VM1010 Optical Velocity Meter
Designed to measure the velocity of a target moving through its “U”-shaped sensor head, the VM1010 has applications in the development of latch doors, liftgates, hoods, etc., for automotive and is capable of measuring the velocity.
To set up the measurement, usually, a “wand” is temporarily attached to the moving body to be measured. Wands can be made of nearly anything opaque to infrared light, providing they are at least 0.060″ (1.5 mm) thick (welding rod, plastic rod attached to a suction cup, hanger wire, etc.). The wand trajectory should pass through the “U”-shaped sensor head, along the line between its two infrared light beams.
The measurement is accomplished by starting and stopping a timer, upon breaking the two light beams spaced 1.000″ apart. The time “T” [s] determined this way is then converted by the microprocessor into velocity “v”:
- Measuring Range: 0.03 to 15.0 m/s, or 0.10 to 50.0 ft/s
- Resolution: 0.01 (up to 2.99 m/s, or 9.99 ft/s) and 0.1 (3.0 to 15 m/s, or 10 to 50 ft/s)
- Accuracy: better than 2%
- Temperature Range: 0°C – 50°C (32°F – 122°F)
- Display: alphanumeric LCD, 2×16 characters, backlight
- Current consumption: 35 mA (no backlight, no analog output load)
- Battery: 9V-format 7.2V rechargeable NiCd, or 9V-format non-rechargeable selectable dip switches
- AC Adapter: 9Vdc/500mA unregulated, 2.1mm-plug, center-positive
- RS-232 Interface: ASCII File Transfer Protocol, CSV format, one way. Transmission Rates: 9600, 4800, 2400, 1200 or 300 bps; format: 8,N,1; DB-9F connector
- Analog Output: 0 to 5V; min. 1,000 ohm load resistance
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