CN113483918B - Method and system for testing response speed of NTC (negative temperature coefficient) automobile temperature sensor to temperature - Google Patents
Method and system for testing response speed of NTC (negative temperature coefficient) automobile temperature sensor to temperature Download PDFInfo
- Publication number
- CN113483918B CN113483918B CN202110579519.XA CN202110579519A CN113483918B CN 113483918 B CN113483918 B CN 113483918B CN 202110579519 A CN202110579519 A CN 202110579519A CN 113483918 B CN113483918 B CN 113483918B
- Authority
- CN
- China
- Prior art keywords
- temperature sensor
- temperature
- resistance value
- air duct
- automobile
- 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.)
- Active
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a method for testing the response speed of an NTC automobile temperature sensor to temperature, which comprisesThe method comprises the following steps: at a constant temperature of T 0 A temperature sensor is arranged on the simulated air duct; the temperature sensor is electrified to generate heat automatically, and when the actual resistance value is within the set resistance value range, the electrifying is stopped, and the set resistance value range is that the induction temperature is within T 1 The corresponding sensor resistance value is the same as the sensor resistance value; when the real-time resistance value of the temperature sensor reaches a first set timing threshold value, starting timing, wherein the induction temperature corresponding to the first set timing threshold value is T 2 The method comprises the steps of carrying out a first treatment on the surface of the When the real-time resistance value of the temperature sensor reaches a second set timing threshold value, stopping timing, wherein the induction temperature corresponding to the second set timing threshold value is T 2 ‑[(T 2 ‑T 0 )×63.2％]The method comprises the steps of carrying out a first treatment on the surface of the Taking the timing time as a thermal time constant of the temperature sensor; t (T) 0 <T 2 <T 1 . Correspondingly, a test system is also provided. The invention can better simulate the orifice of the air duct of the automobile, realize rapid and accurate temperature field switching and is easy to control the timing start and stop. And the accuracy and the reliability of the test result are ensured.
Description
Technical Field
The invention relates to detection of an automobile temperature sensor, in particular to a method and a system for testing temperature response speed of an NTC automobile temperature sensor.
Background
The automobile air duct temperature sensor is a sensing device which senses an air duct temperature signal and collects a signal to be fed back to the control module to timely adjust the automobile heating system, and the response speed of the sensing device to the temperature directly influences the operation of the automobile heating system. At present, the method for testing the response speed of the NTC automobile temperature sensor to the temperature is as follows: two constant temperature air boxes are prepared in advance, one is adjusted to T1 ℃ and the other is adjusted to T2 ℃, then the sensor to be measured is transferred from the constant temperature air box at T1 ℃ to the constant temperature air box at T2 ℃, and the time required for 63.2 percent (namely (T2-T1) multiplied by 63.2 percent) of the temperature change of the sensor is recorded by adopting a timer.
This test mode may cause a larger error in the detection result:
(1) The wind speed in the constant temperature air box cannot be measured and is irregular, the controllability is not provided, and the environment of the air channel of the automobile cannot be well matched and simulated;
(2) The temperature in the air box is extremely easy to break the balance to cause severe fluctuation;
(3) The process of transferring the sensor to be tested is not easy to operate, and a larger detection error is caused by the fact that the sensor to be tested must pass through an uncontrollable variable of a room temperature environment during transferring;
(4) The timing of starting and ending the timer is not easy to grasp, and a large accidental error exists.
Disclosure of Invention
The invention relates to a method and a system for testing the response speed of an NTC automobile temperature sensor to temperature, which can at least solve part of defects in the prior art.
The invention relates to a method for testing the response speed of an NTC automobile temperature sensor to temperature, which comprises the following steps:
s1, installing a temperature sensor to be detected on a simulated air duct, wherein the simulated air duct is used for simulating the working condition of an automobile air duct, and the air temperature in the simulated air duct is constant and is T 0 ；
S2, loading current to the temperature sensor to be measured so as to enable the temperature sensor to be measured to spontaneously heat, and stopping loading current to the temperature sensor to be measured when the real-time resistance value of the temperature sensor to be measured is within a set resistance value range; the set resistance range is that the induction temperature is T 1 The corresponding sensor resistance value is the same as the sensor resistance value;
s3, when the real-time resistance value of the temperature sensor to be detected reaches a first set timing threshold value, starting timing, wherein the first set timing threshold value is that the induction temperature is at T 2 The corresponding sensor resistance value;
s4, judging whether the real-time resistance value of the temperature sensor to be detected reaches a second set timing threshold value, if so, stopping timing, and if not, continuously monitoring the real-time resistance value of the temperature sensor to be detected and continuously timing; the induction temperature corresponding to the second set timing threshold is T 2 -[(T 2 -T 0 )×63.2%]；
S5, acquiring the timing time in the step S4, and taking the timing time as the thermal time constant of the temperature sensor to be measured;
wherein T is 0 <T 2 <T 1 。
As one embodiment, S2 includes:
s21, loading initial current to the temperature sensor to be detected, monitoring voltage current values at two ends of the temperature sensor to be detected, and calculating according to a formula R=U/I to obtain a real-time resistance value of the temperature sensor to be detected;
s22, after the resistance value of the temperature sensor to be measured is stable, calculating a required current change value delta I according to the slope of the R-t image and the target resistance value, and regulating the loading current of the temperature sensor to be measured according to the delta I; the target resistance is the induction temperature T 1 The corresponding sensor resistance value;
s23, after the resistance value of the temperature sensor to be detected is stable, judging whether the current resistance value of the temperature sensor to be detected is within the set resistance value range, if so, stopping loading current to the temperature sensor to be detected, and if not, circularly carrying out S22-S23.
In the step S1, the simulated air duct is placed in a constant temperature air box, and a blower unit is disposed at one end of the simulated air duct, so that a constant temperature gas medium in the constant temperature air box is circularly blown into the simulated air duct, and the wind speed in the simulated air duct is matched with the wind speed in an automobile air duct.
As one of implementation modes, the other end of the simulated air duct is provided with an air meter which is used for monitoring the air speed in the simulated air duct in real time.
In S3 and S4, a resistance scanner is used to obtain the real-time resistance of the temperature sensor to be measured.
The invention has at least the following beneficial effects:
(1) The simulated air duct is adopted to simulate the air duct working condition environment of the automobile temperature sensor in the actual use process of the automobile, the air speed is controllable and easy to control, the objectivity and the authenticity of the test conditions can be effectively improved, the test result can more reflect the running state of the automobile temperature sensor, and the test result has a reference value.
(2) Because the temperature sensor is always in the constant-temperature simulation air duct in the test process, the movement is not needed, the problems of easy fluctuation of temperature, inconvenient operation, easy influence by external environmental factors and the like in the traditional test method are solved, the test error is reduced, and the test operability and the test result accuracy are effectively improved.
(3) The invention simulates the temperature change process between two temperature points by utilizing the self-heating and then natural cooling modes of the temperature sensor, realizes rapid and accurate temperature field switching, and avoids the difficult problems of temperature fluctuation in the constant temperature air box and difficult timing start-stop time grasping caused by temperature sensor position transfer. Because the temperature sensor generates heat automatically, the influence of an external heating mode on the temperature field around the temperature sensor is avoided, the heating degree is easy to control, the temperature control accuracy can be ensured, and the accuracy and the reliability of a test result are ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for testing a temperature response rate of an NTC automobile temperature sensor according to an embodiment of the present invention;
fig. 2 is an installation schematic diagram of a temperature sensor to be measured according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 2, an embodiment of the present invention provides a method for testing a response speed of an NTC automobile temperature sensor 13 to temperature, including the following steps:
s1, a temperature sensor 13 to be measured is arranged on a simulated air duct 12, and the simulated air duct 12 is used forIn the simulated automobile air duct working condition, the air temperature in the simulated air duct 12 is constant to be T 0 ；
S2, loading current to the temperature sensor 13 to be measured so as to enable the temperature sensor 13 to be measured to self-heat, and stopping loading current to the temperature sensor 13 to be measured when the real-time resistance value of the temperature sensor 13 to be measured is within a set resistance value range; the set resistance range is that the induction temperature is T 1 The corresponding sensor resistance value is the same as the sensor resistance value;
s3, when the real-time resistance value of the temperature sensor 13 to be measured reaches a first set timing threshold value, starting timing, wherein the first set timing threshold value is that the induction temperature is at T 2 The corresponding sensor resistance value;
s4, judging whether the real-time resistance value of the temperature sensor 13 to be detected reaches a second set timing threshold value, if so, stopping timing, and if not, continuously monitoring the real-time resistance value of the temperature sensor 13 to be detected and continuously timing; the induction temperature corresponding to the second set timing threshold is T 2 -[(T 2 -T 0 )×63.2%]；
S5, acquiring the timing time in the step S4, and taking the timing time as the thermal time constant of the temperature sensor 13 to be measured;
wherein T is 0 <T 2 <T 1 。
In the above step S1, it is preferable to adjust the wind speed in the simulated wind tunnel 12 to a set wind speed that matches the running wind speed in the automobile wind tunnel, and in general, a constant wind speed is used in the test in the simulated wind tunnel 12; that is, the wind speed in the simulated wind tunnel 12 may be set and adjusted according to the wind speed conditions of the vehicle tunnel operation. In one embodiment, as shown in fig. 2, a blower unit 14 is disposed at one end of the simulated air duct 12, and a wind meter 15 is disposed at the other end of the simulated air duct 12, where the wind meter 15 is used to detect the wind speed in the simulated air duct 12 in real time so as to guide the operation of the blower unit 14; the blower unit 14 may be a blower such as a fan.
For the arrangement of the temperature sensor 13 to be measured on the simulated air duct 12, it is obvious that the manner in which the temperature sensor 13 is mounted on the vehicle air duct should be simulated, for example, the temperature sensor 13 to be measured is fixed on the air duct of the simulated air duct 12 and its detection end protrudes into the lumen of the simulated air duct 12.
T is constant for the wind temperature in the simulated wind channel 12 0 Preferably, the simulated air duct 12 is placed in the constant temperature bellows 11, and the gaseous medium blown into the simulated air duct 12 by the blower unit 14 can be kept constant temperature. The thermostatic bellows 11 is typically a thermostatic air chamber.
The step S2 specifically includes the following steps:
s21, loading initial current to the temperature sensor 13 to be detected, monitoring the voltage current values at two ends of the temperature sensor 13 to be detected, and calculating according to a formula R=U/I to obtain the real-time resistance value of the temperature sensor 13 to be detected;
s22, after the resistance value of the temperature sensor 13 to be measured is stable, calculating a required current change value delta I according to the slope of the R-t image and the target resistance value, and adjusting the loading current of the temperature sensor 13 to be measured according to the delta I; the target resistance is the induction temperature T 1 The corresponding sensor resistance value;
s23, after the resistance value of the temperature sensor 13 to be measured is stable, judging whether the current resistance value of the temperature sensor 13 to be measured is within the set resistance value range, if so, stopping loading the current to the temperature sensor 13 to be measured, and if not, circularly executing S22-S23.
In S22, the judgment criterion for whether the resistance value of the temperature sensor 13 to be measured is stable is whether r=u/I fluctuates within 0.1%; the current values of the two ends of the temperature sensor 13 to be measured can be monitored in real time by using a multimeter, and in one embodiment, the high-precision six-position semi-multimeter is used, for example, a Keysight 34461A multimeter is used, so that the testing precision can be improved. When the resistance value of the temperature sensor 13 to be measured is stable, the subsequent operation is performed; if the resistance value of the temperature sensor 13 to be measured does not reach the stable state, the voltage current values of the two ends of the temperature sensor 13 to be measured are continuously monitored, and the temperature sensor is waited for reaching the stable state.
In addition, preferably, high-quality power supplies such as Keysight 3465A type power supplies are selected to ensure the stability of power supply and accurate control in a programmable manner.
In S22, for the NTC temperature sensor 13 (negative temperature coefficient sensor), the required current change value Δi is generally a current increase value, and accordingly, as the current increases, the real-time resistance value of the temperature sensor 13 decreases accordingly, and the temperature sensor 13 self-heats accordingly and increases in temperature.
In S23, the judging mode of whether the resistance of the temperature sensor 13 to be measured is stable is not different from the judging mode in S22, and will not be described here. It can be appreciated that in S23, when r=u/I decreases to or below the set threshold, that is, the current resistance of the temperature sensor 13 to be measured is within the set resistance range, the temperature of the temperature sensor 13 to be measured rises to T 1 Or at T 1 The above.
It will be appreciated that after stopping the current flow to the temperature sensor 13 to be measured, the temperature of this sensor necessarily tends to decrease to the same temperature as in the thermostatic bellows 11, i.e. to T 0 The method comprises the steps of carrying out a first treatment on the surface of the The temperature of the sensor will pass through T 2 ~T 0 In this embodiment, the interval is defined by the temperature change (T 2 -T 0 ) The time x 63.2% is taken as the thermal time constant of the temperature sensor 13 to be measured, which can characterize the rate of temperature response of the temperature sensor 13. That is, the temperature of the temperature sensor 13 to be measured is reduced to T 2 Starting timing, the temperature of the temperature sensor 13 to be measured is reduced to T=T 2 -[(T 2 -T 0 )×63.2%]Stopping timing; therefore, the T is preset 2 ~T 0 Interval, according to target temperature T of sensor 2 Correspondingly calculating the first set timing threshold value according to the target temperature T of the sensor 2 -[(T 2 -T 0 )×63.2%]The second set timing threshold is calculated accordingly, and the operation is easy.
Preferably, in S3 and S4, a resistance scanner is used to obtain the real-time resistance of the temperature sensor 13 to be measured. In one embodiment, a high-speed high-precision six-bit half-resistance scanner is used, for example, a Keysight34972A type resistance scanner is used.
According to the test method provided by the embodiment, the air duct working condition environment where the automobile temperature sensor 13 is located in the actual use process of the automobile is simulated by adopting the simulated air duct 12, the air speed is controllable and easy to control, the objectivity and the authenticity of the test condition can be effectively improved, the test result can more reflect the running state of the automobile temperature sensor 13, and the test result has a reference value.
According to the testing method provided by the embodiment, the temperature sensor 13 is always in the constant-temperature simulation air duct 12 in the testing process, so that movement is not needed, the problems that the temperature is easy to fluctuate, the operation is inconvenient, the external environment factors are easy to influence and the like in the traditional testing method are solved, the testing error is reduced, and the testing operability and the testing result accuracy are effectively improved.
According to the testing method provided by the embodiment, the temperature change process between two temperature points is simulated by using the self-heating and then natural cooling modes of the temperature sensor 13, so that the rapid and accurate temperature field switching is realized, and the problems of temperature fluctuation in the constant temperature bellows 11 and difficult timing start-stop time grasping caused by the position transfer of the temperature sensor 13 are avoided. Because the temperature sensor 13 generates heat automatically, the influence of an external heating mode on the temperature field around the temperature sensor 13 is avoided, the heating degree is easy to control, the temperature control accuracy can be ensured, and the accuracy and the reliability of a test result are ensured.
Example two
The embodiment of the invention correspondingly provides a test system for the response speed of the NTC automobile temperature sensor 13 to temperature, which comprises:
the device comprises a constant temperature air box 11, wherein a simulated air channel 12 is arranged in the constant temperature air box 11, one end of the simulated air channel 12 is provided with a blower unit 14, and the simulated air channel 12 is provided with a temperature sensor 13 installation position;
a power supply for loading current to the temperature sensor 13 to be measured, wherein the power supply is arranged in the constant temperature bellows 11 or outside the constant temperature bellows 11, and a power supply circuit of the power supply is wired to the installation position of the temperature sensor 13;
the resistance value scanner is used for acquiring the real-time resistance value of the temperature sensor 13 to be measured, is arranged in the constant-temperature bellows 11 or outside the constant-temperature bellows 11, and is used for wiring a connecting wire connected with the temperature sensor 13 to be measured to the mounting position of the temperature sensor 13.
The specific contents of the test system are described in the first embodiment, and are not described here again.
Preferably, as shown in fig. 2, a wind meter 15 is provided at the other end of the simulated air duct 12. The test system further comprises a control module, the blower unit 14, the power supply, the control valve, the resistance scanner, the air meter 15 and the like are electrically connected with the control module, wherein the related automatic control mode is a conventional automatic implementation scheme, and no additional programming is needed, so that the description is omitted. In one embodiment, the control module may be a PC, etc., and further may be configured with a display module, so that real-time data and resistance change images of the heating process and the cooling process of the temperature sensor 13 may be intuitively displayed, which is convenient for operation and control.
Further, the test system also comprises a universal meter for detecting the current voltage at two ends of the temperature sensor 13 to be tested when the current is loaded.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A method for testing the response speed of NTC automobile temperature sensor to temperature is characterized in that,
the testing method is implemented based on a testing system, the testing system comprises a constant-temperature air box, a power supply for loading current to a temperature sensor to be tested and a resistance scanner for acquiring the real-time resistance of the temperature sensor to be tested, wherein an analog air channel is arranged in the constant-temperature air box, one end of the analog air channel is provided with an air blowing unit, and a temperature sensor installation position is arranged on the analog air channel; the power supply is arranged in the constant-temperature bellows or outside the constant-temperature bellows, and a power supply circuit of the power supply is wired to the temperature sensor mounting position; the resistance scanner is arranged in the constant-temperature bellows or outside the constant-temperature bellows, and is used for wiring a connecting wire connected with a temperature sensor to be detected to the temperature sensor installation position;
the test method comprises the following steps:
s1, installing a temperature sensor to be detected on a simulated air duct, wherein the simulated air duct is used for simulating the working condition of an automobile air duct, and the air temperature in the simulated air duct is constant and is T 0 ；
S2, loading current to the temperature sensor to be measured so as to enable the temperature sensor to be measured to spontaneously heat, and stopping loading current to the temperature sensor to be measured when the real-time resistance value of the temperature sensor to be measured is within a set resistance value range; the set resistance range is that the induction temperature is T 1 The corresponding sensor resistance value is the same as the sensor resistance value;
s3, when the real-time resistance value of the temperature sensor to be detected reaches a first set timing threshold value, starting timing, wherein the first set timing threshold value is that the induction temperature is at T 2 The corresponding sensor resistance value;
s4, judging whether the real-time resistance value of the temperature sensor to be detected reaches a second set timing threshold value, if so, stopping timing, and if not, continuously monitoring the real-time resistance value of the temperature sensor to be detected and continuously timing; the induction temperature corresponding to the second set timing threshold is T 2 -[(T 2 -T 0 )×63.2%]；
S5, acquiring the timing time in the step S4, and taking the timing time as the thermal time constant of the temperature sensor to be measured;
wherein T is 0 <T 2 <T 1 。
2. The method for testing the temperature response rate of the NTC automobile temperature sensor according to claim 1, wherein S2 includes:
s21, loading initial current to the temperature sensor to be detected, monitoring voltage current values at two ends of the temperature sensor to be detected, and calculating according to a formula R=U/I to obtain a real-time resistance value of the temperature sensor to be detected;
s22, after the resistance value of the temperature sensor to be measured is stable, calculating a required current change value delta I according to the slope of the R-t image and the target resistance value, and regulating the loading current of the temperature sensor to be measured according to the delta I; the target resistance is the induction temperature T 1 The corresponding sensor resistance value;
s23, after the resistance value of the temperature sensor to be detected is stable, judging whether the current resistance value of the temperature sensor to be detected is within the set resistance value range, if so, stopping loading current to the temperature sensor to be detected, and if not, circularly carrying out S22-S23.
3. The method for testing the temperature response rate of the NTC automobile temperature sensor according to claim 1, wherein: and S1, placing the simulated air duct in a constant-temperature air box, wherein one end of the simulated air duct is provided with a blast unit, and the blast unit is used for circularly blasting constant-temperature gas media in the constant-temperature air box into the simulated air duct and enabling the wind speed in the simulated air duct to be matched with the wind speed in an automobile air duct.
4. The method for testing the temperature response rate of the NTC automobile temperature sensor according to claim 3, characterized by: and the other end of the simulated air duct is provided with an air meter which is used for monitoring the wind speed in the simulated air duct in real time.
5. The method for testing the temperature response rate of the NTC automobile temperature sensor according to claim 1, wherein: and S3 and S4, acquiring the real-time resistance of the temperature sensor to be detected by adopting a resistance scanner.
6. The method for testing the temperature response rate of the NTC automobile temperature sensor according to claim 1, wherein: and the other end of the simulated air duct is provided with an air meter which is used for monitoring the wind speed in the simulated air duct in real time.
7. The method for testing the temperature response rate of the NTC automobile temperature sensor according to claim 1, wherein: the test system further comprises a universal meter for detecting the current and the voltage at two ends of the temperature sensor to be tested when current is loaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110579519.XA CN113483918B (en) | 2021-05-26 | 2021-05-26 | Method and system for testing response speed of NTC (negative temperature coefficient) automobile temperature sensor to temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110579519.XA CN113483918B (en) | 2021-05-26 | 2021-05-26 | Method and system for testing response speed of NTC (negative temperature coefficient) automobile temperature sensor to temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113483918A CN113483918A (en) | 2021-10-08 |
| CN113483918B true CN113483918B (en) | 2023-06-23 |
Family
ID=77933483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110579519.XA Active CN113483918B (en) | 2021-05-26 | 2021-05-26 | Method and system for testing response speed of NTC (negative temperature coefficient) automobile temperature sensor to temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113483918B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006071334A (en) * | 2004-08-31 | 2006-03-16 | Honda Motor Co Ltd | Temperature detection apparatus for vehicle |
| CN108414118A (en) * | 2017-02-10 | 2018-08-17 | 山西润玖汽车配件科技有限公司 | A kind of automobile-used high temperature sensor geo-thermal response test method |
| CN110462355A (en) * | 2017-04-11 | 2019-11-15 | 昕诺飞控股有限公司 | Hot detection system and method |
| CN110763372A (en) * | 2019-11-29 | 2020-02-07 | 孝感华工高理电子有限公司 | Method for measuring resistance-temperature relation of NTC temperature sensor |
| CN211452669U (en) * | 2019-11-29 | 2020-09-08 | 孝感华工高理电子有限公司 | Multi-temperature-point multi-channel resistance acquisition system based on standard sample |
-
2021
- 2021-05-26 CN CN202110579519.XA patent/CN113483918B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006071334A (en) * | 2004-08-31 | 2006-03-16 | Honda Motor Co Ltd | Temperature detection apparatus for vehicle |
| CN108414118A (en) * | 2017-02-10 | 2018-08-17 | 山西润玖汽车配件科技有限公司 | A kind of automobile-used high temperature sensor geo-thermal response test method |
| CN110462355A (en) * | 2017-04-11 | 2019-11-15 | 昕诺飞控股有限公司 | Hot detection system and method |
| CN110763372A (en) * | 2019-11-29 | 2020-02-07 | 孝感华工高理电子有限公司 | Method for measuring resistance-temperature relation of NTC temperature sensor |
| CN211452669U (en) * | 2019-11-29 | 2020-09-08 | 孝感华工高理电子有限公司 | Multi-temperature-point multi-channel resistance acquisition system based on standard sample |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113483918A (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4532013A (en) | Method for monitoring operation of a current-limiting type gas sensor | |
| US6649041B2 (en) | Deterioration detector for exhaust gas sensor and method of detecting deterioration | |
| CN111734670B (en) | Test system and test method of magnetic suspension blower | |
| JP2000248963A (en) | Gas turbine engine | |
| JP4554535B2 (en) | Environmental test equipment | |
| JP3832332B2 (en) | Battery temperature detector | |
| CN113483918B (en) | Method and system for testing response speed of NTC (negative temperature coefficient) automobile temperature sensor to temperature | |
| JP4082314B2 (en) | Electronic component test method and test apparatus | |
| JP4587971B2 (en) | Environmental test equipment | |
| CN111829692B (en) | Blower parameter calibration device | |
| CN111487467A (en) | Method and device for obtaining initial resistance value of heating element | |
| CN215296509U (en) | System for testing temperature response rate of NTC (negative temperature coefficient) automobile temperature sensor | |
| JPH11183361A (en) | High temperature and high humidity test device, and heating and humidifying method thereof | |
| CN110972342B (en) | Sensor high-temperature alarm threshold compensation method and electromagnetic heating equipment | |
| JPH11248661A (en) | Gas detecting alarm | |
| CN118392349B (en) | Temperature detection device of wire controller, wire controller and temperature detection method thereof | |
| CN114295961B (en) | Power temperature cycle test method and device for high-power chip and electronic equipment | |
| CN212460376U (en) | Sudden-jump type temperature controller action test system for cabinet | |
| CN113250946B (en) | Detection system and detection method of sensor for air compressor | |
| CN206431506U (en) | A kind of total sulfur reacting furnace temperature control device | |
| JP2007322356A (en) | Humidity control method and environmental test device | |
| CN116298598A (en) | Electronic function test method for high-voltage PTC electric heater | |
| CN113777474B (en) | Test method and system for temperature-resistant aging test of integrated circuit | |
| JPH09304471A (en) | Environment-testing apparatus of sample actual measurement type | |
| US8055468B1 (en) | Output leakage compensation and method for implementing the same |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |