Neutron diffraction stress measurement device and method based on spatial coordinate measurement

A neutron diffraction stress measurement device based on spatial coordinate measurement, comprising:

• an autonomous navigation vehicle 1;
• an attitude adjustment system 2;
• a spatial measurement sensor 4;
• a neutron detector 3;
• a sample stage 5;
• and
• a main controller;
• wherein the attitude adjustment system 2 is fixedly mounted on the autonomous navigation vehicle 1, the neutron detector 3 is detachably mounted on the attitude adjustment system 2, and the autonomous navigation vehicle 1 is configured to carry the neutron detector 3 and the attitude adjustment system 2 to move to a vicinity of a designated position in a measurement space;
• wherein the spatial measurement sensor 4 is configured to measure an actual position and attitude of the neutron detector 3 in the measurement space, and transmit measurement data to the main controller;
• wherein the main controller is electrically connected to the autonomous navigation vehicle 1, the attitude adjustment system 2, and the spatial measurement sensor 4, respectively, and is configured to send a motion command, receive the measurement data, execute a coordinate transformation operation and an inverse kinematics operation, and output a control signal;
• and
• wherein the sample stage 5 is disposed within a measurement range of the neutron detector 3, and is configured to support a sample 6 to be measured and adjust a position and attitude of the sample 6.