CN201518045U - RS485 smart meter - Google Patents
RS485 smart meter Download PDFInfo
- Publication number
- CN201518045U CN201518045U CN2009202395096U CN200920239509U CN201518045U CN 201518045 U CN201518045 U CN 201518045U CN 2009202395096 U CN2009202395096 U CN 2009202395096U CN 200920239509 U CN200920239509 U CN 200920239509U CN 201518045 U CN201518045 U CN 201518045U
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- electric quantity
- quantity acquisition
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Abstract
The utility model relates to an RS485 smart meter belonging to a short-range/long-range centralized meter reading matching device. The RS485 smart meter comprises a shell, an electric quantity acquisition module and a processing unit, wherein the electric quantity acquisition module and the processing unit are arranged inside the shell, a power jack is formed on the shell and connected with the power supply unit of the processing unit, the processing unit is connected with the output terminal of the power supply unit, the input terminal of the electric quantity acquisition module is connected with the power jack, and the output terminal of the electric quantity acquisition module is connected with the input terminal of the processing unit. The RS485 smart meter is characterized in that the processing unit comprises a single-chip microcomputer, a magnetic latching relay, a bi-directional driving circuit and a watchdog, wherein the bi-directional driving circuit and the watchdog are connected with the single-chip microcomputer, the output terminal of the bi-directional driving circuit is connected with the magnetic latching relay, the communication port of the single-chip microcomputer is connected with an RS485 interface, and the RS485 interface is connected and arranged at the connecting terminal on the shell. The utility model has the advantages of compact structure, stable and reliable performance and fast transmission.
Description
Technical field
The utility model provides a kind of RS485 intelligent electric meter, is the user's set of short range/remote auto meter reading system, and metering user electricity consumption data are carried out communication with terminal.
Background technology
Along with improving constantly of expanding economy and living standards of the people, family's instrument appears in people's the life in large quantities.Make a copy of and the fee collection of these instrument also is a townie big problem, and the workload of manual metering is huge, and inefficiency is not only made troubles to the user, and can exist leakage to copy, copy, estimate by mistake the phenomenon of copying.
Along with the continuous development of electronic technology, computer technology and the communication technology, the automated process of industry-by-industry is accelerated gradually, to such an extent as in automatic data logging real time of data acquisition, reliability, quantity of information are had higher requirement.Present kilowatt meter reading-out system mainly contains: wired kilowatt meter reading-out system, palm kilowatt meter reading-out system and wireless kilowatt meter reading-out system.Wherein wired kilowatt meter reading-out system has increased the expense and the difficulty of comprehensive wiring, has reduced the application flexibility of system, has limited the promotion and application of wired kilowatt meter reading-out system.The palm kilowatt meter reading-out system department that need check meter copies with the palm meter-copy device and fetches data, and has therefore reduced automaticity.Wireless kilowatt meter reading-out system adopts wireless transmitting-receiving equipments transmission data, does not need special stringing, and system architecture is simple, but cost is higher.
Known existing RS485 ammeter complex structure, performance is unreliable, transfer rate is slow, transmit inaccurate, the program instability.
The utility model content
According to above deficiency of the prior art, problem to be solved in the utility model is: a kind of compact conformation is provided, and stable and reliable for performance, transmit fast RS485 intelligent electric meter.
The technical scheme that its technical matters that solves the utility model adopts is: the RS485 intelligent electric meter, comprise housing, electric quantity acquisition module and processing unit, electric quantity acquisition module and processing unit are arranged on enclosure interior, housing is provided with power supply and connects the hole, power supply connects the power supply unit of connection processing unit, hole, processing unit connects the output terminal of power supply unit, the input end of electric quantity acquisition module connects power supply and connects the hole, the input end of the output terminal connection processing unit of electric quantity acquisition module, it is characterized in that processing unit comprises single-chip microcomputer, magnetic latching relay, drive circuit in bi-directional and house dog, drive circuit in bi-directional is connected single-chip microcomputer respectively with house dog, the output terminal of drive circuit in bi-directional connects magnetic latching relay, the communication terminal of single-chip microcomputer connects the RS485 interface, and the RS485 interface connects the terminals that are arranged on the housing.
Power supply unit carries out supplying with the complete machine use after the rectifying and wave-filtering voltage stabilizing to alternating current.The communication terminal of processing unit connects the intelligent terminal of checking meter by the RS485 interface.Electric quantity acquisition module is gathered user's power consumption, is transported to processing unit then and handles, and the power consumption data-signal after the processing is transported to the intelligent terminal of checking meter by the RS485 interface, copies fully.
As prioritization scheme, between two output terminals of described RS485 interface Transient Voltage Suppressor is set.Improve the stability of data-signal.
As prioritization scheme, described electric quantity acquisition module is provided with meter degree display, pulse pilot lamp and calibration terminal, and meter degree display is connected the data terminal of electric quantity acquisition module with the pulse pilot lamp, and the calibration terminal connects the pulse output end of electric quantity acquisition module.Meter degree display is used for the power consumption of explicit user, and the pulse pilot lamp can show the state of electricity consumption meter degree, and the calibration terminal is provided with the terminals that connect housing, is used for calibration.
As prioritization scheme, described outside is provided with 6 terminals, and wherein 1,2 pins connect the calibration terminal of enclosure interior, and 5,6 pins connect the RS485 interface.3,4 pins also can be set to standby terminals as required, perhaps ornamental terminals.
As prioritization scheme, level translator and photoelectricity are set between described RS485 interface and the microcontroller communication end isolate.Prevent to disturb.
As prioritization scheme, described RS485 chip adopts BC184.
As prioritization scheme, described processing unit adopts single chip computer AT 89C2051, house dog is adopted the Programmable Logic Controller X5045 of collection watchdog function, voltage monitoring and serial EEPROM, and magnetic latching relay is provided with drive circuit in bi-directional, and the drive circuit in bi-directional chip adopts BH3023.
Single-chip microcomputer is the ordinary skill connection with the setting of house dog, crystal oscillator with being connected in the utility model, and industry technician can grasp.
The beneficial effect that the utility model RS485 intelligent electric meter is had is: this RS485 intelligent electric meter metering section adopts acquisition module, the corresponding electronics with mainboard of module lead-in wire connects, reduced the space, saved cost, with the intelligent terminal communication of checking meter, can realize that electric weight is concentrated to copy and get, dependable performance, transmission is fast, and transmission is accurately, program is stable, and appearance looks elegant is easily installed.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model,
Fig. 2 is a structural representation of the present utility model,
Wherein: 1, housing 2, terminals 3, power supply connect the hole.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
As shown in Figure 1, electric quantity acquisition module and processing unit are arranged on enclosure interior, housing is provided with power supply and connects the hole, power supply connects the power supply unit of connection processing unit, hole, processing unit connects the output terminal of power supply unit, the input end of electric quantity acquisition module connects power supply and connects the hole, the input end of the output terminal connection processing unit of electric quantity acquisition module.Processing unit comprises single-chip microcomputer, magnetic latching relay, drive circuit in bi-directional and house dog, drive circuit in bi-directional is connected single-chip microcomputer respectively with house dog, the output terminal of drive circuit in bi-directional connects magnetic latching relay, the communication terminal of single-chip microcomputer connects the RS485 interface, and the RS485 interface connects the terminals that are arranged on the housing.Level translator and photoelectricity are set between RS485 interface and the microcontroller communication end isolate, between two output terminals of RS485 interface Transient Voltage Suppressor is set, prevent to disturb.The output terminal of single-chip microcomputer also is provided with power light, is used for display working condition.
Electric quantity acquisition module is provided with meter degree display, pulse pilot lamp and calibration terminal, and meter degree display is connected the data terminal of electric quantity acquisition module with the pulse pilot lamp, and the calibration terminal connects the pulse output end of electric quantity acquisition module.
Power supply in the utility model, single-chip microcomputer, crystal oscillator, house dog be provided with and between connection, be ordinary skill and connect, industry technician can grasp.
Single-chip microcomputer adopts the AT89C2051 of atmel corp, and it is a low-voltage, 8 single-chip microcomputers of high-performance CMOS, sheet include 2k bytes can be erasable repeatedly read-only Flash program storage and the Random Access Data storer (RAM) of 128bytes.Be burnt among the AT89C2051 after three grades of encryptions of Single Chip Microcomputer (SCM) program.Crystal oscillator is 11.059MHZ, and chip X5045 is a kind of Programmable Logic Controller that integrates house dog, voltage monitoring and three kinds of functions of serial EEPROM.Effective settlement procedure wild effect.Linear photoconductor coupling chip adopts NEC2501, effectively prevents to disturb.The drive circuit in bi-directional chip of magnetic latching relay adopts BH3023.Level transferring chip adopts BC184, and this scheme working voltage transient suppressor TVS pipe can effectively play overvoltage protection.The acquisition module computation chip adopts high precision, the ADE7755 of SMT technology.
As shown in Figure 2, housing 1 is provided with power supply and connects hole 3 and terminals 2.Housing 1 inside is provided with electric quantity acquisition module, single-chip microcomputer, house dog, crystal oscillator, power supply and interface circuit.Outside is provided with 6 terminals, and wherein 1,2 pins connect the calibration terminal of enclosure interior, and 5,6 pins connect the RS485 interface.3,4 pins also can be set to standby terminals as required, perhaps ornamental terminals.
Principle of work and process:
Power supply unit carries out supplying with the complete machine use after the rectifying and wave-filtering voltage stabilizing to alternating current, and power light is used for the display power supply state.The communication terminal of processing unit connects the intelligent terminal of checking meter by the RS485 interface.Electric quantity acquisition module is gathered user's power consumption, the power consumption of meter degree display explicit user, the pulse pilot lamp is used to show the duty of electric quantity acquisition module, being transported to processing unit then handles, after power consumption data-signal after the processing is isolated by photoelectricity, be transported to the intelligent terminal of checking meter by level translator RS485 interface again, copy fully.
Claims (4)
1.RS485 intelligent electric meter, comprise housing, electric quantity acquisition module and processing unit, electric quantity acquisition module and processing unit are arranged on enclosure interior, housing is provided with power supply and connects the hole, power supply connects the power supply unit of connection processing unit, hole, processing unit connects the output terminal of power supply unit, the input end of electric quantity acquisition module connects power supply and connects the hole, the input end of the output terminal connection processing unit of electric quantity acquisition module, it is characterized in that: processing unit comprises single-chip microcomputer, magnetic latching relay, drive circuit in bi-directional and house dog, drive circuit in bi-directional is connected single-chip microcomputer respectively with house dog, the output terminal of drive circuit in bi-directional connects magnetic latching relay, the communication terminal of single-chip microcomputer connects the RS485 interface, and the RS485 interface connects the terminals that are arranged on the housing.
2. RS485 intelligent electric meter according to claim 1, it is characterized in that: described electric quantity acquisition module is provided with meter degree display, pulse pilot lamp and calibration terminal, meter degree display is connected the data terminal of electric quantity acquisition module with the pulse pilot lamp, the calibration terminal connects the pulse output end of electric quantity acquisition module.
3. RS485 intelligent electric meter according to claim 1 is characterized in that: described outside is provided with 6 terminals, and wherein 1,2 pins connect the calibration terminal of enclosure interior, and 5,6 pins connect the RS485 interface.
4. RS485 intelligent electric meter according to claim 1 is characterized in that: between two output terminals of described RS485 interface Transient Voltage Suppressor is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202395096U CN201518045U (en) | 2009-09-29 | 2009-09-29 | RS485 smart meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202395096U CN201518045U (en) | 2009-09-29 | 2009-09-29 | RS485 smart meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201518045U true CN201518045U (en) | 2010-06-30 |
Family
ID=42498768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202395096U Expired - Fee Related CN201518045U (en) | 2009-09-29 | 2009-09-29 | RS485 smart meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201518045U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074075A (en) * | 2010-12-22 | 2011-05-25 | 哈尔滨电工仪表研究所 | Single-phase local prepayment intelligent electric energy meter |
| CN104809863A (en) * | 2015-03-30 | 2015-07-29 | 广东美的暖通设备有限公司 | RS485 based pulse ammeter communication conversion device and method |
| CN105891565A (en) * | 2016-04-01 | 2016-08-24 | 广东美的暖通设备有限公司 | Power acquisition device and power acquisition system |
-
2009
- 2009-09-29 CN CN2009202395096U patent/CN201518045U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074075A (en) * | 2010-12-22 | 2011-05-25 | 哈尔滨电工仪表研究所 | Single-phase local prepayment intelligent electric energy meter |
| CN104809863A (en) * | 2015-03-30 | 2015-07-29 | 广东美的暖通设备有限公司 | RS485 based pulse ammeter communication conversion device and method |
| CN105891565A (en) * | 2016-04-01 | 2016-08-24 | 广东美的暖通设备有限公司 | Power acquisition device and power acquisition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20130929 |