CN105894778A - Periodic meter-reading system based on broadcasting and television network - Google Patents
Periodic meter-reading system based on broadcasting and television network Download PDFInfo
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- CN105894778A CN105894778A CN201610359056.5A CN201610359056A CN105894778A CN 105894778 A CN105894778 A CN 105894778A CN 201610359056 A CN201610359056 A CN 201610359056A CN 105894778 A CN105894778 A CN 105894778A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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Abstract
The invention discloses a periodic meter-reading system based on a broadcasting and television network. The periodic meter-reading system comprises a set top box of a user side, wherein the set top box is connected with a CMTS (Cable Modem Termination System) front-end system and terminal equipment of a broadcasting and television network user; the CMTS front-end system is connected with a DHCP (Dynamic Host Configuration Protocol) server I of the broadcasting and television network; the DHCP server I is also connected with a core router of the broadcasting and television network; the core router is also connected with a wireless communication module I which is connected with a concentrator; the concentrator is at least connected with a data acquisition unit; the data acquisition unit is connected with a gas meter by a power carrier interface; the gas meter also comprises a controller with an control program inside; the controller is connected with a gas detecting circuit, a gas-leakage monitoring module, a display, an electric valve, a timer, a storage and a single-chip-microcomputer fault alarming circuit. The periodic meter-reading system disclosed by the invention has the advantages that the investment cost is less, and the stability is good; due to arrangement of the single-chip-microcomputer fault alarming circuit, the operating state of a single chip microcomputer can be monitored in real time, an alarming sound can be given out once the working is abnormal, and then a worker is warned of handling.
Description
Technical field
The invention belongs to areas of information technology, particularly relate to a kind of kilowatt meter reading-out system.
Background technology
It is known that, traditionally for domestic water meter, ammeter, calorimeter and the meterage of gas meter, flow meter four table and management, major part is all to take personnel manually to copy several modes to indoor: the meter reading personnel reading user that registers one's residence uses water number evidence, then carries out adding up charging, then charges in user family.There is a lot of drawback in this method:
1. checking meter, labor intensity is big, efficiency is low；
2. leakage is copied and is copied unavoidably by mistake；
3. the cycle charged from checking meter to is long；
4. management is costly；
The most easily pretended to be by offender, there is potential safety hazard.
The second meter reading method is IC card type prepayment mode: meter reading personnel is without at user, and user buys magnetic card, IC card etc. by bank transfer expense or to water resource management department, provides consumption by purchase volume, completes fee collection.It has limitation water, pays conveniently function with water, and need not again lay spool, easy to install.But external a lot of developed countries do not advocate this way of paying, reason be they not think allow resident because for the moment unpaid water rate and lose the right that uses most basic water resource.
Remote automatic meter reading system be supervision department for industry and domestic water, electricity consumption, with hot and be monitored with gas, manage and control, and the important means that user's consumption situation is added up, analyzed.It is that the data utilizing concentrator to be collected by intellectual water meter carry out preserving, processing, and is connected with computer by network-bus, can as requested and carry out information exchange between computer.Wherein, the mode that the mode of concentrator collection data of water meter and concentrator are connected with computer is divided into wired and wireless two kinds of transmission means, wherein wired mode input cost is big, needs to lay substantial amounts of communication line and carries out data maintenance with building large-scale data center.In existing long-distance meter-reading system, typically take mixed transport network mode to realize long-distance meter-reading system, such as, use M-Bus bus or RS485 between table tool and harvester
Bus, uses small wireless, power line carrier etc. between harvester and concentrator.Wherein, using the communication that is acquired between device and concentrator of both the above mode, its stability is with site environment has the biggest relation, and its shortcoming is as follows:
1, when the spacing of reading meter collection machine Yu meter-copy collector is remote, using power line carrier to transmit data, interference meeting ratio is more serious, make power carrier normal communication apart from closer, in the place that ammeter is distant with the spacing of ammeter, speed of checking meter and reliability are the highest, even copy less than table.
2, small wireless is used to transmit data, but owing to scene exists multilayer water mud wall, and the site problems such as distance is remote, cause small wireless complete networking success rate low, effect of checking meter is bad.
3, the place that some environment is poor even cisco unity malfunction, 4, speed of checking meter also ratio relatively low, it is impossible to transmit bigger data volume, cause whole Automatic meter reading system to have certain manual maintenance.
Summary of the invention
In view of the above-mentioned problems in the prior art, a kind of periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd of offer is provided, it is that a kind of cost of investment is few, data transmission is susceptible to interference, good stability, check meter the remote intelligent meter recording system of operating speed and gathering speed is fast, coverage is big four tables unifications, solve the problems such as cost in prior art is high, data transmission Yi Ganrao, stability are the highest.
The technical solution used in the present invention is as follows:
A kind of periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd, Set Top Box including user side, Set Top Box connects CMTS front end system and the terminal unit of CHINA RFTCOM Co Ltd user, CMTS front end system is connected with the Dynamic Host Configuration Protocol server one of CHINA RFTCOM Co Ltd, Dynamic Host Configuration Protocol server one connects the core router having CHINA RFTCOM Co Ltd, core router connects the general headend core router having third-party operator, and general headend core router connects the Dynamic Host Configuration Protocol server two and BRAS server having third-party operator；Core router is also associated with wireless communication module one, wireless communication module one connects concentrator, concentrator has been at least connected with a data acquisition unit, data acquisition unit is connected by power carrier interface gas meter, gas meter also includes the controller being built-in with control program, and controller connects gas leakage monitoring module, display, electrodynamic valve, timer, memorizer and failure alarm circuit.
Further, gas leakage monitoring module includes gas sensor MQ-4, slide rheostat W, resistance one R21, resistance two R2 and electric capacity one C21, it is connected with power circuit after the heating wire series connection slide rheostat W of gas sensor MQ-4, the test side A of gas sensor MQ-4 is connected with power circuit, test side B is connected with the base stage of audion one T1, the colelctor electrode of audion one T1 is connected with UA555 chip, and the outfan of UA555 chip is connected with the control end of silicon controlled rectifier (SCR) SCR after being sequentially connected in series resistance four R4 and diode one D21.
Further, Set Top Box includes cable modem module, Set Top Box module and WIFI module；Concrete, Set Top Box is linked to CMTS front end system by cable modem module；Described Set Top Box module has two external physical network links, wherein a link is connected to cable modem module, another link is connected to WIFI module, and WIFI module arranges the Network Access Point one accessed for radio and television users and the Network Access Point two accessed for third-party operator user.
nullFurther，Failure alarm circuit includes relay J、Chip IC 1、Chip IC 2 and audion V1，The VCC foot of controller connects the contact J-1 of relay J，The other end of the contact J-1 of relay J connects power supply U1，The GND foot ground connection of controller (40)，The P1 foot of controller (40) connects the pin 1 of chip IC 3，The pin 2 of chip IC 3 connects the pin 1 of chip IC 4，The pin 3 of chip IC 3 connects resistance R1 and electric capacity C1，The other end of electric capacity C1 connects resistance R2、Resistance R3、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 4 of chip IC 3 connects the other end of resistance R2，The other end of resistance R1 connects resistance R4、The pin 4 of chip IC 1、The pin 8 of chip IC 1、The pin 8 of chip IC 2、Loudspeaker B and power supply U2，The other end of resistance R3 connects pin 1 ground connection of electric capacity C2 and chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The other end of resistance R4 connects resistance R5 and the pin 7 of chip IC 2，The other end of resistance R5 connects electric capacity C3、The pin 2 of chip IC 2 and the pin 6 of chip IC 2，The other end of electric capacity C3 connects electric capacity C4、The pin 1 of chip IC 2 ground connection，The pin 3 of chip IC 2 connects electric capacity C5，The other end of electric capacity C5 connects the other end of loudspeaker B，The pin 3 of chip IC 4 connects resistance R6 and resistance R7，The other end of resistance R6 connects resistance R8、Power supply U3、The pin 4 of chip IC 5 and the pin 8 of chip IC 5，The base stage of the other end connecting triode V1 of resistance R7，The colelctor electrode of audion V1 connects the other end and the electric capacity C6 of resistance R8，The other end of electric capacity C6 connects resistance R10、The negative electrode of diode D1、The pin 2 of chip IC 5 and the pin 6 of chip IC 5，The emitter stage of audion V1 connects anode and the resistance R9 of diode D1，The pin 4 of chip IC 4 connects the other end of resistance R9、The other end of resistance R10、The anode of diode D4、The negative electrode of diode D5、The pin 1 of relay J and chip IC 5，The pin 5 of chip IC 5 connects the other end of electric capacity C7，The pin 3 of chip IC 5 connects the anode of diode D3，The negative electrode of diode D3 connects the negative electrode of diode D2、Resistance R11、The pin 4 of resistance R12 and chip IC 2，The other end of resistance R11 connects negative electrode and the other end of relay J of diode D4，The other end of resistance R12 connects the anode of diode D5.
Further, timer includes six resistance, a variable resistance, four electric capacity, an amplifier, a comparator and a trigger, one end of first resistance R31 is connected with one end of variable resistance P, and the other end of the first resistance R31 is as external reference power input；One end of second resistance R32, one end of the 3rd resistance R33, one end of the first electric capacity C31 are connected with the other end of variable resistance P, the other end of the second resistance R32 and the first electric capacity C31 other end ground connection；The in-phase input end of another termination amplifier U1 of the 3rd resistance R33, the power positive end of amplifier U1 and one end connection of the second electric capacity C32 are followed by 3.3V power supply, the power supply negative terminal of amplifier U1 and the other end ground connection of the second electric capacity C32；One end of the inverting input of amplifier U1 and outfan and the 4th resistance R34 connects, the inverting input of another termination comparator U2 of the 4th resistance R34, the in-phase input end of comparator U2 and one end of the 5th resistance R35 connect, and the other end of the 5th resistance R35 is as signal input part；The power positive end of comparator U2 and one end connection of the 3rd electric capacity C33 are followed by 3.3V power supply, the power supply negative terminal of comparator U2 and the other end ground connection of the 3rd electric capacity C33；The outfan of comparator U2 and one end of the 6th resistance R36 connect, the other end of the 6th resistance R36 connects the clock end of trigger D, one end connection of the input of trigger D and power end and the 4th electric capacity C34 is followed by 3.3V power supply, the other end ground connection of the 4th electric capacity C34, the outfan of trigger D is as signal output part, and the controlled end of trigger D is as external control signal input.
In sum, compared with prior art, the invention has the beneficial effects as follows:
The single-chip microcomputer failure alarm circuit of the present invention can monitor the running status of single-chip microcomputer in real time, once occurs that operation irregularity will send chimes of doom, and warning staff processes through row；Further through Set Top Box, the terminal unit of CHINA RFTCOM Co Ltd user is communicatively coupled with CMTS front end system, and utilize CMTS front end system to connect core router connection concentrator, data acquisition unit and four tables (water meter, ammeter, hotlist and gas meter) of Dynamic Host Configuration Protocol server one, CHINA RFTCOM Co Ltd, this mode can utilize existing broadcasting and TV resource to arrange corresponding equipment in the occasion needed, avoid the repeated construction of network, save resource, cost；Having the timer (those skilled in the art understand its implementation herein) of periodically timing owing to the internal structure of gas meter is additionally arranged, property performance period is carried out checking meter gas meter.
Electric line carrier communication, with power circuit as transmission channel, has the advantages such as channel reliability is high, small investment is synchronization with power grid construction.Owing to make use of existing AC power cord as communication line, eliminate unpractical paving lineman's journey.And low-voltage power line is to lay for the power frequency electric energy of transmission 50Hz.Utilize existing power circuit to build low-voltage power carrier communication LAN and gather water meter, ammeter, hotlist and the related data of gas meter, it is not necessary to separately building communication line, cost of investment is few, and the kilowatt meter reading-out system construction period is short, circuit Maintenance free；And the carrier data communication of short distance LAN is set up at low-voltage power line, current technology comparative maturity, reliable, therefore communication quality is guaranteed.
CHINA RFTCOM Co Ltd is used all to use Cable as the medium of communication between data acquisition unit and concentrator, concentrator and harvester
Modem is linked in the CHINA RFTCOM Co Ltd connected by coaxial cable, carries out network communication each other, implements easily, is susceptible to interference, good stability；Further, coaxial cable bandwidth is relatively wide, thus improves check meter operating speed and gathering speed；Furthermore, it is to avoid repeated construction, increase the utilization rate of CHINA RFTCOM Co Ltd.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the system structure schematic diagram of the present invention；
Fig. 2 is the structure principle chart of Set Top Box in the present invention；
Fig. 3 is single-chip microcomputer failure alarm circuit schematic diagram in the present invention；
Fig. 4 is the schematic diagram of concentrator/data acquisition unit in the present invention；
Fig. 5 is the circuit diagram of gas leakage monitoring module in the present invention；
Fig. 6 is the structural representation of gas meter in the present invention；
Fig. 7 is the schematic diagram of Timer of the present invention.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, in addition to mutually exclusive feature and/or step, all can combine by any way.
Embodiment 1
As shown in Fig. 1 ~ Fig. 7: a kind of based on CHINA RFTCOM Co Ltd the periodicity kilowatt meter reading-out system of the present embodiment, Set Top Box 1 including user side, Set Top Box 1 connects CMTS front end system 3 and radio and television users terminal unit, and the terminal unit of CHINA RFTCOM Co Ltd user includes computer, mobile phone, TV etc.；CMTS front end system 3 is connected with the Dynamic Host Configuration Protocol server 1 of CHINA RFTCOM Co Ltd, Dynamic Host Configuration Protocol server 1 connects the core router 5 having CHINA RFTCOM Co Ltd, being also associated with N(N is the natural number more than or equal to 1) core router 5 is also associated with wireless communication module 1, wireless communication module 1 is GPRS+4G network communication module, wireless communication module 1 connects concentrator 21, concentrator 21 has been at least connected with a data acquisition unit 23, data acquisition unit 23 is connected by low voltage power line carrier communication LAN the water meter all using power carrier interface 45, ammeter, hotlist and gas meter 24, use the water meter of power carrier interface, ammeter, hotlist and gas meter 24 all include for controlling its electrodynamic valve whether closed；Core router 5 is also associated with the general headend core router 6 of third-party operator, setting up between CHINA RFTCOM Co Ltd and the Metropolitan Area Network (MAN) of third-party operator and have the passage carrying flowing of access to each other, general headend core router 6 connects the Dynamic Host Configuration Protocol server 27 and BRAS server 8 having third-party operator.Described third-party operator is the broadband Virtual network operator such as movement, UNICOM, Tie Tong, Great Wall, or have simultaneously therein two even more than.
Concentrator 21 is identical with data acquisition unit 23 structure, all include control module 30, power supply 31, memorizer 1, power line carrier interface module 33, ethernet interface module 34 and Cable Modem module 35, described power supply 31 is powered for described control module 30, described memorizer 1, power line carrier interface module 33 and ethernet interface module 34 are two-way with described control module 30 respectively to be electrically connected, and described Cable Modem module 35 is two-way with described ethernet interface module 34 to be electrically connected.
Wherein, gas meter 24 is ultrasonic wave gas meter, gas meter 24 includes being built-in with control program, and (control program those skilled in the art herein know, do not do and specifically repeat) controller 40, on controller 40 connect have coal gas detection circuit 41, gas leakage monitoring module 42, display 43, electrodynamic valve 44, timer 46 and memorizer 47.
Timer 46 includes six resistance, a variable resistance, four electric capacity, an amplifier, a comparator and a trigger, one end of first resistance R31 is connected with one end of variable resistance P, and the other end of the first resistance R31 is as external reference power input；One end of second resistance R32, one end of the 3rd resistance R33, one end of the first electric capacity C31 are connected with the other end of variable resistance P, the other end of the second resistance R32 and the first electric capacity C31 other end ground connection；The in-phase input end of another termination amplifier U1 of the 3rd resistance R33, the power positive end of amplifier U1 and one end connection of the second electric capacity C32 are followed by 3.3V power supply, the power supply negative terminal of amplifier U1 and the other end ground connection of the second electric capacity C32；One end of the inverting input of amplifier U1 and outfan and the 4th resistance R34 connects, the inverting input of another termination comparator U2 of the 4th resistance R34, the in-phase input end of comparator U2 and one end of the 5th resistance R35 connect, and the other end of the 5th resistance R35 is as signal input part；The power positive end of comparator U2 and one end connection of the 3rd electric capacity C33 are followed by 3.3V power supply, the power supply negative terminal of comparator U2 and the other end ground connection of the 3rd electric capacity C33；The outfan of comparator U2 and one end of the 6th resistance R36 connect, the other end of the 6th resistance R36 connects the clock end of trigger D, one end connection of the input of trigger D and power end and the 4th electric capacity C34 is followed by 3.3V power supply, the other end ground connection of the 4th electric capacity C34, the outfan of trigger D is as signal output part, and the controlled end of trigger D is as external control signal input.
Time control circuit mainly for generation of timing control signals, the first resistance R31, the second resistance R32 and variable resistance P using the level obtained by external reference power supply dividing potential drop as comparator U2 inverting input, using ultrasonic signal as in-phase input end；Before ultrasonic signal arrives, trigger D output low level is made by the controlled end of external control signal control trigger D, when ultrasonic signal arrives, the controlled end of external control signal no longer control trigger D, ultrasonic signal is compared by comparator U2 with external reference power supply dividing potential drop voltage division signal, when ultrasonic signal is less than external reference power supply voltage division signal, comparator U2 output low level, trigger D output low level signal is constant, when ultrasonic signal is higher than external reference power supply voltage division signal, comparator U2 exports high level, trigger D exports high level signal, enable timing circuit.
Gas meter 24 controls timing unit timing by time control circuit, obtains t accurately1With t2Value, and time value is delivered to ppu, ppu is according to t1With t2Value calculates the flow velocity that can accurately obtain air in pipeline, t1Represent the time receiving signal after first ultrasonic transducer sends signal in gas meter 24 to the second ultrasonic transducer, t2Represent that the second ultrasonic transducer receives the time of signal to the first ultrasonic transducer after sending signal.
Gas leakage monitoring module includes gas sensor MQ-4, slide rheostat W, resistance R1, resistance R2 and electric capacity C1, it is connected with power circuit after the heating wire series connection slide rheostat W of gas sensor MQ-4, the test side A of gas sensor MQ-4 is connected with power circuit, test side B is connected with the base stage of audion T1, the colelctor electrode of audion T1 is connected with UA555 chip, and the outfan of UA555 chip is connected with the control end of silicon controlled rectifier (SCR) SCR after being sequentially connected in series resistance R4 and diode one D1.Electric capacity C1 and electric capacity C2 is for the amplitude of stable detection signal.
nullController 40 is single-chip microcomputer，Failure alarm circuit includes relay J、Chip IC 1、Chip IC 2 and audion V1，The VCC foot of single-chip microcomputer connects the contact J-1 of relay J，The other end of the contact J-1 of relay J connects power supply U1，The GND foot ground connection of single-chip microcomputer，The P1 foot of single-chip microcomputer connects the pin 1 of chip IC 3，The pin 2 of chip IC 3 connects the pin 1 of chip IC 4，The pin 3 of chip IC 3 connects resistance R1 and electric capacity C1，The other end of electric capacity C1 connects resistance R2、Resistance R3、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 4 of chip IC 3 connects the other end of resistance R2，The other end of resistance R1 connects resistance R4、The pin 4 of chip IC 1、The pin 8 of chip IC 1、The pin 8 of chip IC 2、Loudspeaker B and power supply U2，The other end of resistance R3 connects pin 1 ground connection of electric capacity C2 and chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The other end of resistance R4 connects resistance R5 and the pin 7 of chip IC 2，The other end of resistance R5 connects electric capacity C3、The pin 2 of chip IC 2 and the pin 6 of chip IC 2，The other end of electric capacity C3 connects electric capacity C4、The pin 1 of chip IC 2 ground connection，The pin 3 of chip IC 2 connects electric capacity C5，The other end of electric capacity C5 connects the other end of loudspeaker B，The pin 3 of chip IC 4 connects resistance R6 and resistance R7，The other end of resistance R6 connects resistance R8、Power supply U3、The pin 4 of chip IC 5 and the pin 8 of chip IC 5，The base stage of the other end connecting triode V1 of resistance R7，The colelctor electrode of audion V1 connects the other end and the electric capacity C6 of resistance R8，The other end of electric capacity C6 connects resistance R10、The negative electrode of diode D1、The pin 2 of chip IC 5 and the pin 6 of chip IC 5，The emitter stage of audion V1 connects anode and the resistance R9 of diode D1，The pin 4 of chip IC 4 connects the other end of resistance R9、The other end of resistance R10、The anode of diode D4、The negative electrode of diode D5、The pin 1 of relay J and chip IC 5，The pin 5 of chip IC 5 connects the other end of electric capacity C7，The pin 3 of chip IC 5 connects the anode of diode D3，The negative electrode of diode D3 connects the negative electrode of diode D2、Resistance R11、The pin 4 of resistance R12 and chip IC 2，The other end of resistance R11 connects negative electrode and the other end of relay J of diode D4，The other end of resistance R12 connects the anode of diode D5.Diode D5 is light emitting diode.
The model of chip IC 1, chip IC 2 and chip IC 5 is NE555, and the model of chip IC 3 and chip IC 4 is 4N25.
nullThe operation principle of failure alarm circuit is: single-chip microcomputer connects the optical coupling isolation circuit being made up of chip IC 3 and chip IC 4 by its P1 pin，The other end connection monitoring circuit of optical coupling isolation circuit，Chip IC 1 and chip IC 2 are all operated in monostable delay state，The calculation of delay time is T=1.1RC，Chip IC 5 is a controlled multivibrator，Frequency of oscillation is about 2KHZ，When single-chip microcomputer is working properly，The time interval of the positive pulse that P1 human hair combing waste goes out is less than the delay time of chip IC 1，Pulse through chip IC 3 optical coupling from time，Photoswitch is open-minded，Discharge in the loop that the most charged electric capacity C1 forms through chip IC 3 and resistance R2，I.e. when single-chip microcomputer is normal，Voltage on electric capacity C1 is less than 2/3U2，Even if 2 feet of chip IC 1 and 6 foot voltages are higher than 1/3U2，Chip IC 5 will not overturn，Outfan 3 foot is low level，Diode D1 ends，Relay J is failure to actuate，When single-chip microcomputer operation troubles，Its P1 foot is to become big in low level or pulse spacing，Then chip IC 1 is after a period of time，Outfan 3 foot becomes high level，Diode D1 turns on，Relay turns on，Its normally-closed contact J-1 disconnects，Cut off microcontroller power supply，Simultaneously，4 feet of chip IC 2 are high level，Start vibration，Chimes of doom is sent by loudspeaker B.The ruuning situation of single-chip microcomputer, by 555 chip composition monitoring circuits, is monitored, operation irregularity once occurs by this circuit in real time, will send chimes of doom, and disconnect the power supply of single-chip microcomputer, prevent single-chip microcomputer to be burned out, circuit uses light-coupled isolation technology simultaneously, adds the anti-interference of circuit.
The present invention uses such scheme, normal, the stable operation of information gathering each equipment of end can be ensured, once there is operation irregularity in single-chip microcomputer, chimes of doom will be sent by the loudspeaker of single-chip microcomputer failure alarm circuit, and disconnect the power supply of single-chip microcomputer, preventing single-chip microcomputer to be burned out, circuit uses light-coupled isolation technology simultaneously, adds the anti-interference of circuit.
Set Top Box 1 includes cable modem module (CM module) 101, Set Top Box module (STB module) 102 and WIFI module 100；Concrete, Set Top Box 1 is linked to CMTS front end system 3 by cable modem module 101；Described Set Top Box module 102 has two external physical network links, wherein a link is connected to cable modem module 101, carrying out data exchange with cable modem module (CM module) 101, another link is connected to WIFI module, carries out data exchange with WIFI module；WIFI module arranges the Network Access Point one accessed for radio and television users and the Network Access Point two accessed for third-party operator user, and WIFI module and CM intermodule arrange connecting link, with transmission data to each other.And WIFI module 102 is provided with wired network interface and radio network interface, can be wireline mode from the Network Access Point for Broadcasting Cable Network user access of WIFI module 102, it is alternatively wireless mode, or existing wireline mode, there is again wireless mode (having this type of technology in prior art, here is omitted).Equally, the Network Access Point accessed for mobile subscriber of WIFI module can be wireline mode, it is possible to for wireless mode, or existing wireline mode, has again wireless mode.
Compared with prior art, described Set Top Box is on the basis of STB module, it is additionally arranged WIFI module and CM module, WIFI module is provided with again and is supplied to radio and television users and the Network Access Point of third-party operator user's access simultaneously, the CHINA RFTCOM Co Ltd user that accessed by WIFI module and third-party operator with being linked up with CMTS front end system 3 by CM module 22 per family, the DHCP server 27 of CHINA RFTCOM Co Ltd DHCP server 1 or third-party operator is contacted by CMTS front end system 3, thus realize the broadband inserting service of CHINA RFTCOM Co Ltd user and third-party operator user.Its versatility is good, it is to avoid the repeated construction of network, saves material and fund.
CHINA RFTCOM Co Ltd user, the broadband user etc. accessed including set-top box users, broadband PC user, Gcable, after accessing the Network Access Point for CHINA RFTCOM Co Ltd user access of WIFI module, send DHCP request, upload to CHINA RFTCOM Co Ltd DHCP server 1 through CM module by CMTS front end system 3, CHINA RFTCOM Co Ltd DHCP server one distribute access the Internet, IP address according to request for it.
Mobile subscriber, including CMCC user, CMCC HOME user etc., accesses the Network Access Point accessed for mobile subscriber that WIFI module is arranged, sends DHCP request, after Set Top Box detects its request message, insert the mobile subscriber DHCP specified in message
Option value, such as DHCP
Option60 value or DHCP Option82 value etc.；As for CMCC user, insert CMCC value；CMCC is inserted for CMCC HOME user
HOME value, then request message is connected to CMTS front end system 3 after CM module 101, again by being linked to CHINA RFTCOM Co Ltd DHCP server 1 on CMTS front end system 3, sending request to CHINA RFTCOM Co Ltd DHCP server 1, CHINA RFTCOM Co Ltd DHCP server 1 is according to comprising in request message and its operator corresponding Option60 or Option82 of mobile subscriber's type
Field value, such as CMCC, CMCC
HOME etc., are asked to be transmitted to the Metropolitan Area Network (MAN) of movement, and the DHCP server 27 of movement is allocated IP again and connects the Internet this user；User can be authenticated, authenticate by the BRAS server 8 of mobile network；And according to certification, authenticating result, distribute corresponding access rights to this user；Transmission and the reception of data is realized by the passage between the Metropolitan Area Network (MAN) of CMTS front end system 3 and movement.
Description of the invention and application are illustrative, are not wishing to limit the scope of the invention in above-described embodiment.The deformation of embodiments disclosed herein and change are possible, and for those skilled in the art, embodiment is replaced and the various parts of equivalence are known.It should be appreciated by the person skilled in the art that in the case of without departing from the spirit or essential characteristics of the present invention, the present invention can otherwise, structure, layout, ratio, and realize with other elements, material and parts.
Claims (5)
1. a periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd, it is characterized in that, Set Top Box (1) including user side, Set Top Box (1) connects CMTS front end system (3) and the terminal unit of CHINA RFTCOM Co Ltd user, CMTS front end system (3) is connected with the Dynamic Host Configuration Protocol server one (4) of CHINA RFTCOM Co Ltd, Dynamic Host Configuration Protocol server one (4) connects the core router (5) having CHINA RFTCOM Co Ltd, core router (5) connects the general headend core router (6) having third-party operator, general headend core router (6) connects Dynamic Host Configuration Protocol server two (7) and the BRAS server (8) having third-party operator；Core router (5) is also associated with wireless communication module one (22), wireless communication module one (22) connects concentrator (21), concentrator (21) has been at least connected with a data acquisition unit (23), data acquisition unit (23) is connected by power carrier interface (45) gas meter (24), gas meter (24) also includes the controller (40) being built-in with control program, and controller connects gas leakage monitoring module (42), display (43), electrodynamic valve (44), timer (46), memorizer (47) and failure alarm circuit (48).
A kind of periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd, it is characterized in that, gas leakage monitoring module includes gas sensor MQ-4, slide rheostat W, resistance one R21, resistance two R2 and electric capacity one C21, it is connected with power circuit after the heating wire series connection slide rheostat W of gas sensor MQ-4, the test side A of gas sensor MQ-4 is connected with power circuit, test side B is connected with the base stage of audion one T1, the colelctor electrode of audion one T1 is connected with UA555 chip, UA555
The outfan of chip is connected with the control end of silicon controlled rectifier (SCR) SCR after being sequentially connected in series resistance four R4 and diode one D21.
A kind of periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd, it is characterised in that Set Top Box (1) includes cable modem module (101), Set Top Box module (102) and WIFI
Module (100)；Concrete, Set Top Box (1) is linked to CMTS front end system (3) by cable modem module (101)；Described Set Top Box module (102) has two external physical network links, wherein a link is connected to cable modem module (101), another link is connected to WIFI module, and WIFI module arranges the Network Access Point one accessed for radio and television users and the Network Access Point two accessed for third-party operator user.
nullA kind of periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd，It is characterized in that，Failure alarm circuit includes relay J、Chip IC 1、Chip IC 2 and audion V1，The VCC foot of controller (40) connects the contact J-1 of relay J，The other end of the contact J-1 of relay J connects power supply U1，The GND foot ground connection of controller (40)，The P1 foot of controller (40) connects the pin 1 of chip IC 3，The pin 2 of chip IC 3 connects the pin 1 of chip IC 4，The pin 3 of chip IC 3 connects resistance R1 and electric capacity C1，The other end of electric capacity C1 connects resistance R2、Resistance R3、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 4 of chip IC 3 connects the other end of resistance R2，The other end of resistance R1 connects resistance R4、The pin 4 of chip IC 1、The pin 8 of chip IC 1、The pin 8 of chip IC 2、Loudspeaker B and power supply U2，The other end of resistance R3 connects pin 1 ground connection of electric capacity C2 and chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The other end of resistance R4 connects resistance R5 and chip IC 2
Pin 7, the other end of resistance R5 connects electric capacity C3, the pin 2 of chip IC 2 and the pin 6 of chip IC 2, the other end of electric capacity C3 connects electric capacity C4, the pin 1 of chip IC 2 ground connection, the pin 3 of chip IC 2 connects electric capacity C5, the other end of electric capacity C5 connects the other end of loudspeaker B, chip IC 4
Pin 3 connect resistance R6 and resistance R7, the other end of resistance R6 connects resistance R8, power supply U3, the pin 4 of chip IC 5 and the pin 8 of chip IC 5, the base stage of the other end connecting triode V1 of resistance R7, the colelctor electrode of audion V1 connects the other end and the electric capacity C6 of resistance R8, the other end of electric capacity C6 connects resistance R10, the negative electrode of diode D1, the pin 2 of chip IC 5 and the pin 6 of chip IC 5, the emitter stage of audion V1 connects anode and the resistance R9 of diode D1, the pin 4 of chip IC 4 connects the other end of resistance R9, the other end of resistance R10, the anode of diode D4, the negative electrode of diode D5, relay J
Pin 1 with chip IC 5, the pin 5 of chip IC 5 connects the other end of electric capacity C7, the pin 3 of chip IC 5 connects the anode of diode D3, the negative electrode of diode D3 connects the negative electrode of diode D2, resistance R11, resistance R12 and the pin 4 of chip IC 2, the other end of resistance R11 connects negative electrode and the other end of relay J of diode D4, and the other end of resistance R12 connects the anode of diode D5.
A kind of periodicity kilowatt meter reading-out system based on CHINA RFTCOM Co Ltd, it is characterized in that, timer (46) includes six resistance, a variable resistance, four electric capacity, an amplifier, a comparator and a trigger, one end of first resistance R31 is connected with one end of variable resistance P, and the other end of the first resistance R31 is as external reference power input；One end of second resistance R32, one end of the 3rd resistance R33, one end of the first electric capacity C31 are connected with the other end of variable resistance P, the other end of the second resistance R32 and the first electric capacity C31 other end ground connection；The in-phase input end of another termination amplifier U1 of the 3rd resistance R33, the power positive end of amplifier U1 and one end connection of the second electric capacity C32 are followed by 3.3V power supply, the power supply negative terminal of amplifier U1 and the other end ground connection of the second electric capacity C32；One end of the inverting input of amplifier U1 and outfan and the 4th resistance R34 connects, the inverting input of another termination comparator U2 of the 4th resistance R34, the in-phase input end of comparator U2 and one end of the 5th resistance R35 connect, and the other end of the 5th resistance R35 is as signal input part；The power positive end of comparator U2 and one end connection of the 3rd electric capacity C33 are followed by 3.3V power supply, the power supply negative terminal of comparator U2 and the other end ground connection of the 3rd electric capacity C33；The outfan of comparator U2 and one end of the 6th resistance R36 connect, the other end of the 6th resistance R36 connects the clock end of trigger D, one end connection of the input of trigger D and power end and the 4th electric capacity C34 is followed by 3.3V power supply, the other end ground connection of the 4th electric capacity C34, the outfan of trigger D is as signal output part, and the controlled end of trigger D is as external control signal input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610359056.5A CN105894778A (en) | 2016-05-27 | 2016-05-27 | Periodic meter-reading system based on broadcasting and television network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610359056.5A CN105894778A (en) | 2016-05-27 | 2016-05-27 | Periodic meter-reading system based on broadcasting and television network |
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| CN201610359056.5A Pending CN105894778A (en) | 2016-05-27 | 2016-05-27 | Periodic meter-reading system based on broadcasting and television network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106506656A (en) * | 2016-11-20 | 2017-03-15 | 广西大学 | A kind of data communication system based on electronic information technology |
| CN109743258A (en) * | 2019-02-27 | 2019-05-10 | 天津瑞晟智城科技发展有限责任公司 | A kind of concentrated collection telemetering type Internet of Things intelligence instrument router |
| CN110191180A (en) * | 2019-05-29 | 2019-08-30 | 株洲新奥燃气有限公司 | A kind of combustion gas industry and commerce user monitoring system and monitoring method based on Internet of Things |
| CN111369778A (en) * | 2020-04-24 | 2020-07-03 | 荣成市宇翔实业有限公司 | Intelligent gas meter with power bus carrier digital signal |
-
2016
- 2016-05-27 CN CN201610359056.5A patent/CN105894778A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106506656A (en) * | 2016-11-20 | 2017-03-15 | 广西大学 | A kind of data communication system based on electronic information technology |
| CN109743258A (en) * | 2019-02-27 | 2019-05-10 | 天津瑞晟智城科技发展有限责任公司 | A kind of concentrated collection telemetering type Internet of Things intelligence instrument router |
| CN110191180A (en) * | 2019-05-29 | 2019-08-30 | 株洲新奥燃气有限公司 | A kind of combustion gas industry and commerce user monitoring system and monitoring method based on Internet of Things |
| CN111369778A (en) * | 2020-04-24 | 2020-07-03 | 荣成市宇翔实业有限公司 | Intelligent gas meter with power bus carrier digital signal |
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Application publication date: 20160824 |