CN102764469B - Automatic calibration method and system for pressure of injection pump - Google Patents
Automatic calibration method and system for pressure of injection pump Download PDFInfo
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- CN102764469B CN102764469B CN201210231755.3A CN201210231755A CN102764469B CN 102764469 B CN102764469 B CN 102764469B CN 201210231755 A CN201210231755 A CN 201210231755A CN 102764469 B CN102764469 B CN 102764469B
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Abstract
The invention discloses an automatic calibration system for pressure of an injection pump. The automatic calibration system comprises an injector used for injection, a pressure detection unit and an injection pump; the pressure detection unit is connected with the injector and is used for detecting a pressure value of the water outlet end of the injector; the injection pump comprises a mechanical action part and an electric control part; and the electric control part controls the injector to inject according to the prestored corresponding relation of pressure values and voltage values, receives the voltage values output by a pressure sensor under the continuous pressure values during injection of the injector, and stores the corresponding relation of the pressure values and the voltage values. The automatic calibration system for pressure of the injection pump replaces the prestored corresponding relation of pressure values and voltage values with the obtained corresponding relation of pressure values and voltage values, and stores the obtained corresponding relation, so that calibration of preset injection parameters of the injector and practical injection parameters of the injector of the injection pump is realized, and the problems of low efficiency and incomplete data of manual calibration are solved. Moreover, the invention also provides an automatic calibration method for pressure of the injection pump.
Description
Technical field
The present invention relates to area of medical devices, particularly relate to a kind of syringe pump pressure automatic calibrating method and system.
Background technology
In medical treatment and industrial instrumentation equipment, often use syringe pump equipment, syringe pump is by its machinery pushing syringe, realizes steady pulseless liquid transfer, and in the process of transmission, output pressure and the output speed of the injection that syringe is exported have higher requirements.Because syringe is subject to syringe pump control, so in the production or application process of syringe pump, need to carry out adjustment to realize output pressure or output speed accurately to the machinery of syringe pump and for the driving device of drive mechanism action.
Current pressure calibration program needs personal monitoring's injection process, and the manual pressure data that gathers, basic operation is syringe to be full of to liquid be installed on syringe pump, syringe water side is connected on Pressure gauge, and operation syringe pump moves to control injector to inject according to the force value of pre-stored and magnitude of voltage corresponding relation.The manometric numerical value of personal monitoring in injection process, in the time that reaching designated parameter, force value operates syringe pump, manually collection current data is obtained the output voltage values of the pressure transducer between machinery and syringe, in process, get altogether two values, syringe pump fits to a curve by two force value and the pressure transducer output voltage values that gather, this curve representation the relation of pressure and sensor voltage output to replace force value and the magnitude of voltage corresponding relation of above-mentioned pre-stored, thereby realize the mutual calculating of pressure and sensor voltage output, realize calibration.
So find out, existing calibration program needs staff's complete monitoring, and the feature of data acquisition craftization has the shortcoming that cost is high, efficiency is low, data integrity is not enough.
Summary of the invention
Based on this, being necessary needs staff's complete monitoring for existing calibration program, and data acquisition craftization problem provides that a kind of calibration efficiency is high, the syringe pump pressure automated calibration system of data integrity.
In addition, also provide a kind of syringe pump pressure automatic calibrating method.
A kind of syringe pump pressure automated calibration system, comprising:
Syringe, for injection;
Pressure sensing cell, is connected with described syringe, for detection of the force value of the water side of described syringe;
Syringe pump, comprises mechanical action part and electric control system, and described electric control system drives injector to inject described in the control of described mechanical action part according to the corresponding relation of the force value of pre-stored and magnitude of voltage; Described injector holder is located at described mechanical action part and is provided with the control end of pressure transducer;
Described electric control system is also electrically connected and obtains described force value with described pressure sensing cell, and obtain the magnitude of voltage that under the continuous force value in described injector to inject process, described pressure transducer is exported, the corresponding relation of the described force value getting and magnitude of voltage is replaced to the force value of described pre-stored and the corresponding relation of magnitude of voltage storage.
In an embodiment, the electric control system of described syringe pump comprises force value acquiring unit, control unit, memory element therein, wherein,
Force value acquiring unit, is electrically connected with described pressure sensing cell, for obtaining described force value;
Control unit, be connected with described force value acquiring unit, memory element and pressure transducer, for replacing the force value of described pre-stored using described force value and curve of magnitude of voltage digital simulation as reference voltage pressure dependence curve and the corresponding relation of magnitude of voltage is stored in described memory element.
Therein in an embodiment, the mechanical action part of described syringe pump comprises the motor being connected with described control unit, and described control unit moves to promote described syringe according to the control instruction of outside input according to control end described in driven by motor described in described reference voltage pressure dependence curve controlled and does piston movement.
Therein in an embodiment, the electric control system of described syringe pump also comprises the alarm unit being connected with described control unit, when in described injector to inject process, the described magnitude of voltage of Real-time Obtaining and the relation curve of force value gained depart from described reference voltage pressure dependence curve, alarm unit gives the alarm described in described control unit control.
A kind of syringe pump pressure automatic calibrating method, comprises the following steps:
Detect the force value of the water side of described syringe in injection process;
Gather described syringe according to described continuous magnitude of voltage corresponding to force value producing in the process of the corresponding relation injection of the force value of pre-stored and magnitude of voltage;
The corresponding relation of the described force value collecting and magnitude of voltage is replaced to the force value of described pre-stored and the corresponding relation of magnitude of voltage storage.
Therein in an embodiment, in the described injector to inject process of described collection, the step of the magnitude of voltage under force value comprises described in each:
Obtain described force value;
Using the described force value getting and curve of magnitude of voltage digital simulation as reference voltage pressure dependence curve.
Therein in an embodiment, after by the step of the corresponding relation storage of described force value and magnitude of voltage, also comprise the step that moves to promote described syringe and do piston movement according to the control instruction of outside input according to control end described in driven by motor described in described reference voltage pressure dependence curve controlled.
Therein in an embodiment, also comprise the step giving the alarm when the described magnitude of voltage of Real-time Obtaining and the relation curve of force value gained depart from described reference voltage pressure dependence curve in described injector to inject process.
Above-mentioned syringe pump pressure automated calibration system obtains the force value of the water side of syringe continuously by pressure sensing cell, the electric control system of syringe pump is according to the corresponding relation driving device action part control injector to inject of the force value of pre-stored and magnitude of voltage, and obtain the magnitude of voltage that force value lower pressure sensor continuous in injector to inject process is exported, this force value and magnitude of voltage are for continuously and one to one, the corresponding relation of the force value getting and magnitude of voltage is replaced to the force value of pre-stored and the corresponding relation of magnitude of voltage storage, realize the calibration of establishing the actual parameter of controlling injector to inject parameter and injector to inject in syringe pump, overcome the incomplete problem of manual calibration inefficiency and data.
Accompanying drawing explanation
Fig. 1 is the syringe pump pressure automated calibration system structural representation in an embodiment;
Fig. 2 is the syringe pump pressure automated calibration system module diagram in an embodiment;
Fig. 3 is syringe pump pressure automatic calibrating method flow chart in an embodiment;
Fig. 4 is the workflow diagram that in an embodiment, syringe pump gathers magnitude of voltage;
Fig. 5 is the syringe pump pressure automatic calibrating method flow chart in a preferred embodiment;
Fig. 6 is the syringe pump speed automated calibration system structural representation in an embodiment;
Fig. 7 is the syringe pump speed automated calibration system module diagram in an embodiment;
Fig. 8 is syringe pump speed automatic calibrating method flow chart in an embodiment;
Fig. 9 is the workflow diagram that in an embodiment, syringe pump gathers magnitude of voltage;
Figure 10 is the syringe pump speed automatic calibrating method flow chart in a preferred embodiment.
The specific embodiment
Shown in Fig. 1,2, be a kind of syringe pump pressure automated calibration system in a preferred embodiment, it comprises syringe 100, pressure sensing cell 200 and syringe pump 300.
Syringe 100 is for injection; Pressure sensing cell 200 is electrically connected with syringe 100, for detection of the force value of the water side 120 of syringe 100 and this force value is transferred to syringe pump 300; Syringe pump 300, comprise mechanical action part 302 and electric control system 304, electric control system 302 is controlled syringe 100 according to the corresponding relation driving device action part 304 of the force value of pre-stored and magnitude of voltage and is injected, and syringe 100 is set up in mechanical action part 302 and is provided with the control end 330 of pressure transducer 320; Electric control system 304 is electrically connected and obtains force value with pressure sensing cell 200, and obtain the magnitude of voltage that force value lower pressure sensor 320 continuous in syringe 100 injection process is exported, the corresponding relation of the force value getting and magnitude of voltage is replaced to the injection speed value of pre-stored and the corresponding relation of magnitude of voltage storage.
Be understandable that, the force value of storage and the corresponding relation of magnitude of voltage are syringe pump 300 preset values are exported relevant pressures or speed parameter for controlling syringe 100 injections, and in fact, the parameter of preset value is not necessarily accurate, thereby need adjustment.
Above-mentioned syringe pump pressure automated calibration system obtains the force value of the water side 120 of syringe 100 continuously by pressure sensing cell 200, the electric control system 302 of syringe pump 300 is controlled syringe 100 according to the corresponding relation driving device action part 304 of the force value of pre-stored and magnitude of voltage and is injected, and obtain the magnitude of voltage that force value lower pressure sensor 320 continuous in syringe 300 injection process is exported, this force value and magnitude of voltage are for continuously and one to one, the corresponding relation of the force value getting and magnitude of voltage is replaced to the force value of pre-stored and the corresponding relation of magnitude of voltage storage, realize and in syringe pump 300, established the calibration of controlling the actual parameter that syringe 100 injection parameters and syringe 100 inject, overcome the incomplete problem of manual calibration inefficiency and data.
As shown in Figure 2, the test side of pressure sensing cell 200 please refer to Fig. 1 with the water side 120(of syringe 100) be connected, detect and record syringe 100 continuous each force value in injection process, the force value detecting is transferred in the force value acquiring unit 312 of syringe pump 300 by data wire simultaneously.
The electric control system 302 of syringe pump 300 comprises force value acquiring unit 312, control unit 340, memory element 360 and motor 380.
Force value acquiring unit 312 is electrically connected with pressure sensing cell 200, for obtaining force value.
In the present embodiment, pressure transducer 320 is interposed between the control end 330 and syringe 100 of syringe pump 300, syringe 300 drives driving parameter motor 380 to drive control end 330 in the time that pushing syringe 100 does piston movement by interior establishing, and pressure transducer 320 just can sense the motive force of control end 330 and export corresponding magnitude of voltage and be transferred to control unit 340.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, is connected with motor 380, syringe 100 is clamped syringe pump 300 is outer, and control end 330 is mobile under the driving of motor 380 does piston movement with pushing syringe 100.
In fact, the data that pressure transducer 320 is responded to and the data exported detect and export with pressure sensing cell 200 are real-time synchronizations corresponding, have realized and in data integrity and high efficiency syringe pump 300, have established the calibration that drives parameter (magnitude of voltage) and controlled syringe 100 output parameters (force value).Control unit 340 using above-mentioned both produce data---curve of force value and magnitude of voltage digital simulation is as reference voltage pressure dependence profile memory to memory element 360, inject as reference control parameter control syringe 100 for syringe pump 300, as in the case, can remove pressure sensing cell 200.
The mechanical action part 304 of syringe pump 300 comprises the motor 380 being connected with control unit 340, and control unit 340 drives control end 330 to move with pushing syringe 100 according to the control instruction of outside input according to reference voltage pressure dependence curve controlled motor 380 and does piston movement.In fact, syringe pump 300 outsides are generally provided with controls the shift structure of syringe 100 with different pressures or speed injection, and this shift structure can be the mode of push button, knob or touch-control etc.; The control instruction of so outside input is equivalent under each different gear for triggering different input voltages or the different input current of motor 380 with different rates work.Motor 380 take reference voltage pressure dependence curve as benchmark job, has guaranteed the accuracy of water side 120 output pressures when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
The electric control system 302 of syringe pump 300 also comprises the alarm unit 390 being connected with control unit 340, when in syringe 100 injection process, the magnitude of voltage of Real-time Obtaining and the relation curve of force value gained depart from reference voltage pressure dependence curve, control unit 340 is controlled alarm unit 390 and is given the alarm.Particularly, may due to the damage of machine or system access supply voltage unstable, the corresponding control instruction of outside input makes motor 380 drive control end 330 pushing syringes 100 to inject, promote the reference voltage pressure dependence curve stored in force value that magnitude of voltage that the pressure transducer 320 of pressure exports and pressure sensing cell 200 correspondingly detect and memory element 360 when not corresponding if there is detecting control end 330, control unit 340 will trigger this alarm unit 390 and give the alarm.
Above-mentioned syringe pump pressure automated calibration system obtains the force value of the water side 120 of syringe 100 continuously by pressure sensing cell 200, syringe pump 300 gathers the magnitude of voltage that in syringe 100 injection process, each force value lower pressure sensor 320 is exported, this force value and magnitude of voltage are for continuously and one to one, realize and in syringe pump 300, established the calibration of controlling the actual parameter that syringe 100 injection parameters and syringe 100 inject, overcome the incomplete problem of manual calibration inefficiency and data.Motor 380 take reference voltage pressure dependence curve as benchmark job, has guaranteed the accuracy of water side 120 output pressures when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
In conjunction with Fig. 2 and Fig. 3, a kind of syringe pump pressure automatic calibrating method comprises the following steps (describing in conjunction with Fig. 2):
Step S510, the force value of the water side of detection syringe in injection process.Particularly, the test side of pressure sensing cell 200 please refer to Fig. 1 with the water side 120(of syringe 100) be connected, detect and record syringe 100 continuous each force value in injection process, the force value detecting is transferred in the force value acquiring unit 312 of syringe pump 300 by data wire simultaneously.
Step S520, gathers described syringe according to described continuous magnitude of voltage corresponding to force value producing in the process of the corresponding relation injection of the force value of pre-stored and magnitude of voltage.In the present embodiment, there is pressure transducer 320 to be interposed between the control end 330 and syringe 100 of syringe pump 300, syringe 300 drives driving parameter motor 380 to drive control end 330 in the time that pushing syringe 100 does piston movement by interior establishing, and pressure transducer 320 just can sense the motive force of control end 330 and export corresponding magnitude of voltage.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, is connected with motor 380, syringe 100 is clamped syringe pump 300 is outer, and control end 330 is mobile under the driving of motor 380 does piston movement with pushing syringe 100.Particularly, in conjunction with Fig. 2 and Fig. 4, step S520 comprises step S522 and step S524.
Step S522, obtains force value.Force value acquiring unit 312 is electrically connected with pressure sensing cell 200, for obtaining force value.
Step S524, using the described force value getting and curve of magnitude of voltage digital simulation as reference voltage pressure dependence curve.In fact, the data that pressure transducer 320 is responded to and the data exported detect and export with pressure sensing cell 200 are real-time synchronizations corresponding, have realized and in data integrity and high efficiency syringe pump 300, have established the calibration that drives parameter (magnitude of voltage) and controlled syringe 100 output parameters (force value)
Step S530, replaces the force value of described pre-stored and the corresponding relation of magnitude of voltage storage by the corresponding relation of the described force value collecting and magnitude of voltage.Control unit 340 is using the above-mentioned data that both produce---curve of force value and magnitude of voltage digital simulation is replaced the force value of pre-stored and the corresponding relation of magnitude of voltage and is stored to memory element 360 as reference voltage pressure dependence curve, so that reference voltage pressure dependence curve is injected as reference control parameter control syringe 100 for syringe pump 300, as in the case, can remove pressure sensing cell 200.
In a preferred embodiment, in conjunction with Fig. 2 and Fig. 5, syringe pump pressure automatic calibrating method also comprises step S540 and S550.
Step S540, moves to promote described syringe according to the control instruction of outside input according to control end described in driven by motor described in described reference voltage pressure dependence curve controlled and does piston movement.Motor 380 is connected with control unit 340, and control unit 340 drives control end 330 to move with pushing syringe 100 according to the control instruction of outside input according to reference voltage pressure dependence curve controlled motor 380 and does piston movement.In fact, syringe pump 300 outsides are generally provided with controls the shift structure of syringe 100 with different pressures or speed injection, and this shift structure can be the mode of push button, knob or touch-control etc.; The control instruction of so outside input is equivalent under each different gear for triggering different input voltages or the different input current of motor 380 with different rates work.Motor 380 take reference voltage pressure dependence curve as benchmark job, has guaranteed the accuracy of water side 120 output pressures when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
Step S550, the step giving the alarm when the described magnitude of voltage of Real-time Obtaining and the relation curve of force value gained depart from described reference voltage pressure dependence curve in described injector to inject process.Syringe pump 300 also comprises the alarm unit 390 being connected with control unit 340, when in syringe 100 injection process, the magnitude of voltage of Real-time Obtaining and the relation curve of force value gained depart from reference voltage pressure dependence curve, control unit 340 is controlled alarm unit 390 and is given the alarm.Particularly, may due to the damage of machine or system access supply voltage unstable, the corresponding control instruction of outside input makes motor 380 drive control end 330 pushing syringes 100 to inject, promote the reference voltage pressure dependence curve stored in force value that magnitude of voltage that the pressure transducer 320 of pressure exports and pressure sensing cell 200 correspondingly detect and memory element 360 when not corresponding if there is detecting control end 330, control unit 340 will trigger this alarm unit 390 and give the alarm.
Above-mentioned syringe pump pressure automatic calibrating method is by obtaining continuously the force value of water side 120 of syringe 100, the electric control system 302 of syringe 300 is controlled syringe 100 according to the corresponding relation driving device action part 304 of the force value of pre-stored and magnitude of voltage and is injected, and obtain the magnitude of voltage that in injection process, each force value lower pressure sensor 320 is exported, this force value and magnitude of voltage are for continuously and one to one, the corresponding relation of the force value getting and magnitude of voltage is replaced to the force value of pre-stored and the corresponding relation of magnitude of voltage storage, realize and in syringe pump 300, established the calibration of controlling the actual parameter that syringe 100 injection parameters and syringe 100 inject, overcome the incomplete problem of manual calibration inefficiency and data.Motor 380 take reference voltage pressure dependence curve as benchmark job, has guaranteed the accuracy of water side 120 output pressures when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
In addition, a kind of syringe pump speed automated calibration system is also disclosed.Shown in Fig. 6,7, it comprises syringe 100, syringe pump 300 and speed detection unit 400 syringe pump speed automated calibration system.
Above-mentioned syringe pump speed automated calibration system Negotiation speed detecting unit 400 obtains the injection speed value of the water side 120 of syringe 100 continuously, the electric control system 302 of syringe pump 300 is controlled syringe 100 according to the corresponding relation driving device action part 304 of the injection speed value of pre-stored and magnitude of voltage and is injected, and obtain the magnitude of voltage that injection speed value bottom offset sensor 350 continuous in syringe 300 injection process is exported, this injection speed value and magnitude of voltage are for continuously and one to one, the corresponding relation of the injection speed value getting and magnitude of voltage is replaced to the injection speed value of pre-stored and the corresponding relation of magnitude of voltage storage, realize and in syringe pump 300, established the calibration of controlling the actual parameter that syringe 100 injection parameters and syringe 100 inject, overcome the incomplete problem of manual calibration inefficiency and data.
As shown in Figure 7, the test side of speed detection unit 400 please refer to Fig. 6 with the water side 120(of syringe 100) be connected, detect and record syringe 100 continuous each injection speed value in injection process, specifically by detecting the output of water side 120 injection in the unit interval, so the output of injection speed value=injection the unit interval, the injection speed value detecting is transferred in the velocity amplitude acquiring unit 314 of syringe pump 300 by data wire simultaneously.
The electric control system 302 of syringe pump 300 comprises velocity amplitude acquiring unit 314, control unit 340, memory element 360 and motor 380.
Velocity amplitude acquiring unit 314 is electrically connected with speed detection unit 400, for obtaining injection speed value.
In the present embodiment, displacement transducer 350 is interposed between the control end 330 and syringe 100 of syringe pump 300, syringe 300 drives driving parameter motor 380 to drive control end 330 in the time that pushing syringe 100 does piston movement by interior establishing, and displacement transducer 350 just can sense the motive force of control end 330 and export corresponding magnitude of voltage and be transferred to control unit 340.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, with motor 380 mobile links, syringe 100 is connected syringe pump 300 is outer, and control end 330 is mobile under the driving of motor 380 does piston movement with pushing syringe 100.
In fact, the data that displacement transducer 350 is responded to and the data exported detect and export with speed detection unit 400 are real-time synchronizations corresponding, have realized and in data integrity and high efficiency syringe pump 300, have established the calibration that drives parameter (magnitude of voltage) and controlled syringe 100 output parameters (injection speed value).Control unit 340 using above-mentioned both produce data---curve of injection speed value and magnitude of voltage digital simulation is stored to memory element 360 as reference voltage tensionvelocity curve, inject as reference control parameter control syringe 100 for syringe pump 300, as in the case, can remove speed detection unit 400.
The mechanical action part 304 of syringe pump 300 comprises the motor 380 being connected with control unit 340, and control unit 340 drives control end 330 to move with pushing syringe 100 according to the control instruction of outside input according to reference voltage tensionvelocity curve control motor 380 and does piston movement.In fact, syringe pump 300 outsides are generally provided with controls the shift structure of syringe 100 with different pressures or speed injection, and this shift structure can be the mode of push button, knob or touch-control etc.; The control instruction of so outside input is equivalent under each different gear for triggering different input voltages or the different input current of motor 380 with different rates work.Motor 380 take reference voltage tensionvelocity curve as benchmark job, has guaranteed the accuracy of water side 120 output speeds when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
The electric control system 302 of syringe pump 300 also comprises the alarm unit 390 being connected with control unit 340, when in syringe 100 injection process, the relation curve of the magnitude of voltage of Real-time Obtaining and injection speed value gained departs from reference voltage tensionvelocity curve, control unit 340 is controlled alarm unit 390 and is given the alarm.Particularly, may due to the damage of machine or system access supply voltage unstable, the corresponding control instruction of outside input makes motor 380 drive control end 330 pushing syringes 100 to inject, if when in the injection speed value that the magnitude of voltage that the displacement transducer 350 of appearance detection control end 330 driving velocities is exported and speed detection unit 400 correspondingly detect and memory element 360, the reference voltage tensionvelocity curve of storage is not corresponding, control unit 340 will trigger this alarm unit 390 and give the alarm.
Above-mentioned syringe pump speed automated calibration system Negotiation speed detecting unit 400 obtains the injection speed value of the water side 120 of syringe 100 continuously, syringe pump 300 gathers the magnitude of voltage that in syringe 100 injection process, each injection speed value bottom offset sensor 350 is exported, this injection speed value and magnitude of voltage are for continuously and one to one, realize and in syringe pump 300, established the calibration of controlling the actual parameter that syringe 100 injection parameters and syringe 100 inject, overcome the incomplete problem of manual calibration inefficiency and data.Motor 380 take reference voltage tensionvelocity curve as benchmark job, has guaranteed the accuracy of water side 120 output speeds when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
In conjunction with Fig. 7 and Fig. 8, a kind of syringe pump speed automatic calibrating method comprises the following steps:
Step S610, detects the injection volume of the water side in injector to inject process and draws injection speed value.Particularly, the test side of speed detection unit 400 please refer to Fig. 6 with the water side 120(of syringe 100) be connected, detect and record syringe 100 continuous each injection speed value in injection process, specifically by detecting the output of water side 120 injection in the unit interval, so the output of injection speed value=injection the unit interval, the injection speed value detecting is transferred in the velocity amplitude acquiring unit 314 of syringe pump 300 by data wire simultaneously.
Step S620, gathers described syringe according to continuous magnitude of voltage corresponding to described injection speed value producing in the process of the corresponding relation injection of the injection speed value of pre-stored and magnitude of voltage.In the present embodiment, there is displacement transducer 350 to be interposed between the control end 330 and syringe 100 of syringe pump 300, syringe 300 drives driving parameter motor 380 to drive control end 330 in the time that pushing syringe 100 does piston movement by interior establishing, and displacement transducer 350 just can sense the motive force of control end 330 and export corresponding magnitude of voltage.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, is connected with motor 380, syringe 100 is clamped syringe pump 300 is outer, and control end 330 is mobile under the driving of motor 380 does piston movement with pushing syringe 100.Particularly, in conjunction with Fig. 7 and Fig. 9, step S620 comprises step S622 and step S624.
Step S622, obtains injection speed value.Velocity amplitude acquiring unit 314 is electrically connected with speed detection unit 400, for obtaining injection speed value.
Step S624, using the described injection speed value getting and curve of magnitude of voltage digital simulation as reference voltage tensionvelocity curve.In fact, the data (injection speed value) that displacement transducer 350 is responded to and the data (magnitude of voltage) exported detect and export with speed detection unit 400 are real-time synchronizations corresponding, have realized and in data integrity and high efficiency syringe pump 300, have established the calibration that drives parameter (magnitude of voltage) and controlled syringe 100 output parameters (injection speed value).
Step S630, replaces the injection speed value of described pre-stored and the corresponding relation of magnitude of voltage storage by the corresponding relation of the described injection speed value collecting and magnitude of voltage.Control unit 340 is using the above-mentioned data that both produce---curve of injection speed value and magnitude of voltage digital simulation is replaced the injection speed value of pre-stored and the corresponding relation of magnitude of voltage and is stored to memory element 360 as reference voltage tensionvelocity curve, so that reference voltage tensionvelocity curve is injected as reference control parameter control syringe 100 for syringe pump 300, as in the case, can remove speed detection unit 400.
In a preferred embodiment, in conjunction with Fig. 7 and Figure 10, syringe pump speed automatic calibrating method also comprises step S640 and S650.
Step S640, moves to promote described syringe according to the control instruction of outside input according to control end described in driven by motor described in the control of described reference voltage tensionvelocity curve and does piston movement.Motor 380 is connected with control unit 340, and control unit 340 drives control end 330 to move with pushing syringe 100 according to the control instruction of outside input according to reference voltage tensionvelocity curve control motor 380 and does piston movement.In fact, syringe pump 300 outsides are generally provided with controls the shift structure of syringe 100 with different pressures or speed injection, and this shift structure can be the mode of push button, knob or touch-control etc.; The control instruction of so outside input is equivalent under each different gear for triggering different input voltages or the different input current of motor 380 with different rates work.Motor 380 take reference voltage tensionvelocity curve as benchmark job, has guaranteed the accuracy of water side 120 output speeds when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
Step S650, gives the alarm when in described injector to inject process, the relation curve of the described magnitude of voltage of Real-time Obtaining and injection speed value gained departs from described reference voltage tensionvelocity curve.Syringe pump 300 also comprises the alarm unit 390 being connected with control unit 340, when in syringe 100 injection process, the relation curve of the magnitude of voltage of Real-time Obtaining and injection speed value gained departs from reference voltage tensionvelocity curve, control unit 340 is controlled alarm unit 390 and is given the alarm.Particularly, may due to the damage of machine or system access supply voltage unstable, the corresponding control instruction of outside input makes motor 380 drive control end 330 pushing syringes 100 to inject, if when in the injection speed value that the magnitude of voltage that the displacement transducer 350 of appearance detection control end 330 driving velocities is exported and speed detection unit 400 correspondingly detect and memory element 360, the reference voltage tensionvelocity curve of storage is not corresponding, control unit 340 will trigger this alarm unit 390 and give the alarm.
Above-mentioned syringe pump speed automatic calibrating method is by obtaining continuously the injection speed value of water side 120 of syringe 100, the electric control system 302 of syringe 300 is controlled syringe 100 according to the corresponding relation driving device action part 304 of the injection speed value of pre-stored and magnitude of voltage and is injected, and obtain the magnitude of voltage that in injection process, each velocity amplitude bottom offset sensor 320 is exported, this injection speed value and magnitude of voltage are for continuously and one to one, the corresponding relation of the injection speed value getting and magnitude of voltage is replaced to the injection speed value of pre-stored and the corresponding relation of magnitude of voltage storage, realize and in syringe pump 300, established the calibration of controlling the actual parameter that syringe 100 injection parameters and syringe 100 inject, overcome the incomplete problem of manual calibration inefficiency and data.Motor 380 take reference voltage tensionvelocity curve as benchmark job, has guaranteed the accuracy of water side 120 output speeds when motor 380 drives control end 330 pushing syringes 100 to inject under the triggering of the control instruction of outside input, has improved work efficiency.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a syringe pump pressure automated calibration system, is characterized in that, comprising:
Syringe, for injection;
Pressure sensing cell, is connected with described syringe, for detection of the force value of the water side of described syringe;
Syringe pump, comprises mechanical action part and electric control system, and described electric control system drives injector to inject described in the control of described mechanical action part according to the corresponding relation of the force value of pre-stored and magnitude of voltage; Described injector holder is located at the control end of described mechanical action part, and the control end of described mechanical action part is provided with pressure transducer;
Described electric control system is also electrically connected and obtains described force value with described pressure sensing cell, and obtain the magnitude of voltage that under the continuous force value in described injector to inject process, described pressure transducer is exported, the corresponding relation of the force value getting and magnitude of voltage is replaced to the force value of described pre-stored and the corresponding relation of magnitude of voltage storage;
The data that pressure transducer is responded to and the data exported detect and export with pressure sensing cell are real-time synchronizations corresponding.
2. syringe pump pressure automated calibration system according to claim 1, is characterized in that, the electric control system of described syringe pump comprises force value acquiring unit, control unit, memory element, wherein,
Force value acquiring unit is electrically connected with described pressure sensing cell, for obtaining described force value;
Control unit is connected with described force value acquiring unit, memory element and pressure transducer, for replacing the force value of described pre-stored using described force value and curve of magnitude of voltage digital simulation as reference voltage pressure dependence curve and the corresponding relation of magnitude of voltage is stored in described memory element.
3. syringe pump pressure automated calibration system according to claim 2, it is characterized in that, the mechanical action part of described syringe pump comprises the motor being connected with described control unit, and described control unit moves to promote described syringe according to the control instruction of outside input according to control end described in driven by motor described in described reference voltage pressure dependence curve controlled and does piston movement.
4. according to the syringe pump pressure automated calibration system described in claim 2 or 3, it is characterized in that, the electric control system of described syringe pump also comprises the alarm unit being connected with described control unit, in described injector to inject process, described magnitude of voltage and force value are by Real-time Obtaining and obtain the magnitude of voltage of Real-time Obtaining and the relation curve of force value, in the time that the described magnitude of voltage of Real-time Obtaining of gained and the relation curve of force value depart from described reference voltage pressure dependence curve, alarm unit gives the alarm described in described control unit control.
5. a syringe pump pressure automatic calibrating method, the syringe pump pressure automated calibration system based on described in claim 1～4 any one, is characterized in that, comprises the following steps:
Detect the force value of the water side of described syringe in injection process;
Gather described continuous magnitude of voltage corresponding to force value that described syringe produces in the process of injection according to the corresponding relation of the force value of pre-stored and magnitude of voltage;
The corresponding relation of the force value collecting and magnitude of voltage is replaced to the force value of described pre-stored and the corresponding relation of magnitude of voltage storage;
Described force value is real-time synchronization corresponding with magnitude of voltage.
6. syringe pump pressure automatic calibrating method according to claim 5, it is characterized in that, the described syringe of described collection comprises according to the step of magnitude of voltage corresponding to the continuous force value producing in the process of the corresponding relation injection of the force value of pre-stored and magnitude of voltage:
Obtain described force value;
Using the force value getting and curve of magnitude of voltage digital simulation as reference voltage pressure dependence curve.
7. syringe pump pressure automatic calibrating method according to claim 6, based on syringe pump pressure automated calibration system claimed in claim 3, it is characterized in that, after by the step of the corresponding relation storage of described force value and magnitude of voltage, also comprise the step that moves to promote described syringe and do piston movement according to the control instruction of outside input according to control end described in driven by motor described in described reference voltage pressure dependence curve controlled.
8. syringe pump pressure automatic calibrating method according to claim 6, it is characterized in that, also comprise: in described injector to inject process, described magnitude of voltage and force value are by Real-time Obtaining and obtain the described magnitude of voltage of Real-time Obtaining and the relation curve of force value, in the time that the described magnitude of voltage of Real-time Obtaining of gained and the relation curve of force value depart from described reference voltage pressure dependence curve, give the alarm.
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| DE102018108203A1 (en) * | 2018-04-06 | 2019-10-10 | Fresenius Medical Care Deutschland Gmbh | Method for calibrating a syringe pump, syringe pump and devices |
| CN109432552B (en) * | 2018-09-28 | 2021-04-27 | 中国船舶重工集团公司第七一六研究所 | Dynamic pressure detection system and method for oral anesthesia injection system |
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