CN114566943A - Overvoltage protection system of hardware - Google Patents
Overvoltage protection system of hardware Download PDFInfo
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- CN114566943A CN114566943A CN202210166741.1A CN202210166741A CN114566943A CN 114566943 A CN114566943 A CN 114566943A CN 202210166741 A CN202210166741 A CN 202210166741A CN 114566943 A CN114566943 A CN 114566943A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of monitoring systems, in particular to an overvoltage protection system of hardware, which comprises a pressure detection module, a comparison module, a buzzing alarm module and a power supply control module, wherein the pressure detection module is used for detecting the pressure of a working medium; pressure detection module gathers pressure signal, and amplify faint pressure signal, comparison module compares the threshold voltage of gathering signal and hardware design, and output logic signal control buzzing alarm module and power control module when being greater than threshold voltage, buzzing alarm module sends buzzing alarm sound after receiving the signal and reminds that the user is in the excessive pressure state at present, still can in time indicate user or medical personnel under the condition that software became invalid, meanwhile, power control module cuts off the power supply to the pump valve of pressure treatment equipment, atmospheric pressure can be discharged from the normally open valve of pressure treatment equipment this moment, no matter whether software became invalid or not, can both guarantee not excessive pressure, and the security performance is improved.
Description
Technical Field
The invention relates to the technical field of monitoring systems, in particular to an overvoltage protection system for hardware.
Background
The pressure treatment system is characterized in that the cavity inflatable air bag is sequentially and regularly inflated, extruded and deflated through the air pump, the intermittent pneumatic pressure is applied to form the circulating pressure from the far end of the limb to the near end of the limb tissue, the pressure of the limb is released after the limb is repeatedly pressurized, the backflow of venous blood and lymph is promoted, and the formation of deep venous thrombosis is favorably prevented; pressure treatment equipment that exists on the existing market, mostly be a pressure sensor of every passageway as pressure feedback, gather the pressure value through the sensor, the signal is given the treater operation and control pump valve to fill the gassing to the gasbag after enlargiing filtering process, reach the treatment purpose, current pressure treatment equipment excessive pressure suggestion is mostly to utilize the sensor to gather the pressure value, whether excessive pressure through software numerical comparison, and then close pressure output and suggestion user, under the force factor is if strong interference, then there is the excessive pressure treatment risk after the software inefficacy when equipment.
Disclosure of Invention
The invention aims to provide a hardware overvoltage protection system, and aims to solve the problem that the existing pressure treatment equipment cannot prompt a user during overvoltage treatment after software fails.
In order to achieve the purpose, the invention provides an overvoltage protection system of hardware, which comprises a pressure detection module, a comparison module, a buzzing alarm module and a power supply control module, wherein the pressure detection module is used for detecting the pressure of the hardware; the comparison module is connected with the pressure detection module, the buzzing alarm module is connected with the comparison module, and the power supply module is connected with the comparison module.
Wherein the pressure detection module comprises a forty-fifth resistor, a forty-seventh resistor, a hundred-first capacitor, a thirteenth A power amplifier, a tenth inductor, a hundred-first capacitor, a ninety-eighth capacitor, a pressure sensor, a thirteenth B follower, a forty-eighth resistor, a forty-sixth resistor, a forty-third resistor, a forty-fourth resistor, a forty-ninth resistor, a hundred-second capacitor, a thirteenth D follower, a fifty-third resistor, a thirteenth C follower, a fifty-fifth resistor, a fifty-first resistor, a fifty-second resistor, a fifteenth D follower, a fifty-fourth resistor, a fifty-sixth resistor, and a hundred-fourth capacitor;
one end of the forty-seventh resistor is connected with the forty-fifth resistor, and the other end of the forty-seventh resistor is grounded; one end of the first one-hundred-zero capacitor is connected with the forty-fifth resistor, and the other end of the first one-hundred-zero capacitor is connected with the forty-seventh resistor; the thirteenth A power amplifier in-phase output end is connected with the first hundred-zero capacitor; the tenth inductor is connected with the anode of the thirteenth A power amplifier power supply; one end of the first hundred capacitor is connected with the tenth inductor, and the other end of the first hundred capacitor is grounded; one end of the ninety-eight capacitor is connected with the anode of the thirteenth A power amplifier power supply, and the other end of the ninety-eight capacitor is grounded; the pin 2 of the pressure sensor is connected with the output end of the thirteenth A power amplifier, and the pin 5 of the pressure sensor is connected with the reverse input end of the thirteenth A power amplifier; the thirteenth B follower in-phase output end is connected with the pressure sensor pin 1; one end of the forty-eighth resistor is connected with the reverse input end of the thirteenth B follower; one end of the forty-sixth resistor is connected with the reverse input end of the thirteenth B follower; one end of the forty-third resistor is connected with the output end of the thirteenth B follower; one end of the forty-fourth resistor is connected with the forty-third resistor; one end of the forty-ninth resistor is connected with the forty-fourth resistor, and the other end of the forty-ninth resistor is connected with the comparison module; one end of the first zero-second capacitor is connected with the forty-ninth resistor, and the other end of the first zero-second capacitor is grounded; the thirteenth D follower inverting input terminal is connected with the forty-third resistor, and the thirteenth D follower output terminal is connected with the forty-ninth inductor; one end of the fifty-third resistor is connected with the reverse input end of the thirteenth A power amplifier, and the other end of the fifty-third resistor is grounded; the thirteenth C follower in-phase output end is connected with the pressure sensor pin 3, and the reverse input end is connected with the forty-eighth resistor; one end of the fifty-th resistor is connected with the forty-eighth resistor, and the other end of the fifty-fifth resistor is connected with the output end of the thirteenth C follower; one end of the fifty-first resistor is connected with the fifty-first resistor, and the other end of the fifty-first resistor is connected with the in-phase output end of the thirteenth D follower; one end of the fifty-second resistor is connected with the fifty-first resistor; the fifteenth D follower output terminal is connected with the fifty-second resistor; one end of the fifty-fourth resistor is connected with the fifteenth D follower in-phase output end; one end of the fifty-sixth resistor is connected with the fifty-fourth resistor, and the other end of the fifty-sixth resistor is grounded; one end of the first hundred-zero-four capacitor is connected with the fifty-fourth resistor, and the other end of the first hundred-zero-four capacitor is connected with the fifty-sixth resistor.
The comparison module comprises a fifteenth B follower, a fifteenth A power amplifier, a fifteenth C follower, a potentiometer, a fifty-eighth resistor, a fifty-ninth resistor, a one-hundred-five capacitor and a sixty-first resistor;
the fifteenth B follower in-phase output end is connected with the forty-ninth resistor; the fifteenth A power amplifier reverse input end is connected with the fifteenth B follower output end; the output end of the fifteenth C follower is connected with the in-phase output end of the fifteenth A power amplifier; one end of the 5 th potentiometer is connected with the same-phase output end of the fifteenth C follower; one end of the fifty-eighth resistor is connected with the 5 th potentiometer, and the other end of the fifty-eighth resistor is connected with the fifteenth C follower in-phase output end; one end of the fifty-ninth resistor is connected with the 5 th potentiometer, and the other end of the fifty-ninth resistor is connected with the fifteenth C follower in-phase output end; one end of the first zero-five capacitor is connected with the anode of the fifteenth A power amplifier power supply, and the other end of the first zero-five capacitor is grounded; one end of the sixty-first resistor is connected with the output end of the fifteenth A power amplifier, and the other end of the sixty-first resistor is connected with the buzzing alarm module and the power control module respectively.
Wherein one end of the sixty-second resistor is connected with the sixty-first resistor; one end of the sixty-three resistor is connected with the sixty-two resistor; the base electrode of the first triode is connected with the sixty-three resistor; one end of the first zero-six capacitor is connected with the emitting electrode of the first triode, and the other end of the first zero-six capacitor is grounded; one end of the buzzer is connected with the collector of the first triode, and the other end of the buzzer is grounded.
The power control module comprises a ninety-second resistor, a ninety-first resistor, a thirty-fourth triode, an eighty-ninth resistor, a sixty-first capacitor, a sixty-sixth capacitor, a thirty-third MOS (metal oxide semiconductor) tube, a seventh inductor, a sixty-sixth capacitor, a sixty-seventh capacitor, a sixty-second capacitor, a sixty-fifth capacitor, a fifty-fourth capacitor and a ninth inductor;
one end of the ninety-second resistor is connected with the sixty-first resistor, and the other end of the ninety-second resistor is grounded; one end of the ninety first resistor is connected with the ninety second resistor, and the base of the thirty-fourth triode is connected with the ninety first resistor; one end of the eighty-ninth resistor is connected with the collector of the thirty-fourth triode; one end of the sixty-first capacitor is connected with the eighty-ninth resistor, and the other end of the sixty-first capacitor is grounded; the anode of the sixteenth capacitor is connected with the eighty-ninth resistor, and the cathode of the sixteenth capacitor is grounded; the source electrode of the thirteenth MOS tube is connected with the eighty-ninth resistor, and the grid electrode of the thirteenth MOS tube is connected with the collector electrode of the thirty-fourth triode; the drain electrode of the thirty-third MOS tube is connected with the seventh inductor; one end of the sixty-sixth capacitor is connected with the seventh inductor, and the other end of the sixty-sixth capacitor is grounded; one end of the sixty-seventh capacitor is connected with the seventh inductor, and the other end of the sixty-seventh capacitor is connected with the sixty-sixth capacitor; the anode of the sixty-second capacitor is connected with the seventh inductor, and the cathode of the sixty-second capacitor is connected with the sixty-seventh capacitor; the anode of the sixty-fifth capacitor is connected with the seventh inductor, and the cathode of the sixty-fifth capacitor is connected with the sixty-seventh capacitor; the positive electrode of the fifty-fourth capacitor is connected with the seventh inductor, and the negative electrode of the fifty-fourth capacitor is connected with the sixty-seventh capacitor; one end of the ninth inductor is connected with the drain electrode of the thirty-third MOS tube, and the other end of the ninth inductor is connected with the sixty-seventh capacitor.
According to the hardware overvoltage protection system, the pressure detection module collects pressure signals and amplifies weak pressure signals, the comparison module compares the collected signals with a threshold voltage designed by hardware and outputs logic signals to control the buzzing alarm module and the power supply control module when the collected signals are higher than the threshold voltage, the buzzing alarm module sends out buzzing alarm sound to prompt a user that the user is in an overvoltage state at present after receiving the signals, the user or medical personnel can be prompted in time under the condition that software fails, meanwhile, the power supply control module cuts off the power of a pump valve of pressure treatment equipment, air pressure can be discharged from a normally open valve of the pressure treatment equipment at the moment, no overvoltage can be guaranteed no matter whether the software fails, and safety performance is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a hardware overvoltage protection system according to the present invention.
Fig. 2 is a circuit diagram of the pressure detection module of the present invention.
Fig. 3 is a circuit diagram of a comparison module of the present invention.
Figure 4 is a circuit diagram of a buzzer alert module of the present invention.
Fig. 5 is a circuit diagram of a power control module of the present invention.
1-pressure detection module, 2-comparison module, 3-buzzing alarm module, 5-power control module, R43-forty-third resistor, R44-forty-fourth resistor, R45-forty-fifth resistor, R46-forty-sixth resistor, R47-forty-seventh resistor, R48-forty-eighth resistor, R49-forty-ninth resistor, R50-fifty-fifth resistor, R51-fifty-first resistor, R52-fifty-second resistor, R53-fifty-third resistor, R54-fifty-fourth resistor, R56-fifty-sixth resistor, R58-fifty-eighth resistor, R59-fifty-ninth resistor, R61-sixty-first resistor, R62-sixty-second resistor, R63-sixty-third resistor, R89-eighty-ninth resistor, R91-ninety-first resistor, R92-ninety second resistor, C54-fifty fourth capacitor, C60-sixty capacitor, C61-sixty first capacitor, C62-sixty second capacitor, C65-sixty fifth capacitor, C66-sixty sixth capacitor, C67-sixty seventh capacitor, C98-ninety eighth capacitor, C100-first hundred capacitor, C101-first hundred first capacitor, C102-first hundred second capacitor, C104-first hundred fourth capacitor, C105-first hundred fifth capacitor, C106-first hundred sixth capacitor, U13A-thirteenth A power amplifier, U15A-fifteenth A power amplifier, L7-seventh inductor, L9-ninth inductor, L10-tenth inductor, U14-pressure sensor, BUZZER 1-BUZZER, U13B-thirteenth B follower, U13C-thirteenth follower, U13D-thirteenth D follower, U15B-fifteenth B follower, U15C-fifteenth C follower, U15D-fifteenth D follower, R57-potentiometer, Q1-first triode, Q34-thirty-fourth triode and Q33-thirty-third MOS tube.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 5, the present invention provides a hardware overvoltage protection system: the device comprises a pressure detection module 1, a comparison module 2, a buzzing alarm module 3 and a power supply control module 4; the comparison module 2 is connected with the pressure detection module 1, the buzzing alarm module 3 is connected with the comparison module 2, and the power supply module is connected with the comparison module 2.
In this embodiment, the pressure detection module 1 collects a pressure signal and amplifies a weak pressure signal, the comparison module 2 compares the collected signal with a threshold voltage designed by hardware, and outputs a logic signal to control the buzzing alarm module 3 and the power control module 4 when the collected signal is greater than the threshold voltage, the buzzing alarm module 3 sends out a buzzing alarm sound to prompt a user that the user is currently in an overpressure state after receiving the signal, the user or medical personnel can still be prompted in time under the condition that software fails, meanwhile, the power control module 4 cuts off a power supply to a pump valve of the pressure therapy equipment, at this moment, air pressure can be discharged from a normally open valve of the pressure therapy equipment, no matter whether the software fails, no overpressure can be ensured, and safety performance is improved.
Further, the pressure detection module 1 includes a forty-fifth resistor R45, a forty-seventh resistor R47, a one-hundred-first capacitor C101, a thirteenth a power amplifier U13A, a tenth inductor L10, a first hundred capacitor C100, a ninety-eighth capacitor C98, a pressure sensor U14, a thirteenth B follower U13B, a forty-eighth resistor R48, a forty-sixth resistor R46, a forty-third resistor R43, a forty-fourth resistor R44, a forty-ninth resistor R49, a one-hundred-zero-second capacitor C102, a thirteenth D follower U13D, a fifty-third resistor R53, a thirteenth C follower U13C, a fifty-fifth resistor R50, a first resistor R51, a second resistor R52, a fifteenth D follower U15D, a fourth resistor R54, a fifty-sixth resistor R56, and a one-hundred-fourth capacitor C104;
one end of the forty-seventh resistor R47 is connected with the forty-fifth resistor R45, and the other end is grounded; one end of the first one-hundred-zero capacitor C101 is connected with the forty-fifth resistor R45, and the other end is connected with the forty-seventh resistor R47; the in-phase output end of the thirteenth A power amplifier U13A is connected with the first hundred-zero capacitor C101; the tenth inductor L10 is connected with the positive electrode of the power supply of the thirteenth A power amplifier U13A; one end of the first hundred capacitor C100 is connected to the tenth inductor L10, and the other end is grounded; one end of the ninety-eight capacitor C98 is connected with the anode of the power supply of the thirteenth A power amplifier U13A, and the other end is grounded; pin 2 of the pressure sensor U14 is connected with the output end of the thirteenth A power amplifier U13A, and pin 5 is connected with the reverse input end of the thirteenth A power amplifier U13A; the non-inverting output end of the thirteenth B follower U13B is connected with the pin 1 of the pressure sensor U14; one end of the forty-eighth resistor R48 is connected with the reverse input end of the thirteenth B follower U13B; one end of the forty-sixth resistor R46 is connected with the reverse input end of the thirteenth B follower U13B; one end of the forty-third resistor R43 is connected with the output end of the thirteenth B follower U13B; one end of the forty-fourth resistor R44 is connected with the forty-third resistor R43; the forty-ninth resistor R49 has one end connected to the forty-fourth resistor R44 and the other end connected to the comparison module 2; one end of the first zero-second capacitor C102 is connected with the forty-ninth resistor R49, and the other end is grounded; the reverse input end of the thirteenth D follower U13D is connected with the forty-third resistor R43, and the output end of the thirteenth D follower U13D is connected with the forty-ninth inductor; one end of the fifty-third resistor R53 is connected with the reverse input end of the thirteenth A power amplifier U13A, and the other end is grounded; the non-inverting output end of the thirteenth C follower U13C is connected with the pin 3 of the pressure sensor U14, and the inverting input end of the thirteenth C follower U13C is connected with the forty-eighth resistor R48; one end of the fifty-fifth resistor R50 is connected with the forty-eighth resistor R48, and the other end of the fifty-fifth resistor R50 is connected with the output end of the thirteenth C follower U13C; one end of the fifty-first resistor R51 is connected with the fifty-first resistor R50, and the other end of the fifty-first resistor R51 is connected with the non-inverting output end of the thirteenth D follower U13D; one end of the fifty-second resistor R52 is connected with the fifty-first resistor R51; the output end of the fifteenth D follower U15D is connected with the fifty-second resistor R52; one end of the fifty-fourth resistor R54 is connected with the non-inverting output end of the fifteenth D follower U15D; one end of the fifty-sixth resistor R56 is connected with the fifty-fourth resistor R54, and the other end is grounded; one end of the one hundred-zero-four capacitor C104 is connected with the fifty-fourth resistor R54, and the other end is connected with the fifty-sixth resistor R56.
In this embodiment, the pressure sensor U14 detects pressure, amplifies a weak signal collected by the pressure sensor U14, the amplitude of the amplified signal is 0-3V, and is finally output by the thirteenth D follower U13D, the signal reduces the influence on the subsequent stage by the fifteenth B follower U15B, and the amplified signal is compared with the threshold voltage set by the comparison module 2, so as to determine whether the voltage is excessive.
Further, the comparison module 2 includes a fifteenth B follower U15B, a fifteenth a power amplifier U15A, a fifteenth C follower U15C, a potentiometer R57, a fifty-eight resistor R58, a fifty-ninth resistor R59, a one-hundred-five capacitor C105, and a sixty-one resistor R61;
the non-inverting output end of the fifteenth B follower U15B is connected with the forty-ninth resistor R49; the reverse input end of the fifteenth A power amplifier U15A is connected with the output end of the fifteenth B follower U15B; the output end of the fifteenth C follower U15C is connected with the non-inverting output end of the fifteenth A power amplifier U15A; one end of the 5 th seventh potentiometer R57 is connected with the non-inverting output end of the fifteenth C follower U15C; one end of the fifty-eighth resistor R58 is connected with the 5 th potentiometer R57, and the other end of the fifty-eighth resistor R58 is connected with the non-inverting output end of the fifteenth C follower U15C; one end of the fifty-ninth resistor R59 is connected to the 5 seventh potentiometer R57, and the other end is connected to the non-inverting output end of the fifteenth C follower U15C; one end of the first zero-five capacitor C105 is connected with the anode of the power supply of the fifteenth A power amplifier U15A, and the other end of the first zero-five capacitor C is grounded; one end of the sixty-first resistor R61 is connected with the output end of the fifteenth A power amplifier U15A, and the other end of the sixty-first resistor R61 is connected with the buzzer alarm module 3 and the power control module 4 respectively.
In this embodiment, the pressure sensor U14 detects pressure, amplifies a weak signal collected by the pressure sensor U14, the amplitude of the amplified signal is 0-3V, and is finally output by the thirteenth D follower U13D, the signal reduces the influence on the subsequent stage by the fifteenth B follower U15B, a threshold voltage is set by the fifty-eighth resistor R58 and the fifty-ninth resistor R59, the influence on the subsequent stage is reduced by the fifteenth C follower U15C, the collected signal is compared with the threshold voltage designed by hardware by the fifteenth a power amplifier U15A, and a logic signal is output to directly control the buzzer alarm module 3 and the power supply control module 4.
Further, the BUZZER alarm module 3 comprises a sixty-second resistor R62, a sixty-third resistor R63, a first triode Q1, a one hundred and six capacitor C106 and a BUZZER 1;
one end of the sixty-second resistor R62 is connected with the sixty-first resistor R61; one end of the sixty-three resistor R63 is connected with the sixty-two resistor R62; the base electrode of the first triode Q1 is connected with the sixty-three resistor R63; one end of the first hundred-zero-six capacitor C106 is connected with the emitter of the first triode Q1, and the other end of the first hundred-zero-six capacitor C is grounded; one end of the BUZZER BUZZER1 is connected with the collector of the first triode Q1, and the other end of the BUZZER BUZZER1 is grounded.
In this embodiment, when the acquired signal pressure exceeds a threshold, the output end of the fifteenth B follower U15B is greater than the output end of the fifteenth C follower U15C, that is, the input end (-) of the fifteenth a power amplifier U15A is greater than the input end (+), then the output end 1 is logic low, and will turn on the first triode Q1 to drive the BUZZER1, otherwise it will not drive.
Further, the power control module 4 includes a ninety-second resistor R92, a ninety-first resistor R91, a thirty-fourth triode Q34, an eighty-ninth resistor R89, a sixty-first capacitor C61, a sixty-capacitor C60, a thirty-third MOS transistor Q33, a seventh inductor L7, a sixty-sixth capacitor C66, a sixty-seventh capacitor C67, a sixty-second capacitor C62, a sixty-fifth capacitor C65, a fifty-fourth capacitor C54, and a ninth inductor L9;
one end of the ninety-second resistor R92 is connected with the sixty-first resistor R61, and the other end is grounded; one end of the ninety first resistor R91 is connected with the ninety second resistor R92, and the base of the thirty-fourth triode Q34 is connected with the ninety first resistor R91; one end of the eighty-ninth resistor R89 is connected with the collector of the thirty-fourth triode Q34; one end of the sixty-first capacitor C61 is connected with the eighty-ninth resistor R89, and the other end of the sixty-first capacitor C61 is grounded; the anode of the sixty-fourth capacitor C60 is connected with the eighty-ninth resistor R89, and the cathode of the sixty-fourth capacitor C60 is grounded; the source electrode of the thirteenth MOS tube Q33 is connected with the eighty-ninth resistor R89, and the gate electrode of the thirteenth MOS tube Q33 is connected with the collector electrode Q34 of the thirty-fourth triode; the seventh inductor L7 is connected with the drain of the third thirteen MOS tube Q33; one end of the sixty-sixth capacitor C66 is connected with the seventh inductor L7, and the other end is grounded; the sixty-seventh capacitor C67 is connected to the seventh inductor L7 at one end and to the sixty-sixth capacitor C66 at the other end; the anode of the sixty-second capacitor C62 is connected with the seventh inductor L7, and the cathode of the sixty-second capacitor C62 is connected with the sixty-seventh capacitor C67; the anode of the sixty-fifth capacitor C65 is connected with the seventh inductor L7, and the cathode of the sixty-fifth capacitor C65 is connected with the sixty-seventh capacitor C67; the positive electrode of the fifty-fourth capacitor C54 is connected with the seventh inductor L7, and the negative electrode of the fifty-fourth capacitor C54 is connected with the sixty-seventh capacitor C67; one end of the ninth inductor L9 is connected to the drain of the thirteenth MOS transistor Q33, and the other end is connected to the sixty-seventh capacitor C67.
In this embodiment, the thirty-third MOS transistor Q33 individually controls a power supply to supply power to the pump valve of the pressure therapy device, the fifteenth a power amplifier U15A outputs a logic signal, which is inverted through the thirty-fourth transistor Q34, and then drives the thirty-third MOS transistor Q33 to control the power supply of the pump valve of the pressure therapy device through the thirteenth B follower U13B and the fifteenth B follower U15B, when the sum of the gate (4 terminal) level and the source (123 terminal) level of the thirteenth MOS transistor Q33 is equal to or less than-2 v, the fifteenth a power amplifier U15A outputs a logic low, which is inverted through the thirty-fourth transistor Q34, and then drives the thirty-third MOS transistor Q33 through the thirty-fourth transistor Q34 to amplify and increase the driving capability, i.e., the gate (4 terminal) of the thirty-third MOS transistor Q33 is logic high, which is equal to the source (123 terminal), and stopping, completely powering off the pump valve, otherwise conducting, namely the grid (4 end) of the thirty-third MOS tube Q33 is logic low, and the source (123 end) of the thirty-third MOS tube Q33 is logic high voltage difference, namely conducting when the voltage is below the tenth V, and operating in a normal mode.
According to the hardware overvoltage protection system, a power supply is independently controlled by a thirty-third MOS transistor Q33 to supply power to a pump valve of pressure treatment equipment, the pressure sensor U14 detects pressure, amplifies weak signals collected by the pressure sensor U14, the amplitude of the amplified signals is 0-3V, the amplified signals are finally output by a thirteenth D follower U13D, the influence of the signals on the rear stage is reduced by a fifteenth B follower U15B, threshold voltages are set by a fifty-eighth resistor R58 and a fifty-ninth resistor R59, the influence on the rear stage is reduced by a fifteenth C follower U15C, collected signals are compared with the threshold voltages designed by hardware by a fifteenth A power amplifier U15A, when the pressure of the collected signals exceeds the threshold values, the output end of the fifteenth B follower U15B is larger than the output end of the fifteenth C follower U15C, that is, the input (-) of the fifteenth a power amplifier U15A is greater than the input (+) thereof, and if the output 1 is logic low, the first triode Q1 is turned on to drive the BUZZER1, otherwise, the BUZZER1 is not driven; the fifteenth power amplifier U15A outputs a logic signal, which is inverted by the thirty-fourth triode Q34, and then drives the thirteenth MOS transistor Q33 to control the power supply of the pump valve of the pressure therapy device through the thirteenth follower U13B and the fifteenth follower U15B, when the level of the gate (4) of the thirteenth MOS transistor Q33 is algebraically less than the level of the source (123) and less than-2V, the power supply is turned on, the output end of the fifteenth power amplifier U15A is logic low and is inverted by the thirty-fourth triode Q34, the driving capability is increased by the thirty-fourth triode Q34 to drive the thirty-third MOS transistor Q33, that is, the gate (4) of the thirty-third MOS transistor Q33 is logic high as the source (123), the power supply is turned off, the pump valve is turned off, otherwise, that is turned on, that the gate (4) of the thirty-third MOS transistor Q33 is logic low, and the source (123) of the thirty-third MOS transistor Q33 is logic high, and is turned on, working in a normal mode; by the mode, no matter whether the software of the pressure treatment equipment fails or not, the user can be prompted during the over-pressure treatment, the pump valve power supply of the pressure treatment equipment is cut off, the over-pressure is avoided, and the safety performance is improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. An overvoltage protection system of hardware is characterized in that,
the device comprises a pressure detection module, a comparison module, a buzzing alarm module and a power supply control module; the comparison module is connected with the pressure detection module, the buzzing alarm module is connected with the comparison module, and the power supply module is connected with the comparison module.
2. A hardware overvoltage protection system according to claim 1,
the pressure detection module comprises a forty-fifth resistor, a forty-seventh resistor, a one-hundred-first capacitor, a thirteenth A power amplifier, a tenth inductor, a one-hundred capacitor, a ninety-eighth capacitor, a pressure sensor, a thirteenth B follower, a forty-eighth resistor, a forty-sixth resistor, a forty-third resistor, a forty-fourth resistor, a forty-ninth resistor, a one-hundred-second capacitor, a thirteenth D follower, a fifty-third resistor, a thirteenth C follower, a fifty-fifth resistor, a fifty-second resistor, a fifteenth D follower, a fifty-fourth resistor, a fifty-sixth resistor, and a one-hundred-zero-fourth capacitor;
one end of the forty-seventh resistor is connected with the forty-fifth resistor, and the other end of the forty-seventh resistor is grounded; one end of the first one-hundred-zero capacitor is connected with the forty-fifth resistor, and the other end of the first one-hundred-zero capacitor is connected with the forty-seventh resistor; the thirteenth A power amplifier in-phase output end is connected with the first hundred-zero capacitor; the tenth inductor is connected with the anode of the thirteenth A power amplifier power supply; one end of the first hundred capacitor is connected with the tenth inductor, and the other end of the first hundred capacitor is grounded; one end of the ninety-eight capacitor is connected with the anode of the thirteenth A power amplifier power supply, and the other end of the ninety-eight capacitor is grounded; the pressure sensor pin 2 is connected with the output end of the thirteenth A power amplifier, and the pin 5 is connected with the reverse input end of the thirteenth A power amplifier; the thirteenth B follower in-phase output end is connected with the pressure sensor pin 1; one end of the forty-eighth resistor is connected with the reverse input end of the thirteenth B follower; one end of the forty-sixth resistor is connected with the reverse input end of the thirteenth B follower; one end of the forty-third resistor is connected with the output end of the thirteenth B follower; one end of the forty-fourth resistor is connected with the forty-third resistor; one end of the forty-ninth resistor is connected with the forty-fourth resistor, and the other end of the forty-ninth resistor is connected with the comparison module; one end of the first zero-second capacitor is connected with the forty-ninth resistor, and the other end of the first zero-second capacitor is grounded; the thirteenth D follower inverting input terminal is connected with the forty-third resistor, and the thirteenth D follower output terminal is connected with the forty-ninth inductor; one end of the fifty-third resistor is connected with the reverse input end of the thirteenth A power amplifier, and the other end of the fifty-third resistor is grounded; the thirteenth C follower in-phase output end is connected with the pressure sensor pin 3, and the reverse input end is connected with the forty-eighth resistor; one end of the fifty-th resistor is connected with the forty-eighth resistor, and the other end of the fifty-fifth resistor is connected with the output end of the thirteenth C follower; one end of the fifty-first resistor is connected with the fifty-first resistor, and the other end of the fifty-first resistor is connected with the in-phase output end of the thirteenth D follower; one end of the fifty-second resistor is connected with the fifty-first resistor; the fifteenth D follower output terminal is connected with the fifty-second resistor; one end of the fifty-fourth resistor is connected with the fifteenth D follower in-phase output end; one end of the fifty-sixth resistor is connected with the fifty-fourth resistor, and the other end of the fifty-sixth resistor is grounded; one end of the first hundred-zero-four capacitor is connected with the fifty-fourth resistor, and the other end of the first hundred-zero-four capacitor is connected with the fifty-sixth resistor.
3. A hardware overvoltage protection system according to claim 2,
the comparison module comprises a fifteenth B follower, a fifteenth A power amplifier, a fifteenth C follower, a potentiometer, a fifty-eighth resistor, a fifty-ninth resistor, a one-hundred-five capacitor and a sixty-first resistor;
the fifteenth B follower in-phase output end is connected with the forty-ninth resistor; the fifteenth A power amplifier reverse input end is connected with the fifteenth B follower output end; the output end of the fifteenth C follower is connected with the in-phase output end of the fifteenth A power amplifier; one end of the 5 th potentiometer is connected with the same-phase output end of the fifteenth C follower; one end of the fifty-eighth resistor is connected with the 5 th potentiometer, and the other end of the fifty-eighth resistor is connected with the fifteenth C follower in-phase output end; one end of the fifty-ninth resistor is connected with the 5 th potentiometer, and the other end of the fifty-ninth resistor is connected with the fifteenth C follower in-phase output end; one end of the first zero-five capacitor is connected with the anode of the fifteenth A power amplifier power supply, and the other end of the first zero-five capacitor is grounded; one end of the sixty-first resistor is connected with the output end of the fifteenth A power amplifier, and the other end of the sixty-first resistor is connected with the buzzing alarm module and the power control module respectively.
4. A hardware overvoltage protection system according to claim 3,
the buzzing alarm module comprises a sixty-second resistor, a sixty-third resistor, a first triode, a one-hundred-sixth capacitor and a buzzer;
one end of the sixty-second resistor is connected with the sixty-first resistor; one end of the sixty-three resistor is connected with the sixty-two resistor; the base electrode of the first triode is connected with the sixty-three resistor; one end of the first zero-six capacitor is connected with the emitting electrode of the first triode, and the other end of the first zero-six capacitor is grounded; one end of the buzzer is connected with the collector of the first triode, and the other end of the buzzer is grounded.
5. A hardware overvoltage protection system according to claim 4,
the power control module comprises a ninety-second resistor, a ninety-first resistor, a thirty-fourth triode, an eighty-ninth resistor, a sixty-first capacitor, a sixty capacitor, a thirty-third MOS (metal oxide semiconductor) tube, a seventh inductor, a sixty-sixth capacitor, a sixty-seventh capacitor, a sixty-second capacitor, a sixty-fifth capacitor, a fifty-fourth capacitor and a ninth inductor;
one end of the ninety-second resistor is connected with the sixty-first resistor, and the other end of the ninety-second resistor is grounded; one end of the ninety first resistor is connected with the ninety second resistor, and the base of the thirty-fourth triode is connected with the ninety first resistor; one end of the eighty-ninth resistor is connected with the collector of the thirty-fourth triode; one end of the sixty-first capacitor is connected with the eighty-ninth resistor, and the other end of the sixty-first capacitor is grounded; the anode of the sixteenth capacitor is connected with the eighty-ninth resistor, and the cathode of the sixteenth capacitor is grounded; the source electrode of the thirteenth MOS tube is connected with the eighty-ninth resistor, and the grid electrode of the thirteenth MOS tube is connected with the collector electrode of the thirty-fourth triode; the drain electrode of the thirty-third MOS tube is connected with the seventh inductor; one end of the sixty-sixth capacitor is connected with the seventh inductor, and the other end of the sixty-sixth capacitor is grounded; one end of the sixty-seventh capacitor is connected with the seventh inductor, and the other end of the sixty-seventh capacitor is connected with the sixty-sixth capacitor; the anode of the sixty-second capacitor is connected with the seventh inductor, and the cathode of the sixty-second capacitor is connected with the sixty-seventh capacitor; the anode of the sixty-fifth capacitor is connected with the seventh inductor, and the cathode of the sixty-fifth capacitor is connected with the sixty-seventh capacitor; the positive electrode of the fifty-fourth capacitor is connected with the seventh inductor, and the negative electrode of the fifty-fourth capacitor is connected with the sixty-seventh capacitor; one end of the ninth inductor is connected with the drain electrode of the thirty-third MOS tube, and the other end of the ninth inductor is connected with the sixty-seventh capacitor.
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| CN202210166741.1A CN114566943A (en) | 2022-02-23 | 2022-02-23 | Overvoltage protection system of hardware |
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| CN202210166741.1A CN114566943A (en) | 2022-02-23 | 2022-02-23 | Overvoltage protection system of hardware |
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