Mass detection device, mass detection system, and mass detection method based on multi-sensor signal fusion

A mass detection system, comprising:

• at least one mass detection device;
• a cloud server;
• wherein the mass detection device communicates with the cloud server;
• wherein the mass detection device comprises:
• a processor;
• at least one sensor assembly, wherein the sensor assembly at least comprises a first sensor and a second sensor;
• the sensor assembly is configured to be connected to the processor and output a first sensing information and a second sensing information related to a mass of an object to be measured;
• wherein the processor is configured to acquire the first sensing information and the second sensing information to determine an initially measured mass of the object to be measured by each sensor, and according to a comparison between a selected initially measured mass of the object to be measured and a first set threshold and a comparison between an absolute value of a difference in the initially measured mass of the object to be measured by each sensor and a second set threshold, to determine a final mass of the object to be measured;
• wherein the first sensor and the second sensor at least comprise one electromagnetic weighing sensor, and the electromagnetic weighing sensor comprises:
• a frequency generation module configured to generate a set frequency signal;
• a first resonance module configured to generate a primary resonance signal based on the set frequency signal;
• a second resonance module configured to be connected to the first resonance module through a coupling capacitor to generate a secondary resonance signal based on the primary resonance signal;
• wherein the second resonance module comprises a coil arranged in a Z direction, a ferrite is arranged in the coil, and a height of the coil is higher than the ferrite;
• the coil is capable of carrying a weight to be measured, so as to deform to change an eigenfrequency of the electromagnetic weighting sensor;
• an echo collection and processing module configured to be connected to the second resonance module to collect the secondary resonance signal and output a voltage signal varying according to the eigenfrequency of the electromagnetic weighting sensor.

A mass detection method, wherein the method is applied to a mass detection device, wherein the mass detection device comprises:

• a processor;
• at least one sensor assembly, wherein the sensor assembly at least comprises a first sensor and a second sensor;
• the sensor assembly is configured to be connected to the processor and output a first sensing information and a second sensing information related to a mass of an object to be measured;
• wherein the processor is configured to acquire the first sensing information and the second sensing information to determine an initially measured mass of the object to be measured by each sensor, and according to a comparison between a selected initially measured mass of the object to be measured and a first set threshold and a comparison between an absolute value of a difference in the initially measured mass of the object to be measured by each sensor and a second set threshold, to determine a final mass of the object to be measured;
• wherein the method comprises:
• acquiring the first sensing information and the second sensing information to determine an initially measured mass of the object to be measured by each sensor, and according to a comparison between a selected initially measured mass of the object to be measured and a first set threshold and a comparison between an absolute value of a difference in the initially measured mass of the object to be measured by each sensor and a second set threshold, to determine a final mass of the object to be measured;
• wherein the first sensor comprises any one of an electromagnetic weighing sensor and a stress weighing sensor, and the second sensor comprises the other one of the electromagnetic weighing sensor and the stress weighing sensor.