TPA81 Thermopile Array
Devantech
Detects a candle flame at a range 2 metres (6ft) and is unaffected by ambient light! Detects Human Body heat!
The TPA81 is a thermopile array detecting infra-red in the 2um-22um range. This is the wavelength of radiant heat. The Pyro-electric sensors that are used commonly in burglar alarms and to switch on outside lights, detect infra-red in the same waveband. These Pyro-electric sensors can only detect a change in heat levels though - hence they are movement detectors. Although useful in robotics, their applications are limited as they are unable to detect and measure the temperature of a static heat source. Another type of sensor is the thermopile array. These are used in non-contact infra-red thermometers. They have a very wide detection angle or field of view (FOV) of around 100° and need either shrouding or a lens or commonly both to get a more useful FOV of around 12°. Some have a built in lens. More recently sensors with an array of thermopiles, built in electronics and a silicon lens have become available. This is the type used in the TPA81. It has a array of eight thermopiles arranged in a row. The TPA81 can measure the temperature of 8 adjacent points simultaneously. The TPA81 can also control a servo to pan the module and build up a thermal image. The TPA81 can detect a candle flame at a range 2 metres (6ft) and is unaffected by ambient light!
Manufacturer's data
Variations available
TPA81 - 8x1 Thermopile Array
Straight pins (Variations available)from ROBOT ELECTRONICS
Newest specification: 01/2009
TPA81-RA - 8x1 Thermopile Array with Right Angeld Connector
Right angled pins (Variations available)from ROBOT ELECTRONICS
Newest specification: 11/2014
Product information for: TPA81 - 8x1 Thermopile Array
Publishing date (date of last technical specification): 2009-01-22
Shipping weight: 200 g
Manufacturer: Devantech
Brand: ROBOT ELECTRONICS
Article number: DEV-TPA81
Manufacturer's part number: TPA81
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Obsolete item
This item is not available any more. Some components might no longer be manufactured or there is an improved successor model.
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About ROBOT ELECTRONICS
ROBOT ELECTRONICS is a brand by English manufacturer Devantech Ltd., based in Norfolk. Product range comprises sensors, in particular ultrasonic or compass, servocontrollers as well as small robot drive systems or relay modules with various interfaces. Sensors are produced in England and are of consistently high quality.
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