CN109632842A - A kind of the CT detector and its application method of module serial structure - Google Patents
A kind of the CT detector and its application method of module serial structure Download PDFInfo
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- CN109632842A CN109632842A CN201811631833.2A CN201811631833A CN109632842A CN 109632842 A CN109632842 A CN 109632842A CN 201811631833 A CN201811631833 A CN 201811631833A CN 109632842 A CN109632842 A CN 109632842A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Testing Or Calibration Of Command Recording Devices (AREA)
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Abstract
The invention discloses a kind of CT detectors of module serial structure, including several detector modules, it is connected in series between several described detector modules, each detector module, which is all connected with independent connection, supply lines, the present invention provides a kind of at low cost, stable and the module serial structure of favorable expandability CT detectors and its application method.
Description
Technical field
The present invention relates to medical machinery field, it is more particularly to CT detector and its user of a kind of module serial structure
Method.
Background technique
Detector is the core component of CT system, the framework and stability of detector often determine whole system framework and
Stability.Existing detector framework goes the multiple modules of parallel control usually using a ultra-large asic chip.It is this kind of
Asic chip is at high price, to keep the cost of entire detector very high.The technology of present FPGA field-programmable gate array
It is horizontal constantly to upgrade, tens the G even high-speed transmission interface of several hundred G are generally comprised in FPGA.This is also serial detector module
The scheme of connection is laid a good foundation.
Parallel form is also additional simultaneously increases the signal connected between many plates.Since detector is usually constructed with tens
A modules a or even up to a hundred, the line of enormous amount can assembling, maintenance and stability to detector can all generate it is very big
It influences.
Using parallel form while consuming huge ASIC resource, the redundancy of the utilization of resources is reduced, in difference
System between can not often find general design, when needing to design the detector of a more pixels, need to set again
Meter and exploitation, to increase the cost of enterprise operation.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of at low cost, stablize and the module of favorable expandability is serially tied
The CT detector and its application method of structure.
To achieve the above object, the present invention provides the following technical scheme that a kind of CT detector of module serial structure, packet
Several detector modules are included, are connected in series between several described detector modules, each detector module is all connected with
Independent connection has supply lines.
It is connected between the further adjacent detector module by high speed connecting line.
Connection between the further adjacent detector module uses high-speed transceiver.
A kind of its application method of the CT detector of module serial structure, including it is as follows, CT is powered on, first between detector module
Advanced line link training；The setting of detector module serial number and initialization；It is passed under initialization directive；Upload this last detector module
Serial number；Position adaptively terminates；Each detector module enters data acquisition state；Data collect local RAM；It uploads last
The serial number of this module；Judge whether data are averaged according to all completions, be, data will be transmitted by HSSI High-Speed Serial Interface
To next stage, otherwise the data in RAM will not be uploaded, but taken subsequent renew of average value with freshly harvested data and be put into
In local RAM, data pipeline is uploaded.
In conclusion the present invention is connected detector module using high speed data link step by step, the letter between detector module
Number 6 are reduced to by original 20, so as to use ultralow logical resource ASIC, reduce cost, in each detector module
Programming device integrated adaptive module position algorithm needs spirit according to system under the premise of not needing other systems change
Configuration module number living, the signal wire that detector module needs grafting connected is few, and stability is good.
Detailed description of the invention
Fig. 1 is serial detector connection schematic diagram；
Fig. 2 is that position is adaptive and data pipeline uploads flow chart.
Mark explanation: 1, high speed connecting line；2, detector module；3, supply lines.
Specific embodiment
The embodiment of the CT detector to a kind of module serial structure of the present invention and its application method is made referring to Figures 1 and 2
It further illustrates.
A kind of CT detector of module serial structure, including several detector modules 2, several described detector modules
It is connected in series between 2 by high speed connecting line 1, each detector module 2, which is all connected with independent connection, supply lines 3.
After CT is powered on, link training can be carried out between detector module 2 first.Training is by sending mutually specified binary system
Realize, if receiving the midamble code that the other end formulates quantity, can set link state position, show that link is available；
After waiting whole system to power on, host computer can send out a detector initialization directive, and area is specified in initialization directive
Domain includes the serial number of a upper detector module 2, when detector module 2 obtains initialization directive, will add a work with the serial number
For the serial number of oneself, while the serial number is substituted into initialization directive；
Whether the position link state position that judgement can be connected by detector module 2 when obtaining this message with rear class is normal, if
It is normal then pass initialization directive under continuing；
Last detector module 2 can equally add the serial number in initialization directive one to be used as certainly after obtaining initialization directive
Oneself serial number.Simultaneously because link state position is then zero without next stage detector module 2.Refer at this time receiving initialization
The serial number of oneself can be inserted after order, while return the message；
Message is uploaded step by step by each detector module 2, in serial number and passback message of each detector module 2 by comparing oneself
Serial number, to know oneself position in entire detector.Position adaptively terminates since then；
After initialization terminates, entire detector enters working condition.Host computer can be by broadcasting or module being specified to write
Instruction operates detector module 2.After the acquisition of host computer broadcast data, each detector module 1 will be according to the time of integration
Rising edge carries out data acquisition；
When the time of integration arrives, FPGA collects the data that each A/D chip comes, this is put into after carrying out data rearrangement
In the RAM resource of body；
If necessary to which the data of several times of integration are carried out average value (noise for reducing the acquisition of A/D chip), then under
When one time of integration arrives, the data in RAM will not be uploaded, but be continued after taking average value with freshly harvested data
It is stored in local RAM；
When next time of integration rising edge arrives, if data are averaged according to all completions, data will pass through high speed
Serial line interface is transferred to next stage.Data freshly harvested at this time will continue to be stored in local RAM, carry out taking for new data
Average treatment.
Since then, each detector module 2 takes average processing through row in the form of assembly line, while data are also with the shape of assembly line
Formula transmits
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of CT detector of module serial structure, it is characterized in that: including several detector modules, several described detections
It is connected in series between device module, each detector module, which is all connected with independent connection, supply lines.
2. the CT detector of a kind of module serial structure according to claim 1, it is characterized in that: the adjacent detector
It is connected between module by high speed connecting line.
3. the CT detector of a kind of module serial structure according to claim 1, it is characterized in that: the adjacent detector
Connection between module uses high-speed transceiver.
4. a kind of its application method of the CT detector of module serial structure, it is characterized in that: including as follows,
(1) CT is powered on, and carries out link training between detector module first；
(2) setting of detector module serial number and initialization；
(3) it is passed under initialization directive；
(4) serial number of this last detector module is uploaded；
(5) position adaptively terminates；
(6) each detector module enters data acquisition state；
(7) data collect local RAM；
(8) serial number of this last detector module is uploaded；
(9) judge whether data are averaged according to all completions, be, data will be transferred to next by HSSI High-Speed Serial Interface
Grade, otherwise the data in RAM will not be uploaded, but taken subsequent renew of average value with freshly harvested data and be put into local
In RAM；
(10) data pipeline uploads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631833.2A CN109632842B (en) | 2018-12-29 | 2018-12-29 | CT detector with module serial structure and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631833.2A CN109632842B (en) | 2018-12-29 | 2018-12-29 | CT detector with module serial structure and use method thereof |
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| Publication Number | Publication Date |
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| CN109632842A true CN109632842A (en) | 2019-04-16 |
| CN109632842B CN109632842B (en) | 2023-09-12 |
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| CN201811631833.2A Active CN109632842B (en) | 2018-12-29 | 2018-12-29 | CT detector with module serial structure and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111324070A (en) * | 2020-03-04 | 2020-06-23 | 明峰医疗系统股份有限公司 | Debugging method of CT serial detector module cluster based on FPGA |
| CN112732629A (en) * | 2020-12-31 | 2021-04-30 | 明峰医疗系统股份有限公司 | CT detector data transmission structure and data transmission method based on source synchronous LVDS-SERDES |
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| CN1902596A (en) * | 2003-12-31 | 2007-01-24 | 英特尔公司 | Programmable measurement mode for a serial point to point link |
| CN1700701A (en) * | 2004-05-21 | 2005-11-23 | 英特尔公司 | Method and apparatuses for the physical layer initialization of a link-based system interconnect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111324070A (en) * | 2020-03-04 | 2020-06-23 | 明峰医疗系统股份有限公司 | Debugging method of CT serial detector module cluster based on FPGA |
| CN112732629A (en) * | 2020-12-31 | 2021-04-30 | 明峰医疗系统股份有限公司 | CT detector data transmission structure and data transmission method based on source synchronous LVDS-SERDES |
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| Publication number | Publication date |
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| CN109632842B (en) | 2023-09-12 |
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