CN204694378U - A kind of resistivity-temperature characteristics detector of thermistor - Google Patents
A kind of resistivity-temperature characteristics detector of thermistor Download PDFInfo
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- CN204694378U CN204694378U CN201520397343.6U CN201520397343U CN204694378U CN 204694378 U CN204694378 U CN 204694378U CN 201520397343 U CN201520397343 U CN 201520397343U CN 204694378 U CN204694378 U CN 204694378U
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Abstract
The utility model discloses a kind of resistivity-temperature characteristics detector of thermistor, comprise thermistor fixture, temperature-controlled box and controller, thermistor fixture, temperature-controlled box are all electrically connected with controller, and controller is connected with display device.Test cavity volume is provided with in described temperature-controlled box, thermistor fixture is arranged in test cavity volume, the surrounding sidewall of test cavity volume is provided with airflow hole, gas channel is provided with between the surrounding sidewall of test cavity volume and temperature-controlled box outer wall, airflow hole communicates with gas channel, the bottom of test cavity volume is provided with heating arrangement, and the below of heating arrangement is provided with fan assembly, is also provided with temperature sensor in test cavity volume.The utility model test is very convenient, and the degree of accuracy of test is high, does not need artificial participation, namely decreases testing cost, and improve the efficiency of test, market application foreground is wide, can be widely used in the temperature of thermistor product and resistance characteristic test.
Description
Technical field
The utility model relates to electric elements testing apparatus field, particularly a kind of resistivity-temperature characteristics detector of thermistor.
Background technology
Thermistor is a class of sensitive element, is divided into positive temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC) according to temperature coefficient difference.The typical feature of thermistor is to responsive to temperature, shows different resistance values at different temperature.Positive temperature coefficient thermistor (PTC) resistance value when temperature is higher is larger, and negative temperature coefficient thermistor (NTC) resistance value when temperature is higher is lower, and they belong to semiconductor devices.Due to this kind of characteristic of thermistor, therefore thermistor needs to measure its resistivity-temperature characteristics.
At present, the method of testing the resistivity-temperature characteristics of thermistor is traditionally, thermistor is put into the adjustable casing of temperature, the temperature value T then in the resistance apparatus measured resistance value R and casing of casing external application precision, is then depicted as R/T family curve by R and T in office software.But there is following shortcoming in this method of testing: the temperature in casing at short notice time cannot stablize on the temperature value preset, also have the resistance of test to be read by artificial, there is reading error, therefore cause the resistivity-temperature characteristics error of mensuration larger; Also have method of testing loaded down with trivial details, survey and need manually to participate in test, testing efficiency is very low.
Utility model content
For overcoming the deficiencies in the prior art and Problems existing, the utility model provides a kind of resistivity-temperature characteristics detector of thermistor, automatically can measure the resistivity-temperature characteristics of thermistor, and test result is accurate, and testing efficiency is high.
The utility model is achieved through the following technical solutions:
A resistivity-temperature characteristics detector for thermistor, comprises thermistor fixture, temperature-controlled box and controller, and thermistor fixture, temperature-controlled box are all electrically connected with controller, and controller is connected with display device.Test cavity volume is provided with in described temperature-controlled box, thermistor fixture is arranged in test cavity volume, the surrounding sidewall of test cavity volume is provided with airflow hole, gas channel is provided with between the surrounding sidewall of test cavity volume and temperature-controlled box outer wall, airflow hole communicates with gas channel, the bottom of test cavity volume is provided with heating arrangement, and the below of heating arrangement is provided with fan assembly, is also provided with temperature sensor in test cavity volume.
Described thermistor fixture comprises insulation cover, clamping apparatus disk and total cable, temperature-controlled box is provided with and the opening tested cavity volume and be communicated with, insulation cover and opening cooperatively interact, insulation cover is connected with clamping apparatus disk by column, clamping apparatus disk is provided with the chuck for fixing thermistor, chuck is provided with separated time, and separated time is connected with total cable, and total cable is connected with controller.
Described chuck is provided with multiple, is circumferentially evenly arranged on clamping apparatus disk, and each chuck is equipped with the separated time be connected with total cable.
Described clamping apparatus disk comprises the upper dish and lower wall that are parallel to each other, is provided with joint pin between upper dish and lower wall, and upper dish upper surface is provided with installation position, and chuck is installed on installation position.
Described installation position is provided with cable hole, and separated time extends to upper dish and lower wall from chuck through cable hole.
Described insulation cover is provided with cable hole, and total cable extends to insulation cover lower surface by cable hole from insulation cover upper surface, and the middle part of upper dish is provided with circular hole, and separated time extends to total cable between upper dish and lower wall through circular hole.
The shell of described chuck is ceramic material, and chuck is provided with the socket of clamping thermistor stitch, and the two ends of chuck are provided with mounting hole.
The end face of described insulation cover is provided with handle, and handle is provided with two, is symmetrically distributed in the both sides of insulation cover.
The utility model is provided with thermistor fixture, thermistor is fixed on thermistor fixture, thermistor fixture puts into test cavity volume, temperature in temperature-controlled box controllable testing cavity volume, resistance and the temperature of testing in cavity volume of the thermistor of test directly feed back to controller, controller directly can generate the resistance-temperature characteristic curve of thermistor, test very convenient, the degree of accuracy of test is high, do not need artificial participation, namely testing cost is decreased, improve the efficiency of test, market application foreground is wide, can be widely used in the temperature of thermistor product and resistance characteristic test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional structure schematic diagram of temperature-controlled box in the utility model;
Fig. 3 is the structural representation that in the utility model, thermistor fixture removes part chuck;
Fig. 4 is the structural representation of clamping apparatus disk and chuck in the utility model;
Fig. 5 is the structural representation of chuck in the utility model.
In figure: 1-thermistor fixture, 11-insulation cover, 12-clamping apparatus disk, the upper dish of 121-, 1211-cable hole, 1212-circular hole, 122-lower wall, 123-joint pin, 13-column, 14-chuck, 141-separated time, 142-socket, 143-mounting hole, the total cable of 15-, 16-handle, 2-temperature-controlled box, 21-tests cavity volume, 22-airflow hole, 23-gas channel, 24-heating arrangement, 25-fan assembly, 26-opening, 3-controller, 4-display device.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of resistivity-temperature characteristics detector of thermistor, comprises thermistor fixture 1, temperature-controlled box 2 and controller 3, and thermistor fixture 1, temperature-controlled box equal 2 is electrically connected with controller 3, and controller 3 is connected with display device 4.Test cavity volume 21 is provided with in temperature-controlled box 2, thermistor fixture 1 is arranged in test cavity volume 21, the surrounding sidewall of test cavity volume 21 is provided with airflow hole 22, gas channel 23 is provided with between the surrounding sidewall of test cavity volume 21 and temperature-controlled box outer wall, airflow hole 22 communicates with gas channel 23, and the bottom of test cavity volume 21 is provided with heating arrangement 24, and the below of heating arrangement 24 is provided with fan assembly 25, also temperature sensor is provided with, the temperature in temperature sensor Real-time Feedback test cavity volume 21 in test cavity volume 21.Heating arrangement 24 generates heat, hot gas is blown in test cavity volume 21 by fan assembly 25, make to reach temperature required in test cavity volume 21, hot gas arrives fan assembly 25 place by airflow hole 22 and gas channel 23, form hot gas cycle, make the temperature equalization in test cavity volume 21, stablize, improve the accuracy of test.
As shown in Figure 3 and Figure 4, thermistor fixture 1 comprises insulation cover 11, clamping apparatus disk 12 and total cable 15, temperature-controlled box 2 is provided with and the opening 26 tested cavity volume 21 and be communicated with, insulation cover 11 and opening 26 cooperatively interact, insulation cover 11 covers in opening 26, avoids the heat energy tested in cavity volume 21 to run off from opening 26.Insulation cover 11 is connected with clamping apparatus disk 12 by column 13, and clamping apparatus disk 12 is provided with the chuck 14 for fixing thermistor, and chuck 14 is provided with separated time 141, and separated time 141 is connected with total cable 15, and total cable 15 is connected with controller 3.Controller 3 measures the resistance of thermistor on chuck 14 by total cable 15 and separated time 141.Chuck 14 is provided with multiple, is circumferentially evenly arranged on clamping apparatus disk 12, and each chuck 14 is equipped with the separated time 141 be connected with total cable 15, can carry out the test of multiple thermistor simultaneously.
Clamping apparatus disk 12 comprises the upper dish 121 and lower wall 122 that are parallel to each other, is provided with joint pin 123 between upper dish 121 and lower wall 122, and upper dish 121 upper surface is provided with installation position, and chuck 14 is installed on installation position.Installation position is provided with cable hole 1211, and separated time 141 extends to upper dish 121 and lower wall 122 from chuck through cable hole 1211.Insulation cover 11 is provided with cable hole, total cable 15 extends to insulation cover 11 lower surface by cable hole from insulation cover 11 upper surface, the middle part of upper dish 121 is provided with circular hole 1212, and separated time 141 extends to total cable 15 between upper dish 121 and lower wall 122 through circular hole 1212.The end face of insulation cover 11 is provided with handle 16, and handle 16 is provided with two, is symmetrically distributed in the both sides of insulation cover 11, conveniently picks and places thermistor fixture 1.
As shown in Figure 5, the shell of chuck 14 is ceramic material, and stupalith has good insulation and high-temperature stability, can be used for high temperature test.Chuck 14 is provided with the socket 142 of clamping thermistor stitch, and the two ends of chuck 14 are provided with mounting hole 143, are fixed on clamping apparatus disk 12 by chuck 14 by mounting hole 143.
The course of work of the present embodiment: first all thermistors of required test are individually fixed on each chuck 14, thermistor fixture 1 is put into test cavity volume 21, insulation cover 11 is placed in opening 26, starting outfit, temperature-controlled box 2 by test cavity volume 21 in heating temperatures to each required temperature value, controller 3 measures the resistance of each thermistor at each temperature, thus automatically draws the resistance-temperature characteristic curve of each thermistor.
Above-described embodiment is preferably implementation of the present utility model, is not to restriction of the present utility model, and under the prerequisite not departing from inventive concept of the present utility model, any apparent replacement is all within protection domain of the present utility model.
Claims (8)
1. the resistivity-temperature characteristics detector of a thermistor, comprise thermistor fixture (1), temperature-controlled box (2) and controller (3), thermistor fixture, temperature-controlled box is all electrically connected with controller, controller is connected with display device (4), it is characterized in that: in described temperature-controlled box, be provided with test cavity volume (21), thermistor fixture is arranged in test cavity volume, the surrounding sidewall of test cavity volume is provided with airflow hole (22), gas channel (23) is provided with between the surrounding sidewall of test cavity volume and temperature-controlled box outer wall, airflow hole communicates with gas channel, the bottom of test cavity volume is provided with heating arrangement (24), the below of heating arrangement is provided with fan assembly (25), also temperature sensor is provided with in test cavity volume.
2. the resistivity-temperature characteristics detector of thermistor according to claim 1, it is characterized in that: described thermistor fixture (1) comprises insulation cover (11), clamping apparatus disk (12) and total cable (15), temperature-controlled box is provided with and the opening (26) tested cavity volume and be communicated with, insulation cover and opening cooperatively interact, insulation cover is connected with clamping apparatus disk by column (13), clamping apparatus disk is provided with the chuck (14) for fixing thermistor, chuck is provided with separated time (141), separated time is connected with total cable, and total cable is connected with controller.
3. the resistivity-temperature characteristics detector of thermistor according to claim 2, is characterized in that: described chuck (14) is provided with multiple, is circumferentially evenly arranged on clamping apparatus disk (12), and each chuck is equipped with the separated time (141) be connected with total cable.
4. the resistivity-temperature characteristics detector of thermistor according to claim 3, it is characterized in that: described clamping apparatus disk (12) comprises the upper dish (121) and lower wall (122) that are parallel to each other, joint pin (123) is provided with between upper dish and lower wall, upper dish upper surface is provided with installation position, and chuck (14) is installed on installation position.
5. the resistivity-temperature characteristics detector of thermistor according to claim 4, is characterized in that: described installation position is provided with cable hole (1211), and separated time (141) extends to upper dish and lower wall from chuck through cable hole.
6. the resistivity-temperature characteristics detector of thermistor according to claim 5, it is characterized in that: described insulation cover (11) is provided with cable hole, total cable extends to insulation cover lower surface by cable hole from insulation cover upper surface, the middle part of upper dish is provided with circular hole (1212), and separated time extends to total cable between upper dish and lower wall through circular hole.
7. the resistivity-temperature characteristics detector of thermistor according to claim 6, it is characterized in that: the shell of described chuck (14) is ceramic material, chuck is provided with the socket (142) of clamping thermistor stitch, and the two ends of chuck are provided with mounting hole (143).
8. the resistivity-temperature characteristics detector of the thermistor according to any one of claim 2 to 7, is characterized in that: the end face of described insulation cover (11) is provided with handle (16), and handle is provided with two, is symmetrically distributed in the both sides of insulation cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520397343.6U CN204694378U (en) | 2015-06-11 | 2015-06-11 | A kind of resistivity-temperature characteristics detector of thermistor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520397343.6U CN204694378U (en) | 2015-06-11 | 2015-06-11 | A kind of resistivity-temperature characteristics detector of thermistor |
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| CN204694378U true CN204694378U (en) | 2015-10-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841846A (en) * | 2016-05-26 | 2016-08-10 | 句容市博远电子有限公司 | NTC heat-sensitive chip testing method |
| CN105944974A (en) * | 2016-06-28 | 2016-09-21 | 江苏时瑞电子科技有限公司 | High-precision measurement device for thermistor finished products in air medium |
| CN106323506A (en) * | 2016-08-03 | 2017-01-11 | 广东优科检测技术服务有限公司 | System for measuring resistance temperature characteristics of resistor |
| CN108007958A (en) * | 2018-01-24 | 2018-05-08 | 无锡圣敏传感科技股份有限公司 | Generating means and detecting system |
| CN109828174A (en) * | 2019-03-12 | 2019-05-31 | 华中科技大学 | A kind of warm test device of PTC resistance |
| CN109839541A (en) * | 2017-11-27 | 2019-06-04 | 上海交通大学 | For measuring the measuring device of thermosensitive resistance type detector time constant characteristic |
| CN111637983A (en) * | 2020-05-29 | 2020-09-08 | 一汽解放汽车有限公司 | Detection system and method of resistance type temperature sensor |
| CN113804970A (en) * | 2021-09-30 | 2021-12-17 | 上海卫星装备研究所 | Thermistor electrical property batch automatic testing device and working method |
-
2015
- 2015-06-11 CN CN201520397343.6U patent/CN204694378U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841846A (en) * | 2016-05-26 | 2016-08-10 | 句容市博远电子有限公司 | NTC heat-sensitive chip testing method |
| CN105841846B (en) * | 2016-05-26 | 2018-05-11 | 句容市博远电子有限公司 | The test method of NTC heat sensitive chips |
| CN105944974A (en) * | 2016-06-28 | 2016-09-21 | 江苏时瑞电子科技有限公司 | High-precision measurement device for thermistor finished products in air medium |
| CN105944974B (en) * | 2016-06-28 | 2018-10-16 | 江苏时恒电子科技有限公司 | High-precision measuring device in thermistor finished product air dielectric |
| CN106323506A (en) * | 2016-08-03 | 2017-01-11 | 广东优科检测技术服务有限公司 | System for measuring resistance temperature characteristics of resistor |
| CN106323506B (en) * | 2016-08-03 | 2019-02-12 | 广东优科检测技术服务有限公司 | A kind of system measuring resistance resistivity-temperature characteristics |
| CN109839541A (en) * | 2017-11-27 | 2019-06-04 | 上海交通大学 | For measuring the measuring device of thermosensitive resistance type detector time constant characteristic |
| CN108007958A (en) * | 2018-01-24 | 2018-05-08 | 无锡圣敏传感科技股份有限公司 | Generating means and detecting system |
| CN109828174A (en) * | 2019-03-12 | 2019-05-31 | 华中科技大学 | A kind of warm test device of PTC resistance |
| CN109828174B (en) * | 2019-03-12 | 2024-02-02 | 华中科技大学 | PTC temperature resistance testing device |
| CN111637983A (en) * | 2020-05-29 | 2020-09-08 | 一汽解放汽车有限公司 | Detection system and method of resistance type temperature sensor |
| CN111637983B (en) * | 2020-05-29 | 2022-04-19 | 一汽解放汽车有限公司 | Detection system and method of resistance type temperature sensor |
| CN113804970A (en) * | 2021-09-30 | 2021-12-17 | 上海卫星装备研究所 | Thermistor electrical property batch automatic testing device and working method |
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Address after: 523000 Guangdong Province, Dongguan city Changping town south of the village of Pu slate Technology Innovation Center building E Patentee after: Guangdong Youke testing certification Co., Ltd Address before: 523000 Guangdong Province, Dongguan city Changping town south of the village of Pu slate Technology Innovation Center building E Patentee before: GUANGDONG U.K STANDARD TESTING SERVICE Co.,Ltd. |