CN111562035A - Quick calibration device and calibration method for exhaust temperature sensor at high temperature - Google Patents
Quick calibration device and calibration method for exhaust temperature sensor at high temperature Download PDFInfo
- Publication number
- CN111562035A CN111562035A CN202010280168.8A CN202010280168A CN111562035A CN 111562035 A CN111562035 A CN 111562035A CN 202010280168 A CN202010280168 A CN 202010280168A CN 111562035 A CN111562035 A CN 111562035A
- Authority
- CN
- China
- Prior art keywords
- temperature sensor
- circuit
- measuring circuit
- product
- standard sample
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
Abstract
The invention relates to a device for quickly verifying an exhaust temperature sensor at high temperature, which comprises a measuring circuit, a programming controller and a display screen, wherein the measuring circuit is formed by connecting a plurality of branch circuits in series, the input end of the measuring circuit is connected with an input circuit of a dry-type heating furnace, the output end of the measuring circuit is connected with an output circuit of the dry-type heating furnace, voltage stabilizing resistors are connected in series on the circuits of all the branches of the measuring circuit, a standard sample is installed on the circuit of one branch of the measuring circuit, a product to be tested is installed on the circuits of other branches, an A/D converter is arranged in the programming controller, a circuit connected with the A/D converter is arranged on the circuit of each branch of the measuring circuit, and the input end of the programming controller is electrically connected with the display screen. The invention adopts a dynamic detection method in a certain temperature range, reduces the waiting time for reaching the temperature point and greatly improves the detection efficiency of the temperature sensor.
Description
Technical Field
The invention relates to the technical field of automotive electronics, in particular to a device for quickly checking an exhaust temperature sensor of automotive electronics at a high temperature.
Background
In the production process of the exhaust temperature sensor, after the sensor is produced, a high temperature point of the sensor needs to be checked to determine whether the accuracy meets the requirement, generally, the existing detection and check method is to insert a product into a check hole of a dry-type furnace, simultaneously place a standard thermocouple, place the thermocouple with the same depth as a measured temperature sensor, set the dry-type furnace at a certain temperature point, convert the output resistance of the measurement sensor into the temperature after the dry-type furnace is heated to the temperature point and stabilized, compare the temperature with a standard temperature value measured by the thermocouple, and determine whether the accuracy of the measured sensor meets the requirement.
Due to the existence of heating inertia of the dry furnace, if an accurate and stable temperature point is to be obtained, PID control temperature heating is required, so that the heating is slow when the temperature point is close to a temperature control point, and the temperature is required to be heated from 695 ℃ to 700 ℃ for about 10 minutes at a set temperature of 700 ℃.
Disclosure of Invention
The invention aims to provide a device and a method for quickly calibrating an exhaust temperature sensor at high temperature, which are used for dynamically detecting in a certain temperature range so as to solve the problems in the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a high-temperature quick calibration device for an exhaust temperature sensor comprises a measuring circuit, a programming controller and a display screen, wherein the measuring circuit is formed by connecting a plurality of branch circuits in series, the input end of the measuring circuit is connected with an input circuit of a dry-type heating furnace, the output end of the measuring circuit is connected with an output circuit of the dry-type heating furnace, voltage stabilizing resistors are connected in series on the circuits of the branches of the measuring circuit, a standard sample piece is installed on the circuit of one branch of the measuring circuit, a tested product is installed on the circuits of other branches, the standard sample piece is an exhaust temperature sensor standard sample piece, the tested product is a product to be detected by the exhaust temperature sensor, an A/D converter is arranged in the programming controller, and the circuits of the branches of the measuring circuit are provided with circuits connected with the A/D converter, the input end of the programming controller is electrically connected with the display screen.
In the above scheme, the programming controller is a programmable logic controller.
In the above scheme, the programming controller is a single chip microcomputer.
In the above scheme, the programming controller is a central control machine.
In the scheme, the display screen is a touch screen plate, and the storage module is arranged in the display screen.
A method for quickly checking an exhaust temperature sensor at high temperature comprises the following steps:
s1, calibrating the same product sensor to be used as a standard sample;
s2, placing the tested product and the standard sample piece in a dry-type heating furnace together for heating, wherein the tested product and the standard sample piece are in the same temperature field, and ensuring that the temperature environments of the tested product and the standard sample piece are consistent;
s3, converting the resistance value of the temperature sensor of the standard sample piece to be tested and the resistance value of the temperature sensor of the product to be tested into voltage values through a measuring circuit, and inputting the voltage values to the corresponding input ends of the A/D converter of the programming controller;
s4, when the heating temperature of the dry heating furnace is close to the set temperature, the programming controller starts to carry out A/D converter on the voltage of the input end and carries out operation processing on the acquired data, the measured voltage value of the temperature sensor of the standard sample piece is compared with the voltage value of the temperature sensor of the measured product, and whether the output precision of the measured product meets the requirement or not is judged;
s5, displaying the measurement result on a display screen, and facilitating the classification of the detected qualified products and unqualified products of the temperature sensor by operators.
Compared with the prior art, the invention has the beneficial effects that: the scheme adopts the dynamic detection judgment when the temperature is close to the set point, the sample temperature does not need to be detected at a certain temperature point, the adjustment time and the stable waiting time required by the temperature of the dry heating furnace when reaching the temperature point are reduced, the detection time of product parts is greatly shortened, and the product detection production efficiency is improved. Meanwhile, because the PLC and other programming controllers are adopted for automatic detection and calculation, comparison is carried out, and results are displayed, and misjudgment possibly brought by manual judgment is effectively avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
reference numbers in the figures: 1-a measurement circuit; 11-voltage stabilizing resistor; 12-standard sample; 13-the product to be tested; 2-programming a controller; 21-A/D converter; and 3, displaying the screen.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the device for quickly verifying the exhaust temperature sensor at high temperature comprises a measuring circuit 1, a programming controller 2 and a display screen 3, wherein the measuring circuit 1 is formed by connecting a plurality of branch circuits in series, and each branch circuit is powered by a 5V voltage-stabilized power supply. The input end of the measuring circuit 1 is connected with the input circuit of the dry-type heating furnace, the output end of the measuring circuit 1 is connected with the output circuit of the dry-type heating furnace, voltage stabilizing resistors 11 are connected in series on the circuits of all the branches of the measuring circuit 1, and the resistance value of each voltage stabilizing resistor 11 is 1000 omega +/-0.1%.
The circuit of one branch of the measuring circuit 1 is connected with a standard sample 12 in series through a wiring harness connector, the circuits of other branches are connected with a measured product 13 in series through wiring harness connectors, the standard sample 12 is a standard sample of an exhaust temperature sensor, and the measured product 13 is a product to be detected by the exhaust temperature sensor. An A/D converter 21 is arranged in the programming controller 2, and circuits connected with the A/D converter 21 are arranged on circuits of each branch of the measuring circuit 1 and are used for inputting the circuits into the programming controller 2 for storage and analysis.
When the device works, the voltage values of the temperature sensor to be measured (the product 13 to be measured) and the standard sample 12 are respectively measured, and whether the difference value between the two output voltage values meets the technical requirement is judged through comparison and calculation, so that whether the performance of the temperature sensor to be measured (the product 13 to be measured) is qualified is judged.
Input and the display screen 3 electric connection of programming controller 2, look over for better demonstration and operation, display screen 3 is the touch screen version, conveniently opens through manual touch and sees out exhaust temperature sensor's relevant information, and the inside storage module that is equipped with of display screen 3, storage module can be hardboard or SD memory card, conveniently looks over historical information.
In the above solution, in one embodiment, the programming controller 2 is a programmable logic controller, that is: PLC can adopt a PLC module with the model number of Mitsubishi FX3U-64MT, and can also adopt FX3U-4 AD.
In the above scheme, in one embodiment, the programming controller 2 is a single chip microcomputer, and the model may be AT89S5224PU 1401A.
In the above-mentioned scheme, in one embodiment, the programming controller 2 is a central controller, and can adopt the host model IPC-7132/AIMB-701G2/I5-2400/8G/1T of the porphyry industrial computer.
In this patent application, a thermocouple may be selected as a reference, and the temperature sensor may be replaced by a thermocouple. The reason the standard sample 12 was chosen for reference, not the thermocouple, in the present application is:
1. the probe shapes, structures and the like of the standard sample piece 12 and the product to be detected 13 are consistent, so that the contact areas of the standard sample piece and the product to be detected are the same when the standard sample piece and the product to be detected sense temperature, and the reaction time is basically consistent.
2. The standard sample 12 can be directly connected to the working circuit, the output voltage value of the standard sample 12 is directly collected and directly compared with the voltage value of the product 13 to be measured, and the calculation error caused by formula calculation is reduced. Because the thermocouple directly measures the temperature and converts the temperature signal into a thermal electromotive force signal, the thermal electromotive force signal is converted into the temperature of the measured medium by an electric instrument (a secondary instrument).
According to the scheme, the method for quickly checking the exhaust temperature sensor at the high temperature is implemented as follows:
s1, calibrating the same product sensor to be used as a standard sample 12;
s2, placing the tested product 13 and the standard sample 12 in a dry-type heating furnace together for heating, wherein the two are in the same temperature field, and ensuring that the temperature environments of the two are consistent;
s3, converting the resistance value of the temperature sensor of the measured standard sample 12 and the resistance value of the temperature sensor of the measured product 13 into voltage values through a measuring circuit, and inputting the voltage values to the corresponding input ends of the A/D converter of the programming controller 2 (such as PLC);
s4, when the heating temperature of the dry heating furnace is close to the set temperature, namely when the heating temperature of the dry heating furnace is within a certain degree of the set temperature (for example, within 5 ℃), the programming controller 2 (for example, PLC) starts to carry out A/D converter on the voltage of the input end and carries out operation processing on the acquired data, compares the measured voltage value of the temperature sensor of the standard sample 12 with the voltage value of the temperature sensor of the measured product 13, and judges whether the output precision of the measured product meets the requirement, so that the temperature of the dry heating furnace does not need to stay at a stable set temperature point;
and S5, displaying the measurement result on the touch screen, so that an operator can conveniently classify the qualified products and the unqualified products of the temperature sensor.
The scheme adopts the dynamic detection judgment when the temperature is close to the set point, so that the temperature of the sample does not need to be detected at a certain temperature point, the adjustment time and the stable waiting time required by the temperature of the dry heating furnace when reaching the temperature point are reduced, the detection time of the product parts is greatly shortened, and the product detection production efficiency is improved. Meanwhile, because the PLC and other programming controllers are adopted for automatic detection and calculation, comparison is carried out, and results are displayed, and misjudgment possibly brought by manual judgment is effectively avoided.
In order to overcome the problem of low efficiency when the conventional method is adopted for detection, the scheme adopts a method for carrying out dynamic detection in a certain temperature range, reduces the waiting time required for reaching a temperature point, and greatly improves the detection efficiency of the temperature sensor.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a quick calibration equipment under exhaust temperature sensor high temperature which characterized in that: including measuring circuit (1), programming controller (2) and display screen (3), measuring circuit (1) is established ties by a plurality of branch circuits and forms, the input circuit of dry-type heating furnace is connected to the input of measuring circuit (1), the output circuit of dry-type heating furnace is connected to the output of measuring circuit (1), all establish ties on the circuit of each branch of measuring circuit (1) and have voltage stabilization resistance (11), install standard sample (12) on the circuit of one of them branch of measuring circuit (1), install on the circuit of other each branch and be surveyed product (13), standard sample (12) are exhaust temperature sensor standard sample, it waits to detect the product for exhaust temperature sensor to be surveyed product (13), programming controller (2) inside is equipped with AD converter (21), all be equipped with the connection on the circuit of each branch of measuring circuit (1A/D converter (21) The input end of the programming controller (2) is electrically connected with the display screen (3).
2. The device for rapidly verifying the exhaust temperature sensor at high temperature according to claim 1, wherein: the programming controller (2) is a programmable logic controller.
3. The device for rapidly verifying the exhaust temperature sensor at high temperature according to claim 1, wherein: the programming controller (2) is a singlechip.
4. The device for rapidly verifying the exhaust temperature sensor at high temperature according to claim 1, wherein: the programming controller (2) is a central control machine.
5. The device for rapidly verifying the exhaust temperature sensor at high temperature according to claim 1, wherein: the display screen (3) is of a touch screen type, and a storage module is arranged inside the display screen (3).
6. The method for quickly verifying the exhaust gas temperature sensor at the high temperature according to claim 1, is characterized by comprising the following steps of:
s1, calibrating the same product sensor to be used as a standard sample;
s2, placing the tested product and the standard sample piece in a dry-type heating furnace together for heating, wherein the tested product and the standard sample piece are in the same temperature field, and ensuring that the temperature environments of the tested product and the standard sample piece are consistent;
s3, converting the resistance value of the temperature sensor of the standard sample piece to be tested and the resistance value of the temperature sensor of the product to be tested into voltage values through a measuring circuit, and inputting the voltage values to the corresponding input ends of the A/D converter of the programming controller;
s4, when the heating temperature of the dry heating furnace is close to the set temperature, the programming controller starts to carry out A/D converter on the voltage of the input end and carries out operation processing on the acquired data, the measured voltage value of the temperature sensor of the standard sample piece is compared with the voltage value of the temperature sensor of the measured product, and whether the output precision of the measured product meets the requirement or not is judged;
s5, displaying the measurement result on a display screen, and facilitating the classification of the detected qualified products and unqualified products of the temperature sensor by operators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280168.8A CN111562035A (en) | 2020-04-10 | 2020-04-10 | Quick calibration device and calibration method for exhaust temperature sensor at high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280168.8A CN111562035A (en) | 2020-04-10 | 2020-04-10 | Quick calibration device and calibration method for exhaust temperature sensor at high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111562035A true CN111562035A (en) | 2020-08-21 |
Family
ID=72070462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010280168.8A Pending CN111562035A (en) | 2020-04-10 | 2020-04-10 | Quick calibration device and calibration method for exhaust temperature sensor at high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111562035A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567010A (en) * | 2021-08-17 | 2021-10-29 | 安徽江淮汽车集团股份有限公司 | Engine temperature sensor test system and test method |
| CN114136495A (en) * | 2021-10-15 | 2022-03-04 | 浙江加文汽车零部件有限公司 | Quality detection equipment of temperature sensor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207413A (en) * | 2011-03-18 | 2011-10-05 | 上海贝洱热系统有限公司 | Detection circuit and method of temperature sensor |
| CN205404004U (en) * | 2016-03-11 | 2016-07-27 | 西华大学 | Automobile -used temperature sensor automatic test system |
| CN105890809A (en) * | 2016-05-24 | 2016-08-24 | 首凯汽车零部件（江苏）有限公司 | Precision detecting system of motor vehicle emission temperature sensor |
| CN206019877U (en) * | 2016-08-31 | 2017-03-15 | 芜湖天宇科技开发有限公司 | Temperature sensor multichannel resistance monitor station |
| CN106568535A (en) * | 2016-10-10 | 2017-04-19 | 首凯汽车零部件（江苏）有限公司 | Precision detection system for motor vehicle exhaust emission temperature sensors |
| CN107991003A (en) * | 2017-11-27 | 2018-05-04 | 天津航空机电有限公司 | Test method, device, equipment and the storage medium of temperature sensor time constant |
| CN207832349U (en) * | 2017-12-30 | 2018-09-07 | 西安市地下铁道有限责任公司 | A kind of temperature controller of dry type transformer checker |
| CN109799009A (en) * | 2019-03-06 | 2019-05-24 | 上海市计量测试技术研究院 | A kind of remote temperature calibration method for vaccine cold chain system |
| CN110398304A (en) * | 2018-04-25 | 2019-11-01 | 比亚迪股份有限公司 | A kind of temperature sensor batch testing system |
| CN110954246A (en) * | 2019-02-27 | 2020-04-03 | 南京瑞贻电子科技有限公司 | Time domain calibration method for dynamic temperature measurement |
-
2020
- 2020-04-10 CN CN202010280168.8A patent/CN111562035A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207413A (en) * | 2011-03-18 | 2011-10-05 | 上海贝洱热系统有限公司 | Detection circuit and method of temperature sensor |
| CN205404004U (en) * | 2016-03-11 | 2016-07-27 | 西华大学 | Automobile -used temperature sensor automatic test system |
| CN105890809A (en) * | 2016-05-24 | 2016-08-24 | 首凯汽车零部件（江苏）有限公司 | Precision detecting system of motor vehicle emission temperature sensor |
| CN206019877U (en) * | 2016-08-31 | 2017-03-15 | 芜湖天宇科技开发有限公司 | Temperature sensor multichannel resistance monitor station |
| CN106568535A (en) * | 2016-10-10 | 2017-04-19 | 首凯汽车零部件（江苏）有限公司 | Precision detection system for motor vehicle exhaust emission temperature sensors |
| CN107991003A (en) * | 2017-11-27 | 2018-05-04 | 天津航空机电有限公司 | Test method, device, equipment and the storage medium of temperature sensor time constant |
| CN207832349U (en) * | 2017-12-30 | 2018-09-07 | 西安市地下铁道有限责任公司 | A kind of temperature controller of dry type transformer checker |
| CN110398304A (en) * | 2018-04-25 | 2019-11-01 | 比亚迪股份有限公司 | A kind of temperature sensor batch testing system |
| CN110954246A (en) * | 2019-02-27 | 2020-04-03 | 南京瑞贻电子科技有限公司 | Time domain calibration method for dynamic temperature measurement |
| CN109799009A (en) * | 2019-03-06 | 2019-05-24 | 上海市计量测试技术研究院 | A kind of remote temperature calibration method for vaccine cold chain system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567010A (en) * | 2021-08-17 | 2021-10-29 | 安徽江淮汽车集团股份有限公司 | Engine temperature sensor test system and test method |
| CN114136495A (en) * | 2021-10-15 | 2022-03-04 | 浙江加文汽车零部件有限公司 | Quality detection equipment of temperature sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111562035A (en) | Quick calibration device and calibration method for exhaust temperature sensor at high temperature | |
| CN106679841A (en) | Temperature detecting device and temperature detecting method | |
| CN111238672B (en) | Superconducting tape dynamic temperature measurement method based on magnetic microscopy | |
| CN101545820A (en) | Comprehensive test-bed | |
| CN112556870A (en) | Method and system for measuring dynamic temperature of superconducting strip | |
| CN205482773U (en) | Full -automatic eddy current displacement sensor static characteristic test system | |
| CN107543574B (en) | Automatic detector for high-temperature aging test of airborne sensor and operation method | |
| CN114111873B (en) | Online calibration system and method for refrigerator detector | |
| CN109298378A (en) | A kind of automatic calibration of electric energy meter system multifunctional detection method and device | |
| CN108562813A (en) | A kind of test device of SiC Mosfet electrical properties | |
| CN211696907U (en) | DMU function test device | |
| CN212513375U (en) | Switch cabinet contact temperature measuring sensor detection platform based on controllable constant temperature platform | |
| CN111272384B (en) | Detection method and device for detecting flow resistance by pressure drop contrast | |
| CN102072990A (en) | Ageing detection device for laser | |
| CN102353467B (en) | System and method for verifying detection accuracy of internal core temperature of chip | |
| CN101762617B (en) | Thermal-stratification test and verification device containing insulating-layer panel body and method | |
| CN209311597U (en) | A kind of high-efficient electronic actuators handheld test calibration facility | |
| CN217156725U (en) | Multifunctional integrated circuit experiment test equipment | |
| CN215728475U (en) | BMS board testing arrangement and BMS board test system | |
| CN219737687U (en) | Chip aging test device and system | |
| CN220709578U (en) | Tester for temperature control box | |
| CN108917997B (en) | Adapting unit stress detecting system suitable for narrow and small space | |
| CN220270621U (en) | Multi-point infrared temperature detection device | |
| CN210400286U (en) | Standard substance strain test module | |
| CN213748896U (en) | Sensor test calibration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200821 |
|
| RJ01 | Rejection of invention patent application after publication |