CN103049411B

CN103049411B - Communication control device, equipment and method

Info

Publication number: CN103049411B
Application number: CN201110308121.9A
Authority: CN
Inventors: 刘小平; 李景涛; 牛绍龙
Original assignee: Beijing Top Grade Medical Equipment Co Ltd
Current assignee: Beijing Top Grade Medical Equipment Co Ltd
Priority date: 2011-10-11
Filing date: 2011-10-11
Publication date: 2022-12-20
Anticipated expiration: 2031-10-11
Also published as: CN103049411A

Abstract

The invention provides a communication control device, equipment and a method, wherein the device comprises: the first port unit is used for connecting with a front-end electronic system and providing a clock and a synchronous clock for the front-end electronic system; and the second port unit is used for connecting with the data conforming system and providing a clock, a synchronous clock and communication control for the data conforming system. The scheme of the invention can establish communication between the front-end electronic system and the data coincidence system in the PET, thereby realizing high-precision PET measurement.

Description

Communication control device, equipment and method

Technical Field

The present invention relates to nuclear medicine imaging equipment, and is especially one kind of 32-ring PET (Positron Emission Tomography) communication controller, equipment and method.

Background

PET in medicine is a relatively advanced clinical examination imaging technique in the field of nuclear medicine. The PET has high measurement sensitivity, is an imaging reflecting molecular metabolism, can find the disease state by PET examination when the early stage of the disease is in a molecular level change stage, the morphological structure of a lesion area is not abnormal, and MRI and CT examination cannot clearly diagnose, can obtain a three-dimensional image, can perform quantitative analysis, and achieves early diagnosis, which is incomparable with other current image examinations.

32-Ring PET is a complex nuclear measurement system consisting of 1024 photomultiplier tubes, and correspondingly 1024 electronic channels. In this system there is a correction of the detector performance, such as the magnification; selecting a threshold value and a bias; selecting an energy window and a position boundary; acquiring data; there is a setting of the operation mode, etc. Currently, there is no communication between the upper computer of 32-ring PET and the lower level systems. And because PET is based on the coincidence measurement, the requirement on clock synchronism is high.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a communication control device, equipment and a method, which can realize the establishment of communication between a front-end electronic system and a data coincidence system in PET, and further realize high-precision PET measurement.

To solve the above technical problem, an embodiment of the present invention provides a communication control apparatus, including:

the first port unit is used for connecting with a front-end electronic system and providing a clock and a synchronous clock for the front-end electronic system;

and the second port unit is used for connecting with the data conforming system and providing a clock, a synchronous clock and communication control for the data conforming system.

Wherein the first port unit includes: the front-end electronic system is connected with at least one module unit of the front-end electronic system in a one-to-one correspondence mode, and at least one interface for providing a clock and a synchronous clock for the at least one module unit;

the second port unit includes: a first interface coupled to the data-compliant system and providing a clock and a synchronization clock for the data-compliant system, and a second interface coupled to the data-compliant system and providing communication control for the data-compliant system.

Wherein the at least one interface is: 16 interfaces from JS1 to JS 16; the first interface is a JS17 interface; the second interface is a main RS232 interface.

Wherein, the communication control device further comprises:

and the slave RS232 interface is used for connecting with the PET upper computer.

Wherein, the communication control device further comprises:

and the differential output functional interface is used for outputting the clock differential signal and the synchronous clock differential signal.

Wherein, the communication control device is a programmable logic controller.

An embodiment of the present invention further provides an apparatus including the above communication control device, where the apparatus further includes: a front-end electronics system connected to a first port unit of the communication control device; and the data conforming system is connected with the second port unit of the communication control device.

The embodiment of the invention also provides a communication control method, which is applied to a communication control device and comprises the following steps:

sending a clock signal and a synchronous clock signal to a front-end electronic system through a first port unit of the communication control device;

and sending a clock signal, a synchronous clock signal and a communication control signal to a data conforming system through a second port unit of the communication control device.

Wherein a difference in clock rising edges of respective interfaces in the first port unit is less than 2 milliseconds.

Wherein, the positive pulse period of the synchronous clock of each interface in the first port unit has a rising edge of a clock.

The technical scheme of the invention has the following beneficial effects:

in the above scheme, the first port unit of the communication control device is connected with the front-end electronics system of the PET, and the second port unit is connected with the data coincidence system of the PET, so that a communication channel can be provided for the front-end electronics system, communication with the front-end electronics system and the data coincidence system can be established, and further high-precision PET measurement can be realized.

Drawings

Fig. 1 is a schematic structural diagram of a communication control apparatus according to the present invention;

fig. 2 is a schematic configuration diagram of an apparatus including the communication control device shown in fig. 1.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a communication control apparatus 1 according to the present invention includes: a first port unit 11 for connecting to the front-end electronics of the PET and providing a clock and a synchronization clock for the front-end electronics 16; a second port unit for interfacing with the PET's data-conforming system 15 and providing a clock, a synchronizing clock, and communication controls for the data-conforming system. Wherein the first port unit 11 includes: the system is connected with at least one module unit of the PET front-end electronics system in a one-to-one correspondence manner, and provides at least one interface of a clock and a synchronous clock for the at least one module unit; wherein the at least one interface is: 16 interfaces from JS1 to JS 16;

the second port unit includes: a first interface connected to the data compliant system 15 and providing a clock and a synchronized clock for the data compliant system 15, as shown in fig. 1, the first interface is a JS17 interface 12, and a second interface connected to the data compliant system 15 and providing communication control for the data compliant system, as shown in fig. 1, the second interface is a main RS232 interface 13.

Preferably, the communication control apparatus 1 further includes: and the slave RS232 interface 14 is used for being connected with the upper computer 17 of the PET.

Preferably, as shown in fig. 2, the communication control apparatus 1 further includes: the communication control device further comprises a power supply 19, the working voltage of the power supply is 5V, the power consumption of the device can be achieved as long as the current is measured, and the power consumption of the device is low and is less than 0.6A as measured through experiments.

The communication control device 1 is preferably a programmable logic controller, and preferably may adopt a developed programmable logic device spartan3-700AN, and the compiled VHDL code is compiled and then downloaded to the FPGA through a JTAG port.

In summary, in the communication control device of the present invention, JS1 to JS16 may provide synchronous clocks and channels of the clocks for 16 buffer groups in the PET front-end electronics system, so as to implement multi-channel clock distribution, and JS17 is used to connect the data coincidence system in the PET, and provide the clocks and the synchronous clocks for the data coincidence system; the main RS232 is used for connecting a data coincidence system in the PET and providing communication control for the data coincidence system; the slave RS232 is used for connecting a maintenance control system in the PET and connecting an upper computer, and debugging of a PET front-end electronic system is realized.

The communication control device of the invention utilizes the field programmable gate array device control circuit, not only can provide communication channels for the upper computer and the front-end electronic system, but also adopts the programmable logic device to replace an analog device, so that the delay is reduced, the synchronization error among 16 BUCKET groups of the front-end electronic system of PET is lower than 2ns, further the high-precision PET measurement can be realized, the communication with the front-end electronic system and a data coincidence system is realized, the setting of parameters, the setting of working modes, the acquisition of data and the like are realized. Furthermore, the device of the invention CAN conveniently improve the communication speed due to the programmability of the FPGA, and/or other communication controllers CAN realize connection, such as a CAN interface card, USB equipment and the like.

As further shown in fig. 2, an embodiment of the present invention further provides an apparatus of the communication control device 1, where the apparatus further includes: a PET front-end electronics system 16 connected to the first port unit 11 of the communication control device; the PET data connected to the second port unit of the communication control device corresponds to the system 15.

The equipment also utilizes a field programmable gate array device control circuit, not only can provide a communication channel (for providing a clock and a synchronous clock signal) for an upper computer and a front-end electronic system, but also adopts a programmable logic device to replace an analog device, so that the delay is reduced, the synchronism error between 16 BUCKET groups of the front-end electronic system of the PET is lower than 2ns, further the high-precision PET measurement can be realized, the communication with the front-end electronic system and a data coincidence system is realized, the setting of parameters, the setting of working modes, the acquisition of data and the like are realized. Furthermore, the device of the invention CAN conveniently improve the communication speed due to the programmability of the FPGA, and/or other communication controllers CAN realize connection, such as a CAN interface card, USB interface equipment and the like.

On the other hand, an embodiment of the present invention further provides a communication control method applied to the communication control apparatus 1, including:

sending a clock signal and a synchronous clock signal to a front-end electronics system of the PET through a first port unit of the communication control device 1;

and sending a clock signal, a synchronous clock signal and a communication control signal to the PET data coincidence system through a second port unit of the communication control device.

Preferably, the difference between the clock rising edges of the respective ports (e.g., JS1-JS 16) in the first port unit is less than 2 milliseconds.

Preferably, there is a rising edge of the clock during the positive pulse of the synchronous clock of each of the ports (e.g., JS1-JS 16) in the first port unit.

It is to be noted that; in this method embodiment, all the features of the communication control apparatus shown in fig. 1 and fig. 2 are applicable to this method embodiment, and the same technical effect can be achieved, which is not described herein again.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A communication control apparatus, comprising:

the second port unit is used for connecting with a data conforming system and providing a clock, a synchronous clock and communication control for the data conforming system;

the first port unit includes: the front-end electronic system is connected with at least one module unit of the front-end electronic system in a one-to-one correspondence manner, and provides at least one interface of a clock and a synchronous clock for the at least one module unit;

the second port unit includes: a first interface connected to the data compliant system and providing a clock and a synchronous clock for the data compliant system, and a second interface connected to the data compliant system and providing communication control for the data compliant system.

2. The communication control apparatus according to claim 1, wherein the at least one interface is: 16 interfaces from JS1 to JS 16; the first interface is a JS17 interface; the second interface is a main RS232 interface.

3. The communication control apparatus according to claim 2, characterized by further comprising:

and the slave RS232 interface is used for being connected with a positron emission type computer tomography PET upper computer.

4. The communication control apparatus according to claim 3, characterized by further comprising:

5. The communication control device according to claim 1, wherein the communication control device is a programmable logic controller.

6. An apparatus comprising the communication control device according to any one of claims 1 to 5, characterized in that the apparatus further comprises:

a front-end electronics system connected to a first port unit of the communication control device;

and the data conforming system is connected with the second port unit of the communication control device.

7. A communication control method applied to a communication control device is characterized by comprising the following steps:

sending a clock signal, a synchronous clock signal and a communication control signal to a data conforming system through a second port unit of the communication control device;

wherein the first port unit comprises: the front-end electronic system is connected with at least one module unit of the front-end electronic system in a one-to-one correspondence mode, and at least one interface for providing a clock and a synchronous clock for the at least one module unit;

8. The communication control method according to claim 7, wherein a difference in clock rising edges of the respective interfaces in the first port unit is less than 2 msec.

9. The communication control method according to claim 7, wherein a rising edge of one clock is present during a positive pulse of the synchronous clock of each interface in the first port unit.