CN201697963U - Voltage monitoring management terminal - Google Patents
Voltage monitoring management terminal Download PDFInfo
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- CN201697963U CN201697963U CN2010202032150U CN201020203215U CN201697963U CN 201697963 U CN201697963 U CN 201697963U CN 2010202032150 U CN2010202032150 U CN 2010202032150U CN 201020203215 U CN201020203215 U CN 201020203215U CN 201697963 U CN201697963 U CN 201697963U
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Abstract
The utility model discloses a voltage monitoring management terminal which comprises a CPU master control chip unit, a power supply unit and a voltage collecting unit, wherein the power supply unit and the voltage collecting unit are connected with the CPU master control chip unit; a clock control part of the CPU master control chip unit comprises a clock chip which is assessed into a CPU master control chip; the power supply unit is connected with a power supply chip through a voltage transformer and a rectifier bridge; two single power supplies are provided; the power supply unit is also connected with an emergency power supply circuit provided with a rechargeable battery; the voltage collecting unit comprises the voltage transformer and an A/D conversion chip, and a voltage sampling signal is transmitted into the CPU master control chip through the voltage transformer and the A/D conversion chip; a storage part comprises an external FRAM and FLASH; and the voltage monitoring management terminal has rapidness, accuracy, real-time property and stability.
Description
Technical field
The utility model relates to a kind of voltage monitoring equipment, the particularly a kind of voltage monitoring office terminal that can carry out monitoring management to line voltage.
Background technology
Quality of voltage is one of important indicator of the quality of power supply, in order to improve quality of voltage, keeps reactive balance, the stabilization of power grids, to the voltage monitoring point installing voltage monitoring office terminal of user's receiving end of each electric pressure.But, there are a lot of problems in voltage monitoring office terminal in the market: the circumstance complication that monitoring device is installed and used, disturbing factor such as signal and noise uncertain and install self measuring error can make the data of some monitoring point accurately obtain in real time; The operating temperature range of monitoring device is narrower; The power consumption of monitoring device itself is higher, and the data of terminal can't in time preserve and send when powering-off state occurring; The solution that the telecommunication problem of monitoring device is also never good causes still having many local needs to be undertaken by the mode of manual metering, greatly reduces work efficiency.
These problems and factor all influence in the electric system accuracy and the reliability to voltage monitoring, thereby the management and the examination of power system reactive power management and quality of voltage brought a lot of troubles.
The utility model content
Technical problem to be solved in the utility model provides the voltage monitoring office terminal that a kind of processing power is strong, function is many, degree of accuracy is high and real-time is stronger.
For solving the problems of the technologies described above the technical solution of the utility model be: a kind of voltage monitoring office terminal, comprise CPU main control chip unit, power supply unit and voltage acquisition unit, the output terminal of power supply unit, voltage acquisition unit is connected with the input end of CPU main control chip unit, CPU main control chip unit comprises clock control part and CPU main control chip, clock control partly comprises clock chip, and clock chip inserts the CPU main control chip; Power supply unit is connected power supply chip by voltage transformer (VT) with rectifier bridge, provides two-way independent power supply, and power supply unit also is connected with the standby power supply circuit of rechargeable battery; Voltage acquisition unit comprises voltage transformer (VT) and A/D conversion chip, and voltage sampling signal transfers to the CPU main control chip through voltage transformer (VT), A/D conversion chip.
For improving the operational efficiency of system, above-mentioned CPU main control chip constitutes for the ARM microcontroller by μ COSII operating system.
For power supply being provided for the ARM microcontroller, between power supply chip and CPU main control chip, be connected with the SP6205EM5-33 chip, provide the power supply of 3.3V.
Above-mentioned voltage monitoring office terminal also comprises the data communication unit, and the data communication unit comprises GPRS wireless communication module, infrared data communication module, 485/232 data communication module.
When described data communication unit by using infrared data communication module was communicated by letter, the voltage monitoring office terminal disposed the infrared communication equipment that can carry out the infrared data transmission.
The advantage of voltage monitoring of the present utility model office terminal is: voltage monitoring of the present utility model office terminal has rapidity, accuracy, real-time and stability; High-precision ADC, multiple filter design make terminal for the signal that is monitored very high precision be arranged; The system design of low-power consumption, wide operating range, can be in wider temperature range operate as normal; Adopt the two-way power supply chip to use the power supply system of two-way sub-module, add reserve battery, guarantee the reliability of powering; Gather, statistics, wireless data is far specially in one; The modular construction design, communication interface is abundant.
Description of drawings
Fig. 1 is the system construction drawing of voltage monitoring of the present utility model office terminal;
Fig. 2 is the schematic diagram of CPU main control chip unit, voltage monitoring of the present utility model office terminal;
Fig. 3 is the schematic diagram of voltage monitoring of the present utility model office terminal power unit;
Fig. 4 is the schematic diagram of voltage monitoring of the present utility model office terminal voltage sample part;
Fig. 5 is the schematic diagram of voltage monitoring of the present utility model office terminal A/D conversion portion;
Fig. 6 is the schematic diagram of voltage monitoring of the present utility model office terminal storage unit;
Fig. 7 is the schematic diagram of 485/232 data communication unit, voltage monitoring of the present utility model office terminal;
Fig. 8 is GPRS Principle of Communication figure of the present utility model.
Embodiment
Voltage monitoring of the present utility model office terminal shown in the system module schematic diagram of the voltage monitoring office terminal of Fig. 1, consists of the following components: 1, CPU main control chip unit; 2, voltage acquisition unit 3, power supply unit; 4, storage unit; 5, display unit; 5, the communication unit that constitutes by GPRS data communication, infrared data communication, 485/232 data communication.It is to be the system core with the ARM chip, and is integrated to outside voltage acquisition, realizes fieldbus by RS232, RS485, and keyboard input, liquid crystal output realize man-machine interface, also have and functional integrated circuits such as calendar/clock chip, power management.
As shown in Figure 2, the CPU main control chip can adopt the LPC2138 chip of PHILIPS Co., and this chip is an ARM7-TDMI-S nuclear microprocessor.The hardware module of this part mainly partly is made of main control chip power part, clock control.The clock signal of main control chip is provided the clock signal input of 11.0592MHz by the time brilliant chip of Surface Mount.
Power supply unit as shown in Figure 3, it gives power supply chip LM2576T, TL750L05CLP power supply by PT and rectifier bridge with the power supply that the AC power of sampling converts direct current to, enable chip to all needs+5V power supply in the system provide two-way independent+the 5V power supply.
Situation when when the device design, also having considered the device outage, thus the standby power supply circuit that uses rechargeable battery designed especially, to prevent from when device cuts off the power supply, also can guarantee to store not losing and normal communication function of data.Because the supply voltage that the ARM microcontroller that uses at present need provide is 3.3V, therefore also need use the SP6205EM5-33 chip that the 3.3V power supply that needs is provided as the ARM microcontroller at power unit.
The voltage sample part as shown in Figure 4, via voltage transformer (VT) sampled voltage is become the thief hatch that semaphore inputs to the A/D conversion chip, the digital data transmission that obtains sampled voltage is handled it to CPU, CPU counts the moment that maximum voltage value, minimum voltage value and these magnitudes of voltage of every day or every month take place by the voltage signal that obtains by preset program, counts statistical values such as the rate of qualified voltage of every day or every month, super upper limit rate and super lower limit rate and sends into storage unit, display unit to do corresponding storage, demonstration work.The data communication part then will be stored good data and send to the equipment that carries out data communication with it in official hour.Thereby finish the real-time monitoring management of voltage monitoring.
As shown in Figure 5, the voltage acquisition part is the sample conversion that the special-purpose AD chip of the acceptable voltage input of digit chip carries out sampled voltage by voltage transformer (VT) with voltage transitions then.The AD chip can adopt the CS5460 chip, the CS5460 chip is the single phase bidirectional power/energy measuring IC chip that has serial line interface of the up-to-date release of CRYSTAL company, have simple in structure, multiple functional, the characteristics of function admirable, these characteristics make it be more convenient for Microprocessor Interface and can realize the measurement of voltage, electric current, power easily and function such as power consumption accumulation.
Fig. 6 is a storage unit schematic diagram of the present utility model, the data storage part then adopts outside FRAM and FLASH storage data, because the characteristic that the FRAM access time is short, with systematic parameter, terminal same day, of that month data storage wherein, each historical data is deposited among the relatively large FLASH of memory capacity.By this mechanism, make terminal have the advantage that memory data output is big and access time is short.
As shown in Figure 7,485/232 data communication is then carried out communication by DB9 mouth and computer and other compatible terminal, for the exchanges data of terminal and miscellaneous equipment provides how suitable passage, the user can carry out corresponding configuration to determine whether needs adopt according to field condition.
Fig. 8 is GPRS Principle of Communication figure, the GPRS wireless communication module carries out communication by serial ports and instrument, communication protocol generally adopts the AT order, according to the AT Command Set communication with it that communication module provided, provide module necessary power supply simultaneously, instrument can be carried out wireless network communication behind the signals such as clock.
The infrared data communication module is used to realize and the exchanges data of infrared equipment that this part makes the user to carry out terminal parameter easily by infrared equipment and reads and be provided with by the transfer function of infrared emission and receiver pope realization data.
The purposes of voltage monitoring office terminal is that the voltage monitoring office terminal is installed near the monitoring point the occasion that meets mounting condition, terminal can be gathered the bus of 1～3 tunnel (100V/220V/380V is optional) or the voltage of outlet respectively by customer requirements, as require to carry out the single channel collection and then the input end of the power supply sampling one of terminal is connected the monitoring point output terminal of sampling with the working power terminal, the input end of sampled point is input to D.C mutual-inductor with the voltage that collects, D.C mutual-inductor is imported the voltage that obtains the VIN+ pin of AD chip, another input end VIN-pin ground connection of AD chip, the voltage VIN+ of AD chip conversion and the difference of VIN-are the output voltage of D.C mutual-inductor.The DIN of AD chip and DOUT pin then are responsible for communicating with the LPC2138 processor, thereby the voltage data that will obtain after will change is on request passed to the LPC2138 processor.The working power terminal then inputs to PT with power supply, and by rectifier bridge alternating voltage is become DC voltage to power to LM2576T, TL750L05CLP chip.This device adopts two-way+discrete power supply technique of 5V power supply, has both strengthened the reliability of power supply, has also reduced the overall power of system.
After LPC2138 obtains voltage data, will store the instantaneous voltage value according to customer requirements, acquisition interval can be selected.Can add up simultaneously day, month average voltage on request, maximum/little value and going out now, super on/the lower limit time, rate of qualified voltage, super on/data such as lower limit rate, timing statistics, adopt a second level to gather a minute mean value algorithm and add up.
Because therefore the limited storage space of ARM chip itself increases outer FRAM of sheet and FLASH and guarantees enough data spaces.By SO and SI pin, when needs storage same day, of that month statistics, processor at first carries out issuing of write order to the FRAM chip, and then day, month statistics that needs are write write FRAM and get final product to the read-write in FRAM space.Then pass through the also mode of port communications for FLASH chip K9F5608U, the DB0-DB7 pin is that data are, once can transmit the data volume of a byte, therefore can accelerate the read or write speed of processor to the FLASH space, guarantees the real-time of storage.
The communication mode of voltage monitoring office terminal has adopted multiple transmission means, can realize that wireless GPRS, dialing, RS485, RS232 and Ethernet carry out communication by SIM300 module, MAX3232 chip, SN65LBC184D chip.
The important technological parameters of voltage monitoring of the present utility model office terminal:
1. the instrument clock stability satisfies 1s/d, can keep more than 50000 hours after the power down.
2. standby power supply can be kept work 2～8 hours.
3. the monitoring voltage scope is limited to rated voltage ± 30%.
4. instrument precision: measuring error≤0.2%, sensitivity≤0.5%, statistical accuracy 0.02%, signal input circuit power consumption≤0.6VA, electric power loop power consumption≤3VA.
5. memory capacity satisfies 2～8MB.
6. use the climatic environment condition: ambient temperature range is-25 ℃～+ 75 ℃, relative humidity 10%～100%, atmospheric pressure 70～106kPa.
7. electrical specification such as device security and interference free performance satisfies the requirement in " DL/T743-2001: electric flux terminal unit ", " DL/T698-1999: low-voltage power user automatic meter reading system technical requirement ", " the GB4793 electronic measuring instrument safety requirements " and " GB6593 electronic measuring instrument inspection rule ".
8. mean time between failures (MTBF) 〉=50,000 hour.
Claims (5)
1. voltage monitoring office terminal, comprise CPU main control chip unit, power supply unit and voltage acquisition unit, the output terminal of power supply unit, voltage acquisition unit is connected with the input end of CPU main control chip unit, it is characterized in that: CPU main control chip unit comprises clock control part and CPU main control chip, clock control partly comprises clock chip, and clock chip inserts the CPU main control chip; Power supply unit is connected power supply chip by voltage transformer (VT) with rectifier bridge, and power supply unit also is connected with the standby power supply circuit of rechargeable battery; Voltage acquisition unit comprises voltage transformer (VT) and A/D conversion chip, and voltage sampling signal transfers to the CPU main control chip through voltage transformer (VT), A/D conversion chip.
2. voltage monitoring according to claim 1 office terminal is characterized in that: described CPU main control chip constitutes for the ARM microcontroller by μ COSII operating system.
3. voltage monitoring according to claim 2 office terminal is characterized in that: be connected with the SP6205EM5-33 chip between power supply chip and CPU main control chip.
4. according to claim 1,2 or 3 described voltage monitoring office terminals, it is characterized in that: described voltage monitoring office terminal also comprises the data communication unit, and the data communication unit comprises GPRS wireless communication module, infrared data communication module, 485/232 data communication module.
5. according to claim 1,2 or 3 described voltage monitoring office terminals, it is characterized in that: described voltage monitoring office terminal also comprises storage unit, and storage unit comprises outside FRAM and FLASH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202032150U CN201697963U (en) | 2010-05-12 | 2010-05-12 | Voltage monitoring management terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202032150U CN201697963U (en) | 2010-05-12 | 2010-05-12 | Voltage monitoring management terminal |
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| CN201697963U true CN201697963U (en) | 2011-01-05 |
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| CN2010202032150U Expired - Fee Related CN201697963U (en) | 2010-05-12 | 2010-05-12 | Voltage monitoring management terminal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570199A (en) * | 2012-01-19 | 2012-07-11 | 东北大学 | Intelligent power utilization socket |
| CN103901259A (en) * | 2014-04-15 | 2014-07-02 | 国家电网公司 | Single-phase alternating-current voltage recording instrument |
| CN104330612A (en) * | 2014-11-27 | 2015-02-04 | 国家电网公司 | Resonant overvoltage monitoring system and method |
| CN104978847A (en) * | 2015-07-16 | 2015-10-14 | 深圳市富斯遥控模型技术有限公司 | Intelligent remote control system of battery and intelligent remote control model |
| CN105067876A (en) * | 2015-08-12 | 2015-11-18 | 江苏省电力公司苏州供电公司 | Tail-end voltage qualified rate monitoring device |
| CN105070029A (en) * | 2015-08-12 | 2015-11-18 | 江苏省电力公司苏州供电公司 | Carrier meter reading module having voltage eligibility rate monitoring function |
| CN107543987A (en) * | 2017-08-30 | 2018-01-05 | 郑州云海信息技术有限公司 | A kind of Smart Rack condition monitoring systems and monitoring method |
-
2010
- 2010-05-12 CN CN2010202032150U patent/CN201697963U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570199A (en) * | 2012-01-19 | 2012-07-11 | 东北大学 | Intelligent power utilization socket |
| CN103901259A (en) * | 2014-04-15 | 2014-07-02 | 国家电网公司 | Single-phase alternating-current voltage recording instrument |
| CN104330612A (en) * | 2014-11-27 | 2015-02-04 | 国家电网公司 | Resonant overvoltage monitoring system and method |
| CN104330612B (en) * | 2014-11-27 | 2017-07-07 | 国家电网公司 | A kind of resonance overvoltage monitoring system and method |
| CN104978847A (en) * | 2015-07-16 | 2015-10-14 | 深圳市富斯遥控模型技术有限公司 | Intelligent remote control system of battery and intelligent remote control model |
| CN105067876A (en) * | 2015-08-12 | 2015-11-18 | 江苏省电力公司苏州供电公司 | Tail-end voltage qualified rate monitoring device |
| CN105070029A (en) * | 2015-08-12 | 2015-11-18 | 江苏省电力公司苏州供电公司 | Carrier meter reading module having voltage eligibility rate monitoring function |
| CN107543987A (en) * | 2017-08-30 | 2018-01-05 | 郑州云海信息技术有限公司 | A kind of Smart Rack condition monitoring systems and monitoring method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tu Labao Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Jiangsu Gufeng Power Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20140512 |
|
| EXPY | Termination of patent right or utility model |