CN1885361A - Intelligent meter employing wireless network to bidirectionally transmit data and system management operating scheme thereof - Google Patents
Intelligent meter employing wireless network to bidirectionally transmit data and system management operating scheme thereof Download PDFInfo
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- CN1885361A CN1885361A CN 200510046740 CN200510046740A CN1885361A CN 1885361 A CN1885361 A CN 1885361A CN 200510046740 CN200510046740 CN 200510046740 CN 200510046740 A CN200510046740 A CN 200510046740A CN 1885361 A CN1885361 A CN 1885361A
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Abstract
The invention relates to a wireless network bidirectional data transmission intelligent meter and relative system manage method, wherein the invention uses PAS wireless local telephone system and GSM/CDMA beehive mobile communication network, to realize automatic meter, pre-charge and automatic reading meter of tap water network, power network and fuel gas network, to improve the intelligent management, support cost calculation, and obtain profit result on-time.
Description
Technical field
The present invention relates to the charge of terminal user's gauging table of a kind of public enterprise tap water pipe network, power supply network, gas ductwork, check meter and intelligent management.Particularly a kind of wireless network to bidirectionally data transmission intelligent table and system management operating scheme.
Background technology
Domestic water meter, ammeter, the gas meter, flow meter that generally uses has only single function of measuring at present.Must use manually check meter and charge, need a large amount of manpower and materials, the situation that for a change traditional craft is checked meter, charged, people have developed the IC-card prepayment meter, and the IC-card collection is copied the intelligence table, and newly-built dwelling house is to promote the use of, and technology is ripe day by day." radio paging type multifunctional water meter " publication number CN1341847A " can wireless copy reading prepayment intellectual water meter ".Granted publication CN2565000Y.
Though solve the problem of manual counting cost by gas meter on the certain program of described IC-card prepayment meter, but still there is following shortcoming: often rub between forward purchasing card and the deck and get rusty, poor reliability, failure rate is many, and supply department can not in time grasp the sales volume and the fault of resource; Described IC-card collection copy intelligent tabulation determined pre-payment, make an inventory table constantly.But owing to, can't transform, also there is accident potential simultaneously, damages, might cause the multi-group data disappearance as a table to old dwelling house at building wall lining line.Cause damage for a plurality of users or supplying unit or bother.
Described " radio paging type multifunction table " publication number CN1341847A.Comprise: receiver module, metering module, multiple rate scale, accounting module, clock check and correction module, clock, display, the module of cutting off the water supply, alarm module, abnormal work module, power failure protection module, data transmitting module, respond module, power supply adopt alternating current 220V through being rectified into direct current or high-energy battery; the circuit complexity; power consumption is big; use the page transmission platform from establishing transmitting station; cost and maintenance cost height, performance difficulty.
Described " wireless copy reading prepayment intelligent water meter " Granted publication number: CN2565000Y, comprise: the controller that constitutes by single-chip microcomputer with Card Reader circuit, wireless signal transceiver, comprise and be installed in the one group of wireless signal transmission that has in the hand-held set of making a copy of the instrument function, receiver module, and another group is arranged on controller and receives transmitter module with the wireless signal of making a copy of that links as the microcontroller communication mouth of control module.Solved pre-payment.But need manually make a copy of, the power supply power consumption is big, can not in time check table and transmission data automatically.
Summary of the invention
The purpose of this invention is to provide a kind of wireless network to bidirectionally data transmission intelligent table and system management operating scheme, particularly utilize the PAS wireless local telephone system, GSM/CDMA honeycomb mobile communication network, realize public enterprise tap water pipe network, power supply network, the automatic gauge of gas ductwork, pre-payment and automatic data logging, improve government enterprise to the tap water pipe network, power supply network, the wireless network intelligent management of gas ductwork resource merchandise sales, help public enterprise and promptly and accurately calculate water,, the same day of gas resource, of that month, work as annual turnover, be convenient to calculate selling cost, in time obtain the profit and loss result.Help public enterprise and country to the macro adjustments and controls of resource, stop the user and be in arrears with public enterprise marketing money, increase work efficiency and save a large amount of manpowers, material resources, the reduction operating cost improves the economic and social benefits, thereby overcomes the shortcoming of existing technology.
The present invention takes following technical scheme: a kind of wireless network to bidirectionally data transmission intelligent table and system management operating scheme: described wireless network to bidirectionally data transmission intelligent table comprises by radio circuit, logic control circuit, base table data control circuit and power circuit four parts and forming.It is characterized in that described radio circuit includes radiating circuit and receiving circuit two parts are formed; Described logic control circuit is by protocol module, data processing module and accessory module; Described base table data control circuit is made up of base table data microprocessor, base table numerical value gage probe, display module, indicator knob, base table state sensor, base table State Control interface, mini-printer.Described power circuit is made up of the power supply integrated regulator, comprises 5 3V voltage stabilizers, 1 1.2V voltage stabilizer and 1 3.3V voltage stabilizer, carries out switch control by control terminal.
Described radio circuit includes radiating circuit and receiving circuit two parts are formed; Described radiating circuit is made up of quadrature modulator, emission power amplifier, transceiver toggle switch and bandpass filter.Described quadrature modulator is made up of the orthogonal modulation integrated circuit.By orthogonal modulation integrated circuit input baseband command signal, through secondary mixing output, the modulated quadrature system output of making a profit.The orthogonal modulation integrated circuit adopts a DC voltage output unit (automatic electric-level control) control output intensity.By cycle control, just can obtain the output of constant intensity.If its direct current has reached a best, just from control module, export.Described emission power amplifier enters monolithic integrated microwave circuit by the output signal of quadrature modulator, is amplified to then to send required intensity.By changing the threshold voltage of monolithic integrated microwave circuit, can control current sinking and output power grade.After the described transceiver toggle switch connecting circuit, the time that can select to send or receive switches, so that connect with antenna.Described bandpass filter makes the signal by quadrature modulator pass through bandpass filter earlier before arriving last line terminal, can reduce interference, as mirror image interference, non-linear harmonic wave interference etc.Described receiving circuit partly is made up of bandpass filter, front end frequency mixing module and secondary mixing.Described bandpass filter comprises dielectric filter, SAW SAW (Surface Acoustic Wave) filter, ceramic filter etc.Dielectric filter filters each grade intermediate-freuqncy signal, to reduce the signal do not wish the off band that receives.Ceramic filter adopts stupalith to make high Q value band-pass filter second level intermediate-freuqncy signal, does not wish the interference of the adjacent channel that receives with minimizing.The specific amplitude versus frequency characte people of SAW sound surface filter tool can replace traditional LE loop and single, double resonant tank.Described front end frequency mixing module is comprised to noise amplifier (LMA) and one-level mixing by front end mixing integrated circuit.The signal mixing of one-level local oscillator output 1.6GHz frequency band and the 1.9GHz frequency band that receives, the intermediate-freuqncy signal of making a profit after mixing output is by delivering to the next stage mixting circuit after the dielectric filter filtering.Described secondary mixing partly has functions such as the amplification of one-level intermediate frequency, secondary mixing, the amplification of secondary intermediate frequency, amplitude limit amplification and the reception of carrier wave identification signal.The secondary intermediate frequency is 10.8MHz, and this signal is exaggerated in intermediate frequency amplifier and limiting amplifier by ceramic filter, final signal from the intermediate frequency signal conveys to control module.RSSI (received signal intensity) signal changes DC voltage into by incoming level, is worth to come the discriminatory carrier signal by this.
Described logic control circuit comprises protocol module, data processing module and accessory module composition.Described protocol module is made up of channel-decoding, adjustment module, central processing unit, ROM (read-only memory), random access memory.Described channel decoding module is composed as follows: the intermediate-freuqncy signal that modulating part is sent here with the demodulation radio-frequency module; The TDMA/TDD module is used for handling the set of transmission data and receives data separating, the clock frequency of timing controlled by the 19.2MHz from radio-frequency module is exported, in the various operations of control, energy supply control module is provided the output of power control signal, as PLL-3V, PTX-3V, RX-3V, TCX0-3V etc., the source support that the radio-frequency module transmission is provided and receives; Phase-locked loop module is used for various control signals (as LE, CLK, RS1, RS2, LD etc.), for the phase-locked loop intergrated circuit of radio-frequency module provides frequency setting.Described adjustment module is by forming with the lower part: is used for the signal of π/frequency shift keying, the administration module of the carrier wave identification of received signal intensity identification is provided, and the transmission energy supply control module.Described central processing unit, ROM (read-only memory), random access memory,? central processing unit is that the random access memory of external flash and internal memory (address) provides protocol processes.It provides the interface with other modules (as decoder module and correlation module) simultaneously.Described data processing section is made up of decoder module and interface circuit.Described decoder module is responsible for the decoding of coded data signal, and commendation when it provides error in data simultaneously and inhibition control send the transmission data, as dialing tone, Chun bell sound and busy tone.In addition, by reducing current sinking, end to provide the clock signal of each module, to reach the purpose of economize on electricity.Described interface circuit comprises energy supply control module and other control circuits.They are controlled by accessory module.Described accessory module is formed by using CPU module, electricallyerasable ROM (EEROM), chip (address code, label weighted code) and human-machine interface module.Described application CPU module is used for the interface of control protocol module and data coding module, also is used for controlling wireless calling and receives control module, keyboard load module and peripheral circuit, as background light etc.Described electricallyerasable ROM (EEROM) has been stored mass data, as identification code, purchase volume, hardware device data and terminal parameter data etc.It keeps communicating by letter with the application central processing unit by the interface of 3 line types.Described human-machine interface module connects data interface connector by data interface connector by data capsule, can keep communication between the serial ports of central processing unit and PC.So just can carry out the test of mode switch setting and read-write electricity and can wipe data in attached ROM (read-only memory) and the flash memory equipment.
Described base table data control circuit is by data micro treatment module, base table numerical value gage probe, display module, form by strong, base table state sensor, base table State Control interface and printout interface.Described data micro treatment module is that the data of described logic control circuit transmission are handled and stored, described base table numerical value gage probe is mounted in the gage probe on the base table, and the metering signal of collection carries out data processing by the data micro treatment module.Described display module is by LCDs and LCD driver two parts, it is controlled by the data microprocessor, be used for showing response message by wireless receiving part and the information that receives, internal state and external operation, by key control video data and status information, the power saving design does not show at ordinary times.Described is to detect the external key input by central processing unit by being good for, the any key response also is to detect a look-at-me that is produced by the button input by central processing unit to realize, is used to open display screen video data and status information or print data and status information.Described base table state sensor is the on off state sensor that detects base table State Control topworks, is used for the on off state of data micro treatment module identification base table State Control topworks.Described base table State Control interface connects with base table State Control topworks (as water meter electromechanical valve, electric energy meter relay, gas meter, flow meter electromechanical valve), is controlled by the data micro treatment module.Described printout interface connects mini-printer, is used for the data and the status information of output print subscriber's meter.
Described power circuit is provided by the lithium battery of a 3.6V/550mA/h, power pack is made up of the power supply integrated regulator, comprise 5 3V voltage stabilizers, 1 1.2V voltage stabilizer and 1 3.3V voltage stabilizer, carry out switch control by data micro treatment module battery saving mode control terminal.
The transmission system of radio system is used 3.3V voltage.Oscillator source is operated under the 1.2V voltage.Hummer and printer operating voltage are 3.6V.The action of power unit is to be undertaken by the 3V voltage that 5 voltage stabilizers provide, and logic module, data micro treatment module, radio-frequency module etc. just can suppress to interfere with each other by the independently power supply power supply of each circuit module.
Principle of work: the CPU central controller of described wireless network to bidirectionally data transmission intelligent table, waking a radio circuit in per 24 hours up sends simultaneously and showed continuous data one group of same day, carry out data processing for wireless network prepaid data administrative center, receive information such as the data of subscriber's meter metering on the same day and duty when wireless network prepaid data administrative center after, send purchase volume data or confirmation to this table, after this wireless network to bidirectionally data transmission intelligent table receives the purchase volume data or confirmation of wireless prepaid control data corporation transmission, after the CPU central controller of wireless network to bidirectionally data transmission intelligent table is handled Data Receiving, stop radio circuit work, system wakes radio circuit once more up and repeats above-mentioned work after 24 hours, effectively save electric energy, make the lithium battery long-term work of a 3.6V/550mA/h.
The system management operating scheme is by PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network, wireless network prepaid data administrative center, the wireless network pre-payment management system that wireless network to bidirectionally data transmission intelligent table is formed.Described PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network are the large-scale mobile communication networks in town and country of spreading all over the country.Described wireless network prepaid data administrative center is made up of mobile phone, modulator-demodular unit, desk-top computer and printer; Described mobile phone links through unitor and, modulator-demodular unit; Described modulator-demodular unit connects with desk-top computer; Described desk-top computer is equipped with wireless network pre-payment management system software, and connects the output device printer.Realize the automatic gauge of public enterprise water meter, ammeter, gas meter, the wireless networked management of pre-payment and automatic data logging, by PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network, realize that the prepaid data administrative center of wireless network to bidirectionally data transmission intelligent table and shared enterprise carries out data communication.
Description of drawings
The present invention is described with reference to the accompanying drawings as follows:
Fig. 1 is an embodiment of the invention frame structure synoptic diagram
Fig. 2 is an embodiment of the invention system management operating scheme synoptic diagram.
Embodiment
Among Fig. 1; A kind of wireless network to bidirectionally data transmission intelligent table and system management operating scheme: described wireless network to bidirectionally data transmission intelligent table comprises by radio circuit, logic control circuit, base table data control circuit and power circuit four parts and forming.It is characterized in that described radio circuit includes radiating circuit and receiving circuit two parts are formed; Described logic control circuit is by protocol module, data processing module and accessory module; Described base table data control circuit is made up of base table data microprocessor, base table numerical value gage probe, display module, indicator knob, base table state sensor, base table State Control interface, mini-printer.Described power circuit is made up of the power supply integrated regulator, comprises 5 3V voltage stabilizers, 1 1.2V voltage stabilizer and 1 3.3V voltage stabilizer, carries out switch control by control terminal.
Described radio circuit includes radiating circuit 3 and receiving circuit 4 two parts are formed; Described radiating circuit 3 is made up of quadrature modulator, emission power amplifier, transceiver toggle switch 5 and bandpass filter.Described quadrature modulator is made up of the orthogonal modulation integrated circuit.By orthogonal modulation integrated circuit input baseband command signal, through secondary mixing output, the modulated quadrature system output of making a profit.The orthogonal modulation integrated circuit adopts a DC voltage output unit (automatic electric-level control) control output intensity.By cycle control, just can obtain the output of constant intensity.If its direct current has reached a best, just from control module, export.Described emission power amplifier enters monolithic integrated microwave circuit by the output signal of quadrature modulator, is amplified to then to send required intensity.By changing the threshold voltage of monolithic integrated microwave circuit, can control current sinking and output power grade.After described transceiver toggle switch 5 connecting circuit, the time that can select to send or receive switches, so that connect with antenna.Described bandpass filter makes the signal by quadrature modulator pass through bandpass filter earlier before arriving last line terminal, can reduce interference, as mirror image interference, non-linear harmonic wave interference etc.Described receiving circuit partly is made up of bandpass filter, front end frequency mixing module and secondary mixing.Described bandpass filter comprises dielectric filter, SAW SAW (Surface Acoustic Wave) filter, ceramic filter etc.Dielectric filter filters each grade intermediate-freuqncy signal, to reduce the signal do not wish the off band that receives.Ceramic filter adopts stupalith to make high Q value band-pass filter second level intermediate-freuqncy signal, does not wish the interference of the adjacent channel that receives with minimizing.The specific amplitude versus frequency characte people of SAW sound surface filter tool can replace traditional LE loop and single, double resonant tank.Described front end frequency mixing module is comprised to noise amplifier (LMA) and one-level mixing by front end mixing integrated circuit.The signal mixing of one-level local oscillator output 1.6GHz frequency band and the 1.9GHz frequency band that receives, the intermediate-freuqncy signal of making a profit after mixing output is by delivering to the next stage mixting circuit after the dielectric filter filtering.Described secondary mixing partly has functions such as the amplification of one-level intermediate frequency, secondary mixing, the amplification of secondary intermediate frequency, amplitude limit amplification and the reception of carrier wave identification signal.The secondary intermediate frequency is 10.8MHz, and this signal is exaggerated in intermediate frequency amplifier and limiting amplifier by ceramic filter, final signal from the intermediate frequency signal conveys to control module.RSSI (received signal intensity) signal changes DC voltage into by incoming level, is worth to come the discriminatory carrier signal by this.
Described logic control circuit 1 comprises protocol module, data processing module and accessory module composition.Described protocol module is made up of channel-decoding, adjustment module, central processing unit, ROM (read-only memory), random access memory.Described channel decoding module is composed as follows: the intermediate-freuqncy signal that modulating part is sent here with the demodulation radio-frequency module; The TDMA/TDD module is used for handling the set of transmission data and receives data separating, the clock frequency of timing controlled by the 19.2MHz from radio-frequency module is exported, in the various operations of control, energy supply control module is provided the output of power control signal, as PLL-3V, PTX-3V, RX-3V, TCX0-3V etc., the source support that the radio-frequency module transmission is provided and receives; Phase-locked loop module is used for various control signals (as LE, CLK, RS1, RS2, LD etc.), for the phase-locked loop intergrated circuit of radio-frequency module provides frequency setting.Described adjustment module is by forming with the lower part: is used for the signal of π/frequency shift keying, the administration module of the carrier wave identification of received signal intensity identification is provided, and the transmission energy supply control module.Described central processing unit, ROM (read-only memory), random access memory,? central processing unit is that the random access memory of external flash and internal memory (address) provides protocol processes.It provides the interface with other modules (as decoder module and correlation module) simultaneously.Described data processing section is made up of decoder module and interface circuit.Described decoder module is responsible for the decoding of coded data signal, and commendation when it provides error in data simultaneously and inhibition control send the transmission data, as dialing tone, Chun bell sound and busy tone.In addition, by reducing current sinking, end to provide the clock signal of each module, to reach the purpose of economize on electricity.Described interface circuit comprises energy supply control module and other control circuits.They are controlled by accessory module.Described accessory module is formed by using CPU module, electricallyerasable ROM (EEROM), chip (address code, label weighted code) and human-machine interface module.Described application CPU module is used for the interface of control protocol module and data coding module, also is used for controlling wireless calling and receives control module, keyboard load module and peripheral circuit, as background light etc.Described electricallyerasable ROM (EEROM) has been stored mass data, as identification code, purchase volume, hardware device data and terminal parameter data etc.It keeps communicating by letter with the application central processing unit by the interface of 3 line types.Described human-machine interface module connects data interface connector by data interface connector by data capsule, can keep communication between the serial ports of central processing unit and PC.So just can carry out the test of mode switch setting and read-write electricity and can wipe data in attached ROM (read-only memory) and the flash memory equipment.
Described base table data control circuit is by data micro treatment module 2, base table numerical value gage probe 9, display module 7, form by strong 10, base table state sensor 11, base table State Control interface 8 and printout interface 12.Described data micro treatment module 2 is that the data of described logic control circuit 1 transmission are handled and stored, the gage probe that described base table numerical value gage probe 9 is mounted on the base table, the metering signal of collection carries out data processing by data micro treatment module 2.Described display module 7 is by LCDs and LCD driver two parts, it is by 2 controls of data microprocessor, be used for showing response message by wireless receiving part and the information that receives, internal state and external operation, button 10 control video data and status informations, the power saving design does not show at ordinary times.Described is to detect external key 10 inputs by data microprocessor 2 by strong 10, the any key response also is to detect a look-at-me that is produced by button 10 inputs by the data microprocessor to realize, is used to open display screen video data and status information or print data and status information.Described base table state sensor 9 is the on off state sensors that detect base table State Control topworks, is used for the on off state of data micro treatment module 2 identification base table State Control topworkies.Described base table State Control interface 8 connects with base table State Control topworks (as water meter electromechanical valve, electric energy meter relay, gas meter, flow meter electromechanical valve), by 2 controls of data micro treatment module.Described printout interface 12 connects mini-printer, is used for the data and the status information of output print subscriber's meter.
Described power circuit 6 is provided by the lithium battery of a 3.6V/550mA/h, power pack is made up of the power supply integrated regulator, comprise 5 3V voltage stabilizers, 1 1.2V voltage stabilizer and 1 3.3V voltage stabilizer, carry out switch control by data micro treatment module 2 battery saving mode control terminals.
The transmission system of radio system is used 3.3V voltage.Oscillator source is operated under the 1.2V voltage.Hummer and printer operating voltage are 3.6V.The action of power unit is to be undertaken by the 3V voltage that 5 voltage stabilizers provide, and logic module 1, data micro treatment module 2, radio-frequency module etc. just can suppress to interfere with each other by the independently power supply power supply of each circuit module.
Principle of work: the CPU central controller of described wireless network to bidirectionally data transmission intelligent table 23, waking a radio circuit in per 24 hours up sends simultaneously and showed continuous data one group of same day, carry out data processing for wireless network prepaid data administrative center 22, receive information such as the data of subscriber's meter metering on the same day and duty when wireless network prepaid data administrative center 22 after, send purchase volume data or confirmation to this table, after this wireless network to bidirectionally data transmission intelligent table 23 receives the purchase volume data or confirmation of wireless prepaid control data corporation 22 transmissions, after the CPU central controller of wireless network to bidirectionally data transmission intelligent table 23 is handled Data Receiving, stop radio circuit work, system wakes radio circuit once more up and repeats above-mentioned work after 24 hours, effectively save electric energy, make the lithium battery long-term work of a 3.6V/550mA/h.
Among Fig. 2; The system management operating scheme is by PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network 21, wireless network prepaid data administrative center 22, n the wireless network pre-payment management system that user radio network bi-directional data transmission intelligent table 23 is formed.Described PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network 21 are the large-scale mobile communication networks in town and country of spreading all over the country.Described wireless network prepaid data administrative center is made up of mobile phone 221, modulator-demodular unit 222, desk-top computer 223 and printer 224; Described mobile phone 221 links through unitor and modulator-demodular unit 222; Described modulator-demodular unit 222 connects with desk-top computer 223; Described desk-top computer 223 is equipped with wireless network pre-payment management system software, and connects output device printer 224.Realize the automatic gauge of public enterprise water meter, ammeter, gas meter, the wireless networked management of pre-payment and automatic data logging realizes that by PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network 21 the wireless network to bidirectionally data transmission intelligent table 23 and the prepaid data administrative center 22 of shared enterprise carry out data communication.
Claims (7)
1. wireless network to bidirectionally data transmission intelligent table and system management operating scheme: described wireless network to bidirectionally data transmission intelligent table comprises by radio circuit, logic control circuit, base table data control circuit and power circuit four parts and forming.It is characterized in that described radio circuit includes radiating circuit and receiving circuit two parts are formed; Described logic control circuit is by protocol module, data processing module and accessory module; Described base table data control circuit is made up of base table data microprocessor, base table numerical value gage probe, display module, indicator knob, base table state sensor, base table State Control interface, mini-printer.Described power circuit is made up of the power supply integrated regulator, comprises 5 3V voltage stabilizers, 1 1.2V voltage stabilizer and 1 3.3V voltage stabilizer, carries out switch control by control terminal.
2. according to the wireless network to bidirectionally data transmission intelligent table and the system management operating scheme of claim 1, described radio circuit includes radiating circuit 3 and receiving circuit 4 two parts are formed; Described radiating circuit 3 is made up of quadrature modulator, emission power amplifier, transceiver toggle switch 5 and bandpass filter.Described quadrature modulator is made up of the orthogonal modulation integrated circuit.By orthogonal modulation integrated circuit input baseband command signal, through secondary mixing output, the modulated quadrature system output of making a profit.The orthogonal modulation integrated circuit adopts a DC voltage output unit (automatic electric-level control) control output intensity.By cycle control, just can obtain the output of constant intensity.If its direct current has reached a best, just from control module, export.Described emission power amplifier enters monolithic integrated microwave circuit by the output signal of quadrature modulator, is amplified to then to send required intensity.By changing the threshold voltage of monolithic integrated microwave circuit, can control current sinking and output power grade.After described transceiver toggle switch 5 connecting circuit, the time that can select to send or receive switches, so that connect with antenna.Described bandpass filter makes the signal by quadrature modulator pass through bandpass filter earlier before arriving last line terminal, can reduce interference, as mirror image interference, non-linear harmonic wave interference etc.Described receiving circuit partly is made up of bandpass filter, front end frequency mixing module and secondary mixing.Described bandpass filter comprises dielectric filter, SAW SAW (Surface Acoustic Wave) filter, ceramic filter etc.Dielectric filter filters each grade intermediate-freuqncy signal, to reduce the signal do not wish the off band that receives.Ceramic filter adopts stupalith to make high Q value band-pass filter second level intermediate-freuqncy signal, does not wish the interference of the adjacent channel that receives with minimizing.The specific amplitude versus frequency characte people of SAW sound surface filter tool can replace traditional LE loop and single, double resonant tank.Described front end frequency mixing module is comprised to noise amplifier (LMA) and one-level mixing by front end mixing integrated circuit.The signal mixing of one-level local oscillator output 1.6GHz frequency band and the 1.9GHz frequency band that receives, the intermediate-freuqncy signal of making a profit after mixing output is by delivering to the next stage mixting circuit after the dielectric filter filtering.Described secondary mixing partly has functions such as the amplification of one-level intermediate frequency, secondary mixing, the amplification of secondary intermediate frequency, amplitude limit amplification and the reception of carrier wave identification signal.The secondary intermediate frequency is 10.8MHz, and this signal is exaggerated in intermediate frequency amplifier and limiting amplifier by ceramic filter, final signal from the intermediate frequency signal conveys to control module.RSSI (received signal intensity) signal changes DC voltage into by incoming level, is worth to come the discriminatory carrier signal by this.
3. according to the wireless network to bidirectionally data transmission intelligent table and the system management operating scheme of claim 1, described logic control circuit 1 comprises protocol module, data processing module and accessory module composition.Described protocol module is made up of channel-decoding, adjustment module, central processing unit, ROM (read-only memory), random access memory.Described channel decoding module is composed as follows: the intermediate-freuqncy signal that modulating part is sent here with the demodulation radio-frequency module; The TDMA/TDD module is used for handling the set of transmission data and receives data separating, the clock frequency of timing controlled by the 19.2MHz from radio-frequency module is exported, in the various operations of control, energy supply control module is provided the output of power control signal, as PLL-3V, PTX-3V, RX-3V, TCXO-3V etc., the source support that the radio-frequency module transmission is provided and receives; Phase-locked loop module is used for various control signals (as LE, CLK, RS1, RS2, LD etc.), for the phase-locked loop intergrated circuit of radio-frequency module provides frequency setting.Described adjustment module is by forming with the lower part: is used for the signal of π/frequency shift keying, the administration module of the carrier wave identification of received signal intensity identification is provided, and the transmission energy supply control module.Described central processing unit, ROM (read-only memory), random access memory,? central processing unit is that the random access memory of external flash and internal memory (address) provides protocol processes.It provides the interface with other modules (as decoder module and correlation module) simultaneously.Described data processing section is made up of decoder module and interface circuit.Described decoder module is responsible for the decoding of coded data signal, and commendation when it provides error in data simultaneously and inhibition control send the transmission data, as dialing tone, Chun bell sound and busy tone.In addition, by reducing current sinking, end to provide the clock signal of each module, to reach the purpose of economize on electricity.Described interface circuit comprises energy supply control module and other control circuits.They are controlled by accessory module.Described accessory module is formed by using CPU module, electricallyerasable ROM (EEROM), chip (address code, label weighted code) and human-machine interface module.Described application CPU module is used for the interface of control protocol module and data coding module, also is used for controlling wireless calling and receives control module, keyboard load module and peripheral circuit, as background light etc.Described electricallyerasable ROM (EEROM) has been stored mass data, as identification code, purchase volume, hardware device data and terminal parameter data etc.It keeps communicating by letter with the application central processing unit by the interface of 3 line types.Described human-machine interface module connects data interface connector by data interface connector by data capsule, can keep communication between the serial ports of central processing unit and PC.So just can carry out the test of mode switch setting and read-write electricity and can wipe data in attached ROM (read-only memory) and the flash memory equipment.
4. according to the wireless network to bidirectionally data transmission intelligent table and the system management operating scheme of claim 1, described base table data control circuit is by data micro treatment module 2, base table numerical value gage probe 9, display module 7, form by strong 10, base table state sensor 11, base table State Control interface 8 and printout interface 12.Described data micro treatment module 2 is that the data of described logic control circuit 1 transmission are handled and stored, the gage probe that described base table numerical value gage probe 9 is mounted on the base table, the metering signal of collection carries out data processing by data micro treatment module 2.Described display module 7 is by LCDs and LCD driver two parts, it is by 2 controls of data microprocessor, be used for showing response message by wireless receiving part and the information that receives, internal state and external operation, button 10 control video data and status informations, the power saving design does not show at ordinary times.Described is to detect external key 10 inputs by data microprocessor 2 by strong 10, the any key response also is to detect a look-at-me that is produced by button 10 inputs by the data microprocessor to realize, is used to open display screen video data and status information or print data and status information.Described base table state sensor 9 is the on off state sensors that detect base table State Control topworks, is used for the on off state of data micro treatment module 2 identification base table State Control topworkies.Described base table State Control interface 8 connects with base table State Control topworks (as water meter electromechanical valve, electric energy meter relay, gas meter, flow meter electromechanical valve), by 2 controls of data micro treatment module.Described printout interface 12 connects mini-printer, is used for the data and the status information of output print subscriber's meter.
5. according to the wireless network to bidirectionally data transmission intelligent table and the system management operating scheme of claim 1, described power circuit 6 is provided by the lithium battery of a 3.6V/550mA/h, power pack is made up of the power supply integrated regulator, comprise 5 3V voltage stabilizers, 1 1.2V voltage stabilizer and 1 3.3V voltage stabilizer, carry out switch control by data micro treatment module 2 battery saving mode control terminals.
The transmission system of radio system is used 3.3V voltage.Oscillator source is operated under the 1.2V voltage.Hummer and printer operating voltage are 3.6V.The action of power unit is to be undertaken by the 3V voltage that 5 voltage stabilizers provide, and logic module 1, data micro treatment module 2, radio-frequency module etc. just can suppress to interfere with each other by the independently power supply power supply of each circuit module.
6. according to the wireless network to bidirectionally data transmission intelligent table and the system management operating scheme of claim 1, described principle of work: the CPU central controller of described wireless network to bidirectionally data transmission intelligent table 23, waking a radio circuit in per 24 hours up sends simultaneously and showed continuous data one group of same day, carry out data processing for wireless network prepaid data administrative center 22, receive information such as the data of subscriber's meter metering on the same day and duty when wireless network prepaid data administrative center 22 after, send purchase volume data or confirmation to this table, after this wireless network to bidirectionally data transmission intelligent table 23 receives the purchase volume data or confirmation of wireless prepaid control data corporation 22 transmissions, after the CPU central controller of wireless network to bidirectionally data transmission intelligent table 23 is handled Data Receiving, stop radio circuit work, system wakes radio circuit once more up and repeats above-mentioned work after 24 hours, effectively save electric energy, make the lithium battery long-term work of a 3.6V/550mA/h.
7. according to the wireless network to bidirectionally data transmission intelligent table and the system management operating scheme of claim 1, among described Fig. 2; The system management operating scheme is by PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network 21, wireless network prepaid data administrative center 22, n the wireless network pre-payment management system that user radio network bi-directional data transmission intelligent table 23 is formed.Described PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network 21 are the large-scale mobile communication networks in town and country of spreading all over the country.Described wireless network prepaid data administrative center is made up of mobile phone 221, modulator-demodular unit 222, desk-top computer 223 and printer 224; Described mobile phone 221 links through unitor and modulator-demodular unit 222; Described modulator-demodular unit 222 connects with desk-top computer 223; Described desk-top computer 223 is equipped with wireless network pre-payment management system software, and connects output device printer 224.Realize the automatic gauge of public enterprise water meter, ammeter, gas meter, the wireless networked management of pre-payment and automatic data logging realizes that by PAS wireless local telephone system or GSM/CDMA honeycomb mobile communication network 21 the wireless network to bidirectionally data transmission intelligent table 23 and the prepaid data administrative center 22 of shared enterprise carry out data communication.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046740 CN1885361A (en) | 2005-06-24 | 2005-06-24 | Intelligent meter employing wireless network to bidirectionally transmit data and system management operating scheme thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526815B (en) * | 2009-04-17 | 2011-08-10 | 成都秦川科技发展有限公司 | Method for remotely managing gas meter terminal and intelligent gas meter realizing same |
| CN103620420A (en) * | 2011-04-29 | 2014-03-05 | 施耐德电气美国股份有限公司 | System and method for determining utility cost savings |
| CN104884909A (en) * | 2012-11-06 | 2015-09-02 | 苏伊士环境集团 | Intelligent network for communicating data by radio, in particular for the remote reading of fluid meters |
-
2005
- 2005-06-24 CN CN 200510046740 patent/CN1885361A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526815B (en) * | 2009-04-17 | 2011-08-10 | 成都秦川科技发展有限公司 | Method for remotely managing gas meter terminal and intelligent gas meter realizing same |
| CN103620420A (en) * | 2011-04-29 | 2014-03-05 | 施耐德电气美国股份有限公司 | System and method for determining utility cost savings |
| CN103620420B (en) * | 2011-04-29 | 2018-11-09 | 施耐德电气美国股份有限公司 | System and method for determining communal facility cost savings |
| US10621601B2 (en) | 2011-04-29 | 2020-04-14 | Schneider Electric USA, Inc. | System and method for determining utility cost savings |
| CN104884909A (en) * | 2012-11-06 | 2015-09-02 | 苏伊士环境集团 | Intelligent network for communicating data by radio, in particular for the remote reading of fluid meters |
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