CN103424212B - Ultrasonic calorimeter calibration system and calibration steps - Google Patents
Ultrasonic calorimeter calibration system and calibration steps Download PDFInfo
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- CN103424212B CN103424212B CN201310370933.5A CN201310370933A CN103424212B CN 103424212 B CN103424212 B CN 103424212B CN 201310370933 A CN201310370933 A CN 201310370933A CN 103424212 B CN103424212 B CN 103424212B
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Abstract
A kind of method that the invention discloses ultrasonic calorimeter calibration system and by described calibration system, ultrasonic calorimeter is calibrated.Ultrasonic calorimeter calibration system, comprise ultrasonic calorimeter, the computing machine of built-in calibration system software, precision digital temperature measurer, USB type infrared communication device and flow calibrating device, the calibration data that calibration system software produces is passed to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter.The present invention, by the real-time medial temperature utilizing the built-in temperature measuring unit of inlet temperature sensor and outlet temperature sensor or ultrasonic calorimeter in ultrasonic type calibrating installation to obtain every ultrasonic calorimeter point, accurately, reliably can calculate standard volume; Calibration system adopts curve to approach the way revised and combine with interpolation correction in addition, makes the data correction effect of ultrasonic calorimeter more accurately with reliable.
Description
Technical field
A kind of method that the present invention relates to ultrasonic calorimeter calibration system and by described calibration system, ultrasonic calorimeter is calibrated.
Background technology
Ultrasonic calorimeter, dispatch from the factory calibrating on the basis that hardware aspect is qualified as a measuring products, need the performance test carrying out software aspect further, the calibration steps program design of software whether science, complete, whether running is implemented conscientious, be responsible for the q&r degree that substantially can reflect ultrasonic calorimeter, therefore, whether the hardware structure of ultrasonic calorimeter calibration system is reasonable, whether the factor of heat Calculation is considered comprehensive, whether whether science becomes cause calibration system can carry out accurately to ultrasonic calorimeter for the data processing of calibrating and measuring, the key that stable and science is calibrated.
Summary of the invention
One object of the present invention is to propose a kind of ultrasonic calorimeter calibration system, can carry out accurately, the calibration of stable and science to ultrasonic calorimeter.
To achieve these goals, the present invention adopts following technical scheme:
Ultrasonic calorimeter calibration system, comprises ultrasonic calorimeter, the computing machine of built-in calibration system software, precision digital temperature measurer, USB type infrared communication device and flow calibrating device; Ultrasonic calorimeter is connected on flow calibrating device; The read-write head end of USB type infrared communication device is connected with the optic electric interface of ultrasonic calorimeter, the USB end of USB type infrared communication device is connected with computing machine, and the calibration data that calibration system software produces is passed to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter; Precision digital temperature measurer is connected with computing machine by serial port data line; Flow calibrating device is connected with computing machine by data bus, flow calibrating device, comprise electronic platform scale, import and outlet pressure sensor and import and outlet temperature sensor, the data of electronic platform scale, import and outlet pressure sensor and import and outlet temperature sensor collection are uploaded on computing machine by data bus.
Another object of the present invention is to propose a kind of calibration steps adopting above-mentioned ultrasonic calorimeter calibration system to calibrate ultrasonic calorimeter, and it comprises following process step:
The calibration system software of a, startup ultrasonic calorimeter calibration system;
B, start flow calibrating device and relative program: 1. unlocking electronic platform balance, import and outlet pressure sensor and import and outlet temperature sensor, 2. precision digital temperature measurer is started, 3. ultrasonic calorimeter is set and enters align mode, 4. start USB type infrared communication device;
C, by computer settings initial calibration temperature; Keep temperature constant, run certain hour under same temperature, same flow conditions after, read the calorimeter temperature data, data on flows, the flow speed characteristic basic value calculate respectively and flow through the flow modificatory coefficient of calorimeter that collect;
D, to maintain in step c temperature-resistant, and from computing machine calibration system software flow velocity alignment settings Value Data storehouse, select different flow speed values, the operation of repeated execution of steps c is until complete the flow velocity calibration operation of all regulations successively;
E, from computing machine calibration system software temperature alignment settings Value Data storehouse, select different temperature values, the operation of repeated execution of steps c and steps d is until complete the temperature correction operation of all regulations successively;
F, calibration system software to through above-mentioned steps c, d, e operation after data, to flow modificatory coefficient march line approximation process and data interpolations correcting process under different temperature conditions, different flow speed values;
G, store the data after above-mentioned steps f process, the calibration data that calibration system software produces is issued to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter;
H, calibration terminate.
In above-mentioned steps c, there is following ratio relation in working time and sampling period, and namely the ratio of sampling period and working time is less than 0.01%, and wherein, the sampling period refers to that ultrasonic calorimeter measures the cycle of sampled data.
After starting the calibration system software of ultrasonic calorimeter calibration system, by calibration system software, frequency correction is carried out to ultrasonic calorimeter processor timer, guarantee that time precision is consistent with the standard time.
After starting the calibration system software of ultrasonic calorimeter calibration system, by the buoyancy factor of calibration system software correction flow calibrating device.
Compared with prior art, tool of the present invention has the following advantages:
The real-time medial temperature of the present invention by utilizing the built-in temperature measuring unit of inlet temperature sensor and outlet temperature sensor or ultrasonic calorimeter in ultrasonic type calibrating installation to obtain every ultrasonic calorimeter point, instead of the original method according to pipeline section temperature estimation every calorimeter temperature, accurately, reliably can calculate standard volume; Calibration system adopts curve to approach and revises the way that combines with interpolation correction, make the data correction effect of calorimeter more accurately, more reliable; Calibration system can carry out frequency correction operation to calorimeter, and greatly improve the clock accuracy of calorimeter, thus guarantee the accuracy of data accumulation, frequency correction clock accuracy in the year after next brings up to 6-8ppm from 15-20ppm; Calibration system can revise calibrating installation buoyancy factor, improves the measurement accuracy of standard volume further.
Accompanying drawing explanation
Fig. 1 is the structural drawing of ultrasonic calorimeter calibration system in the present invention;
Fig. 2 is the calibration process flow diagram of ultrasonic calorimeter calibration system in the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Shown in composition graphs 1, Fig. 2, ultrasonic calorimeter calibration system, comprises ultrasonic calorimeter 1, computing machine 2, precision digital temperature measurer 3, USB type infrared communication device 4 and flow calibrating device 5, the built-in calibration system software of computing machine 2.
Ultrasonic calorimeter 1 is connected on flow calibrating device 5, flow calibrating device is connected with computing machine by data bus, flow calibrating device, comprise electronic platform scale, inlet pressure sensor, outlet pressure sensor, inlet temperature sensor and outlet temperature sensor, pass through electronic platform scale, acquisition system run duration medium is by the accumulated quality of ultrasonic calorimeter, by inlet pressure sensor and outlet pressure sensor, the conduit entrance of acquisition system run duration and top hole pressure data, the real-time medial temperature of every calorimeter point is measured by inlet temperature sensor and outlet temperature sensor, replace the original method according to pipeline section temperature estimation every calorimeter temperature, standard volume calculates more accurate, more reliable, certainly, the real-time medial temperature of every calorimeter point also can be obtained by the temperature measurement unit that ultrasonic calorimeter is built-in.The data of electronic platform scale, inlet pressure sensor, outlet pressure sensor, inlet temperature sensor and outlet temperature sensor collection are uploaded on computing machine by data bus.
Precision digital temperature measurer is connected with computing machine by serial port data line, precision digital temperature measurer act as standard temperature collection and the temperature correction of ultrasonic calorimeter temperature sensor.
USB type infrared communication device has a read-write head end and a USB end, the read-write head end of USB type infrared communication device is connected with the optic electric interface of ultrasonic calorimeter, the USB end of USB type infrared communication device is connected with computing machine, and the calibration data that calibration system software produces is passed to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter.
The calibration flow process of ultrasonic calorimeter calibration system is as follows:
The calibration system software of a, startup ultrasonic calorimeter calibration system;
B, start flow calibrating device and relative program: 1. unlocking electronic platform balance, import and outlet pressure sensor and import and outlet temperature sensor, 2. precision digital temperature measurer is started, 3. ultrasonic calorimeter is set and enters align mode, 4. start USB type infrared communication device;
C, by computer settings initial calibration temperature; Keep temperature constant, read run certain hour under same temperature, same flow conditions after computer acquisition to calorimeter temperature data, data on flows, flow speed characteristic basic value calculate respectively and flow through the flow modificatory coefficient of calorimeter, and shown through the data gathered and calculate above-mentioned by calibration system software, flow modificatory coefficient in the present invention, hereinafter referred to as gain;
D, to maintain in step c temperature-resistant, and from computing machine calibration system software flow velocity alignment settings Value Data storehouse, select different flow speed values, the operation of repeated execution of steps c is until complete the flow velocity calibration operation of all regulations successively;
E, from computing machine calibration system software temperature alignment settings Value Data storehouse, select different temperature values, the operation of repeated execution of steps c and steps d is until complete the temperature correction operation of all regulations successively;
F, data processing: calibration system software is to the data after above-mentioned steps c, d, e operation, and the flow modificatory coefficient under different temperature conditions, different flow speed values carries out curve approximation process and method of interpolation correcting process;
G1(x,t)=A1*f11(x,t)+A2*f12(x,t)+A3；
G2(x,t)=B1*f21(x,t)+B2*f22(x,t)+B3；
G3(x,t)=C1*f31(x,t)+C2*f32(x,t)+C3；
G1 (x, t)-low discharge section gain-boosted op amp function;
G2 (x, t)-middle flow section gain-boosted op amp function;
G3 (x, t)-large discharge section gain-boosted op amp function;
Wherein, x-flow speed characteristic basic value, t-temperature, A1, B1, C1-single order fair curve constant, f11, f21, f31-single order fair curve function, A2, B2, C2-second order fair curve constant, f12, f22, f32-second order fair curve function, A3, B3, C3-constant;
G, store the data after above-mentioned steps f process, the calibration data that calibration system software produces is passed to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter;
H, calibration terminate.
In step c, there is following ratio relation in working time and sampling period, namely the ratio of sampling period and working time is less than 0.01%, wherein, sampling period refers to that ultrasonic calorimeter measures the cycle of sampled data, be generally 500ms, working time, long enough, can effectively reduce the error that calorimeter causes because sampling is lost.
The memory block that the computing machine calibration system software flow velocity alignment settings Value Data storehouse mentioned in steps d and step e and computing machine calibration system software temperature alignment settings Value Data storehouse are all present in computing machine is inner, is respectively used to store corresponding flow speed value and temperature value to complete the calibration operation of regulation.
In addition, after starting the calibration system software of ultrasonic calorimeter calibration system, by calibration system software, frequency correction is carried out to ultrasonic calorimeter processor timer, the clock accuracy of very big raising calorimeter, guarantee that time precision is consistent with the standard time, thus guarantee the accuracy of data accumulation, frequency correction clock accuracy in the year after next brings up to 6-8ppm from 15-20ppm.
In addition, according to the difference of ultrasonic calorimeter calibration system structure, after the calibration system software starting ultrasonic calorimeter calibration system, can be revised by the buoyancy factor of calibration system software to flow calibrating device, measure the data of true, the accurate buoyancy factor of ultrasonic calorimeter calibrating installation itself, improve the accuracy that standard volume is measured further.
The calibration flow process of above-mentioned ultrasonic calorimeter calibration system can as the calibration flow process first of calibration system, certainly, when having carried out calibration operation to similar calorimeter and having needed secondary calibration, calibration system software directly can enable secondary calibration operation, secondary calibration does not need the flow operations of carrying out above-mentioned steps d again, calibration system software directly enables secondary calibration, effectively can save the alignment time, promotes calibration operation efficiency.Gain mode is formed after calibration system software platform data processing:
K（x,t）={(x1,t,k1),(x2,t,k2),(x3,t,k3),......}
Wherein, x-flow speed characteristic basic value, the t-time, x1, x2, x3-measure period first point, second point, thirdly flow speed characteristic basic value, and k1, k2, k3-measure period first point, second point, thirdly flow modificatory coefficient;
The data of secondary calibration pattern formation are directly issued to ultrasonic calorimeter by USB type infrared communication device, and calorimeter adopts method of interpolation application to revise data.
Certainly; more than illustrate and be only preferred embodiment of the present invention; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this instructions; made all equivalently to substitute, obvious form of distortion, within the essential scope all dropping on this instructions, protection of the present invention ought to be subject to.
Claims (4)
1. use the calibration steps that ultrasonic calorimeter calibration system is calibrated ultrasonic calorimeter, described ultrasonic calorimeter calibration system comprises ultrasonic calorimeter, the computing machine of built-in calibration system software, precision digital temperature measurer, USB type infrared communication device and flow calibrating device; Ultrasonic calorimeter is connected on flow calibrating device; The read-write head end of USB type infrared communication device is connected with the optic electric interface of ultrasonic calorimeter, the USB end of USB type infrared communication device is connected with computing machine, and the calibration data that calibration system software produces is passed to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter; Precision digital temperature measurer is connected with computing machine by serial port data line; Flow calibrating device is connected with computing machine by data bus, flow calibrating device, comprise electronic platform scale, import and outlet pressure sensor and import and outlet temperature sensor, the data of electronic platform scale, import and outlet pressure sensor and import and outlet temperature sensor collection are uploaded on computing machine by data bus; It is characterized in that, described calibration steps comprises the steps:
A, start the calibration system software of described ultrasonic calorimeter calibration system;
B, start flow calibrating device and relative program: 1. unlocking electronic platform balance, import and outlet pressure sensor and import and outlet temperature sensor, 2. precision digital temperature measurer is started, 3. ultrasonic calorimeter is set and enters align mode, 4. start USB type infrared communication device;
C, by computer settings initial calibration temperature; Keep temperature constant, run certain hour under same temperature, same flow conditions after, read the calorimeter temperature data, data on flows, the flow speed characteristic basic value calculate respectively and flow through the flow modificatory coefficient of calorimeter that collect;
D, to maintain in step c temperature-resistant, and from computing machine calibration system software flow velocity alignment settings Value Data storehouse, select different flow speed values, the operation of repeated execution of steps c is until complete the flow velocity calibration operation of all regulations successively;
E, from computing machine calibration system software temperature alignment settings Value Data storehouse, select different temperature values, the operation of repeated execution of steps c and steps d is until complete the temperature correction operation of all regulations successively;
F, calibration system software to through above-mentioned steps c, d, e operation after data, to flow modificatory coefficient march line approximation process and data interpolations correcting process under different temperature conditions, different flow speed values;
G, store the data after above-mentioned steps f process, the calibration data that calibration system software produces is issued to ultrasonic calorimeter by USB type infrared communication device and is carried out calibration operation to ultrasonic calorimeter;
H, calibration terminate.
2. calibration steps according to claim 1, is characterized in that, in described step c, there is following ratio relation in working time and sampling period, namely the ratio of sampling period and working time is less than 0.01%, and wherein, the sampling period refers to that ultrasonic calorimeter measures the cycle of sampled data.
3. calibration steps according to claim 1, it is characterized in that, after starting the calibration system software of ultrasonic calorimeter calibration system, by calibration system software, frequency correction is carried out to ultrasonic calorimeter processor timer, guarantee that time precision is consistent with the standard time.
4. calibration steps according to claim 1, is characterized in that, after starting the calibration system software of ultrasonic calorimeter calibration system, by the buoyancy factor of calibration system software correction flow calibrating device.
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| CN201003994Y (en) * | 2006-08-31 | 2008-01-09 | 浙江天正电气股份有限公司 | Automatic marking and detection device for heat meter |
| CN101726373A (en) * | 2009-12-30 | 2010-06-09 | 河南新天科技有限公司 | Infrared mode intelligent calorimeter calibrating device and method |
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| CN201003994Y (en) * | 2006-08-31 | 2008-01-09 | 浙江天正电气股份有限公司 | Automatic marking and detection device for heat meter |
| CN101726373A (en) * | 2009-12-30 | 2010-06-09 | 河南新天科技有限公司 | Infrared mode intelligent calorimeter calibrating device and method |
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