CN110543126A - Control system and method for medical CT bulb tube heat dissipation oil pump - Google Patents

Control system and method for medical CT bulb tube heat dissipation oil pump Download PDF

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Publication number
CN110543126A
CN110543126A CN201910884350.1A CN201910884350A CN110543126A CN 110543126 A CN110543126 A CN 110543126A CN 201910884350 A CN201910884350 A CN 201910884350A CN 110543126 A CN110543126 A CN 110543126A
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CN
China
Prior art keywords
oil pump
motor
controller
signal acquisition
voltage
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Pending
Application number
CN201910884350.1A
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Chinese (zh)
Inventor
罗维涛
贺崇煊
周骏
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Minfound Medical Systems Co Ltd
FMI Technologies Inc
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FMI Technologies Inc
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Priority to CN201910884350.1A priority Critical patent/CN110543126A/en
Publication of CN110543126A publication Critical patent/CN110543126A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423Input/output
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25257Microcontroller

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

The invention provides a control system and a method of a medical CT bulb tube heat dissipation oil pump, and relates to the technical field of CT, wherein the control system comprises a controller, a peripheral power supply control circuit, a voltage signal acquisition circuit and a current signal acquisition circuit; the input end of the peripheral power supply control circuit is connected with the controller, and the output end of the peripheral power supply control circuit is connected with the oil pump motor; the input end of the voltage signal acquisition circuit is connected with the oil pump motor, and the output end of the voltage signal acquisition circuit is connected with the controller; the input end of the current signal acquisition circuit is connected with the oil pump motor, and the output end of the current signal acquisition circuit is connected with the controller. The control method comprises the steps of supplying power to the oil pump motor, judging whether the effective value of voltage is normal or not, judging whether the effective value of current is normal or not, judging whether the working frequency of the motor is normal or not, and judging whether the interval time of scanning movement is within a preset time range or not. The invention detects the voltage signal and the current signal fed back by the bulb oil pump in real time and analyzes the power supply condition of the bulb oil pump and the working state of the starting capacitor to prevent the bulb oil pump from being damaged.

Description

control system and method for medical CT bulb tube heat dissipation oil pump
Technical Field
The invention relates to the technical field of CT, in particular to a control system and a control method of a medical CT bulb tube heat dissipation oil pump.
Background
The heat dissipation oil pump is an important component of the medical CT bulb tube, and circularly utilizes cooling oil to dissipate heat of the bulb tube. The oil pump can influence the heat dissipation effect of the bulb tube if the function is abnormal, and the service efficiency of the bulb tube is reduced. When the oil pump has serious faults, the motor bearing inside the oil pump can even be blocked, so that the whole bulb tube is scrapped. The oil pump fault data arranged by an after-sales maintenance department are investigated and analyzed, and the oil pump power supply abnormity or the starting capacitor failure of the motor in the oil pump is a common fault reason. The oil pump is abnormally supplied with electricity, so the operation of the oil pump motor is inevitably abnormal.
In order to solve the problem of abnormal power supply of an oil pump or failure of a starting capacitor of a motor in the oil pump in the prior art, 230V +/-10% of alternating voltage is immediately provided for a bulb tube oil pump after a system is started, and the motor in the bulb tube oil pump is driven to be in a running working state all the time. Therefore, the starting capacitor of the motor in the oil pump is always in a heating working state after the CT system is started. If the motor starting capacitor in the oil pump is in a high-temperature working environment for a long time, the performance of the capacitor is affected along with the rise of the temperature, so that the performance of the oil pump is continuously reduced under the condition that the oil pump motor works in an undesirable magnetic field, and the service life of the capacitor is shortened. If can not in time discover and change trouble electric capacity, can appear the dead condition of oil pump motor bearing card when serious, lead to the bulb to damage. Therefore, the performance and the service life of the capacitor depend on the internal temperature and the working environment temperature, so that it is not reasonable that the oil pump enters the working mode immediately after the CT system is started.
In the prior art, the motor in the bulb tube oil pump is controlled in an open loop mode, and no monitoring is carried out. When the power supply abnormality or the starting capacitance abnormality of the bulb tube oil pump occurs, the abnormality cannot be detected, and the damage of the bulb tube oil pump cannot be prevented and avoided.
Based on this, the present case has been made.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a control system and a control method for a medical CT bulb tube heat dissipation oil pump, which can monitor whether the power supply and the starting of the bulb tube oil pump are abnormal or not in real time and prevent the bulb tube oil pump from being damaged.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a control system of a medical CT bulb tube heat dissipation oil pump comprises a controller, a peripheral power supply control circuit, a voltage signal acquisition circuit and a current signal acquisition circuit; the input end of the peripheral power supply control circuit is connected with the controller, and the output end of the peripheral power supply control circuit is connected with the oil pump motor; the input end of the voltage signal acquisition circuit is connected with the oil pump motor, and the output end of the voltage signal acquisition circuit is connected with the controller; the input end of the current signal acquisition circuit is connected with the oil pump motor, and the output end of the current signal acquisition circuit is connected with the controller; the voltage and the current of the motor are collected and fed back to the controller through the voltage signal collecting circuit and the current signal collecting circuit, and the controller analyzes the voltage signal and the current signal fed back and controls the peripheral power supply control circuit to supply power or cut off the power to the motor.
Furthermore, the device also comprises an alarm device connected with the controller; the controller analyzes the fed back voltage signal and current signal, and controls the alarm device to give an alarm when the voltage and the current are abnormal.
Further, the oil pump control system further comprises an upper computer system connected with the controller through a Can bus and used for acquiring and displaying the oil pump state information.
Further, the alarm device is an audible and visual alarm device.
A control method of a medical CT bulb tube heat radiation oil pump comprises the following steps:
s1: supplying power to an oil pump motor;
s2: judging whether the effective value of the voltage is normal or not, alarming and stopping supplying power to the oil pump motor when the effective value of the voltage is abnormal, and continuing the next step when the effective value of the voltage is normal;
s3: judging whether the current effective value is normal or not, alarming and stopping supplying power to the oil pump motor when the current effective value is abnormal, and continuing the next step when the current effective value is normal;
S4: judging whether the working frequency of the motor is normal or not, alarming and stopping supplying power to the oil pump motor when the working frequency of the motor is abnormal, and continuing the next step when the working frequency of the motor is normal;
s5: and judging whether the scanning movement interval time is within a preset time range, stopping supplying power to the oil pump motor when the scanning movement interval time exceeds the preset time, and continuing supplying power to the oil pump motor when the scanning movement interval time does not exceed the preset time.
The principle and the beneficial effects of the invention are as follows:
(1) The invention detects the voltage signal and the current signal fed back by the bulb tube oil pump in real time, processes the voltage signal and the current signal and analyzes the power supply condition of the bulb tube oil pump and the working state of the starting capacitor. When detecting unusual, in time report to the police, cut off the power supply, can indicate the starting capacitor who detects oil pump power supply line or change the motor to prevent that the bearing of the inside motor of bulb oil pump from being blocked and dying, avoid the bulb oil pump to damage.
(2) according to the invention, after the CT system is powered on, the power supply to the oil pump is not carried out. When the requirement for scanning the patient appears for the first time, the ball tube oil pump is powered. The service life of the motor and the starting capacitor in the bulb tube oil pump can be effectively prolonged.
(3) after the patient is scanned for the last time, if the requirement for scanning the patient for the next time is not received within a certain interval time, the power supply of the bulb tube oil pump is automatically stopped under the control of a program. The service life of the motor in the oil pump can be effectively prolonged.
drawings
Fig. 1 is a schematic block diagram of a control system of a medical CT bulb tube heat-dissipating oil pump according to the present embodiment;
Fig. 2 is a software flowchart of a method for controlling a medical CT bulb heat-dissipating oil pump according to this embodiment.
Detailed Description
In order to make the technical means and technical effects achieved by the technical means of the present invention more clearly and more perfectly disclosed, the following embodiments are provided, and the following detailed description is made with reference to the accompanying drawings:
The control system of the medical CT bulb tube heat dissipation oil pump is connected with an oil pump motor and comprises a bulb tube oil pump control device, wherein the bulb tube oil pump control device comprises a controller, a peripheral power supply control circuit, a voltage signal acquisition circuit and a current signal acquisition circuit; the input end of the peripheral power supply control circuit is connected with the controller, and the output end of the peripheral power supply control circuit is connected with the oil pump motor; the input end of the voltage signal acquisition circuit is connected with the oil pump motor, and the output end of the voltage signal acquisition circuit is connected with the controller; the input end of the current signal acquisition circuit is connected with the oil pump motor, and the output end of the current signal acquisition circuit is connected with the controller; the voltage and the current of the motor are collected and fed back to the controller through the voltage signal collecting circuit and the current signal collecting circuit, and the controller analyzes the voltage signal and the current signal fed back and controls the peripheral power supply control circuit to supply power or cut off the power to the motor.
The embodiment also comprises an alarm device connected with the controller; the controller analyzes the fed back voltage signal and current signal, and controls the alarm device to give an alarm when the voltage and the current are abnormal. The alarm device of the embodiment is an audible and visual alarm device.
The embodiment also comprises an upper computer system connected with the controller through a Can bus and used for acquiring and displaying the oil pump state information.
the control method for the medical CT bulb tube heat radiation oil pump comprises the following steps:
S1: supplying power to an oil pump motor; after the CT system is powered on, the oil pump is not powered. Only when the first scanning requirement appears, the oil pump of the bulb tube is powered. The service life of the motor and the starting capacitor in the bulb tube oil pump can be effectively prolonged.
s2: judging whether the effective value of the voltage is normal or not, alarming and stopping supplying power to the oil pump motor when the effective value of the voltage is abnormal, and continuing the next step when the effective value of the voltage is normal;
s3: judging whether the current effective value is normal or not, alarming and stopping supplying power to the oil pump motor when the current effective value is abnormal, and continuing the next step when the current effective value is normal;
s4: judging whether the working frequency of the motor is normal or not, alarming and stopping supplying power to the oil pump motor when the working frequency of the motor is abnormal, and continuing the next step when the working frequency of the motor is normal;
The steps S2 to S4 are to process the feedback signal of the voltage and the feedback signal of the current of the bulb oil pump in real time, and to perform time-frequency domain transformation on the collected signals through a software algorithm. And analyzing whether the power supply of the bulb tube oil pump and the starting capacitor of the oil pump motor are normal or not according to the calculated frequency, amplitude and phase. And the upper computer judges whether the power supply of the oil pump is abnormal or not according to the received real-time current and voltage information, namely time domain analysis. And transforming the dynamic signals of the voltage and the current from a time domain to a frequency domain through Fourier series to judge whether the working frequency of the motor is normal. The above is the prior art and is not described herein. If the abnormal condition appears in the analysis, just timely warning and suggestion maintainer go to detect the oil pump power supply line or change the starting capacitance of motor to prevent that the bearing of the inside motor of bulb oil pump from being blocked and dying, avoid the bulb oil pump to damage.
S5: and judging whether the scanning movement interval time is within a preset time range, stopping supplying power to the oil pump motor when the scanning movement interval time exceeds the preset time, and continuing supplying power to the oil pump motor when the scanning movement interval time does not exceed the preset time. After the scanning of the patient is finished, if the next scanning requirement is not received within a certain interval time, the power supply of the bulb tube oil pump is automatically cut off under the control of a program, and the service lives of a motor and a starting capacitor in the bulb tube oil pump can be effectively prolonged. In the embodiment, the heat capacity is checked during operation, the oil pump is started when the heat capacity is larger than 25%, and the oil pump is closed when the heat capacity is reduced to 10%, so that the oil pump can be prevented from being started and stopped frequently when the heat capacity is about 25%. The heat capacity is checked at shutdown, and if the heat capacity is less than 25%, the oil pump is shut down, otherwise the oil pump is shut down with a DCB delay of 120 minutes, in order to ensure that the heat capacity drops to 0 when the oil pump is shut down.
The above description is provided for the purpose of further elaboration of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be understood that the embodiments of the present invention are limited to the above description, and it should be understood that various simple deductions or substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and all such alternatives are included in the scope of the present invention.

Claims (5)

1. the utility model provides a control system of medical CT bulb pipe heat dissipation oil pump which characterized in that: the device comprises a controller, a peripheral power supply control circuit, a voltage signal acquisition circuit and a current signal acquisition circuit; the input end of the peripheral power supply control circuit is connected with the controller, and the output end of the peripheral power supply control circuit is connected with the oil pump motor; the input end of the voltage signal acquisition circuit is connected with the oil pump motor, and the output end of the voltage signal acquisition circuit is connected with the controller; the input end of the current signal acquisition circuit is connected with the oil pump motor, and the output end of the current signal acquisition circuit is connected with the controller; the voltage and the current of the motor are collected and fed back to the controller through the voltage signal collecting circuit and the current signal collecting circuit, and the controller analyzes the voltage signal and the current signal fed back and controls the peripheral power supply control circuit to supply power or cut off the power to the motor.
2. The control method of the medical CT bulb tube heat-dissipating oil pump as claimed in claim 1, wherein: the alarm device is connected with the controller; the controller analyzes the fed back voltage signal and current signal, and controls the alarm device to give an alarm when the voltage and the current are abnormal.
3. The control method of the medical CT bulb tube heat-dissipating oil pump as claimed in claim 1, wherein: the system also comprises an upper computer system connected with the controller through a Can bus and used for acquiring and displaying the state information of the oil pump.
4. The control method of the medical CT bulb tube heat-dissipating oil pump as claimed in claim 1, wherein: the alarm device is a sound and light alarm device.
5. a control method of a medical CT bulb tube heat radiation oil pump comprises the following steps:
S1: supplying power to an oil pump motor;
s2: judging whether the effective value of the voltage is normal or not, alarming and stopping supplying power to the oil pump motor when the effective value of the voltage is abnormal, and continuing the next step when the effective value of the voltage is normal;
s3: judging whether the current effective value is normal or not, alarming and stopping supplying power to the oil pump motor when the current effective value is abnormal, and continuing the next step when the current effective value is normal;
S4: judging whether the working frequency of the motor is normal or not, alarming and stopping supplying power to the oil pump motor when the working frequency of the motor is abnormal, and continuing the next step when the working frequency of the motor is normal;
s5: and judging whether the scanning movement interval time is within a preset time range, stopping supplying power to the oil pump motor when the scanning movement interval time exceeds the preset time, and continuing supplying power to the oil pump motor when the scanning movement interval time does not exceed the preset time.
CN201910884350.1A 2019-09-19 2019-09-19 Control system and method for medical CT bulb tube heat dissipation oil pump Pending CN110543126A (en)

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Application Number Priority Date Filing Date Title
CN201910884350.1A CN110543126A (en) 2019-09-19 2019-09-19 Control system and method for medical CT bulb tube heat dissipation oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910884350.1A CN110543126A (en) 2019-09-19 2019-09-19 Control system and method for medical CT bulb tube heat dissipation oil pump

Publications (1)

Publication Number Publication Date
CN110543126A true CN110543126A (en) 2019-12-06

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Country Status (1)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1799508A (en) * 2006-01-18 2006-07-12 杭州灿维信息技术服务有限公司 CT bulb tube oil-duct temperature wireless monitoring system
CN101943921A (en) * 2010-08-10 2011-01-12 西安市双合软件技术有限公司 Intelligent control method and intelligent control device of transformer cooling system
CN203882949U (en) * 2014-03-27 2014-10-15 东莞市三维医疗设备有限公司 Vacuum oil change device applied to CT bulb tube
CN109646029A (en) * 2019-01-15 2019-04-19 麦默真空技术无锡有限公司 A kind of control method and system of CT bulb fault pre-alarming
CN210721070U (en) * 2019-09-19 2020-06-09 明峰医疗系统股份有限公司 Control system of medical CT bulb tube heat radiation oil pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1799508A (en) * 2006-01-18 2006-07-12 杭州灿维信息技术服务有限公司 CT bulb tube oil-duct temperature wireless monitoring system
CN101943921A (en) * 2010-08-10 2011-01-12 西安市双合软件技术有限公司 Intelligent control method and intelligent control device of transformer cooling system
CN203882949U (en) * 2014-03-27 2014-10-15 东莞市三维医疗设备有限公司 Vacuum oil change device applied to CT bulb tube
CN109646029A (en) * 2019-01-15 2019-04-19 麦默真空技术无锡有限公司 A kind of control method and system of CT bulb fault pre-alarming
CN210721070U (en) * 2019-09-19 2020-06-09 明峰医疗系统股份有限公司 Control system of medical CT bulb tube heat radiation oil pump

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