Control unit and control method for radiation source and radiation inspection system and method thereof
First Claim
1. A control unit for controlling a radiation source, wherein the radiation source being operable to emit radiation for inspecting a moving object passing through an inspection passage, the control unit comprising:
- a first detector disposed downstream of the radiation source in an advancing direction of the moving object and spaced from the radiation source by a predetermined distance to detect the moving object passing through the inspection passagea second detector disposed under the ground surface of the inspection passage upstream of the first detector in the advancing direction of the moving object, and between the first detector and the radiation source; and
a controller for receiving signals from the first detector and the second detector,wherein only when both the first detector and the second detector detect the moving object, the controller controls the radiation source to automatically emit the radiation;
wherein the first detector comprises a photoelectric switch, and the second detector comprises a ground induction coil sensor.
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Accused Products
Abstract
A radiation inspection system is disclosed. The radiation inspection system comprises: an inspection passage through which a moving object under inspection can pass, a radiation source disposed on a side of the inspection passage for emitting radiation, an array of detectors disposed on the other side of the inspection passage opposite to the radiation source for receiving the radiation emitted from the radiation source, a detector for detecting the moving object, and a controller for receiving a signal from the detector and controlling the radiation source to emit radiation when the detector detects the moving object for radiation imaging and inspection of the moving object. According to the radiation inspection system, the controller can control the radiation source to automatically emit radiation beam based on the detection signal from the detector for inspecting the moving object. As a result, inspection efficiency is improved, safety is increased, and misoperation of the radiation source is eliminated.
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Citations
32 Claims
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1. A control unit for controlling a radiation source, wherein the radiation source being operable to emit radiation for inspecting a moving object passing through an inspection passage, the control unit comprising:
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a first detector disposed downstream of the radiation source in an advancing direction of the moving object and spaced from the radiation source by a predetermined distance to detect the moving object passing through the inspection passage a second detector disposed under the ground surface of the inspection passage upstream of the first detector in the advancing direction of the moving object, and between the first detector and the radiation source; and a controller for receiving signals from the first detector and the second detector, wherein only when both the first detector and the second detector detect the moving object, the controller controls the radiation source to automatically emit the radiation; wherein the first detector comprises a photoelectric switch, and the second detector comprises a ground induction coil sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a radiation source, wherein the radiation source being operable to emit radiation for radiation inspection of a moving object passing through an inspection passage, the method comprising steps of:
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providing a first detector downstream of the radiation source in an advancing direction of the moving object at a predetermined distance from the radiation source, providing a second detector under the ground surface of the inspection passage upstream of the first detector in the advancing direction of the moving object, and between the first detector and the radiation source; providing a controller for receiving signals from the first detector and the second detector to control the radiation source, and controlling the radiation source by the controller to automatically emit the radiation only when both the first detector and the second detector detect the moving object; wherein the first detector comprises a photoelectric switch, and the second detector comprises a ground induction coil sensor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A radiation inspection system, comprising:
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an inspection passage through which a moving object under inspection can pass, a radiation source disposed on a side of the inspection passage for emitting radiation, an array of detectors disposed on the other side of the inspection passage opposite to the radiation source for receiving the radiation emitted from the radiation source, a first detector disposed downstream of the radiation source in an advancing direction of the moving object and spaced from the radiation source by a predetermined distance to detect the moving object, a second detector disposed under the ground surface of the inspection passage upstream of the first detector in the advancing direction of the moving object, and between the first detector and the radiation source; a controller for receiving signals from the first detector and the second detector, wherein only when both the first detector and the second detector detect the moving object, the controller controls the radiation source to automatically emit the radiation for imaging and inspection of the moving object; and wherein the first detector comprises a photoelectric switch, and the second detector comprises a ground induction coil sensor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method of inspecting a moving object with radiation, comprising steps of:
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providing an inspection passage through which the moving object under inspection passes, providing a radiation source on a side of the inspection passage for emitting radiation, providing an array of detectors on the other side of the inspection passage opposite to the radiation source for receiving the radiation emitted from the radiation source, providing a first detector downstream of the radiation source in an advancing direction of the moving object at a predetermined distance from the radiation source, providing a second detector under the ground surface of the inspection passage upstream of the first detector in the advancing direction of the moving object, and between the first detector and the radiation source; providing a controller for receiving signals from the first detector and the second detector so as to control the radiation source, controlling the radiation source by the controller to automatically emit the radiation only when both the first detector and the second detector detect the moving object; and wherein the first detector comprises a photoelectric switch, and the second detector comprises a ground induction coil sensor. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification