CN2473605Y - Non-contact IC card prepayment thermal flow meter - Google Patents
Non-contact IC card prepayment thermal flow meter Download PDFInfo
- Publication number
- CN2473605Y CN2473605Y CN 00266838 CN00266838U CN2473605Y CN 2473605 Y CN2473605 Y CN 2473605Y CN 00266838 CN00266838 CN 00266838 CN 00266838 U CN00266838 U CN 00266838U CN 2473605 Y CN2473605 Y CN 2473605Y
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- controller
- heat
- circuit
- card
- flowmeter
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Abstract
The utility model relates to a non-contact typed IC card prepayment heat meter comprising a flow meter, a control valve, a calculator, a controller and two temperature sensors. The flow meter and the control valve are connected into an integration. The controller is connected with the flow meter and the control valve through the control wire. The two temperature sensors are respectively installed at the inlet and the outlet of the heat exchanger. The lead-out wire of the temperature sensor is connected with the calculator and the controller. The inner circuit of the IC card and the heat meter of the utility model are completely separated. A data communication interface is also provided. Therefore, the utility model has the advantages of high reliability and safety in work and convenience in remote meters collecting, detection and management.
Description
The utility model relates to measurement instrument, particularly a kind of non-contact IC card Prepayment Heat Meter.
Along with the reform of country to improving constantly of requiring of building energy conservation and nationwide heating charge system, hot measuring instrument is obtaining increasingly extensive application.At present domestic more existing manufacturer production hot measuring instrument miscellaneous, the IC-card Prepayment Heat Meter is one of them.But the IC-card Prepayment Heat Meter of domestic manufacturer's production at present all is the Contact Type Ic Card calorimeter, many problems that are difficult to solve and overcome have been run in actual use, unreliable as the work of IC-card bayonet socket, the defective that these are fatal, reliability, the security of its work can't be protected, thereby limit applying of hot measuring instrument.
The purpose of this utility model is intended to overcome the problems of the prior art, and the internal circuit that proposes a kind of IC-card and calorimeter is not come in contact fully, thus the non-contact IC card Prepayment Heat Meter that the calorimeter internal circuit is isolated from the outside fully.
The purpose of this utility model can realize by following proposal.
The non-contact IC card Prepayment Heat Meter is made up of flowmeter, by-pass valve control, calculating and controller and temperature sensor.It is characterized in that the flowmeter and the by-pass valve control that can send electric pulse combine as a whole by screw thread, calculate with controller and link by control line and flowmeter and by-pass valve control, two temperature sensors are installed in the import and the exit of heat interchanger respectively, and the extension line of temperature sensor and calculating and controller link.
Below in conjunction with embodiment of the present utility model and accompanying drawing, the non-contact IC card Prepayment Heat Meter is described in detail.
Fig. 1 non-contact IC card Prepayment Heat Meter structural representation;
Fig. 2 non-contact IC card Prepayment Heat Meter schematic diagram.
The non-contact IC card Prepayment Heat Meter is identical with the general structure of Contact Type Ic Card prepay water meter, and all by flowmeter 1, by-pass valve control 4 calculates and compositions such as controller 5 and temperature sensor 2,3.The flowmeter and the by-pass valve control that can send electric pulse combine as a whole by screw thread, calculate with controller and link by control line and flowmeter and by-pass valve control, two temperature sensors are installed in the import and the exit of heat interchanger respectively, and the extension line of temperature sensor and calculating and controller link.
Calculate with controller in, metering circuit by 16 A/D change, mu balanced circuit forms the flow and the temperature signal of metering circuit reception flowmeter and temperature sensor.Metering circuit is sent the digital signal of temperature and flow into the counter of being made up of single-chip microcomputer after changing by A/D, also reaches communication port during these information of same.Calculate with the non-contact IC card read/write circuit of controller and form by RF transmit-receive circuit, base station.The control circuit with controller is calculated in the information input of counter and IC-card read/write circuit, and thus by-pass valve control is carried out control.Control circuit also is connected with one and shows liquid crystal.Show that liquid crystal can show the import and export temperature of heat interchanger, import and export temperature difference, the integrated flow of the calorimeter of flowing through, the surplus heat of calorimeter, calorimeter service time, operation valves duty.
What temperature sensor adopted is the PT1000 platinum resistance, platinum resistance is carried out armouring, and protected with shielding line.
The calorimeter principle of work is: the user is before using the non-contact IC card Prepayment Heat Meter, at first use the IC-card of providing by administrative authority, buy certain heat by management system, then the forward purchasing heat is write in the IC-card of access customer by the IC-card read-write equipment of management system with other relevant information.When the IC-card with user profile is placed in the scope of distance calculation and controller certain distance, calculating is read in the user profile in the IC-card with the radio circuit that the IC-card in the controller is read and write in the part, after confirming for information about through single-chip microcomputer, calculating is opened by-pass valve control with the control section in the controller.At this moment, the user can be with hot.
Use when hot, when the thermal liquid flowmeter of flowing through, the sensor that is installed on the flowmeter will send electric impulse signal, and this umber of pulse is carried out statistical counting, just can calculate the flow of the thermal liquid of the flowmeter of flowing through.
When flowing through thermal liquid in the heat interchanger with uniform temperature, the temperature sensor that is installed in the sensor on the flowmeter and is installed in heat interchanger import and export place respectively will measured flow and temperature signal reach calculate and controller in metering circuit, after metering circuit is changed by A/D, the digital signal of temperature and flow is sent into counter, calculate the heat of heat interchanger and surrounding environment according to program and with its storage by wherein single-chip microcomputer, also reach communication port during these information of same, can be used for remote data communication and control.
Along with the continuous increase of the heat interchanger thermal liquid flow of flowing through, the accumulation heat that is calculated by single-chip microcomputer constantly increases, and the surplus heat in user's calorimeter (user buys heat and calculates the poor of accumulation heat) constantly reduces.When surplus heat reduces to a certain degree, control system will continue to buy heat with the prompting user by buzzer warning, continue to use and purchase heat as the user, and when surplus heat was zero, controller was with closing control valve, and the user can't continue with heat.Want to carry IC-card and buy heat, again operation as the user by management system with heat.
The main advantage of contactless Prepayment Heat Meter is:
1) reliable operation and safe. Non-contact IC card prepayment uses Be the noncontact IC-card because the inside circuit of IC-card and heat table does not come in contact fully , thereby the inner circuit of heat table is isolated from the outside fully, make bayonet socket make moist, suffer The artificial attack of malice and the data problem such as lose has obtained basic solution.
2) convenient management. The user must buy earlier heat, can be with hot. This kind form is thorough Solved difficult charge problem in the past. Simultaneously, contactless Prepayment Heat Meter has number According to the communication interface, the teletransmission collection that can be used for the heat table is copied the inspection of controlling or being used for the heat table Survey, the transfer of data content of remote centralized meter-reading comprises user's usefulness heat, after-heat, heat The contents such as scale work state, heat exchanger inlet and outlet temperature, heat table use time. Should Interface also can be used for handheld terminal and checks meter. In addition, can also be easily and banking system Link, make heat metering charge realization of socialization.
3) heat is reported to the police. (user buys heat and meter to after-heat in user's heat table Calculate the poor of accumulation heat) when reducing to a certain degree, control system will be reported by buzzer It is alert with prompting user continuation purchase heat,
4) low electric alarm.The utility model adopts powered battery, and when the voltage of battery was lower than a certain value, controller was changed battery with the alarm user, continues use and when not changing battery and reaching a certain value, controller is with closing control valve as the user.Want to continue to use as the user, then must change battery.
Claims (4)
1. non-contact IC card Prepayment Heat Meter, form by flowmeter, by-pass valve control, calculating and controller and temperature sensor, it is characterized in that the flowmeter and the by-pass valve control that can send electric pulse combine as a whole by screw thread, calculate with controller and link by control line and flowmeter and by-pass valve control, two temperature sensors are installed in the import and the exit of heat interchanger respectively, and the extension line of temperature sensor and calculating and controller link.
2. according to the described calorimeter of claim 1, it is characterized in that calculating with the metering circuit of controller by 16 A/D change, mu balanced circuit forms, metering circuit receives the flow and the temperature signal of flowmeter and temperature sensor; Metering circuit is sent the digital signal of temperature and flow into the counter of being made up of single-chip microcomputer after changing by A/D, also reaches communication port during these information of same; Calculate with the non-contact IC card read/write circuit of controller and form by RF transmit-receive circuit, base station; The control circuit with controller is calculated in the information input of counter and IC-card read/write circuit, and thus by-pass valve control is carried out control.
3. according to the described calorimeter of claim 2, it is characterized in that the said calculating and the control circuit of controller also are connected one and show liquid crystal.
4. according to claim 1 or 2 described calorimeters, what it is characterized in that said temperature sensor employing is the PT1000 platinum resistance, platinum resistance is carried out armouring, and protected with shielding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00266838 CN2473605Y (en) | 2000-12-21 | 2000-12-21 | Non-contact IC card prepayment thermal flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00266838 CN2473605Y (en) | 2000-12-21 | 2000-12-21 | Non-contact IC card prepayment thermal flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2473605Y true CN2473605Y (en) | 2002-01-23 |
Family
ID=33620821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00266838 Expired - Fee Related CN2473605Y (en) | 2000-12-21 | 2000-12-21 | Non-contact IC card prepayment thermal flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2473605Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383506C (en) * | 2004-05-28 | 2008-04-23 | 黄瑞湄 | Heat exchange energy-saving efficient metering method and apparatus |
| CN100419317C (en) * | 2006-03-10 | 2008-09-17 | 郑州春泉暖通节能设备有限公司 | IC card heating charging control valve and its heating charging managing method |
-
2000
- 2000-12-21 CN CN 00266838 patent/CN2473605Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383506C (en) * | 2004-05-28 | 2008-04-23 | 黄瑞湄 | Heat exchange energy-saving efficient metering method and apparatus |
| CN100419317C (en) * | 2006-03-10 | 2008-09-17 | 郑州春泉暖通节能设备有限公司 | IC card heating charging control valve and its heating charging managing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |