Pulse width modulation (PWM) signal anti-interference output system for medical equipment and anti-interference method for PWM signal anti-interference output system
A technology of PWM signal and medical equipment, applied in the field of medical equipment, can solve problems such as poor anti-interference ability, wrong execution signal of single-chip microcomputer, wrong action of execution parts of medical equipment, etc., and achieve the effect of strong anti-interference ability
Inactive Publication Date: 2014-06-18
UNIV OF SHANGHAI FOR SCI & TECH
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[0002] Many medical devices are equipped with single-chip microcomputer control systems. During the operation of the single-chip microcomputer system, if the peak interference amplitude in the common-mode interference reaches 2V to 50V, and the time lasts for several microseconds, it will cause logic errors and data loss in the single-chip microcomputer. The single-chip microcomputer outputs wrong execution signals, causing the execution parts of the medical equipment to perform wrong actions, so the existing medical equipment with single-chip microcomputer systems have poor anti-interference ability
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[0024] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.
[0025] Such as figure 1 As shown, a PWM signal anti-interference output system of medical equipment provided by the embodiment of the present invention, the medical equipment is provided with a control panel D1, a control switch D2, and an execution component D3, and the system includes a single-chip microcomputer, which is characterized in that: There are two single-chip microcomputers, which are respectively the main single-chip microcomputer U1 and the slave single-chip microcomputer U2;
[0026] The single-chip microcomputer U1 is provided with a communication interface (TXD pin and RXD pin), a serial data output terminal ...
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The invention discloses a pulse width modulation (PWM) signal anti-interference output system for medical equipment and an anti-interference method for the PWM signal anti-interference output system and relates to the technical field of medical instruments. By the invention, the anti-interference property can be improved. The medical equipment is provided with a control panel, a control switch and an execution part; the system comprises a master singlechip and a slave singlechip, wherein both the communication interfaces of the master singlechip and the communication interfaces of the slave singlechip are connected with the control panel of the medical equipment; the interruption signal input end of the master singlechip is connected with the control switch of the medical equipment; the PWM signal output end of the master singlechip is connected with the execution part of the medical equipment; the alarm signal output end of the master singlechip is connected with an alarm part; the serial data output end of the master singlechip is connected to the serial data input end of the slave singlechip; the serial data input end of the master singlechip is connected to the serial data output end of the slave singlechip; the enabling signal end of the master singlechip is connected to the enabling signal end of the slave singlechip; and the clock signal end of the master singlechip is connected to the clock signal end of the slave singlechip. By the system and the method, wrong execution signals cannot be output.
Description
technical field [0001] The invention relates to medical instrument technology, in particular to the technology of a PWM signal anti-interference output system of medical equipment and an anti-interference method thereof. Background technique [0002] Many medical devices are equipped with single-chip microcomputer control systems. During the operation of the single-chip microcomputer system, if the peak interference amplitude in the common-mode interference reaches 2V to 50V, and the time lasts for several microseconds, it will cause logic errors and data loss in the single-chip microcomputer. The single-chip microcomputer outputs wrong execution signals, causing the execution parts of the medical equipment to perform wrong actions. Therefore, the anti-interference ability of the existing medical equipment with the single-chip microcomputer system is poor. Contents of the invention [0003] In view of the defects existing in the above-mentioned prior art, the technical pro...
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IPC IPC(8): G06F19/00
Inventor 陆兆丹宓现强周正谊
Owner UNIV OF SHANGHAI FOR SCI & TECH