3.4. Working modes
Depending on its use, you can configure the Yocto-RangeFinder to maximize accuracy (by
measuring on a longer period), the maximal distance (by increasing sensitivity to low reflections), or
the measure frequency. The default behavior is a compromise that you can use for standard
applications. Here is an estimate of expected sensor performances, in its different working modes:
Default mode characteristics
Measuring frequency: about 25 Hz
Maximal detection distance: 1.2m (inside, white target)
Expected accuracy:
Conditions
Distance Standard deviation
Light target, inside
120cm
4%
Dark target, inside
70cm
7%
Light target, outside
60cm
7%
Dark target, outside
40cm
12%
High accuracy mode characteristics
Measuring frequency: about 5 Hz
Maximal detection distance: 1.2m (inside, white target)
Expected accuracy: < 3%
Long distance mode characteristics
Measuring frequency: about 25 Hz
Maximal detection distance: 2m (inside, white target)
Expected accuracy:
Conditions
Distance Standard deviation
Light target inside
200cm
6%
Dark target inside
70cm
7%
High frequency mode characteristics
Measuring frequency: 30 Hz
Maximal detection distance: 1.2m (inside, white target)
Expected accuracy: 5%
3.5. Temperature variations
The distance sensor uses a detection principle which is sensitive to the temperature. You can
counter this sensitivity with a simple automatic sensor re-calibration process, which does not require
any external intervention. In order to avoid perturbing measure linearity, the Yocto-RangeFinder does
not trigger this calibration automatically. It is equipped with a temperature sensor which allows you to
decide when to trigger this calibration when the temperature difference since the latest calibration
reaches 8 degrees Celsius.
The next section describes using hardware calibration procedures.
3.6. Hardware calibration procedures
Calibration procedures described in the following paragraphs are specific to the VL53L0CXV0DH/1
sensor in the Yocto-RangeFinder and act directly on its detection principle. You must not mistake
3. Working principle and limitations
8
www.yoctopuce.com
Содержание Yocto-RangeFinder
Страница 1: ...Yocto RangeFinder User s guide...
Страница 2: ......
Страница 18: ...12 www yoctopuce com...
Страница 26: ...20 www yoctopuce com...
Страница 42: ...36 www yoctopuce com...
Страница 70: ...gcc lyocto lm lpthread lusb 1 0 lstdc 10 Using Yocto RangeFinder with C 64 www yoctopuce com...
Страница 90: ...84 www yoctopuce com...
Страница 120: ...114 www yoctopuce com...
Страница 130: ...124 www yoctopuce com...
Страница 158: ...21 High level API Reference On failure throws an exception or returns a negative error code 152 www yoctopuce com...
Страница 484: ...478 www yoctopuce com...
Страница 488: ...482 www yoctopuce com...
Страница 490: ...23 Characteristics 484 www yoctopuce com...
Страница 491: ......
Страница 492: ......