The direction of thermocouple temperature sensor

In the electronics industry, the basis of thermocouple sensor is quite important component, is widely used in aerospace, military, industrial, household appliances, automotive electronics, information and medical equipment and other fields, especially in recent years, with the spread of the concept of Internet of things, the thermocouple sensor after demand growth potential are look good.

in accordance with the purpose to distinguish, thermocouple sensor can be roughly divided into pressure thermocouple thermocouple sensor, thermocouple temperature sensor, flow sensor, horizontal thermocouple sensor, wireless thermocouple sensors and biological thermocouple sensor and so on. In all kinds of thermocouple sensor types, according to INTECHNO consulting firm, thermocouple temperature sensor accounted for about 15% of the total demand for the thermocouple sensor above, dosage for the largest thermocouple sensor.

in the direction of the digital temperature thermocouple sensor development to observe the latest development of thermocouple temperature sensor, ADI precision ADC Wei Ke product line application manager said: 'compared with the traditional product, new type of thermocouple temperature sensor presents the development trend of miniaturization, high precision, low power consumption, etc. . 'According to this development trend, ADI has provided a series of high precision, low cost digital temperature sensor, thermocouple Wei Ke pointed out that this series of thermocouple temperature sensor using the I2C or SPI interface, for more complex system design application, you can use the internal integration with DAC, ADC, reference source and threshold warning register digital thermocouple temperature sensor.

ADI precision ADC product line application manager Wei Ke

in this series, ADT7420 and ADT7320 is two digital temperature thermocouple sensors, high precision, low drift can be - 20 ˚ C to + 105 ˚ C plus or minus within the temperature range of 0. 25 ˚ C precision, in - 40 ° C to + 125 ° C temperature range is + / - 0. 5 DHS C precision. Wei Ke and stressed that, unlike other solutions, digital temperature thermocouple sensor ADT7420 and ADT7320 but plug and play, no additional signal disposal or calibration. ADI and provide a complete series of simulated temperature thermocouple sensors. In terms of price, Wei Ke said: 'the thermocouple temperature sensor as a highly competitive market, the product price is at a very low level. '

in fact using MEMS technology to reduce volume, the industry remains committed to provide the price lower temperature thermocouple sensors. Such as Texas instruments ( TI) In the middle of the year issued by non contact infrared temperature thermocouple sensor chip TMP006, its price is down to 18 125 compared with the existing temperature thermocouple sensors. In addition, the TMP006 packaging area is reduced by 95%, power consumption is reduced by 90%. It is known that TI this thermocouple temperature sensor are shrinking volume, is mainly due to the integration of the thermopile thermocouple sensor by MEMS technology.

due to the decrease in the volume, which makes the application scope of passive infrared temperature thermocouple sensor to the industrial field extends to smart phones, tablets, laptops and other portable products, measure the casing temperature. Is different from the traditional way attached to the outside, the thermocouple temperature sensor for the welding on the PCB directly, due to the thermocouple sensor can be installed in the hottest place close to the system, thus can provide more accurate temperature measurement.

Texas instruments, audio video products surface temperature, the electric flu and Gamma measurement buffer product marketing manager Daniel Mar and said, there have been several consumer electronics companies plan to approach to innovation will be the MEMS infrared temperature thermocouple sensors used in their products. The TMP006 1. 6 mm x 1. 6 mm single chip integration including MEMS thermopile thermocouple sensor, signal regulating function, 16 bit ADC, local temperature thermocouple sensor and all kinds of voltage reference, integration degree is high, can provide complete digital for non-contact temperature measurement solutions.

basically, temperature is the most common physical quantity being measured, as a result, in addition to the independent existence of thermocouple temperature sensor, you can see more of thermocouple temperature sensor are integrated to other sensor products, such as vibration monitor ADI's newly minted ADIS16228, this product will be transformed MEMS accelerometer with a programmable embedded processing capacity of 3 axis vibration analyzer, which integrates digital thermocouple temperature sensor. On the whole, the development of the thermocouple temperature sensor is from the traditional simulation toward digital thermocouple sensor, to facilitate further consolidation and provide data processing function.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure thermocouple sensor, digital temperature thermocouple sensor