CN107202962A - VMC controller is gathered and evaluation method with electric quantity of lithium battery - Google Patents
VMC controller is gathered and evaluation method with electric quantity of lithium battery Download PDFInfo
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- CN107202962A CN107202962A CN201710438595.2A CN201710438595A CN107202962A CN 107202962 A CN107202962 A CN 107202962A CN 201710438595 A CN201710438595 A CN 201710438595A CN 107202962 A CN107202962 A CN 107202962A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
Gathered present invention is disclosed a kind of VMC controller with electric quantity of lithium battery and evaluation method, this method comprises the following steps：After MCU initialization is finished, ADC DMA channel is opened, and timer is opened, during ADC sampling time timing ga(u)ges, and MCU collects the voltage of lithium battery by ADC and will read each battery core voltage parameter of lithium battery and send to menu function and correlation function and handled；After menu function and correlation function are handled, judge whether the ADC sampling times are timed to by MCU and reach, reached if the ADC sampling times are not timed to, re-start and be back to menu function and correlation function processing；Reached if the ADC sampling times are timed to, MCU judges whether the charged state of lithium battery is in high level state.Technical scheme can calculate the voltage condition of current lithium battery exactly, greatly increase the accuracy that new trend controller judges the electricity precision of lithium battery demand.
Description
Technical field
Gathered the present invention relates to a kind of new trend controller with electric quantity of lithium battery and evaluation method, belong to VMC technology neck
Domain.
Background technology
With the fast development of domestic industry, environment is contaminated, and air quality is deteriorated, and haze happens occasionally, people
The quality of air is increasingly paid close attention to, and needs a good living environment, the proposition of VMC allows people to air matter
Amount sees hope.VMC refers to what is be made up of the ventilating fan that can take a breath and purify air, pipeline and some annexes
A set of independent air processing system, ventilating fan can be by outdoor live gas by filtering, purification, and is pipelined to
Interior, while the air of foul indoor is discharged outdoor.
Lithium battery is high due to its energy density, and small volume is lightweight, environment friendly and pollution-free, the remarkable advantage such as memory-less effect
Progressively turn into the first choice of energy field, lithium battery is as the power source of new trend controller in use due to cell voltage
It is not linear relationship between dump energy, working time, so it is remaining simply to use voltage sample, function to calculate
Electricity.It is typically to increase a dedicated for monitoring battery in real time in the charging of lithium battery and its protection circuit in the prior art
State I C, the chip can monitor the parameters such as voltage, electric current, discharge and recharge situation and the dump energy of battery in real time, it is possible to
These data storages are got up, and there is provided handled accordingly to MCU.This mode is adapted to mobile phone, digital camera, audio/video player
Used Deng portable electric appts, because management of these equipment to electricity is more strict.Another is to utilize external high accuracy
Leakage resistance and high-precision amplifier are examined, is obtained accurately in shorter cycle down-sampling with the faster single-chip microcomputer of arithmetic speed
Value, because VMC controller judges that demand is less accurate to the electricity precision of lithium battery, so both the above scheme is from work(
The demand of new trend controller can be met on energy, but cost is too high, loses more than gain.
The content of the invention
The purpose of the present invention is exactly to be used to solve the above-mentioned problems in the prior art there is provided a kind of new trend controller
Electric quantity of lithium battery is gathered and evaluation method.
The purpose of the present invention will be achieved by the following technical programs：VMC controller is gathered with electric quantity of lithium battery
With evaluation method, this method comprises the following steps --
S1：After MCU initialization is finished, ADC DMA channel is opened, and timer is opened, during ADC sampling time timing ga(u)ges,
MCU collects the voltage of lithium battery by ADC and will read each battery core voltage parameter of lithium battery and sends to menu function and phase
Function is closed to be handled；
S2：After menu function and correlation function are handled, judge whether the ADC sampling times are timed to by MCU and reach, if ADC
Sampling time, which is not timed to, to be reached, then re-starts and be back to menu function and correlation function processing；If the ADC sampling times determine
When reach, then MCU judge lithium battery charged state whether be in high level state；
S3：If MCU judges that the charged state of lithium battery is in high level state, display lithium battery is charging and ADC is adopted
Reset during the timing ga(u)ge of sample time；If the charged state of lithium battery is not high level state, ADC sample datas are cached
Sampling, handles the sample data that measurement is obtained with bubbling algorithm, obtains the ascending order data of a sample data, logarithm
Computing of averaging is carried out in middle sample data according to middle sequence, and then obtains metastable data, according to electric resistance partial pressure
The current voltage of ratio calculation lithium battery, then MCU contrast charging and discharging lithium battery curve map, show electric quantity of lithium battery situation and
Reset during ADC sampling time timing ga(u)ges；
S4：Corresponding judgement is made after MCU contrast charging and discharging lithium battery curve maps and is handled, when the electricity of lithium battery is shown as low
During electricity, at this moment system can send alarm, when the electricity of lithium battery is shown as normal electricity scope, the normal work of system
Make, when the electricity of lithium battery is shown as ultralow electricity, system can be closed.
Preferably, the sample data is 32 groups of data.
Preferably, the bubbling algorithm comprises the following steps --
S1：ADC buffer inlets, exponent number is counted（i）1 is put, judges that exponent number is counted（i）Whether 32 are less than, if not, judging that data change
Whether become flag bit into 0, if being not 0, then return, be such as 0, then export the array sorted, EP (end of program)；
S2：As exponent number is counted（i）Less than 32, then data change mark position 0, count（j）Set to 0, then judge to count（j）Whether
Less than 32-i, then carry out judging data cached in this way【j】Whether it is more than data cached【j+1】, such as larger than, then data change mark
Position 1, it is data cached【j】With caching array【j+1】Exchange, count（j）From increasing 1, exponent number counting is returned to（i）It is such as small from increasing 1
In then counting（j）From increasing 1, exponent number counting is returned to（i）From increasing 1.
The advantage of technical solution of the present invention is mainly reflected in：Technical scheme can calculate current lithium electricity exactly
The voltage condition in pond, greatly increases the accuracy that new trend controller judges the electricity precision of lithium battery demand, reduces
The product cost of new trend controller.
Brief description of the drawings
Fig. 1 is new trend controller lithium battery voltage detection circuit diagram of the present invention.
Fig. 2 is new trend controller lithium battery voltage sampling routine figure of the present invention.
Fig. 3 is that 32 groups of magnitudes of voltage of new trend controller lithium battery of the present invention carry out the programme diagram of bubbling algorithm.
Embodiment
The purpose of the present invention, advantage and feature, will be carried out by the non-limitative illustration of preferred embodiment below diagram and
Explain.These embodiments are only the prominent examples using technical solution of the present invention, it is all take equivalent substitution or equivalent transformation and
The technical scheme of formation, all falls within the scope of protection of present invention.
Gathered present invention is disclosed a kind of new trend controller with electric quantity of lithium battery and evaluation method.The lithium electricity of new trend controller
Cell voltage detects circuit as shown in figure 1, lithium battery voltage detection circuit includes resistance R3, resistance R4, MCU, charging IC, resistance
R3 first end is connected with lithium battery, and resistance R3 the second end is electrically connected with MCU ADC interface, resistance R4 first end,
Resistance R4 the second end ground connection, MCU data output is electrically connected with the data input port for the IC that charges.MCU passes through with charging IC
RS serial ports is connected, and charging IC charged state I/O port is connected to MCU inputting testing terminal.
MCU selects the single-chip microcomputer of 32, and MCU refers to micro-control unit, and ADC refers to analog-to-digital converting module, ADC precision
For 12, resistance R3 and R4 are precision resister, and MCU, ADC, precision resister R3 and precision resister R4 constitute partial pressure electricity
Road, it is ensured that input voltage is no more than MCU reference voltage, charging IC charged state I/O port is connected to MCU input test side
Mouthful, decision level state is passed through by port MCU, so that it may know whether lithium battery is in charged state.MCU is adopted by ADC
Collection, obtains the voltage of current lithium battery, then compares the charging and discharging curve figure of voltage and lithium battery, just obtains current lithium electricity
The charge condition in pond.
New trend controller lithium battery voltage sampling routine figure, as shown in Fig. 2 VMC controller is adopted with electric quantity of lithium battery
Collection comprises the following steps with evaluation method --
S1：After MCU initialization is finished, ADC DMA channel is opened, and timer is opened, during ADC sampling time timing ga(u)ges,
MCU collects the voltage of lithium battery by ADC and will read each battery core voltage parameter of lithium battery and sends to menu function and phase
Function is closed to be handled；DMA English spelling for " Direct Memory Access ", i.e. direct memory access, be it is a kind of not
By CPU directly from the data exchange mode of memory access data.In dma mode, DMA uses special hardware writes data
Calculator memory is transferred directly to, so as to improve the data throughout of system, CPU need only assign instruction to dma controller, allow
Dma controller carrys out the transmission of processing data, and Data Transfer Done is given CPU feedback of the information again, thus largely mitigated
Cpu resource occupation rate, can greatly save system resource.
S2：After menu function and correlation function are handled, judge whether the ADC sampling times are timed to by MCU and reach, if
The ADC sampling times, which are not timed to, to be reached, then re-starts and be back to menu function and correlation function processing；If ADC samples
Between be timed to and reach, then MCU judges whether the charged state of lithium battery is in high level state；
S3：If MCU judges that the charged state of lithium battery is in high level state, display lithium battery is charging and ADC is adopted
Reset during the timing ga(u)ge of sample time；If the charged state of lithium battery is not high level state, ADC sample datas are cached
Sampling, the sample data is preferably 32 groups of data, and it can also be other numbers that the sample data, which is not limited only to 32 groups of sample datas,
According to being handled with bubbling algorithm the obtained sample data of measurement, the ascending order data of a sample data obtained, to data
Middle sequence carries out computing of averaging in middle sample data, specifically, enters to being sorted in data in 16 groups of middle data
Capable calculating of averaging, when sample data chooses other values, change can also be ensued in middle sample data value by sorting
Change, and then obtain metastable data, according to the current voltage of electric resistance partial pressure ratio calculation lithium battery, then MCU contrasts lithium
Battery charging and discharging curve map, resets when showing electric quantity of lithium battery situation and ADC sampling time timing ga(u)ges；
S4：Corresponding judgement is made after MCU contrast charging and discharging lithium battery curve maps and is handled, when the electricity of lithium battery is shown as low
During electricity, at this moment system can send alarm, when the electricity of lithium battery is shown as normal electricity scope, the normal work of system
Make, when the electricity of lithium battery is shown as ultralow electricity, system can be closed.
The bubbling algorithm comprises the following steps --
S1：ADC buffer inlets, exponent number is counted（i）1 is put, judges that exponent number is counted（i）Whether 32 are less than, if not, judging that data change
Whether become flag bit into 0, if being not 0, then return, be such as 0, then export the array sorted, EP (end of program)；
S2：As exponent number is counted（i）Less than 32, then data change mark position 0, count（j）Set to 0, then judge to count（j）Whether
Less than 32-i, then carry out judging data cached in this way【j】Whether it is more than data cached【j+1】, such as larger than, then data change mark
Position 1, it is data cached【j】With caching array【j+1】Exchange, count（j）From increasing 1, exponent number counting is returned to（i）It is such as small from increasing 1
In then counting（j）From increasing 1, exponent number counting is returned to（i）From increasing 1.
Technical scheme can calculate the voltage condition of current lithium battery exactly, greatly increase new air control
Device processed judges the electricity precision of lithium battery the accuracy of demand, reduces the product cost of new trend controller.
Claims (3)
1. VMC controller is gathered and evaluation method with electric quantity of lithium battery, it is characterised in that：This method includes following step
Suddenly --
S1：After MCU initialization is finished, ADC DMA channel is opened, and timer is opened, during ADC sampling time timing ga(u)ges,
MCU collects the voltage of lithium battery by ADC and will read each battery core voltage parameter of lithium battery and sends to menu function and phase
Function is closed to be handled；
S2：After menu function and correlation function are handled, judge whether the ADC sampling times are timed to by MCU and reach, if ADC
Sampling time, which is not timed to, to be reached, then re-starts and be back to menu function and correlation function processing；If the ADC sampling times determine
When reach, then MCU judge lithium battery charged state whether be in high level state；
S3：If MCU judges that the charged state of lithium battery is in high level state, display lithium battery is charging and ADC is adopted
Reset during the timing ga(u)ge of sample time；If the charged state of lithium battery is not high level state, ADC sample datas are cached
Sampling, handles the sample data that measurement is obtained with bubbling algorithm, obtains the ascending order data of a sample data, logarithm
Computing of averaging is carried out in middle sample data according to middle sequence, and then obtains metastable data, according to electric resistance partial pressure
The current voltage of ratio calculation lithium battery, then MCU contrast charging and discharging lithium battery curve map, show electric quantity of lithium battery situation and
Reset during ADC sampling time timing ga(u)ges；
S4：Corresponding judgement is made after MCU contrast charging and discharging lithium battery curve maps and is handled, when the electricity of lithium battery is shown as low
During electricity, at this moment system can send alarm, when the electricity of lithium battery is shown as normal electricity scope, the normal work of system
Make, when the electricity of lithium battery is shown as ultralow electricity, system can be closed.
2. VMC controller according to claim 1 is gathered and evaluation method with electric quantity of lithium battery, it is characterised in that：
The sample data is 32 groups of data.
3. VMC controller according to claim 1 is gathered and evaluation method with electric quantity of lithium battery, it is characterised in that：
The bubbling algorithm comprises the following steps --
S1：ADC buffer inlets, exponent number is counted（i）1 is put, judges that exponent number is counted（i）Whether 32 are less than, if not, judging that data change
Whether become flag bit into 0, if being not 0, then return, be such as 0, then export the array sorted, EP (end of program)；
S2：As exponent number is counted（i）Less than 32, then data change mark position 0, count（j）Set to 0, then judge to count（j）Whether
Less than 32-i, then carry out judging data cached in this way【j】Whether it is more than data cached【j+1】, such as larger than, then data change mark
Position 1, it is data cached【j】With caching array【j+1】Exchange, count（j）From increasing 1, exponent number counting is returned to（i）It is such as small from increasing 1
In then counting（j）From increasing 1, exponent number counting is returned to（i）From increasing 1.
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