 1, it is characterised in that：Also include with center
The push-button unit that processing unit is connected.
5. a kind of Multifunction electricity measure and control instrument according to claim 1, it is characterised in that：The center processing is single
Member is specially STC15F2K60S2 single-chip microcomputer.
6. a kind of Multifunction electricity measure and control instrument according to claim 1, it is characterised in that：The electrical quantity sensor
Unit at least includes voltage acquisition module and current acquisition module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896495.5U CN206331019U (en) | 2016-08-17 | 2016-08-17 | A kind of Multifunction electricity measure and control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896495.5U CN206331019U (en) | 2016-08-17 | 2016-08-17 | A kind of Multifunction electricity measure and control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206331019U true CN206331019U (en) | 2017-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620896495.5U Active CN206331019U (en) | 2016-08-17 | 2016-08-17 | A kind of Multifunction electricity measure and control instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206331019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109300298A (en) * | 2018-11-16 | 2019-02-01 | 华东理工大学 | A kind of energy data information acquisition system with internet of things functional |
-
2016
- 2016-08-17 CN CN201620896495.5U patent/CN206331019U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109300298A (en) * | 2018-11-16 | 2019-02-01 | 华东理工大学 | A kind of energy data information acquisition system with internet of things functional |
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