CN202795578U - Prepaid gas meter - Google Patents
Prepaid gas meter Download PDFInfo
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- CN202795578U CN202795578U CN201220437357.2U CN201220437357U CN202795578U CN 202795578 U CN202795578 U CN 202795578U CN 201220437357 U CN201220437357 U CN 201220437357U CN 202795578 U CN202795578 U CN 202795578U
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Abstract
The utility model discloses a prepaid gas meter, which comprises a power detection unit, a gas flow signal processing unit, a valve control unit, a liquid crystal display unit and a wireless module. The wireless module is integrated with a microcontroller and a radio frequency (RF) chip and connected with a transceiving antenna, and transmits a control command and data information with a meter reading master station or an external acquisition terminal through a wireless communication way. The microcontroller on the wireless module is responsible for implementing master control on the power detection unit, the gas flow signal processing unit, a valve control driving unit and the liquid crystal display unit. Therefore, users can avoid the visiting disturbance of meter reading staffs every month and can independently choose the paying amount and the paying time; and gas companies can also realize a prepaid function, a cost-adjusting function, a gradient metering function and a remote valve controlling function, thereby effectively solving the problems that it is difficult to read meter in a home and difficult to charge.
Description
Technical field
The utility model relates to a kind of gas meter, flow meter, particularly a kind of prepayment diaphragm gas meter.
Background technology
The prepayment diaphragm gas meter that generally uses at present is the IC-card prepayment diaphragm gas meter, this table comprises microcontroller, power module, tolerance signal processing unit, valve control driver element and display unit, can automatically finish the functions such as gas flow data acquisition, metering, demonstration, valve control and prompting warning.The user purchases combustion gas and after this table uses, has just obtained the rights of using of the gas quantity of purchasing by IC-card; In the process of user's usefulness gas, the residue tolerance of automatically examining and making cuts of the microcontroller in the IC-card intelligent meter just can be died by valve-closing after the tolerance of purchasing is used up, and the user need purchase gas again can make the IC-card gas meter, flow meter open the valve air feed again.Because this inherent characteristic of IC-card prepayment diaphragm gas meter so that gas company can't in time be readjusted prices according to market situation, brings about great losses when energy prices go up; Gas company can't Real Time Monitoring user family in running status and the operating position of gas meter, flow meter; In the ill-matched situation of user, gas company can't carry out necessary control to the IC-card gas meter, flow meter, and this " difficulty of checking meter of registering one's residence ", " gas expense is taken over difficulty " problem cause very big puzzlement to gas company.
The utility model content
The purpose of this utility model provides a kind of prepayment diaphragm gas meter that can control in real time.
This prepayment diaphragm gas meter provided by the utility model, comprise the power supply detecting unit, the tolerance signal processing unit, valve control unit and liquid crystal display and a wireless module, wireless module comprises microcontroller and RF chip, the RF chip carries out the transmission of control command and data message by communication and check meter main website or outside acquisition terminal, microcontroller is responsible for the power supply detecting unit, the tolerance signal processing unit, valve control driver element and liquid crystal display are implemented overhead control, and carry out data transmission with the RF chip, described power supply detecting unit is the power supply of described wireless module and the microcontroller that power supply power-fail or low power detection signal is sent to described wireless module, described tolerance signal processing unit gas meter, flow meter is supplemented with money or with destiny reportedly to microcontroller, by microcontroller with data-signal and acquisition abnormity status information transmission to the RF chip, reach check meter master station or external unit terminal by communication again, described wireless module is controlled by microcontroller the control signal that receives to described tolerance signal processing unit and valve control unit, and described liquid crystal display is carried out output display control.
The model of described wireless module is WFWL470.
The prepayment diaphragm gas meter that the utility model provides can carry out radio communication with main website, can will check meter the data distributings such as the amount of money that main website issues, unit price, amount lower limit to the utility model by concentrator, palm machine; And the utility model is uploaded to the main website that checks meter by communication with day, month freezing data and meter state data etc., and can carry out the real time data copy reading, thereby realizes the ladder charge.From then on, the user also can avoid meter reading personnel's bothering to the doorstep per month, and the amount and paying the fees the time of can independently selecting to pay the fees, save the trouble of using IC-card to purchase the gas inflation, directly a little purchase institute's air demand from paying the fees, carry out wireless remote transmission to the used gas meter, flow meter inflation of user by gas company, the user can enjoy very easily life like this.Simultaneously, gas company also can be realized pre-charge function, price modification function, gradient function of measuring and remote valve gate control function, thereby efficiently solves the problem of difficult and difficult charge of checking meter of registering one's residence.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of wireless module in the utility model.
Embodiment
As shown in Figure 1, the prepayment diaphragm gas meter that provides of the utility model comprises power supply detecting unit, tolerance signal processing unit, valve control unit, liquid crystal display and wireless module.This wireless module has been integrated microcontroller and RF chip, and is connected with dual-mode antenna.The above-mentioned functions unit all links to each other with microcontroller on this wireless module, and by microcontroller the above-mentioned functions module is implemented overhead control.Described power supply detecting unit comprises dry battery power box primary power testing circuit, and its function is for the power supply of described wireless module and power supply power-fail or low power detection signal is sent to the microcontroller of described wireless module.Described tolerance signal processing unit with gas meter, flow meter inflation or with destiny reportedly to microcontroller, carry out data transmission by microcontroller and RF chip again, then with data message and acquisition abnormity status information wireless remote transmission to master station or the outside acquisition terminal of checking meter; Described wireless module will be controlled described tolerance signal processing unit and valve control unit by microcontroller by the control signal that communication receives, and described liquid crystal display is carried out output display control.
In addition, tolerance signal processing unit of the present utility model has pulse measurement mode and photo-electronic directly reading metering method available.Repeatedly preserve significant data subregion in EEPROM, prevents loss of data and effectively error correction.RF chip on the gas meter, flow meter wireless module is crossed the Surveillance center that collecting device is back to the combustion gas operator with tolerance, amount of money data communication device, and this RF chip also can pass through relevant device receive data and control command in addition, sends microcontroller to.
The interlock circuit of described wireless module as shown in Figure 2.The power pack of described wireless module is after power supply V3P3 passes through capacitor C 3, capacitor C 4 and polar capacitor C15 parallel connection and filtering, generates via the phasmajector V1 with Capacitance parallel connection to obtain again, and 21 pin and 22 pin that access afterwards described wireless module D1 are its power supply.
8 pin of described wireless module D1 and 9 pin read in combustion gas base table pulse collection signal PLUSE0 and PLUSE1, and liquid crystal display is implemented control, make its output display corresponding information.Its 14 pin output direct-reading metering interface control signal VCC_PS_CTRL is to the grid of metal-oxide-semiconductor V7, the drain electrode of metal-oxide-semiconductor V7 connects direct-reading metering units power supply, the source electrode of metal-oxide-semiconductor V7 was connected capacitor C 2 filtered power supply V3P3, realized that thus microcontroller is to the control of direct-reading metering units.7 pin of described wireless module D1 measure interface control signal VCC_PLU_CTRL with pulsed and export the pulse measurement unit to, its 5 pin output valve-off control signal MOTOR_CLOSE_CTRL, and valve control signal MOTOR_OPEN_CTRL is opened in its 1 pin output.Particularly, when using combustion gas and making gas consumption reach the standard metering precision, combustion gas base table pulse collection signal PLUSE0 and PLUSE1 receive an effective tolerance signal successively, and microcontroller is differentiated the validity of tolerance information according to frequency characteristic.Unusual when the collection signal appearance, microcontroller is handled as follows: if monolateral abnormal signal then is judged to be the tongue tube fault, microcontroller shows " fault " information by liquid crystal display, and proceeds the tolerance metering; If bilateral abnormal signal, then be judged to be the magnetic interference fault, microcontroller shows " interference " information by liquid crystal display, simultaneously burnt gas valve is carried out and closed valve control, namely export valve-off control signal MOTOR_CLOSE_CTRL, and record this abnormal information, until after the undesired signal that the detects elimination, just allow burnt gas valve is sent out the valve control command, i.e. valve control signal MOTOR_OPEN_CTRL is opened in output, makes it to continue to use.In addition, when the situation that system regulation occurs, when reaching the situation such as overdraw lower limit, battery power down, the low electricity of battery such as main station system Long-distance Control, advance payment, microcontroller is also carried out and is closed the valve operation.After the problems referred to above solved, by button operation, microcontroller was carried out and is opened the valve operation.
The 10 pin output liquid crystal display driving power control signal LCD_VCC of described wireless module D1, its 16 pin output liquid-crystal data signal LCD_SDA, its 15 pin output liquid crystal clock signal LCD_SCL, its 6 pin reads in push button signalling KEY1.The user can wake LCD up and show by button operation, queries the balance, the real-time unit price of current combustion gas, total gas consumption, but engineering staff's polling routine version number, gas meter, flow meter address.
20 pin of described wireless module D1 read in the valve detection signal MOTO_AD that puts in place, its 19 pin reads in power detection signal VCC_DET, its 18 pin written-out program is downloaded clock signal DC, its 17 pin read-in programme downloading data signal DD, its 13 pin reads in produces push button signalling BAKEUP for subsequent use, its 12 pin sends data-signal TXD by resistance R 31 outputs, ground connection after while resistance R 31 other end series capacitance C10 filtering, its 11 pin reads in reception of data signal RXD by resistance R 30, ground connection after while resistance R 30 other end series capacitance C9 filtering, its 3 pin and 4 pin ground connection, its 2 pin meets power supply V3P3 by resistance R 2, ground connection behind resistance R 2 other end series capacitance C1.
During use, the utility model adopts low-power consumption mode, and setting cycle wakes up, when detecting main website and issue data, the data that issue is kept in the utility model storage unit.By pulse collection mode or direct access mode metering, receive the information such as recharge amount by wireless communication mode, and realize automatically deducting fees according to the real time price parameter.When being less than under the overdraw amount of money, remaining sum prescribes a time limit, valve-closing, and have gas price adjustment strategy.Affect in the gas consumption metering situation when battery power down, low electricity or bilateral tongue tube interference etc. occurring, microcontroller closes the valve operation to valve.
The utility model utilizes that micropower is wireless to realize automatic network-building with concentrator or collector communication, mode that also can be by portable wireless terminal by artificial regularly to the building or unit collection gas meter, flow meter data.The utility model receives the external wireless device signal, and passive the waking up of unique address checked meter, and carries out data transmission according to short-range wireless communication protocol.Checking meter, the data communication devices such as the amount of money that main website issues, unit price, amount lower limit are crossed concentrator, palm machine is issued to the utility model, the utility model is uploaded the information such as day, month freezing data, meter state to checking meter main website, realize the copy reading of real time data, gas company can be realized the ladder charge thus.The data that microcontroller of the present utility model issues according to main website are processed in real time the resident and are used destiny certificate, remaining sum, when abnormality appears in the user's gas metering, this abnormality can be uploaded to main station system for reading meter, at this moment gas company can keep evidence or directly the specific user be carried out pass valve operation by Long-distance Control.
It is the wireless module of WFWL470 that the utility model adopts model, can satisfy the design of each functions of modules and want, and effectively realizes described function.
Claims (2)
1. prepayment diaphragm gas meter, comprise power supply detecting unit, tolerance signal processing unit, valve control unit and liquid crystal display, it is characterized in that, also comprise a wireless module, wireless module links to each other with the power supply detecting unit by its analog to digital conversion ADC pin; This module links to each other with the tolerance signal processing unit with universal input output GPIO pin by its main frame input slave output MISO pin, this module links to each other with valve control unit with main frame output slave input MOSI pin by its pulse-width modulation PWM pin simultaneously, this module selects CSn pin, device type DEV_TYPE pin and network state NET_STATE pin to link to each other with liquid crystal display by its sheet, and described wireless module comprises microcontroller and RF chip.
2. prepayment diaphragm gas meter according to claim 1, it is characterized in that, 21 pin of described wireless module (D1) link to each other with power supply (V3P3) with 22 pin, are connected between described power supply (V3P3) and the ground after phasmajector (V1), the 3rd electric capacity (C3), the 4th electric capacity (C4) and polar capacitor (C15) parallel connection simultaneously; Its 20 pin reads in the valve detection signal (MOTO_AD) that puts in place, its 18 pin written-out program is downloaded clock signal (DC), its 17 pin read-in programme downloading data signal (DD), its 14 pin output direct-reading metering interface control signal (VCC_PS_CTRL) is to the grid of metal-oxide-semiconductor (V7), its drain electrode links to each other with direct-reading metering units power supply (VCC_PS), its source electrode with link to each other via the filtered power supply of the second electric capacity (C2) (V3P3), the first resistance (R1) is connected between its grid and the source electrode, 13 pin of this wireless module read in produces push button signalling for subsequent use (BAKEUP), its 12 pin sends data-signal (TXD) by the 4th resistance (R31) output, the 4th resistance (R31) other end ground connection after the 6th electric capacity (C10) filtering of connecting simultaneously, its 11 pin reads in reception of data signal (RXD) by the 3rd resistance (R30), the 3rd resistance (R30) other end ground connection after the 5th electric capacity (C9) filtering of connecting simultaneously, its 8 pin reads in combustion gas base table the second pulse collection signal (PLUSE1), its 9 pin reads in combustion gas base table the first pulse collection signal (PLUSE0), its 6 pin reads in push button signalling (KEY1), its 3 pin and 4 pin ground connection, its 2 pin connects power supply (V3P3) by the second resistance (R2), the second resistance (R2) other end ground connection behind the first electric capacity (C1) of connecting; 11 pin of described wireless module link to each other with 1 pin of serial ports connector (XS2), and its 12 pin links to each other with 2 pin of this connector, and the drain electrode of metal-oxide-semiconductor (V7) links to each other with 3 pin of this connector, 4 pin ground connection of this connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220437357.2U CN202795578U (en) | 2012-08-31 | 2012-08-31 | Prepaid gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220437357.2U CN202795578U (en) | 2012-08-31 | 2012-08-31 | Prepaid gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202795578U true CN202795578U (en) | 2013-03-13 |
Family
ID=47822793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220437357.2U Expired - Lifetime CN202795578U (en) | 2012-08-31 | 2012-08-31 | Prepaid gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202795578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612544A (en) * | 2018-11-30 | 2019-04-12 | 重庆前卫克罗姆表业有限责任公司 | A kind of gas meter, flow meter that can passively switch power supply |
-
2012
- 2012-08-31 CN CN201220437357.2U patent/CN202795578U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612544A (en) * | 2018-11-30 | 2019-04-12 | 重庆前卫克罗姆表业有限责任公司 | A kind of gas meter, flow meter that can passively switch power supply |
| CN109612544B (en) * | 2018-11-30 | 2024-03-26 | 重庆前卫表业有限公司 | Gas meter capable of passively switching power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |