7 results about "Multi detector" patented technology

Aspects of the disclosure relate to a method for understanding the response of any multi-detector device to activated oxygen. The method relies on an expression of a three-dimensional distribution of activated oxygen from fast neutron, and on the expression of three-dimensional gamma ray detection efficiency. A realistic model is derived for the signals measured in the detectors as function of the device-to-oxygen differential velocity.

The application provides a self-adaptive smoke fire detection method suitable for ancient building environment, and relates to the technical field of fire detection, and comprises the following steps: collecting smoke concentration data of a smoke detector in an ancient building environment, removing invalid data by using an SPC statistical process control method to obtain an optimal data set; based on the optimal data set, calculating the correlation support degree between each smoke detector, and constructing a support matrix; the application effectively removes invalid data by using an SPC control chart, objectively evaluates the reliability of the detector based on the correlation support degree, dynamically integrates multi-sensor information by using a self-adaptive weighted fusion algorithm, and designs a trend threshold algorithm and a field model analysis algorithm for single detector and multi-detector scenes respectively, so that the fire determination strategy and the alarm threshold can be adaptively adjusted according to real-time environmental parameters and interference characteristics, the high sensitivity to real fire is retained, and frequent false alarms caused by traditional use of fire, ventilation airflow and humidity change are effectively inhibited.

Methods and systems are provided for a sample holder for a multi-detector quantitative microscopy system. In one example, the sample holder includes a frame with a central opening, a pivotable arm positioned adjacent to the central opening and having a whippletree assembly at a first end of the pivotable arm, and a movable ram, in contact with a second end of the pivotable arm, the movable ram configured to pivot the pivotable arm.

This invention discloses a violet-infrared flame detector system and its fault detection method based on multi-source information fusion and mutual verification, belonging to the field of fire alarm technology. The system includes multiple violet-infrared flame detectors and a system controller. Each detector stores orientation identification information and a list of adjacent orientations. The detectors form a verification network with detectors of the same orientation through a communication module and establish data exchange links with detectors of adjacent orientations. The data processing module uses statistical methods to calculate the mean and standard deviation of UV pulses in a reference group, constructs a dynamic confidence interval, and compares its own pulse count with the dynamic confidence interval. This invention effectively solves the problem of false alarms caused by interference from a single detector through multi-detector mutual verification, multi-spectral information fusion, and a system self-healing mechanism, significantly improving the reliability and safety of the flame detection system.

This application provides a method and apparatus for radon source localization and intensity estimation using a multi-detector array. The method includes: acquiring *a* valid reference events detected by the multi-detector array within a preset time period; the multi-detector array includes N detection nodes; performing spatiotemporal clustering on the *a* valid reference events to obtain *b* candidate homologous event clusters; filtering and analyzing the *b* candidate homologous event clusters based on the target space corresponding to the multi-detector array to obtain *c* event spatial coordinates; generating a three-dimensional density map of event point clouds based on the *c* event spatial coordinates; determining the location of the radon release source based on the local maxima of the three-dimensional density map of the event point cloud; and determining the relative release intensity corresponding to the location of the radon release source based on a preset diffusion decay model. By identifying radon sources through the spatial localization and density distribution of decay events, the accuracy of radon release source localization and intensity estimation is effectively improved.

This invention relates to the field of multi-detector cooperative control technology, and more particularly to a multi-robot cooperative exploration method for addressing positioning uncertainty and unknown requirements. The method linearizes sampled data containing nonlinear disturbances by designing an observation function and incorporates positioning errors into the covariance matrix of an extended Kalman filter, thereby correcting estimation errors caused by positioning uncertainty online. In the control phase, an alternative density function is constructed by calculating adaptive transition parameters, enabling the rover to automatically and smoothly switch from large-scale exploration to area coverage as environmental uncertainty decreases. Furthermore, precise coverage parameters are superimposed, and low-level control commands are generated by combining the rover's own nonholonomic kinematic constraints. Implementation results show that this invention can effectively improve estimation accuracy, coverage efficiency, and system stability in unknown environments with low computational overhead.