CN202025094U

CN202025094U - Control Circuit of X-ray safety check equipment

Info

Publication number: CN202025094U
Application number: CN2011201065024U
Authority: CN
Inventors: 孙轶; 姜鑫东; 吴家荣
Original assignee: SHANGHAI GAOJING RADIOGRAPHY TECHNOLOGY Co Ltd
Current assignee: SHANGHAI GAOJING RADIOGRAPHY TECHNOLOGY Co Ltd
Priority date: 2011-04-12
Filing date: 2011-04-12
Publication date: 2011-11-02
Anticipated expiration: 2021-04-12

Abstract

The utility model provides a control circuit of X-ray safety check equipment, comprising an ARM 9 controller, a field programmable gate array, a network chip, a first equipment, a serial port communication chip and a second equipment, wherein the field programmable gate array, the network chip and the first equipment are connected with the ARM 9 controller, and the serial port communication chip and the second equipment are connected with the field programmable gate array. The control circuit of the X-ray safety check equipment improves stability, intelligence, operability and expandability of the safety check equipment. More complex system algorithms can be developed on the system, such as image pretreatment algorithm and level-two gray scale algorithm, and digital modules with high integrated level can be controlled, therefore, a circuit structure of the safety check equipment is substantially simplified, image transmission rate and image data throughput are substantially improved, and further transmission of high-resolution images becomes possible.

Description

The control circuit of X-ray rays safety detection apparatus

Technical field

The utility model relates to a kind of safety check field, particularly a kind of control circuit of X-ray rays safety detection apparatus.

Background technology

The X-ray rays safety detection apparatus is a kind ofly can be applied in all and need carry out the occasion that dangerous material, controlled knife etc. detect, for example railway station, subway station, airport and coach station etc.

Existing rays safety detection apparatus is owing to the restriction of X source resolution and image acquisition speed, and control circuit generally selects for use low single-chip microcomputer of dominant frequency or DSP to finish.For example, as shown in Figure 1, it is the control circuit synoptic diagram of an existing X-ray rays safety detection apparatus, this control circuit adopts the low speed digital signal processor to carry out data processing, the low speed single-chip microcomputer is handled peripheral control interface, because the processing power of single-chip microcomputer and the restriction of low speed digital signal processor processing speed make existing X-ray rays safety detection apparatus be difficult to competent present work.

The utility model content

The purpose of this utility model is to provide a kind of control circuit of powerful X-ray rays safety detection apparatus.

Reach other purposes in order to achieve the above object, the control circuit of the X-ray rays safety detection apparatus that the utility model provides comprises: the ARM9 controller; The field programmable gate array, network chip and first equipment that are connected with described ARM9 controller; And the serial port communication chip that is connected with described field programmable gate array and second equipment.

Compared with prior art, the beneficial effects of the utility model are: can develop complicated more system algorithm in this system, the Preprocessing Algorithm of image for example, secondary ash order algorithm or the like, can also control the very high digital module of some integrated levels, thereby simplify the circuit structure of rays safety detection apparatus greatly, and improved the transfer rate of image and the handling capacity of view data greatly, thereby make the high-definition picture transmission become possibility.This control circuit has improved the stability of rays safety detection apparatus, intelligent, operability and extensibility, thereby makes this rays safety detection apparatus have the stronger market competitiveness.

Description of drawings

Fig. 1 is the control circuit synoptic diagram of existing X-ray rays safety detection apparatus.

Fig. 2 is the control circuit synoptic diagram of X-ray rays safety detection apparatus of the present utility model.

Embodiment

See also Fig. 2, the control circuit of X-ray rays safety detection apparatus of the present utility model comprises: ARM9 controller, field programmable gate array (FPGA), network chip, serial port communication chip, first, equipment and second equipment.

Described ARM9 controller respectively with network chip, FPGA links to each other with first equipment; FPGA links to each other with second equipment with serial port communication chip respectively.

Described first equipment can be that SDRAM, FLASH and some need the directly actuated high speed device of ARM9 controller; Described second equipment can be the required control circuits of other system such as high-speed a/d converter, amplifier, relay, clock circuit, warning circuit.

Preferably, described ARM9 controller can adopt Marvell PXA270C520 processor.

Described ARM9 controller control FPGA, network chip and first equipment are finished the integral body control of system.The task that the ARM9 controller will be finished according to rays safety detection apparatus provides different steering orders, control FPGA, network chip and each first equipment, simultaneously the ARM9 controller according to the controlling party of the information decision systems that obtains from FPGA, network chip and each first equipment to concrete execution command.FPGA sends screen display according to the instruction control serial port communication chip of ARM9 controller to terminal, and FPGA also passes to the ARM9 controller with the information of terminal input; FPGA is according to the instruction control A/D converter of ARM9 controller, and A/D converter passes to FPGA with information after finishing corresponding task, and FPGA passes to the ARM9 controller after these image informations are passed through some pre-service in early stage; FPGA passes to FPGA with information according to each second equipment of instruction control of ARM9 controller after each second equipment is finished corresponding task, and FPGA passes to the ARM9 controller after these data are handled through necessity.

The utility model has solved following technical matters:

1, improved the ARM9 controller processing speed, made full use of the system resource utilization of ARM9 controller;

2, expand the IO interface of system, strengthened the control ability of system;

3, improve network transmission speed, strengthened image resolution ratio, improved connection stability;

4, the corresponding work load that alleviates industrial computer of image preprocessing function.

The utility model adopts fastest technical grade ARM9 controller on the market, its core frequency reaches as high as 620MHz, and adopts the multithreading operation pattern, can handle a large amount of realtime graphic signals, be convenient to control some high-speed digital circuits, improve executing efficiency.

The utility model adopts high speed FPGA (field programmable gate array) chip, directly controls external unit by FPGA according to the programmed instruction of ARM9 controller, for example serial communications system, A/D, I/O and other devices that need control.Because FPGA is that Parallel Executing Scheme has speed advantage clearly, it can be according to different control chips, produce the control signal of different frequency, greatly improved the adaptability of system, all control devices of rays safety detection apparatus all can be controlled by FPGA like this, and the ARM9 controller only is responsible for control FPGA and ask for something control chip at a high speed, network chip etc. for example, so just at utmost discharged the ARM9 controller, make its can sole duty to do ask for something speed fast, real-time task, and make the pre-service work of picture signal become possibility.The IO interface of FPGA is quite abundant, can control more signal like this, finishes the more control function, for the renewal of rays safety detection apparatus provides great space, has shortened the construction cycle of new product greatly.

The utility model has adopted more advanced ARM9 controller and 100M ethernet control chip, and image transfer rate and handling capacity are greatly improved.The intervention of FPGA can be controlled more port, can finish complicated control procedure, has good expandability, has improved the integrated level of whole system.

The foregoing description just lists expressivity principle of the present utility model and effect is described, but not is used to limit the utility model.Any personnel that are familiar with this technology all can make amendment to the foregoing description under spirit of the present utility model and scope.Therefore, rights protection scope of the present utility model should be listed as claims.

Claims

1. the control circuit of an X-ray rays safety detection apparatus is characterized in that comprising:

The ARM9 controller;

The field programmable gate array, network chip and first equipment that are connected with described ARM9 controller;

The serial port communication chip that is connected with described field programmable gate array and second equipment.

2. the control circuit of X-ray rays safety detection apparatus according to claim 1 is characterized in that: described first equipment comprises: SDRAM and FLASH.

3. the control circuit of X-ray rays safety detection apparatus according to claim 1 is characterized in that: described second equipment comprises: high-speed a/d converter, amplifier, relay, clock circuit and warning circuit.

4. according to the control circuit of each described X-ray rays safety detection apparatus of claim 1 to 3, it is characterized in that: described ARM9 controller adopts Marvell PXA270C520 processor.