CN201066532Y - Measuring device with remote meter reading function - Google Patents
Measuring device with remote meter reading function Download PDFInfo
- Publication number
- CN201066532Y CN201066532Y CNU2007201208214U CN200720120821U CN201066532Y CN 201066532 Y CN201066532 Y CN 201066532Y CN U2007201208214 U CNU2007201208214 U CN U2007201208214U CN 200720120821 U CN200720120821 U CN 200720120821U CN 201066532 Y CN201066532 Y CN 201066532Y
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- China
- Prior art keywords
- remote meter
- reading function
- measuring apparatus
- communication module
- wireless communication
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Abstract
The utility model relates to a metering device with remote meter reading function. The utility model comprises a metering chip used for collecting data, a microcontroller used for receiving and processing the data and a wireless communication module. The wireless communication module transmits the data processed by the microcontroller to a meter reading center. The metering device with remote meter reading function of the utility model transmits data with the wireless module, which is of reliability, accuracy, low working cost and no wiring. The function of remote meter reading in true sense is realized. The maintenance cost is low and the real-time performance of data copy is good.
Description
[technical field]
The utility model relates to a kind of measuring apparatus with remote meter-reading function, particularly relates to a kind of can the realization on a large scale and the high measuring apparatus with remote meter-reading function of efficient.
[background technology]
Along with the raising of people's living standard, various auxiliary facilities are also correspondingly various.Along with and what come is exactly will be in the face of various gauging tables data collection problems on a large scale, as ammeter, water meter, gauging table commonly used in gas meter or the like life, these gauging tables are distributed in certain scope, need check meter to it, have just had very big difficulty.
With the most common ammeter, development along with electronics technology, dwelling house has generally adopted the remote meter reading technical scheme, avoided checking meter to the doorstep, greatly economization manpower, improved the security of user sub-district, also enter an item of expenditure in the accounts rapidly, from the real-time more data information of obtaining of user, as electric energy requirement, timesharing electric weight and load curve etc. for power supply department, can in time dispatch and manage, practicable technological means is provided.
At present, the scheme that generally adopts of long-distance meter-reading system is " collector+concentrator+central management system software of checking meter " technical scheme.Collector sends data by means such as low pressure carrier wave, RS485 interface or short-distance wireless sending modules to concentrator, concentrator sends data by telephone network, GSM net (Global System for MobileCommunications, global system for mobile communications) or other dedicated lines to the center of checking meter.This long-distance meter-reading system exists shortcomings such as cost height, reliability are low, complex structure, troublesome maintenance.
Other method all exists various defectives, is difficult to realize large-scale popularizing.
[utility model content]
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of can realize extensive and the high measuring apparatus with remote meter-reading function of efficient.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of measuring apparatus with remote meter-reading function is provided, it comprises the computation chip that is used for image data, accept the also microcontroller and the wireless communication module of deal with data, the data transmission that wireless communication module is handled microcontroller is given the center of checking meter.
The scheme that the utility model solves further technical matters is: this wireless communication module is GSM, GPRS, CDMA, 3G communication module, this wireless communication module and to check meter between the center be to carry out bidirectional data transfers by SMS/GPRS.
The scheme that the utility model solves further technical matters is: this wireless communication module is the GSM communication module.
The scheme that the utility model solves further technical matters is: this remote meter reading device further comprises I
2The C serial storage writes down the information of microprocessor.
The scheme that the utility model solves further technical matters is: this I
2The C serial storage is the iron storer.
The scheme that the utility model solves further technical matters is: this microcontroller links to each other with computation chip by the I/O mouth.
The scheme that the utility model solves further technical matters is: this microcontroller is connected with wireless communication module by serial port.
The scheme that the utility model solves further technical matters is: this computation chip and microcontroller are integrated in one.
The scheme that the utility model solves further technical matters is: this wireless communication module and computation chip and microcontroller are integrated in one.
Compared to prior art, the beneficial effects of the utility model are: the measuring apparatus with remote meter-reading function of the present utility model transmits data with wireless module, reliably, accurately, cost of use is low, need not wiring, realized remote wireless meter recording function truly, maintenance cost is low, and the data real-time of making a copy for is good.
[description of drawings]
Fig. 1 is the work synoptic diagram with measuring apparatus of remote meter-reading function of the present utility model.
Fig. 2 is the structure principle chart with measuring apparatus of remote meter-reading function of the present utility model.
Fig. 3 is the circuit structure block diagram that the measuring apparatus with remote meter-reading function of the present utility model is used for ammeter.
Fig. 4 is the circuit theory diagrams that the measuring apparatus with remote meter-reading function of the present utility model is used for ammeter.
[embodiment]
Below in conjunction with drawings and Examples the measuring apparatus with remote meter-reading function of the present utility model is described further.
See also Fig. 1 and Fig. 2, this measuring apparatus with remote meter-reading function can form certain scale with the information transmission of gathering to the center of checking meter.This measuring apparatus with remote meter-reading function comprises computation chip, microprocessor and wireless communication module.This computation chip is used to gather required data and is transferred to microprocessor, and microprocessor transfers out by wireless communication module after with data processing.
Seeing also Fig. 3 and Fig. 4, is the course of work and the implementation that example illustrates the measuring apparatus that this has remote meter-reading function with the ammeter among this embodiment.
This measuring apparatus with remote meter-reading function comprises the computation chip 11 of special-purpose electric energy, GSM communicating circuit 12, MCU microcontroller 13 and metering display circuit 14, power circuit, I
2C serial storage (FRAM, iron storer) 15.Described metering display circuit 14 and GSM remote wireless meter recording are in one; MCU microcontroller 13 is by its I/O mouth and computation chip 11, I
2C serial storage 15, metering display circuit; Be connected with GSM communicating circuit 12 by its serial port.This samples to electric current and voltage signal respectively by shunt, bleeder circuit after having the measuring apparatus line attachment of remote meter-reading function; The signal of current channel and voltage channel is after amplifying, analog to digital converter by computation chip inside is converted to two ways of digital signals, then after the processing of circuit such as multiplication, low-pass filtering, numerical frequency conversion, computation chip is exported the pulse that is directly proportional with instantaneous power, and MCU microcontroller 13 is delivered in this pulse.MCU microcontroller 13, and is converted into electric weight with umber of pulse and delivers to the metering display circuit according to setting different periods accumulative total umber of pulses by interrupt mode, is kept in the ferroelectric memory during simultaneously with fructufy.Send instruction when power department is provided with at the center of checking meter, receive information command, carry out data processing, utilize the GSM communicating circuit that meter reading data is wirelessly transmitted to the power department center of checking meter then through the MCU microprocessor by gsm communication public network watt-hour meter.This GSM communicating circuit 12 and to check meter between the center be to carry out bidirectional transfer of information by SMS (Short Messaging Service).
This computation chip 11, microcontroller 13 and GSM communicating circuit 12 can be integrated in one
Power circuit is in order to improve the antijamming capability of system, and reliability is divided into three independently power supplys: the power supply of electric quantity metering part, and the power supply of MCU and interlock circuit, the power supply of GSM communicating circuit makes three's power supply isolate mutually, is independent of each other.
The shunt that current detecting is used adopts manganin, and resistance is 300 μ Ω, and input end has designed anti alias filter, the high fdrequency component of elimination current channel.Voltage detecting is used the resistor network dividing potential drop, guarantee that voltage signal is in the input range of voltage channel, consider the situation of the sum of errors actual environment of component parameters simultaneously, in resistance pressure-dividing network, design a resistance again and adjusted network, can in certain scope, adjust the frequency of pulse of the big or small verification electric quantity metering chip output of voltage signal, adjust the precision of ammeter.The electric quantity metering chip has obtained the electric current and the voltage of user power utilization, calculates the instant electric weight that the user uses, and exports to MCU with the likeness in form of pulse, because metering section is direct and the city electrically contacts, so computation chip and MCU interface adopt photoelectricity to isolate.The MCU interrupt pin reads electric pulse; MCU calculates electric weight in real time by the electric weight computational algorithm and the charge value backup is saved in the ferroelectric memory; the electric quantity metering algorithm comprises the recovery that powers on to charge value; accumulation to electric pulse; to the accumulation of the integral part of charge value and the accumulation of fraction part, under the power-down conditions to the protection of charge value.MCU and gsm module pass through serial communication, MCU can receive the operational order from the note form of gsm module, as the order of checking meter, secure password order, power consumption querying command etc., various command and reply data all are by the form of note and user and the center swap data of checking meter, and can pass through the gsm module acquisition time in real time simultaneously.The display circuit of ammeter adopts LED charactron or LCD to show, the total electric weight of explicit user, user profile such as this power consumption.
Power circuit is typical linear voltage-stabilized power supply circuit, T1 is the step-down transformer that can independently export two-way, the first via is to adopt the half-wave rectification of a diode D2, PC1--PC4 energy storage filter capacitor, U5 is power supply voltage stabilizing IC, output 5V power supply, U1 provides power supply for the electric quantity metering chip, and by magnetic bead with its ground be divided into digitally with simulation ground be connected respectively to electric quantity metering chip U1 digitally with the simulation ground.The second road power supply adopts four diode full-wave rectifications of D3--D6, because the electric current that this road provides is very big, so commutation diode all and connect the conduction angle that four electric capacity of PC5--PC8 increase diode, U7 is low pressure difference regulated power supply IC, the output voltage that resistance PR1 and PR2 adjust U7 is 4.2V, JP1 provides power supply for the GSM communicating circuit, simultaneously also provides power supply through 3.3V voltage stabilizing IC U9 for MCU U4 and storer U8.Other electric capacity of this part all are the energy storage filter capacitors.
U4 is the MCU of this utility model, and its 7th, 8,10,11 pin are and the serial ports that hardware flow control is arranged of communication of GSM communicating circuit and exchanges data, and 7 pin are CTS, and 8 pin are RTS, and 10 pin are RXD, and 11 pin are TXD.Electric pulse from U1 electric quantity metering chip has the 12nd pin to detect, and the 12nd pin is the external hardware interrupt request input pin of MCU, and U1 whenever provides a pulse, and MCU just produces an interruption, the accumulative total pulse number.The 5th, 6 pin of MCU, the I2C interface that is to use software simulation to come out, with ferroelectric memory U8 interface, IR1, IR2 are the pull-up resistors of I2C bus.The 9th pin is the reset pin of MCU, the RC electrify restoration circuit that reset circuit is made up of C3 and R2.18th, 19 pin are quartz oscillator Y1 interfaces, and frequency is 11.0592MHz.The J8 interface is the program burn writing interface that designs for software upgrading.Other pin is to reserve for HardwareUpgring.
U8 is a ferroelectric memory, preserves the information such as constant of user profile, power information, electric weight calculating use, and 1 pin is the sky pin, and 2,3 pin are that chip address is selected, and 4 pin are ground, the 5, the 6th, and I
2C serial bus interface pin, the 5th, serial address/data pin, the 6th, serial clock pin, the 7th, write-protect pin, whole memory block write-protect when connecing high level, 8 pin power supplys.
The electric quantity metering circuit is made up of ic for energy metering, current detection circuit and voltage detecting circuit.Its core is a U1 electric quantity metering chip, and its 1st and the 4th pin is respectively digital power and analog power, has used R5, AC2 capacitance-resistance decoupling circuit to handle from the digital power to the analog power.11,21 pins are respectively simulation ground and digitally, be separately connected to power supply digitally with simulation ground.5,6 pins of U1 are current detecting input channels.Current detection circuit is the copper-manganese divertor of a 300u Ω of serial connection in the live wire of civil power, get the magnitude of voltage at shunt two ends, handle through entering the current detecting passage behind the high-frequency harmonic in the low pass filter filters out current channel of AR1, AC6 and AR10, AC7 composition.7,8 pins of U1 are voltage detecting input channels.Voltage detecting circuit is the resistor network to the sampling of line voltage dividing potential drop, AC5 wherein, AR12, high-frequency harmonic in the AR13 filtering circuit filtering voltage channel, S1-S8 is a wire jumper, can fall corresponding resistance by short circuit, the frequency of the pulse of the big or small verification electric quantity metering chip output of the voltage signal of adjustment voltage channel input in certain scope, the precision of adjustment ammeter.13,14 pins of U1 are the numeral/frequency transform coefficients that are used for selecting U1, and 15,16 pins are the gains that are used for selecting current channel, determine the range that detects.The level of 12 pins determines the highest frequency of the pulse of 22 pins output.17,18 pins are quartz oscillator Y2 interfaces, and frequency is 3.579545MHz.MCU is exported in the pulse of 22 pins of U1 output, because metering section directly electrically contacts with two-part power supply independently with the city, in order to obtain best antijamming capability, adopts the photoelectricity isolation, and U2, U3 are photoelectrical couplers, AR
2It is current-limiting resistance.23,24 pins of U1 are low frequency logic output pins, and its output frequency has reflected the size of average active power, directly drive the electromechanical register and show the electric weight that uses.
KTCOM100GSM module J P1 is by serial ports and MCU communication, and gsm module JP1 provides complete SIM card interface, and U6 is the SIM card circuit.D1 LED is the GSM network signal situation indication of gsm module, and R4 is a current-limiting resistance.
The design requires to keep user power utilization electric weight and other user profile in real time, so use non-volatile FRAM storer, generally is to use E
2PROM and flash, but they can be subjected to the restriction of access times, generally are at 1,000,000 times, if per second writes once, do not write 1 year storer and just write bad.Generally be to use software to judge that whether storage unit is write badly, writes bad and just changes the address.Do like this and also occur the user profile mistake easily.Though FRAM also has the access times restriction, its access times are 10,000,000,000 times, needn't worry to write bad FRAM.
The communicating circuit of the measuring apparatus with remote meter-reading function of the present utility model is except can using the GSM network, can also adopt other network, as GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access), 3G (abbreviation of 3rd Generation refers to the 3G (Third Generation) Moblie technology) etc.
Advantage with metering device of remote meter-reading function of the present utility model:
1. this long-range metering device with remote meter-reading function is a kind of based on GSM/GPRS/CDMA etc. Wireless telecommunications realize remote meter reading and control and with the center swap data of checking meter, need not collector, concentrator, The realization remote automatic meter reading is simple in structure, and cost is low, need not field wiring.
2. this metering device with remote meter-reading function carries wireless communication function, and the data real-time of making a copy for is good.
3. this has the metering device accurate measurement of remote meter-reading function, no add up error.
4. utilize the GSM/GPRS/CDMA net to transmit data with the SMS/MMS form, reliable, accurately, make Low with expense.
5. need not wiring, realized remote wireless meter recording function truly, maintenance cost is low.
Claims (9)
1. measuring apparatus with remote meter-reading function, it is characterized in that: it comprises the computation chip that is used for image data, receive the also microcontroller and the wireless communication module of deal with data, the data transmission that wireless communication module is handled microcontroller is given the center of checking meter.
2. the measuring apparatus with remote meter-reading function according to claim 1, it is characterized in that: this wireless communication module is GSM, GPRS, CDMA, 3G communication module, this wireless communication module and to check meter between the center be to carry out bidirectional data transfers by SMS/GPRS.
3. the measuring apparatus with remote meter-reading function according to claim 2 is characterized in that: this wireless communication module is the GSM communication module.
4. the measuring apparatus with remote meter-reading function according to claim 1 is characterized in that: this measuring apparatus with remote meter-reading function further comprises I
2The C serial storage writes down the information of microprocessor.
5. the measuring apparatus with remote meter-reading function according to claim 4 is characterized in that: this I
2The C serial storage is the iron storer.
6. the measuring apparatus with remote meter-reading function according to claim 1 is characterized in that: this microcontroller links to each other with computation chip by the I/O mouth.
7. the measuring apparatus with remote meter-reading function according to claim 1 is characterized in that: this microcontroller is connected with wireless communication module by serial port.
8. the measuring apparatus with remote meter-reading function according to claim 1 is characterized in that: this computation chip and microcontroller are integrated in one.
9. the measuring apparatus with remote meter-reading function according to claim 8 is characterized in that: this wireless communication module and computation chip and microcontroller are integrated in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201208214U CN201066532Y (en) | 2007-06-09 | 2007-06-09 | Measuring device with remote meter reading function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201208214U CN201066532Y (en) | 2007-06-09 | 2007-06-09 | Measuring device with remote meter reading function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201066532Y true CN201066532Y (en) | 2008-05-28 |
Family
ID=39483713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201208214U Expired - Fee Related CN201066532Y (en) | 2007-06-09 | 2007-06-09 | Measuring device with remote meter reading function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201066532Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065451A (en) * | 2012-12-27 | 2013-04-24 | 广州南方电力集团科技发展有限公司 | Mobile self-service meter-reading device |
| CN105702005A (en) * | 2016-01-28 | 2016-06-22 | 深圳市中兴物联科技股份有限公司 | Remote meter reading system and method |
| CN106162583A (en) * | 2016-09-07 | 2016-11-23 | 深圳市中兴物联科技股份有限公司 | A kind of kilowatt meter reading-out system and processing method thereof |
-
2007
- 2007-06-09 CN CNU2007201208214U patent/CN201066532Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065451A (en) * | 2012-12-27 | 2013-04-24 | 广州南方电力集团科技发展有限公司 | Mobile self-service meter-reading device |
| CN105702005A (en) * | 2016-01-28 | 2016-06-22 | 深圳市中兴物联科技股份有限公司 | Remote meter reading system and method |
| CN105702005B (en) * | 2016-01-28 | 2020-09-29 | 高新兴物联科技有限公司 | Remote meter reading system and method |
| CN106162583A (en) * | 2016-09-07 | 2016-11-23 | 深圳市中兴物联科技股份有限公司 | A kind of kilowatt meter reading-out system and processing method thereof |
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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: 20080528 |