CN210380366U - Medical equipment and control module thereof - Google Patents
Medical equipment and control module thereof Download PDFInfo
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- CN210380366U CN210380366U CN201921220553.2U CN201921220553U CN210380366U CN 210380366 U CN210380366 U CN 210380366U CN 201921220553 U CN201921220553 U CN 201921220553U CN 210380366 U CN210380366 U CN 210380366U
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Abstract
The utility model discloses a medical equipment and control module group thereof, this control module group includes medical equipment's main control unit and power failure alarm circuit, power failure alarm circuit has alarm control unit and alarm unit, alarm control unit receives the level signal of first power supply terminal and second power supply terminal, alarm unit receives the control signal of alarm control unit output, wherein, power failure alarm circuit still is provided with the energy storage unit, the energy storage unit has energy storage component, energy storage component receives the electric energy through first power supply terminal or second power supply terminal, and energy storage unit supplies power to alarm control unit and alarm unit; the main control unit is electrically isolated from the alarm control unit. The medical equipment is provided with a power unit, a driving unit and the control module. The utility model discloses a power failure alarm circuit's the control unit and medical equipment's the main control unit mutual independence, still can send alarm signal under the condition that main control unit loses the electricity.
Description
Technical Field
The utility model relates to a medical equipment field especially relates to a medical equipment and control module group that this kind of medical equipment used with power failure alarm circuit.
Background
An infusion device is a commonly used medical device, and an existing infusion device generally includes a delivery unit, a driving unit, a main control unit, an alarm device, and a power unit, wherein the power unit is used for supplying power to each electrical element of the infusion device, and the existing power unit mainly includes an external power source and an internal power source. The external power source is usually supplied by ac power, for example, 220 v ac power is received, and the internal power source is supplied by dc power, for example, a storage battery is used.
Because of the particularity of the medical equipment, once the power supply is interrupted, danger is easily brought to a patient, and therefore, in order to avoid the situation that the medical equipment cannot work due to the interruption of the external alternating current power supply used by the medical equipment, a storage battery is arranged inside the existing infusion equipment and is used as an internal power supply. Moreover, once the external power supply or the internal power supply fails, most infusion devices send out a power failure alarm signal to prompt medical staff in time.
However, the power failure alarm module and the main control unit used in the existing infusion equipment use the same control unit and alarm system, and when both the external power supply and the internal power supply fail, the main control system and the alarm system cannot be effectively powered, cannot send out alarm signals, and have certain potential safety hazards.
Disclosure of Invention
A first object of the utility model is to provide a can effectively avoid unable medical equipment's that sends power failure alarm signal control module group.
The second objective of the present invention is to provide a medical device using the above control module.
In order to achieve the first purpose, the utility model provides a medical equipment's control module group includes medical equipment's main control unit and power failure alarm circuit, power failure alarm circuit has alarm control unit and alarm unit, alarm control unit receives the level signal of first power supply terminal and second power supply terminal, alarm unit receives the control signal of alarm control unit output, wherein, power failure alarm circuit still is provided with the energy storage unit, the energy storage unit has energy storage element, the energy storage element receives the electric energy through first power supply terminal or second power supply terminal, and the energy storage unit supplies power to alarm control unit and alarm unit; the main control unit is electrically isolated from the alarm control unit.
According to the scheme, the alarm control unit and the alarm unit of the power failure alarm circuit are independently powered by the energy storage unit, and the main control unit of the medical equipment is electrically isolated from the alarm control unit, namely the main control unit and the alarm control unit work independently, so that the work of the alarm control unit is not influenced by the main control unit. Therefore, once the external unit and the internal power supply both have faults, even if the main control unit of the medical equipment loses power, the alarm control unit is still powered by the energy storage unit, so that the alarm unit is ensured to send out an alarm signal, and the condition that a power failure alarm circuit cannot work when the internal and external power supplies of the medical equipment both have faults is avoided.
Preferably, the energy storage unit further includes a switching circuit, the switching circuit includes a first switching element and a second switching element, a control terminal of the first switching element receives a level signal of the first power supply terminal and a power switching signal of the medical device, one current terminal of the first switching element is electrically connected to a control terminal of the second switching element, and one current terminal of the second switching element is connected to the second power supply terminal.
Therefore, level signals of the external power supply and the internal power supply are obtained through the switch circuit, the on-off of the switch circuit is selected according to the level signals, then a proper power supply is selected to charge the energy storage element, the external power supply is preferably used for supplying power to the energy storage element, the internal power supply is used for supplying power under the condition that the external power supply is disconnected, and therefore the energy storage element is ensured to obtain sufficient electric energy.
The energy storage unit further comprises a charging control circuit, wherein the charging control circuit receives the signal output by the switch circuit and controls the energy storage element to be charged according to the signal output by the switch circuit.
It can be seen that the charging voltage can be stabilized by the charging control circuit, and the reverse flow of the charging current is avoided.
In a further aspect, the energy storage unit further includes a charging current limiting circuit, and the charging current limiting circuit is connected between the charging control circuit and the energy storage element. Therefore, the situation that the energy storage element is overcharged due to overlarge charging current can be avoided, and the service life of the energy storage element is effectively prolonged.
In a further scheme, the energy storage unit further comprises an overcurrent protection circuit, and the overcurrent protection circuit is connected between the switch circuit and the charging control circuit.
Therefore, once the charging current is too large, the overcurrent protection circuit is started, for example, a fuse serving as an overcurrent protection element is fused, so that the excessive current is prevented from flowing to the energy storage element, and the energy storage element is prevented from being damaged.
In a further aspect, the first switching element is a transistor and the second switching element is a field effect transistor. Because the triode and the field effect transistor are the most common switching elements, the switching elements are low in price and stable in performance, the production cost of the medical equipment is reduced, and meanwhile, the working stability of the power failure alarm circuit can be ensured.
In a further aspect, the alarm control unit includes a third switching element, and a control terminal of the third switching element receives level signals of the first power supply terminal and the second power supply terminal. Therefore, the third switch element sends a control signal to the chip of the alarm control unit, and the chip of the alarm control unit can be effectively controlled.
Preferably, the alarm unit further comprises a buzzer for receiving the signal output by the alarm frequency generating circuit.
Therefore, the alarm frequency generation circuit works immediately after receiving the signal output by the third switching element and generates a signal with corresponding frequency to the alarm unit, for example, the signal is sent to the buzzer, so that the buzzer is driven to work. Such a circuit structure is very simple and can reduce the production cost of the medical device.
In order to achieve the second objective, the present invention provides a medical device, which comprises a driving unit and a power unit for supplying power to the driving unit, wherein the medical device further comprises the above control module, and the power unit is connected to the first power terminal and the second power terminal.
Drawings
Fig. 1 is a block diagram of a medical device according to an embodiment of the present invention.
Fig. 2 is an electrical schematic block diagram of a power failure alarm circuit in an embodiment of the control module of the present invention.
Fig. 3 is a circuit diagram of a power failure alarm circuit in an embodiment of the control module of the present invention.
Fig. 4 is a circuit diagram of an alarm control unit in an embodiment of the control module of the present invention.
Fig. 5 is a circuit diagram of an alarm unit in an embodiment of the control module of the present invention.
Fig. 6 is a partial circuit diagram of an energy storage unit in an embodiment of the control module of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
The utility model discloses a medical equipment can be infusion equipment, also can be other equipment that will use the power, and is preferred, and medical equipment can use the external power supply, for example use 220V's commercial power supply, also can use the internal power supply, for example the inside battery that sets up of medical equipment, when external power supply breaks down, can switch over to at once to being supplied power by internal power supply to avoid leading to the unable condition of using of medical equipment to take place because of external power supply breaks down.
Referring to fig. 1, the medical device of the present embodiment is an infusion device that includes a power unit 11, a drive unit 12, a delivery unit 13, a main control unit 14, and a power failure alarm circuit 15. The power unit 11 includes a power conversion module for converting an external power source into a suitable low-voltage direct current, and an internal power source. Preferably, the power conversion module includes a rectification circuit, a voltage stabilizing circuit, a filter circuit, etc. for converting the 220 v commercial power into a suitable low-voltage direct current. The power conversion module may be formed by a conventional rectifier circuit, a voltage regulator circuit, and a filter circuit, which are not described herein again.
The power unit 11 supplies power to the driving unit 12, the driving unit 12 of this embodiment may include a motor, a peristaltic pump, and the like, the delivery unit 13 is used to push the syringe to work or achieve delivery of liquid, and the delivery unit 13 is driven by the driving unit 12 to work. The main control unit 14 is a core control device of the medical device, and the main control unit 14 may include a chip with arithmetic capability, such as a single chip microcomputer.
In order to send out an alarm signal in time under the condition that both the external power supply and the internal power supply have faults, an independent power failure alarm circuit 15 is arranged in the embodiment, the power failure alarm circuit 15 comprises an energy storage unit, an alarm control unit and an alarm unit, the energy storage unit supplies power to the alarm control unit and the alarm unit, and the energy storage unit is charged by the external power supply or the internal power supply, so that when both the external power supply and the internal power supply have faults, the energy storage unit can still supply power to the alarm control unit and the alarm unit.
Referring to fig. 2, the energy storage unit includes a switching circuit 23, an overcurrent protection circuit 24, a charge control circuit 25, a charge current limiting circuit 26, and an energy storage element 27, the alarm control unit includes an alarm condition detection circuit 28, and the alarm unit includes an alarm frequency generation circuit 29 and a buzzer 30. The external power supply is a switching power supply 21, the internal power supply is a battery 22, the switching power supply 21 and the battery 22 can output current to an overcurrent protection circuit 24 through a switching circuit 23, and the current is output to an energy storage element 27 through a charging control circuit 25 and a charging current limiting circuit 26, so that the energy storage element 27 is charged. Preferably, the energy storage element 27 of the present embodiment is a super capacitor, and the energy storage element 27 supplies power to the alarm condition detection circuit 28 and the alarm frequency generation circuit 29.
Thus, the alarm control unit and the main control unit of the medical equipment are independent from each other, namely the main control unit of the medical equipment is electrically isolated from the alarm condition detection circuit 28 of the power failure alarm circuit, the alarm control unit is not controlled by the main control unit, even if the main control unit loses power, the work of the alarm control unit is not influenced, and the problem that an alarm signal cannot be sent out when the internal power supply and the external power supply cannot supply power can be avoided.
Referring to fig. 3 and 4, the alarm condition detection circuit of the present embodiment includes a diode D12, a diode D24, a resistor R129, a resistor R43, and a transistor Q8, wherein the transistor Q8 is used as a third switching element of the present embodiment, a base thereof is used as a control terminal and is connected to the resistor R129, an emitter thereof is grounded, and a collector thereof is connected to one end of the resistor R43, in the present embodiment, an emitter and a collector of the transistor Q8 are two current terminals. The other end of the resistor R43 is connected to a dc voltage source C, which is a voltage source provided by the energy storage element in this embodiment.
The anode of the diode D12 is connected to a first power supply terminal P, which is a power supply terminal connected to an external power supply in this embodiment, and the cathode of the diode D12 is connected to the resistor R129. The anode of the diode D24 is connected to the second power supply terminal B, which is a power supply terminal connected to an internal power supply in this embodiment, and the cathode of the diode D24 is connected to the resistor R129.
When the internal power supply and the external power supply of the medical equipment do not simultaneously have faults, the level of the voltage terminal P or the level of the voltage terminal B are both high level signals, at least one of the diodes D12 and D24 is conducted, the triode Q8 is conducted, and the collector is a low level signal. When the internal power supply and the external power supply of the medical equipment simultaneously fail, the levels of the voltage terminal P and the voltage terminal B are both low level signals, the diodes D12 and D24 are both cut off, the transistor Q8 is cut off, and the collector is a high level signal.
Referring to fig. 5, the alarm frequency generating circuit of the alarm unit includes an NE555 chip U23, and a collector of a transistor Q8 is connected to a pin 4 of a chip U23, so that the pin 4 of the chip 23 receives a low level signal when the internal power supply and the external power supply do not simultaneously fail, and the pin 4 of the chip 23 receives a high level signal when the internal power supply and the external power supply simultaneously fail.
The alarm unit further comprises a buzzer LS2 connected to the chip 23, and the buzzer LS2 is not driven to work when the pin 4 of the chip U23 receives a low level signal, and the buzzer LS2 is driven to work if the pin 4 of the chip U23 receives a high level signal, so that an alarm signal with preset frequency is sent. The alarm unit further comprises a resistor R34, a resistor R35, a capacitor C21 and a capacitor C62, wherein the resistor R34, the resistor R35, the capacitor C21 and the capacitor C62 are matched with each other and used for controlling the frequency of sound emitted by the buzzer LS 2.
When the internal power supply and the external power supply have faults simultaneously, the current provided by the super capacitors S3 and S4 flows through the resistor R34 and the resistor R35, the buzzer LS2 makes a sound, and the resistor R26 can control the current of the buzzer LS2, so that the electric energy of the energy storage element is prevented from being consumed too fast. In the embodiment, the chip U23 and the buzzer LS2 are only powered by the energy storage element, the electric energy of the energy storage element is limited, when the buzzer LS2 sounds, the electric energy in the energy storage element is gradually weakened, and the alarm volume sent by the buzzer LS2 is gradually reduced. Of course, in the practical application process, the alarm unit does not necessarily use the buzzer to send out the alarm sound, and the LED can also be used to send out the alarm light.
Referring to fig. 3 and 6, the energy storage elements of the present embodiment are super capacitors S3 and S4, the electric energy of the energy storage elements is provided by an external power source or an internal power source, when the super capacitors S3 and S4 are fully charged, the voltage value is C, so as to form a dc voltage source, and the voltage value of the dc voltage source of the present embodiment is 5.5V.
The energy storage unit is provided with a switching circuit, the switching circuit comprises a field effect transistor QC2, a triode Q9, a diode D33, a diode D34, a resistor R130, a resistor R132, a resistor R134 and a resistor R135, wherein the triode Q9 is a first switching element, the field effect transistor QC2 is a second switching element, the base of the triode Q9 is a control electrode and is connected with the resistor R135, a first power supply terminal P is connected to the anode of the diode D34 through the resistor R134, a power supply switching terminal K of the medical equipment is connected to the anode of the diode D34, the cathodes of the diodes D33 and D34 are both connected to the resistor R135, and therefore, the base of the triode Q9 receives a level signal of the first power supply terminal and a power supply switching signal of the. When the main switch of the medical equipment is closed, the power switch terminal K is a high level signal, and when the main switch of the medical equipment is disconnected, the power switch terminal K is a low level signal.
The emitter of the transistor Q9 is grounded, the collector is connected to the resistor R132, the gate of the field-effect transistor QC2 is connected to the resistor R132, the source is connected to the second power supply terminal B, the drain is connected to the anode of the diode D32, and the cathode of the diode D32 is connected to the current limiter F4. Further, the first power supply terminal is also connected to the anode of the diode D23, and the cathode of the diode D23 is connected to the current limiter F4. The resistor R130 is connected between the gate and the source of the field effect transistor QC 2. In this embodiment, the base of the transistor Q9 is a control terminal, the emitter and the collector are current terminals, the gate of the field-effect transistor QC2 is a control terminal, and the source and the drain are current terminals.
When the power switch of the medical equipment is closed and the external power supply is not switched on, at the moment, the power switch terminal K is equal to the potential of the second power supply terminal B, if the voltage provided by the internal power supply is greater than or equal to 0.7V, the base of the triode Q9 is a high-level signal, the triode Q9 is conducted, the field-effect tube QC2 is also conducted, and the internal power supply supplies power to the super capacitors S3 and S4 through the second power supply terminal B, the field-effect tube QC2 and the diode D32.
When the voltage provided by the external power supply is greater than or equal to 0.7V, the transistor Q9 is conducted, but the voltage of the external power supply is higher than that of the internal power supply, the field effect transistor QC2 is cut off, and at the moment, the external power supply supplies power to the super capacitors S3 and S4 through the diode D23 through the first power supply terminal P.
The overcurrent protection circuit of the embodiment is a current limiter F4, and when the charging current is too large, the current limiter F4 will blow, so as to cut off the power supply to the super capacitors S3 and S4. The charging control circuit of the embodiment includes a voltage regulator U24, a resistor R131, a resistor R133, and a diode D31, and since the voltage regulator U24 can stabilize the charging voltage at a stable voltage value, the charging voltage is ensured to be stable. The charging current limiting circuit of the embodiment is a resistor R128, one end of the resistor R128 is connected to the cathode of the diode D31, and the other end is connected to the super capacitor S4, and the resistor R128 can reduce the charging current of the super capacitors S3 and S4.
It can be seen that when the external power supply and the internal power supply are not failed, both the external power supply and the internal power supply can charge the super capacitors S3 and S4. When the medical equipment is not connected with an external power supply, the triode Q9 and the field effect transistor QC2 are both conducted, and the internal power supply supplies stable voltage to the super capacitors S3 and S4 after passing through the voltage stabilizer U24. When the external power supply is switched on, the current passes through the diode D23 and then passes through the voltage stabilizer U24 to supply power to the super capacitors S3 and S4. When the voltage of the external power supply is higher than the voltage of the internal power supply, the super capacitors S3, S4 are powered only by the external power supply.
Once the internal power supply and the external power supply both have faults, the triode Q8 outputs a high level signal to the chip U23, and the chip U23 controls the buzzer LS2 to make an alarm sound. Since the supercapacitors S3, S4 are in a fully charged state, the buzzer LS2 can be maintained for a while.
In the embodiment, the power failure alarm circuit is provided with the super capacitor as the energy storage element, the energy storage element is charged after the internal power supply or the external power supply is switched on, the energy storage element only supplies power to devices inside the power failure alarm circuit, and the power failure alarm circuit is not controlled by the main control unit, so that when the internal power supply and the external power supply both break down, even if the main control unit of the medical equipment loses power, the work of the power failure alarm circuit is not influenced.
Of course, the above-mentioned embodiments are only preferred embodiments of the present invention, and many changes may be made in practical applications, for example, changes in the specific types of the first and second switching elements used, or changes in the specific electrical elements used in the alarm unit, which do not affect the implementation of the present invention, and are also included in the protection scope of the present invention.
Claims (10)
1. A control module for a medical device, comprising:
the medical equipment comprises a main control unit and a power failure alarm circuit, wherein the power failure alarm circuit is provided with an alarm control unit and an alarm unit, the alarm control unit receives level signals of a first power supply terminal and a second power supply terminal, and the alarm unit receives a control signal output by the alarm control unit;
the method is characterized in that:
the power failure alarm circuit is also provided with an energy storage unit, the energy storage unit is provided with an energy storage element, the energy storage element receives electric energy through the first power supply terminal or the second power supply terminal, and the energy storage unit supplies power to the alarm control unit and the alarm unit;
the main control unit is electrically isolated from the alarm control unit.
2. The control module of a medical apparatus according to claim 1, characterized in that:
the energy storage unit further comprises a switch circuit, the switch circuit comprises a first switch element and a second switch element, the control end of the first switch element receives the level signal of the first power supply terminal and the power supply switch signal of the medical equipment, one current terminal of the first switch element is electrically connected with the control end of the second switch element, and one current terminal of the second switch element is connected with the second power supply terminal.
3. The control module of a medical apparatus according to claim 2, characterized in that:
the energy storage unit further comprises a charging control circuit, and the charging control circuit receives the signal output by the switch circuit and controls the energy storage element to be charged according to the signal output by the switch circuit.
4. The control module of a medical apparatus according to claim 3, characterized in that:
the energy storage unit further comprises a charging current-limiting circuit, and the charging current-limiting circuit is connected between the charging control circuit and the energy storage element.
5. The control module of a medical apparatus according to claim 3, characterized in that:
the energy storage unit further comprises an overcurrent protection circuit, and the overcurrent protection circuit is connected between the switch circuit and the charging control circuit.
6. The control module of a medical apparatus according to claim 2, characterized in that:
the first switch element is a triode, and the second switch element is a field effect transistor.
7. The control module of a medical apparatus according to any one of claims 1 to 6, characterized in that:
the alarm control unit comprises a third switching element, and a control end of the third switching element receives level signals of the first power supply terminal and the second power supply terminal.
8. The control module of a medical apparatus of claim 7, wherein:
the alarm unit comprises an alarm frequency generating circuit, and the alarm frequency generating circuit receives the signal output by the third switching element.
9. The control module of a medical apparatus of claim 8, wherein:
the alarm unit also comprises a buzzer for receiving the signal output by the alarm frequency generation circuit.
10. Medical device comprising a drive unit and a power unit for supplying power to the drive unit, characterized in that it further comprises a control module according to any one of claims 1 to 9, the power unit being connected to the first power supply terminal and to the second power supply terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921159972X | 2019-07-22 | ||
| CN201921159972 | 2019-07-22 |
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| CN210380366U true CN210380366U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921220553.2U Active CN210380366U (en) | 2019-07-22 | 2019-07-29 | Medical equipment and control module thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098092A (en) * | 2021-04-02 | 2021-07-09 | 上海创米科技有限公司 | Power supply method and charging method of super capacitor |
| CN113555933A (en) * | 2021-07-23 | 2021-10-26 | 上海创米科技有限公司 | Charging method and charging system |
-
2019
- 2019-07-29 CN CN201921220553.2U patent/CN210380366U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098092A (en) * | 2021-04-02 | 2021-07-09 | 上海创米科技有限公司 | Power supply method and charging method of super capacitor |
| CN113555933A (en) * | 2021-07-23 | 2021-10-26 | 上海创米科技有限公司 | Charging method and charging system |
| CN113555933B (en) * | 2021-07-23 | 2024-02-27 | 上海创米数联智能科技发展股份有限公司 | Charging method and charging system |
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