CN203480263U - Intelligent energy efficiency terminal - Google Patents
Intelligent energy efficiency terminal Download PDFInfo
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- CN203480263U CN203480263U CN201320605558.3U CN201320605558U CN203480263U CN 203480263 U CN203480263 U CN 203480263U CN 201320605558 U CN201320605558 U CN 201320605558U CN 203480263 U CN203480263 U CN 203480263U
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Abstract
The utility model discloses an intelligent energy efficiency terminal. The intelligent energy efficiency terminal comprises a main control unit, a clock circuit unit for providing clock signals for the main control unit, a data acquisition unit for receiving electrical energy parameters and transmitting the parameters to the main control unit, a positioning time service unit, an on-board storage unit for storing information data, and a power supply management unit for converting an external alternating current to a direct current power supply needed by each unit; the positioning time service unit receives satellite messages from the Beidou satellite and a global positioning system and transmits the messages to the main control unit so that positioning and time service can be achieved; and the energy efficiency terminal also comprises other function modules which can achieve various expansion functions such as remote transmission of wireless data, touch input, buzz alarm, state prompt, remote system upgrading etc. The intelligent energy efficiency terminal can read and transmit the electrical energy parameters comprehensively, timely, conveniently and safely, improve the acquisition efficiency of electrical energy, and reduce the manual meter reading cost.
Description
Technical field
The utility model relates to a kind of efficiency harvester of electrotechnical instrument and meter industry, particularly about a kind of intelligent efficiency terminal of using with electric energy transmitting parameter that reads.
Background technology
Continuous propelling along with China's energy-saving and emission-reduction work, the energy collection of effective information and the analytical work of Energy-saving Data are had higher requirement, need various electric flux parameters such as phase/line voltage/current, power factor, fundamental power, harmonic power of Real-time Collection scene, for carrying out comprehensive and accurate Energy Efficiency Analysis, provide strong Data support.These electric flux parameters are gathered by multifunctional electric energy meter, handheld unit or other data acquisition for electric energy equipment conventionally, then by efficiency terminal, are read and are transmitted.At present, existing efficiency terminal, because lower, the function singleness of configuration, extended capability are poor, can not meet current new work requirements.For example, the main control unit model of employing is older, and Resources on Chip is limited, and data-handling capacity is poor; Data transfer mode is single, can not be for industrial site or the commercial location of some difficult wiring; Rely on GPS Global Positioning System (GPS) and position and time service, under one's control, there is hidden danger in secure context; Man-machine interaction mode is single, lacks friendly user interactions mode; And lack the problems such as extendible firmware interface.
Summary of the invention
For the problems referred to above, the utility model provides a kind of function more comprehensively to read the intelligent efficiency terminal of using with electric energy transmitting parameter.
The intelligent efficiency terminal that the utility model provides, is characterized in that, comprising:
Main control unit, for controlling and dispatch each cell operation;
Clock circuit unit, it is electrically connected to described main control unit, for external timing signal being provided to described main control unit;
Data acquisition unit, it is electrically connected to described main control unit, and the electric energy data gathering for receiving data acquisition for electric energy equipment, is passed to described main control unit;
Time service unit, location, it is electrically connected to described main control unit, for receiving and decomposing HA Global Positioning Satellite message, is passed to described main control unit, so that efficiency terminal is accurately located and time service;
Storage unit on plate, it is electrically connected to described main control unit, the information data transmitting for storing described main control unit;
Power Management Unit, it is electrically connected to each unit, is used to each unit that required direct supply is provided.
Further, above-mentioned intelligent efficiency terminal can also comprise:
Wireless data transceiving unit, it is electrically connected to described main control unit, for the information data that described main control unit is transmitted, sends to remote server;
Mobile storage unit, it is electrically connected to described main control unit, the information data transmitting for storing described main control unit.
Above-mentioned wireless data transceiving unit comprises GSM/GPRS wireless transport module and GSM/GPRS dual-mode antenna.
Above-mentioned data acquisition unit comprises:
RS-485 bus interface, it comprises RS-485 transceiver and RS-485 physical interface, the electric energy data gathering for receiving data acquisition for electric energy equipment;
Infrared Transmission module, it comprises infrared-emitting diode and infrared receiving module, for receiving by infrared interconnection technique the electric energy data that data acquisition for electric energy equipment gathers.
Time service unit, above-mentioned location comprises BD2/GPS dual system satellite positioning module and BD2/GPS dual-mode antenna, for receiving and decompose the satellite message of big-dipper satellite and Global Positioning System (GPS), is passed to described main control unit.
Further, above-mentioned intelligent efficiency terminal also comprises:
Circuit supervision unit, it is electrically connected to described main control unit, for monitoring the duty of described main control unit and Power Management Unit, when abnormal conditions or under manual control, provides reset signal to described main control unit.
Further, above-mentioned intelligent efficiency terminal also comprises:
Safety certification unit, it is electrically connected to described main control unit, for internal exchange of data is carried out to safety certification, significant data is carried out to safe storage, to be encrypted/decryption processing of critical data.
Further, above-mentioned intelligent efficiency terminal also comprises:
Man-machine interaction unit, it is electrically connected to described main control unit, comprises LCDs, touch-screen and matrix keyboard, for the information data that shows that described main control unit transmits, and carries out human-computer interaction.
Further, above-mentioned intelligent efficiency terminal also comprises:
Hummer, it is electrically connected to described main control unit, for sending prompting or warning information.
Further, above-mentioned intelligent efficiency terminal also comprises USB interface, jtag interface and the serial line interface that is electrically connected to described main control unit.
Compared with prior art, the beneficial effect that the utility model brings is:
1, the preferred main flow of the utility model, processing power is powerful, Resources on Chip is abundant ARM11 core microprocessor are as main control unit, and implant system and the application software of the Linux3.0.1 operating system exploitation based on increasing income, integrated several functions, improves comprehensive treatment capability easily.
2, the preferred RS-485 bus interface of the utility model, and Infrared Transmission module receives electric energy data, data transfer mode is variation, can meet the user demand of different application occasion, the industry and the business electricity consumption place that are particularly useful for some difficult wiring, can also reduce field wiring cost, improve installation effectiveness simultaneously.
3, the preferred BD2/GPS dual system of the utility model satellite positioning module reception BD2 satnav message or gps satellite location message position and time service, BD2 global position system is the Position Fixing Navigation System of domestic big-dipper satellite, and therefore the safety and reliability of work is better.
4, the preferred LCDs of the utility model, touch-screen and matrix keyboard build man-machine interaction unit, and man-machine interaction mode is promoted.
The utility model can read and electric energy transmitting parameter comprehensive, timely, convenient, safely, improves generated energy acquisition efficiency, reduces manual metering cost.Other feature and advantage of the present utility model will be set forth in the following description, and, partly from instructions, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages also can be realized and be obtained by specifically noted structure in instructions, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions,, jointly for explaining the utility model, does not form restriction of the present utility model with embodiment of the present utility model.In the accompanying drawings:
Fig. 1 is the electrical block diagram of the utility model intelligence efficiency terminal;
Fig. 2 is the electrical block diagram of the intelligent efficiency terminal of the utility model one embodiment;
Fig. 3 is the circuit connection diagram of real-time clock module in circuit shown in Fig. 2;
Fig. 4 is the circuit connection diagram of the RS-485 bus interface of data acquisition unit in circuit shown in Fig. 2;
Fig. 5 is the circuit connection diagram of the Infrared Transmission module of data acquisition unit in circuit shown in Fig. 2;
Fig. 6 is the circuit connection diagram of locating time service unit shown in Fig. 2 in circuit;
Fig. 7 is the electrical block diagram of Power Management Unit in circuit shown in Fig. 2;
Fig. 8 is the circuit connection diagram of wireless data transceiving unit in circuit shown in Fig. 2;
Fig. 9 is the circuit connection diagram of mobile storage unit in circuit shown in Fig. 2;
Figure 10 is the circuit connection diagram of circuit supervision unit in circuit shown in Fig. 2;
Figure 11 is the circuit connection diagram of safety certification unit in circuit shown in Fig. 2;
Figure 12 is the circuit connection diagram of man-machine interaction unit in circuit shown in Fig. 2.
Embodiment
As shown in Figure 1, it is the composition structural representation of the efficiency terminal that the utility model proposes, it has comprised storage unit 50 and Power Management Unit 60 on main control unit 10, clock circuit unit 20, data acquisition unit 30, time service unit 40, location, plate, can also comprise further wireless data transceiving unit 70, mobile storage unit 80, circuit supervision unit 90, safety certification unit 100, man-machine interaction unit 110 and hummer 120, and usb 1 30, jtag interface 140 and serial line interface 150 etc.This efficiency terminal can receive, shows and store the electric flux parameter collecting such as data acquisition for electric energy equipment such as electric energy meters in several ways, and reception Global Positioning System (GPS) message information, realize accurately location and time service function, in addition, this efficiency terminal can also be carried out wireless data remote transmission, has wireless Internet access, transmitting-receiving note, touches the multiple expanded functions such as input, buzzing alarm, condition prompting and remote system upgrade.
Below in conjunction with accompanying drawing and specific embodiment, describe embodiment of the present utility model in detail, to the utility model, how application technology means solve technical matters whereby, and the implementation procedure of reaching technique effect can fully understand that also tool is to implement.
As shown in Fig. 2～Figure 12, described main control unit 10 is cores of whole efficiency terminal.In the present embodiment, main control unit 10 preferred process abilities are powerful, provide former abundant ARM11 core microprocessor S3C6410 on sheet, carry out arithmetic sum logical operation, to control and to dispatch each cell operation.
As shown in Figure 2, described clock circuit unit 20 is electrically connected to main control unit 10, mainly Clock management module 21 and real-time clock module 22, consists of, for providing external timing signal and real-time clock signal to main control unit 10.In the present embodiment, Clock management module 21 can provide to ARM11 core microprocessor the external timing signal of 12MHz, 27MHz and 48MHZ.As shown in Figure 3, real-time clock module 22 can adopt RX-8025T chip to form, by I2CSDA0, I2CSCL0 signal wire, connect ARM11 core microprocessor, for providing second, minute, time, week, date, the moon, year etc. information, and there is leap year automatic regulating function.In addition, real-time clock module 22 can also be used the accumulators such as lithium ion battery as standby power supply, when primary power disconnects, still can keep accurate timing.
As shown in Figure 2, described data acquisition unit 30 is electrically connected to main control unit 10, for receiving the electric flux parameter gathering such as data acquisition for electric energy equipment such as electric energy meters, is transferred to main control unit 10.Particularly, this data acquisition unit 30 comprises RS-485 bus interface 31 and Infrared Transmission module 32, wherein:
As shown in Figure 4, described RS-485 bus interface 31 mainly consists of RS-485 transceiver and RS-485 physical interface, as the host node in RS-485 bus network, receives the electric flux parameter that data acquisition for electric energy equipment gathers.In the present embodiment, RS-485 transceiver can adopt the MAX13085 transceiver that Maxim company produces.In addition,, in order to improve antijamming capability, the data channel between MAX13085 transceiver and ARM11 core microprocessor has adopted the photoelectrical coupler that model is PS2501 to isolate.The photoelectrical coupler of PS2501 is connected ARM11 core microprocessor by RXD3, TXD3 with GPE4 equisignal line, and wherein, GPE4 is the receipts/enable signal of making a start of MAX13085 transceiver.
As shown in Figure 5, in the present embodiment, it is the infrared light emitting diode of DS208 and the infrared receiver module composition that model is DS-138T that described Infrared Transmission module 32 can adopt model.DS-138T infrared receiver module connects ARM11 core microprocessor by RXD2 signal wire, and DS208 infrared light emitting diode connects ARM11 core microprocessor by TXD2 signal wire, realizes Infrared Wireless Communication.Wherein, TXD2 signal is issued data acquisition for electric energy equipment after 38KHz carrier signal XPWMTOUT1 modulation.
As shown in Figure 6, time service unit, described location 40 is electrically connected to main control unit 10, mainly by BD2/GPS dual system satellite positioning module 41 and BD2/GPS dual-mode antenna 42, formed, for receiving and decompose the satellite message of big-dipper satellite and Global Positioning System (GPS), be transferred to main control unit 10, to obtain the real-time positional parameter of efficiency terminal, as lat/longitude, travelling speed, traffic direction, angle and BD2/GPS time etc., thereby realize the accurate location of energy terminal and time service function.In the present embodiment, BD2/GPS dual system satellite positioning module 41 can adopt ATGM330B chip to form, because interface resource is limited, ATGM330B chip connects a SPI bridging chip 43 by RX, TX signal wire, and SPI bridging chip 43 connects ARM11 core microprocessor by SPICS1, SPICLK1, SPIMOSI1, SPIMISO1 equisignal line; Meanwhile, ATGM330B chip also directly connects ARM11 core microprocessor by nPWRDN power control line, RST reseting signal line.
As shown in Figure 2, on described plate, storage unit 50 is electrically connected to main control unit 10, for storing the data such as system works information, electric energy data and positional parameter from main control unit 10.In the present embodiment, on plate, storage unit 50 comprises DDR Synchronous Dynamic Random Access Memory 51, NOR FLASH storer 52 and NAND FLASH storer 53.Wherein, NOR FLASH storer 52 connects address bus Addr Bus and the data bus Data Bus of ARM11 core microprocessor by buffer memory.
As shown in Figure 2, described Power Management Unit 60 is electrically connected to each unit of efficiency terminal (all not illustrating in figure), is used to each unit that required direct supply is provided.As shown in Figure 7, in the present embodiment, the external 220V single phase alternating current power supply of Power Management Unit 60,220V single-phase alternating current is passed through to transformer 61 step-downs, through rectifier bridge 62 rectifications, convert to+12V direct current, and then general+12V direct current is by convert to+5V of DC converter 63 direct current, the linear voltage regulator 64 that finally utilizes Multiple Type is converted to respectively the required DC voltage in each unit by+5V direct current, as+3.8V ,+3.3V, 1.8V etc.Meanwhile, Power Management Unit 60 also comprises a battery management module 65, and the accumulator 66 as lithium ion battery is carried out to Charge Management.In addition, Power Management Unit 60 also comprises the output voltage+3.7V of 67 pairs of accumulators 66 of the DC boost converter processing of boosting, and the scope of converting to is 4.8～5.2V DC voltage, to drive the LED-backlit source work of LCDs.
As shown in Figure 8, described wireless data transceiving unit 70 is electrically connected to main control unit 10, mainly by GSM/GPRS wireless transport module 71 and GSM/GPRS dual-mode antenna 72, formed, utilize global system for mobile communications GSM/ general packet radio service technology GPRS to carry out wireless data remote transmission, the information such as the electric energy data that main control unit 10 is transmitted and positional parameter are sent to remote server.In the present embodiment, GSM/GPRS wireless transport module 71 can adopt MG323-B chip to form, and by RXD1, TXD1, RTSn, CTSn, TERM_ON, RESET equisignal line, connects ARM11 core microprocessor.Wherein, RTSn and CTSn signal are for flow control, and TERM_ON is the machine open/close control signal of MG323-B chip, and RESET is reset signal.Except the information such as electric energy data and positional parameter are sent to remote server, efficiency terminal can also realize and getting online without being tethered to a cable and information download by GPRS, realizes the functions such as transmitting-receiving note by GSM.
As shown in Figure 9, described mobile storage unit 80 is electrically connected to main control unit 10, for related datas such as store electricity energy data and positional parameters.In the present embodiment, the preferred MiCro SD storage card in mobile storage unit 80, MiCro SD storage card is connected ARM11 core microprocessor by MMC0_CDN, MMC0_WPN, MMC0_CLK, MMC0_CMD with MMC0_DATA0～MMC0_DATA3 equisignal line.Wherein, whether MMC0_CDN signal has MiCro SD storage card to insert for surveying.MiCro SD storage card+3.3V DC voltage controls by field effect transistor M OSFET, to support the warm connection function of MiCro SD storage card.In addition, MiCro SD storage card also can be for upgrading and the maintenance of operating system mirror image and application software.
As shown in figure 10, described circuit supervision unit 90 is electrically connected to main control unit 10, for monitoring the duty of main control unit 10 and Power Management Unit 60, can be powering on, power down or supply voltage occur abnormal in the situation that providing reset signal to main control unit 10.In addition, circuit supervision unit 90 can also provide WatchDog Timer and reset function manually.In the present embodiment, circuit supervision unit 60 is main adopts the cmos circuit monitoring chip that model is MAX706ATESA to form, and by WDOn, WDI, is connected ARM11 core microprocessor with SYSRST equisignal line.Wherein, WDI is house dog input signal, and SYSRST is systematic reset signal; The SYSRST reseting signal line (not shown) that is connected with the reseting signal line of other each unit, to realize correct control and the rational management of main control unit to each unit.Sort circuit is compared with adopting the circuit of discrete component or simple function chip portfolio, can reduce the complicacy of circuit and the quantity of components and parts, improves the reliability of circuit.
As shown in figure 11, described safety certification unit 100 is electrically connected to main control unit 10, for internal exchange of data is carried out to safety certification, significant data is carried out to safe storage, to be encrypted/decryption processing of critical data, to guarantee security and the integrality of ammeter data in storage and transmitting procedure.In the present embodiment, the main CEPESAM of the employing V108104 of safety certification unit 100 chip forms, and it connects ARM11 core microprocessor by bidirectional data line DAT, clock cable CLK, reseting signal line RESET and power control line PWRCON.
As shown in figure 12, described man-machine interaction unit 110 is electrically connected to main control unit 10, for showing the information such as electric energy meter data and positional parameter, and carries out human-computer interaction.In the present embodiment, man-machine interaction unit 110 comprises LCDs 111, touch-screen 112 and matrix keyboard 113.Wherein, LCDs 111 is connected ARM11 core microprocessor by VDEN, VSYNC, HSYNC, VCLK, NRESET with VD0～VD23 equisignal line; Touch-screen 112 connects ARM11 core microprocessor by TSYM, TSYP, TSXM, TSXP equisignal line.In addition, the LED-backlit power supply (not shown) of LCDs 111 can be driven by a booster converter 114, this booster converter 114 connects ARM11 core microprocessor by SHDN signal wire, so that ARM11 core microprocessor can be closed LED-backlit power supply by SHDN signal wire under some specific condition, reduce system power dissipation.Described matrix keyboard 113(is not shown) what can adopt is the matrix keyboard of 5*5, it is comprised of numerical key, directionkeys, OK key, reset key etc.
As shown in Figure 2, described hummer 120 is electrically connected to main control unit 10, for sending prompting or warning information.
As shown in Figure 2, described usb 1 30 is electrically connected to main control units 10, can be for external apparatus for reading of bar code, and to identify the data acquisition for electric energy equipment such as multifunctional electric energy meter with bar code, handheld unit, single-phase electric energy meter.
As shown in Figure 2, described jtag interface 140 is electrically connected to main control unit 10, can be in exploitation and the software upgrading stage of efficiency terminal, to efficiency terminal programming bootstrap loader and operating system mirror image by this interface.
In addition, described serial line interface 150 is also electrically connected to main control unit 10, is RS-232 interface, for external printing equipment, prints Debugging message.
In above-described embodiment, the various key signals of efficiency terminal, as clock cable, address/data bus, chip selection signal, bus read/write signal etc., all carry out strict isometric control and the impedance matching of 50 Ω, to guarantee that efficiency terminal can steady operation under complex environment comparatively.
Controlling the system software of efficiency terminal works can develop based on Linux3.0.1 embedded OS, and adopts Sqlite3.0 Embedded Database Technology.Linux3.0.1 is the class Unix operating system of a set of free use and Free propagation, be the operating system of a multi-user based on POSIX and UNIX, multitask, support multithreading, there is kinds of platform, complete compatible POSIX1.0 standard, the good features such as user interface supported.System software based on the exploitation of Linux3.0.1 embedded OS can meet many-sided demand of efficiency terminal.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any those skilled in the art are in the disclosed technical scope of the utility model; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (10)
1. an intelligent efficiency terminal, is characterized in that, comprising:
Main control unit, for controlling and dispatch each cell operation;
Clock circuit unit, it is electrically connected to described main control unit, for external timing signal being provided to described main control unit;
Data acquisition unit, it is electrically connected to described main control unit, and the electric energy data gathering for receiving data acquisition for electric energy equipment, is passed to described main control unit;
Time service unit, location, it is electrically connected to described main control unit, for receiving and decomposing HA Global Positioning Satellite message, is passed to described main control unit, so that efficiency terminal is accurately located and time service;
Storage unit on plate, it is electrically connected to described main control unit, the information data transmitting for storing described main control unit;
Power Management Unit, it is electrically connected to each unit, is used to each unit that required direct supply is provided.
2. intelligent efficiency terminal as claimed in claim 1, is characterized in that, also comprises:
Wireless data transceiving unit, it is electrically connected to described main control unit, for the information data that described main control unit is transmitted, sends to remote server;
Mobile storage unit, it is electrically connected to described main control unit, the information data transmitting for storing described main control unit.
3. intelligent efficiency terminal as claimed in claim 2, is characterized in that, described wireless data transceiving unit comprises GSM/GPRS wireless transport module and GSM/GPRS dual-mode antenna.
4. the intelligent efficiency terminal as described in claim 1 or 2 or 3, is characterized in that, described data acquisition unit comprises:
RS-485 bus interface, it comprises RS-485 transceiver and RS-485 physical interface, the electric energy data gathering for receiving data acquisition for electric energy equipment;
Infrared Transmission module, it comprises infrared-emitting diode and infrared receiving module, for receiving by infrared interconnection technique the electric energy data that data acquisition for electric energy equipment gathers.
5. the intelligent efficiency terminal as described in claim 1 or 2 or 3, it is characterized in that, time service unit, described location comprises BD2/GPS dual system satellite positioning module and BD2/GPS dual-mode antenna, for receiving and decompose the satellite message of big-dipper satellite and Global Positioning System (GPS), passed to described main control unit.
6. the intelligent efficiency terminal as described in claim 1 or 2 or 3, is characterized in that, also comprises further:
Circuit supervision unit, it is electrically connected to described main control unit, for monitoring the duty of described main control unit and Power Management Unit, when abnormal conditions or under manual control, provides reset signal to described main control unit.
7. the intelligent efficiency terminal as described in claim 1 or 2 or 3, is characterized in that, also comprises further:
Safety certification unit, it is electrically connected to described main control unit, for internal exchange of data is carried out to safety certification, significant data is carried out to safe storage, to be encrypted/decryption processing of critical data.
8. the intelligent efficiency terminal as described in claim 1 or 2 or 3, is characterized in that, also comprises further:
Man-machine interaction unit, it is electrically connected to described main control unit, comprises LCDs, touch-screen and matrix keyboard, for the information data that shows that described main control unit transmits, and carries out human-computer interaction.
9. the intelligent efficiency terminal as described in claim 1 or 2 or 3, is characterized in that, also comprises further:
Hummer, it is electrically connected to described main control unit, for sending prompting or warning information.
10. the intelligent efficiency terminal as described in claim 1 or 2 or 3, is characterized in that, also comprises further the USB interface, jtag interface and the serial line interface that are electrically connected to described main control unit.
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| CN201320605558.3U CN203480263U (en) | 2013-09-27 | 2013-09-27 | Intelligent energy efficiency terminal |
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| CN201320605558.3U CN203480263U (en) | 2013-09-27 | 2013-09-27 | Intelligent energy efficiency terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345673A (en) * | 2014-11-01 | 2015-02-11 | 李钦源 | Digital type universal measuring and controlling device with communication function |
| CN104767209A (en) * | 2015-02-13 | 2015-07-08 | 杭州水杉科技有限公司 | Intelligent connection reactive compensation control instrument and control method thereof |
| CN106097690A (en) * | 2016-08-15 | 2016-11-09 | 安徽翼迈科技股份有限公司 | A kind of water meter gas meter integrated reading device based on real time operating system |
| CN107357621A (en) * | 2017-07-14 | 2017-11-17 | 成都天奥电子股份有限公司 | A kind of method that long distance wireless software upgrading is carried out to satellite time transfer equipment |
-
2013
- 2013-09-27 CN CN201320605558.3U patent/CN203480263U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345673A (en) * | 2014-11-01 | 2015-02-11 | 李钦源 | Digital type universal measuring and controlling device with communication function |
| CN104767209A (en) * | 2015-02-13 | 2015-07-08 | 杭州水杉科技有限公司 | Intelligent connection reactive compensation control instrument and control method thereof |
| CN106097690A (en) * | 2016-08-15 | 2016-11-09 | 安徽翼迈科技股份有限公司 | A kind of water meter gas meter integrated reading device based on real time operating system |
| CN107357621A (en) * | 2017-07-14 | 2017-11-17 | 成都天奥电子股份有限公司 | A kind of method that long distance wireless software upgrading is carried out to satellite time transfer equipment |
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Granted publication date: 20140312 |