CN111404139A - Power supply safety protection system - Google Patents
Power supply safety protection system Download PDFInfo
- Publication number
- CN111404139A CN111404139A CN202010354573.XA CN202010354573A CN111404139A CN 111404139 A CN111404139 A CN 111404139A CN 202010354573 A CN202010354573 A CN 202010354573A CN 111404139 A CN111404139 A CN 111404139A
- Authority
- CN
- China
- Prior art keywords
- power supply
- pin
- voltage
- module
- medical equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/006—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too high or too low voltage
-
- 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
- H02H3/20—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 responsive to excess voltage
- H02H3/202—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 responsive to excess voltage for dc systems
-
- 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
- H02H3/20—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 responsive to excess voltage
- H02H3/207—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 responsive to excess voltage also responsive to under-voltage
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
The invention provides a power supply safety protection system, which can solve the problem that when medical equipment is powered on and started or works normally, a power supply is abnormal, and effectively avoids the medical equipment from being damaged; a power supply safety protection system is used for protecting a power supply of medical equipment and comprises a power supply module, a voltage-stabilizing filtering module, a protection module and an output module which are electrically connected in sequence, wherein the output module is connected with a power supply input end of the medical equipment; the power supply module is used for supplying power to the power supply safety protection system; the voltage stabilizing and filtering module is used for stabilizing and filtering the voltage of the power supply flowing through; the protection module is used for cutting off the whole power supply to protect the medical equipment; and the output module is used for realizing signal output control with the medical equipment.
Description
Technical Field
The invention relates to the technical field of power protection, in particular to a power safety protection system.
Background
In the application of the existing medical equipment, when the used medical equipment is powered on and started or works normally, the voltage fluctuation is likely to be unstable due to power failure, so that the medical equipment works abnormally, and even the medical equipment is likely to be burnt out, thereby causing great harm.
Disclosure of Invention
In view of the above problems, the present invention provides a power source safety protection system, which can solve the problem that when a medical device is powered on and started up or works normally, a power source is abnormal, and effectively avoid damage to the medical device.
The technical scheme is that the power supply safety protection system is used for protecting the power supply of the medical equipment, and is characterized in that: the medical equipment power supply device comprises a power supply module, a voltage stabilizing and filtering module, a protection module and an output module which are sequentially and electrically connected, wherein the output module is connected with the power supply input end of the medical equipment;
the power supply module is used for supplying power to the power supply safety protection system;
the voltage stabilizing and filtering module is used for stabilizing and filtering the voltage of the power supply flowing through;
the protection module is used for cutting off the whole power supply to protect the medical equipment;
and the output module is used for realizing signal output control with the medical equipment.
It is further characterized in that:
the power supply module comprises a power supply CN1 and a fuse PS1, the voltage stabilizing filter module comprises a bidirectional voltage stabilizing tube D1, capacitors C1-C1, a resistor R1 and an inductor 1, the power supply CN1 adopts a model of ATX _2x2 1 _4.2mm, the inductor 1 1 adopts a model of 1G-501P 83Y 1, pins 1 and 2 of the power supply CN1 are connected with the ground, pins 3 and 4 of the power supply CN1 are connected with a pin 1 of the fuse PS1 after being connected, a pin 2 of the fuse PS1 is connected with a pin 4 of the inductor 1 1, a pin 2 of the bidirectional voltage stabilizing tube D1 and one ends of the capacitors C1 and C1 to be connected with each other, a pin 3 of the inductor 1, a pin 1 of the bidirectional voltage stabilizing tube D1, the other ends of the capacitors C1 and C1 are connected with the ground, and the other ends of the resistors C1 and the resistor R1 are connected with the ground, the other ends of the resistor 1 and the resistor R1 and the resistor 1 to be connected with the other ends of the resistor 1 and the resistor R1;
the protection module comprises voltage-stabilizing tubes D2 and D3, resistors R3-R6 and a triode Q1, wherein pins 2 of the voltage-stabilizing tubes D2 and D3 are connected and then connected with pin 1 of the inductor L1, pin 1 of the triode Q1 is connected with one ends of the resistors R3 and R5, pin 3 of the triode Q1 is connected with one ends of the resistors R4 and R6, pin 1 of the voltage-stabilizing tube D2 is connected with the other end of the resistor R3, pin 1 of the voltage-stabilizing tube D3 is connected with the other end of the resistor R4, and pin 2 of the triode Q1 is connected with the other ends of the resistors R539R 5 and R6 and then grounded;
the output module comprises MOS tubes Q2 and Q3, capacitors C5-C8, resistors R2 and R7, one end of the capacitor C5 is connected with the pin 3 of the triode Q1 and the pin 1 of the MOS tube Q2, the other end of the capacitor C5 is connected with the pin 2 of the triode Q1 and the pin 2 of the MOS tube Q2 and then grounded, the pins 1, 2 and 3 of the MOS tube Q3, the capacitor C6 and one end of the resistor R7 are connected with the pin 2 of the voltage regulator tube D3, one end of the resistor R2 is connected with the pin 3 of the MOS tube Q2, the other ends of the capacitor C6, the resistor R6 and the resistor R6 are connected with the pin 4 of the MOS tube Q6, the pins 5, 6, 7, 8 and 9 of the MOS tube Q6 are connected with one ends of the capacitors C6 and then grounded, and the other ends of the capacitors C6 and C6 are connected with the power supply + 12V.
The invention has the advantages that after the power supply safety protection system is connected with the medical equipment, when the medical equipment is powered on and started or works normally, if the power supply is abnormal, such as overvoltage or undervoltage, the power supply can be timely processed, the power supply is cut off to protect the whole medical equipment, the great harm is avoided, and the invention has better use and popularization values.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a circuit schematic of the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, the power supply safety protection system of the present invention is used for protecting a power supply of a medical device 5, and includes a power supply module 1, a voltage stabilizing filter module 2, a protection module 3, and an output module 4, which are electrically connected in sequence, wherein the output module 4 is connected with a power supply input end of the medical device 5; the power supply module 1 is used for supplying power to a power supply safety protection system; the voltage stabilizing and filtering module 2 is used for stabilizing and filtering the voltage of the power supply flowing through; a protection module 3 for cutting off the entire power supply to protect the medical device 5; and the output module 4 is used for realizing signal output control with the medical equipment 5.
The power supply module 1 comprises a power supply CN1 and a fuse PS1, the voltage stabilizing filter module 2 comprises a bidirectional voltage stabilizing tube D1, capacitors C1-C1, a resistor R1 and an inductor 1 1, the power supply CN1 adopts a model of ATX _2x2 1 _4.2mm, the inductor 1 1 adopts a loop coil inductor, the model of the inductor is 1G- 501P 83Y 1, 1 and 2 pins of the power supply CN1 are connected with the ground after being connected, 3 and 4 pins of the power supply CN1 are connected with 1 pin of the fuse PS1 after being connected, 2 pin of the fuse PS1 is connected with 4 pin of the inductor 1, 2 pin of the bidirectional voltage stabilizing tube D1, one end of the capacitors C1 and one end of the capacitor C1, the other end of the 3 pin of the inductor 1, the other end of the bidirectional voltage stabilizing tube D1 is connected with the ground, 1 pin of the inductor R1, the other end of the capacitor C1 is connected with the ground, the other end of the capacitor R1 and the other end of the capacitor C1, the other end of the inductor 1 is connected with the other end of the capacitor C1;
the protection module 3 comprises voltage-regulator tubes D2 and D3, resistors R3-R6 and a triode Q1, wherein pins 2 of the voltage-regulator tubes D2 and D3 are connected and then connected with pin 1 of an inductor L1, pin 1 of the triode Q1 is connected with one ends of the resistors R3 and R5, pin 3 of the triode Q1 is connected with one ends of the resistors R4 and R6, pin 1 of the voltage-regulator tube D2 is connected with the other end of the resistor R3, pin 1 of the voltage-regulator tube D3 is connected with the other end of the resistor R4, and pin 2 of the triode Q1 is connected with the other ends of the resistors R5 and R6 and then grounded;
the output module 4 comprises MOS tubes Q2 and Q3, capacitors C5-C8, resistors R2 and R7, one end of the capacitor C5 is connected with a pin 3 of a triode Q1 and a pin 1 of a MOS tube Q2, the other end of the capacitor C5 is connected with a pin 2 of a triode Q1 and a pin 2 of a MOS tube Q2 and then grounded, one ends of a pin 1, a pin 2 and a pin 3 of a MOS tube Q3, a pin C6 and a pin R7 of the MOS tube Q3 are connected with a pin 2 of a voltage regulator tube D3, one end of a resistor R2 is connected with a pin 3 of the MOS tube Q2, the other ends of the capacitors C6, R2 and R7 are connected with a pin 4 of the MOS tube Q3, pins 5, 6, 7, 8 and 9 of the MOS tube Q3 are connected with one ends of the capacitors C7 and C8 and then grounded, and the other ends of the capacitors C7 and C8 are connected with a power supply +.
The working principle of the invention is as follows: firstly, assuming that the input voltage + DC _ IN is 12V, setting the OVP voltage point to be 13V, and correspondingly setting the voltage value of a voltage regulator tube D2, when the input voltage + DC _ IN is more than 13V, the input voltage + DC _ IN plays a role of protection, and therefore the voltage regulator tube D2 is selected to have the voltage value of 13V; setting the UVP voltage to be 8.2V, and correspondingly setting the voltage stabilization value of a voltage stabilizing tube D3, playing a protection role when the input voltage + DC _ IN is less than 8.2V, so that the voltage stabilizing value of a voltage stabilizing tube D3 is 8.2V;
when the input voltage + DC _ IN is within the normal working voltage range of 8.2V-13V, the voltage-stabilizing tube D2 is IN a cut-off state, the voltage-stabilizing tube D3 is broken down, and voltage is divided through resistors R4 and R6, so that the grid of the MOS tube Q2 is at a high level, the MOS tube Q2 is opened, the drain of the MOS tube Q2 is pulled down, at the moment, the grid of the MOS tube Q3 is smaller than the source electrode potential, the MOS tube Q3 is opened, and the power supply +12V is normally output to the medical equipment for normal use;
when the input voltage + DC _ IN is larger than 13V, the voltage-stabilizing tube D2 is broken down, and the voltage is divided into high level through the resistors R3 and R5, so that the triode Q1 is opened, the collector of the triode Q1 is at low level, namely the grid of the MOS tube Q2 is at low level, the MOS tube Q2 is IN a closed state, the potential of the grid of the MOS tube Q3 is equal to the potential of the source, the MOS tube Q3 is IN a closed state, and the input high voltage is cut off and is not output at the moment, so that overvoltage protection is realized, and medical equipment is prevented from being burnt;
when the input voltage + DC _ IN is less than 8.2V, the voltage-stabilizing tubes D2 and D3 are both IN a cut-off state, the grid potential of the MOS tube Q3 is equal to the source potential, the MOS tube Q3 is IN a cut-off state, and the input low voltage is cut off and is not output, so that under-voltage protection is realized, and unstable work caused by under-voltage of medical equipment is avoided.
In conclusion, when the risk occurs, the power supply can be effectively cut off in time to protect the medical equipment, the equipment is prevented from being burnt or abnormal in work due to overvoltage or undervoltage, and the safety and the reliability of the operation of the medical equipment are effectively improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A power supply safety protection system is used for protecting a medical equipment power supply and is characterized in that: the medical equipment power supply device comprises a power supply module, a voltage stabilizing and filtering module, a protection module and an output module which are sequentially and electrically connected, wherein the output module is connected with the power supply input end of the medical equipment; the power supply module is used for supplying power to the power supply safety protection system; the voltage stabilizing and filtering module is used for stabilizing and filtering the voltage of the power supply flowing through; the protection module is used for cutting off the whole power supply to protect the medical equipment; and the output module is used for realizing signal output control with the medical equipment.
2. A power supply safety protection system as claimed in claim 1, wherein the power supply module includes a power supply CN1 and a fuse PS1, the voltage stabilizing filter module includes a bidirectional voltage stabilizing tube D1, capacitors C1-C1, a resistor R1 and an inductor 1 1, the power supply CN1 is ATX _2x2 1 _4.2mm in model, the inductor 1 1 is 1G-501P 83Y 1 in model, pins 1 and 2 of the power supply CN1 are grounded after being connected, pins 3 and 4 of the power supply CN1 are connected with a pin 1 of the fuse PS1 after being connected, a pin 2 of the fuse PS1 is connected with a pin 4 of the inductor 1, a pin 2 of the bidirectional voltage stabilizing tube D1, one ends of the capacitors C1 and C1 are connected, a pin 3 of the inductor 1, a pin 1 of the bidirectional voltage stabilizing tube D1, a pin 1 of the capacitor C1 and the other end of the inductor C1 are connected with a pin C1, the other end of the inductor 1 and the other end of the resistor R1 is connected with a pin 1 and the other end of the inductor 1 and the capacitor C1 are connected with the capacitor C1 and the other end of the inductor 1.
3. The power supply safety protection system according to claim 2, wherein the protection module comprises voltage-regulator tubes D2, D3, resistors R3-R6 and a triode Q1, pins 2 of the voltage-regulator tubes D2 and D3 are connected and then connected with a pin 1 of the inductor L1, a pin 1 of the triode Q1 is connected with one ends of the resistors R3 and R5, a pin 3 of the triode Q1 is connected with one ends of the resistors R4 and R6, a pin 1 of the voltage-regulator tube D2 is connected with the other end of the resistor R3, a pin 1 of the voltage-regulator tube D3 is connected with the other end of the resistor R4, and a pin 2 of the triode Q1 is connected with the other ends of the resistors R5 and R6 and then grounded.
4. A power supply safety protection system according to claim 3, wherein: the output module comprises MOS tubes Q2 and Q3, capacitors C5-C8, resistors R2 and R7, one end of the capacitor C5 is connected with the pin 3 of the triode Q1 and the pin 1 of the MOS tube Q2, the other end of the capacitor C5 is connected with the pin 2 of the triode Q1 and the pin 2 of the MOS tube Q2 and then grounded, the pins 1, 2 and 3 of the MOS tube Q3, the capacitor C6 and one end of the resistor R7 are connected with the pin 2 of the voltage regulator tube D3, one end of the resistor R2 is connected with the pin 3 of the MOS tube Q2, the other ends of the capacitor C6, the resistor R6 and the resistor R6 are connected with the pin 4 of the MOS tube Q6, the pins 5, 6, 7, 8 and 9 of the MOS tube Q6 are connected with one ends of the capacitors C6 and then grounded, and the other ends of the capacitors C6 and C6 are connected with the power supply + 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010354573.XA CN111404139A (en) | 2020-04-29 | 2020-04-29 | Power supply safety protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010354573.XA CN111404139A (en) | 2020-04-29 | 2020-04-29 | Power supply safety protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111404139A true CN111404139A (en) | 2020-07-10 |
Family
ID=71429898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010354573.XA Pending CN111404139A (en) | 2020-04-29 | 2020-04-29 | Power supply safety protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111404139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904316A (en) * | 2021-10-27 | 2022-01-07 | 江苏嘉擎信息技术有限公司 | Input power supply protection circuit for mainboard equipment |
-
2020
- 2020-04-29 CN CN202010354573.XA patent/CN111404139A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904316A (en) * | 2021-10-27 | 2022-01-07 | 江苏嘉擎信息技术有限公司 | Input power supply protection circuit for mainboard equipment |
| CN113904316B (en) * | 2021-10-27 | 2023-11-21 | 江苏嘉擎信息技术有限公司 | Input power supply protection circuit for main board equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105068636A (en) | Anti-shock surge circuit applied to ruggedized computer | |
| CN105027375A (en) | Alternator overvoltage protection circuit | |
| CN114172114A (en) | Module power output protection circuit | |
| CN111404139A (en) | Power supply safety protection system | |
| CN104035538B (en) | Mainboard protection circuit | |
| CN103956721A (en) | Battery explosion-proof circuit and battery charging circuit | |
| CN111313365A (en) | Overvoltage protection circuit, overvoltage protection method and display device | |
| WO2023004952A1 (en) | Vehicle-mounted power supply circuit, and vehicle | |
| CN209767151U (en) | vehicle-mounted pavement quality sensing equipment | |
| CN211790756U (en) | Power supply safety protection system | |
| CN102882181B (en) | Reverse protection and overvoltage protection circuit based on bidirectional silicon-controlled thyristor | |
| CN203826946U (en) | Cell explosionproof circuit and cell charging circuit | |
| CN111049101A (en) | Overvoltage protection circuit | |
| CN212969138U (en) | Device for simulating rechargeable battery characteristics by using capacitor | |
| CN109066636A (en) | A kind of circuit of Anti-surging | |
| CN218183248U (en) | Direct current power supply voltage reduction circuit, power supply circuit and motor controller | |
| CN207896665U (en) | Meet storage battery power supply voltage instability and protects the protective device of LCD screen | |
| CN207265653U (en) | Protection circuit for system cut-off | |
| CN110492434A (en) | A kind of under-voltage protecting circuit that brief and practical can restore automatically | |
| CN216774288U (en) | Input power supply detection protection circuit and terminal equipment | |
| CN216598996U (en) | Direct current power supply with overvoltage surge and input surge current limiting capability | |
| CN110311355A (en) | System, method and the server power supply of overvoltage protection are carried out to server power supply | |
| CN215580340U (en) | Overvoltage protection circuit | |
| CN217522573U (en) | Overvoltage protection circuit structure and electrical equipment | |
| CN217388218U (en) | Power supply protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |