CN219351701U - Switching circuit, disinfection device and medical disinfection system - Google Patents
Switching circuit, disinfection device and medical disinfection system Download PDFInfo
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- CN219351701U CN219351701U CN202223590203.XU CN202223590203U CN219351701U CN 219351701 U CN219351701 U CN 219351701U CN 202223590203 U CN202223590203 U CN 202223590203U CN 219351701 U CN219351701 U CN 219351701U
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Abstract
The application provides a startup and shutdown circuit, a disinfection device and a medical disinfection system, and relates to the technical field of startup and shutdown. The switch circuit comprises a key and an indicator light module; the switch circuit module is connected with the key and the indicator lamp module and is used for continuously outputting a high-level signal and normally operating after the key is pressed; the switch and circuit module comprises a P-channel field effect transistor Q4, and a source electrode of the P-channel field effect transistor Q4 is connected with an input end of the power supply. In the application, the P-channel field effect transistor Q4 is used for controlling the positive electrode of the power supply, so that the situation that the direct conduction of the control circuit is not controlled due to the existence of the common ground of the rear-end circuit board can be avoided, and the switching circuit has good reliability and adaptability.
Description
Technical Field
The utility model relates to the technical field of switching on and shutting down, in particular to a switching on and shutting down circuit, a sterilizing device and a medical sterilizing system.
Background
The on-off circuit is a mechanism for controlling the power supply of the electronic system to be turned on and off, and is a vital part of the electronic system. The cut-off switch or the ship-shaped switch adopted by most application scenes is used for forcedly powering off equipment to realize shutdown, and the forced power off of the operation mode is easy to cause data loss when the system operates at high speed and transmits data.
The on-off circuit in the related art mainly utilizes a switch control circuit board and an auxiliary power supply control board for controlling the switch power supply to form an on-off control system, and the switch power supply with the auxiliary power supply control board is needed, so that the situation that the control circuit is directly conducted and not controlled due to the common ground condition of a rear-end circuit board is easy to occur, and the stability and the adaptability of the switch circuit are not limited.
Disclosure of Invention
Accordingly, the present utility model is directed to an on/off circuit, a sterilizing device and a medical sterilizing system, so as to improve the stability and adaptability of the on/off circuit.
In a first aspect, an embodiment of the present utility model provides a switching circuit, including:
a key and indicator lamp module;
the switch circuit module is connected with the key and the indicator lamp module and is used for continuously outputting a high-level signal and normally operating after the key is pressed; the switch and circuit module comprises a P-channel field effect transistor Q4, and a source electrode of the P-channel field effect transistor Q4 is connected with an input end of the power supply: the drain electrode of the P-channel field effect transistor Q4 is connected with the output end of the power supply;
the on-off control module is connected with the on-off control module and is used for continuously outputting low level and normally shutting down after informing in advance that the running program is shut down under the condition that the key is released after long pressing time t 1;
the forced shutdown circuit is connected with the startup and shutdown control module and is used for forcibly blocking the startup and shutdown control module after the control signal of the startup and shutdown control module is received and the time of pressing the key t2 for a long time, so that the system is restored to the initial shutdown state.
As an implementation manner, the device further comprises a power supply module connected with the on-off circuit module;
the first pin of the power supply module is connected with an input power supply; the second pin of the power supply module is grounded; a transient voltage suppressor D3 is connected in parallel between the first pin and the second pin.
As an implementation manner, the switching circuit module further includes: the field effect transistor Q3, the P-channel field effect transistor Q4, the resistor R7 and the resistor R8;
one ends of the first pin to the third pin of the P-channel field effect tube Q4 are connected with the source electrode of the P-channel field effect tube Q4, the other end of the P-channel field effect tube Q4 is connected with the input end of a power supply and one end of a resistor R8, the other end of the resistor R8 is connected with the grid electrode of the P-channel field effect tube Q4 through a fourth pin, and the resistor R8 is connected with one end of a resistor R7;
the drain electrode of the P-channel field effect transistor Q4 is connected with a first pin of an output port of a power supply through fifth to eighth pins, and a second pin of the output port of the power supply is grounded;
the grid electrode of the P-channel field effect tube Q4 is connected with the drain electrode of the field effect tube Q3 after being connected with the resistor R7 in series, and the grid electrode of the field effect tube Q3 is connected with the on-off control module after being connected with the resistor R1 in series;
the grid electrode of the P-channel field effect transistor Q4 is connected with the resistor R7 in series and then is also connected with the cathode of the diode D2, and the anode of the diode D2 is connected with the first pin of the key and indicator lamp module; the positive electrode of the diode D2 is also connected with the positive electrode of the diode D6, and the negative electrode of the diode D6 is connected with the resistor R6 in series and then connected with the on-off control module; a transient voltage suppressor D4 is connected between the resistor R6 and the on-off control module and then grounded;
and a resistor R4, a lamp and a power supply are also connected between the cathode of the diode D2 and the resistor R7.
As an implementation manner, the forced shutdown circuit includes:
the grid electrode of the field effect tube Q1 is connected with the resistor R11 in series and then connected with a power supply; the drain electrode of the field effect transistor Q1 is connected with a resistor R10 in series; the source electrode of the field effect transistor Q1 is connected with the key, the indicator light module and the on-off circuit module; a resistor R12 is connected in parallel between the field effect transistor Q1 and the resistor R11;
the grid electrode of the field effect tube Q2 is connected with the resistor R10 in series; the source electrode of the field effect transistor Q2 is connected with a power supply; the drain electrode of the field effect transistor Q2 is connected with the resistor R7 and the resistor R8; a resistor R9 is connected in parallel between the field effect transistor Q2 and the resistor R10;
a capacitor C3 connected in parallel with the resistor R12;
and a capacitor C4 connected in parallel with the resistor R9.
As an implementation manner, the key is connected with the first pin and the second pin of the indicator light module; the third pin and the fourth pin are connected with a switch indicator lamp, the first pin of the key and indicator lamp module is also connected with the positive electrode of a two-way parallel diode, and the negative electrode of a diode D2 in the two-way parallel diode is connected with a resistor R4 and a resistor R7; the cathode of the other diode is connected with the transient voltage suppressor D4 and then grounded, the second pin and the fourth pin of the key and the indicator light module are respectively grounded, and the third pin of the key and the indicator light module is connected with the resistor R3 in series and then connected with the output end of the power supply.
As an implementation manner, the first pin of the on-off control module is connected with the resistor R1 in series and then connected with the gate of the field effect transistor Q3; the second pin of the on-off control module is grounded; the on-off control module is connected with the resistor R6 and the transient voltage suppressor D4;
and a transient voltage suppressor D5 is connected between the first pin of the on-off control module and the resistor R1 and then grounded.
As an implementation manner, the switching circuit module further includes:
the filter circuit comprises a capacitor C1, a capacitor C2 and a diode D1, wherein the capacitor C1, the capacitor C2 and the diode D1 are connected in parallel between the drain electrode of the P-channel field effect transistor Q4 and the first pin of the power output port, and the second pin of the power output port is grounded.
In a second aspect, an embodiment of the present utility model provides a disinfection apparatus, including an on/off circuit as described above, where a power output port of the on/off circuit module is connected to a disinfection mechanism, and the on/off circuit module is controlled by the on/off control module to switch the disinfection mechanism between an on state and an off state.
As an implementation manner, the disinfection mechanism is an ultraviolet disinfection mechanism.
In a third aspect, an embodiment of the present utility model provides a medical disinfection system, including a disinfection apparatus as described above.
The embodiment of the application provides a startup and shutdown circuit, a disinfection device and a medical disinfection system, wherein the startup and shutdown circuit comprises a key and an indicator light module; the shutdown circuit module is connected with the key and the indicator lamp module and is used for continuously outputting a high-level signal and normally operating after the key is pressed; the switch and circuit module comprises a P-channel field effect transistor Q4, and a source electrode of the P-channel field effect transistor Q4 is connected with an input end of the power supply: the drain electrode of the P-channel field effect transistor Q4 is connected with the output end of the power supply; the on-off control module is connected with the on-off control module and is used for continuously outputting low level and normally shutting down after informing the running closing program in advance under the condition that the key is triggered again; the forced shutdown circuit is connected with the startup and shutdown control module and is used for forcibly blocking the startup and shutdown control module after receiving the control signal of the startup and shutdown control module and pressing the key for a long time so as to restore the system to the initial shutdown state.
In the application, the P-channel field effect transistor Q4 is used for controlling the positive electrode of the power supply, so that the situation that the direct conduction of the control circuit is not controlled due to the existence of the common ground of the rear-end circuit board can be avoided, and the switching circuit has good reliability and adaptability.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of an on/off state according to an embodiment of the present utility model.
Icon: the device comprises a 1-key and indicator lamp module, a 2-switching on/off circuit module, a 3-switching on/off control module, a 4-forced shutdown circuit and a 5-power supply module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order to facilitate understanding of the present embodiment, the following describes embodiments of the present utility model in detail.
Example 1
Referring to fig. 1, an embodiment of the present application provides a switching circuit, which includes a key and indicator light module 1, a switching circuit module 2, a switching control module 3, and a forced shutdown circuit 4.
The on-off circuit module 2 is connected with the key and the indicator light module 1 and is used for continuously outputting a high-level signal and operating normally after the key is pressed. The switching circuit module 2 comprises a P-channel field effect transistor Q4, wherein the source electrode of the P-channel field effect transistor Q4 is connected with the input end of a power supply (the input voltage of the input end of the power supply is 24V in combination with the illustration of FIG. 1); the drain electrode of the P-channel field effect transistor Q4 is connected with the output end of the power supply.
The on-off control module 3 is connected with the on-off circuit module 2 and is used for continuously outputting low level and normally shutting off after informing the shut-off running program in advance under the condition that the key is released after being pressed for a long time t 1. In the embodiment of the present application, t1 has a value of 3s.
The on-off control module is connected with the on-off circuit module and is used for continuously outputting low level and normally shutting down after the time is set to the program which is informed to shut down in advance when a timing shutdown key on the display screen interface of the upper computer is triggered;
the forced shutdown circuit 4 is connected with the startup and shutdown control module 3, and is used for forcedly blocking the startup and shutdown control module 2 to restore the system to the initial shutdown state after the control signal of the startup and shutdown control module 3 is received and the key t2 is pressed for a long time. In the embodiment of the application, the value of t2 is 6s.
In the embodiment of the application, the P-channel field effect transistor Q4 is used for controlling the positive electrode of the power supply, so that the situation that the control circuit is directly conducted and not controlled due to the existence of the common ground of the rear-end circuit board can be avoided, and the switching circuit has good reliability.
As an implementation manner, the power on/off circuit provided in the embodiment of the present application further includes a power supply module 5, where the power supply module 5 is connected to the power on/off circuit module 2.
Referring to fig. 1, a first pin of the power supply module 5 is connected to an input terminal of a power supply; the second pin of the power supply module 5 is grounded; a transient voltage suppressor D3 is connected in parallel between the first pin and the second pin.
In this way, the transient voltage suppressor D3 is in a cut-off state (high-resistance state) when the circuit works normally, and the normal work of the circuit is not affected; when the circuit has abnormal overvoltage and reaches the breakdown voltage of the transient voltage suppressor D3, the transient voltage suppressor D3 is quickly changed from a high-resistance state to a low-resistance state, the instantaneous overcurrent caused by the abnormal overvoltage is discharged to the ground, and the abnormal overvoltage is clamped at a lower level, so that the circuit at the later stage is protected from being damaged by the abnormal overvoltage. When the abnormal overvoltage disappears, the resistance of the transient voltage suppressor D3 is restored to the high resistance state. The reliability of the switching circuit can be improved by resisting the interference of static electricity, leakage and the like of corresponding grades, so that the switching circuit has better electromagnetic compatibility and adaptability.
As an implementation manner, the switching circuit module 2 further includes: the field effect transistor Q3, the P-channel field effect transistor Q4, the resistor R7 and the resistor R8.
Referring to fig. 1, one ends of the first to third pins of the P-channel field effect transistor Q4 are connected to the source (S-pole) of the P-channel field effect transistor Q4, the other end is connected to the input end of the power supply and one end of the resistor R8, the other end of the resistor R8 is connected to the gate (G-pole) of the P-channel field effect transistor Q4 through the fourth pin, and the resistor R8 is connected to one end of the resistor R7; r7=r8=10kΩ in the present embodiment.
Referring to fig. 1, the drain electrode (D-pole) of the P-channel field effect transistor Q4 is connected to the first pin of the output port of the power supply through fifth to eighth pins, and the second pin of the output port of the power supply is grounded;
the grid electrode (G electrode) of the P channel field effect tube Q4 is connected with the drain electrode of the field effect tube Q3 after being connected with the resistor R7 in series, and the grid electrode of the field effect tube Q3 is connected with the on-off control module 3 after being connected with the resistor R1 in series;
the grid electrode (G electrode) of the P channel field effect tube Q4 is connected with the resistor R7 in series and then is also connected with the cathode of the diode D2, and the anode of the diode D2 is connected with the first pin of the key and indicator lamp module 1; the positive electrode of the diode D2 is also connected with the positive electrode of the diode D6, and the negative electrode of the diode D6 is connected with the resistor R6 in series and then connected with the on-off control module 3; a transient voltage suppressor D4 is connected between the resistor R6 and the on-off control module 3 and then grounded;
a resistor R4, a lamp and a power supply are also connected between the cathode of the diode D2 and the resistor R7. In this embodiment, r4=4.7kΩ.
Similarly, the transient voltage suppressor D4 is in a cut-off state (high-resistance state) when the circuit works normally, so that the normal work of the circuit is not affected; when the circuit has abnormal overvoltage and reaches the breakdown voltage of the transient voltage suppressor D3, the transient voltage suppressor D4 rapidly changes from a high-resistance state to a low-resistance state, the instantaneous overcurrent caused by the abnormal overvoltage is discharged to the ground, and the abnormal overvoltage is clamped at a lower level, so that the circuit at the later stage is protected from being damaged by the abnormal overvoltage. When the abnormal overvoltage disappears, the resistance of the transient voltage suppressor D4 is restored to the high resistance state. The reliability of the switching circuit can be improved by resisting the interference of static electricity, leakage and the like of corresponding grades, so that the switching circuit has better electromagnetic compatibility and adaptability.
In the shutdown state, the resistor R7 and the resistor R8 do not form a loop to GND, the voltage at two ends of the resistor R8 is 24V, namely the VGS voltage of the P-channel field effect transistor Q4 is 0, the P-channel field effect transistor Q4 is not conducted, and the resistor R8 plays a role in preventing the P-channel field effect transistor Q4 from being triggered by mistake.
When the key switch is pressed, the key is connected with the pin 1 and the pin 2 of the indicator light module 1 (J4 in fig. 1), and the power supply (24V) is connected to GND through the resistor R8, the resistor R7 and the diode D2 to form a loop. The resistor R7 and the resistor R8 form partial voltage, VGS voltage of the P-channel field effect transistor Q4 is about 12V, the drain electrode (D pole) and the source electrode (source electrode) of the P-channel field effect transistor Q4 are conducted, and a power output port (combined with J2 in the figure) outputs 24V to supply power to all modules in the instrument.
In the embodiment of the application, the voltage division of the resistor R7 and the resistor R8 has the following functions:
1. the conduction of the P-channel field effect transistor Q4 is ensured, the internal resistance is minimized, and the heating is reduced;
2. the voltage of VGS of the P-channel field effect transistor Q4 is limited to be too high, and the voltage is controlled on the electric requirement of a P-channel field effect transistor Q4 chip manual, so that the chip is prevented from being damaged.
The output port (J2 in fig. 1) of the power supply outputs 24V to supply power to each module in the device, wherein the on-off control module 3 outputs high level to Sout1 immediately after being powered on, the VGS voltage of the field effect transistor Q3 is about 3.08V after being divided by the resistor R1 and the resistor R2, the drain electrode (D pole) and the source electrode (source electrode) of the field effect transistor Q3 are conducted, so that the connection point of the resistor R4 and the resistor R7 is connected to GND,24V is connected to GND through the resistor R8, the resistor R7 and the field effect transistor Q3, the drain electrode (D pole) and the source electrode (source electrode) of the field effect transistor Q3 are conducted, and the on-off is realized without depending on the key switch of the key and the indicator lamp module 1 (J4 in fig. 1). As shown in fig. 1, the input voltage (24V) is connected to GND via a lamp (LED 1 in fig. 1), a resistor R4, and a field effect transistor Q3, so as to realize an indication of on/off of the circuit board.
As an implementation manner, the forced shutdown circuit 4 includes: a field effect transistor Q1, a field effect transistor Q2, a capacitor C3 and a capacitor C4.
The grid electrode of the field effect transistor Q1 is connected with a resistor R11 in series and then connected with a power supply; the drain electrode is connected with a resistor R10 in series; the source electrode is connected with the key, the indicator light module 1 and the on-off circuit module 2; a resistor R12 is connected in parallel between the field effect transistor Q1 and the resistor R11.
The grid electrode of the field effect transistor Q2 is connected with a resistor R10 in series; the source electrode is connected with a power supply; the drain electrode is connected with the resistor R7 and the resistor R8; a resistor R9 is connected in parallel between the field effect transistor Q2 and the resistor R10.
The capacitor C3 is connected in parallel with the resistor R12.
The capacitor C4 is connected in parallel with the resistor R9.
As an implementation manner, the key is connected with the first pin and the second pin of the indicator light module 1; the third pin and the fourth pin are connected with a switch indicator lamp, the first pin of the key and indicator lamp module 1 is also connected with the positive electrode of a two-way parallel diode D2, the negative electrode of one diode is connected with the rear of the transient voltage suppressor D4 and is grounded, and the negative electrode of the diode is also connected with the on-off control module 3. The cathode of the other diode D2 is connected to the resistor R4 and the resistor R7.
The second pin and the fourth pin of the button and the indicator light module 1 are respectively grounded, and the third pin of the button and the indicator light module 1 is connected with the output end of the power supply after being connected with the resistor R3 in series.
As an implementation manner, the first pin of the on-off control module 3 is connected with the resistor R1 in series and then connected with the gate of the field effect transistor Q3; the second pin of the on-off control module 3 is grounded;
a transient voltage suppressor D5 is connected between the first pin of the on-off control module 3 and the resistor R1 and then grounded.
The switch and the circuit provided by the embodiment of the application can realize three functions of soft shutdown, hard shutdown and forced shutdown.
The soft shutdown is realized by setting shutdown time on upper computer software, clicking a shutdown button, closing and saving system files and data of an application program running in a system when the set time arrives, then sending a command to a startup and shutdown control module 3, outputting a low level Sout1 after the startup and shutdown control module 3 receives the shutdown command, wherein VGS voltage of a field effect tube Q3 is 0V, a drain electrode (D pole) and a source electrode (S pole) of the field effect tube Q3 are not conducted, a loop to GND is not formed by a resistor R7 and a resistor R8, the voltage of VGS of a P channel field effect tube Q4 is 0V, and 24V-free output is realized on a drain electrode (D pole) and a source electrode (S pole) non-conducting power output port (J2) of the P channel field effect tube Q4. The soft shutdown can save the system files and data before shutdown, reduce the damage to system hardware, and realize timing shutdown.
When the software of the upper computer is abnormal or blocked and can not realize soft shutdown, the shutdown can be realized through the hard shutdown function.
The hard shutdown is realized by long key t pressing time, in this embodiment, time t is 3 seconds, outputting a level to Sin1 (as shown in fig. 1), and loosening after the on-off control module 3 detects that Sin1 is a low level signal and maintains t time, the on-off control module 3 outputs Sout1 as a low level, and the drains (D poles) and sources (S poles) of the field effect transistor Q3 and the P-channel field effect transistor Q4 are not conducted.
When the upper computer software is abnormal or is blocked, soft shutdown cannot be realized, and meanwhile, when the startup and shutdown control module 3 is abnormal, shutdown can be realized through a forced shutdown function.
The forced shutdown is realized by pressing the key t2 for a long time (t 2 is greater than t1, and t2 is 6 seconds in the embodiment). When the key is pressed, the node (TOL in the figure) connected with the key and the indicator light module 1 is pulled down to GND, and the power supply charges the capacitor C3 through the resistor R11.
When the charging reaches a certain voltage, the drain electrode (D pole) and the source electrode (S pole) of the field effect transistor Q1 are conducted after VGS of the field effect transistor Q1 is larger than a threshold value, the capacitor C4 is charged by a power supply through a resistor R10 after DS of the field effect transistor Q1 is conducted, when the drain electrode (D pole) and the source electrode (S pole) of the field effect transistor Q2 are conducted after the charging reaches the threshold value larger than VGS of the field effect transistor Q2, the grid electrode (G pole) of the P channel field effect transistor Q4 is 24V, VGS is equal to 0V, and the drain electrode (D pole) and the source electrode (S pole) of the P channel field effect transistor Q4 are not conducted, so that forced shutdown is realized.
When the key is released, the voltage of the capacitor C3 is discharged through the resistor R12, and the voltage of the capacitor C4 is turned on
The discharge is performed through the resistor R9, so that the drains (D poles) and the source 5 poles (S poles) of the field effect transistor Q1 and the field effect transistor Q2 are not conducted, and the initial state is restored.
After the power-off, the key is pressed for a short time again when the power-on is needed.
As an implementation manner, the switching circuit module further includes:
the filter circuit comprises a capacitor C1, a capacitor C2 and a diode D1, wherein the capacitor C1, the capacitor C2 and the diode D1 are connected in parallel between the drain electrode of the P-channel field effect transistor Q4 and the first pin of the power supply output port, and the second pin of the power supply output port of the diode D1 and 0 is grounded. This allows filtering operations to be performed to reduce voltage ripple versus input
Influence of the output voltage.
The second aspect of the present application provides a disinfection device, including the above switch circuit, the power output port of the switch circuit module is connected with the disinfection mechanism, and the disinfection mechanism is switched between on and off states under the control action of the switch control module 3 through the switch circuit module 2.
5 as an implementation manner, the sterilizing mechanism is an ultraviolet sterilizing mechanism.
A third aspect of the present application provides a medical disinfection system comprising a disinfection apparatus as described above.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
0 in addition, in the description of the embodiments of the present utility model, unless explicitly stated and defined otherwise,
the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be connected inside two elements
And (5) dredging. The specific meaning of the above terms in the present application 5 will be understood in a specific case by those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present utility model may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present utility model. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. A switching circuit, characterized in that it comprises:
a key and indicator lamp module;
the switch circuit module is connected with the key and the indicator lamp module and is used for continuously outputting a high-level signal and normally operating after the key is pressed; the switching circuit module comprises a P-channel field effect transistor Q4, and a source electrode of the P-channel field effect transistor Q4 is connected with an input end of a power supply: the drain electrode of the P-channel field effect transistor Q4 is connected with the output end of the power supply;
the on-off control module is connected with the on-off control module and is used for continuously outputting low level and normally shutting down after informing in advance that the running program is shut down under the condition that the key is released after long pressing time t 1;
the forced shutdown circuit is connected with the startup and shutdown control module and is used for forcibly blocking the startup and shutdown control module after the control signal of the startup and shutdown control module is received and the time of pressing the key t2 for a long time, so that the system is restored to the initial shutdown state.
2. The power on/off circuit of claim 1, further comprising a power supply module connected to the power on/off circuit module;
the first pin of the power supply module is connected with an input power supply; the second pin of the power supply module is grounded; a transient voltage suppressor D3 is connected in parallel between the first pin and the second pin.
3. The power on and off circuit of claim 1, wherein the power on and off circuit module further comprises: the field effect transistor Q3, the P-channel field effect transistor Q4, the resistor R7 and the resistor R8;
one ends of the first pin to the third pin of the P-channel field effect tube Q4 are connected with the source electrode of the P-channel field effect tube Q4, the other end of the P-channel field effect tube Q4 is connected with the input end of a power supply and one end of a resistor R8, the other end of the resistor R8 is connected with the grid electrode of the P-channel field effect tube Q4 through a fourth pin, and the resistor R8 is connected with one end of a resistor R7;
the drain electrode of the P-channel field effect transistor Q4 is connected with a first pin of an output port of a power supply through fifth to eighth pins, and a second pin of the output port of the power supply is grounded;
the grid electrode of the P-channel field effect tube Q4 is connected with the drain electrode of the field effect tube Q3 after being connected with the resistor R7 in series, and the grid electrode of the field effect tube Q3 is connected with the on-off control module after being connected with the resistor R1 in series;
the grid electrode of the P-channel field effect transistor Q4 is connected with the resistor R7 in series and then is also connected with the cathode of the diode D2, and the anode of the diode D2 is connected with the first pin of the key and indicator lamp module; the positive electrode of the diode D2 is also connected with the positive electrode of the diode D6, and the negative electrode of the diode D6 is connected with the resistor R6 in series and then connected with the on-off control module; a transient voltage suppressor D4 is connected between the resistor R6 and the on-off control module and then grounded;
and a resistor R4, a lamp and a power supply are also connected between the cathode of the diode D2 and the resistor R7.
4. A power-on-off circuit as claimed in claim 3, wherein the forced power-off circuit comprises:
the grid electrode of the field effect tube Q1 is connected with the resistor R11 in series and then connected with a power supply; the drain electrode of the field effect transistor Q1 is connected with a resistor R10 in series; the source electrode of the field effect transistor Q1 is connected with the key, the indicator light module and the on-off circuit module; a resistor R12 is connected in parallel between the field effect transistor Q1 and the resistor R11;
the grid electrode of the field effect tube Q2 is connected with the resistor R10 in series; the source electrode of the field effect transistor Q2 is connected with a power supply; the drain electrode of the field effect transistor Q2 is connected with the resistor R7 and the resistor R8; a resistor R9 is connected in parallel between the field effect transistor Q2 and the resistor R10;
a capacitor C3 connected in parallel with the resistor R12;
and a capacitor C4 connected in parallel with the resistor R9.
5. The power on/off circuit of claim 1, wherein the key is connected with the first pin and the second pin of the indicator light module; the third pin and the fourth pin are connected with a switch indicator lamp, the first pin of the key and indicator lamp module is also connected with the positive electrode of a two-way parallel diode, and the negative electrode of a diode D2 in the two-way parallel diode is connected with a resistor R4 and a resistor R7; the cathode of the other diode is connected with the transient voltage suppressor D4 and then grounded, the second pin and the fourth pin of the key and the indicator light module are respectively grounded, and the third pin of the key and the indicator light module is connected with the output end of the power supply after being connected in series with the resistor R3.
6. The on-off circuit according to claim 3, wherein a first pin of the on-off control module is connected in series with the resistor R1 and then connected with a gate of the field effect transistor Q3; the second pin of the on-off control module is grounded; the on-off control module is connected with the resistor R6 and the transient voltage suppressor D4;
and a transient voltage suppressor D5 is connected between the first pin of the on-off control module and the resistor R1 and then grounded.
7. The power on and off circuit of claim 1, wherein the power on and off circuit module further comprises:
the filter circuit comprises a capacitor C1, a capacitor C2 and a diode D1, wherein the capacitor C1, the capacitor C2 and the diode D1 are connected in parallel between the drain electrode of the P-channel field effect transistor Q4 and the first pin of the power output port, and the second pin of the power output port is grounded.
8. A disinfection device, characterized by comprising the on-off circuit as claimed in any one of claims 1-7, wherein a power output port of the on-off circuit module is connected with a disinfection mechanism, and the disinfection mechanism is switched between an on state and an off state under the control of the on-off control module through the on-off circuit module.
9. A sterilizing device according to claim 8 wherein the sterilizing means is an ultraviolet sterilizing means.
10. A medical disinfection system comprising a disinfection apparatus as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223590203.XU CN219351701U (en) | 2022-12-28 | 2022-12-28 | Switching circuit, disinfection device and medical disinfection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223590203.XU CN219351701U (en) | 2022-12-28 | 2022-12-28 | Switching circuit, disinfection device and medical disinfection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351701U true CN219351701U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223590203.XU Active CN219351701U (en) | 2022-12-28 | 2022-12-28 | Switching circuit, disinfection device and medical disinfection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351701U (en) |
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2022
- 2022-12-28 CN CN202223590203.XU patent/CN219351701U/en active Active
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