CN101839790A - Intelligent on-line calibration system - Google Patents
Intelligent on-line calibration system Download PDFInfo
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- CN101839790A CN101839790A CN201010167914A CN201010167914A CN101839790A CN 101839790 A CN101839790 A CN 101839790A CN 201010167914 A CN201010167914 A CN 201010167914A CN 201010167914 A CN201010167914 A CN 201010167914A CN 101839790 A CN101839790 A CN 101839790A
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Abstract
The invention discloses an intelligent on-line calibration system, which comprises a calibrating component and a calibrated component, wherein the calibrating component comprises a first process, and a first pressure sensor, a first dew point sensor and a first temperature sensor which are connected with the first processor respectively; the calibrated component comprises a second processor and a second pressure sensor, a second dew point sensor and a second temperature sensor which are connected with the second processor respectively; the first processor and the second processor are connected by a communication link; the calibrating component collects a first group of parameters on pressure, dew point and temperature automatically and transmits the first group of parameters to the calibrated component; and the calibrated component compares the first group of parameters acquired from the calibrating component with a second group of parameters on pressure, dew point and temperature, which are collected by the calibrated component, and calibrates the sensors of a calibrated system respectively according to the result of the comparison.
Description
Technical field
The present invention relates to intelligent grid, relate in particular to a kind of intelligent on-line calibration system that is used for the high-tension switch gear of digital transformer substation.
Background technology
Intelligent grid is a complete information architecture and infrastructure system, realization utilizes management level, work efficiency, electric network reliability and the service level of the information raising grid company of " on-demand " to the persistent surveillance of power customer, electric power asset, electric power operation.For intelligent grid, digitizing is wherein important basis.At present, in the digital transformer substation high-tension switch gear is become repair based on condition of component by before scheduled overhaul, so status monitoring becomes inevitable trend, and wherein crucial sensor acquisition technology becomes the most important thing.By the correlation parameter of sensor acquisition high-tension switch gear equipment enforcement monitoring in real time and fault diagnosis are the inevitable course.But it is well-known, sensor is subjected to the influence of correlative factor, for example all there are drift to a certain degree in temperature, material etc., after one period cycle, the sampling precision of sensor is deviation to some extent, causes error to increase, handle the bad normal operation that then can influence entire equipment, so sensor is periodically revised, promptly demarcate, become necessity.
Usually, the high-tension switch gear in the digital transformer substation needs the on-line monitoring parameter to comprise pressure, dew point and temperature, and they are the parameter of gathering sealing gas among the GIS (gas-insulating and fully-enclosed power distribution equipment).
The demarcation of traditional pressure, temperature, dew point all in the laboratory or intra-company carry out, after parameter is drifted about by the characteristic of sensor in the operational process at the scene, need take off monitoring equipment, return-to-factory even former factory demarcate again.Be the parameter of gathering sealing gas because of these three sensors, take off monitoring equipment except that expending a large amount of manpower and materials, also might cause the leakage of sealing gas, seriously cause equipment normally not move, this avoids for substation operation is desired reliably, safety is big.
Summary of the invention
At the demand of existing market, the present inventor is by the acquisition principle and the correlation technique of the sensor of concentrating on studies, the proposition of novelty an a kind of key intelligent on-line calibration system of novelty.
Intelligent on-line calibration system of the present invention comprises to be demarcated assembly and is demarcated assembly, and wherein said demarcation assembly comprises: first processor; And first pressure transducer that links to each other with described first processor respectively, first dew point transducer and first temperature sensor;
Describedly demarcated assembly and comprised: second processor; And second pressure transducer, second dew point transducer and second temperature sensor that link to each other with described second processor respectively; Wherein, described first processor and described second processor interconnect through a communication link; Wherein, first group of parameter of described demarcation assembly automatic pressure acquisition, dew point and temperature, and described first group of parameter is sent to described by the demarcation assembly, described second group of parameter of being demarcated described first group of parameter that assembly will obtain from described demarcation assembly and pressure, dew point and the temperature of self collection compares respectively, according to the result of described comparison described each sensor by calibration system demarcated respectively.
According to a preferred embodiment, in above-mentioned intelligent on-line calibration system, described communication link is the CAN bus.
According to a preferred embodiment, in above-mentioned intelligent on-line calibration system, described first pressure transducer is connected to described first processor through an amplifying circuit and an analog to digital conversion circuit.
According to a preferred embodiment, in above-mentioned intelligent on-line calibration system, described second pressure transducer is connected to described second processor through an amplifying circuit and an analog to digital conversion circuit.
According to a preferred embodiment, in above-mentioned intelligent on-line calibration system, the precision of described first pressure transducer, first dew point transducer and first temperature sensor is higher than the precision of described second pressure transducer, second dew point transducer and second temperature sensor respectively.
According to a preferred embodiment, in above-mentioned intelligent on-line calibration system, the frame format of the data that transmit by described CAN bus is 8 bytes, is followed successively by: frame head, command word, ID, four data bytes and check code.
Intelligent on-line calibration system of the present invention can be realized the on-line proving of system, does not promptly need the dismounting monitoring equipment, has eliminated the harm that disassemblerassembler causes equipment under test fully.In addition, intelligent on-line calibration system of the present invention can also be realized operating in a key, can disposablely carry out comprehensive, systematic demarcation to equipment under test.On operating level, the present invention has simplified the operation of system calibrating, and the system self-healing function is provided, and has satisfied the requirement of the strong intelligent grid of unification that intelligent grid proposed.
Intelligent on-line calibration system of the present invention is a real key calibration system.In like product, be in the status of clear ahead.
Should be appreciated that the above generality of the present invention is described and the following detailed description all is exemplary and explanat, and be intended to the further explanation that the invention provides for as claimed in claim.
Description of drawings
Comprise that accompanying drawing is for providing the present invention further to be understood, they are included and are constituted the application's a part, and accompanying drawing shows embodiments of the invention, and play the effect of explaining the principle of the invention with this instructions.In the accompanying drawing:
Fig. 1 shows the schematic block diagram of the critical piece of intelligent on-line calibration system of the present invention.
Fig. 2 shows the demarcation process flow diagram of intelligent on-line calibration system of the present invention.
Fig. 3 shows the frame format of demarcating assembly and being demarcated the Frame that transmits by the CAN bus between the assembly.
Embodiment
Now with embodiments of the present invention will be described by referring to the drawings in detail.
Fig. 1 shows the schematic block diagram of the critical piece of intelligent on-line calibration system of the present invention.Intelligent on-line calibration system 100 of the present invention constitutes by demarcating assembly and being demarcated assembly at least.In Fig. 1, this demarcation assembly comprises ARM (Advanced RISC Machines) processor 111, pressure transducer 112, dew point transducer 113, temperature sensor 114.Particularly, in preferred embodiment shown in Figure 1, between pressure transducer 112 and arm processor 111, also be provided with an amplifying circuit 115 and analog to digital conversion (A/D) circuit 116.Accordingly, being demarcated assembly comprises flush bonding processor 101, pressure transducer 102, dew point transducer 103, temperature sensor 104.Particularly, in a preferred embodiment, between pressure transducer 102 and flush bonding processor 101, also be provided with an amplifying circuit 105 and analog to digital conversion (A/D) circuit 106.This demarcation assembly is demarcated assembly with the CAN bus between the flush bonding processor 101 with quilt by arm processor 111 and is connected.Certainly, the present invention is not limited to this specific CAN bus, also can adopt other known in the industry communication link forms and can not influence enforcement of the present invention.
Demarcated assembly and be used to carry out real time on-line monitoring.According to a preferred embodiment of the invention, by pressure, dew point and temperature sensor 102-104 (wherein, pressure precision is that 1 grade, dew point are that positive and negative 3 degree, temperature are positive and negative 1 degree).These three kinds of sensors all link to each other with the equipment under test gas circuit, the numerical value of the pressure that collects, dew point, temperature is aggregate to flush bonding processor 101, send to server end through another CAN bus (not shown) then, server end can send client with Monitoring Data through Ethernet and use for monitoring in real time.
At the foregoing description, demarcate assembly and adopt precision to be higher than three kinds of sensor 112-114 (wherein, pressure precision is that 0.5 grade, dew point are that positive and negative 2 degree, temperature are 0.5 degree) of the sensor 102-104.The air path part that the same connection of these sensors 112-114 communicates is so that gather respectively three kinds of different parameters.These parameters are sent to by the demarcation assembly through CAN bus shown in Figure 1 after arm processor 111 gathers.Therefore, the processor of being demarcated assembly can receive from demarcating the parameter that assembly sends, and carries out calibration process then, realizes the artificial intelligence demarcation.
Utilize intelligent online scaling system shown in Figure 1 to carry out the operating process of auto-scaling below with reference to Fig. 2 detailed description.
In the calibration system side, as shown in Figure 2, when the user starts a key Intelligent Calibration (step 201), arm processor will send instruction (step 202) to sensor 112-114, each processor 112-114 gathers first group of parameter (step 203) of pressure, dew point and temperature respectively, this first group of parameter needs to check and approve (step 205) through demarcating license confirmation after involving anti-interference process (step 204) after filtration, is sent to by calibration system (step 206) through CAN bus shown in Figure 1 then.
By the calibration system side, as shown in Figure 2, described flush bonding processor 101 by calibration system at first receives the first group of parameter (step 207) that transmits through the CAN bus.Preferably, need earlier the first group of parameter that is received to be carried out accuracy and judge (step 208).Then, second group of parameter that above-mentioned first group of parameter gathered with pressure transducer 102, dew point transducer 103 and temperature sensor 104 compares (step 209) one by one.Adopt intelligent algorithm that it is revised at different sensors, promptly demarcate (step 210).
Preferably, the present invention further provides a step of checking once more.Promptly, after above-mentioned steps 210, whether the present invention need judge through calibrated sensor can reach predetermined degree of accuracy, if still do not reach this predetermined degree of accuracy, this can send the request of demarcation to re-execute above-mentioned steps 202-210 once more to calibration system.On the contrary, if can reach predetermined degree of accuracy, then demarcate action and be finished through calibrated sensor.The operational example of the above-mentioned degree of accuracy that judges whether to reach predetermined compares with above-mentioned first group of parameter then again as being to use through calibrated three sensor 102-104 acquisition parameter again, with the error of judging them whether less than preset value.
According to a further aspect in the invention, the frame format of the data that transmit by CAN bus shown in Figure 1 is preferably 8 bytes, is followed successively by: frame head, command word, ID, four data bytes and check code, as shown in Figure 3.
Below will briefly introduce the software and hardware structure that adopts a specific products of the present invention.This product adopts ARM microprocessor LPC2119, this unit is a 32-bit microprocessor, its characteristics are: (1) LPC2119 is based on 16/32 arm7tdmi-stm cpu that supports real-time simulation and tracking, and has the high speed flash storer that 128kb embeds.The memory interface of 128 bit widths and unique accelerating structure can move 32 codes under maximum clock speed.Have the application of strict control can use 16 thumb patterns that code size is reduced to code size and surpass 30%, and the loss of performance is very little.Carry out pipelining, embedded ice is provided logic, breakpoint and debug point on the supporting pieces have advanced software development and debugging enironment; (2) LPC2119 has very little 64 pin encapsulation, extremely low power consumption, a plurality of 32 bit timing devices, 4 tunnel 10 adc, 2 road can, pwm passage, a plurality of serial line interface, comprise 2 16c550 industrial standard uart, high speed i2c interface (400khz) and 2 spi interfaces, 46 gpio and 9 external interrupt nearly; (3) inner integrated 2 the can controllers of LPC2119, each can controller all has similar register architecture to independent can controller sja1000.Its main difference is that length is limited on the programming operation of identifier receiving filtration, is not described further here; (4) LPC2119 possesses: the message transmission rate on the single bus is up to 1mb/s; 32 bit registers and ram visit; Compatible can2.0b, the iso11898-1 standard; The overall situation is checked and accepted wave filter can discern all 11 and 29 bit identifiers; Check and accept wave filter and provide full can-style automatic reception for the standard identifier of selecting.
The can interface section of this product comprises lpc2119 (built-in can controller), photoelectrical coupler and bus transceiver.The can bus is followed the master pattern of iso, is divided into data link layer and Physical layer.On engineering, realize by can controller and transceiver usually.Transceiver is selected the tja1050 high-speed transceiver of philips company, and it meets the iso11898 standard.The can controller is mainly finished the communication protocol of can, the filtration of the assembling of realization message and fractionation, reception information and verification etc.Transceiver tja1050 then is the physical connection that realizes can controller and communication line, improves the driving force and the reliability of can bus.
For the antijamming capability of further raising system, lpc2119 pin tx1, rx1 directly do not link to each other with transceiver tja1050, but link to each other with tja1050 by behind the high speed photo coupling 6n137.Adopt isolated form dc/dc module to power in the circuit to transceiver circuit.The b0505s-1w that the dc/dc module adopts gold to rise sun decides the voltage input and isolates the single output type dc/dc of non-voltage stabilizing module, isolation voltage 〉=1000vdc.So just can realize the electrical isolation of each contact on the bus well,, improve the stability and the security of contact though this part circuit has increased the complicacy of contact.
Certain safety and interference protection measure have also been adopted in the interface section of tja1050 and can bus.Between canh and can1 and the ground two little electric capacity ch in parallel and cl on can the filtering bus high frequency interference and possess certain anti-electromagnetic radiation ability.Capacitance must be by the quantity of node and baud rate decision, and when the output stage impedance of tja1050 approximately is 20, it is 500kbit/s that bus system has 10 node speeds, and then the value of electric capacity should not surpass 470pf.In addition between two can bus incoming ends and ground respectively reversal connection a protection diode.When the can bus had higher negative voltage, the short circuit of diode can be played certain overvoltage protection effect.According to the characteristic of tja1050, the can terminal resistance has used the division terminal among the design, and promptly two of the bus end node terminal resistances all are divided into the resistance of two equivalences, replaces one 120 resistance with two 60 resistance, can effectively reduce radiation like this.Because used the emc of division terminal tja1050, performance is optimized and can not produces chokes.
Aspect software, the software debugging environment of this product adopts the keil uvision 3 of keil company, by the ulink artificial debugging.The software design key component is to write the driver of can controller (in lpc2119 inside).Master routine only needs to realize by the interface that call driver provides the reception and the transmission of data.The can controller driver comprises four partial contents: the transmission of the initialization of can controller, the reception of message, message and bus abnormality processing.
The initialization of can controller among the lpc2119
Whether system can normally work, and the design of initialize routine is a key.Must carry out careful and comprehensively consideration to the content that writes each register, otherwise system can't normally move.The can initialization mainly is the messaging parameter that can is set, and promptly by the register in the can controller is provided with, thereby determines the working method etc. of can controller.The initialization of can controller is similar to independent can controller sja1000 initialization procedure among the lpc2119.The operation of initialization can controller comprises: hardware-enabled, configuration pin connection, software reset, bus baud rate, configuration mode register, configure interrupt working method are set, configuration is checked and accepted the wave filter working method, is started can etc.It is a difficult point that the bus baud rate is set, and the baud rate of all can nodes is wanted identical ability operate as normal, note correctly disposing vpbdiv and pll register.
The reception of can message
Interrupt mode is adopted in the reception of can message.Vectorial interruptable controller (vic) has 32 interrupt request inputs in the arm7tdmi core processor, its programming can be divided into 3 classes: fiq, vectorial irq and scalar irq.The lpc2119 chip has 24 interrupt sources, and peripheral hardware all has an interrupt line to be connected to vectorial interruptable controller in each sheet, and wherein the vic channel number of can controller is 19-23.The interrupt source of considering the can controller is more, and the author adopts scalar to interrupt.Do not caused loss of data, the author to define send buffer for fear of the data that receive because in time handle, adopt loop buffer structure (being similar to 64 byte fifo loop buffers in the sja1000can controller) to receive data.Round Buffer Area in conjunction with definition is carried out the reception program design of can message.
The transmission of can message
The can controller is in order to improve the efficient that mass data sends among the lpc2119, and each can controller is furnished with three and independently sends buffer register, and this point and sja1000 are different.Therefore compare with the router of sja1000 and want relative complex.Because be that actual conditions according to buffer zone selectively write three to data and send one of buffering when sending.The state of each buffer zone is learnt by inquiry cansr.So in the design router, will judge earlier which buffering is idle, then data are being write into buffer zone, start transmission.
Can bus abnormality processing interrupt routine
The can controller comes the mistake that takes place on the can bus is handled according to the can2.0 standard.Under the situation of bus generation catastrophic failure, the can node might break away from bus, and this moment, following register was set: the rm position of the bs position of cansr, the bei of canir and ei position and canmod.Software next step must zero setting rm position.Send 128th incident of error counter with countdown (11 continuous recessive positions), bus release conditions software can be monitored the situation of counter counts down by reading the tx error counter.Some other is not that very grave error generally can not cause bus error, even do not handle can not produce what fatal error yet, if in order to improve Interrupt Process speed, and can be according to actual conditions cutting interrupt service routine.
Those skilled in the art can be obvious, can carry out various modifications and variations and without departing from the spirit and scope of the present invention to above-mentioned exemplary embodiment of the present invention.Therefore, be intended to that the present invention is covered and drop in appended claims and the equivalence techniques scheme scope thereof to modification of the present invention and modification.
Claims (6)
1. an intelligent on-line calibration system comprises and demarcates assembly and demarcated assembly,
Described demarcation assembly comprises:
First processor; And
First pressure transducer that links to each other with described first processor, first dew point transducer and first temperature sensor respectively;
Describedly demarcated assembly and comprised:
Second processor; And
Second pressure transducer, second dew point transducer and second temperature sensor that links to each other with described second processor respectively;
Wherein, described first processor and described second processor interconnect through a communication link;
Wherein, first group of parameter of described demarcation assembly automatic pressure acquisition, dew point and temperature, and described first group of parameter is sent to described by the demarcation assembly, described second group of parameter of being demarcated described first group of parameter that assembly will obtain from described demarcation assembly and pressure, dew point and the temperature of self collection compares respectively, according to the result of described comparison described each sensor by calibration system demarcated respectively.
2. intelligent on-line calibration system as claimed in claim 1 is characterized in that, described communication link is the CAN bus.
3. intelligent on-line calibration system as claimed in claim 1 is characterized in that, described first pressure transducer is connected to described first processor through an amplifying circuit and an analog to digital conversion circuit.
4. intelligent on-line calibration system as claimed in claim 1 is characterized in that, described second pressure transducer is connected to described second processor through an amplifying circuit and an analog to digital conversion circuit.
5. intelligent on-line calibration system as claimed in claim 1, it is characterized in that the precision of described first pressure transducer, first dew point transducer and first temperature sensor is higher than the precision of described second pressure transducer, second dew point transducer and second temperature sensor respectively.
6. intelligent on-line calibration system as claimed in claim 2 is characterized in that, the frame format of the data that transmit by described CAN bus is 8 bytes, is followed successively by: frame head, command word, ID, four data bytes and check code.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403994A (en) * | 2011-12-20 | 2012-04-04 | 基康仪器(北京)有限公司 | Device and method for realizing one-key startup and shutdown functions of portable instrument |
| CN102494841A (en) * | 2011-12-26 | 2012-06-13 | 潍柴动力股份有限公司 | Pressure sensor calibration system |
| CN102507649A (en) * | 2011-12-29 | 2012-06-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
| CN102967393A (en) * | 2012-11-02 | 2013-03-13 | 广东电网公司电力科学研究院 | Supercritical unit boiler separator outlet temperature on-line calibration method |
| CN103091366A (en) * | 2012-12-20 | 2013-05-08 | 同济大学 | Dewpoint calibration testing method used under complicated environments |
| CN104102607A (en) * | 2014-07-17 | 2014-10-15 | 航天科工深圳（集团）有限公司 | CAN (controlled area network) bus driving method and system based on VxWorks operating system environment |
| CN104280179A (en) * | 2013-07-03 | 2015-01-14 | 奔腾电器（上海）有限公司 | Pressure detection system and electric pressure cooking utensil |
| CN106017727A (en) * | 2016-05-16 | 2016-10-12 | 合肥市芯海电子科技有限公司 | Multi-chip temperature testing and calibrating system and method |
| CN106895868A (en) * | 2017-04-19 | 2017-06-27 | 北京同力数矿科技有限公司 | A kind of internet of things sensors equipment batch caliberating device |
| CN107764861A (en) * | 2017-09-30 | 2018-03-06 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of bearing calibration of highlands dew point hygrometer |
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| CN110440982A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of full-automatic control system for the calibration of air compressor machine sensor parameters |
| CN110440983A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of control method for fully automatic for the calibration of air compressor machine sensor parameters |
| CN111198205A (en) * | 2018-11-20 | 2020-05-26 | 诚田自动化仪表（上海）有限公司 | Dew point sensor's test system |
| CN114136499A (en) * | 2021-12-02 | 2022-03-04 | 广东乐心医疗电子股份有限公司 | Temperature calibration method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065866A (en) * | 1996-04-02 | 2000-05-23 | Braun Aktiengesellschaft | Method of calibrating a radiation thermometer |
| CN101078656A (en) * | 2006-05-19 | 2007-11-28 | 科维迪恩股份公司 | Thermometer calibration |
| CN201000383Y (en) * | 2007-01-09 | 2008-01-02 | 上海工业自动化仪表研究所 | Intelligent pressure difference sensor multi-point regulating device |
| CN101556192A (en) * | 2008-04-11 | 2009-10-14 | 谢明春 | Automatic temperature calibration apparatus |
| CN201421448Y (en) * | 2009-05-08 | 2010-03-10 | 上海莫克电子技术有限公司 | Online SF6 gas monitor for combined electrical apparatus |
-
2010
- 2010-05-06 CN CN201010167914A patent/CN101839790A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065866A (en) * | 1996-04-02 | 2000-05-23 | Braun Aktiengesellschaft | Method of calibrating a radiation thermometer |
| CN101078656A (en) * | 2006-05-19 | 2007-11-28 | 科维迪恩股份公司 | Thermometer calibration |
| CN201000383Y (en) * | 2007-01-09 | 2008-01-02 | 上海工业自动化仪表研究所 | Intelligent pressure difference sensor multi-point regulating device |
| CN101556192A (en) * | 2008-04-11 | 2009-10-14 | 谢明春 | Automatic temperature calibration apparatus |
| CN201421448Y (en) * | 2009-05-08 | 2010-03-10 | 上海莫克电子技术有限公司 | Online SF6 gas monitor for combined electrical apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 周少敏等: "传感器在线校准系统", 《电测与仪表》, 30 September 1993 (1993-09-30) * |
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| CN102494841A (en) * | 2011-12-26 | 2012-06-13 | 潍柴动力股份有限公司 | Pressure sensor calibration system |
| CN102507649A (en) * | 2011-12-29 | 2012-06-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
| CN102507649B (en) * | 2011-12-29 | 2013-03-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
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| CN106017727A (en) * | 2016-05-16 | 2016-10-12 | 合肥市芯海电子科技有限公司 | Multi-chip temperature testing and calibrating system and method |
| CN106017727B (en) * | 2016-05-16 | 2018-11-06 | 合肥市芯海电子科技有限公司 | A kind of multi-chip temperature test and calibration system and method |
| CN106895868A (en) * | 2017-04-19 | 2017-06-27 | 北京同力数矿科技有限公司 | A kind of internet of things sensors equipment batch caliberating device |
| CN107764861A (en) * | 2017-09-30 | 2018-03-06 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of bearing calibration of highlands dew point hygrometer |
| CN111198205A (en) * | 2018-11-20 | 2020-05-26 | 诚田自动化仪表（上海）有限公司 | Dew point sensor's test system |
| CN110231121A (en) * | 2018-12-18 | 2019-09-13 | 贵州航天计量测试技术研究所 | A kind of oil well logging sensor comprehensive detection system and method |
| CN109827610A (en) * | 2019-03-12 | 2019-05-31 | 百度在线网络技术（北京）有限公司 | Method and apparatus for check sensor fusion results |
| CN109827610B (en) * | 2019-03-12 | 2021-05-14 | 百度在线网络技术（北京）有限公司 | Method and device for verifying sensor fusion result |
| CN110440983A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of control method for fully automatic for the calibration of air compressor machine sensor parameters |
| CN110440982A (en) * | 2019-09-16 | 2019-11-12 | 大唐半导体科技有限公司 | A kind of full-automatic control system for the calibration of air compressor machine sensor parameters |
| CN114136499A (en) * | 2021-12-02 | 2022-03-04 | 广东乐心医疗电子股份有限公司 | Temperature calibration method and system |
| CN114136499B (en) * | 2021-12-02 | 2023-07-18 | 广东乐心医疗电子股份有限公司 | Temperature calibration method and system |
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Application publication date: 20100922 |