CN205510006U - Switching on and shutting down circuit and medical equipment - Google Patents
Switching on and shutting down circuit and medical equipment Download PDFInfo
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- CN205510006U CN205510006U CN201620188274.2U CN201620188274U CN205510006U CN 205510006 U CN205510006 U CN 205510006U CN 201620188274 U CN201620188274 U CN 201620188274U CN 205510006 U CN205510006 U CN 205510006U
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Abstract
The utility model discloses a switching on and shutting down circuit and medical equipment, this switching on and shutting down circuit include breech lock relay circuit, MOSFET pipe circuit and the 2nd MOSFET pipe circuit, solenoid's in the latching relay break -make is realized through receiving control level to the switching on and shutting down circuit, and break -make through solenoid in the latching relay realizes the switching of switch between normally open contact and normally closed contact in the latching relay to realize the break -make between power and the load, control level need not be in the persistent state, and the contact state of relay is kept by machinery completely, very big reduction the consumption, and breech lock relay contact points and control coil complete independence, the scope of discharging of input power is not limited by the major loop, has improved the stability and the efficiency of switching on and shutting down circuit, has promoted battery supply set's battery time of endurance, has improved user's experience degree.
Description
Technical field
This utility model relates to switching on and shutting down technical field, particularly relates to on/off circuit and armarium.
Background technology
In existing armarium, the major loop of boot-strap circuit generally uses MOSFET to manage (Metal-Oxide
Field-Effect Transistor, metal oxide semiconductor field effect tube) as switch, by controlling
MOSFET pipe ON-OFF realizes system switching machine.Owing to MOSFET pipe has internal resistance in the on-state,
There is under cut-off state static leakage current, and must run continuously in main frame start or off-mode,
MOSFET pipe switch itself requires the expenditure of energy, and therefore the power consumption of MOSFET realizes low merit to battery supply set
It is unfavorable to consume.Further, since conventional MOSFET grid source cut-in voltage is all at more than 2.0V, and gate source voltage
The lowest, the communication channel of drain-source is the least, and MOSFET pipe conducting resistance is relatively big, causes the drain-source of MOSFET pipe
Pressure drop ratio is bigger.Therefore use MOSFET pipe as major loop switch for single-unit battery core (lithium battery is fully charged,
Voltage is 4.2V) powered medical equipment exist limit discharge range problem.
Being illustrated in figure 1 existing conventional switching on and shutting down major loop, the MOSFET tube grid in circuit is by the collection of audion
Electrode controls, the base stage connection control signal of audion.To keep MOSFET pipe in the conduction state, then
Audion necessarily be in constant conduction state, and namely control signal is continuously in high level.In circuit except
Outside major loop MOSFET self conducting power consumption, the also conducting power consumption of audion.To persistently cutting of MOSFET pipe
Only state, audion necessarily be in lasting cut-off state, and control signal has to last for as low level.Due to
There is leakage current in the drain-source of MOSFET pipe own, therefore MOSFET pipe the most still has power consumption.Again
Because general audion saturation conduction VCE (sat) (Collector-Emitter Saturation Voltage,
The saturation voltage of collector and emitter) it is 0.2V, add that MOSFET pipe grid source cut-in voltage is 2.0V, because of
This input power have to be larger than more than 2.2V guarantee MOSFET conducting.
Utility model content
This utility model provides on/off circuit and armarium, and this circuit comes real by receiving control level
In existing latching relay, the break-make of solenoid, realizes door bolt by the break-make of solenoid in latching relay
Lock relay breaker in middle switching between normally opened contact and normally-closed contact, thus realize between power supply and load
Break-make, greatly reduce power consumption.
For realizing above-mentioned design, this utility model by the following technical solutions:
On the one hand providing a kind of on/off circuit, this circuit includes: latching relay circuit, a MOSFET
Pipe circuit and the 2nd MOSFET pipe circuit；
A described MOSFET pipe circuit receives the first control level, and a MOSFET pipe conducting, to described
Latching relay circuit exports the first drive level；Described first drive level drives described latching relay electricity
In road, the set coil of latching relay is connected, normally opened contact closes, so that power supply is connected with load；
Described 2nd MOSFET pipe circuit receives the second control level, and the 2nd MOSFET pipe conducting, to described
Latching relay exports the second drive level；Described second drive level drives in described latching relay circuit
The resetting coil of latching relay is connected, normally-closed contact Guan Bi, disconnects so that controlling power supply with load.
Wherein, also include: switching on and shutting down key circuit and processor；Described switching on and shutting down key circuit connects respectively
The grid of a described MOSFET pipe circuit and the control input of described processor；
When pressing the switching on and shutting down button of switching on and shutting down key circuit, described first control level flows to first simultaneously
MOSFET pipe circuit and processor；A described MOSFET pipe circuit receives the first control level, and first
MOSFET pipe turns on, and exports the first drive level to described latching relay circuit；Described first drive level
The set coil driving latching relay in described latching relay circuit is connected, normally opened contact Guan Bi, so that
Power supply is connected with load；
Described processor receives the first control level and carries out power-up initializing, detects described first control level
Persistent period, if the described persistent period is more than preset time threshold, produce described second control level, described
2nd MOSFET pipe circuit receives the second control level, and the 2nd MOSFET pipe conducting, to described breech lock relay
Device circuit exports the second drive level；Described second drive level drives breech lock in described latching relay circuit
The resetting coil of relay is connected, normally-closed contact Guan Bi, disconnects so that controlling power supply with load.
Wherein, also including: switching on and shutting down button, described switching on and shutting down button includes the first switching on and shutting down button and second
Switching on and shutting down button；
The grid of described first switching on and shutting down button and a MOSFET pipe circuit is connected, and opens when pressing described first
Shutdown button, a described MOSFET pipe circuit receives the first control level, a MOSFET pipe conducting,
The first drive level is exported to described latching relay circuit；Described first drive level drives described breech lock to continue
In appliance circuit, the set coil of latching relay is connected, normally opened contact closes, so that power supply is connected with load；
The grid of described second switch machine button and the 2nd MOSFET pipe circuit is connected, and opens when pressing described second
Shutdown button, described 2nd MOSFET pipe circuit receives the second control level, the 2nd MOSFET pipe conducting,
The second drive level is exported to described latching relay circuit；Described second drive level drives described breech lock to continue
In appliance circuit, the resetting coil of latching relay is connected, normally-closed contact closes, so that controlling power supply and load
Disconnect.
Wherein, described latching relay circuit includes: latching relay, the first diode, the second diode,
First resistance, polar capacitor；Described latching relay is TQ-L2-3V latching relay, a described MOSFET
Pipe and described 2nd MOSFET pipe are N-channel enhancement mode MOSFET pipe；
1st pin of described latching relay connects the 4th pin of latching relay, latching relay respectively
The 7th pin, the 10th pin of latching relay, power input, the negative pole of described first diode and
The negative pole of described second diode, the positive pole of described first diode connects the 6th pipe of latching relay respectively
Foot and the drain electrode of described 2nd MOSFET pipe, the positive pole of described second diode connects described first respectively
The drain electrode of MOSFET pipe and the 5th pin of latching relay, the 2nd pin of described latching relay connects respectively
Meet the 9th pin of latching relay, one end of the first resistance, the other end ground connection of described first resistance, institute
State the 3rd pin of latching relay connect respectively the 8th pin of latching relay, described power input and
The positive pole of described polar capacitor, the minus earth of described polar capacitor.
Wherein, a described MOSFET pipe circuit includes: a MOSFET pipe, the first electric capacity, the second electricity
Resistance, the 3rd resistance and the 4th resistance；
The grid of a described MOSFET pipe connects one end of described first electric capacity and described second resistance respectively
One end, the other end ground connection of described first electric capacity, the other end of described second resistance connects the described 3rd respectively
One end of resistance, one end of described 4th resistance and one end of switching on and shutting down button, another of described 3rd resistance
End ground connection, the other end of described 4th resistance connects opens signal connection end, the source of a described MOSFET pipe
Pole ground connection；
Described 2nd MOSFET pipe circuit includes: the 2nd MOSFET pipe, the second electric capacity, the 5th resistance,
Six resistance；The grid of described 2nd MOSFET pipe connects one end of described second electric capacity and described 5th electricity respectively
One end of resistance, the other end ground connection of described second electric capacity, the other end of described 5th resistance connects described respectively
One end of 6th resistance and shutdown signal connection end, the other end ground connection of described 6th resistance, described second
The source ground of MOSFET pipe.
Wherein, described switching on and shutting down key circuit includes: switching on and shutting down button and the 3rd diode；
The negative pole of described 3rd diode is connected with the other end of described switching on and shutting down button, described 3rd diode
Positive pole connect power input.
On the other hand, it is provided that a kind of armarium, this armarium includes the switch described in any of the above-described item
Dynamo-electric road.
The beneficial effects of the utility model are: this utility model embodiment breaker in middle electromechanics road includes breech lock relay
Device circuit, a MOSFET pipe circuit and the 2nd MOSFET pipe circuit；A described MOSFET pipe circuit receives
First control level, a MOSFET pipe conducting, export the first drive level to described latching relay circuit；
Described first drive level drives the set coil of latching relay in described latching relay circuit to connect, often
Open the closing of contact, so that power supply is connected with load；Described 2nd MOSFET pipe circuit receives the second control level,
2nd MOSFET pipe conducting, exports the second drive level to described latching relay；Described second drive level
The resetting coil driving latching relay in described latching relay circuit is connected, normally-closed contact Guan Bi, so that
Control power supply and load disconnects.The on/off circuit on/off circuit of this utility model embodiment is controlled by reception
Level processed realizes the break-make of solenoid in latching relay, by solenoid logical in latching relay
Break the switching realizing latching relay breaker in middle between normally opened contact and normally-closed contact, thus realize power supply
And the break-make between load；Described control level needs not be at persistent state, and the contacts status of relay is complete
Entirely kept by machinery, greatly reduce power consumption；And latching relay contact is completely independent with control coil,
The discharge range of input power is not limited by major loop, improves stability and the efficiency of on/off circuit, carries
Rise the battery life of battery supply set, improve the Experience Degree of user.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below will be to this utility model
Embodiment in describing the required accompanying drawing used be briefly described, it should be apparent that, attached in describing below
Figure is only embodiments more of the present utility model, for those of ordinary skill in the art, is not paying
On the premise of creative work, it is also possible to content and these accompanying drawings according to this utility model embodiment obtain it
His accompanying drawing.
Fig. 1 is existing conventional switching on and shutting down major loop.
Fig. 2 is the circuit of the first embodiment of the on/off circuit provided in this utility model detailed description of the invention
Structured flowchart.
Fig. 3 is the circuit of the second embodiment of the on/off circuit provided in this utility model detailed description of the invention
Structured flowchart.
Fig. 4 is the circuit of the 3rd embodiment of the on/off circuit provided in this utility model detailed description of the invention
Structured flowchart.
Fig. 5 is the main loop circuit block diagram of the on/off circuit provided in this utility model detailed description of the invention.
Detailed description of the invention
For making this utility model solve the technical problem that, the technical scheme that uses and the technique effect that reaches more
Clear, below in conjunction with accompanying drawing, the technical scheme of this utility model embodiment is described in further detail,
Obviously, described embodiment is only a part of embodiment of this utility model rather than whole embodiments.
Based on the embodiment in this utility model, those skilled in the art are institute under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Detailed description of the invention of the present utility model is described in detail by 2-5 below in conjunction with the accompanying drawings.
As in figure 2 it is shown, a kind of on/off circuit, including: latching relay circuit, a MOSFET pipe electricity
Road and the 2nd MOSFET pipe circuit；
A described MOSFET pipe circuit receives the first control level, and a MOSFET pipe conducting, to described
Latching relay circuit exports the first drive level；Described first drive level drives described latching relay electricity
In road, the set coil of latching relay is connected, normally opened contact closes, so that power supply is connected with load；
Described 2nd MOSFET pipe circuit receives the second control level, and the 2nd MOSFET pipe conducting, to described
Latching relay exports the second drive level；Described second drive level drives in described latching relay circuit
The resetting coil of latching relay is connected, normally-closed contact Guan Bi, disconnects so that controlling power supply with load.
Concrete, on/off circuit makes breech lock by producing the first drive level after receiving the first control level
In relay, set coil energising is connected, and set coil is connected generation electromagnetic induction suction shaft cutter and beaten to normally opened
Contact, so that normally opened contact Guan Bi, normally-closed contact disconnect, connects so that controlling power supply with load.Switch
Dynamo-electric road makes resetting coil in latching relay by producing the second drive level after receiving the second control level
Energising is connected, and resetting coil is connected generation electromagnetic induction suction shaft cutter and beaten to normally-closed contact, so that breech lock
In relay, normally opened contact disconnects, normally-closed contact closes, to realize the break-make between power supply and load.Wherein,
First control level and the second control level can be all high level or low level, and the first control level and
Two control levels are all not necessary for lasting high level or lasting low level.
In the present embodiment, resetting coil is thicker than set coil, and the electromagnetic induction of generation is strong, receives when simultaneously and opens
During the drive level of the drive level that opens and shutoff, the switch cutter of latching relay is beaten to normally-closed contact, thus
Make normally opened contact in latching relay disconnect, normally-closed contact closes, to realize the disconnection between power supply and load.
Latching relay contacts status has memory function, after latching relay receives a drive level, and breech lock
The contacts status of relay can be always maintained at, until receiving next drive level, the break-make of coil is occurred
During change, the contacts status of latching relay just can switch over；I.e. when latching relay makes power supply and bears
After carrying conducting, even if cutting-off controlling level makes drive level disappear, do not interfere with power supply and load conduction yet
State；In like manner, after latching relay makes power supply and load disconnect, i.e. cutting-off controlling level makes to drive
Level disappears, and does not also interfere with power supply and the state of load disconnection.The state of the contact of latching relay is complete
Kept by machinery, low in energy consumption, it is not necessary to lasting control level, greatly improve the effect of on/off circuit
Rate, improves the Experience Degree of user.
As it is shown on figure 3, described on/off circuit also includes: switching on and shutting down key circuit and processor；Described open
Shutdown button connects grid and the control input of described processor of a described MOSFET pipe circuit respectively；
When pressing the switching on and shutting down button of switching on and shutting down key circuit, described first control level flows to first simultaneously
MOSFET pipe circuit and processor；A described MOSFET pipe circuit receives the first control level, and first
MOSFET pipe turns on, and exports the first drive level to described latching relay circuit；Described first drive level
The set coil driving latching relay in described latching relay circuit is connected, normally opened contact Guan Bi, so that
Power supply is connected with load；
Described processor receives the first control level and carries out power-up initializing, it is judged that described first control level
When whether the persistent period is more than preset time threshold, if the described persistent period, more than preset time threshold, produces
Described second control level, described 2nd MOSFET pipe circuit receives the second control level, the 2nd MOSFET
Pipe turns on, and exports the second drive level to described latching relay circuit；Described second drive level drives institute
State the resetting coil connection of latching relay in latching relay circuit, normally-closed contact Guan Bi, so that controlling electricity
Source and load disconnect.
Concrete, when pressing the switching on and shutting down button of switching on and shutting down key circuit, a described MOSFET pipe circuit connects
Receiving the first control level, a MOSFET pipe conducting, to described latching relay circuit output the first driving electricity
Flat；The set coil connection of latching relay in the described first drive level described latching relay circuit of driving,
Normally opened contact closes, so that power supply is connected with load；Processor receives the first control level, processor simultaneously
The persistent period of the first control level is detected, when the described persistent period is more than Preset Time threshold after initialization
During value, export the second drive level to described latching relay circuit so that the resetting coil of latching relay
Connect, normally-closed contact closes, and disconnects so that controlling power supply with load.Preferably, preset time threshold is 2-4
Second.
In the present embodiment, the time that processor powers on is the shortest, with preset time threshold differs several orders of magnitude,
Also far below coil power on after electric discharge time, thus the time that processor powers on can ignore.When power supply and
When load is connected, again press switching on and shutting down button, if pressing switching on and shutting down button duration (i.e. to control electricity
Flat duration) more than preset time threshold time, power supply and load disconnect；If pressing switching on and shutting down button to hold
When the continuous time is less than or equal to preset time threshold, power supply and load remain turned on.When power supply and load
During disconnection, again press switching on and shutting down button, if pressing switching on and shutting down button to be sustained for longer than Preset Time threshold
During value, power supply and load remain off；If pressing switching on and shutting down button duration less than or equal to presetting
During time threshold, power supply is connected with load.
As shown in Figure 4, on/off circuit also includes: switching on and shutting down button, and described switching on and shutting down button includes first
Switching on and shutting down button and second switch machine button；
The grid of described first switching on and shutting down button and a MOSFET pipe circuit is connected, and opens when pressing described first
Shutdown button, a described MOSFET pipe circuit receives the first control level, a MOSFET pipe conducting,
The first drive level is exported to described latching relay circuit；Described first drive level drives described breech lock to continue
In appliance circuit, the set coil of latching relay is connected, normally opened contact closes, so that power supply is connected with load；
The grid of described second switch machine button and the 2nd MOSFET pipe circuit is connected, and opens when pressing described second
Shutdown button, described 2nd MOSFET pipe circuit receives the second control level, the 2nd MOSFET pipe conducting,
The second drive level is exported to described latching relay circuit；Described second drive level drives described breech lock to continue
In appliance circuit, the resetting coil of latching relay is connected, normally-closed contact closes, so that controlling power supply and load
Disconnect.
In the present embodiment, the first switching on and shutting down are connected with load by key control power supply, and key control pressed by second switch machine
Power supply and load disconnect.
As it is shown in figure 5, in on/off circuit, described latching relay circuit 10 includes: latching relay T1,
First diode D1, the second diode D2, the first resistance R1, polar capacitor C1；Described latching relay
T1 is TQ-L2-3V latching relay, and a described MOSFET pipe and described 2nd MOSFET pipe are N ditch
Road enhancement mode MOSFET pipe；
1st pin of described latching relay T1 connects the 4th pin of latching relay T1, breech lock respectively
7th pin of relay T1, the 10th pin of latching relay T1, power input, the described 1st
The negative pole of pole pipe D1 and the negative pole of described second diode D2, the positive pole of described first diode D1 connects respectively
Connect the 6th pin and the drain electrode of described 2nd MOSFET pipe Q2 of latching relay T1, described second diode
The positive pole of D2 connects drain electrode and the 5th pin of latching relay T1 of a described MOSFET pipe Q1 respectively,
2nd pin of described latching relay T1 connects the 9th pin of latching relay T1, the first resistance respectively
One end of R1, the other end ground connection of described first resistance R1, the 3rd pin of described latching relay T1 divides
Not Lian Jie the 8th pin of latching relay T1, described power input and the positive pole of described polar capacitor C1,
The minus earth of described polar capacitor C1.
Concrete, latching relay T1 the 6th pin and the energising of the 10th pin Inside coil (resetting coil)
After, the contact of relay the 3rd pin and the 8th pin is (normal with the contact of the 2nd pin and the 9th pin respectively
Closed contact) short circuit, power supply disconnects with load；Latching relay T1 the 1st pin and the 5th pin Inside coil
(set coil) energising after, the contact of relay the 3rd pin and the 8th pin respectively with the 4th pin and the 7th
Contact (normally opened contact) short circuit of pin, power supply is connected with load.Wherein, relay the 3rd pin and the 8th
The contact of pin contact (normally-closed contact) short circuit with the 2nd pin and the 9th pin respectively is latching relay
The reset state of T1.Latching relay T1 Inside coil (resetting coil, set coil) is inductive element,
First diode D1 and the second diode D2 has afterflow effect, when the 2nd MOSFET pipe Q2 cut-off, and door bolt
6th pin of lock relay T1 and the 10th pin Inside coil (resetting coil) power-off, resetting coil electricity
Sense reverses current through the first diode D1 continuous current discharge electricity, reduces drain-source during the 2nd MOSFET pipe Q2 cut-off
Surge voltage, it is to avoid the 2nd MOSFET pipe Q2 is burned；When a MOSFET pipe Q1 cut-off, breech lock
1st pin of relay T1 and the 5th pin Inside coil (set coil) power-off, set coil inductance is anti-
To electric current by diode D2 continuous current discharge electricity, reduce a drain-source surge voltage during MOSFET pipe Q1 cut-off,
A MOSFET pipe Q1 is avoided to be burned.Preferably, the first diode D1 and the type of the second diode D2
Number it is: LL4148；Oneth MOSFET pipe Q1 and a MOSFET pipe Q2 model be: ZXM61N03F.
In the present embodiment, on/off circuit realizes breech lock by the break-make of solenoid in latching relay T1
The switching between normally opened contact and normally-closed contact of the relay T1 breaker in middle, thus realize between power supply and load
Break-make；Described control level needs not be at persistent state, and the contacts status of relay is protected by machinery completely
Hold, greatly reduce power consumption；And latching relay T1 contact is completely independent with control coil, discharge range
Do not limited by major loop, improve stability and the efficiency of on/off circuit, improve the Experience Degree of user.
As it is shown in figure 5, in on/off circuit, a described MOSFET pipe Q1 circuit 20 includes: a MOSFET
Pipe Q1, the first electric capacity C2, the second resistance R2, the 3rd resistance R3 and the 4th resistance R60；A described MOSFET
The grid of pipe Q1 connects one end and one end of described second resistance R2 of described first electric capacity C2 respectively, described
The other end ground connection of the first electric capacity C2, the other end of described second resistance R2 connects described 3rd resistance respectively
One end of R3, one end of described 4th resistance R60 and one end of switching on and shutting down button SW, described 3rd resistance
The other end ground connection of R3, the other end of described 4th resistance R60 connects opens signal connection end POWER_ON,
The source ground of a described MOSFET pipe Q1；
Described 2nd MOSFET pipe Q2 circuit 30 includes: the 2nd MOSFET pipe Q2, the second electric capacity C3,
Five resistance R58, the 6th resistance R61；The grid of described 2nd MOSFET pipe Q2 connects described second electricity respectively
Hold one end and one end of described 5th resistance R58, the other end ground connection of described second electric capacity C3, the institute of C3
The other end stating the 5th resistance R58 connects one end and the shutdown signal connection end of described 6th resistance R61 respectively
POWER_OFF, the other end ground connection of described 6th resistance R61, the source electrode of described 2nd MOSFET pipe Q2 connects
Ground.
In the present embodiment, after a MOSFET pipe Q1 receives control level conducting, to described latching relay
1st pin and the energising of the 5th pin Inside coil (set coil), relay the 3rd pin and the 8th in T1
The contact of pin respectively with the 4th pin and contact (normally opened contact) short circuit of the 7th pin, power supply and load
Connect.After 2nd MOSFET pipe Q2 receives control level conducting, the 6th pin and the 10th pin Inside coil
(resetting coil) energising after, the contact of relay the 3rd pin and the 8th pin respectively with the 2nd pin and the 9th
Contact (normally-closed contact) short circuit of pin, power supply disconnects with load.MOSFET pipe adds to latching relay T1
Strong driving, when control level overtension, protection latching relay T1 exempts to be burned.In the present embodiment,
MOSFET pipe and latching relay T1 are combined by on/off circuit, and safety and stability greatly reduces merit
Consuming, and latching relay T1 contact is completely independent with control coil, discharge range is not limited by major loop, carries
The stability of high on/off circuit and efficiency, improve the Experience Degree of user.
As it is shown in figure 5, in on/off circuit, described switching on and shutting down key circuit 40 includes: switching on and shutting down button SW
With the 3rd diode D23；
The negative pole of described 3rd diode D23 is connected with the other end of described switching on and shutting down button SW, and the described 3rd
The positive pole of diode D23 connects power input.
In the present embodiment, the 3rd diode D23 is provided with beneficially protection switching on and shutting down button SW.
Certainly, those skilled in the art can also be according to common knowledge, at the technical background of the technical program
Under, select the circuit of other forms and the electronic devices and components of other parameters to realize corresponding function, the most no longer
Citing repeats.
This utility model also provides for a kind of armarium, including the on/off circuit of any of the above-described embodiment.
In the present embodiment, above-mentioned on/off circuit may be used in single-unit battery core powered medical equipment, switch
Dynamo-electric road realizes latching relay breaker in middle at normally opened contact by the break-make of solenoid in latching relay
And the switching between normally-closed contact, thus realize the break-make between power supply and load；Described control level is not required to
Persistent state to be in, the contacts status of relay is kept by machinery completely, greatly reduces power consumption, and
Latching relay contact is completely independent with control coil, and the discharge range of input power is not limited by major loop,
Improve stability and the efficiency of on/off circuit, improve the battery life of battery supply set, have
It is beneficial to the stable of armarium work and safety, improves the Experience Degree of user.
Know-why of the present utility model is described above in association with specific embodiment.These describe and are intended merely to solve
Release principle of the present utility model, and the restriction to this utility model protection domain can not be construed to by any way.
Based on explanation herein, those skilled in the art need not pay performing creative labour can associate this reality
By other novel detailed description of the invention, within these modes fall within protection domain of the present utility model.
Claims (7)
1. an on/off circuit, it is characterised in that including: latching relay circuit, a MOSFET pipe
Circuit and the 2nd MOSFET pipe circuit；
A described MOSFET pipe circuit receives the first control level, and a MOSFET pipe conducting, to described
Latching relay circuit exports the first drive level；Described first drive level drives described latching relay electricity
In road, the set coil of latching relay is connected and normally opened contact Guan Bi, so that power supply is connected with load；
Described 2nd MOSFET pipe circuit receives the second control level, and the 2nd MOSFET pipe conducting, to described
Latching relay exports the second drive level；Described second drive level drives in described latching relay circuit
The resetting coil of latching relay is connected and normally-closed contact Guan Bi, disconnects so that controlling power supply with load.
On/off circuit the most according to claim 1, it is characterised in that also include: switching on and shutting down button
Circuit and processor；Described switching on and shutting down key circuit connect respectively a described MOSFET pipe circuit grid and
The control input of described processor；
When pressing the switching on and shutting down button of switching on and shutting down key circuit, described first control level flows to first simultaneously
MOSFET pipe circuit and processor；A described MOSFET pipe circuit receives the first control level, and first
MOSFET pipe turns on, and exports the first drive level to described latching relay circuit；Described first drive level
The set coil driving latching relay in described latching relay circuit is connected and normally opened contact Guan Bi, so that
Power supply is connected with load；
Described processor receives the first control level and carries out power-up initializing, detects described first control level
Persistent period, if the described persistent period is more than preset time threshold, produce described second control level, described
2nd MOSFET pipe circuit receives the second control level, and the 2nd MOSFET pipe conducting, to described breech lock relay
Device circuit exports the second drive level；Described second drive level drives breech lock in described latching relay circuit
The resetting coil of relay is connected and normally-closed contact Guan Bi, disconnects so that controlling power supply with load.
On/off circuit the most according to claim 1, it is characterised in that also include: switching on and shutting down button,
Described switching on and shutting down button includes the first switching on and shutting down button and second switch machine button；
The grid of described first switching on and shutting down button and a MOSFET pipe circuit is connected, and opens when pressing described first
Shutdown button, a described MOSFET pipe circuit receives the first control level, a MOSFET pipe conducting,
The first drive level is exported to described latching relay circuit；Described first drive level drives described breech lock to continue
In appliance circuit, the set coil of latching relay is connected, normally opened contact closes, so that power supply is connected with load；
The grid of described second switch machine button and the 2nd MOSFET pipe circuit is connected, and opens when pressing described second
Shutdown button, described 2nd MOSFET pipe circuit receives the second control level, the 2nd MOSFET pipe conducting,
The second drive level is exported to described latching relay circuit；Described second drive level drives described breech lock to continue
In appliance circuit, the resetting coil of latching relay is connected, normally-closed contact closes, so that controlling power supply and load
Disconnect.
On/off circuit the most according to claim 2, it is characterised in that described latching relay circuit
Including: latching relay, the first diode, the second diode, the first resistance, polar capacitor；Described door bolt
Lock relay is TQ-L2-3V latching relay, and a described MOSFET pipe and described 2nd MOSFET pipe are all
Manage for N-channel enhancement mode MOSFET；
1st pin of described latching relay connects the 4th pin of latching relay, latching relay respectively
The 7th pin, the 10th pin of latching relay, power input, the negative pole of described first diode and
The negative pole of described second diode, the positive pole of described first diode connects the 6th pipe of latching relay respectively
Foot and the drain electrode of described 2nd MOSFET pipe, the positive pole of described second diode connects described first respectively
The drain electrode of MOSFET pipe and the 5th pin of latching relay, the 2nd pin of described latching relay connects respectively
Meet the 9th pin of latching relay, one end of the first resistance, the other end ground connection of described first resistance, institute
State the 3rd pin of latching relay connect respectively the 8th pin of latching relay, described power input and
The positive pole of described polar capacitor, the minus earth of described polar capacitor.
On/off circuit the most according to claim 1, it is characterised in that a described MOSFET pipe electricity
Road includes: a MOSFET pipe, the first electric capacity, the second resistance, the 3rd resistance and the 4th resistance；Described
The grid of one MOSFET pipe connects one end and one end of described second resistance of described first electric capacity respectively, described
The other end ground connection of the first electric capacity, the other end of described second resistance connect respectively described 3rd resistance one end,
One end of described 4th resistance and one end of switching on and shutting down button, the other end ground connection of described 3rd resistance is described
The other end of the 4th resistance connects opens signal connection end, the source ground of a described MOSFET pipe；
Described 2nd MOSFET pipe circuit includes: the 2nd MOSFET pipe, the second electric capacity, the 5th resistance,
Six resistance；The grid of described 2nd MOSFET pipe connects one end of described second electric capacity and described 5th electricity respectively
One end of resistance, the other end ground connection of described second electric capacity, the other end of described 5th resistance connects described respectively
One end of 6th resistance and shutdown signal connection end, the other end ground connection of described 6th resistance, described second
The source ground of MOSFET pipe.
On/off circuit the most according to claim 2, it is characterised in that described switching on and shutting down key circuit
Including: switching on and shutting down button and the 3rd diode；
The negative pole of described 3rd diode is connected with the other end of described switching on and shutting down button, described 3rd diode
Positive pole connect power input.
7. an armarium, it is characterised in that include that the switch described in any one of claim 1-6 is dynamo-electric
Road.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188274.2U CN205510006U (en) | 2016-03-11 | 2016-03-11 | Switching on and shutting down circuit and medical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188274.2U CN205510006U (en) | 2016-03-11 | 2016-03-11 | Switching on and shutting down circuit and medical equipment |
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| CN205510006U true CN205510006U (en) | 2016-08-24 |
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| CN201620188274.2U Active CN205510006U (en) | 2016-03-11 | 2016-03-11 | Switching on and shutting down circuit and medical equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811948A (en) * | 2016-03-11 | 2016-07-27 | 深圳市安保科技有限公司 | Switching circuit, switching method and medical equipment |
| CN111198527A (en) * | 2020-01-15 | 2020-05-26 | 北京实干兴邦科技有限公司 | FPGA-based GPIO output state control device, control method and application |
| CN113467313A (en) * | 2021-07-15 | 2021-10-01 | 上海市特种设备监督检验技术研究院 | Startup and shutdown circuit for battery power supply and startup and shutdown time sequence design method |
| CN114546085A (en) * | 2020-11-24 | 2022-05-27 | 上海西门子医疗器械有限公司 | Power supply control module and system of double computers and medical imaging equipment |
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2016
- 2016-03-11 CN CN201620188274.2U patent/CN205510006U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811948A (en) * | 2016-03-11 | 2016-07-27 | 深圳市安保科技有限公司 | Switching circuit, switching method and medical equipment |
| CN105811948B (en) * | 2016-03-11 | 2019-08-16 | 深圳市安保科技有限公司 | On/off circuit, method for start-up and shutdown and Medical Devices |
| CN111198527A (en) * | 2020-01-15 | 2020-05-26 | 北京实干兴邦科技有限公司 | FPGA-based GPIO output state control device, control method and application |
| CN111198527B (en) * | 2020-01-15 | 2021-03-30 | 北京实干兴邦科技有限公司 | FPGA-based GPIO output state control device, control method and application |
| CN114546085A (en) * | 2020-11-24 | 2022-05-27 | 上海西门子医疗器械有限公司 | Power supply control module and system of double computers and medical imaging equipment |
| CN114546085B (en) * | 2020-11-24 | 2024-03-26 | 上海西门子医疗器械有限公司 | Dual-computer power control module, system and medical imaging equipment |
| CN113467313A (en) * | 2021-07-15 | 2021-10-01 | 上海市特种设备监督检验技术研究院 | Startup and shutdown circuit for battery power supply and startup and shutdown time sequence design method |
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Effective date of registration: 20190328 Address after: 410000 No. 158 Jinhai Road, Tongsheng Street, Yuhua District, Changsha City, Hunan Province Patentee after: Hunan Cofoe Medical Technology Development Co., Ltd. Address before: 518052 East Shenzhen Security Technology Co., Ltd. on the third floor of Block A, Nanyuan Road, Nanyuan Industrial Park, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Ambulanc Tech Co., Ltd. |
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| CP03 | Change of name, title or address |
Address after: No. 816, Zhenhua Road, Yuhua District, Changsha City, Hunan Province Patentee after: Kefu Medical Technology Co., Ltd Address before: 410000 Hunan province Changsha Yuhua District, tosuc Street 158 Jinhai Road Patentee before: HUNAN COFOE MEDICAL TECHNOLOGY DEVELOPMENT Co.,Ltd. |