CN109864755A - A kind of single photon emission computed tomography device is linear and spatial discrimination force tester - Google Patents
A kind of single photon emission computed tomography device is linear and spatial discrimination force tester Download PDFInfo
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- CN109864755A CN109864755A CN201910263267.2A CN201910263267A CN109864755A CN 109864755 A CN109864755 A CN 109864755A CN 201910263267 A CN201910263267 A CN 201910263267A CN 109864755 A CN109864755 A CN 109864755A
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- screening arrangement
- wolfram steel
- storehouse
- fixed
- control system
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Abstract
The present invention relates to a kind of single photon emission computed tomography device is linear and spatial discrimination force tester, including bracket, screening arrangement, screening arrangement control system and tele-control system；Bracket is used to support screening arrangement and screening arrangement control system by wired connection, and screening arrangement control system is by being wirelessly connected tele-control system；Screening arrangement includes PC pedestal, the left-half of PC pedestal covers lower baffle equipped with wolfram steel top cover, intershield body and wolfram steel, the intershield body include wolfram steel set and be arranged in wolfram steel set in customization measuring cup, PC sliding block is provided in PC pedestal, wolfram steel set lower baffle is fixed on PC sliding block, the positive and negative rotation of motor drives PC sliding block to horizontally slip, and then wolfram steel set lower baffle is driven to block or do not block the bottom of wolfram steel set, and touch the precise positioning that travel switch realizes wolfram steel set lower baffle in conjunction with stop.
Description
Technical field
The present invention relates to radiation protection field more particularly to a kind of single photon emission computed tomography devices linearly to divide with space
Distinguish force tester.
Background technique
" radionuclide imaging equipment performance and test code gamma camera " GB/T18989- according to national standards
2013, NEMA standard publication gamma camera performance test (NEMA NU 1Performance Measurements of
Gamma Cameras) and health industry standard " gamma camera, single photon emission tomographic imaging equipment that will issue
(SPECT) quality controls inspection criterion ", in carrying out the control of SPECT equipment quality and performance detection, need intrinsic spatial discrimination
Power and built-in linear index carry out on-site test.The radiopharmaceutical needed in testing due to this 2 indexs99mTc activity compared with
Greatly, it is substantially all in 370MBq or so,99mThe energy peak energy that Tc launches gamma ray is 0.140MeV, to SPECT equipment quality
The exposure dose of the testing staff of control is bigger, and dosage rate maximum value is in 10mSv/h or more at radioactive source 5mm.
The scheme substantially taken when testing intrinsic spatial resolution and built-in linear index at present is performed manually by placement
Radioactive source, and be naked source, without safeguard procedures.
Summary of the invention
It is an object of the present invention in place of solving the above deficiencies in the existing technologies.
To achieve the above object, the present invention provides that a kind of single photon emission computed tomography device is linear and spatial resolution
Tester, including bracket, screening arrangement, screening arrangement control system and tele-control system；Bracket is used to support by wired
The screening arrangement and screening arrangement control system of connection, screening arrangement control system is by being wirelessly connected tele-control system；Screen
Device is covered including at least PC pedestal, and PC pedestal includes sliding motion storehouse and the motor control storehouse in front of sliding motion storehouse；It is sliding
The left-half of dynamic motion storehouse is provided with PC sliding block, and wolfram steel set lower baffle is fixed in the left-half of PC sliding block, PC sliding block
Micro-motion slidable rack gear is fixed with by rack gear fixed screw on right half part；The centre in sliding motion storehouse is provided with locating piece, leads to
Locating piece is crossed to be screwed；The right half part in sliding motion storehouse, which is provided with, to be retreated stop and touches travel switch and advance stop is light
Travel switch is touched, the top of micro-motion slidable rack gear is fixed on, wherein retreats stop and touches the side that travel switch is fixed on locating piece
The right side that travel switch is located at micro-motion slidable rack gear is touched in wall upper end, and the rear wall in snug sliding movement storehouse, advance stop；Electricity
Machine control storehouse is connected to the right half part in sliding motion storehouse, and micromotor is fixed on motor fixing frame, and motor fixing frame is fixed
On partition between motor control storehouse and sliding motion storehouse, the rear end of micromotor connects fine motion pinion gear, fine motion pinion gear
It links with micro-motion slidable rack pinion.
Preferably, screening arrangement further includes wolfram steel top cover, intershield body and wolfram steel set lower baffle composition, among this
Shield include wolfram steel set and be arranged in wolfram steel set in customization measuring cup.
Preferably, it is additionally provided with upper cover on PC pedestal, screening arrangement installing port is provided on the left of PC upper cover, PC upper cover
Right side is provided with the fixed part projected upwards, and the cross bar via hole through the left and right sides is provided on fixed part, for across bracket
Cross bar.
Preferably, cross bar screw hole is additionally provided on fixed part, cross bar manual control screw is screwed into cross bar screw hole, for fixing
Cross bar.
Preferably, it is provided with external equipment air plug mouth-male connector on the shell in motor control storehouse, is provided on power controling box
Shielded signal line is provided with external equipment air plug mouth-female on shielded signal line, and male connector is mating makes with external equipment air plug mouth-
With.
Preferably, the control system of screening arrangement receives remote control terminal by the opening and closing of motor control lower baffle plate
The instruction sent.
The present invention is by wireless telecommunications, and in combination with retreating, travel switch is touched in stop and travel switch is touched in advance stop
Automatically control the accurate opening and closing of the wolfram steel set lower baffle below screening arrangement.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of tripod provided in an embodiment of the present invention；
Fig. 2 is a kind of perspective view of the explosion of shielding harness provided in an embodiment of the present invention；
Fig. 3 is a kind of appearance diagram of shielding harness provided in an embodiment of the present invention；
The schematic diagram of internal structure of Fig. 4 bit mask system；
Fig. 5 is a kind of cross-sectional view of screening arrangement provided in an embodiment of the present invention；
Fig. 6 illustrates fine motion pinion gear, the positional relationship of PC sliding block and rack gear fixed screw when closure；
The positional relationship of fine motion pinion gear and PC sliding block when Fig. 7 illustrates to open；
Fig. 8 is a kind of schematic diagram for retreating stop and touching travel switch control motor provided in an embodiment of the present invention；
Fig. 9 power controling box schematic diagram of internal structure.
Specific embodiment
With reference to the accompanying drawings and examples, technical scheme of the present invention will be described in further detail.
Such as Fig. 1-9, the embodiment of the present invention provides that a kind of single photon emission computed tomography device is linear and spatial resolution
Tester, including bracket, shielding harness, the control system of shielding harness, tele-control system.
Wherein bracket will be formed by by tripod, vertical bar and cross bar, and wherein vertical bar is perpendicular stands upright on tripod, cross bar setting
On vertical bar.Wherein cross bar cooperates shielding harness dedicated slot, prevents equipment from falling off.Due to needing that radioactive source is put in detection process
The distance of distance SPECT detecting head surface 1.5m or more is set, so the main function of bracket is screening arrangement to be placed into distance ground
More than the distance of face 2.4m and play the role of support.
Screening arrangement: wolfram steel top cover 2, intershield body and wolfram steel set lower baffle 10 are included at least and is formed, among this
Shield includes the customization measuring cup 3 that wolfram steel covers 4 and is arranged in wolfram steel set.
High strength polycarbonates (Polycarbonate, PC) upper cover 5, the left side of PC upper cover 5 are provided with screening arrangement installation
Mouthful, the right side of PC upper cover 5 is provided with the fixed part projected upwards, the cross bar via hole through the left and right sides is provided on fixed part
17, for the cross bar across bracket.
In one example, cross bar screw hole 16 is additionally provided on fixed part, cross bar manual control screw 15 is screwed into cross bar screw
Hole 16 is used for fixed transverse rod.
Screening arrangement further includes PC pedestal, and PC pedestal includes sliding motion storehouse 13 and the electricity positioned at 13 front of sliding motion storehouse
Machine controls storehouse 27.Wherein, PC upper cover 5 is fastened by PC upper cover screw 18 and PC pedestal.
The left-half in sliding motion storehouse 13 is provided with PC sliding block 11, and wolfram steel set is fixed in the left-half of PC sliding block 11
Lower baffle 10 is fixed with micro-motion slidable rack gear 20 by rack gear fixed screw 19 on the right half part of PC sliding block 11.
The centre in sliding motion storehouse 13 is provided with locating piece 23, fixed with screw 21 by locating piece.
The right half part in sliding motion storehouse 13, which is provided with, to be retreated stop and touches travel switch 24 and stroke is touched in advance stop
Switch 25 is fixed on the top of micro-motion slidable rack gear 20, wherein retrogressing stop touches travel switch 24 and is fixed on locating piece 23
Sidewall upper, and the rear wall in snug sliding movement storehouse 13, advance stop touch travel switch 25 and are located at micro-motion slidable rack gear 20
Right side.
Motor control storehouse 27 is connected to the right half part in sliding motion storehouse 13, and micromotor 9-1 is fixed on motor fixing frame 8
On, motor fixing frame 8 is fixed on the partition between motor control storehouse 27 and sliding motion storehouse 13, the rear end of micromotor 9-1
Fine motion pinion gear 6, fine motion pinion gear 6 and 20 gear-linked of micro-motion slidable rack gear are connected,
Locating piece 23 is fixed on the groove in sliding motion storehouse 13 by using the locating piece screw of screw 21 and the other end
Centre, after fixed, PC sliding block 11 is pushed down by this locating piece 23, prevents PC sliding block 11 from moving up and down.
As shown in fig. 6, the rotating in the forward direction by micromotor 9-1 of fine motion pinion gear 6, makes its own have transmission kinetic energy,
Because fine motion pinion gear 6 and micro-motion slidable rack gear 20 are the meshing relations between gear, when fine motion pinion gear 6 is rotated, drive
PC sliding block 11 and wolfram steel set lower baffle 10 are moved to 13 left end of sliding motion storehouse, when wolfram steel set lower baffle 10 is completely by tungsten
After the covering of 4 bottom of steel bushing, the touch screw 34 on PC sliding block 11 has just encountered retrogressing stop and has touched travel switch 24, after
It moves back stop and touches the signal feedback device of travel switch 24 and stop working, all part stop motions, wherein touch 34, screw
In 11 rear end of PC sliding block, and it is located at right end.
As shown in fig. 7, after fine motion pinion gear 6 reversely rotates, because fine motion pinion gear 6 and micro-motion slidable rack gear 20 are gears
Between meshing relation driven PC sliding block 11 and wolfram steel to cover lower baffle 10 to sliding when fine motion pinion gear 6 is rotated backward
13 right end of motion storehouse is moved, and after wolfram steel is covered 4 bottoms without any blockage completely by wolfram steel set lower baffle 10, PC sliding block 11 is just
Easily to encounter advance stop and touches travel switch 25, the signal feedback device that travel switch 25 is touched in advance stop stops working,
All parts stop.
It is provided with external equipment air plug mouth-male connector 28 on the shell 29 in motor control storehouse 27, is arranged on power controling box 32
There is shielded signal line 31, external equipment air plug mouth-female 30 is provided on shielded signal line 31, with external equipment air plug mouth-public affairs
First 28 match.
Travel switch 24 is touched in retrogressing stop, advance stop touches travel switch 25 and all connects external equipment boat by conducting wire
Socket-male connector 28 realizes the communication with control system.
The control system of screening arrangement: mainly having the opening and closing of motor control lower baffle plate, receives remote control terminal
The instruction sent, receiving instruction mode includes the modes such as WIFI and bluetooth
The main purpose of this practicability: under the idle state of equipment, wolfram steel set 10 lower baffle plate 10 of lower baffle is closure
, it is open in the state of work.Since lower baffle plate is that wolfram steel is made into, closure when, can achieve shielding ray
Effect.
The instruction of received remote control terminal refers to the instruction of seat in the plane, upper seat in the plane include laptop or plate or
Person's mobile phone.This instruction is exactly simplest instruction: opening and closing.The other end is linear in the whole device of linear tester
Box is controlled, inside contains battery, wireless receiving module and circuit board, circuit board is provided with including single-chip microcontroller
Control circuit including STM32F103C8T6,
Such as Fig. 9, battery case lower casing 58 and battery case upper casing 53 are fixed together by 4 battery case lock screws 59, shape
At battery case, in the battery inside, power supply circuit board 55 is fixed on battery case upper casing 53 by 4 power supply circuit board screws 56
On, it is additionally provided with rechargeable battery 57 between power supply circuit board 55 and battery case lower casing 58, is also set up on battery case upper casing 53
There is band buckle voltmeter 50, battery case upper casing 53 is also fixed with self-lock switch 60 and reset switch 61 by M12 thin nut 60-1,
The side of battery case upper casing 53 is fixed with charge power supply interface 66 by charge power supply screw 67, solid by aviation plug screw 69
Surely there is aviation plug 68
The course of work:
Self-lock switch 60 is pressed, the electricity of rechargeable battery 57 can be shown with buckle voltmeter 50, is opened either manually or by reset
Close 61 or upper seat in the plane send close command to control system through wireless communication, C wolfram steel covers lower baffle 10 to moving to left
Dynamic, when wolfram steel is covered the covering of 4 bottoms completely by wolfram steel set lower baffle 10, the rack gear fixed screw 19 on PC sliding block 11 is just touched
It has arrived retrogressing stop and has touched travel switch 24, retreated stop and touch travel switch 24 to singlechip feedbsck signal in place, single-chip microcontroller
Terminate the rotation of micromotor 9-1, all part stop motions.
Press self-lock switch 60, the electricity of the meeting display unit 57 of component 50, either manually or by reset switch 61 or upper seat in the plane
Open instructions is sent to control system through wireless communication, C wolfram steel set lower baffle 10 moves right, when wolfram steel covers lower gear
Plate 10 does not block wolfram steel completely and covers the covering of 4 bottoms, has just encountered advance stop positioned at PC sliding block 11 and has touched travel switch 25, preceding
Travel switch 25 is touched to singlechip feedbsck signal in place into stop, single-chip microcontroller terminates the rotation of micromotor 9-1, and all zero
Part stop motion.
Wireless receiving module is WIFI or bluetooth module, the instruction of seat in the plane in reception.
Above-mentioned all trigger actions can both be handled by processor, can also be realized by logic circuit, such as Fig. 8 institute
The circuit diagram shown, for retreating stop and touch travel switch 24, during horizontally slipping, retrogressing stop is touched stroke and is opened
The signal for closing 24 connects relay RELAY, when there is no touch-control to touch travel switch 24 to retrogressing stop, relay RELAY's
Input terminal is low level, selects the S1 conducting of switch, and motor continuous running, device slides to the left, when control is touched to stop is retreated
When travel switch 24, the input terminal of relay RELAY is to become high level, selects the S1 of switch to disconnect, connects the motor of lead screw
Place circuit disconnects, and shuts down, and the corresponding actions of other parts are similar, is switched using relay and selection, passes through conjunction
Suitable logic circuit can realize corresponding action response
Above specific embodiment has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Illustrate, it should be understood that the above is only a specific embodiment of the invention, the protection model that is not intended to limit the present invention
It encloses, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (6)
1. a kind of single photon emission computed tomography device is linear and spatial discrimination force tester, which is characterized in that including bracket,
Screening arrangement, screening arrangement control system and tele-control system；
The bracket is used to support screening arrangement and screening arrangement control system by wired connection, screening arrangement control system
By being wirelessly connected tele-control system；
The screening arrangement include at least PC pedestal, the PC pedestal include sliding motion storehouse (13) and be located at sliding motion storehouse
(13) the motor control storehouse (27) in front of；
The left-half in sliding motion storehouse (13) is provided with PC sliding block (11), is fixed with wolfram steel in the left-half of PC sliding block (11)
It covers lower baffle (10), is fixed with micro-motion slidable rack gear by rack gear fixed screw (19) on the right half part of PC sliding block (11)
(20)；
The centre of the sliding motion storehouse (13) is provided with locating piece (23), fixed with screw (21) by locating piece；
The right half part of the sliding motion storehouse (13), which is provided with, to be retreated stop and touches travel switch (24) and advance stop is touched
Travel switch (25), is fixed on the top of micro-motion slidable rack gear (20), wherein retrogressing stop is touched travel switch (24) and is fixed on
Travel switch (25) position is touched in the sidewall upper of locating piece (23), and the rear wall of snug sliding movement storehouse (13), advance stop
In the right side of micro-motion slidable rack gear (20)；
Motor control storehouse (27) is connected to the right half part of sliding motion storehouse (13), and micromotor (9-1) is fixed on motor and fixes
On frame (8), motor fixing frame (8) is fixed on the partition between motor control storehouse (27) and sliding motion storehouse (13), micro electric
The rear end of machine (9-1) connects fine motion pinion gear (6), fine motion pinion gear (6) and micro-motion slidable rack gear (20) gear-linked.
2. single photon emission computed tomography device according to claim 1 linearly and spatial discrimination force tester, spy
Sign is that the screening arrangement further includes wolfram steel top cover (2), intershield body and wolfram steel set lower baffle (10), centre screen
Cover the customization measuring cup (3) that body includes wolfram steel set (4) and is arranged in wolfram steel set.
3. single photon emission computed tomography device according to claim 1 linearly and spatial discrimination force tester, spy
Sign is, is additionally provided on the PC pedestal upper cover (5), and screening arrangement installing port, PC upper cover are provided on the left of PC upper cover (5)
(5) it is provided with the fixed part projected upwards on the right side of, the cross bar via hole (17) through the left and right sides is provided on fixed part, is used for
Across the cross bar of bracket.
4. single photon emission computed tomography device according to claim 3 linearly and spatial discrimination force tester, spy
Sign is, is additionally provided on the fixed part cross bar screw hole (16), and cross bar manual control screw (15) is screwed into cross bar screw hole (16),
For fixed transverse rod.
5. single photon emission computed tomography device according to claim 1 linearly and spatial discrimination force tester, spy
Sign is, external equipment air plug mouth-male connector (28), power controling box are provided on the shell (29) of the motor control storehouse (27)
(32) it is provided on shielded signal line (31), external equipment air plug mouth-female (30) is provided on shielded signal line (31), and it is outer
Equipment air plug mouth-male connector (28) is connect to match.
6. single photon emission computed tomography device according to claim 1 linearly and spatial discrimination force tester, spy
Sign is that the control system of the screening arrangement receives long-range control by the opening and closing of motor control wolfram steel set lower baffle plate
Hold the instruction sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910263267.2A CN109864755A (en) | 2019-04-03 | 2019-04-03 | A kind of single photon emission computed tomography device is linear and spatial discrimination force tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910263267.2A CN109864755A (en) | 2019-04-03 | 2019-04-03 | A kind of single photon emission computed tomography device is linear and spatial discrimination force tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109864755A true CN109864755A (en) | 2019-06-11 |
Family
ID=66921979
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910263267.2A Pending CN109864755A (en) | 2019-04-03 | 2019-04-03 | A kind of single photon emission computed tomography device is linear and spatial discrimination force tester |
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Citations (7)
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| FR1307744A (en) * | 1961-12-08 | 1962-10-26 | Lemer & Cie | Shielded enclosures for handling radioactive products |
| US4195229A (en) * | 1977-01-05 | 1980-03-25 | Tokyo Shibaura Electric Co., Ltd. | X-ray photographing apparatus |
| CN2439714Y (en) * | 2000-07-10 | 2001-07-18 | 萧祖贻 | (60)Co-gama rays source device |
| CN2833569Y (en) * | 2005-09-22 | 2006-11-01 | 清华同方威视技术股份有限公司 | Apparatus for performing CT safety detection of liquid by using ray source |
| CN106483554A (en) * | 2016-10-28 | 2017-03-08 | 中国计量科学研究院 | Detecting system |
| CN210095757U (en) * | 2019-04-03 | 2020-02-21 | 刘汉臣 | Linear and spatial resolution tester for single photon emission computed tomography device |
| US20200126682A1 (en) * | 2017-04-17 | 2020-04-23 | Our United Corporation | Radioactive source removing and introducing tooling, smart cart and source removing and introducing system |
-
2019
- 2019-04-03 CN CN201910263267.2A patent/CN109864755A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1307744A (en) * | 1961-12-08 | 1962-10-26 | Lemer & Cie | Shielded enclosures for handling radioactive products |
| US4195229A (en) * | 1977-01-05 | 1980-03-25 | Tokyo Shibaura Electric Co., Ltd. | X-ray photographing apparatus |
| CN2439714Y (en) * | 2000-07-10 | 2001-07-18 | 萧祖贻 | (60)Co-gama rays source device |
| CN2833569Y (en) * | 2005-09-22 | 2006-11-01 | 清华同方威视技术股份有限公司 | Apparatus for performing CT safety detection of liquid by using ray source |
| CN106483554A (en) * | 2016-10-28 | 2017-03-08 | 中国计量科学研究院 | Detecting system |
| US20200126682A1 (en) * | 2017-04-17 | 2020-04-23 | Our United Corporation | Radioactive source removing and introducing tooling, smart cart and source removing and introducing system |
| CN210095757U (en) * | 2019-04-03 | 2020-02-21 | 刘汉臣 | Linear and spatial resolution tester for single photon emission computed tomography device |
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