CN101966369B - Intelligent joint protection control system for medicinal linear accelerator - Google Patents
Intelligent joint protection control system for medicinal linear accelerator Download PDFInfo
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- CN101966369B CN101966369B CN201010523029A CN201010523029A CN101966369B CN 101966369 B CN101966369 B CN 101966369B CN 201010523029 A CN201010523029 A CN 201010523029A CN 201010523029 A CN201010523029 A CN 201010523029A CN 101966369 B CN101966369 B CN 101966369B
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Abstract
The invention discloses an intelligent joint protection control system for a medicinal linear accelerator. The central thought is that: an auxiliary joint protection system is established and is used for monitoring water temperature and hydraulic pressure in a water cooling system of the medicinal linear accelerator, air pressure in a filled waveguide system, current of a titanium pump power supply, and faults of a switch on a shielding lead door for a treatment room and each subsystem, and determining corresponding operation according to the fault types so as to conveniently realize patient protection interlocking, machine interlocking and faulty operation interlocking.
Description
Technical field
The present invention relates to medical apparatus and instruments medical electronic linear accelerator technical field, be specifically related to a kind of intelligence connection that is used for clinac and protect control system.
Background technology
Connection is set in clinac, and to protect control system be in order to guarantee patient, operator's safety, and protect machine between the daily operating period, is the requisite function of accelerator.Connection is protected in the control system needs to consider various factors, and for example, it is the various harm that may occur in the machine works process that patient protects interlocking, shines and mechanical damage as overtreatment, and guarantees patient's accurate treatment; It is in order to prevent the issuable wrong treatment of operator's maloperation that some interlockings are arranged; Machine interlocking is for closing machine at once when machine components and parts or subsystem are out of order, and prevents that mechanical disorder from further enlarging.Connection is protected control system not only needs to guarantee patient safety and machine safety, because the accelerator interlocking signal is a lot, after breaking down, be difficult to fault is judged and located, solution to fault is unfavorable, and therefore connection is protected control system also needs fault is positioned, and gets rid of to assist carrying out fault.
But, also do not have a kind of clinac connection that can satisfy above-mentioned requirements to protect control system at present.
Summary of the invention
In view of this; the invention provides a kind of intelligence connection that is used for clinac and protect control system; by the each several part fault in the detection of straight lines accelerator and carry out corresponding operating; thereby the part or all of function of closing machine; realized that patient protects interlocking, machine interlocking, maloperation interlocking, and can carry out fault location.
This intelligence connection is protected control system, comprises auxiliary interlock system, auxiliary fault collection system, is arranged on fault detection module and main control computer in the linear accelerator 7 big subsystems; 7 subsystems are: modulator, accelerating tube system, dosage monitoring ADC1 system, ADC2 system, grid-control rifle AIC system, treatment head system and therapeutic bed system; Fault detection module in 7 subsystems inserts auxiliary interlock system respectively;
Auxiliary fault collection system comprises temperature sensor, titanium pump current sensor, gathers the atmospheric pressure table of air pressurized waveguide internal gas pressure, gathers hydraulic pressure Pressure gauge and therapeutic room's shield door switch of water-cooling system hydraulic pressure, and inserts auxiliary interlock system respectively;
Auxiliary interlock system and each fault detection module also communicate to connect with main control computer respectively;
Fault detection module in each subsystem is used to detect place subsystem fault, determines corresponding operating after detecting fault; Corresponding operating information is notified to auxiliary interlock system, and the failure code that will comprise failure cause and corresponding operating information sends to main control computer; Determined corresponding operating was respectively after different subsystems detected fault: after the fault detection module in the modulator detects fault, determine the broken height pressure; After fault detection module in the accelerating tube system detects fault, determine disconnected line, broken height pressure or the low pressure of breaking according to fault type; After fault detection module in ADC1 system and the ADC2 system detects fault, determine the broken height pressure; After fault detection module in the AIC system detects fault, determine disconnected line or broken height pressure according to fault type; After fault detection module in the treatment head system detects fault, determine disconnected line or broken height pressure according to fault type; After fault detection module in the therapeutic bed system detects fault not in place, determine the broken height pressure;
The function of auxiliary interlock system comprises: (1) determines that too high fault of water temperature and corresponding operating are disconnected low pressure when detecting temperature value that temperature sensor gathers greater than the preset temperature thresholding; (2) when the titanium pump source current that detects the collection of titanium pump current sensor surpasses the predetermined current thresholding, determine that titanium pump source current fault and corresponding operating are disconnected line; (3) when the air pressurized waveguide internal gas pressure that detects the collection of atmospheric pressure table is lower than 0.22MPa, determine that air pressurized waveguide air pressure failures and corresponding operating are that broken height is pressed; (4) when the water-cooling system hydraulic pressure that detects the collection of hydraulic pressure Pressure gauge is lower than setting value, determine that water-cooling system hydraulic pressure fault and corresponding operating are disconnected low pressure; (5) when detecting therapeutic room's shield door and do not close, determine that therapeutic room's shield door switch fault and corresponding operating are that broken height is pressed; (6) after determining the auxiliary fault collection system failure and corresponding operating, or after receiving the operational notification that fault detection module sends, carry out corresponding operating, specifically: when determining disconnected line, notice accelerating tube system carries out disconnected line operation; When definite broken height was pressed, the notice modulator was carried out the broken height press operation; When determining to break low pressure, the notice main control computer; (7) determine that auxiliary fault collection system breaks down and corresponding operating after, the failure code that further will comprise failure cause and corresponding operating information sends to main control computer;
Main control computer is used for according to the failure code that is received, and shows failure cause and corresponding operating information; When the disconnected low pressure that receives auxiliary interlock system was notified, it was disconnected low voltage operated to notify all subsystems to carry out.
Preferably, described auxiliary fault collection system comprises temperature sensor 1～7, is respectively applied for and gathers accelerating tube inlet water temperature, magnetron Magnet outlet water temperature, anode of magnetron outlet water temperature, accelerating tube focus coil outlet water temperature, microwave system heavy load outlet water temperature, accelerating tube beam bending coil outlet water temperature and water-cooling system outer circulation water inlet water temperature
Preferably, described auxiliary interlock system further provides the synchronised clock of 1MHz for each subsystem, and synchronizing clock signals represents when HL1 is bright that by triggering light emitting diode HL1 behind the 74LS 123 chip broadenings synchronizing clock signals is normal, and not working then, expression has fault.
Preferably, described intelligence connection is protected control system and is further comprised 8 fault masking buttons 1～8 that are arranged on the control station, corresponding respectively auxiliary fault collection system, modulator, accelerating tube system, ADC1 system, ADC2 system, AIC system, treatment head system, therapeutic bed system; When fault takes place, judge whether the corresponding fault masking button that breaks down is pressed, if then do not interrupt the work of clinac; Otherwise, interrupt the work of clinac.
According to above technical scheme as seen, the present invention has following advantage:
The present invention's intelligence connection is protected control system and can be monitored in real time each extension set state and each setting test point, after in a single day clinac breaks down, intelligence connection is protected the part or all of function that control system can closing machine, and fault positioned, mechanical disorder is come into plain view, help failure judgment and eliminating work.Because it is comparatively comprehensive that test point is provided with, therefore, the effectively failure judgement and the action of interlocking.
Secondly, the present invention adopts the information transmission between the auxiliary interlock system of optocoupler realization and Pressure gauge, switch and the subsystem, and is simple and reliable for structure.
In addition, the present invention also provides the fault masking function, makes things convenient for system debug.
Description of drawings
Fig. 1 protects the structural representation of control system for the intelligence connection that the present invention is used for clinac.
The specific embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
The invention provides a kind of intelligence connection that is used for clinac and protect control system; its core concept is; set up an auxiliary connection insurance system; be used for monitoring air pressure, the electric current of titanium pump power supply, the switch of the plumbous door of therapeutic room's shielding and the fault of each subsystem in the water temperature, hydraulic pressure, air pressurized waveguide system of clinac water-cooling system; determine corresponding operating according to fault type, protect interlocking, machine interlocking, maloperation interlocking so that realize patient.
For the ease of finding fault, fixing a breakdown, as shown in Figure 1, the present invention is divided into following several to mechanical disorder: modulator fault, the accelerating tube system failure, dosage monitoring (ADC) 1 system failure, the ADC2 system failure, grid-control rifle (AIC) system failure, treatment head system fault, the therapeutic bed system failure and the auxiliary fault collection system failure that contains various default test points.Wherein, auxiliary fault collection system specifically comprises water temperature, the hydraulic pressure of water-cooling system, the air pressure in the air pressurized waveguide system, titanium pump power supply and shield door switch fault.
The auxiliary fault collection system failure is by auxiliary interlock system detection and determine corresponding operating; The definite of the fault detect of 7 big subsystems and corresponding operating finished by its fault detection module separately, and corresponding operating is notified to auxiliary interlock system.The execution that corresponding operating is carried out in auxiliary interlock system unification distributes.
Troubleshooting of the present invention is divided into disconnected line, and broken height is pressed, three grades of disconnected low pressure, the corresponding operating difference of different faults type correspondence.Low pressure is meant the supply voltage of each subsystem, and after each subsystem powered on and finishes, for modulator adds high pressure, everything is ready, could control accelerating tube topknot stream.Therefore, auxiliary locking system is when determining to break line, and notice accelerating tube system carries out disconnected line operation; When definite broken height was pressed, the notice modulator was carried out the broken height press operation; When determining to break low pressure, the notice main control computer is controlled each subsystem by main control computer and is carried out disconnected low voltage operated.Auxiliary interlock system all links to each other with main control computer by communication line with each subsystem, is used for failure code is sent to processing such as main control computer shows.
Be described in detail at each subsystem below.
● auxiliary fault collection system connection is protected
Auxiliary fault collection system is responsible for setting the fault collection of test point, and fault is judged by auxiliary interlock system execution.
As shown in Figure 1, auxiliary fault collection system comprises temperature sensor 1～7, titanium pump current sensor, aqueous vapor pressure sensitive unit and therapeutic room's shield door switch, and inserts auxiliary interlock system respectively.
(1) temperature sensor 1～7 is respectively applied for the temperature of gathering following 7 test points, is respectively: 1-accelerating tube inlet water temperature; 2-magnetron Magnet outlet water temperature; 3-anode of magnetron outlet water temperature; 4-accelerating tube focus coil outlet water temperature; 5-microwave system heavy load outlet water temperature; 6-accelerating tube beam bending coil outlet water temperature; 7-water-cooling system outer circulation water inlet water temperature.The auxiliary interlock system of magnitude of current input of the expression temperature that temperature sensor 1～7 is gathered.
Each temperature sensor inserts auxiliary interlock system by lead; Auxiliary interlock system adopts operational amplifier that 7 tunnel temperature sensor electric current input quantities are converted into voltage, excursion is 0-5V, digital quantity by 0-50 ℃ of TLC1543A/D conversion, compare with the value of setting separately, when bigger than the value of setting, auxiliary interlock system is determined the too high fault of water temperature and is operating as disconnected low pressure accordingly.And will the break low pressure instruction of auxiliary interlock system sends to main control computer, controls the disconnected low pressure of all subsystems by main control computer.Auxiliary interlock system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " aid system temperature break low pressure ".
(2) titanium pump current sensor
The titanium pump current sensor inserts auxiliary interlock system by lead.When auxiliary interlock system surpasses the predetermined current thresholding at the titanium pump source current that detects the collection of titanium pump current sensor, determine that titanium pump source current fault and corresponding operating are disconnected line.And the line that will break instruction sends to the accelerating tube system, finishes disconnected line operation by the accelerating tube system.Auxiliary interlock system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows by " aid system titanium pump break line ".
(3) aqueous vapor pressure sensitive unit
The aqueous vapor pressure sensitive unit comprises the hydraulic pressure Pressure gauge of the atmospheric pressure harmony in the exterior collection water-cooling system hydraulic pressure of gathering the air pressurized waveguide internal gas pressure.Two Pressure gauges all insert auxiliary interlock system by the input optocoupler that is arranged in the auxiliary interlock system.Like this, assist interlock system just can change the Pressure gauge change of state situation that read easily according to the level of input optocoupler.
Microwave power from magnetron to the waveguide the accelerating tube ceramic window is stronger, in order to prevent to produce discharge in the waveguide, must fill the higher dielectric gas of dielectric constant, when the air pressure in the air pressurized waveguide is lower than 0.22MPa, manometric electric contact disconnects, corresponding input optocoupler does not have conducting, and optocoupler is output as low level; At this moment, auxiliary interlock system learns that according to the level variation of input optocoupler the air pressurized waveguide internal gas pressure is lower than 0.22MPa, determines that air pressurized waveguide air pressure failures and corresponding operating are that broken height is pressed; And, the order of broken height end finger is sent to modulator, finish the broken height press operation by modulator.Auxiliary interlock system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " aid system air pressure broken height pressure ".
Three test points are set in water-cooling system, and each test point is provided with a Pressure gauge.Each Pressure gauge all inserts auxiliary interlock system by the input optocoupler that is arranged in the auxiliary interlock system.When the hydraulic pressure of arbitrary test point was lower than setting value, the electric contact of relevant pressure table disconnected, and corresponding input optocoupler does not have conducting, and the input optocoupler is output as low level; At this moment, auxiliary interlock system learns that according to the level variation of input optocoupler water-cooling system hydraulic pressure is lower than setting value, determines that water-cooling system hydraulic pressure fault and corresponding operating are disconnected low pressure; And the low pressure of will breaking instruction sends to main control computer, controls the disconnected low pressure of all subsystems by main control computer.Auxiliary interlock system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " aid system hydraulic pressure break low pressure ".
(4) therapeutic room's shield door switch
The switch of the plumbous door of therapeutic room's shielding inserts auxiliary interlock system by the input optocoupler that is arranged in the auxiliary interlock system.Do not shut when the plumbous door of therapeutic room's shielding, the input optocoupler of shield door switch correspondence does not have conducting, and this input optocoupler is output as low level; At this moment, auxiliary interlock system determines that according to the level variation of input optocoupler therapeutic room's shield door switch fault and corresponding operating are that broken height is pressed; And, the order of broken height end finger is sent to modulator, finish the broken height press operation by the modulator control plate.Auxiliary interlock system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " aid system shield door broken height pressure ".
● the modulator connection is protected
Fault detection module in the modulator detects place subsystem fault, and fault type comprises: main pulse transformator over current fault, thyratron drive circuit fault, IGBT fault (for example puncturing), artificial line charging circuit over current fault, negative mismatch current over current fault, signal source pulse feedback fault, magnetron heater power failure, magnetron magnet power supply fault, the over current fault etc. of energizing.
Modulator is reserved 3 output interfaces for auxiliary interlock system, and each output interface is respectively arranged with the output optocoupler, and each output interface inserts an input optocoupler of assisting in the interlock system by circuit respectively.The corresponding respectively disconnected line of 3 spare interfaces, broken height is pressed and disconnected low voltage operated.After subsystem is determined corresponding operating, make the not conducting of output optocoupler of the output interface of this corresponding operating correspondence, make the not conducting of connected input optocoupler; Auxiliary interlock system can determine what the current definite failed operation of modulator is according to the variation of three input optocoupler voltages.Other subsystems and modulator are similar, also all reserve three interfaces, and insert auxiliary interlock system by optocoupler respectively.Auxiliary interlock system also can adopt the variation of optocoupler level to realize to the subsystem notice broken height pressure and the line operation of breaking.Present embodiment adopts optocoupler to realize that the information notification architecture is simple and reliable, also can adopt other modes to realize in practice.
In this modulator, when the fault detection module in the modulator detects fault, no matter be the fault of which kind of type, determine that all corresponding operating is that broken height is pressed.At this moment, the control broken height is pressed corresponding not conducting of output optocoupler, and output low level makes not conducting of corresponding input optocoupler on the auxiliary interlock system, is output as low level; Fault detection module also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " manipulator broken height pressure ".Auxiliary interlock system sends to modulator with the order of broken height end finger when detecting the not conducting of input optocoupler of the broken height pressure output interface that connects modulator, finish the broken height press operation by the modulator control plate.
● accelerating tube system connection is protected
Fault detection module in the accelerating tube system detects place subsystem fault, and fault type comprises: prefocus power failure, lead power failure, input guiding power failure, focusing power supply fault, deflection power fault, phase shifter fault in advance.
Three spare interfaces of accelerating tube system insert auxiliary interlock system by optocoupler.When the fault detection module in the accelerating tube system detects fault, determine disconnected line, broken height pressure or disconnected low pressure, control the not conducting of output optocoupler of corresponding spare interface correspondence according to fault type, thus not conducting of corresponding input optocoupler on the feasible auxiliary interlock system; Fault detection module also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " accelerating tube break line " or " accelerating tube broken height pressure " or " accelerating tube break low pressure ".Auxiliary interlock system according to conducting input optocoupler position not determining the corresponding operating type, and is notified corresponding subsystem executable operations when detecting certain the not conducting of input optocoupler that connects the accelerating tube system.
Wherein, the accelerating tube system failure with the corresponding relation of corresponding operating is: the prefocus power failure, in advance lead power failure and input guiding power failure corresponding be operating as disconnected line; Focusing power supply fault and deflection power fault correspondence be operating as disconnected low pressure; The broken height that is operating as of phase shifter fault correspondence is pressed.
● ADC1 system and ADC2 system connection are protected
Fault detection module in the ADC system detects place subsystem fault, and fault type comprises: export orientation power failure, ionization chamber power failure, symmetrical fault, flatteness fault, close rate fault, dosage arrive fault, ADC system host broken height presses fault and treatment time to arrive fault.
Three spare interfaces of ADC system insert auxiliary interlock system by optocoupler.When the fault detection module in the ADC system detects fault, no matter be the fault of which kind of type, determine that all corresponding operating is that broken height is pressed.At this moment, the not conducting of output optocoupler of fault detection module control broken height crimping mouth correspondence makes and assists not conducting of corresponding input optocoupler on the interlock system, is output as low level; The ADC system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " ADC1 broken height pressure " or " ADC2 broken height pressure ".Auxiliary interlock system sends to modulator with the order of broken height end finger when detecting the not conducting of input optocoupler of the broken height crimping mouth that connects the ADC system, finish the broken height press operation by the modulator control plate.
● AIC system connection is protected
Fault detection module in the AIC system detects place subsystem fault, and fault type comprises: grid-control gun filament power failure, the positive grid voltage fault of grid-control rifle, minus gate voltage fault, grid voltage pulse feedback fault, manipulator lock-out pulse fault, line error fault.
Three spare interfaces of AIC system insert auxiliary interlock system by optocoupler.When the fault detection module in the AIC system detects fault, determine disconnected line or broken height pressure, control the not conducting of output optocoupler of corresponding spare interface correspondence, make not conducting of corresponding input optocoupler on the auxiliary interlock system according to fault type.The AIC system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " AIC break line " or " AIC broken height pressure ".Auxiliary interlock system is determined the corresponding operating type according to conducting input optocoupler connecting object not, and is notified corresponding subsystem executable operations when detecting certain the not conducting of input optocoupler that connects the AIC system.
Wherein, the fault of AIC system with the corresponding relation of corresponding operating is: the broken height that is operating as that grid-control gun filament power failure, the positive grid voltage fault of grid-control rifle, minus gate voltage fault and grid voltage pulse feedback fault are corresponding is pressed; Manipulator lock-out pulse fault and line error fault correspondence be operating as disconnected line.
● treatment head system connection is protected
Fault detection module in the treatment head system detects place subsystem fault, and fault type comprises: position switch fault, energy shelves fault not in place, motor drive power supply fault, adnexa interlocking fault.
Three spare interfaces of treatment head system insert auxiliary interlock system by optocoupler.When the fault detection module in the treatment head system detects fault, determine disconnected line or broken height pressure, control the not conducting of output optocoupler of corresponding spare interface correspondence, make not conducting of corresponding input optocoupler on the auxiliary interlock system according to fault type.The treatment head system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " a treatment disconnected line " or " a treatment broken height is pressed ".Auxiliary interlock system is determined the corresponding operating type according to conducting input optocoupler connecting object not when detecting certain the not conducting of input optocoupler that connects the AIC system, and the disconnected line of notice accelerating tube system or notice modulator broken height are pressed.
Wherein, the fault of treatment head system with the corresponding relation of corresponding operating is: the position switch fault, can grade fault not in place and the motor drive power supply fault corresponding be operating as disconnected line; The broken height that is operating as of adnexa interlocking fault correspondence is pressed.
● therapeutic bed system connection is protected
Fault detection module in the therapeutic bed system detects place subsystem fault, and fault type comprises: fault not in place.
Three spare interfaces of therapeutic bed system insert auxiliary interlock system by optocoupler.When the fault detection module in the therapeutic bed system detects fault not in place, determine the broken height press operation, the control broken height is pressed the not conducting of output optocoupler of output interface correspondence, makes not conducting of corresponding input optocoupler on the auxiliary interlock system.The therapeutic bed system also sends to main control computer with failure code, shows failure cause and operation on main control computer, for example shows " therapeutic bed broken height pressure ".Auxiliary interlock system sends to modulator with the order of broken height end finger when detecting the not conducting of input optocoupler of the broken height crimping mouth that connects the therapeutic bed system, finish the broken height press operation by the modulator control plate.
In the present embodiment, also provide the synchronised clock of 1MHz by auxiliary interlock system for each subsystem, with the operation of each subsystem synchronously, in order to prevent to disturb, synchronizing clock signals is exported after through the SN75110 difference.Whether normal for the ease of the monitoring synchronizing clock signals, synchronizing clock signals by triggering light emitting diode HL1 behind the 74LS123 broadening, is represented that when HL1 is bright synchronizing clock signals is normal, not working then, expression has fault.
In order to point out the related personnel current fault type, the present invention is provided with four light emitting diode HL2, HL3, HL4, HL5 and a reset switch, can be arranged on the control station at main control computer place.HL2 represents that broken height pressure fault, HL3 represent that disconnected line fault, HL4 represent that disconnected low voltage failure, HL5 represent total failare; When any fault does not take place, light HL2, HL3, HL4 and HL5, when auxiliary interlock system detects arbitrary fault, extinguish HL5; When detecting disconnected line fault, extinguish HL3; When detecting broken height pressure fault, extinguish HL2 and HL3; When detecting disconnected low voltage failure, extinguish HL2, HL3 and HL4.After fault is excluded, press the reset key on the control station, light emitting diode HL2, HL3, HL4, HL5 all light again.
When arbitrary fault appears in system, all can interrupt the work of clinac, debugging the invention provides the fault masking function for convenience.8 fault masking buttons 1～8 are set, corresponding respectively auxiliary fault collection system, modulator, accelerating tube system, ADC1 system, ADC2 system, AIC system, treatment head system, therapeutic bed system on control station.When certain fault masking button was pressed, after the fault of this fault masking button correspondence took place, the operate as normal of clinac can not be interrupted.But when the fault of the fault masking button correspondence that is not pressed took place, the operate as normal of clinac still can be interrupted.After the fault masking button is upspring, the cancellation fault masking.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an intelligence connection that is used for clinac is protected control system, it is characterized in that, this system comprises auxiliary interlock system, auxiliary fault collection system, is arranged on fault detection module and main control computer in the linear accelerator 7 big subsystems; 7 subsystems are: modulator, accelerating tube system, dosage monitoring ADC1 system, ADC2 system, grid-control rifle AIC system, treatment head system and therapeutic bed system; Fault detection module in 7 subsystems inserts auxiliary interlock system respectively;
Auxiliary fault collection system comprises temperature sensor, titanium pump current sensor, gathers the atmospheric pressure table of air pressurized waveguide internal gas pressure, gathers hydraulic pressure Pressure gauge and therapeutic room's shield door switch of water-cooling system hydraulic pressure, and inserts auxiliary interlock system respectively;
Auxiliary interlock system and each fault detection module communicate to connect with main control computer respectively;
Fault detection module in each subsystem is used to detect place subsystem fault, determines corresponding operating after detecting fault; Fault detection module is notified to auxiliary interlock system with corresponding operating information, and the failure code that will comprise failure cause and corresponding operating information sends to main control computer; Determined corresponding operating was respectively after different subsystems detected fault: after the fault detection module in the modulator detects fault, determine the broken height pressure; After fault detection module in the accelerating tube system detects fault, determine disconnected line, broken height pressure or the low pressure of breaking according to fault type; After fault detection module in ADC1 system and the ADC2 system detects fault, determine the broken height pressure; After fault detection module in the AIC system detects fault, determine disconnected line or broken height pressure according to fault type; After fault detection module in the treatment head system detects fault, determine disconnected line or broken height pressure according to fault type; After fault detection module in the therapeutic bed system detects fault not in place, determine the broken height pressure;
The function of auxiliary interlock system comprises: (1) determines that too high fault of water temperature and corresponding operating are disconnected low pressure when detecting temperature value that temperature sensor gathers greater than the preset temperature thresholding; (2) when the titanium pump source current that detects the collection of titanium pump current sensor surpasses the predetermined current thresholding, determine that titanium pump source current fault and corresponding operating are disconnected line; (3) when the air pressurized waveguide internal gas pressure that detects the collection of atmospheric pressure table is lower than 0.22MPa, determine that air pressurized waveguide air pressure failures and corresponding operating are that broken height is pressed; (4) when the water-cooling system hydraulic pressure that detects the collection of hydraulic pressure Pressure gauge is lower than setting value, determine that water-cooling system hydraulic pressure fault and corresponding operating are disconnected low pressure; (5) when detecting therapeutic room's shield door and do not close, determine that therapeutic room's shield door switch fault and corresponding operating are that broken height is pressed; (6) after determining the auxiliary fault collection system failure and corresponding operating, or after receiving the operational notification that fault detection module sends, carry out corresponding operating, specifically: when determining disconnected line, notice accelerating tube system carries out disconnected line operation; When definite broken height was pressed, the notice modulator was carried out the broken height press operation; When determining to break low pressure, the notice main control computer; (7) determine that auxiliary fault collection system breaks down and corresponding operating after, the failure code that further will comprise failure cause and corresponding operating information sends to main control computer;
Main control computer is used for according to the failure code that is received, and shows failure cause and corresponding operating information; When the disconnected low pressure that receives auxiliary interlock system was notified, it was disconnected low voltage operated to notify all subsystems to carry out.
2. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that, described auxiliary fault collection system comprises temperature sensor 1～7, is respectively applied for and gathers accelerating tube inlet water temperature, magnetron Magnet outlet water temperature, anode of magnetron outlet water temperature, accelerating tube focus coil outlet water temperature, microwave system heavy load outlet water temperature, accelerating tube beam bending coil outlet water temperature and water-cooling system outer circulation water inlet water temperature.
3. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that the accelerating tube system failure with the corresponding relation of corresponding operating is: the prefocus power failure, in advance lead power failure and input guiding power failure corresponding be operating as disconnected line; Focusing power supply fault and deflection power fault correspondence be operating as disconnected low pressure; The broken height that is operating as of phase shifter fault correspondence is pressed.
4. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that the fault of AIC system with the corresponding relation of corresponding operating is: the broken height that is operating as that grid-control gun filament power failure, the positive grid voltage fault of grid-control rifle, minus gate voltage fault and grid voltage pulse feedback fault are corresponding is pressed; Manipulator lock-out pulse fault and line error fault correspondence be operating as disconnected line.
5. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that the fault of treatment head system with the corresponding relation of corresponding operating is: the position switch fault, can grade fault not in place and the motor drive power supply fault corresponding be operating as disconnected line; The broken height that is operating as of adnexa interlocking fault correspondence is pressed.
6. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that, described auxiliary interlock system further provides the synchronised clock of 1MHz for each subsystem, synchronizing clock signals is by triggering light emitting diode HL1 behind the 74LS123 chip broadening, represent when HL1 is bright that synchronizing clock signals is normal, not working then, expression has fault.
7. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that, the intelligence connection is protected control system and further comprised four light emitting diode HL2, HL3, HL4, HL5 and reset switch that is arranged on control station; HL2 represents that broken height pressure fault, HL3 represent that disconnected line fault, HL4 represent that disconnected low voltage failure, HL5 represent total failare; When any fault does not take place, light HL2, HL3, HL4 and HL5, when auxiliary interlock system detects arbitrary fault, extinguish HL5; When detecting disconnected line fault, extinguish HL3; When detecting broken height pressure fault, extinguish HL2 and HL3; When detecting disconnected low voltage failure, extinguish HL2, HL3 and HL4; When reset key was pressed, HL2, HL3, HL4, HL5 all lighted again.
8. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that, described intelligence connection is protected control system and is further comprised 8 fault masking buttons 1～8 that are arranged on the control station, corresponding respectively auxiliary fault collection system, modulator, accelerating tube system, ADC1 system, ADC2 system, AIC system, treatment head system, therapeutic bed system; When fault takes place, judge whether the corresponding fault masking button that breaks down is pressed, if, then do not interrupt the work of clinac, if the fault masking button is not pressed, then interrupt the work of clinac.
9. the intelligence connection that is used for clinac as claimed in claim 1 is protected control system, it is characterized in that, in the auxiliary interlock system a plurality of input optocouplers is set;
Atmospheric pressure table, hydraulic pressure Pressure gauge and therapeutic room's shield door switch insert an input optocoupler in the auxiliary interlock system respectively; When the air pressurized waveguide internal gas pressure of atmospheric pressure table collection was lower than 0.22MPa, atmospheric pressure table electric contact disconnected, and made the not conducting of input optocoupler that the atmospheric pressure table connects; The water-cooling system hydraulic pressure of hydraulic pressure Pressure gauge collection is lower than when setting value, and hydraulic pressure Pressure gauge electric contact disconnects, and makes the not conducting of input optocoupler that the hydraulic pressure Pressure gauge connects; When therapeutic room's shield door is not shut, the not conducting of input optocoupler that therapeutic room's shield door switch connects;
Each fault detection module is reserved 3 output interfaces that are provided with the output optocoupler for auxiliary interlock system, each output interface inserts an input optocoupler in the auxiliary interlock system, reserves the corresponding respectively disconnected line operation of output interface, broken height press operation and disconnected low voltage operated for 3; After subsystem is determined corresponding operating, make the not conducting of output optocoupler of the output interface of this corresponding operating correspondence, make the not conducting of connected input optocoupler;
Auxiliary interlock system is determined corresponding operating detecting the input optocoupler not during conducting according to input optocoupler connecting object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010523029A CN101966369B (en) | 2010-10-28 | 2010-10-28 | Intelligent joint protection control system for medicinal linear accelerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103203079B (en) * | 2013-03-26 | 2015-11-25 | 江苏海明医疗器械有限公司 | The dual-modulator control system of medical electronic linear accelerator |
| CN105204417B (en) * | 2015-10-19 | 2018-01-12 | 江苏海明医疗器械有限公司 | A kind of control drive system of medical accelerator frame |
| CN106861054B (en) * | 2016-12-26 | 2019-10-18 | 江苏海明医疗器械有限公司 | A kind of medical accelerator line automatic centering control system |
| CN106890397B (en) * | 2016-12-30 | 2019-10-18 | 江苏海明医疗器械有限公司 | A kind of control system of medical computerized linear accelerator treatment head |
| CN107866006B (en) * | 2017-12-18 | 2020-04-14 | 合肥中科离子医学技术装备有限公司 | High-voltage power supply system based on accelerator beam adjustment |
| CN108664011A (en) * | 2018-06-04 | 2018-10-16 | 合肥中科离子医学技术装备有限公司 | A kind of safe cross-linked protective system for proton therapy accelerator |
| CN108811298B (en) * | 2018-06-27 | 2020-01-24 | 中国原子能科学研究院 | System and method for automatically adjusting main magnetic field of cyclotron through temperature compensation |
| GB2577858B (en) | 2018-08-16 | 2021-06-16 | Elekta ltd | Method for use with a radiotherapy device |
| CN110038232B (en) * | 2019-04-19 | 2021-04-06 | 合肥中科离子医学技术装备有限公司 | Proton treatment safety interlocking system working method based on different operation modes |
| CN110096027A (en) * | 2019-04-19 | 2019-08-06 | 合肥中科离子医学技术装备有限公司 | A kind of personnel safety interlock system for the interlocking of transit subregion |
| CN116370844B (en) * | 2023-01-13 | 2023-09-15 | 中子高新技术产业发展(重庆)有限公司 | Safety interlocking system for particle accelerator |
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| CN201223646Y (en) * | 2008-07-01 | 2009-04-22 | 山东新华医疗器械股份有限公司 | Device for treating accelerator interlock |
| CN101810910B (en) * | 2010-04-20 | 2011-06-15 | 江苏海明医疗器械有限公司 | Medical linear accelerator mechanism |
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