CN2784887Y - IC card prepayment gas meter and water meter with infrared communication function - Google Patents

IC card prepayment gas meter and water meter with infrared communication function Download PDF

Info

Publication number
CN2784887Y
CN2784887Y CN 200320102065 CN200320102065U CN2784887Y CN 2784887 Y CN2784887 Y CN 2784887Y CN 200320102065 CN200320102065 CN 200320102065 CN 200320102065 U CN200320102065 U CN 200320102065U CN 2784887 Y CN2784887 Y CN 2784887Y
Authority
CN
China
Prior art keywords
card
infrared
meter
gas meter
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200320102065
Other languages
Chinese (zh)
Inventor
陆春光
江云波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Holley Technology Co Ltd
Original Assignee
Holley Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holley Technology Co Ltd filed Critical Holley Technology Co Ltd
Priority to CN 200320102065 priority Critical patent/CN2784887Y/en
Application granted granted Critical
Publication of CN2784887Y publication Critical patent/CN2784887Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The utility model discloses a fully enclosed infrared IC card prepayment gas meter or water meter, which is composed of a fully enclosed prepayment gas meter or water meter with an infrared communication interface and an infrared communication palm set, wherein the prepayment gas meter or water meter has not IC card jack, the communication between the meter and the IC card is carried out by using the infrared communication palm set through the infrared modus. The prepayment gas meter or water meter is composed of a base meter and a prepayment module, the base meter is composed of a general mechanical gas meter or water meter and a data sensor. When the utility model is used, the IC card is inserted to an IC card socket of the infrared communication palm set, a button is pressed, and then gas-purchased or water-purchased data in the IC card can be read out and are sent to the prepayment gas meter or water meter through the infrared so as to accomplish the gas purchased or water purchased operation. Meanwhile, the prepayment gas meter or water meter writes the current residual gas flow or water flow data back to the IC card through the infrared so as to be enquired by an executive system. Meanwhile, due to the certified and encrypted means, the utility model has high data security, and is capable of effectively preventing means of illegally capturing the gas-purchasing or water-purchasing data, distorting the data, etc.

Description

Infrared IC card prepayment diaphragm gas meter and water meter
Technical field:
The utility model relates to a kind of gas meter, flow meter and water rate table, specifically relates to a kind of IC-card prepayment diaphragm gas meter and water meter with infrared communication function.
Background technology:
1, the gas meter, flow meter that generally uses at present only has single function of measuring, does not have control function, need carry out manual metering and charge.The IC-card prepayment diaphragm gas meter is a major transformation to traditional manual metering charging mode, it has overcome many disadvantages such as traditional manual metering fee collection amount is big, error big, the difficulty of tabling look-up, difficult charge, realize the scientific management pattern used behind the post-pay paystation, can stop phenomenon of defaulting effectively.Providing for people much simultaneously easily, can also increase work efficiency greatly, obtained to approve widely and promote.
The applied IC-card of existing IC-card payment system is mainly by two kinds: 1. Contact Type Ic Card: the IC-card of the type has the copper sheet contact of standard shape, realizes message exchange with external unit by the back that contacts, the contact with the IC-card seat.2. non-contact IC card (RF card): the IC-card of the type is a kind of integrated circuit card that transmits data with wireless mode, have same chip technology of Contact Type Ic Card and characteristic, maximum difference is that radio-frequency signal transceiver is arranged on the card, in certain distance, can receive and dispatch the signal of read write line, and not have the machinery contact between the read-write equipment.Because the RF card cost height of IC-card not only own, the cost of main is its transmitting and receiving module will be higher than the deck of contact-type IC-card far away, and economy is not as Contact Type Ic Card, so what be most widely used at present is Contact Type Ic Card.But if adopt Contact Type Ic Card and the IC-card socket is set on prepayment diaphragm gas meter, prepayment diaphragm gas meter just can not complete closed, can't avoid artificial destruction and environmental damage.As in the south and the coastal cities of humidity, problem is then arranged in practical application, moist and crystal salt can cause short circuit, prepayment diaphragm gas meter is damaged, and the IC-card mouth is subject to pollutions such as dust, greasy dirt and causes loose contact.Because the IC-card socket exposes, and security performance is lower, purchase destiny according to easily being intercepted and captured in addition, anti-simultaneously attack performance is relatively poor, can to the IC-card interface in addition high pressure destroy, make prepayment diaphragm gas meter lose charging, control function.In addition, the position of the installation of the prepayment diaphragm gas meter in the resident family now is higher or more hidden, the plug-in card or (adopting the RF card) all very inconvenience of swiping the card.
2, the water meter that generally uses at present only has single function of measuring, does not have control function, need carry out manual metering and charge.The IC-card prepay water meter is a major transformation to traditional manual metering charging mode, it has overcome many disadvantages such as traditional manual metering fee collection amount is big, error big, the difficulty of tabling look-up, difficult charge, realize the scientific management pattern used behind the post-pay paystation, can stop phenomenon of defaulting effectively.Providing for people much simultaneously easily, can also increase work efficiency greatly, obtained to approve widely and promote.
The applied IC-card of existing IC-card prepay water meter is mainly by two kinds: 1. Contact Type Ic Card: the IC-card of the type has the copper sheet contact of standard shape, realizes message exchange with external unit by the back that contacts, the contact with the IC-card seat.2. non-contact IC card (RF card): the IC-card of the type is a kind of integrated circuit card that transmits data with wireless mode, have same chip technology of Contact Type Ic Card and characteristic, maximum difference is that radio-frequency signal transceiver is arranged on the card, in certain distance, can receive and dispatch the signal of read write line, and not have the machinery contact between the read-write equipment.Because the RF card cost height of IC-card not only own, the cost of main is its transmitting and receiving module will be higher than the deck of contact-type IC-card far away, and economy is not as Contact Type Ic Card, so that be most widely used at present is contact IC.
But if adopt Contact Type Ic Card and the IC-card socket is set on prepay water meter, prepay water meter just can not complete closed, can't avoid artificial destruction and environmental damage.In use, the tap water of low temperature enters the room and causes water pipe and water meter surface sweating often, trickle even water logging phenomenon also take place often, if the IC-card bayonet socket is contained on the prepay water meter, the moisture that enters the water meter circuit part very easily causes galvanic corrosion, and prepay water meter functional reliability and serviceable life are greatly reduced.Because the IC-card socket exposes, and security performance is lower, purchase water number according to easily being intercepted and captured in addition, anti-simultaneously attack performance is relatively poor, can to the IC-card interface in addition high pressure destroy, make prepay water meter lose charging, control function.In addition, the position of the installation of the prepay water meter in the resident family now is more hidden, the plug-in card or (adopting the RF card) all very inconvenience of swiping the card.
Summary of the invention:
Purpose of design: 1, provide a kind of novel totally enclosed IC-card prepayment diaphragm gas meter or water meter, its IC-card system is inserted on the infrared communication palm machine, can utilize infrared communication palm machine to purchase gas or purchase the water operation by infrared.
Design proposal 1: totally enclosed infrared IC card prepayment diaphragm gas meter, form by the totally enclosed prepayment diaphragm gas meter with infrared communication interface and infrared communication palm machine two parts, do not have the IC-card socket on the prepayment diaphragm gas meter, the communication between table and the IC-card utilizes infrared communication palm machine to be undertaken by infrared mode.This prepayment diaphragm gas meter is made up of base table and pre-payment module two parts, base table is made of standard machinery gas meter, flow meter and sensor, and the pre-payment module mainly comprises several partial circuits such as power supply, single-chip microcomputer, infrared reception/transmission and LCD demonstration, valve switch control.This infrared communication palm machine partly is provided with battery case, IC-card socket, button and infrared reception/power valve etc., circuit board is arranged in it, mainly comprise several partial circuits such as power supply, single-chip microcomputer, IC-card interface, infrared reception/transmission and button, status indicator lamp.During use IC-card is inserted in the IC-card socket of infrared communication palm machine, press button, can read and purchase the destiny certificate in the IC-card, by the infrared prepayment diaphragm gas meter that sends to, finish and purchase the gas operation, prepayment diaphragm gas meter returns current data such as residue tolerance and writes in the IC-card simultaneously, for the management system inquiry.
A user only is set in addition purchases the gas card, be used for the user and pay the fees and purchase gas to selling gas management department, required detection in operation such as required increase tolerance, zero clearing, modification key and the operational process in the production run, operation such as check meter are undertaken by infrared mode with special-purpose communication handset.
Design proposal 2: totally enclosed infrared IC card prepay water meter, form by the totally enclosed prepay water meter with infrared communication interface and infrared communication palm machine two parts, do not have the IC-card socket on the prepay water meter, the communication between table and the IC-card utilizes infrared communication palm machine to be undertaken by infrared mode.This prepay water meter is made up of base table and pre-payment module two parts, and base table is made of standard machinery formula water meter and sensor, and the pre-payment module mainly comprises several partial circuits such as power supply, single-chip microcomputer, infrared reception/transmission and LCD demonstration, valve switch control.This infrared communication palm machine partly is provided with battery case, IC-card socket, button and infrared reception/power valve etc., circuit board is arranged in it, mainly comprise several partial circuits such as power supply, single-chip microcomputer, IC-card interface, infrared reception/transmission and button, status indicator lamp.
During use IC-card is inserted in the IC-card socket of infrared communication palm machine, press button, can read and purchase the water number certificate in the IC-card, by the infrared prepay water meter that sends to, finish and purchase the water operation, prepay water meter is write current data such as surplus water in the IC-card by infrared returning simultaneously, for the management system inquiry.A user only is set in addition purchases the water card, be used for the user and pay the fees and purchase water to selling water authority, required detection in operation such as the required increase water yield, zero clearing, modification key and the operational process in the production run, operation such as check meter are undertaken by infrared mode with special-purpose communication handset.
The utility model is compared with background technology, the one, owing to adopt above technical scheme, make operation simpler, the user need not IC-card is inserted in prepayment diaphragm gas meter or the prepay water meter, as long as IC-card is inserted in the IC-card socket of infrared communication palm machine in the hand, aim at prepayment diaphragm gas meter or water meter and press button, just can will purchase tolerance or purchase the water yield and import in the prepayment diaphragm gas meter by infrared signal.Prepayment diaphragm gas meter or water meter return current data such as residue tolerance and write in the IC-card simultaneously, for the management system inquiry.And only need a subscriber card to get final product, increase tolerance card required in producing or water yield card, zero clearing card, modification key card and required test card in service, the card of checking meter have been removed, both made things convenient for manufacturer to produce, and also made things convenient for air feed or supply water the management division management.The 2nd, because prepayment diaphragm gas meter or water meter have kept original all-sealed structure, can guarantee not to be subjected to environmental pollution and artificial the attack.Adopt authentication and cryptographic means simultaneously, the data security height, strict has accomplished that Every household has an ammeter, table one card, and illegal intercepting and capturing are purchased gas or illegal cutting purchased water number and reached means such as altered data according to this and can effectively take precautions against.The 3rd, when the user uses, can hold IC-card and write IC-card, and be encrypted to selling gas or selling will purchase the destiny certificate after water department purchases gas or purchases water or purchase the water number certificate; IC-card is inserted in the infrared communication palm machine, and aims at prepayment diaphragm gas meter or water meter is pressed button, infrared communication palm machine just can send to prepayment diaphragm gas meter worker water meter by infrared transtation mission circuit with purchasing gas or purchasing the water number certificate in the IC-card; Prepayment diaphragm gas meter or water meter receive this data by its infrared receiving circuit, carry out a series of judgements after, data write in the entry data memory store; Prepayment diaphragm gas meter or water meter constantly will remain the tolerance or the water yield and warning tolerance compares, and does the corresponding warning and the processing of dying.The 4th, adopt the utility model, charge is convenient, and the user uses IC-card to selling gas or selling water department and pay the fees, and pays the fees earlier and afterwards uses, management science; Simple to operate, IC-card is inserted in the infrared communication palm machine, aligning prepayment diaphragm gas meter or water meter are pressed button and are got final product; Multiple functional, residue tolerance or the water yield and accumulation gas consumption or water consumption circulation show that residue tolerance or surplus water are not enough reports to the police, and use up to die or cut off the water supply.
Description of drawings:
Fig. 1 is the utility model system chart;
Fig. 2 is the utility model palm machine partial circuit block diagram;
Fig. 3 is totally enclosed infrared IC card prepayment diaphragm gas meter of the utility model or water meter block diagram.
Embodiment:
Embodiment 1: with reference to accompanying drawing 1~3.Totally enclosed infrared IC card prepayment diaphragm gas meter, form by the totally enclosed prepayment diaphragm gas meter with infrared communication interface and infrared communication palm machine two parts, do not have the IC-card socket on the prepayment diaphragm gas meter, the communication between prepayment diaphragm gas meter and the IC-card is undertaken by infrared mode by infrared communication palm machine.Prepayment diaphragm gas meter is made up of base table and pre-payment module two parts, the signal input part of single-chip microcomputer in the sensor signal output termination pre-payment mould in the base table.Base table is made of standard machinery gas meter, flow meter and sensor, the pre-payment module comprises that mainly power supply, single-chip microcomputer, infrared reception/transmission and LCD show, valve switch control, and the infrared reception/transmission interface in the single-chip microcomputer, LCD signal output interface connect, connect that infrared reception/transtation mission circuit, valve control signal output interface and alerting signal output interface connect infrared reception/transtation mission circuit respectively, LCD shows road, valve controling circuit and warning circuit.Infrared communication palm machine is provided with battery case, IC-card socket, button and infrared reception/power valve etc., is provided with circuit such as power supply, single-chip microcomputer, IC-card interface, infrared reception/transmission and button, status indicator lamp in it.The making of base table, pre-payment module, infrared communication palm machine all is a prior art, is not described herein at this.
Embodiment 2: with reference to accompanying drawing 1~3.Totally enclosed infrared IC card prepay water meter, form by the totally enclosed prepay water meter with infrared communication interface and infrared communication palm machine two parts, do not have the IC-card socket on the prepay water meter, the communication between table and the IC-card utilizes infrared communication palm machine to be undertaken by infrared mode.This prepay water meter is made up of base table and pre-payment module two parts, the signal input part of single-chip microcomputer in the sensor signal output termination pre-payment mould in the base table.Base table is made of standard machinery gas meter, flow meter and sensor, the pre-payment module comprises that mainly power supply, single-chip microcomputer, infrared reception/transmission and LCD show, valve switch control, and the infrared reception/transmission interface in the single-chip microcomputer, LCD signal output interface connect, connect that infrared reception/transtation mission circuit, valve control signal output interface and alerting signal output interface connect infrared reception/transtation mission circuit respectively, LCD shows road, valve controling circuit and warning circuit.Infrared communication palm machine is provided with battery case, IC-card socket, button and infrared reception/power valve etc., is provided with circuit such as power supply, single-chip microcomputer, IC-card interface, infrared reception/transmission and button, status indicator lamp in it.The making of base table, pre-payment module, infrared communication palm machine all is a prior art, is not described herein at this.Annotate: gas meter, flow meter changes the table water meter in the accompanying drawing 1, sells gas and changes into and sell water.
What need understand is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any innovation and creation that do not exceed the utility model connotation all fall in the protection domain of the present utility model.

Claims (8)

1, a kind of totally enclosed infrared IC card prepayment diaphragm gas meter, it is characterized in that: form by the totally enclosed prepayment diaphragm gas meter with infrared communication interface and infrared communication palm machine two parts, do not have the IC-card socket on the prepayment diaphragm gas meter, the communication between prepayment diaphragm gas meter and the IC-card is undertaken by infrared mode by infrared communication palm machine.
2, totally enclosed infrared IC card prepayment diaphragm gas meter according to claim 1, it is characterized in that: prepayment diaphragm gas meter is made up of base table and pre-payment module two parts, the signal input part of single-chip microcomputer in the sensor signal output termination pre-payment mould in the base table.
3, totally enclosed infrared IC card prepayment diaphragm gas meter according to claim 2, it is characterized in that: base table is made of standard machinery gas meter, flow meter and sensor, the pre-payment module comprises that mainly power supply, single-chip microcomputer, infrared reception/transmission and LCD show, valve switch control, and the infrared reception/transmission interface in the single-chip microcomputer, LCD signal output interface connect, connect that infrared reception/transtation mission circuit, valve control signal output interface and alerting signal output interface connect infrared reception/transtation mission circuit respectively, LCD shows road, valve controling circuit and warning circuit.
4, totally enclosed infrared IC card prepayment diaphragm gas meter according to claim 1, it is characterized in that: infrared communication palm machine is provided with battery case, IC-card socket, button and infrared reception/power valve etc., is provided with circuit such as power supply, single-chip microcomputer, IC-card interface, infrared reception/transmission and button, status indicator lamp in it.
5, a kind of totally enclosed infrared IC card prepay water meter, it is characterized in that: form by the totally enclosed prepay water meter with infrared communication interface and infrared communication palm machine two parts, do not have the IC-card socket on the prepay water meter, the communication between table and the IC-card utilizes infrared communication palm machine to be undertaken by infrared mode.
6, totally enclosed infrared IC card prepay water meter according to claim 5 is characterized in that: this prepay water meter is made up of base table and pre-payment module two parts, the signal input part of single-chip microcomputer in the sensor signal output termination pre-payment mould in the base table.
7, the totally enclosed infrared IC card prepay water meter of stating according to claim 5, it is characterized in that: base table is made of standard machinery gas meter, flow meter and sensor, the pre-payment module comprises that mainly power supply, single-chip microcomputer, infrared reception/transmission and LCD show, valve switch control, and the infrared reception/transmission interface in the single-chip microcomputer, LCD signal output interface connect, connect that infrared reception/transtation mission circuit, valve control signal output interface and alerting signal output interface connect infrared reception/transtation mission circuit respectively, LCD shows road, valve controling circuit and warning circuit.
8, totally enclosed infrared IC card prepay water meter according to claim 1, it is characterized in that: infrared communication palm machine is provided with battery case, IC-card socket, button and infrared reception/power valve etc., is provided with circuit such as power supply, single-chip microcomputer, IC-card interface, infrared reception/transmission and button, status indicator lamp in it.
CN 200320102065 2003-11-03 2003-11-03 IC card prepayment gas meter and water meter with infrared communication function Expired - Fee Related CN2784887Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200320102065 CN2784887Y (en) 2003-11-03 2003-11-03 IC card prepayment gas meter and water meter with infrared communication function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200320102065 CN2784887Y (en) 2003-11-03 2003-11-03 IC card prepayment gas meter and water meter with infrared communication function

Publications (1)

Publication Number Publication Date
CN2784887Y true CN2784887Y (en) 2006-05-31

Family

ID=36771859

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200320102065 Expired - Fee Related CN2784887Y (en) 2003-11-03 2003-11-03 IC card prepayment gas meter and water meter with infrared communication function

Country Status (1)

Country Link
CN (1) CN2784887Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010008265A1 (en) 2008-07-14 2010-01-21 Iusa S.A. De C.V. Prepayment system for supplying water or gas by means of a wireless intelligent card and meter for said system
CN101944250A (en) * 2010-09-19 2011-01-12 湖南银通科技有限责任公司 Management method of gas system
CN102201139A (en) * 2011-03-30 2011-09-28 福州福达仪表有限公司 IC (integrated circuit) card watermeter PDA (Personal Digital Assistant) with short message communication function
CN101527063B (en) * 2009-04-20 2012-08-15 廊坊新奥燃气设备有限公司 Method for buying fuel gas and recharging prepayment diaphragm gas meter
US20150002309A1 (en) * 2011-09-27 2015-01-01 Itron Metering Solutions Uk Ltd. Safe interaction of a user with a smart utility meter
CN104969081A (en) * 2012-11-14 2015-10-07 电子研究协会 System and method for measuring electrical energy with functions of pre-pay and data collection by means of an optical device
CN108154608A (en) * 2016-12-02 2018-06-12 防城港市港口区天平电子科技有限公司 A kind of practicality water meter management system
CN109443471A (en) * 2018-12-18 2019-03-08 成都前锋电子仪器有限责任公司 A kind of intelligent gas meter based on infrared communication technique

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010008265A1 (en) 2008-07-14 2010-01-21 Iusa S.A. De C.V. Prepayment system for supplying water or gas by means of a wireless intelligent card and meter for said system
DE112008003940T5 (en) 2008-07-14 2011-05-26 Sistemas Integrales De Medicion Y Control Stellum S.A. De C.V. Prepayment system for the supply of water or gas using a wireless smart card and counters for the system
LT5781B (en) 2008-07-14 2011-10-25 Sistemas Integrales De Medicion Y Control Stellum S. A. De C. V., , Prepayment system for supplying water or gas by means of a wireless intelligent card and meter for said system
CN101527063B (en) * 2009-04-20 2012-08-15 廊坊新奥燃气设备有限公司 Method for buying fuel gas and recharging prepayment diaphragm gas meter
CN101944250A (en) * 2010-09-19 2011-01-12 湖南银通科技有限责任公司 Management method of gas system
CN102201139A (en) * 2011-03-30 2011-09-28 福州福达仪表有限公司 IC (integrated circuit) card watermeter PDA (Personal Digital Assistant) with short message communication function
US20150002309A1 (en) * 2011-09-27 2015-01-01 Itron Metering Solutions Uk Ltd. Safe interaction of a user with a smart utility meter
AU2012314073B2 (en) * 2011-09-27 2017-02-02 Itron Metering Solutions Uk Ltd. Safe interaction of a user with a smart utility meter
US9734708B2 (en) * 2011-09-27 2017-08-15 Itron Metering Solutions Uk Ltd. Safe interaction of a user with a smart utility meter
CN104969081A (en) * 2012-11-14 2015-10-07 电子研究协会 System and method for measuring electrical energy with functions of pre-pay and data collection by means of an optical device
CN108154608A (en) * 2016-12-02 2018-06-12 防城港市港口区天平电子科技有限公司 A kind of practicality water meter management system
CN109443471A (en) * 2018-12-18 2019-03-08 成都前锋电子仪器有限责任公司 A kind of intelligent gas meter based on infrared communication technique

Similar Documents

Publication Publication Date Title
CN205318534U (en) Gas table of mutual transmission of IC -card, NFC and bluetooth
RS51499B (en) Prepayment system for electric power meters using a contactless smart card with an automatic supply cut off device
CN103310614A (en) Advanced metering system based on mobile APP (Application)
CN102521921A (en) Charge control device, prepayment electricity selling system, electricity selling system and method thereof
CN101526815A (en) Method for remotely managing gas meter terminal and intelligent gas meter realizing same
CN101866515A (en) Thermal control device for prepaying with noncontact-type smart IC card
CN2784887Y (en) IC card prepayment gas meter and water meter with infrared communication function
CN104900030A (en) Wireless power meter reading system based on two-dimensional code data transmission
CN103530948A (en) Intelligent local charge control system
CN104900031A (en) Wireless power meter reading system having terminal querying function
CN201429876Y (en) Electricity sale management system
CN204904328U (en) Intelligence is visited carwash service system
CN107862356A (en) Decrypt information of vehicles electronic recognition system in a kind of high in the clouds
KR101172973B1 (en) A paying system for the cost of electric power by wire-wireless that was charged to appliances is imposed to ID owners
CN210691467U (en) Prepayment electric energy meter based on NB-IOT communication
CN202331671U (en) Terminal integrating recording and recharging
CN202013609U (en) Prepaid electric meter based on GPRS (General Packet Radio Service) transmission
CN2706768Y (en) Infrared IC card prepaid electric energy meter
CN104574908A (en) Remote meter reading system
CN201327657Y (en) A pre-paid negative control terminal
CN201017467Y (en) Infrared intelligent electrical energy meter remote controller
CN1591439A (en) System and method for paying bus fares by using cell phone identification apparatus
CN214670882U (en) STS prepayment gas meter based on bluetooth communication
CN204537174U (en) A kind of hand-held sale of electricity read write line
CN201611495U (en) Centralized time-limiting and quantity-limiting electricity using management system and terminal

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060531

Termination date: 20121103