CN201947302U - Handheld meter reading machine with double-communication mode - Google Patents
Handheld meter reading machine with double-communication mode Download PDFInfo
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- CN201947302U CN201947302U CN201020667017XU CN201020667017U CN201947302U CN 201947302 U CN201947302 U CN 201947302U CN 201020667017X U CN201020667017X U CN 201020667017XU CN 201020667017 U CN201020667017 U CN 201020667017U CN 201947302 U CN201947302 U CN 201947302U
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Abstract
The utility model discloses a handheld meter reading machine with a double-communication model. The handheld meter reading machine comprises a housing and a control circuit in the housing. The control circuit comprises a central processor, as well as a display screen, an operation keyboard, a memorizer and an RF (radio frequency) module which are connected with the interior of the central processor; the control circuit further comprises a 3G (The 3rd Generation Telecommunication) communication module. A communication antenna is arranged in the 3G communication module and connected with the central processor through a serial peripheral interface bus. A handheld gas meter reading machine system with the double-communication model based on an RF remote meter reading +EVD03G automatic back pass technology solves the problem that the meter-read data is still manually sent to a computer management platform to realize analysis and processing, alleviates the labor intensity of a meter reading person, achieves the purpose that during meter reading, data is analyzed and processed on the computer management platform, and has the characteristics of high speed and efficiency, and is thoroughly free of manual intervention.
Description
Technical field
The utility model relates to the gas meter reading field, is specifically related to a kind of hand-hold type meter reader with dual communication pattern.
Background technology
One of water, electricity, gas introducing gauge table over 100 years at the beginning of eighties of last century, the manual metering mode is the most traditional mode always, the effect of gas meter, flow meter is the tolerance that recording user uses, add up in a period of time by checking meter then, and convert out corresponding cost and collect to the user, the shortcoming of this working method is that workload is big, and because the situation of money usually appears receiving in a variety of causes, has caused the tremendous economic burden of operated gas enterprise.From the nineties, China's gas industry begins to promote the use of the IC-card prepayment diaphragm gas meter, emerging of IC-card prepayment diaphragm gas meter solved the problem of registering one's residence of checking meter effectively, solved the problem of difficult charge, but development along with gas industry, management becomes more meticulous day by day, though simple IC-card prepaid mode has realized prepaid, but can not effectively solve the tolerance real-time statistics, can not give traffic control, financial accounting brings more help, so must do more improvement and raising aspect product intelligent, at this moment the wireless long-distance meter-reading technology begins progressively to popularize at home.
What present wireless long-distance meter-reading technology adopted is the RF mode, i.e. integrated RF module in relevant gas meter, flow meter and hand-hold type meter reader, yet the transmitting power of existing RF module is lower, its effectively spacious distance is shorter, so just require the meter reading personnel that the hand-hold type meter reader is carried near the of gas meter, flow meter and can carry out data read, after this copying data can be passed to enterprising line data analysis of total computer management platform and processing manually the hand-hold type meter reader being carried go back to the master control center.Along with the expansion of city size and the extension of gas pipeline, the personnel's that check meter to the doorstep working strength is increasing, sometimes can cause the data of checking meter in time manually not to be sent on the computer management platform, causes relevant data analysis inaccurate.
The utility model content
Technical problem to be solved in the utility model provides a kind of hand-hold type meter reader with dual communication pattern, and it can realize the high speed of meter reading data and long-range efficiently passback, alleviates meter reading personnel's workload.
For solving above-mentioned purpose, a kind of hand-hold type meter reader that the utility model is designed with dual communication pattern, comprise shell and in the enclosure control circuit be set that wherein control circuit mainly is made of central processing unit and the display screen, operation keyboard, memory and the RF module that are connected on the central processing unit; Described control circuit also comprises a 3G communication module, is provided with communication antenna in this 3G communication module, and links to each other with central processing unit by serial peripheral interface bus.
The described 3G communication module of such scheme is preferably the EVDO module.
The described communication antenna of such scheme preferably includes built-in main antenna and diversity reception antenna.
The described central processing unit of such scheme is preferably flush bonding processor.
The described memory of such scheme preferably includes flash memory and random asccess memory.
As the improvement of such scheme, RF module of the present utility model mainly is made of RF transceiver, power amplification circuit, antenna-matching circuit and radio-frequency receiving-transmitting antenna; Wherein power amplification circuit comprises that signal receives the radio-frequency head analog switch and the antenna end analog switch of pre-amplification circuit, signal emission pre-amplification circuit and 2 four-way twin-stage double-throws, signal receives pre-amplification circuit and signal emission pre-amplification circuit is connected in parallel on respectively between 2 groups of delivery outlets of radio-frequency head analog switch and antenna end analog switch, and the input port of radio-frequency head analog switch connects the RF transceiver, and the input port of antenna end analog switch then links to each other with the radio-frequency receiving-transmitting antenna through antenna-matching circuit; 2 groups of control ports of radio-frequency head analog switch and antenna end analog switch link to each other respectively.
The balance filter circuit that the described signal emission of such scheme pre-amplification circuit mainly is made of electric capacity and inductance; The LC resonant circuit that inductance and electric capacity constitute; The radio frequency amplifier transistor; The LC filter circuit that inductance and electric capacity constitute; The 2nd LC filter circuit that inductance and electric capacity constitute; The transistor power supply filter circuit that electric capacity constitutes; Bias resistance; And current-limiting resistance constitutes; First delivery outlet of antenna end analog switch is connected in the drain electrode of radio frequency amplifier transistor through overbalance filter circuit, LC resonant circuit and a LC filter circuit; The drain electrode of this radio frequency amplifier transistor also is connected with output port of power source with the transistor power supply filter circuit respectively, the source ground of radio frequency amplifier transistor; The grid of radio frequency amplifier transistor is divided into two-way, and one the tunnel is connected on first delivery outlet of radio-frequency head analog switch through electric capacity, and another road then is connected on first control end of RF transceiver through the 2nd LC filter circuit, bias resistance and current-limiting resistance; First control end of above-mentioned RF transceiver a road through resistance, and the RC filter circuit that constitutes of electric capacity link to each other with first control end of radio-frequency head analog switch; Another road then through resistance, and the 2nd RC filter circuit that constitutes of electric capacity be connected on first control end of antenna end analog switch.
The filtering decoupling circuit that the preposition receiving circuit of the described signal of such scheme mainly is made of inductance and electric capacity; The radio frequency triode; The wave mode shaping circuit that resistance, electric capacity and inductance constitute; The bipolarity triode; And the formation of the filtering feedback circuit of resistance and electric capacity and formation; Second delivery outlet in the antenna end analog switch is connected to the base stage of radio frequency triode through the filtering decoupling circuit; The grounded emitter of radio frequency triode; A road of the collector electrode of radio frequency triode directly links to each other with second delivery outlet of radio-frequency head analog switch through electric capacity, and another road then is connected to respectively on second collector electrode of bipolarity triode and on the output port of power source by the wave mode shaping circuit; Second emitter of bipolarity triode, second base stage and first collector electrode are connected to the power input mouth through the filtering feedback circuit; First grounded emitter of bipolarity triode; First base stage of bipolarity triode is connected on second control end of RF transceiver through resistance; Second control end one tunnel of above-mentioned RF transceiver links to each other with second control end of radio-frequency head analog switch through resistance, and another road then is connected on second control end of antenna end analog switch through the 3rd RC filter circuit of resistance and electric capacity formation.
Compared with prior art, be provided with the dual communication module in the utility model, the RF module that wherein has a short range transmission characteristic can realize the data communication between hand-held meter reader and the user's gas table, and the 3G communication module with long-distance transmissions characteristic can realize handing the data communication between meter reader and the management platform; The data that this hand-hold type gas meter reading machine system that returns the dual communication pattern of technology based on RF remote meter reading+EVDO (3G) automatically just can solve after checking meter still need manually be delivered to enterprising line data analysis of computer management platform and handling problem, thereby alleviate meter reading personnel's labour intensity, enterprising line data analysis of computer management platform and processing have thoroughly been realized while checking meter data are sent back to, it is fast to have speed, the efficient height need not the characteristics of manual intervention completely; In addition, the utility model also constitutes transmission and the received power that improves the RF module by the circuit that improves the RF module, thereby allow hand-held meter reader and communication range between the user's gas table increase, even if the person of checking meter and user's gas table also can be finished the work of checking meter smoothly apart from than far the time like this.
Description of drawings
Fig. 1 is the hand-hold type meter reader control circuit schematic diagram of a kind of dual communication pattern of the utility model;
Fig. 2 is the circuit theory diagrams of RF module.
Embodiment
A kind of hand-hold type meter reader with dual communication pattern of the utility model comprises shell and setting control circuit in the enclosure.Wherein control circuit as shown in Figure 1, it mainly is made of central processing unit and the display screen, operation keyboard, memory and the RF module that are connected on the central processing unit.Described memory comprises flash memory and random asccess memory, and these two kinds of memories all link to each other with central processing unit by internal bus.Central processing unit of the present utility model adopts flush bonding processor, the embedded configurable operations ECOS of system of the inner use of flush bonding processor, and this system has configurability, tailorability, operability and real-time.The characteristics of embedded configurable operations system maximum are modularizations, and kernel is configurable, are used for doing the Embedded Application of data forwarding at the utility model, and embedded configurable operations system can save the space size of flash memory and random asccess memory greatly.For the data of solution after checking meter still need manually be delivered to enterprising line data analysis of computer management platform and handling problem, alleviate meter reading personnel's labour intensity, enterprising line data analysis of computer management platform and processing have thoroughly been realized while checking meter data are sent back to, control circuit of the present utility model also comprises a 3G communication module, be provided with communication antenna in this 3G communication module, and link to each other with central processing unit by serial peripheral interface bus.The 3G communication module can be selected the 3G communication module of mobile TD-SCDMA standard, the 3G communication module of the WCDMA of UNICOM standard for use, but in the utility model preferred embodiment, the 3G communication module adopts the EVDO module of telecommunications CDMA2000 standard.In order to ensure the reliable transmission of data, the utility model adopts double antenna diversity receiving technology, and promptly communication antenna comprises simultaneously by built-in main antenna and diversity reception antenna.
In order to receive in farther distance and to send meter reading data, the utility model has also carried out corresponding improvement to the RF module, and promptly the RF module mainly is made of RF transceiver, power amplification circuit, antenna-matching circuit and radio-frequency receiving-transmitting antenna; Wherein power amplification circuit comprises that signal receives the radio-frequency head analog switch U8 and the antenna end analog switch U7 of pre-amplification circuit, signal emission pre-amplification circuit and 2 four-way twin-stage double-throws, signal receives pre-amplification circuit and signal emission pre-amplification circuit is connected in parallel on respectively between 2 groups of delivery outlets of radio-frequency head analog switch U8 and antenna end analog switch U7, and the input port of radio-frequency head analog switch U8 connects the RF transceiver, and the input port of antenna end analog switch U7 then links to each other with the radio-frequency receiving-transmitting antenna through antenna-matching circuit; 2 groups of control ports of radio-frequency head analog switch U8 and antenna end analog switch U7 link to each other respectively.Power amplification circuit in the utility model RF module has adopted two amplification modes, to improve the transmitting-receiving power of RF module.
The design of above-mentioned signal reception pre-amplification circuit and signal emission pre-amplification circuit should be considered the requirement of performance number, satisfy transmitting-receiving needs at a distance again, also to consider simultaneously among the PCB situation to the circuit and the device of radio frequency sensitivity, and the interference problem of other instrument around the module.Therefore, in the utility model preferred embodiment, the physical circuit of signal reception pre-amplification circuit and signal emission pre-amplification circuit is as follows:
The balance filter circuit that signal emission pre-amplification circuit mainly is made of capacitor C 22, C23 and inductance L 7, L9; The LC resonant circuit that inductance L 1 and capacitor C 19 constitute; Radio frequency amplifier transistor Q10; The LC filter circuit that inductance L 17 and capacitor C 33, C100 constitute; The 2nd LC filter circuit that inductance L 6 and capacitor C 35 constitute; The transistor power supply filter circuit that capacitor C 34, C36 constitute; Bias resistance R30, R38; And current-limiting resistance R44 constitutes; First delivery outlet of antenna end analog switch U7 is connected in the drain electrode of radio frequency amplifier transistor Q10 through overbalance filter circuit, LC resonant circuit and a LC filter circuit; The drain electrode of this radio frequency amplifier transistor Q10 also is connected with output port of power source PA_PWR with the transistor power supply filter circuit respectively, the source ground of radio frequency amplifier transistor Q10; The grid of radio frequency amplifier transistor Q10 is divided into two-way, one the tunnel is connected on first delivery outlet of radio-frequency head analog switch U8 through capacitor C 45, and another road then is connected on the first control end RF_TXC_GDO0 of RF transceiver through the 2nd LC filter circuit, bias resistance and current-limiting resistance; The first control end RF_TXC_GDO0 of above-mentioned RF transceiver a road through resistance R 37, and the RC filter circuit that constitutes of capacitor C 12, C15 link to each other with first control end of radio-frequency head analog switch U8; Another road then through resistance R 25, and the 2nd RC filter circuit that constitutes of capacitor C 29 be connected on first control end of antenna end analog switch U7.
The filtering decoupling circuit that the preposition receiving circuit of signal mainly is made of inductance L 12 and capacitor C 37, C39; Radio frequency triode KST10MTF; The wave mode shaping circuit that resistance R 34, R35, capacitor C 42, C43, C87 and inductance L 14 constitute; Bipolarity triode BC847PN; And the formation of the filtering feedback circuit of resistance R 26, R27 and capacitor C 30 and formation; Second delivery outlet among the antenna end analog switch U7 is connected to the base stage of radio frequency triode KST10MTF through the filtering decoupling circuit; The grounded emitter of radio frequency triode KST10MTF; A road of the collector electrode of radio frequency triode KST10MTF directly links to each other with second delivery outlet of radio-frequency head analog switch U8 through capacitor C 40, C42, and another road then is connected to respectively on second collector electrode of bipolarity triode BC847PN and on the output port of power source RX_PWR by the wave mode shaping circuit; Second emitter of bipolarity triode BC847PN, second base stage and first collector electrode are connected to power input mouth 3V3 through the filtering feedback circuit; First grounded emitter of bipolarity triode BC847PN; First base stage of bipolarity triode BC847PN is connected on the second control end RF_TXC_GDO2 of RF transceiver through resistance R 28; The second control end RF_TXC_GDO2 one tunnel of above-mentioned RF transceiver links to each other with second control end of radio-frequency head analog switch U8 through resistance R 36, and another road then is connected on second control end of antenna end analog switch U7 through the 3rd RC filter circuit of resistance R 13 and capacitor C 28 formations.
Claims (8)
1. the hand-hold type meter reader that has the dual communication pattern comprises shell and is arranged on control circuit on the shell, and wherein control circuit mainly is made of central processing unit and the display screen, operation keyboard, memory and the RF module that are connected in the central processing unit; It is characterized in that: described control circuit also comprises a 3G communication module, is provided with communication antenna in this 3G communication module, and links to each other with central processing unit by serial peripheral interface bus.
2. according to the described hand-hold type meter reader with dual communication pattern of claim 1, it is characterized in that: described 3G communication module is the EVDO module.
3. according to the described hand-hold type meter reader with dual communication pattern of claim 1, it is characterized in that: described communication antenna comprises built-in main antenna and diversity reception antenna.
4. according to the described hand-hold type meter reader with dual communication pattern of claim 1, it is characterized in that: described central processing unit is a flush bonding processor.
5. according to the described hand-hold type meter reader with dual communication pattern of claim 1, it is characterized in that: described memory comprises flash memory and random asccess memory.
6. according to any described hand-hold type meter reader with dual communication pattern in the claim 1～5, it is characterized in that: described RF module mainly is made of RF transceiver, power amplification circuit, antenna-matching circuit and radio-frequency receiving-transmitting antenna; Wherein power amplification circuit comprises that signal receives the radio-frequency head analog switch (U8) and the antenna end analog switch (U7) of pre-amplification circuit, signal emission pre-amplification circuit and 2 four-way twin-stage double-throws, signal receives pre-amplification circuit and signal emission pre-amplification circuit is connected in parallel on respectively between 2 groups of delivery outlets of radio-frequency head analog switch (U8) and antenna end analog switch (U7), and the input port of radio-frequency head analog switch (U8) connects the RF transceiver, and the input port of antenna end analog switch (U7) then links to each other with the radio-frequency receiving-transmitting antenna through antenna-matching circuit; 2 groups of control ports of radio-frequency head analog switch (U8) and antenna end analog switch (U7) link to each other respectively.
7. according to the described hand-hold type meter reader of claim 6, it is characterized in that: the balance filter circuit that described signal emission pre-amplification circuit mainly is made of electric capacity (C22, C23) and inductance (L7, L9) with dual communication pattern; The LC resonant circuit that inductance (L1) and electric capacity (C19) constitute; Radio frequency amplifier transistor (Q10); The LC filter circuit that inductance (L17) and electric capacity (C33, C100) constitute; The 2nd LC filter circuit that inductance (L6) and electric capacity (C35) constitute; The transistor power supply filter circuit that electric capacity (C34, C36) constitutes; Bias resistance (R30, R38); And current-limiting resistance (R44) constitutes; First delivery outlet of antenna end analog switch (U7) is connected in the drain electrode of radio frequency amplifier transistor (Q10) through overbalance filter circuit, LC resonant circuit and a LC filter circuit; The drain electrode of this radio frequency amplifier transistor (Q10) also is connected the source ground of radio frequency amplifier transistor (Q10) with the transistor power supply filter circuit respectively with output port of power source (PA_PWR); The grid of radio frequency amplifier transistor (Q10) is divided into two-way, one the tunnel is connected on first delivery outlet of radio-frequency head analog switch (U8) through electric capacity (C45), and another road then is connected on first control end (RF_TXC_GDO0) of RF transceiver through the 2nd LC filter circuit, bias resistance and current-limiting resistance; First control end (RF_TXC_GDO0) of above-mentioned RF transceiver a road through resistance (R37), and the RC filter circuit that constitutes of electric capacity (C12, C15) link to each other with first control end of radio-frequency head analog switch (U8); Another road then pass through resistance (R25), and the 2nd RC filter circuit that constitutes of electric capacity (C29) be connected on first control end of antenna end analog switch (U7).
8. the hand-hold type meter reader with dual communication pattern according to claim 6 is characterized in that: the filtering decoupling circuit that the preposition receiving circuit of described signal mainly is made of inductance (L12) and electric capacity (C37, C39); Radio frequency triode (KST10MTF); The wave mode shaping circuit that resistance (R34, R35), electric capacity (C42, C43, C87) and inductance (L14) constitute; Bipolarity triode (BC847PN); And the formation of the filtering feedback circuit of resistance (R26, R27) and electric capacity (C30) and formation; Second delivery outlet in the antenna end analog switch (U7) is connected to the base stage of radio frequency triode (KST10MTF) through the filtering decoupling circuit; The grounded emitter of radio frequency triode (KST10MTF); A road of the collector electrode of radio frequency triode (KST10MTF) directly links to each other with second delivery outlet of radio-frequency head analog switch (U8) through electric capacity (C40, C42), and another road then is connected to respectively on second collector electrode of bipolarity triode (BC847PN) and on the output port of power source (RX_PWR) by the wave mode shaping circuit; Second emitter of bipolarity triode (BC847PN), second base stage and first collector electrode are connected to power input mouth (3V3) through the filtering feedback circuit; First grounded emitter of bipolarity triode (BC847PN); First base stage of bipolarity triode (BC847PN) is connected on second control end (RF_TXC_GDO2) of RF transceiver through resistance (R28); Second control end (RF_TXC_GDO2) one tunnel of above-mentioned RF transceiver links to each other with second control end of radio-frequency head analog switch (U8) through resistance (R36), and the 3rd RC filter circuit that resistance (R13) and electric capacity (C28) formation are then passed through in another road is connected on second control end of antenna end analog switch (U7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020667017XU CN201947302U (en) | 2010-12-17 | 2010-12-17 | Handheld meter reading machine with double-communication mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020667017XU CN201947302U (en) | 2010-12-17 | 2010-12-17 | Handheld meter reading machine with double-communication mode |
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| Publication Number | Publication Date |
|---|---|
| CN201947302U true CN201947302U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020667017XU Expired - Fee Related CN201947302U (en) | 2010-12-17 | 2010-12-17 | Handheld meter reading machine with double-communication mode |
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| CN (1) | CN201947302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492542A (en) * | 2018-04-03 | 2018-09-04 | 辛成辉 | A kind of improved electric energy meter copying device |
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2010
- 2010-12-17 CN CN201020667017XU patent/CN201947302U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492542A (en) * | 2018-04-03 | 2018-09-04 | 辛成辉 | A kind of improved electric energy meter copying device |
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| Date | Code | Title | Description |
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| 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: 20110824 Termination date: 20131217 |