System for image inspection of movable object and dodging method

• US 7,688,945 B2
• Filed: 12/25/2006
• Issued: 03/30/2010
• Est. Priority Date: 10/13/2006
• Status: Active Grant

• Current Assignee: Nuctech Company Limited (Tsinghua Tongfang Co., Ltd.), Tsinghua University
• Original Assignee: Nuctech Company Limited (Tsinghua Tongfang Co., Ltd.), Tsinghua University
• Inventors: Yang, Guang, Ruan, Ming, Peng, Hua, Liu, Yinong, Li, Yuanjing, Zhang, Li, Li, Junli, Sun, Shangmin, Jia, Wei, Zhang, Jinyu, Liu, Yaohong, Deng, Yanli, Chen, Zhiqiang, Liang, Siyuan, Zhang, Qingjun, Xie, Yali
• Primary Examiner(s): Kiknadze; Irakli
• Application Number:
  US11/997,443
• Publication Number:
  US 20090225939A1
• Time in Patent Office: 1,191 Days
• Field of Search: 378/57, 378/62, 378/101, 378/121, 378/106, 378/146, 250/358.1, 250/306
• US Class Current: 378/62
• CPC Class Codes: G01V 5/22 Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
• CPC Class Codes: G01V 5/232 having relative motion between the source, detector and object other than by conveyor G01V5/226 takes precedence

Abstract

The present invention discloses a system for imaging inspection of a movable object is provided, comprising: a first detecting unit configured to inspect whether a moving object to be inspected moves into a passage or not; a second detecting unit for inspecting whether a part to be shielded of the moving object passes into the passage or not and generating a passing signal after the first detecting unit inspects that the moving object to be inspected moves into the passage; a scan imaging device for emitting radiating beams for scan inspecting the moving object to be inspected; and a control system for generating a control signal for controlling the emitted radiating beams from the scan imaging device according to the passing signal from the second detecting unit. With the above system thereof, the imaging inspection of the moving object with rapid speed can be undertaken safely and reliably.

Claims

1. A system for imaging inspection of a movable object, comprising:

a first detecting unit configured to detect whether a moving object to be inspected moves into a passage or not;

a second detecting unit configured to detect whether a part to be shielded of the moving object passes into the passage or not and generate a passing signal after the first detecting unit detects that the moving object to be inspected moves into the passage;

a scan imaging device configured to emit radiating beams for inspecting the moving object to be inspected by scanning; and

a control system configured to generate a control signal for controlling the scan imaging device to generate the radiating beams according to the passing signal from the second detecting unit.

2. The system for imaging inspection of a movable object according to claim 1, wherein the scan imaging device comprises an accelerator having:

a microwave system configured to generate microwave electromagnetic field;

an electron beam emitting device configured to emit electron beams; and

an accelerating device configured to receive microwaves generated from the microwave device to form the microwave electromagnetic field for accelerating electron beams generated from the electron beam emitting device and directing the accelerated electron beams to a targeting in order to generate X ray beam.

3. The system for imaging inspection of a movable object according to claim 2, wherein the control system starts the microwave system when the first detecting unit detects the signal of the moving object to be inspected passing into the passage, and generates a control signal for controlling the electron beam emitting device to generate electron beam after the passing signal is received.

4. The system for imaging inspection of a movable object according to claim 3, wherein the control signal is generated after the microwave electromagnetic field is stabilized.

5. The system for imaging inspection of a movable object according to claim 2, wherein the electron beam emitting device comprises:

an electron gun triggering control device for generating a triggering synchronous signal when a signal allowing the electron gun to be operated is enabled;

a pulsing device for generating a first high voltage pulse according to the triggering synchronous signal generated by the electron gun triggering control device; and

an electron gun for emitting electron beams according to the first high voltage pulse.

6. The system for imaging inspection of a movable object according to claim 2, wherein the microwave system comprises:

a microwave pulse device for generating a second high voltage pulse; and

a microwave source for receiving the second high voltage pulse and generating microwave.

7. The system for imaging inspection of a movable object according to claim 1, wherein the moving object is a vehicle.

8. The system for imaging inspection of a movable object according to claim 7, wherein the part to be shielded is a driving cab of the vehicle.

9. A dodging method for a moving object being image inspected, comprising:

a first determining step of judging whether the moving object moves into a passage or not;

a second determining step of judging whether a part to be shielded of the moving object passes through a radiating scan area in the passage and generate a passing signal; and

a scan imaging step of generating a control signal for controlling a scan imaging device to generate radiating beams according to the passing signal, after judging that the part to be shielded passes through the radiating scan area, to emit radiating beam to the passage and inspect the moving object by scanning to dodge the area to be shielded.

10. The dodging method for a moving object being image inspected according to claim 9, wherein after the first determining step further comprising:

a step of triggering a microwave device of an accelerator of the scan imaging device for emitting the radiating beam to generate microwave when the moving object passes into the passage; and

a step of triggering an electron beam emitting device of the accelerator to emit electron beam during the step of the scan inspection.

11. The dodging method for a moving object being image inspected according to claim 9, wherein the moving object is a vehicle.

12. The dodging method for a moving object being image inspected according to claim 9, wherein a part to be shielded is a driving cab of the vehicle.