CN219456779U - Medical equipment water level detection circuit - Google Patents

Medical equipment water level detection circuit Download PDF

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Publication number
CN219456779U
CN219456779U CN202320027427.5U CN202320027427U CN219456779U CN 219456779 U CN219456779 U CN 219456779U CN 202320027427 U CN202320027427 U CN 202320027427U CN 219456779 U CN219456779 U CN 219456779U
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pin
circuit
resistor
numerical comparator
sn74ls85
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朱丽梅
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Shanghai Lechen Biological Science & Technology Co ltd
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Shanghai Lechen Biological Science & Technology Co ltd
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Abstract

The utility model relates to the field of medical treatment, in particular to a water level detection circuit of medical equipment. The technical problems of the utility model are as follows: a medical device water level detection circuit is provided which can hold sufficient water in a medical device. A water level detection circuit of medical equipment comprises a power supply circuit, a second group of photoelectric detection circuits, a first group of photoelectric detection circuits, a comparator circuit and the like; the output ends of the second group of photoelectric detection circuits and the first group of photoelectric detection circuits are connected with the input end of the comparator circuit. According to the utility model, the water level of the medical equipment can be detected through the second group of photoelectric detection circuits and the first group of photoelectric detection circuits, when the water of the medical equipment is insufficient, the liquid pump can be controlled to work, the medical equipment is added with water, so that the medical equipment can keep enough water, and the MCU can display the water level of the medical equipment.

Description

Medical equipment water level detection circuit
Technical Field
The utility model relates to the field of medical treatment, in particular to a water level detection circuit of medical equipment.
Background
Medical equipment refers to instruments, appliances and equipment for human body, in the medical industry, the patient is frequently required to be monitored, checked and treated by using the medical equipment, the medical equipment has important functions in the medical industry, the development of medical treatment depends on the development of the medical equipment to a great extent, the medical equipment is frequently required to use water in the use process for cleaning the patient, but most medical equipment has no function of detecting the water level, medical staff is required to pay attention to the water level, and when the medical staff works relatively busy, the water level of the medical equipment can be forgotten to be observed, so that the water adding of the medical equipment is not timely.
We design a medical equipment water level detection circuit which can make the medical equipment hold enough water to solve the existing problems.
Disclosure of Invention
In order to overcome the defect that medical equipment is not timely filled with water because medical equipment water level can be forgotten to be observed when medical staff work is busy, the utility model has the following technical problems: a medical device water level detection circuit is provided which can hold sufficient water in a medical device.
The utility model provides a medical equipment water level detection circuit, includes power supply circuit, second group photoelectric detection circuit, first group photoelectric detection circuit, comparator circuit, inverter circuit, second numerical value comparator circuit, first setting switch circuit, first LED pilot lamp, second setting switch circuit, second LED pilot lamp, relay drive circuit, drawing liquid pump and MCU, the output of second group photoelectric detection circuit and first group photoelectric detection circuit all is connected with comparator circuit's input, comparator circuit's output and inverter circuit's input, second numerical value comparator circuit and first numerical value comparator circuit's input all are connected with inverter circuit's output, first numerical value comparator circuit's input and first setting switch circuit's output, first numerical value comparator circuit's input and first LED pilot lamp are connected, second numerical value comparator circuit's input and second setting switch circuit's output are connected, second numerical value comparator circuit and second LED pilot lamp input and second setting switch circuit, second numerical value comparator circuit and second LED pilot lamp input and second LED pilot lamp are connected, second numerical value comparator circuit and second LED drive circuit, second numerical value comparator circuit and second LED pilot lamp input and second setting switch circuit.
Optionally, the second group of photoelectric detection circuits includes optocouplers OPTOISO1-U3, optocouplers OPTOISO1-U5, a potentiometer VR1, a potentiometer VR2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a resistor R6, the emitters of the optocouplers OPTOISO1-U3 are serially connected with a resistor R3, cathodes of the optocouplers OPTOISO1-U3 are grounded, anodes of the optocouplers OPTOISO1-U3 are connected with one end of a resistor R2, the other end of the resistor R2 is connected with +5v, the resistor R1 is serially connected with a potentiometer VR1, the other end of the resistor R1 is connected with +5v, the emitters of the optocouplers opiso 1-U5 are serially connected with a resistor R6, the cathodes of the optocouplers OPTOISO1-U5 are grounded, anodes of the optocouplers OPTOISO1-U5 are serially connected with a resistor R5, the other end of the optocouplers optocoupler opiso 1-U5 is connected with a resistor 5, and the other end of the resistor R4 is serially connected with a resistor 5, and the other end of the resistor 4 is connected with a resistor 5.
Optionally, the first group of photoelectric detection circuits includes optocouplers OPTOISO1-U8, optocouplers OPTOISO1-U9, a potentiometer VR3, a potentiometer VR4, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a resistor R13, the emitters of the optocouplers OPTOISO1-U8 are serially connected with a resistor R10 to be grounded, the cathodes of the optocouplers OPTOISO1-U8 are grounded, the anodes of the optocouplers OPTOISO1-U8 are connected with one end of the resistor R8, the other end of the resistor R8 is connected with +5v, the resistor R7 is serially connected with a potentiometer VR3, the other end of the resistor R7 is connected with +5v, the other end of the potentiometer VR3 is grounded with the adjustable end thereof, the emitters of the optocouplers OPTOISO1-U9 are serially connected with a resistor R13 to be grounded, the cathodes of the optocouplers OPTOISO1-U9 are grounded, the anodes of the optocouplers optocoupler opiso 1-U9 are connected with one end of the resistor R8, the other end of the resistor R11 is connected with the other end of the resistor 4 in series with the resistor V, and the other end of the resistor 11 is connected with the other end of the resistor 4 in series with the resistor.
Optionally, the comparator circuit includes a dual operational amplifier LM358-U2 and a dual operational amplifier LM358-U6, the 4 pin of the dual operational amplifier LM358-U2 is grounded, the 8 pin of the dual operational amplifier LM358-U2 is connected with +5v, the 2 pin of the dual operational amplifier LM358-U2 is connected with the series intermediate point of the resistor R1 and the potentiometer VR1, the 3 pin of the dual operational amplifier LM358-U2 is connected with the collector of the optocoupler OPTOISO1-U3, the 4 pin of the dual operational amplifier LM358-U6 is grounded, the 8 pin of the dual operational amplifier LM358-U6 is connected with +5v, the 2 pin of the dual operational amplifier LM358-U6 is connected with the series intermediate point of the resistor R4 and the potentiometer VR2, and the 3 pin of the dual operational amplifier LM358-U6 is connected with the collector of the optocoupler OPTOISO 1-U5.
Optionally, the inverter circuit is a six-input inverter 74LS04-U1, 7 pins of the six-input inverter 74LS04-U1 are grounded, 14 pins of the six-input inverter 74LS04-U1 are connected with +5V, 3 pins of the six-input inverter 74LS04-U1 are connected with 7 pins of a dual operational amplifier LM358-U2, 1 pin of the six-input inverter 74LS04-U1 is connected with 1 pin of the dual operational amplifier LM358-U2, 5 pins of the six-input inverter 74LS04-U1 are connected with 1 pin of the dual operational amplifier LM358-U6, and 9 pins of the six-input inverter 74LS04-U1 are connected with 7 pins of the dual operational amplifier LM 358-U6.
Optionally, the second digital comparator circuit is a digital comparator SN74LS85-U4, pins 2, 4 and 8 of the digital comparator SN74LS85-U4 are all grounded, pins 3 and 16 of the digital comparator SN74LS85-U4 are all connected with +5v, pin 10 of the digital comparator SN74LS85-U4 is connected with pin 2 of the six input inverter 74LS04-U1, pin 13 of the digital comparator SN74LS85-U4 is connected with pin 6 of the six input inverter 74LS04-U1, and pin 15 of the digital comparator SN74LS85-U4 is connected with pin 8 of the six input inverter 74LS 04-U1.
Optionally, the first numerical comparator circuit is a numerical comparator SN74LS85-U7, pins 2, 4 and 8 of the numerical comparator SN74LS85-U7 are all grounded, pins 3 and 16 of the numerical comparator SN74LS85-U7 are all connected with +5v, pin 10 of the numerical comparator SN74LS85-U7 is connected with pin 2 of the six-input inverter 74LS04-U1, pin 13 of the numerical comparator SN74LS85-U7 is connected with pin 6 of the six-input inverter 74LS04-U1, and pin 15 of the numerical comparator SN74LS85-U7 is connected with pin 8 of the six-input inverter 74LS 04-U1.
Optionally, the first setting switch circuit is a dial switch S1, pins 9, 11, 13 and 15 of the dial switch S1 are all connected with +5v, pins 10, 12, 14 and 16 of the dial switch S1 are all grounded, pins 1 and 2 of the dial switch S1 are all connected with pin 9 of the numerical comparator SN74LS85-U7, pins 3 and 4 of the dial switch S1 are all connected with pin 11 of the numerical comparator SN74LS85-U7, pins 5 and 6 of the dial switch S1 are all connected with pin 14 of the numerical comparator SN74LS85-U7, and pins 7 and 8 of the dial switch S1 are all connected with pin 1 of the numerical comparator SN74LS 85-U7.
Optionally, the second setting switch circuit is a dial switch S2, pins 9, 11, 13 and 15 of the dial switch S2 are all connected with +5v, pins 10, 12, 14 and 16 of the dial switch S2 are all grounded, pins 1 and 2 of the dial switch S2 are all connected with pin 9 of the numerical comparator SN74LS85-U7, pins 3 and 4 of the dial switch S2 are all connected with pin 11 of the numerical comparator SN74LS85-U4, pins 5 and 6 of the dial switch S2 are all connected with pin 14 of the numerical comparator SN74LS85-U4, and pins 7 and 8 of the dial switch S2 are all connected with pin 1 of the numerical comparator SN74LS 85-U4.
Optionally, the relay driving circuit comprises a time-base integrated circuit NE555-U10, a light emitting diode VD1, a light emitting diode VD2, a relay RL1, a diode D1, a resistor R12, a resistor R14 and a capacitor C1, wherein the 6 pin of the numerical comparator SN74LS85-U4 is connected with the 6 pin of the time-base integrated circuit NE555-U10, the 5 pin of the numerical comparator SN74LS85-U4 is connected with the 2 pin of the time-base integrated circuit NE555-U10, the 5 pin of the time-base integrated circuit NE555-U10 is connected with the capacitor C1 in series, the 6 pin of the time-base integrated circuit NE555-U10 is connected with the cathode of the light emitting diode VD2, the anode of the light emitting diode VD2 is connected with +5V, the 2 pin of the time-base integrated circuit NE555-U10 is connected with the cathode of the light emitting diode 1, the 4 pin and the 8 pin of the time-base integrated circuit NE555-U10 are connected with +5V, the cathode of the time-base integrated circuit NE555-U10 is connected with the cathode of the light emitting diode RL1, and the end of the light emitting diode is connected with the end of the relay RL1, and the end of the relay RL1 is connected with the end of the relay RL 1.
The beneficial effects of the utility model are as follows: according to the utility model, the water level of the medical equipment can be detected through the second group of photoelectric detection circuits and the first group of photoelectric detection circuits, when the water of the medical equipment is insufficient, the liquid pump can be controlled to work, the medical equipment is added with water, so that the medical equipment can keep enough water, and the MCU can display the water level of the medical equipment.
Drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is a schematic circuit diagram of the present utility model.
The reference symbols in the drawings: 1: power supply circuit, 2: a second group of photodetection circuits, 3: a first group of photo detection circuits, 4: comparator circuit, 5: inverter circuit, 6: second digital comparator circuit, 7: first numerical comparator circuit, 8: first setting switch circuit, 9: first LED pilot lamp, 10: second setting switch circuit, 11: second LED indicator, 12: relay driving circuit, 13: pump, 14: and (3) an MCU.
Detailed Description
Embodiments of the present utility model will be described below with reference to the drawings.
Example 1
A water level detection circuit of medical equipment is shown in figure 1, and comprises a power supply circuit 1, a second group of photoelectric detection circuits 2, a first group of photoelectric detection circuits 3, a comparator circuit 4, an inverter circuit 5, a second numerical comparator circuit 6, a first numerical comparator circuit 7, a first setting switch circuit 8, a first LED indicator lamp 9, a second setting switch circuit 10, a second LED indicator lamp 11, a relay driving circuit 12, a liquid pump 13 and an MCU14, wherein the output ends of the second group of photoelectric detection circuits 2 and the first group of photoelectric detection circuits 3 are connected with the input end of the comparator circuit 4, the output end of the comparator circuit 4 is connected with the input end of the inverter circuit 5, the input ends of the second numerical comparator circuit 6 and the first numerical comparator circuit 7 are connected with the output end of the inverter circuit 5, the input end of the first numerical comparator circuit 7 is connected with the output end of the first setting switch circuit 8, the input end of the first numerical comparator circuit 7 is connected with the first LED indicator lamp 9, the input end of the second numerical comparator circuit 6 is connected with the output end of the second setting switch circuit 10, the input end of the second numerical comparator circuit 6 is connected with the second LED indicator lamp 11, the output ends of the second numerical comparator circuit 6 and the first numerical comparator circuit 7 are connected with the input end of the relay drive circuit 12, the liquid pump 13 and the MCU14 are connected with the output end of the relay drive circuit 12, the power supply circuit 1 is a second group of photoelectric detection circuits 2, a first group of photoelectric detection circuits 3, a comparator circuit 4, an inverter circuit 5, a second numerical comparator circuit 6, a first numerical comparator circuit 7, a first setting switch circuit 8, a third power supply circuit 1 is a fourth group of photoelectric detection circuits 7, a fifth power supply circuit 8, a fifth power supply circuit, the first LED indicator lamp 9, the second setting switch circuit 10, the second LED indicator lamp 11, the relay driving circuit 12, the liquid pump 13 and the MCU14 are powered.
The medical staff sets the highest water level of the first numerical comparator circuit 7 through the first setting switch circuit 8, then sets the lowest water level of the second numerical comparator circuit 6 through the second setting switch circuit 10, the second group of photoelectric detection circuits 2 and the first group of photoelectric detection circuits 3 can detect the water level of medical equipment, then voltage signals are input into the comparator circuit 4, the comparator circuit 4 converts the voltage signals into standard signals, the standard signals are input into the inverter circuit 5, the inverter circuit 5 carries out 180-degree phase inversion on the standard signals to obtain a signal, the signal is input into the second numerical comparator circuit 6 and the first numerical comparator circuit 7 and is compared with the highest water level and the lowest water level, the relay driving circuit 12 controls the MCU14 to work, the MCU14 can display the current water level, when the water level of the medical equipment is lower than the lowest water level, the second LED indicator lamp 11 is on, the relay driving circuit 12 controls the liquid pump 13 to work, the liquid pump 13 sucks water into the medical equipment, when the water level of the medical equipment reaches the highest, the second LED indicator lamp 11, the first LED indicator lamp 9 is on, the first liquid pump 9 is on, the liquid pump 12 is controlled to be turned off, and the medical equipment is kept to be closed.
Example 2
The second group of photoelectric detection circuits 2 comprises photoelectric couplers OPTOISO1-U3, photoelectric couplers OPTOISO1-U5, a potentiometer VR1, a potentiometer VR2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a resistor R6, wherein the emitters of the photoelectric couplers OPTOISO1-U3 are connected in series with the resistor R3 to the ground, the cathodes of the photoelectric couplers OPTOISO1-U3 are grounded, the anodes of the photoelectric couplers OPTOISO1-U3 are connected with one end of the resistor R2, the other end of the resistor R2 is connected with +5V, the resistor R1 is connected in series with the potentiometer VR1, the other end of the potentiometer VR1 is grounded with the adjustable end of the potentiometer VR1, the emitters of the photoelectric couplers OPTOISO1-U5 are connected in series with the resistor R6 to the ground, the anodes of the photoelectric couplers OPTOISO1-U5 are grounded with the other end of the photoelectric couplers OPTOISO 5, the other end of the photoelectric couplers OPTOISO 4 is connected with the resistor R5, and the other end of the resistor VR4 is connected with the other end of the potentiometer VR 5 in series with the resistor R5.
The first group of photoelectric detection circuits 3 comprises photoelectric couplers OPTOISO1-U8, photoelectric couplers OPTOISO1-U9, a potentiometer VR3, a potentiometer VR4, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a resistor R13, wherein the emitters of the photoelectric couplers OPTOISO1-U8 are connected in series, the cathodes of the photoelectric couplers OPTOISO1-U8 are grounded, the anodes of the photoelectric couplers OPTOISO1-U8 are connected with one end of the resistor R8, the other end of the resistor R8 is connected with +5V in series, the other end of the resistor R7 is connected with +5V, the other end of the potentiometer VR3 is grounded with the adjustable end of the potentiometer, the emitters of the photoelectric couplers OPISO 1-U9 are connected in series with the resistor R13, the cathodes of the photoelectric couplers OPTOISO1-U9 are grounded, the anodes of the photoelectric couplers OPTOISO1-U9 are connected with one end of the resistor R8, the other end of the photoelectric couplers OPTOISO1-U9 is connected with the resistor R11, and the other end of the resistor VR4 is connected with the adjustable end of the resistor in series, and the other end of the resistor VR4 is connected with the adjustable end of the resistor.
The comparator circuit 4 comprises a dual operational amplifier LM358-U2 and a dual operational amplifier LM358-U6, wherein the 4 pin of the dual operational amplifier LM358-U2 is grounded, the 8 pin of the dual operational amplifier LM358-U2 is connected with +5V, the 2 pin of the dual operational amplifier LM358-U2 is connected with the series intermediate point of a resistor R1 and a potentiometer VR1, the 3 pin of the dual operational amplifier LM358-U2 is connected with the collector of an optocoupler OPTOISO1-U3, the 4 pin of the dual operational amplifier LM358-U6 is grounded, the 8 pin of the dual operational amplifier LM358-U6 is connected with +5V, the 2 pin of the dual operational amplifier LM358-U6 is connected with the series intermediate point of the resistor R4 and the potentiometer VR2, and the 3 pin of the dual operational amplifier LM358-U6 is connected with the collector of the optocoupler OPTOISO 1-U5.
The inverter circuit 5 is a six-input inverter 74LS04-U1, 7 pins of the six-input inverter 74LS04-U1 are grounded, 14 pins of the six-input inverter 74LS04-U1 are connected with +5V, 3 pins of the six-input inverter 74LS04-U1 are connected with 7 pins of a dual operational amplifier LM358-U2, 1 pin of the six-input inverter 74LS04-U1 is connected with 1 pin of the dual operational amplifier LM358-U2, 5 pins of the six-input inverter 74LS04-U1 are connected with 1 pin of the dual operational amplifier LM358-U6, and 9 pins of the six-input inverter 74LS04-U1 are connected with 7 pins of the dual operational amplifier LM 358-U6.
The second numerical comparator circuit 6 is a numerical comparator SN74LS85-U4, the 2 pin, the 4 pin and the 8 pin of the numerical comparator SN74LS85-U4 are all grounded, the 3 pin and the 16 pin of the numerical comparator SN74LS85-U4 are all connected with +5V, the 10 pin of the numerical comparator SN74LS85-U4 is connected with the 2 pin of the six-input inverter 74LS04-U1, the 13 pin of the numerical comparator SN74LS85-U4 is connected with the 6 pin of the six-input inverter 74LS04-U1, and the 15 pin of the numerical comparator SN74LS85-U4 is connected with the 8 pin of the six-input inverter 74LS 04-U1.
The first numerical comparator circuit 7 is a numerical comparator SN74LS85-U7, the 2 pins, 4 pins and 8 pins of the numerical comparator SN74LS85-U7 are all grounded, the 3 pins and 16 pins of the numerical comparator SN74LS85-U7 are all connected with +5V, the 10 pin of the numerical comparator SN74LS85-U7 is connected with the 2 pin of the six-input inverter 74LS04-U1, the 13 pin of the numerical comparator SN74LS85-U7 is connected with the 6 pin of the six-input inverter 74LS04-U1, and the 15 pin of the numerical comparator SN74LS85-U7 is connected with the 8 pin of the six-input inverter 74LS 04-U1.
The first setting switch circuit 8 is a dial switch S1, pins 9, 11, 13 and 15 of the dial switch S1 are all connected with +5V, pins 10, 12, 14 and 16 of the dial switch S1 are all grounded, pins 1 and 2 of the dial switch S1 are all connected with pin 9 of the numerical comparator SN74LS85-U7, pins 3 and 4 of the dial switch S1 are all connected with pin 11 of the numerical comparator SN74LS85-U7, pins 5 and 6 of the dial switch S1 are all connected with pin 14 of the numerical comparator SN74LS85-U7, and pins 7 and 8 of the dial switch S1 are all connected with pin 1 of the numerical comparator SN74LS 85-U7.
The second setting switch circuit 10 is a dial switch S2, pins 9, 11, 13 and 15 of the dial switch S2 are all connected with +5V, pins 10, 12, 14 and 16 of the dial switch S2 are all grounded, pins 1 and 2 of the dial switch S2 are all connected with pin 9 of the numerical comparator SN74LS85-U7, pins 3 and 4 of the dial switch S2 are all connected with pin 11 of the numerical comparator SN74LS85-U4, pins 5 and 6 of the dial switch S2 are all connected with pin 14 of the numerical comparator SN74LS85-U4, and pins 7 and 8 of the dial switch S2 are all connected with pin 1 of the numerical comparator SN74LS 85-U4.
The relay driving circuit 12 comprises a time-based integrated circuit NE555-U10, a light emitting diode VD1, a light emitting diode VD2, a relay RL1, a diode D1, a resistor R12, a resistor R14 and a capacitor C1, wherein the 6 pin of the numerical comparator SN74LS85-U4 is connected with the 6 pin of the time-based integrated circuit NE555-U10, the 5 pin of the numerical comparator SN74LS85-U4 is connected with the 2 pin of the time-based integrated circuit NE555-U10, the 5 pin of the time-based integrated circuit NE555-U10 is connected with the capacitor C1 in series, the 6 pin of the time-based integrated circuit NE555-U10 is connected with the cathode of the light emitting diode VD2, the anode of the light emitting diode VD2 is connected with +5V, the 2 pin of the time-based integrated circuit NE555-U10 is connected with the cathode of the light emitting diode VD1, the 4 pin and the 8 pin of the time-based integrated circuit NE555-U10 are both connected with +5V, and the anode of the diode RL 3 is connected with the other end of the relay RL1, and the end of the relay RL1 is connected with the end of the drain pump 3.
The medical staff sets the highest water level of the numerical value comparator SN74LS85-U7 through the dial switch S1, then sets the lowest water level of the numerical value comparator SN74LS85-U4 through the dial switch S2, the photoelectric coupler OPTOISO1-U3, the photoelectric coupler OPTOISO1-U5, the photoelectric coupler OPTOISO1-U8 and the photoelectric coupler OPTOISO1-U9 can detect the water level of the medical equipment, and inputs the voltage signals into the double operational amplifier LM358-U2 and the double operational amplifier LM358-U6, the double operational amplifier LM358-U2 and the double operational amplifier LM358-U6 convert the voltage signals into standard signals, the standard signals are input into the six-input inverter 74LS04-U1, the six-input inverter 74LS04-U1 performs phase inversion on the standard signals by 180 degrees to obtain a signal, the signal is input into the numerical comparator SN74LS85-U4 and the numerical comparator SN74LS85-U7, and is compared with the highest water level and the lowest water level, when the water level of the medical equipment is lower than the lowest water level, the numerical comparator SN74LS85-U4 outputs a high level, the numerical comparator SN74LS85-U7 outputs a low level, the time base integrated circuit NE555-U10 outputs a high level, the relay RL1 is attracted, the liquid pump 13 starts to work, the liquid pump 13 sucks water into the medical equipment, the light emitting diode VD2 is lightened, when the water level of the medical equipment reaches the highest water level, the numerical comparator SN74LS85-U4 outputs a low level, the numerical comparator SN74LS85-U7 outputs a high level, the time base integrated circuit NE555-U10 outputs a low level, the relay RL1 is disconnected, the liquid pump 13 is turned off, the light emitting diode VD2 is extinguished, and the light emitting diode VD1 is lightened, so that enough water is kept in the medical equipment.
The foregoing has outlined rather broadly the more detailed description of the present application, wherein specific examples have been provided to illustrate the principles and embodiments of the present application, the description of the examples being provided solely to assist in the understanding of the method of the present application and the core concepts thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims (10)

1. A water level detection circuit of medical equipment is characterized in that: the LED power supply circuit comprises a power supply circuit (1), a second group of photoelectric detection circuits (2), a first group of photoelectric detection circuits (3), a comparator circuit (4), an inverter circuit (5), a second numerical comparator circuit (6), a first numerical comparator circuit (7), a first setting switch circuit (8), a first LED indicator lamp (9), a second setting switch circuit (10), a second LED indicator lamp (11), a relay driving circuit (12), a liquid pump (13) and an MCU (micro control unit) (14), wherein the output ends of the second group of photoelectric detection circuits (2) and the first group of photoelectric detection circuits (3) are connected with the input end of the comparator circuit (4), the output end of the comparator circuit (4) and the input end of the inverter circuit (5) are connected, the input ends of the second numerical comparator circuit (6) and the first numerical comparator circuit (7) are connected with the output end of the inverter circuit (5), the input end of the first numerical comparator circuit (7) and the output end of the first setting switch circuit (8) are connected, the output end of the first numerical comparator circuit (7) and the input end of the second numerical comparator circuit (7) are connected with the input end of the second numerical comparator circuit (10), the input end of the second numerical comparator circuit (6) is connected with the second LED indicator lamp (11), the output ends of the second numerical comparator circuit (6) and the first numerical comparator circuit (7) are connected with the input end of the relay driving circuit (12), the liquid pump (13) and the MCU (14) are connected with the output end of the relay driving circuit (12), and the power supply circuit (1) is used for supplying power to the second group of photoelectric detection circuits (2), the first group of photoelectric detection circuits (3), the comparator circuit (4), the inverter circuit (5), the second numerical comparator circuit (6), the first numerical comparator circuit (7), the first setting switch circuit (8), the first LED indicator lamp (9), the second setting switch circuit (10), the second LED indicator lamp (11), the relay driving circuit (12), the liquid pump (13) and the MCU (14).
2. The medical device water level detection circuit of claim 1, wherein: the second group of photoelectric detection circuits (2) comprises photoelectric couplers OPTOISO1-U3, photoelectric couplers OPTOISO1-U5, a potentiometer VR1, a potentiometer VR2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a resistor R6, wherein the emitters of the photoelectric couplers OPTOISO1-U3 are connected in series, the emitters of the photoelectric couplers OPTOISO1-U3 are grounded, the anodes of the photoelectric couplers OPTOISO1-U3 are connected with one end of the resistor R2, the other end of the resistor R2 is connected with +5V, the resistor R1 is connected with the potentiometer VR1 in series, the other end of the resistor R1 is connected with +5V, the emitter of the photoelectric coupler OPISO 1-U5 is grounded, the cathodes of the photoelectric coupler OPISO 1-U5 are grounded, the anodes of the photoelectric coupler OPTOISO1-U5 are connected with the other end of the resistor R5, and the other end of the resistor VR4 is connected with the other end of the resistor R5 in series.
3. The medical device water level detection circuit of claim 2, wherein: the first group of photoelectric detection circuits (3) comprises photoelectric couplers OPTOISO1-U8, photoelectric couplers OPTOISO1-U9, a potentiometer VR3, a potentiometer VR4, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a resistor R13, wherein the emitters of the photoelectric couplers OPTOISO1-U8 are connected in series, the emitters of the photoelectric couplers OPTOISO1-U8 are grounded, the anodes of the photoelectric couplers OPTOISO1-U8 are connected with one end of the resistor R8, the other end of the resistor R8 is connected with +5V in series, the other end of the resistor R7 is connected with +5V, the other end of the potentiometer VR3 is grounded with the adjustable end of the potentiometer, the emitters of the photoelectric couplers OPISO 1-U9 are grounded, the cathodes of the photoelectric couplers OPISO 1-U9 are grounded, the anodes of the photoelectric couplers OPTOISO1-U9 are connected with one end of the resistor R8, the other end of the resistor R7 is connected with the other end of the resistor R11, and the other end of the resistor R11 is connected with the other end of the resistor R4 in series, and the other end of the resistor R11 is connected with the adjustable end of the resistor.
4. A medical device water level detection circuit according to claim 3, wherein: the comparator circuit (4) comprises a dual operational amplifier LM358-U2 and a dual operational amplifier LM358-U6, wherein the 4 pin of the dual operational amplifier LM358-U2 is grounded, the 8 pin of the dual operational amplifier LM358-U2 is connected with +5V, the 2 pin of the dual operational amplifier LM358-U2 is connected with a series intermediate point of a resistor R1 and a potentiometer VR1, the 3 pin of the dual operational amplifier LM358-U2 is connected with a collector of an optocoupler OPTOISO1-U3, the 4 pin of the dual operational amplifier LM358-U6 is grounded, the 8 pin of the dual operational amplifier LM358-U6 is connected with +5V, the 2 pin of the dual operational amplifier LM358-U6 is connected with a series intermediate point of the resistor R4 and the potentiometer VR2, and the 3 pin of the dual operational amplifier LM358-U6 is connected with the collector of the optocoupler OPTOISO 1-U5.
5. The medical device water level detection circuit of claim 4, wherein: the inverter circuit (5) is a six-input inverter 74LS04-U1, 7 pins of the six-input inverter 74LS04-U1 are grounded, 14 pins of the six-input inverter 74LS04-U1 are connected with +5V, 3 pins of the six-input inverter 74LS04-U1 are connected with 7 pins of a dual operational amplifier LM358-U2, 1 pin of the six-input inverter 74LS04-U1 is connected with 1 pin of the dual operational amplifier LM358-U2, 5 pins of the six-input inverter 74LS04-U1 are connected with 1 pin of the dual operational amplifier LM358-U6, and 9 pins of the six-input inverter 74LS04-U1 are connected with 7 pins of the dual operational amplifier LM 358-U6.
6. The medical device water level detection circuit of claim 5, wherein: the second numerical comparator circuit (6) is a numerical comparator SN74LS85-U4, the 2 pin, the 4 pin and the 8 pin of the numerical comparator SN74LS85-U4 are all grounded, the 3 pin and the 16 pin of the numerical comparator SN74LS85-U4 are all connected with +5V, the 10 pin of the numerical comparator SN74LS85-U4 is connected with the 2 pin of the six-input inverter 74LS04-U1, the 13 pin of the numerical comparator SN74LS85-U4 is connected with the 6 pin of the six-input inverter 74LS04-U1, and the 15 pin of the numerical comparator SN74LS85-U4 is connected with the 8 pin of the six-input inverter 74LS 04-U1.
7. The medical device water level detection circuit of claim 6, wherein: the first numerical comparator circuit (7) is a numerical comparator SN74LS85-U7, the 2 pin, the 4 pin and the 8 pin of the numerical comparator SN74LS85-U7 are all grounded, the 3 pin and the 16 pin of the numerical comparator SN74LS85-U7 are all connected with +5V, the 10 pin of the numerical comparator SN74LS85-U7 is connected with the 2 pin of the six-input inverter 74LS04-U1, the 13 pin of the numerical comparator SN74LS85-U7 is connected with the 6 pin of the six-input inverter 74LS04-U1, and the 15 pin of the numerical comparator SN74LS85-U7 is connected with the 8 pin of the six-input inverter 74LS 04-U1.
8. The medical device water level detection circuit of claim 7, wherein: the first setting switch circuit (8) is a dial card switch S1, pins 9, 11, 13 and 15 of the dial card switch S1 are all connected with +5V, pins 10, 12, 14 and 16 of the dial card switch S1 are all grounded, pins 1 and 2 of the dial card switch S1 are all connected with pin 9 of a numerical comparator SN74LS85-U7, pins 3 and 4 of the dial card switch S1 are all connected with pin 11 of the numerical comparator SN74LS85-U7, pins 5 and 6 of the dial card switch S1 are all connected with pin 14 of the numerical comparator SN74LS85-U7, and pins 7 and 8 of the dial card switch S1 are all connected with pin 1 of the numerical comparator SN74LS 85-U7.
9. The medical device water level detection circuit of claim 8, wherein: the second setting switch circuit (10) is a dial card switch S2, pins 9, 11, 13 and 15 of the dial card switch S2 are all connected with +5V, pins 10, 12, 14 and 16 of the dial card switch S2 are all grounded, pins 1 and 2 of the dial card switch S2 are all connected with pin 9 of the numerical comparator SN74LS85-U7, pins 3 and 4 of the dial card switch S2 are all connected with pin 11 of the numerical comparator SN74LS85-U4, pins 5 and 6 of the dial card switch S2 are all connected with pin 14 of the numerical comparator SN74LS85-U4, and pins 7 and 8 of the dial card switch S2 are all connected with pin 1 of the numerical comparator SN74LS 85-U4.
10. The medical device water level detection circuit of claim 9, wherein: the relay driving circuit (12) comprises a time-base integrated circuit NE555-U10, a light-emitting diode VD1, a light-emitting diode VD2, a relay RL1, a diode D1, a resistor R12, a resistor R14 and a capacitor C1, wherein the 6 pin of the numerical comparator SN74LS85-U4 is connected with the 6 pin of the time-base integrated circuit NE555-U10, the 5 pin of the numerical comparator SN74LS85-U4 is connected with the 2 pin of the time-base integrated circuit NE555-U10, the 5 pin of the time-base integrated circuit NE555-U10 is connected with the capacitor C1 in series, the 6 pin of the time-base integrated circuit NE555-U10 is connected with the cathode of the light-emitting diode VD2, the anode of the light-emitting diode 2 is connected with +5V, the 2 pin of the time-base integrated circuit NE555-U10 is connected with the cathode of the light-emitting diode VD1, the 4 pin of the time-base integrated circuit NE 10 is connected with +5V, the 4 pin of the 8 pin of the time-base integrated circuit NE555-U10 is connected with the cathode of the light-emitting diode D1, and the end of the light-emitting diode is connected with the end of the relay RL1, and the end of the relay RL1 is connected with the end of the relay RL 1.
CN202320027427.5U 2023-01-06 2023-01-06 Medical equipment water level detection circuit Active CN219456779U (en)

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