A radiation imaging apparatus includes a radiation detection unit with a pixel array configured to generate a signal according to radiation and a notification unit configured to perform notification by sound production. The radiation imaging apparatus includes: a detection unit configured to detect a plurality of notification events occurring in accordance with a state of the radiation imaging apparatus; and a control unit configured to control the notification by the notification unit based on priority set for each of the plurality of notification events.

An example smoke detector includes (i) a chamber; (ii) a first electrode disposed within the chamber; (iii) a second electrode disposed within the chamber, wherein gas is disposed in an inner space of the chamber between the first electrode and the second electrode; (iv) a radioactive source generating alpha particles within inner space of the chamber; and (v) a magnet coupled to the chamber, where the magnet generates a magnetic field in the inner space of the chamber.

A smart dosimeter coupled to a legal dosimeter and used as if they were incorporated into one structure. A sensor, provided in the smart dosimeter, detects a worker is wearing the legal dosimeter. An instantaneous exposed dose value can be checked, in real time, to assist a worker with performing an operation or task. A motion detection unit detects a motion; a legal dosimeter detection unit checks whether the legal dosimeter is coupled to the smart dosimeter; a wearing check unit checks whether the worker is wearing the legal dosimeter based upon motion information; a G-M detection unit detects a real-time exposed dose of the worker; and a data communication unit transmits the exposed dose, detected by the G-M detection unit, to a management server and receives warning situation information from the management server.

A smart dosimeter coupled to a legal dosimeter and used as if they were incorporated into one structure. A sensor, provided in the smart dosimeter, detects a worker is wearing the legal dosimeter. An instantaneous exposed dose value can be checked, in real time, to assist a worker with performing an operation or task. A motion detection unit detects a motion; a legal dosimeter detection unit checks whether the legal dosimeter is coupled to the smart dosimeter; a wearing check unit checks whether the worker is wearing the legal dosimeter based upon motion information; a G-M detection unit detects a real-time exposed dose of the worker; and a data communication unit transmits the exposed dose, detected by the G-M detection unit, to a management server and receives warning situation information from the management server.

An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.

An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.

This non-destructive inspection system 1 has a non-destructive inspection device 2 and a management device 3. The non-destructive inspection device 2 is provided with: a neutron emission unit 10 capable of emitting a neutron beam; a gamma ray detection unit 20 capable of detecting gamma rays; a device casing 30 covering the neutron emission unit 10 and the gamma ray detection unit 20, an opening 30a being formed in the device casing 30; an outer shutter 31 that opens/closes the opening 30a; dose monitors 51, 52, 53 provided to the device casing 30, the dose monitors 51, 52, 53 detecting the radiation dose; a device communication unit 56 capable of transmitting device information including the detected radiation dose to the management device 3, and capable of receiving inspection permission information from the management device 3; and a device control unit 40 that, when the inspection permission information is acquired, opens the outer shutter 31 and enables emission of a neutron beam from the neutron emission unit 10.

This non-destructive inspection system 1 has a non-destructive inspection device 2 and a management device 3. The non-destructive inspection device 2 is provided with: a neutron emission unit 10 capable of emitting a neutron beam; a gamma ray detection unit 20 capable of detecting gamma rays; a device casing 30 covering the neutron emission unit 10 and the gamma ray detection unit 20, an opening 30a being formed in the device casing 30; an outer shutter 31 that opens/closes the opening 30a; dose monitors 51, 52, 53 provided to the device casing 30, the dose monitors 51, 52, 53 detecting the radiation dose; a device communication unit 56 capable of transmitting device information including the detected radiation dose to the management device 3, and capable of receiving inspection permission information from the management device 3; and a device control unit 40 that, when the inspection permission information is acquired, opens the outer shutter 31 and enables emission of a neutron beam from the neutron emission unit 10.

An example smoke detector includes (i) a chamber; (ii) a first electrode disposed within the chamber; (iii) a second electrode disposed within the chamber, wherein gas is disposed in an inner space of the chamber between the first electrode and the second electrode; (iv) a radioactive source generating alpha particles within inner space of the chamber; and (v) a magnet coupled to the chamber, where the magnet generates a magnetic field in the inner space of the chamber.

The present disclosure provides a smart terminal, including a radioactive detector, a communication device, an interactive device and a processor. The radioactivity detector is configured to detect a radioactive parameter and send a detection value of the radioactive parameter to the processor. The interactive device is configured to receive an operation instruction of a user and send the operation instruction to the processor. The communication device is configured to establish a connection and pair with a mobile terminal having a wireless communication function through a short range wireless communication mode. The processor is configured to establish a mapping between the interactive device of the smart terminal and an interactive device of the mobile terminal, and remotely control the interactive device of the mobile terminal according to the operation instruction received by the interactive device of the smart terminal.