Safety requirements for laser radar
Laser radar sensor as a core AGV, the AGV vehicle safety security serious relationship or not.
For example, in AGV design, first of all depending on the type and purpose of the AGV, clearly the security level of the device, and then according to the security level to carry out the selection of parts, especially the selection of laser radar. Such as sick of product safety laser radar complex SIL2 (IEC 61508).
Note that as obstacle avoidance radar and laser measurement, requires its security level is not the same, high level of security requirements obstacle avoidance, low measurement requirements.
If used for obstacle avoidance laser radar, laser radar does not meet the huge security risk of harm, if applied to security obstacle avoidance, no errors are detected, such as collision could result in serious accidents or people, it must meet safety standards. Like Boeing 737max8 aircraft pitot sensor does not detect the failure resulted from 2 plane crash and death of people of the same tragic accident.
1 safety standards.
Functional safety:. IEC61496 common measurement radar (not safe for obstacle avoidance), corresponding to GB19436.3
Industrial safety:. IEC61496 + ISO 13846 (can be used to secure obstacle avoidance)
2, to the German agency TUV safety certification through the CE, national accreditation bodies of water too.
3, the main aspects of safety certification certification.
A) design review product structure.
B) review the source code, the fault detection and processing procedures, if the fault is not ping, Fail-Safe condition.
C) Review of self-test circuit. Whether the motor includes a normal operation, the optical path of the self-test device and the like. White line fault signal output, low normal, high level fault. (Sick tim series is not, sick lms1xx series. Fuchs obstacle avoidance radar can not be used for safety, do not meet the criteria).
D) EMC EMC.
