Motion Detection Sensors
QMS Motion Detection
KEMET’s QMS thin-film digital pyroelectric IR sensors combine high sensitivity with fast response times to ensure rapid and accurate motion detection, and high dynamic range to allow motion detection nearby or over larger distances. The 2×2 pixel version of this device allows users to determine the direction of motion. These high-quality sensors, in their small SMD package, integrate a digital, current mode read-out. Industry-standard I2C communication enables interfacing to microcontrollers and allows for easy tuning. Gain and filtering options can be optimized via the I2C interface . These sensors can be connected together in linear series to allow synchronized sampling across devices.
| Part Number | Element Size | Filter Aperture | Typical NEP | |
|---|---|---|---|---|
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USEQMSEA011680 | 0.41 mm2 | 1.65 mm | 2.7 x 10–10 W/√Hz |
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USEQMSEA221680 | 4 X 0.057 mm2 | 1.65 mm | 0.4 x 10–10 W/√Hz |
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USEQMSEA220980 | 4 X 0.057 mm2 | 0.9 mm | 0.4 x 10–10 W/√Hz |
| Features and Benefits | Field of View | Applications for Motion and Gesture Detection |
|---|---|---|
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QMS SMD Sensor Module
The Motion and Gesture Sensor Modules consist of a breakout board, on which an SMD motion sensor is mounted, ideal for easy evaluation and quick prototype development.
A ribbon cable for flexible connection to user’s hardware or backplane and control board is included.
| Part Number | Including Sensor | Filter Aperture | Element Size | Typical NEP |
|---|---|---|---|---|
| USEQMSM1011600 | USEQMSEA011680 | 1.65 mm | 0.41 mm2 | 2.7 x 10^–10 W/√Hz |
| USEQMSM1221600 | USEQMSEA221680 | 1.65 mm | 4 X 0.057 mm2 | 0.4 x 10^–10 W/√Hz |
| USEQMSM1220900 | USEQMSEA220980 | 0.9 mm | 4 X 0.057 mm2 | 0.4 x 10^–10 W/√Hz |
Outfitted with all necessary components for the 1.8-3.6 V power supply of the device, all functionality of the sensor is routed out to a 10-pin 1.27mm pitch IDC connector on the back side of the 16 x 13.8 mm PCB. The build height including the socket is 9 mm. They provide up to 1 MHz Fast Mode+ I2C communication to configure the sensor and read data from it.
| Pin | Symbol | Type | |
|---|---|---|---|
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1 | Vsupply | Power supply |
| 2 | Unassigned | – | |
| 3 | SCL (I2C) | Digital in/out | |
| 4 | SDA (I2C) | Digital in/out | |
| 5 | CS | Digital in | |
| 6 | INT | Digital out | |
| 7 | SYNC | Digital in/out | |
| 8 | CLK | Digital in/out | |
| 9 | Unassigned | – | |
| 10 | GND | Ground |
There is a chip select/enable pin and an interrupt output available. The CLK/SYNC pins can be used to feed an external clock signal in to the board or, alternatively, distribute the clock signal of one board to several other boards, thereby creating a synchronized “network” of sensors.
| Part Number | Use | Type | |
|---|---|---|---|
| USEQCSK0000000 | Control board for modules |
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USEQCSK0000000 can flexibly host up to four modules. With no hardware design work required, a combination of this backplane board and any of the attached SMD sensors can produce infrared sensor signal measurements out of the box in the early evaluation and design stages. This control board is provided with PC software allowing the user to configure and read out each of the SMD sensors connected. The sensor data is visualised in real time on a scope plot in the user interface. A csv file capture facility records the digital signals from the sensors for further processing by the user.
QMS Evaluation Kit
KEMET offers 4 different evaluation kits which have the sensor products at their core, to allow for low cost, low power, non-contact mid-IR motion, presence, and gesture detection, with or without Fresnel lenses. These evaluation kits can be connected to PCs over a micro-USB port. All evaluation systems are provided with Windows PC software, which allows sensor configuration, sensor signal visualization, and data capture to CSV, and also additional application-related functions in some cases.
| Part Number | Use | Includes | |
|---|---|---|---|
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USEQMSKL011600 | Motion Sensor With Fresnel Lens Eval Kit |
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USEQMSKL221600 | Directional Motion Sensor With Fresnel Lens Eval Kit |
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USEQMSKS221600 | Long-Range Motion Sensor With Fresnel Lens Eval Kit |
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USEQMSK1220900 | Medium-Range Motion Sensor Kit, No Optics |
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