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Hospital preparation room ventilation control circuit

A technology for controlling circuits and preparations, which is applied in the medical field and can solve problems such as slow air circulation and low ventilation efficiency

Pending Publication Date: 2021-08-31
张世松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of slow air circulation and low ventilation efficiency in the preparation room when there is no wind outside, the technical problem is to provide a ventilation control circuit for hospital preparation rooms with high ventilation efficiency

Method used

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  • Hospital preparation room ventilation control circuit
  • Hospital preparation room ventilation control circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A hospital preparation room ventilation control circuit, such as figure 1 As shown, it includes a power supply unit 1, a first potentiometer 2, a gas sensor 3, an OR gate circuit 4, a bistable control circuit 5, a thyristor drive circuit 6 and an exhaust motor 7, and the first potentiometer 2 is connected with the gas sensor 3, the gas sensor 3 is connected with the input end of the OR circuit 4, the output end of the OR circuit 4 is connected with the input end of the bistable control circuit 5, and the bistable control circuit The output end of the circuit 5 is connected with the input end of the thyristor drive circuit 6, the output end of the thyristor drive circuit 6 is connected with the exhaust motor 7, and the power supply unit 1 is a first potentiometer 2, a gas sensor 3. The OR gate circuit 4, the bistable control circuit 5, the thyristor drive circuit 6 and the exhaust motor 7 supply power.

[0024] After the hospital preparation room ventilation control cir...

Embodiment 2

[0026] On the basis of Example 1, such as figure 1 As shown, a temperature detection circuit 8, a temperature sensor 9 and a second potentiometer 10 are also included, the output end of the temperature detection circuit 8 is connected to the input end of the OR gate circuit 4, and the input end of the temperature detection circuit 8 is connected to the input end of the OR gate circuit 4. The temperature sensor 9 is connected, the second potentiometer 10 is connected to the temperature sensor 9 , and the power supply unit 1 supplies power for the temperature detection circuit 8 , the temperature sensor 9 and the second potentiometer 10 .

[0027] After the hospital preparation room ventilation control circuit is powered on, the temperature sensor 9 starts to work. The temperature sensor 9 can detect the temperature in the preparation room. The detection value of the temperature sensor 9 can be adjusted through the second potentiometer 10. When the temperature sensor 9 detects W...

Embodiment 3

[0029] A hospital preparation room ventilation control circuit, such as figure 2 As shown, the OR gate circuit 4 is a four-way 2-input OR gate 74LS32-U2, the 7-pin of the four-way 2-input OR gate 74LS32-U2 is grounded, and the 14-pin of the four-way 2-input OR gate 74LS32-U2 Connect to +9V.

[0030] The gas sensor 3 includes a resistor R1, a resistor R2, an electrolytic capacitor EC2 and a gas sensor QM1, the 4 pins of the gas sensor QM1 and its 6 pins are all connected to +9V, and the 5 pins of the gas sensor QM1 are connected in series with the resistance R1 is grounded, the 1 pin of the gas sensor QM1 is connected to its 3 pin, the 3 pin series resistor R2 of the gas sensor QM1 is grounded, the 3 pin series electrolytic capacitor EC2 of the gas sensor QM1 is grounded, the four The 2-input OR gate 74LS32-U2 is connected to the 3-pin of the gas sensor QM1.

[0031] The first potentiometer 2 is a potentiometer VR1, one end of the potentiometer VR1 and its adjustable end are...

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Abstract

The invention relates to the field of medical treatment and particularly relates to a ventilation control circuit for a hospital preparation room. A technical problem is to provide a hospital preparation room ventilation control circuit with high ventilation efficiency. The ventilation control circuit for the hospital preparation room comprises a power supply unit, a first potentiometer, a gas sensor, an OR gate circuit and the like; wherein the first potentiometer is connected with the gas-sensitive sensor, and the gas-sensitive sensor is connected with the input end of the OR gate circuit. Air in the preparation chamber can be exhausted through the air draft motor for ventilation, a good environment is kept in the preparation chamber, ventilation efficiency is high, the temperature in the preparation chamber can be detected through the temperature sensor, and when the temperature is too high, the air draft motor can be controlled to work, the temperature in the preparation chamber is reduced, and the temperature in the preparation chamber is prevented from being too high.

Description

technical field [0001] The invention relates to the medical field, in particular to a ventilation control circuit for a hospital preparation room. Background technique [0002] The preparation room is the place where medical units prepare preparations. Different from specialized pharmaceutical factories, the preparation room prepares many types of preparations with a small output. In order to ensure the quality of preparations, the quality of each product must meet the standards stipulated in the Pharmacopoeia. There are various medicines, so the indoor air quality tends to deteriorate. Now the ventilation is mainly done by opening the doors and windows. When there is no wind outside, the air circulation in the preparation room is relatively slow and the ventilation efficiency is low. [0003] Aiming at the current problems, we design a ventilation control circuit for hospital preparation room with high ventilation efficiency. Contents of the invention [0004] In order t...

Claims

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Application Information

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IPC IPC(8): G05D23/20F24F11/88F24F7/007F24F5/00
CPCG05D23/20F24F11/88F24F7/007F24F5/00F24F2110/10
Inventor 张世松
Owner 张世松