{"id":206,"date":"2020-10-10T02:57:10","date_gmt":"2020-10-09T17:57:10","guid":{"rendered":"https:\/\/telesentient-iot.com\/en\/?p=206"},"modified":"2020-12-02T18:53:21","modified_gmt":"2020-12-02T09:53:21","slug":"ndir_co2_sensor","status":"publish","type":"post","link":"https:\/\/telesentient-iot.com\/en\/2020\/10\/10\/ndir_co2_sensor\/","title":{"rendered":"Technical overview of NDIR CO2 sensor"},"content":{"rendered":"\n

CO2 sensor as an indicator of social distance<\/h2>\n\n\n\n

With the recent corona virus COVID-19, social distance is said to be important.<\/p>\n\n\n\n

In other words, it is necessary to keep a certain distance between people.<\/p>\n\n\n\n

It is believed that this new habit will continue.<\/p>\n\n\n\n

What this means is that you need to prevent a virus infection before you get it.<\/p>\n\n\n\n

What are the promising indicators for sensing technology that utilizes IoT in the event of a corona virus?<\/p>\n\n\n\n

Nowadays, CO2 concentration measurement using CO2 sensor is attracting attention.<\/p>\n\n\n\n

By breathing, a person inhales oxygen and exhales carbon dioxide.<\/p>\n\n\n\n

In other words, the CO2 concentration can be used as an index to measure whether or not people are crowded.<\/p>\n\n\n\n

Here, we would like to explain the utilization of the Sensor I \/ F LSI under development at Tele-Sentient when constructing a CO2 sensor.<\/p>\n\n\n\n

CO2 sensor technology (NDIR method)<\/h2>\n\n\n\n

NDIR (Non Dispersive InfraRed) method is a commonly used method for CO2 sensors.<\/p>\n\n\n\n

NDIR method is called the non-dispersive infrared absorption method.<\/p>\n\n\n\n

Gas absorbs a specific wavelength due to its molecular structure.<\/p>\n\n\n\n

By measuring the degree of absorption and analyzing the spectrum of infrared radiation absorption, the gas concentration can be measured.<\/p>\n\n\n\n

In the case of CO2, it absorbs infrared rays in the vicinity of 4260 nm, so the CO2 concentration can be measured by shining light at 4260 nm from a light source and measuring the degree of absorption with a photodiode.<\/p>\n\n\n\n

In addition, an analog technology such as an amplifier circuit for minute signals called AFE (Analog Front End) is required.<\/p>\n\n\n\n

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\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

In principle, a CO2 sensor can be configured with a light source, photodiode, and AFE with the configuration shown above.<\/p>\n\n\n\n

Tele-Sentient Sensor I\/F LSI<\/h2>\n\n\n\n

The Sensor I \/ F LSI under development at Tele-Sentient includes a circuit to control the light source, a circuit to detect the signal of the photodiode, and an AFE circuit.<\/p>\n\n\n\n

In other words, by connecting LEDs and photodiodes, you can configure a CO2 sensor.<\/p>\n\n\n\n

<\/p>\n\n\n\n

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Check Sensor I\/F LSI<\/a><\/div>\n<\/div>\n\n\n\n

<\/p>\n\n\n\n

The typical advantage of being made to order is that it supports Ultra Low Power Mode to reduce power consumption.<\/p>\n\n\n\n

We would like to explain the details of Sensor I\/F LSI and these advantages separately.<\/p>\n\n\n\n

Tele-Sentient is looking for manufacturing partners and development partners.<\/p>\n\n\n\n

<\/p>\n\n\n\n

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Looking for partners<\/a><\/div>\n<\/div>\n\n\n\n

<\/p>\n\n\n\n

If you are interested, please contact us from the following.<\/p>\n\n\n\n

<\/p>\n\n\n\n

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Click here to contact us<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"CO2 sensor as an indicator of social distance With the recent corona virus COVID-19, social distance is said to be important. In other words, it is necessary to keep a certain distance between people. It is believed that this new habit will continue. What this means is that you need to prevent a virus infection…","protected":false},"author":1,"featured_media":31,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[15,33,34],"class_list":["post-206","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sensor-related-technology","tag-co2-sensor","tag-ndir","tag-sensor-i-f-lsi"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/posts\/206"}],"collection":[{"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/comments?post=206"}],"version-history":[{"count":4,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/posts\/206\/revisions"}],"predecessor-version":[{"id":239,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/posts\/206\/revisions\/239"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/media\/31"}],"wp:attachment":[{"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/media?parent=206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/categories?post=206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/telesentient-iot.com\/en\/wp-json\/wp\/v2\/tags?post=206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}