Then many reversing radar what the market performance? Whether the newcomers can solve the trouble reversing? New Express vehicle testing in heart has been installed on board on a number of car parking sensor during the actual measurement.
Parking sensor works
Major role in reversing radar when in reverse, using ultrasonic principle, by the device on the rear bumper send ultrasonic probe on the impact. After the reflection of this wave probe obstacles to calculate the body and the actual distance between the obstacle and then prompted for the driver to stop and reverse easier and safer. Tips for reversing radar can be divided into liquid crystal, three kinds of language and sound; to receive a wireless transmission means and cable transmission and so on.
Parking sensor is a safe vehicle parking assist device, to lift the drivers start parking and vehicle access around before and after the trouble caused, and to help the driver to remove the dead zone and blurred vision defects, improve driving safety.
Test 1
Parking sensor Brand: Rail general probe: 4
Warning prompt by: Sound + mirrors digital distance display
Installation of vehicle: Passat
Warning from the test: we first tested with an ice cream bucket and found the car parking sensor simply undetectable! Until the ice cream barrel accumulate to the height of 50 cm can be tested. The reversing radar obstacle distance display accuracy of 10 cm. Measured in barrels of ice cream for the longest detection range of 120 cm, reversing radar display at this time distance of 130 cm. The most important proximal. Distance of 40 cm were tested and the results are still accurate. But when the ice cream barrel less than 40 cm away from the rear, the parking sensor display from "0." That is the smallest of the reversing radar detection range of 40 cm.
Obstacle azimuth display test: the reversing radar only shows the left or right barrier.
Detect dead test: When the top ice cream bucket center deviation 8 cm above the probe center, the probe can not find the existence of the ice cream bucket! Also issue of sensor means of ultrasonic sound beam is narrow, cone obstacle detection on the tube there are more dead.
Conclusion: Reversing Radar 50 cm below the height of obstacles in the "blind eye" to detect acoustic beam is too narrow, when the obstacle departure from exploration. When the head is on the point of view, there is a big blind spot detection, obstacle detection cone of the tube there are more bind spots.
Test 2
Parking sensor Brand: All safety probe: 4
Warning prompt by: Sound + Digital Display + direction from light to indicate
Warning from the test: the reversing radar obstacle distance display accuracy of 1 cm. Measured in barrels of ice cream vehicle farthest with a detection range of 140 cm, reversing radar display at this time distance of 154 cm. The most important proximal test, we were at 50 cm, 47 cm, 40 cm and 35 cm for distance test, the results are very accurate. However, when ice cream barrels less than 35 cm away from the rear, the parking sensor display from "0." That is the smallest of the reversing radar detection range is 35 cm.
Obstacle azimuth display test: the reversing radar can accurately displayed.
Detect dead test: When the top ice cream bucket center 6 cm above deviate from the probe centers, the probe can not find the existence of ice-cream bucket! That is the issue of sensor ultrasonic beam is narrow, cone obstacle detection on the tube there are more dead ends.
Conclusion: The safety of this reverse sensor, proximal more accurate detection range, obstacle detection and accurate location. However, acoustic detection beam is too narrow,
When the obstacle is on the point of departure from the probe when there is a big blind spot detection, obstacle detection cone of the tube there are more dead ends.
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