A kind of medical alarm and its working method

Abstract

The invention discloses a medical alarm device and a working method therefor. The medical alarm device comprises a power source circuit, a trigger circuit, an IC circuit and a power amplifier circuit, wherein the power source circuit is connected with the trigger circuit, the IC circuit and the power amplifier circuit; the trigger circuit is connected with the IC circuit, and the IC circuit is connected with the power amplifier circuit. The medical alarm device and the working method therefor can directly meet IEC60601-1-8 standards and are low in cost, and the power source circuit is small in power consumption.

Description

technical field [0001] The invention relates to an alarm, in particular to a medical alarm and its working method. Background technique [0002] At present, there are no finished products of direct alarms that meet the IEC60601 standard. The current solution for related industries is to use a simple buzzer (passive), and then the medical electrical appliance manufacturer will design the sound source and control circuit that meet the IEC60601 standard on the main board of the product. In general, the alarm only needs to be conventional. The disadvantage of this technology is that if the old motherboard of the medical equipment manufacturer does not meet the national standard, it must be modified, which will increase the cost and require a lot of technical verification to verify the reliability of the new solution to meet the requirements. The design process required by IEC60601 is also cumbersome; if my invention is used directly, it will reduce a lot of design troubles at th...

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Problems solved by technology

[0002] At present, there are no finished products of direct alarms that meet the IEC60601 standard. The current solution for related industries is to use a simple buzzer (passive), and then the medical electrical appliance manufacturer will design the sound source and control circuit that meet the IEC60601 standard on the main board of the product. In general, the alarm only needs to be conventional. The disadvantage of this technology is that if the old motherboard of the medical equipment manufacturer does not meet the national standard, it must be modified, which will increase the cost and require a lot of technical verification to verify the reliability of the new solution to meet the requirements. The design process required by IEC60601 is also cumbersome; if I use my invention directly, it will reduce a lot of design troubles at the user end

[0003] Now even if it is made on the motherboard of medical electrical appliances that can meet the design principles of the IEC60601 standard, the manufacturing cost is relatively high. At present, the best circuit we know is the power control circuit + voice IC circuit solution with power amplifier (which uses The current market price of the voice IC with power amplifier is about 3.50RMB), and the power supply control module is about 1.00RMB. The circuit has been redesigned to separate the voice IC from the power amplifier, and the combination of the most commonly used (most mature) voice IC and power amplifier LM386 in the market is selected, and the power control circuit does not use modules, but uses a combination of discrete components developed by ourselves. (Combined circuits are all using the most mature components on the market at present, and the price is relatively cheap)

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