At present, color ultrasound has become an indispensable auxiliary examiner equipment in modern hospitals, effectively improving the diagnosis rate of the disease, but as a machine and equipment, it will be affected by various factors to produce failures and can not be used normally, the inconvenience caused by it has become a problem that cannot be ignored, so it is particularly important to analyze and repair the fault, this article will analyze the failure of color ultrasound, so as to propose an effective maintenance program
First, color ultrasound fault and analysis
Color ultrasound equipment is an extremely advanced diagnostic system, which uses the science and technology of Daxing, such as nuclear magnetic resonance technology, Pureware pure wave probe technology and tissue difference correction technology; The general color ultrasound system includes the following parts: probe, front signal acquisition part, power module control part, signal image processing part and output display part. The following is a detailed introduction to Philips color silk.
Fault analysis: (1) the color ultrasound system in the initial state after booting into the process, the system may appear sudden power failure, while the system of the blue AC source indicator will begin to flash, after the second opening of the system, the system will not appear any corresponding, such as such a problem, first should read the data, to determine whether there is a problem with the source part of the equipment; Many hospitals need to convert AC into DC when using color ultrasound equipment, and the DC power supply unit part of the device can be found in the power box at the bottom of the equipment, and the cover on the right side of the chassis can be seen; At the bottom of the equipment, the AC power supply part can be observed, the air circuit breaker is installed on the AC supply and application unit, and all the Philips color ultrasound equipment shenyuan contains several parts such as the main engine shenyuan transformer and power distribution board, and the main engine shenyuan is divided into power distribution boards. Front-end Shenyuan and back-end Shenyuan; The DC voltage generated by the front-end Shenyuan is +3.65v, +5.3V.+15y, +48V for the use of the front letter power distribution board of the equipment, and the DC voltage generated by the back-end power supply is supplied to the back-end Shenyuan distribution board; The role of the transformer is to convert the 220V AC into a standby signal of 12V, and AC filtering, the transformer is as usual, then the blue indicator light on the transformer is lit; When the device is powered, the voltage is protected, the indicator light is constantly blinking. The front end and the back end power distribution board constitute a power distribution board, the voltage generated by the front end is +3.65V and ± 5.3V for the front end board to use, and this voltage input CPU in the clock tracing screen part: and +15V and +48V of the hundred current voltage is loaded by the front end power supply into the back end power supply loaded as a high bed, the entire equipment switch has a rear source distribution board control, so only the back end of the source distribution board normal pressure can start the device normally, otherwise the device can not start the device.
(2-color ultrasound images have cloth-like interference.) This is a kind of interference fault caused by a variety of factors, and usually the judgment of the situation needs to be excluded and based on the principle of simplicity to complexity, only in this way can the interference factor be found; The source of interference should be considered from three aspects: electromagnetic interference outside the instrument and equipment; Interference inside the instrument and equipment; Interference generated by the probe. Troubleshooting method: to first check whether the sound interference comes from outside the device, turn off other gas equipment in the zai, and then observe whether there is interference on the color ultrasound image, such as after turning off the power supply of the electronic speed card device, the interference on the image disappears, indicating that the electronic card reader has electromagnetic interference to the device; If the card reader is close to the probe, the stronger the interference signal on the device; At this time, you can choose a card reader with good electromagnetic compatibility, the interference can disappear, and the instrument returns to normal.
(3) Enter the ultra-blue interface after normal boot, you can identify the probe normally and switch the probe; However, there is no super-blue image, and there is an error message, that is, TRANSIMI overload, the transmission circuit is loaded.
(4) During the T process, it is often impossible to select the LocalArchive Int.HD data stream after clicking the Archive key
Second, the maintenance method
Can not start the maintenance normally: should be in accordance with the relevant operation instructions, the new front end of the equipment and cut the new main source to the front end of the equipment source of the connector, to the maintenance manual short circuit, and then boot test; If there is a fault in the front end of the equipment, it can be booted normally; If the front of the device is not faulty, it will not be able to power on properly. The same method is used to detect the device back end. The detection results show that there is no fault in the front and back ends, and the power supply of the device host is detected to determine that the fault exists in the host power supply. After determining the fault, first disassemble the host power supply, adjust the multimeter to the measured voltage state, and then detect the back-end power distribution board SPD and then input +12V DC voltage, such as finding that the Source Distribution Board has no output, after careful observation, it is found that the FET connected to the back-end Shenyuan Distribution Board appears potential marks, then the same FIELD Effect Tube should be replaced before the field teaching, and then weld the FET indicator and the Shenlu board to point the harm.
TRANSIMI overload fault repair: In the face of a specific fault, you should first open the machine side panel shell, which contains eight TR plates, and want to determine which one is the problem.
Dust removal after removing the circuit board; There is still a fault in the assembly after dust removal, you should carefully observe the eight TR plates, and finally find that one of the patch capacitor color is abnormal, the color is darker as if it has been burned by high temperature, at this time, a power tube next to it and the surrounding patch Shen Rong are all replaced, and the fault can be eliminated.
Unable to select the repair of traffic failure: first enter Config, Admin.System, Admin.Options, together with the selection of Archive's washing state is very maintained in Disshed, such as in this case Taichuan should first be consulted by the temporary password can be consulted into the ContourConnectivitvsTcnp, check whether the system name is wrong, in general, the system name should match the serial number of the device, and the corresponding serial number can be found on the label of the device; Finally, if the system is still unable to return to normal, enter Start, Programs, SQLAnywhere, SybaseCentral, check whether GEMS-DB is in the Running state, if this state does not occur, it should be adjusted to the ratio state; If it cannot be retrieved, if there is an error in GEMS-DB, the CEMS-DB state can be rechecked, and the system can be restored to normal by restarting the machine after adjusting to the standard state.
III. Concluding Remarks
With the development of the economy, the emergence of color ultrasound has provided great help for the improvement of medical diagnosis. This article analyzes the possible failures of the color ultrasound, so that we understand that the color ultrasound can not avoid various failures in the use of the process, so the maintenance personnel must be in charge of the maintenance points, if necessary, you can find the help of a third-party maintenance company to ensure the normal operation of the color ultrasound system.
Guangzhou Rencheng Medical Equipment Maintenance Co., Ltd. is a wholly-owned subsidiary of Rencheng Medical Group, which is a professional medical ultrasound third-party maintenance service company.
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