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Medical air supply system and electrostatic protection circuit of communication circuit thereof

A communication line and gas supply system technology, applied in the circuit field, can solve problems such as communication quality degradation, achieve electrostatic protection, and improve communication quality and communication speed.

Inactive Publication Date: 2013-04-24
BEIJING AEONMED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a static electricity protection circuit for a medical gas supply system and its communication line, so as to solve the problem that the communication quality of the communication line of the medical gas supply system is reduced due to static electricity

Method used

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  • Medical air supply system and electrostatic protection circuit of communication circuit thereof

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] figure 1 It is a schematic diagram of the electrostatic protection circuit of the communication line of the medical gas supply system according to the embodiment of the present invention, such as figure 1 As shown, the communication line is a communication line between two RS485 communication interfaces and two SP485R communication chips, on the signal line and power line of the communication line between the first RS485 communication interface J1 and the first SP485R communication chip U1, A diode group is respectively connected in parallel, and each diode group includes two diodes connected in series in reverse phase, wherein the first diode group is connected to the first signal line...

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Abstract

The invention discloses a medical air supply system and an electrostatic protection circuit of a communication circuit of the medical air supply system. The electrostatic protection circuit comprises a first diode set, a second diode set and a third diode set, wherein the first diode set comprises a first diode and a second diode which are in series connection in a phase-inverting mode, a first end of the first diode set is grounded, and a second end of the first diode set is connected on a first signal line of the communication circuit, the second diode set comprises a third diode and a fourth diode which are in series connection in a phase-inverting mode, a first end of the second diode set is grounded, and a second end of the second diode set is connected on a second signal line of the communication circuit, and the third diode set comprises a fifth diode and a sixth diode, a first end of the third diode set is grounded, and a second end of the third diode set is connected on a power source line of the communication circuit. The communication circuit of the medical air supply system is the communication circuit between a communication interface and a communication chip. Through the electrostatic protection circuit, electrostatic protection to the communication circuit of the medical air supply system can be realized so as to enable communication to run normally, and communication quality and communication speed of the communication circuit are improved.

Description

technical field [0001] The invention relates to the field of circuits, in particular to an electrostatic protection circuit for a medical gas supply system and its communication lines. Background technique [0002] Medical gas supply system is an important aspect of hospital infrastructure construction and an indispensable part of a modern hospital. It includes medical oxygen supply system, negative pressure suction system, compressed air system and other medical gas systems (N 2 O.CO 2 , N 2 ) and medical paging systems, etc. Through reasonable design, the hospital can obtain a powerful gas supply system with low investment to ensure the efficient operation of the hospital's medical system. The basic types of medical gases are medical oxygen, negative pressure suction, compressed air, nitrogen, laughing gas and carbon dioxide and other gases. Oxygen is mainly used for oxygen inhalation of general patients, oxygen inhalation of critical patients and atomization of drugs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
Inventor 吴满立
Owner BEIJING AEONMED
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