CN104880599B - Power down warning circuit and Medical Devices with it - Google Patents
Power down warning circuit and Medical Devices with it Download PDFInfo
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- CN104880599B CN104880599B CN201410073846.8A CN201410073846A CN104880599B CN 104880599 B CN104880599 B CN 104880599B CN 201410073846 A CN201410073846 A CN 201410073846A CN 104880599 B CN104880599 B CN 104880599B
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Abstract
The present invention proposes a kind of power down warning circuit and the Medical Devices with it, wherein power down warning circuit includes: the first power detecting end；Second source test side；Power supply module, power supply module are used to power in machine power down for power down warning circuit；Alarm module, alarm module are connected with power supply module；Control module, control module is generated when the first power detecting end detects the external power supply power down of machine and second source test side detects the internal electric source power down of machine falls electric control signal；The control terminal of low-frequency oscillator, low-frequency oscillator is connected with control module, and the output end of low-frequency oscillator is connected with alarm module, low-frequency oscillator under the control for falling electric control signal outputting oscillation signal to alarm module so that alarm module issue warning note.Power down warning circuit of the invention realizes the alarm prompt function of power down warning circuit by nor gate chip, and component is few, and structure is simple, greatly reduces cost of manufacture, and high reliablity.
Description
Technical field
The present invention relates to technical field of medical equipment, in particular to a kind of power down warning circuit and one kind have the power down report
The Medical Devices of alert circuit.
Background technique
In the related technology, in order to ensure the life security of patient, power down warning circuit is set in Medical Devices mostly.Fall
The effect of electric alarm circuit is, when the external power supply of Medical Devices and the equal power down of internal electric source or it is abnormal when, power down alarm
Circuit generates alarm signal, to prompt medical staff.
However, power down warning circuit in the related technology designs complexity mostly, component is more, and cost of manufacture is higher.In addition,
Since the element of power down warning circuit is more, it is easy to various failures occur, to cause the warning function of power down warning circuit
It fails or the case where false alarm occurs, poor reliability is unable to satisfy the demand of user.Therefore, power down alarm in the related technology
There are improved necessity for circuit.
Summary of the invention
The present invention is directed to solve above-mentioned one of technological deficiency in the related technology at least to a certain extent.
For this purpose, the power down warning circuit structure is simple an object of the present invention is to provide a kind of power down warning circuit,
Low manufacture cost, and high reliablity.
Another purpose of the embodiment of the present invention is to propose a kind of Medical Devices.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of power down warning circuit, power down alarm electricity
Road includes: the first power detecting end；Second source test side；Power supply module, the power supply module for being in machine power down
The power down warning circuit power supply；Alarm module, the alarm module are connected with the power supply module；Control module, the control
Molding block is connected with first power detecting end and the second source test side, and the control module is in first power supply
Test side detects the external power supply power down of the machine and the second source test side detects that the inside of the machine is electric
Generate electric control signal when the power down of source；Low-frequency oscillator, the control terminal of the low-frequency oscillator are connected with the control module,
The output end of the low-frequency oscillator is connected with the alarm module, the low-frequency oscillator it is described fall electric control signal control
Lower outputting oscillation signal is made to the alarm module so that the alarm module issues warning note.
The power down warning circuit of the embodiment of the present invention the first power detecting end detect the external power supply power down of machine and
When second source test side detects the internal electric source power down of machine, generate electric control signal by control module, and then low
Frequency oscillator under the control for falling electric control signal outputting oscillation signal to alarm module so that alarm module issue warning note.
The power down warning circuit structure is simple, low manufacture cost, and high reliablity.
Further, in one embodiment of the invention, the control module includes: the first nor gate, and described first
The first input end of nor gate is connected with first power detecting end, the second input terminal of first nor gate and described the
Two power detecting ends are connected；First resistor, one end of the first resistor are connected with the first input end of first nor gate,
The other end of the first resistor is grounded；Second resistance, the second of one end of the second resistance and first nor gate are defeated
Enter end to be connected, the other end ground connection of the second resistance；Second nor gate, the first input end and second of second nor gate
Input terminal is connected with the output end of first nor gate, and the output end of second nor gate exports the power down control letter
Number.
Further, in one embodiment of the invention, the power supply module includes: first diode, and described first
The anode of diode is connected with the internal electric source；3rd resistor, one end of the 3rd resistor and the first diode
Cathode is connected；First capacitor, the positive terminal of the first capacitor are connected with the other end of the 3rd resistor, the first capacitor
Negative pole end ground connection；Second diode, the anode of second diode are grounded after being connected with the negative pole end of the first capacitor,
The cathode of second diode is connected with the positive terminal of the other end of the 3rd resistor and the first capacitor.
Further, in one embodiment of the invention, the first capacitor is electrolytic capacitor.
Further, in one embodiment of the invention, second diode is voltage-stabiliser tube.
Further, in one embodiment of the invention, the low-frequency oscillator includes: the 4th resistance；Third is non-
Door, the first input end and the second input terminal of the third nor gate are connected with one end of the 4th resistance；5th resistance,
One end of 5th resistance is connected with the other end of the 4th resistance, the other end of the 5th resistance and the third or
The output end of NOT gate is connected；Second capacitor, the other end and the described 5th of one end of second capacitor and the 4th resistance
One end of resistance is connected；Four nor gate, the output end of the first input end of the four nor gate and the third nor gate
It is connected, the second input terminal of the four nor gate is connected with the output end of second nor gate, the four nor gate
Output end is connected with the other end of second capacitor, and the output end of the four nor gate exports the oscillator signal.
Further, in one embodiment of the invention, the alarm module includes: the 6th resistance, the 6th electricity
One end of resistance is connected with the output end of the four nor gate；First triode, the base stage of first triode and described the
The other end of six resistance is connected, the emitter ground connection of first triode；7th resistance, the 7th resistance are connected to described
Between the base stage and emitter of first triode；Buzzer, one end of the buzzer are connected with the power supply module, the bee
The other end of ring device is connected with the collector of first triode.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of Medical Devices, which includes
The power down warning circuit.
The Medical Devices of the embodiment of the present invention realize the external power supply power down in Medical Devices by power down warning circuit
And when internal electric source power down, warning note is issued.The Medical Devices low manufacture cost, and high reliablity.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the circuit diagram according to the power down warning circuit of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.For letter
Change disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is for purposes of simplicity and clarity, itself not indicate the relationship between discussed various embodiments and/or setting again.This
Outside, the present invention provides various specific techniques and material example, but those of ordinary skill in the art may be aware that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
The structure of "upper" may include the embodiment that the first and second features are formed as directly contacting, and also may include other feature shape
At the embodiment between the first and second features, such first and second feature may not be direct contact.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
The power down warning circuit and Medical Devices of the embodiment of the present invention described with reference to the accompanying drawings.
As shown in Figure 1, the power down warning circuit of the embodiment of the present invention, comprising: the first power detecting end 10, second source inspection
Survey end 20, power supply module 30, alarm module 40, control module 50 and low-frequency oscillator 60.Wherein, power supply module 30 is used in machine
It powers when device power down for power down warning circuit.Alarm module 40 is connected with power supply module 30.Control module 50 and the first power supply are examined
It surveys end 10 to be connected with second source test side 20, control module 50 detects the external power supply of machine at the first power detecting end 10
Power down and second source test side 20 generate electric control signal when detecting the internal electric source Vcc power down of machine.Low-frequency oscillation
The control terminal of device 60 is connected with control module 50, and the output end of low-frequency oscillator 60 is connected with alarm module 40, low-frequency oscillator
60 under the control for falling electric control signal outputting oscillation signal to alarm module 40 so that alarm module 40 issue warning note.
Specifically, as shown in Figure 1, in one embodiment of the invention, control module 50 may include: the first nor gate
U1A such as DC4001, first resistor R1, second resistance R2 and the second nor gate U1B such as DC4001.Wherein, the first nor gate
The first input end of U1A is connected with the first power detecting end 10, and the second input terminal and second source of the first nor gate U1A detects
End 20 is connected.One end of first resistor R1 is connected with the first input end of the first nor gate U1A, another termination of first resistor R1
Ground.One end of second resistance R2 is connected with the second input terminal of the first nor gate U1A, the other end ground connection of second resistance R2.The
The first input end and the second input terminal of two nor gate U1B is connected with the output end of the first nor gate U1A, the second nor gate
Electric control signal is fallen in the output end output of U1B.It should be noted that the first nor gate U1A and the second nor gate U1B composition is just
"or" logic.Further, in one embodiment of the invention, when the first power detecting end 10 detects the external electrical of machine
When source has electricity and/or second source test side 20 to detect that the internal electric source Vcc of machine has electricity, corresponding first nor gate U1A
First input end and the input signal of the second input terminal be high level, at this point, the output signal of the second nor gate U1B is high electricity
It is flat.Therefore, in this embodiment, only when the first power detecting end 10 detects the external power supply power down of machine and second source
When test side 20 detects the internal electric source Vcc power down of machine, the first input end of corresponding first nor gate U1A and second defeated
The input signal for entering end is low level, at this point, the output signal of the second nor gate U1B is low level.
Specifically, as shown in Figure 1, in one embodiment of the invention, power supply module 30 may include: first diode
D1,3rd resistor R3, first capacitor C1 and the second diode D2.Wherein, the anode of first diode D1 and internal electric source Vcc phase
Even.One end of 3rd resistor R3 is connected with the cathode of first diode D1.The positive terminal of first capacitor C1 is with 3rd resistor R3's
The other end is connected, the negative pole end ground connection of first capacitor C1.The anode of second diode D2 is connected with the negative pole end of first capacitor C1
After be grounded, the cathode of the second diode D2 is connected with the positive terminal of the other end of 3rd resistor R3 and first capacitor C1.It needs
Bright, in one embodiment of the invention, first capacitor C1 can be electrolytic capacitor, and the second diode D2 can be pressure stabilizing
Manage such as IN751.Further, in one embodiment of the invention, when machine works normally, the internal electric source of machine
Vcc gives first capacitor C1 charging by first diode D1 and 3rd resistor R3, until the voltage on first capacitor C1 is equal to the
The pressure stabilizing value of two diode D2.Thus, machine external power supply power down and machine internal electric source Vcc power down when, first electricity
Energy can be provided for power down warning circuit by holding the electric energy laid on C1.
Specifically, as shown in Figure 1, in one embodiment of the invention, low-frequency oscillator 60 may include: the 4th resistance
R4, third nor gate U1C such as DC4001, the 5th resistance R5, the second capacitor C2 and four nor gate U1D such as DC4001.Its
In, the first input end and the second input terminal of third nor gate U1C is connected with one end of the 4th resistance R4.5th resistance R5's
One end is connected with the other end of the 4th resistance R4, and the other end of the 5th resistance R5 is connected with the output end of third nor gate U1C.The
One end of two capacitor C2 is connected with one end of the other end of the 4th resistance R4 and the 5th resistance R5.The first of four nor gate U1D
Input terminal is connected with the output end of third nor gate U1C, the second input terminal of four nor gate U1D and the second nor gate U1B's
Output end is connected, and the output end of four nor gate U1D is connected with the other end of the second capacitor C2, the output of four nor gate U1D
Hold outputting oscillation signal.Further, in one embodiment of the invention, due to the second input terminal of four nor gate U1D
It is connected with the output end of the second nor gate U1B, when the output signal of the second nor gate U1B is high level, four nor gate U1D
The second input terminal be high level, at this point, no matter the first input end of four nor gate U1D be which kind of state, four nor gate
The output end of U1D exports low level.In addition, in one embodiment of the invention, when the output of the second nor gate U1B is low
When level, the second input terminal of four nor gate U1D is low level, at this point, the output end of four nor gate U1D vibrates output
Signal.Therefore, the second input terminal of four nor gate U1D is the control terminal of low-frequency oscillator 60.
Specifically, as shown in Figure 1, in one embodiment of the invention, alarm module 40 may include: the 6th resistance
R6, the first triode Q1 such as 2N5551, the 7th resistance R7 and buzzer LS.Wherein, one end of the 6th resistance R6 with the 4th or
The output end of NOT gate U1D is connected.The base stage of first triode Q1 is connected with the other end of the 6th resistance R6, the first triode Q1's
Emitter ground connection.7th resistance R7 is connected between the base stage and emitter of the first triode Q1.One end of buzzer LS and confession
Electric module 30 is connected, and the other end of buzzer LS is connected with the collector of the first triode Q1.Further, of the invention one
In a embodiment, the output end of four nor gate U1D exports low level, and the first triode Q1 will be in off state, at this point, even
It connects and does not issue warning note in the buzzer LS of the collector of the first triode Q1, alarm module 40 is in mute state.In addition,
In another embodiment of the present invention, the output end outputting oscillation signal of four nor gate U1D, oscillator signal pass through the 6th electricity
Resistance R6 passes to the base stage of the first triode Q1, and by the collector of the first triode Q1 to buzzer LS with off and on
Voltage, to drive the warning note of buzzer LS sending intermittence tone.
The power down warning circuit of the embodiment of the present invention the first power detecting end detect the external power supply power down of machine and
When second source test side detects the internal electric source power down of machine, generate electric control signal by control module, and then low
Outputting oscillation signal is to alarm module under the control for falling electric control signal for frequency oscillator, so that alarm module issues alarm and mentions
Show.The power down warning circuit realizes the alarm prompt function of power down warning circuit by nor gate chip, and component is few, structure
Simply, cost, and high reliablity are greatly reduced, the demand of user is greatly met.
In addition, the embodiment of the present invention also proposed a kind of Medical Devices, which includes above-mentioned power down alarm
Circuit.
The Medical Devices of the embodiment of the present invention realize the external power supply power down in Medical Devices by power down warning circuit
And when internal electric source power down, warning note is issued.The Medical Devices realize the report of power down warning circuit by nor gate chip
Alert prompt facility, component is few, and structure is simple, greatly reduces cost, and high reliablity, greatly meets the need of user
It asks.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (7)
1. a kind of power down warning circuit characterized by comprising
First power detecting end；
Second source test side；
Power supply module, the power supply module are used to power in machine power down for the power down warning circuit；
Alarm module, the alarm module are connected with the power supply module；
Control module, the control module are connected with first power detecting end and the second source test side, the control
Molding block detects the external power supply power down of the machine at first power detecting end and the second source test side is examined
Generate electric control signal when measuring the internal electric source power down of the machine；
Low-frequency oscillator, the control terminal of the low-frequency oscillator are connected with the control module, the output of the low-frequency oscillator
End is connected with the alarm module, the low-frequency oscillator it is described fall electric control signal control under outputting oscillation signal to institute
Alarm module is stated so that the alarm module issues warning note；
Wherein, the control module includes:
The first input end of first nor gate, first nor gate is connected with first power detecting end, described first or
Second input terminal of NOT gate is connected with the second source test side；
First resistor, one end of the first resistor are connected with the first input end of first nor gate, the first resistor
The other end ground connection；
Second resistance, one end of the second resistance are connected with the second input terminal of first nor gate, the second resistance
The other end ground connection；
Second nor gate, output of the first input end and the second input terminal of second nor gate with first nor gate
End is connected, and falls electric control signal described in the output end output of second nor gate.
2. power down warning circuit as described in claim 1, which is characterized in that the power supply module includes:
First diode, the anode of the first diode are connected with the internal electric source；
3rd resistor, one end of the 3rd resistor are connected with the cathode of the first diode；
First capacitor, the positive terminal of the first capacitor are connected with the other end of the 3rd resistor, and the first capacitor is born
Extreme ground connection；
Second diode, the anode of second diode are grounded after being connected with the negative pole end of the first capacitor, and described second
The cathode of diode is connected with the positive terminal of the other end of the 3rd resistor and the first capacitor.
3. power down warning circuit as claimed in claim 2, which is characterized in that the first capacitor is electrolytic capacitor.
4. power down warning circuit as claimed in claim 2, which is characterized in that second diode is voltage-stabiliser tube.
5. power down warning circuit as described in claim 1, which is characterized in that the low-frequency oscillator includes:
4th resistance；
Third nor gate, one end phase of the first input end and the second input terminal of the third nor gate with the 4th resistance
Even；
One end of 5th resistance, the 5th resistance is connected with the other end of the 4th resistance, the 5th resistance it is another
End is connected with the output end of the third nor gate；
Second capacitor, one end of second capacitor and the other end of the 4th resistance and one end phase of the 5th resistance
Even；
Four nor gate, the first input end of the four nor gate are connected with the output end of the third nor gate, and described
Second input terminal of four nor gate is connected with the output end of second nor gate, the output end of the four nor gate with it is described
The other end of second capacitor is connected, and the output end of the four nor gate exports the oscillator signal.
6. power down warning circuit as claimed in claim 5, which is characterized in that the alarm module includes:
One end of 6th resistance, the 6th resistance is connected with the output end of the four nor gate；
First triode, the base stage of first triode are connected with the other end of the 6th resistance, first triode
Emitter ground connection；
7th resistance, the 7th resistance are connected between the base stage and emitter of first triode；
Buzzer, one end of the buzzer are connected with the power supply module, the other end of the buzzer and the described 1st
The collector of pole pipe is connected.
7. a kind of Medical Devices, which is characterized in that including power down warning circuit such as of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073846.8A CN104880599B (en) | 2014-02-28 | 2014-02-28 | Power down warning circuit and Medical Devices with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410073846.8A CN104880599B (en) | 2014-02-28 | 2014-02-28 | Power down warning circuit and Medical Devices with it |
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| CN104880599A CN104880599A (en) | 2015-09-02 |
| CN104880599B true CN104880599B (en) | 2019-06-25 |
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ID=53948166
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| CN201410073846.8A Active CN104880599B (en) | 2014-02-28 | 2014-02-28 | Power down warning circuit and Medical Devices with it |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459708A (en) * | 2018-12-18 | 2019-03-12 | 广东原点智能技术有限公司 | Numerically-controlled machine tool power supply alarm circuit |
| CN109596999B (en) * | 2019-01-19 | 2023-12-12 | 重庆山外山血液净化技术股份有限公司 | Power supply monitoring unit of blood purifying equipment |
| CN114550434A (en) * | 2020-11-25 | 2022-05-27 | 深圳市理邦精密仪器股份有限公司 | Alarm circuit, medical equipment and alarm method |
| CN113315187A (en) * | 2020-12-22 | 2021-08-27 | 深圳市奥达电源科技有限公司 | Alarm driving circuit and power failure monitoring device |
| CN112886697A (en) * | 2020-12-31 | 2021-06-01 | 杭州堃博生物科技有限公司 | Injection pump and power supply circuit thereof |
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