CN210039332U - Experimental device capable of adjusting temperature sensor to measure body temperature - Google Patents
Experimental device capable of adjusting temperature sensor to measure body temperature Download PDFInfo
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- CN210039332U CN210039332U CN201920400763.3U CN201920400763U CN210039332U CN 210039332 U CN210039332 U CN 210039332U CN 201920400763 U CN201920400763 U CN 201920400763U CN 210039332 U CN210039332 U CN 210039332U
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- temperature sensor
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- operational amplifier
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Abstract
The utility model belongs to the technical field of the physics experimental facilities, concretely relates to experimental apparatus of temperature sensor measurable quantity body temperature adjusts. The method comprises the following steps: the temperature measuring device comprises a temperature sensor to be measured, an operational amplifier, an adjustable resistor, a digital display voltage/ammeter, a change-over switch, a standard thermometer, a thermostatic bath, a heating/refrigerating device, a standard temperature sensor and a temperature control system; the temperature sensor to be measured is used for being measured or calibrated; the operational amplifier adjusts circuit parameters through the adjustable resistor to calibrate output signals of the temperature sensor to be measured; the digital display voltage/ammeter is used for indicating the magnitude of the voltage and current signals; the switch is used for switching a current/voltage value of the temperature sensor or the operational amplifier to be measured indicated by the meter; the standard thermometer is used as a calibration standard; the temperature control system displays the current temperature and the set target temperature through the standard temperature sensor, and controls the heating/refrigerating device to enable the temperature in the thermostatic bath to rise or fall to the target temperature. The utility model discloses simple structure, low cost is convenient for make.
Description
Technical Field
The utility model belongs to the technical field of the physics experimental facilities, concretely relates to experimental apparatus of temperature sensor measurable quantity body temperature adjusts.
Background
The temperature sensor is a sensor which can sense temperature and convert the temperature into a usable output signal, is manufactured by utilizing the characteristics of some materials such as metal, semiconductor and the like related to the temperature, is a core part of a temperature measuring instrument and has a plurality of varieties. In the medical field, the most representative is the electronic thermometer, and compared with the traditional mercury glass thermometer, the electronic thermometer has the advantages of convenience in reading, short measuring time and high measuring precision. The basic principle is that the electric signal output by the temperature sensor is converted into a temperature indicating value after being calibrated by a circuit and is displayed on a display (a digital display voltage/ammeter) in a digital form. The study of related principles and applications is helpful for improving the professional level of the students in the department of industry and even the medical profession.
Disclosure of Invention
An object of the utility model is to provide an utilize experimental apparatus who adjusts temperature sensor measurable quantity body temperature.
The utility model provides an experimental apparatus of regulation temperature sensor measurable quantity body temperature, include: the temperature measuring device comprises a temperature sensor to be measured, an operational amplifier, an adjustable resistor, a digital display voltage/ammeter, a change-over switch, a standard thermometer, a thermostatic bath, a heating/refrigerating device, a standard temperature sensor and a temperature control system; wherein:
the temperature sensor to be measured is used for being measured or calibrated, and can be one or more;
the operational amplifier receives an output signal of the temperature sensor to be measured and calibrates the output signal;
the adjustable resistor is used for adjusting circuit parameters of the operational amplifier, including zero adjustment and signal magnification adjustment;
the digital display voltage/ammeter is used for displaying voltage and current data;
the selector switch is used for switching the display content of the digital display voltage/ammeter into an output signal of the temperature sensor to be detected or an output signal of the operational amplifier;
the measurement data of the standard thermometer is used as a calibration standard;
the constant temperature groove is used for accommodating the temperature sensor to be measured and the standard thermometer, so that the temperature sensor to be measured and the standard thermometer are in the same temperature environment;
the heating/refrigerating device acts on the thermostatic bath, is controlled by the temperature control system and heats or cools the thermostatic bath;
the standard temperature sensor collects current temperature data in the thermostatic bath, sends the current temperature data to the temperature control system and displays the current temperature data on the temperature control system;
the temperature control system can display the current temperature in the thermostatic bath detected by the standard temperature sensor; and can set a target temperature and control the heating/cooling device to raise or lower the temperature in the thermostatic bath to the target temperature.
The utility model discloses during the real-time, put into the thermostatic bath with the sensing part of the temperature sensor that awaits measuring, standard thermometer, temperature control system acquires the current temperature of thermostatic bath through the standard temperature sensor who sets up in the thermostatic bath rather than connecting to set up the target temperature of thermostatic bath in temperature control system, control heating/refrigerator begins work, makes the temperature rise in the thermostatic bath or descend the target temperature. Meanwhile, a digital display voltage/ammeter is used for observing and recording parameters of the output voltage/current of the temperature sensor to be measured, which change along with the temperature change; the output voltage or current of the temperature sensor to be measured is calibrated by using the standard thermometer, the operational amplifier and the adjustable resistor, and the calibrated voltage or current signal is displayed on the digital display voltage/ammeter, so that the temperature change mode of the temperature sensor to be measured is consistent with that of the standard thermometer, and the electronic thermometer capable of measuring the body temperature of a human body is debugged, namely, the debugged temperature sensor to be measured can be used for measuring the body temperature of the human body. A digital display voltage/ammeter is used, and the display is switched through a selector switch: the output voltage/current value of the temperature sensor to be measured changes along with the temperature in the thermostatic bath; and displaying: and adjusting the output voltage/current of the temperature sensor to be measured by using the adjustable resistor of the operational amplifier.
The utility model discloses simple structure, low cost is convenient for make.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Reference numbers in the figures: the temperature measuring device comprises a temperature sensor to be measured 1, an operational amplifier 2, an adjustable resistor 3, a digital display voltage/ammeter 4, a change-over switch 5, a standard thermometer 6, a thermostatic bath 7, a heating/refrigerating device 8, a standard temperature sensor 9 and a temperature control system 10.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The temperature sensor 1 to be measured is connected with the input end of the operational amplifier 2; the operational amplifier 2 is provided with two adjustable resistors 3 which respectively control zero adjustment and signal magnification adjustment; the selector switch 5 is provided with two switchable input ends and an output end, the output end of the operational amplifier 2 is connected with one input end of the selector switch 5, the temperature sensor 1 to be measured is connected with the other input end of the selector switch 5, and the output end of the selector switch 5 is connected with the digital display voltage/ampere meter 4;
the standard temperature sensor 9 is connected with a temperature control system 10;
the heating/refrigerating device 8 adopts a semiconductor refrigerating sheet technology, and the heating/refrigerating device 8 is arranged in the constant temperature tank 7 and is connected with the temperature control system 10;
the temperature sensor 1 to be measured, the standard temperature sensor 9 and the standard thermometer 6 are all arranged in the constant temperature tank 7; as shown in fig. 1.
The utility model discloses in, thermostatic bath 7 makes temperature sensor 1, standard temperature sensor 9 and standard clinical thermometer 6 that await measuring be in the same temperature environment, and standard temperature sensor 9 passes through the data line with temperature signal transmission to temperature control system 10 and can show in real time. The temperature control system 10 can be set with the target temperature to be measured, the heating/cooling device 8 is installed in the wall of the thermostatic bath 7, and the heating/cooling device 8 is controlled by the temperature control system 10 according to the difference between the target temperature and the current temperature to heat, cool or preserve the temperature of the thermostatic bath 7. The output signal of the temperature sensor 1 to be measured is divided into two paths, one path is directly connected to the selector switch 5, the other path is connected to the operational amplifier 2, the circuit of the operational amplifier 2 is at least connected with two adjustable resistors 3, the two adjustable resistors 3 are respectively used for adjusting the zero position and the signal multiplying power of the output voltage or current of the operational amplifier 2, and the adjustable range of the two adjustable resistors can enable the output signal of the operational amplifier 2 to be numerically corresponding to the indicating value of the standard thermometer 6 within a certain voltage or current range. The signal processed by the operational amplifier 2 is connected to the changeover switch 5 via a signal line. The function of the switch 5 is to switch the indication of the digital display voltage/current meter 4 between the output signal of the temperature sensor 1 to be measured and the output signal of the operational amplifier 2, so that the temperature characteristic of the temperature sensor 1 to be measured can be directly measured, and the temperature characteristic can be calibrated into the experimental function of the electronic thermometer through a circuit.
Claims (1)
1. An experimental apparatus for adjusting measurable body temperature of a temperature sensor, comprising: the temperature measuring device comprises a temperature sensor to be measured, an operational amplifier, an adjustable resistor, a digital display voltage/ammeter, a change-over switch, a standard thermometer, a thermostatic bath, a heating/refrigerating device, a standard temperature sensor and a temperature control system; wherein:
the temperature sensor to be measured is used for being measured or calibrated;
the operational amplifier receives an output signal of the temperature sensor to be measured and calibrates the output signal;
the adjustable resistor is used for adjusting circuit parameters of the operational amplifier, including zero adjustment and signal magnification adjustment;
the digital display voltage/ammeter is used for displaying voltage and current data;
the selector switch is used for switching the display content of the digital display voltage/ammeter into an output signal of the temperature sensor to be detected or an output signal of the operational amplifier;
the measurement data of the standard thermometer is used as a calibration standard;
the constant temperature groove is used for accommodating the temperature sensor to be measured and the standard thermometer, so that the temperature sensor to be measured and the standard thermometer are in the same temperature environment;
the heating/refrigerating device acts on the thermostatic bath, is controlled by the temperature control system and heats or cools the thermostatic bath;
the standard temperature sensor collects current temperature data in the thermostatic bath, sends the current temperature data to the temperature control system and displays the current temperature data on the temperature control system;
the temperature control system can display the current temperature in the thermostatic bath detected by the standard temperature sensor; and can set a target temperature and control the heating/cooling device to raise or lower the temperature in the thermostatic bath to the target temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920400763.3U CN210039332U (en) | 2019-03-27 | 2019-03-27 | Experimental device capable of adjusting temperature sensor to measure body temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920400763.3U CN210039332U (en) | 2019-03-27 | 2019-03-27 | Experimental device capable of adjusting temperature sensor to measure body temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210039332U true CN210039332U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920400763.3U Expired - Fee Related CN210039332U (en) | 2019-03-27 | 2019-03-27 | Experimental device capable of adjusting temperature sensor to measure body temperature |
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| Country | Link |
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| CN (1) | CN210039332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116184294A (en) * | 2023-03-15 | 2023-05-30 | 宁波希磁电子科技有限公司 | Trimming system of current sensor |
-
2019
- 2019-03-27 CN CN201920400763.3U patent/CN210039332U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116184294A (en) * | 2023-03-15 | 2023-05-30 | 宁波希磁电子科技有限公司 | Trimming system of current sensor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |