CN104935029B - Charge control method, charge control system and portable electrocardiogram machine - Google Patents
Charge control method, charge control system and portable electrocardiogram machine Download PDFInfo
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- CN104935029B CN104935029B CN201510230487.7A CN201510230487A CN104935029B CN 104935029 B CN104935029 B CN 104935029B CN 201510230487 A CN201510230487 A CN 201510230487A CN 104935029 B CN104935029 B CN 104935029B
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Abstract
A kind of charge control method, including step：Obtain charging signals and Regulate signal；Determine whether to charge according to charging signals；During charging, it is the first electric current or the second electric current to adjust charging current according to Regulate signal；Wherein, the first electric current is less than the second electric current.A kind of charge control system and portable electrocardiogram machine, including charge control module, current regulating module and system control module.The charge control method, charge control system and portable electrocardiogram machine are according to charging signals, it is determined whether charge, avoid generating larger heat.During charging, it is smaller first electric current or the second larger electric current to adjust charging current according to Regulate signal, avoids being charged with larger charging current when start and non-print state and making power consumption larger, generates more heat transfer.In this way, the power consumption peak time for the portable electrocardiogram machine that staggers, the reliability of portable electrocardiogram machine is improved.
Description
Technical field
The present invention relates to Charge Management field more particularly to a kind of charge control method, charge control systems and portable
Electrocardiograph.
Background technology
The bioelectrical signals (electrocardiosignal) that portable electrocardiogram machine can generate myocardial activation during cardiomotility are remembered automatically
Record is got off, and is made of host, conducting wire, power supply, printer, charging circuit etc..Wherein, the design of charging circuit is mainly by filling
Electrical chip management.Powerful managing chip is of high cost, and the load of complete machine AC power is high, and charge mode is single.For volume
Small portable electrocardiogram machine, such as three electrocardiographs, entire machine closure is high, under some cases, should such as print and
Heat is big in the case of charging, during charging, heat dissipation is difficult, therefore its poor reliability.
The content of the invention
Based on this, it is necessary to provide a kind of charge control method for the reliability that can improve portable electrocardiogram machine, fill
Electric control system and portable electrocardiogram machine.
A kind of charge control method, including step：
Obtain charging signals and Regulate signal；
Determine whether to charge according to charging signals；
During charging, it is the first electric current or the second electric current to adjust charging current according to Regulate signal；
Wherein, the first electric current is less than the second electric current.
In one of the embodiments,
The step of acquisition charging signals and Regulate signal, it is specially：
Judge the state of portable electrocardiogram machine：
When portable electrocardiogram machine is in start and print state, charging signals are the first charging signals；
When portable electrocardiogram machine is in start and non-print state, charging signals are the second charging signals, adjust letter
Number be the first Regulate signal；
When portable electrocardiogram machine is in off-mode, charging signals be the second charging signals, Regulate signal second
Regulate signal；
Described the step of determining whether to charge according to charging signals, it is specially：When charging signals are the first charging signals,
It does not charge to charging unit, when charging signals are the second charging signals, charges to charging unit；
During the charging, the step of charging current is the first electric current or the second electric current is adjusted according to Regulate signal, is specially：
In a charging situation, when Regulate signal is the first Regulate signal, control and charge by charging unit of the first electric current, believe when adjusting
Number be the second Regulate signal when, control using the second electric current for charging unit charging.
A kind of charge control system, including charge control module, current regulating module and system control module；The charging
Control module connects the current regulating module, the current regulating module, charging unit and charge power supply, the system control
Module is also connected with the current regulating module, and the current regulating module is also connected with the charging unit；
The system control module for providing charging signals for the charge control module, and is the current regulation
Module provides Regulate signal；
The charge control module, the charging signals for being provided according to the system control module determine whether to fill
Electricity, and when charging, by the voltage output that the charge power supply provides to the current regulating module；
The current regulating module, for the Regulate signal provided according to the system control module, described in adjusting
The charging current of charging unit is the first electric current or the second electric current；Wherein, the first electric current is less than the second electric current.
In one of the embodiments,
It is described in the current regulating module provides when the current regulating module receives the system control module
When Regulate signal is the first Regulate signal, the current regulating module is controlled to charge by the charging unit of the first electric current；
It is described in the current regulating module provides when the current regulating module receives the system control module
When Regulate signal is the second Regulate signal, the current regulating module is controlled to charge by the charging unit of the second electric current.
In one of the embodiments,
When the system control module is that the charging signals that the charge control module provides are the first charging signals
When, the charge control module does not charge to the charging unit；
When it is the first charging signals that the system control module, which is the charging signals that charge control module provides, institute
Charge control module is stated to charge to the charging unit.
In one of the embodiments,
When portable electrocardiogram machine is in start and print state, the system control module is the charge control mould
The charging signals that block provides are the first charging signals；
When portable electrocardiogram machine is in start and non-print state, the system control module is the charge control
The charging signals that module provides are for the Regulate signal that the current regulating module provides for the second charging signals
One Regulate signal；
When portable electrocardiogram machine is in off-mode, the system control module provides for the charge control module
The charging signals for the second charging signals, be the second adjusting letter for the Regulate signal that the current regulating module provides
Number.
In one of the embodiments,
It is defeated that the system control module includes charging signals output terminal, Regulate signal output terminal and the connection charging signals
The level conversion of outlet and the charge control module puts circnit NOT；The Regulate signal output terminal connects the current regulation mould
Block；
The level conversion puts circnit NOT for carrying out the charging signals output terminal and the institute of the system control module
The level conversion between charge control module is stated, makes to be connected to the level conversion and puts the charge control module on circnit NOT and fill
The voltage of electrical signal corresponds with the charge control module and the operating voltage of the charging signals output terminal；It is described
Level conversion puts circnit NOT and is additionally operable to put the signal of the charging signals output terminal output of the system control module instead, then
It exports to the charge control module.
In one of the embodiments, the charge control module includes charging chip, first switch pipe, second switch
Pipe, diode, inductance and storage capacitor；The storage capacitor is described by the current regulating module and the inductance connection
Storage capacitor is also grounded.
The DC voltage input end of the charging chip connects the charge power supply；
The shut-off control signal of the charging chip connects the system control module, receives charging signals；
First charge switch pipe driving signal output end of the charging chip connects the first switch pipe；
Second charge switch pipe driving signal output end of the charging chip connects the second switch pipe；
When the charging that the shut-off control signal of the charging chip of the charge control module receives
When signal is low level, the first charge switch pipe driving signal output end of the charging chip and second charging are opened
Pipe driving signal output end is closed not export；
When the charging that the shut-off control signal of the charging chip of the charge control module receives
When signal is high level, the first charge switch pipe driving signal output end of the charging chip and second charging are opened
It closes the timesharing of pipe driving signal output end and turns on the first switch pipe and the second switch pipe, then pass through the diode, institute
It states inductance and the storage capacitor forms a circuit and charges to the charging unit.
In one of the embodiments, the current regulating module is adopted including on-off circuit, current regulating switch pipe, first
Sample resistance and the second sampling resistor；
First sampling resistor is connected with second sampling resistor, and is passed through described in the first sampling resistor connection
Charge control module connects the charging unit by second sampling resistor；
The current regulating switch pipe is in parallel with second sampling resistor；
The on-off circuit connects the current regulating switch pipe, controls whether the current regulating switch pipe turns on, makes
The second sampling resistor short circuit.
A kind of portable electrocardiogram machine, including above-mentioned charge control system.
Above-mentioned charge control method, charge control system and portable electrocardiogram machine are according to charging signals, it is determined whether fill
Electricity avoids generating larger heat.During charging, it is smaller first electric current or larger to adjust charging current according to Regulate signal
Second electric current is avoided being charged with larger charging current when start and non-print state and making power consumption larger, be generated more
Heat.In this way, the power consumption peak time for the portable electrocardiogram machine that staggers, the reliability of portable electrocardiogram machine is improved.
Description of the drawings
Fig. 1 is a kind of flow chart of embodiment of charge control method in the present invention；
Fig. 2 is a kind of structure diagram of embodiment of charge control system in the present invention；
Fig. 3 is the partial circuit diagram of the system control module in Fig. 2；
Fig. 4 is a kind of partial circuit diagram of a part for embodiment of charge control system in the present invention；
Fig. 5 is the partial circuit diagram of another part of the charge control system of Fig. 4.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " or/and " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
As shown in Figure 1, a kind of charge control method of embodiment, including step：
S110：Obtain charging signals and Regulate signal.
Step S110 is specifically, judge the state of portable electrocardiogram machine：When portable electrocardiogram machine is in start and beats
During print state, charging signals are the first charging signals, can not be that charging unit charges at this time；
When portable electrocardiogram machine is in start and non-print state, charging signals are the second charging signals, chargeable；
Regulate signal is the first Regulate signal, can be that charging unit charges at this time, and can be filled using smaller first electric current as charging unit
Electricity；
When portable electrocardiogram machine is in off-mode, charging signals be the second charging signals, Regulate signal second
Regulate signal can be that charging unit charges at this time, and the second electric current that can be larger charges in charging unit.
In the present embodiment, the first Regulate signal is high level, and the second Regulate signal is low level.It is to be appreciated that
Can be that the first Regulate signal is low level, the second Regulate signal is high level.
In the present embodiment, the first charging signals are low level, and the second charging signals are high level.It is to be appreciated that
Can be that the first charging signals are high level, the second charging signals are low level.
S130：Determine whether to charge according to charging signals.
Step S130 is specially：When charging signals are the first charging signals, do not charge to charging unit.Work as charging
When signal is the second charging signals, charge to charging unit.
More specifically, when charging signals are the first charging signals, output voltage is turned off, charging unit is not filled
Electricity.When charging signals are the second charging signals, voltage that charge power supply is provided is converted into output voltage, and is filled to charging
It puts and charges.
When charging signals are the first charging signals, represent that portable electrocardiogram machine is in start and print state, it can not
It charges for charging unit.At this point, shut-off output voltage, does not charge to charging unit.And when charging signals charge for second
During signal, represent that portable electrocardiogram machine can be that charging unit charges in start and non-print state or in off-mode.
At this point, the voltage that charge power supply is provided, is converted into output voltage, and charges to charging unit.
S150：During charging, it is the first electric current or the second electric current to adjust charging current according to Regulate signal；
Wherein, the first electric current is less than the second electric current.
When the charging signals got be the second charging signals, when charging to charging unit, will also according to adjust believe
Number adjust charging current.It is to be appreciated that if step S130 is determined as not charging, S150 can be omitted.
Specifically, step S150 is included specifically, in a charging situation, when Regulate signal is the first Regulate signal, controlling
System charges by charging unit of the first electric current；When Regulate signal is the second Regulate signal, controls and filled using the second electric current to charge
Put charging.
When Regulate signal is the first Regulate signal, represent that portable electrocardiogram machine is in start and non-print state, though
Open state is so maintained to need certain power consumption, but in non-print state, power consumption will not be excessively high, can charge for it.Start
Working condition is maintained to be also required to certain power consumption, certain heat can be generated, controlled using smaller first electric current as charging unit
It charges, makes charging lower power consumption, it can be to avoid start and during non-print state with larger charging current is charged and makes work(
Consume larger, generation more heat transfer.When Regulate signal is the second Regulate signal, represent that portable electrocardiogram machine is in shutdown shape
State, portable electrocardiogram machine do not have other power consumptions, it is only necessary to charge, at this point, controlling using the second larger electric current as charging
Device charges, and charging unit can be made fully charged as early as possible, and excessive power consumption is not required, and will not generate excessive heat.
When due to being that portable electrocardiogram machine power consumption is larger during print state, in start and print state, charge
Signal is the first charging signals, not chargeable；Otherwise, charging signals are the second charging signals, chargeable, avoid generating larger
Heat.Open state is maintained to need to expend certain power consumption, therefore in start and non-print state, Regulate signal is adjusted for first
Signal is charged with smaller first electric current.And in off-mode, the power consumption for maintaining start need not be expended, adjusts letter at this time
Number for the second Regulate signal, charged with the second larger electric current.In this way, the power consumption peak time for the portable electrocardiogram machine that staggers,
Improve the reliability of portable electrocardiogram machine.
Above-mentioned charge control method, according to the charging signals got, it is determined whether charge, avoid generating larger heat
Amount.During charging, according to Regulate signal adjust charging current be smaller first electric current or the second larger electric current, avoid start and
It is charged during non-print state with larger charging current and makes power consumption larger, generate more heat transfer.In this way, it is portable to stagger
The power consumption peak time of electrocardiograph improves the reliability of portable electrocardiogram machine.
As shown in Fig. 2, a kind of charge control system of embodiment, including charge control module 110, current regulating module
130 and system control module 150.Charge control module 110 connects current regulating module 130, current regulating module 130, charges
Device (figure is not marked) and charge power supply (not shown), system control module 150 are also connected with current regulating module 130, current regulation
Module 130 is also connected with charging unit.
System control module 150 for providing charging signals for charge control module 110, and is current regulating module 130
Regulate signal is provided.
Specifically, when portable electrocardiogram machine is in start and print state, system control module 150 is charge control
The charging signals that module 110 provides are the first charging signals；When portable electrocardiogram machine is in start and non-print state, it is
Control module 150 of uniting is that the charging signals that charge control module 110 provides are the second charging signals, is current regulating module 130
The Regulate signal of offer is the first Regulate signal；When portable electrocardiogram machine is in off-mode, system control module 150 is
The charging signals that charge control module 110 provides are the second charging signals, and system control module 150 is current regulating module 130
The Regulate signal provided is the second Regulate signal.
In the present embodiment, the first Regulate signal is high level, and the second Regulate signal is low level.It is to be appreciated that
Can be that the first Regulate signal is low level, the second Regulate signal is high level.In the present embodiment, the first charging signals are low
Level, the second charging signals are high level.It is to be appreciated that it is that the first charging signals are high level, second, which charges, believes
Number be low level.
When due to being that portable electrocardiogram machine power consumption is larger during print state, in start and print state, system
Control module 150 is that the charging signals that charge control module 110 provides are the first charging signals, not chargeable, and otherwise, charge letter
It is chargeable number for the second charging signals, it avoids generating larger heat.In this way, the power consumption peak for the portable electrocardiogram machine that staggers
Period improves the reliability of portable electrocardiogram machine.
Charge control module 110, the charging signals for being provided according to system control module 150 determine whether to charge, and
When charging, by the voltage output that charge power supply provides to current regulating module 130.
When it is the first charging signals that system control module 150, which is the charging signals that charge control module 110 provides, charge
Control module 110 does not charge to charging unit.When system control module 150 is the charging that charge control module 110 provides
When signal is the second charging signals, charge control module 110 charges to charging unit.
Specifically, when system control module 150 is that the charging signals that charge control module 110 provides are the first charging signals
When, charge control module 110 turns off output voltage, does not charge to charging unit.When system control module 150 is controlled to charge
When the charging signals that molding block 110 provides are the second charging signals, voltage that charge control module 110 provides charge power supply,
Output voltage is converted into, and is charged through current regulating module 130 to charging unit.
When it is the first charging signals that system control module 150, which is the charging signals that charge control module 110 provides, represent
Portable electrocardiogram machine is in start and print state, and system control module 150 can not be that charging unit charges.At this point, it charges
Control module 110 turns off output voltage, does not charge to charging unit.And when system control module 150 is charge control mould
Block 110 provide charging signals be the second charging signals when, represent portable electrocardiogram machine be in start and non-print state or
Can be that charging unit charges in off-mode.At this point, the voltage that charge control module 110 provides charge power supply, is converted into
Output voltage, and charge through current regulating module 130 to charging unit.
Current regulating module 130 for the Regulate signal provided according to system control module 150, adjusts charging unit
Charging current is the first electric current or the second electric current.Wherein, the first electric current is less than the second electric current.
It is the Regulate signal that current regulating module 130 provides when current regulating module 130 receives system control module 150
For the first Regulate signal when, current regulating module 130 control using the first electric current as charging unit charge；Work as current regulating module
130 when to receive system control module 150 be that Regulate signal that current regulating module 130 provides is the second Regulate signal, electric current
Adjustment module 130 is controlled to charge by charging unit of the second electric current.
It is the Regulate signal that current regulating module 130 provides when current regulating module 130 receives system control module 150
For the first Regulate signal when, represent portable electrocardiogram machine be in start and non-print state, although maintain open state need
Certain power consumption, but in non-print state, power consumption will not be excessively high, can charge for it.Start maintains working condition to be also required to
Certain power consumption can generate certain heat, and current regulating module 130 is controlled is filled using smaller first electric current as charging unit
Electricity makes charging lower power consumption, avoids being charged with larger charging current when start and non-print state and making power consumption larger,
Generate more heat transfer.It is the tune that current regulating module 130 provides when current regulating module 130 receives system control module 150
When section signal is the second Regulate signal, represent that portable electrocardiogram machine is in off-mode, portable electrocardiogram machine is not other
Power consumption, it is only necessary to it charges, charges at this point, current regulating module 130 is controlled by charging unit of the second larger electric current, it can
So that charging unit is fully charged as early as possible, and is not required excessive power consumption, excessive heat will not be generated.
System control module 150 includes charging signals output terminal, Regulate signal output terminal and connection charging signals output terminal
Circnit NOT is put with the level conversion of charge control module 110 (see Fig. 3).Regulate signal output terminal connects current regulating module 130.
Level conversion puts circnit NOT for carrying out between the charging signals output terminal of system control module 150 and charge control module 110
Level conversion, make the voltage for being connected to charge control module 110 and charging signals output terminal that level conversion is put on circnit NOT
Correspond with charge control module 110 and the operating voltage of charging signals output terminal.Level conversion is put circnit NOT and is additionally operable to
The signal of the charging signals output terminal output of system control module 150 is put instead, then is exported to charge control module 110.
Specifically, referring to Fig. 3, level conversion, which puts circnit NOT, includes phase inverter U3, resistance R29 and resistance R13.System control
Molding block 150 further includes operating voltage output terminal, the operating voltage input terminal VDD of connection reverser U3.Charging signals output terminal,
R29, U3, R13 and charge control module 110 are sequentially connected in series.Specifically, the input terminal Y connection resistance R29 of reverser U3, resistance
R29 connection charging signals output terminals.The free end NC of reverser U3 is vacantly set.The ground terminal GND ground connection of reverser U3.Reversely
Output terminals A connection the resistance R13, resistance R13 of device U3 is also connected with charge control module 110.In the present embodiment, reverser U3 has
Body model SN74AHC1G14.
As shown in Figure 4 and Figure 5, charge control module 110 includes charging chip U2, storage capacitor C9, switching tube Q1, first
Charging control switch pipe Q2, the second charging control switch pipe Q2, inductance L1 and diode D3.
When the charging letter that the shut-off control signal ACP/nSHDN of the charging chip U2 of charge control module 110 is received
Number be the second charging signals when, the first charge switch pipe driving signal output end TGATE of charging chip U2 and second charge open
Pipe driving signal output end BGATE timesharing conducting first switch pipe Q1 and second switch pipe Q2 is closed, then passes through diode D3, inductance
L1 and storage capacitor C9 forms a circuit and charges to charging unit.In the present embodiment, charging chip U2 concrete models are
LTC4006-2.Switching tube Q1 and the first charging control switch pipe Q2 concrete models are SI4835BDY.Second charging control switch
Pipe Q2 concrete models are SI4412ADY.Diode D3 concrete models are B540C.
Wherein, the DC voltage input end DCin connection charge power supplies of charging chip U2.More specifically, charge power supply provides
The DC voltage of 15V.
The shut-off control signal ACP/nSHDN connections system control module 150 of charging chip U2, to receive the letter that charges
Number.Specifically, the shut-off control signal ACP/nSHDN of charging chip U2 is put by the level conversion of system control module 150
Circnit NOT connects the charging signals output terminal of system control module 150.Further, charge control module 110 further includes resistance
R4.The shut-off control signal ACP/nSHDN of charging chip U2 is also connected with resistance R4, defeated from system control module 150 to pull up
The voltage entered.
First charge switch pipe driving signal output end TGATE connection the first charging control switch pipes Q2 of charging chip U2
Grid.Second charge switch pipe driving signal output end BGATE connection the second charging control switch pipes Q2 of charging chip U2
Grid.
Further, charge control module 110 further includes capacitance C4, resistance R2, capacitance C1 and resistance R1.Capacitance C4 and electricity
The common port for hindering R2 connects the source electrode of the first charging control switch pipe Q2, source electrode and the capacitance C1 of the first charging control switch pipe Q2
Common port be connected to the charging current detection amplifier inverting input CLN of charging chip U2.Capacitance C4 is also grounded.Capacitance C1
Charging current detection amplifier the normal phase input end CLP, resistance R1 and resistance of charging chip U2 are connected with the common port of resistance R1
The common port of R2 passes through switching tube Q1 connection charge power supplies.Further, the drain electrode of switching tube Q1 is connected with charge power supply, grid
Pole is connected with the charging voltage switching tube driving signal input INFET of charging chip U2, and source electrode is with resistance R1's and resistance R2
Common port connects.It is to be appreciated that switching tube Q1 can be omitted, and charge power supply directly with resistance R1 and the common port of resistance R2
Connection, the charging voltage switching tube driving signal input INFET of charging chip U2 are vacantly set.
Further, charge control module 110 further includes capacitance C8 and resistance R11.First charging control switch pipe Q2's
Drain electrode is connected the cathode of diode D3, resistance R11 and inductance L1 with the common port of the drain electrode of the second charging control switch pipe Q2.Electricity
Resistance R11 is also connected with capacitance C8, capacitance C8, the anode of diode D3, the source electrode and charging chip of the second charging control switch pipe Q2
The ground terminal PGND of U2 is connected with each other, and is grounded.The common port of the current amplifier input terminal CSP of inductance L1 and charging chip U2
It is connected to current regulating module 130.Storage capacitor C9 is connected by current regulating module 130 with inductance L1, and storage capacitor C9 is also
Ground connection.
In this way, when what the shut-off control signal ACP/nSHDN of the charging chip U2 of charge control module 110 was received fills
When electric signal is low level, the first charge switch pipe driving signal output end TGATE of charging chip U2 and the second charge switch
Pipe driving signal output end BGATE is not exported, and charge control module 110 is made not charge to charging unit.And when charge control mould
When the charging signals that the shut-off control signal ACP/nSHDN of the charging chip U2 of block 110 is received are high level, charging chip
The first charge switch pipe driving signal output end TGATE of U2 and the second charge switch pipe driving signal output end BGATE timesharing
The first charging control switch pipe Q2 and the second charging control switch pipe Q2 are turned on, then passes through diode D3, inductance L1 and energy storage electricity
Hold C9 and form a circuit, charge to charging unit.
The battery voltage detection input terminal BAT connection charging units of charging chip U2.The charged state of charging chip U2 refers to
Show that output terminal nCHG is connected to system control module 150, inform system present charge state, with provide inform user currently whether
For charged state.More specifically, charge control module 110 further includes resistance R3.The charged state instruction output of charging chip U2
End nCHG is connected to system control module 150 by resistance R3, with the voltage of pull-up output to system control module 150.
Further, charge control module 110 further include capacitance C7, resistance R2, resistance R10, resistance R12, capacitance C11 and
Resistance R5.The image current output terminal Imon connection capacitances C7 of charging chip U2；Charging time sets end RT connection resistance R10；
Internal loop control signal input Ith connection resistance R12；Resistance R12 is also connected with capacitance C11；Capacitance C7, resistance R10, capacitance
The ground terminal GND of R12 and charging chip U2 is connected with each other, and is grounded.The battery temperature test side NTC connections electricity of charging chip U2
R5 is hindered, resistance R5 is also connected with the common port of charge power supply and capacitance C2, and capacitance C2 is also grounded.
Further, charge control module 110 further includes filter capacitor C10.Filter capacitor C10 connection current adjusting modules
The common port of 130 and storage capacitor C9, filter capacitor C10 are also grounded, are filtered.It is to be appreciated that filter capacitor C10 can be with
It omits.
It is opened referring to Fig. 5, current regulating module 130 includes the first sampling resistor R7, the second sampling resistor R8, current regulation
Close pipe U54 and on-off circuit.First sampling resistor R7 connects with the second sampling resistor R8, and passes through the first sampling resistor R7 connections
Charge control module 110 passes through the second sampling resistor R8 connection charging units.The sampling electricity of current regulating switch pipe U54 and second
It is in parallel to hinder R8.On-off circuit connects current regulating switch pipe U54, and whether control current regulating switch pipe U54 turns on, and makes second to adopt
Sample resistance R8 short circuits.It is charged in this way, controlling using the first electric current or the second electric current as charging unit.In the present embodiment, electric current tune
It is SI4435 to save switching tube U54 concrete models.
Further, on-off circuit includes the first adjusting switch pipe Q12, the second adjusting switch pipe Q13.First adjusting switch
Whether pipe Q12, the second adjusting switch pipe Q13 turn on according to current regulating signal co- controlling current regulating switch pipe U54, make
Two sampling resistor R8 short circuits, so as to adjust electric current.Specifically, the inductance L1 of the first sampling resistor connection charge control module 110.
In the present embodiment, the first sampling resistor R7 is identical with the resistance value of the second sampling resistor R8.All it is specifically 0.1 ohm.First adjusts
It is 2N7002 to save switching tube Q12 and the second adjusting switch pipe Q13 concrete models.
Further, on-off circuit further includes resistance R71, resistance R72, resistance R67, resistance R73, resistance R74 and resistance
R68.The Regulate signal output terminal of resistance R72 connections system control module 150.Resistance R72 is connected electricity with the common port of resistance R67
R71 is hindered, resistance R71 is also connected with the grid of the first adjusting switch pipe Q12.The source electrode ground connection of first adjusting switch pipe Q12, first adjusts
Save the common port of drain electrode connection resistance R73, the resistance R74 of switching tube Q12 and the grid of the second adjusting switch pipe Q13.Resistance R73
It is also connected with charge power supply；Resistance R74 is also grounded.The source electrode ground connection of second adjusting switch pipe Q13；Second adjusting switch pipe Q13's
Drain electrode is connected the grid of current regulating switch pipe U54 with the common port of resistance R68.The source electrode of current regulating switch pipe U54 and electricity
Hinder the common port of common port connection the first sampling resistor R7 and the second sampling resistor R8 of R68.The leakage of current regulating switch pipe U54
Pole is not connected to the electricity of charging unit and charging chip U2 with the second sampling resistor R8 with the common port of resistance R7 one end being connected
The common port of cell voltage detection input BAT.
In this way, when the Regulate signal that the resistance R72 of current regulating module 130 is received is the first Regulate signal, first
The grid voltage of adjusting switch pipe Q12 is more than the source voltage of the first adjusting switch pipe Q12, therefore the first adjusting switch pipe Q12 is led
It is logical.Therefore, the grounded-grid of the drain electrode of the first adjusting switch pipe Q12 and switching tube 13, at this point, the second adjusting switch pipe Q13
Grid voltage is not more than the source voltage of the second adjusting switch pipe Q13, therefore the second adjusting switch pipe Q13 is disconnected.In this way, electric current tune
The grid of switching tube U54 is saved as high level, but it is not more than the source voltage of current regulating switch pipe U54, therefore current regulation is opened
Pipe U54 is closed to disconnect.Second sampling resistor R8 is not short-circuited, and can reduce charging current, is reduced charging lower power consumption, is avoided starting shooting
And it avoids generating excessive heat so that larger current charges and makes power consumption larger during non-print state.Particularly, when the second sampling electricity
When resistance R8 is identical with the first sampling resistor R7 resistance values, half when charging current is short-circuited for the second sampling resistor R8 can drop
The charging power consumption being at half avoids being charged with larger charging current when start and non-print state and making power consumption larger,
Generate excessive heat.It is to be appreciated that the first sampling resistor R7 and the second sampling resistor R8 can be set as needed as not
Same resistance value.In conclusion when the Regulate signal that the resistance R72 of current regulating module 130 is received is the first Regulate signal the
One adjusting switch pipe Q12 is turned on, and the second adjusting switch pipe Q13 is disconnected, and current regulating switch pipe U54 is disconnected, using resistance R8 not
It is short-circuited, so reduces charging current, avoid start and during non-print state with larger charging current is charged and makes work(
It consumes larger, generates excessive heat.
Opposite, when the Regulate signal that the resistance R72 of current regulating module 130 is received is the second Regulate signal, the
One adjusting switch pipe Q12 is disconnected, the second adjusting switch pipe Q13 conductings, current regulating switch pipe U54 conductings.Second sampling resistor
R8 is short-circuited, big when the charging current of Gu Chong electricity Zhuan Zhichu is not short-circuited than sampling resistor.Due to portable electrocardiogram machine at this time
In off-mode, current regulating module 130 does not reduce charging current, and charging unit can be made fully charged as early as possible, and need not
Excessive power consumption will not generate excessive heat.
Above-mentioned charge control system has Three models.When portable electrocardiogram machine is in off-mode, can charge,
It is shutdown charge mode.At this point, since it does not have other power consumptions, excessive heat will not be generated, does not reduce charging current at this time, it can
So that charging unit is fully charged as early as possible, and is not required excessive power consumption, excessive heat will not be generated.When portable electrocardiogram machine is in
Start and print state, it is not possible to charge, be not charge mode of starting shooting.At this point, printing inherently needs larger power consumption, therefore set
For non-rechargeabel pattern, with the power consumption peak time for the portable electrocardiogram machine that staggers, avoid generating larger heat, improve just
Take the reliability of formula electrocardiograph；When portable electrocardiogram machine be in start and non-print state, can charge, be start charge
Pattern.Although at this point, start, in non-print state, power consumption will not be excessively high, therefore can charge for it.But to avoid work(
Consume it is excessive cause heat excessive, charging current need to be reduced, to reduce power consumption.
The present invention also provides a kind of portable electrocardiogram machine, which includes above-mentioned charge control system.
The charge control module 110 of above-mentioned charge control system and portable electrocardiogram machine is according to system control module 150
The charging signals of offer by the voltage output that charge power supply provides to current regulating module 130, are started shooting in portable electrocardiogram machine
And during print state, without charging, avoid generating larger heat.Current regulating module is carried according to system control module 150
The Regulate signal of confession adjusts the charging current of charging unit, avoid start and during non-print state with larger charging current into
Row charges and makes power consumption larger, generates more heat transfer.In this way, the power consumption peak time for the portable electrocardiogram machine that staggers, improves just
Take the reliability of formula electrocardiograph.
Above example only expresses the several embodiments of the present invention, and description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, multiple modification and improvement can also be made, these belong to the protection model of the present invention
It encloses.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of charge control method, which is characterized in that including step：
Obtain charging signals and Regulate signal；
Determine whether to charge according to charging signals；
During charging, it is the first electric current or the second electric current to adjust charging current according to Regulate signal；
Wherein, the first electric current is less than the second electric current；
The step of acquisition charging signals and Regulate signal, it is specially：
Judge the state of portable electrocardiogram machine：
When portable electrocardiogram machine is in start and print state, charging signals are the first charging signals；
When portable electrocardiogram machine is in start and non-print state, charging signals are the second charging signals, and Regulate signal is
First Regulate signal；
When portable electrocardiogram machine is in off-mode, charging signals are the second charging signals, and Regulate signal is adjusted for second
Signal.
2. charge control method according to claim 1, which is characterized in that
Described the step of determining whether to charge according to charging signals, it is specially：It is not right when charging signals are the first charging signals
Charging unit charges, and when charging signals are the second charging signals, charges to charging unit；
During the charging, the step of charging current is the first electric current or the second electric current is adjusted according to Regulate signal, is specially：It is filling
In the case of electricity, when Regulate signal is the first Regulate signal, controls and charge by charging unit of the first electric current, when Regulate signal is
During the second Regulate signal, control and charge by charging unit of the second electric current.
3. a kind of charge control system, which is characterized in that control mould including charge control module, current regulating module and system
Block；The charge control module connects the current regulating module, the system control module, charging unit and charge power supply,
The system control module is also connected with the current regulating module, and the current regulating module is also connected with the charging unit；
The system control module for providing charging signals for the charge control module, and is the current regulating module
Regulate signal is provided；
The charge control module, the charging signals for being provided according to the system control module determine whether to charge,
And when charging, by the voltage output that the charge power supply provides to the current regulating module；
The current regulating module for the Regulate signal provided according to the system control module, adjusts the charging
The charging current of device is the first electric current or the second electric current；Wherein, the first electric current is less than the second electric current；
When portable electrocardiogram machine is in start and print state, the system control module carries for the charge control module
The charging signals supplied are the first charging signals；
When portable electrocardiogram machine is in start and non-print state, the system control module is the charge control module
The charging signals provided are the second charging signals, and the Regulate signal provided for the current regulating module is the first tune
Save signal；
When portable electrocardiogram machine is in off-mode, institute that the system control module provides for the charge control module
Charging signals are stated as the second charging signals, the Regulate signal provided for the current regulating module is the second Regulate signal.
4. charge control system according to claim 3, which is characterized in that
It is the adjusting that the current regulating module provides when the current regulating module receives the system control module
When signal is the first Regulate signal, the current regulating module is controlled to charge by the charging unit of the first electric current；
It is the adjusting that the current regulating module provides when the current regulating module receives the system control module
When signal is the second Regulate signal, the current regulating module is controlled to charge by the charging unit of the second electric current.
5. charge control system according to claim 3, which is characterized in that
When it is the first charging signals that the system control module, which is the charging signals that the charge control module provides, institute
Charge control module is stated not charge to the charging unit；
It is described to fill when it is the first charging signals that the system control module, which is the charging signals that charge control module provides,
Electric control module charges to the charging unit.
6. charge control system according to claim 4 or 5, which is characterized in that
The system control module includes charging signals output terminal, Regulate signal output terminal and the connection charging signals output terminal
Circnit NOT is put with the level conversion of the charge control module；The Regulate signal output terminal connects the current regulating module；
The level conversion is put circnit NOT and is filled for carrying out the charging signals output terminal of the system control module with described
Level conversion between electric control module makes to be connected to the level conversion and put the charge control module on circnit NOT and charge to believe
The voltage of number output terminal corresponds with the charge control module and the operating voltage of the charging signals output terminal；The level
Conversion puts circnit NOT and is additionally operable to put the signal of the charging signals output terminal output of the system control module instead, then exports
To the charge control module.
7. charge control system according to claim 5, which is characterized in that the charge control module includes charging core
Piece, first switch pipe, second switch pipe, diode, inductance and storage capacitor；The storage capacitor passes through the current regulation mould
Block and the inductance connection, the storage capacitor are also grounded；
The DC voltage input end of the charging chip connects the charge power supply；
The shut-off control signal of the charging chip connects the system control module, receives charging signals；
First charge switch pipe driving signal output end of the charging chip connects the first switch pipe；
Second charge switch pipe driving signal output end of the charging chip connects the second switch pipe；
When the charging signals that the shut-off control signal of the charging chip of the charge control module receives
For low level when, the first charge switch pipe driving signal output end of the charging chip and the second charge switch pipe
Driving signal output end does not export；
When the charging signals that the shut-off control signal of the charging chip of the charge control module receives
For high level when, the first charge switch pipe driving signal output end of the charging chip and the second charge switch pipe
Driving signal output end timesharing turns on the first switch pipe and the second switch pipe, then passes through the diode, the electricity
Sense and the storage capacitor form a circuit and charge to the charging unit.
8. charge control system according to claim 4, which is characterized in that the current regulating module includes switch electricity
Road, current regulating switch pipe, the first sampling resistor and the second sampling resistor；
First sampling resistor is connected with second sampling resistor, and connects the charging by first sampling resistor
Control module connects the charging unit by second sampling resistor；
The current regulating switch pipe is in parallel with second sampling resistor；
The on-off circuit connects the current regulating switch pipe, controls whether the current regulating switch pipe turns on, and makes described
The short circuit of second sampling resistor.
9. a kind of portable electrocardiogram machine, which is characterized in that including the charge control system described in claim 3-8 any one
System.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510230487.7A CN104935029B (en) | 2015-05-07 | 2015-05-07 | Charge control method, charge control system and portable electrocardiogram machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230487.7A CN104935029B (en) | 2015-05-07 | 2015-05-07 | Charge control method, charge control system and portable electrocardiogram machine |
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| Publication Number | Publication Date |
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| CN104935029B true CN104935029B (en) | 2018-05-29 |
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| CN107294187A (en) * | 2017-08-18 | 2017-10-24 | 胡笑峰 | electronic device charging system with display screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761122A (en) * | 2004-10-11 | 2006-04-19 | 佛山市顺德区顺达电脑厂有限公司 | Charging capable of adjusting charging current, and adjusting method |
| CN101489036A (en) * | 2008-01-15 | 2009-07-22 | 华晶科技股份有限公司 | Digital camera and method for classified pick-up image storage based on charging state |
| CN101636893A (en) * | 2007-03-23 | 2010-01-27 | 索尼爱立信移动通讯股份有限公司 | Charger device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8638063B2 (en) * | 2010-10-13 | 2014-01-28 | Tesla Motors, Inc. | AC current control of mobile battery chargers |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761122A (en) * | 2004-10-11 | 2006-04-19 | 佛山市顺德区顺达电脑厂有限公司 | Charging capable of adjusting charging current, and adjusting method |
| CN101636893A (en) * | 2007-03-23 | 2010-01-27 | 索尼爱立信移动通讯股份有限公司 | Charger device |
| CN101489036A (en) * | 2008-01-15 | 2009-07-22 | 华晶科技股份有限公司 | Digital camera and method for classified pick-up image storage based on charging state |
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