CN1262431A

CN1262431A - Calorimeter with IC card and method for calibrating sensor of calorimeter

Info

Publication number: CN1262431A
Application number: CN 99112657
Authority: CN
Inventors: 何绍文
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-28
Filing date: 1999-01-28
Publication date: 2000-08-09

Abstract

A calorimeter with IC card and a method for calibrating the sensor of calorimeter are disclosed. In order to realize low cost and high precision, a basic method includes use of high-level standard computer calibration system,including high-precision temp and flow sensors, metering standards of temp, flow, heat nd power, standard heat algorithm, and calibrating sensors and calorimeter in same condition. It can correctly display and calculate such heat supply parameters as energy consumption, flow and temp. Its advantages are low cost and high precision.

Description

IC-card heat energy table and the method for demarcating the heat energy table sensor

The method of IC-card heat energy table of the present invention and demarcation heat energy table sensor belongs to heat energy table and demarcation.

The thermal metering of China's heating does not carry out basically before the present invention.Begin to have had the facility of supporting thermal metering along with the modern a bit building of social development, but measuring instrument---heat energy table cost is all very expensive, external also is that expensive heat energy table measures with very accurate certain price, and show according to interrelated data: Germany is if the Sen Sonic heat energy table price of training, Ka Che company is 10,000 to 40,000 Renminbi; The heat energy table price of France Schlumberger company is 10,000 5 thousand to 60,000 3 thousand Renminbi.The external high-precision heat energy table that is adopted adds that computer remote management system cost is very expensive, is not suitable for China's national situation very much.A high-precision heat energy table will turn over several turning over compared with low one-level heat energy table price as everybody knows.And the scope that thermal metering faces big be difficult to the appraisal, with regard to resident heating, enterprises and institutions this part that heats, the cost of the most basic spending from thermal metering---heat energy table just is difficult to payment, and it is the urgency problem to be solved of present China thermal metering that the heat energy table that price is low, precision is high can be provided.

The objective of the invention is: the method that a kind of IC-card heat energy table is provided and demarcates the heat energy table sensor, general precision heat energy table is demarcated high precision, use and show at China's national situation Development and Production high precision, low cost, efficient, practical heating, heat supply thermal metering.

Content of the present invention is: IC-card heat energy table is by once table and secondary table are formed, once table comprises temperature sensor, flow sensor, the secondary table is called integrator again, it comprises: the connection terminal of watchcase, flow and temperature sensor, and the parameter that temperature, flow are housed on A/D converter, frequency converter, liquid crystal indicator, operation push-button, the watchcase shows and status indicator lamp; Also have the socket of IC-card on the watchcase, IC-card is arranged, table inside is to be calculating, memory unit and communication interface, the IC-card socket composition of core with the single-chip microcomputer.Application software comprises data acquisition process, thematic computer communication, and Application Software Program just is solidificated in memory chip the inside on the integrated circuit.Store the temperature corresponding to this table, the update information of flow parameter in the IC-card; When IC-card heat energy table starts operation, this table enters duty, the data message that stores on the IC-card is imported this table automatically, can show parameters such as supply and return water temperature, the temperature difference, instantaneous delivery, heat (power), average supply water temperature, water supply flow, accumulation of heat value and communication data.After reading in, the information that IC-card stores IC-card can be taken off from table.

IC-card heat energy table Homebrew is to design according to national standard according to measurement range and service condition that different medium, proportion, enthalpy and user provide.

After IC-card heat energy table comes into operation, the IC-card of checking meter is inserted the IC-card socket of heat energy table, the operational factor of this heat energy table can be write automatically in the IC-card, this moment, IC-card transmitted medium as information, and information is input to heat metering management computer system.

The scaling method of IC-card heat energy table sensor: standard scale and sensor, computing machine are constituted standard set heat metering system, examine and determine by national standard, computing machine carries out high-speed sampling by harvester, make temperature, the flow sensor of the heat energy table of being demarcated under equal environment, in same modular system, carry out the precision transmission respectively, record standard and quilt repeatedly and demarcate the gamut measured value of the several measuring section 0-100% of heat energy table, formation standard and the error contrast difference of being demarcated store in the Computer Database then.The information that deposits in comprises: table number, sensor number, corresponding IC-card numbering, corresponding error amount are deposited in the IC-card after data processing.When IC-card heat energy table puts into operation, get its correction factor automatically according to measuring section and carry out the precision calibration, realized the high precision heat Calculation.

The problem that calibration scale need be considered is a lot, there are throttling orifice plate, vortex street, different caliber, corresponding kind also a lot of from what the structure of table saw temperature, flow sensor, domestic industry use, see as flow sensor according to flow from the acquisition system of table---the flow on same pipeline of the corresponding output of pulse should equate, deposits in the IC-card error correction coefficient in and just finished demarcation so only find out the difference conduct of the pulse parameter this flow under.

The software self-control of data-switching, principle is according to different medium, proportion, the enthalpy block scheme that draws, the scope, the service condition that provide according to the user, by order requirement order standardization, demarcate for non-type, make according to importing computing machine of the high standard scale of precision of the capture card image data, the error amount of the value of the sensor of a collection of table of simultaneously measurable and standard scale up to a hundred measurement points under similarity condition and correspondence is through the changeless error amount of the check more than three times, the table of being demarcated is selected, and error amount is write corresponding IC-card.

Advantage of the present invention is: IC-card heat energy table makes by calibration scale and has improved measuring accuracy by demarcation, precision can bring up to 0.15% by original 0.8% after demarcating, the manufacturing of IC-card heat energy table is simple, cost is low, reliable and stable by the method for demarcating the measuring accuracy that improves this table, simple, IC-card heat energy table of the present invention with and the transducer calibration method make the metering heat energy that is fit to China's national situation, the heat energy surface city that shows the heating system operational factor that earthshaking economic implications and social effect be arranged with its cheap price and high precision.

Drawings attached 1 IC-card heat energy table composition frame chart of the present invention.

Accompanying drawing 2 IC-card heat energy table outside drawings.

Accompanying drawing 3 IC-card heat energy table metering system block diagrams.

Now the method with IC-card heat energy table and demarcation IC-card heat energy table sensor is further specified with the following examples in conjunction with the accompanying drawings:

Shown in accompanying drawing 1 IC-card heat energy table composition frame chart and accompanying drawing 2 IC-card heat energy table outside drawings:

The once table of IC-card heat energy table comprises two A1 of thermal resistance Pt-100 temperature sensor and A2, rotary wing flow sensor A, the secondary table comprises data acquisition mouth 1, Single Chip Microcomputer (SCM) system 2, IC-card 3, operation push-button 4,5, six LCD LCD 6 of light emitting diode status indicator lamp, watchcase 7, IC-card socket 8.Shown in accompanying drawing 3 IC-card heat energy table metering system block diagrams: in heat supply ductwork 10 is used in heating, adopt IC-card heat energy table of the present invention, use single-chip microcomputer and IC-card system 1, with flow sensor A and temperature sensor two A1, A2, detecting elements such as A/D converter 9, frequency converter 11, LCD 6, operation push-button 4 constitute the real time measure system, at first finish the demarcation to A1, A2.

1, calibration of sensor method: standard scale is placed identical temperature field with the temperature sensor A1, the A2 that are demarcated; Heat up simultaneously, lower the temperature and select the several temperature measuring section, in each measuring section, select a plurality of measurement points, as 1 ℃ ^-100 measurement points of 100 ℃ of full scales are by computing machine, capture card high speed acquisition, each measurement point standard scale and by the temperature value t of calibration sensor A1, A2 mark, t _A1, t _A2And the difference of temperature measurement _{T differs from 1}, t _{Differ from 2},, get t on each some temperature value through being determined at repeatedly more than three times to respectively these error amounts being stored in the computing machine as the value of revising by temperature sensor A1, the A2 of calibration scale _{Differ from 1}, t _{Differ from 2}Just selected these two Table As 1, A2 when being fixed value, the modified value with two tables formally writes corresponding IC-card A by computing machine then _CardIn, temperature sensor A1, A2 have just obtained demarcation so.

2, the scaling method of flow sensor: be connected on standard scale and tested surface low quantity sensor A on the same standard detection pipeline and change flow from one ton of flow value that is 1-100% with every table 100 of computer recording point to 100 tons of full scales, g _Mark, g _AWrite down the error g of 100 some flows measuring with capture card _DifferenceFrom 100 points of 0-full scale to do three back and forth more than, as error amount g _DifferenceWhen on respective point, immobilizing then the table demarcated of this piece to be considered to stability reliable, chosen, these errors all are recorded in the computing machine, write corresponding IC-card A _CardIn, use IC-card A _CardCome the error of while calibrational capacity sensors A just to finish IC-card A _CardNumber corresponding with table number A, during like this with table IC-card A is inserted socket in the table, IC-card A _CardThe calibration value IC-card heat energy table of reading into automatically to demarcate that is in operation just can use.As the above-mentioned rotary wing flow sensor A of product and thermal resistance Pt-100 temperature sensor A1, A2 and corresponding IC-card A _CardPut in storage in groups.

Require to be linked into the water supply that two temperature sensor A1, A2 having demarcated in the heating system insert pipeline respectively according to practicality, the return water temperature measurement point, flow sensor A packed into supply water or the circling water flow rate measurement point, it is on the signal input terminal that signal wire is introduced secondary instrument integrator data acquisition interface, with the IC-card A of correspondence _CardInsert on the secondary instrument interpolation block, when IC-card heat energy table starts operation, IC-card A _CardThe data of last storage are imported this table automatically and can be revised measuring error and show parameters such as supply water temperature, heat accurately, and trueness error is in 3.5/1000ths scopes.

IC-card heat energy table of the present invention and the method for demarcating the heat energy table sensor: it is applicable to resident's heating, hot water service, and operation control in the central heating system and trade settlement can solve the heating hear rate measurement problem of resident, independent enterprises and institutions, large-scale hotel, restaurant commercial building, government organs, campus or the like building.

Economical and practical, the thermal metering table that precision is high, reliable of the suitable present national conditions of being badly in need of for our country and scaling method will be for China's economic developments, reasonably warm up measuring control with thermal recovery provides most important contribution.

Claims

1, a kind of IC-card heat energy table is by once table and secondary table are formed, once table comprises temperature sensor, flow sensor, the secondary table is called integrator again, it comprises: the connection terminal of watchcase, flow and temperature sensor, the parameter that temperature, flow are housed on A/D converter, frequency converter, liquid crystal indicator, operation push-button, the watchcase shows and status indicator lamp, it is characterized in that: the socket that also has IC-card on the watchcase, IC-card is arranged, and table inside is to be calculating, memory unit and communication interface, the IC-card socket composition of core with the single-chip microcomputer.Application software comprises data acquisition process, thematic computer communication, and Application Software Program just is solidificated in memory chip the inside on the integrated circuit.

2, the scaling method of IC-card heat energy table sensor: standard scale and sensor, computing machine are constituted standard set heat metering system, examine and determine by national standard, computing machine carries out high-speed sampling by harvester, make temperature, the flow sensor of the heat energy table of being demarcated under equal environment, in same modular system, carry out the precision transmission with standard scale respectively, record standard and quilt repeatedly and demarcate the gamut measured value of the several measuring section 0-100% of heat energy table, formation standard and the error contrast difference of being demarcated store in the Computer Database then.The information that deposits in comprises: table number, sensor number, corresponding IC-card numbering, corresponding error amount are deposited in the IC-card after data processing.When IC-card heat energy table puts into operation, get its correction factor automatically according to measuring section and carry out the precision calibration, realized the high precision heat Calculation.

3, the IC-card in the IC-card heat energy table stores the temperature that should show, the update information of flow parameter according to claim 1; When IC-card heat energy table starts operation, this table enters duty, the data message that stores on the IC-card is imported this table automatically, can show parameters such as confession, return water temperature, the temperature difference, instantaneous delivery, heat (power), average supply water temperature, water supply flow, accumulation of heat value and communication data.After reading in, the information that IC-card stores IC-card can be taken off from table.

4, after IC-card heat energy table comes into operation according to claim 1, the IC-card of checking meter is inserted the IC-card socket of heat energy table, the operational factor of this heat energy table is write in the IC-card automatically, and this moment, IC-card transmitted medium as information, and information is input to heat metering management computer system.