CN109143075A - A kind of acquisition method and system of voltage - Google Patents
A kind of acquisition method and system of voltage Download PDFInfo
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- CN109143075A CN109143075A CN201810776787.9A CN201810776787A CN109143075A CN 109143075 A CN109143075 A CN 109143075A CN 201810776787 A CN201810776787 A CN 201810776787A CN 109143075 A CN109143075 A CN 109143075A
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Abstract
The present invention relates to a kind of acquisition method of voltage and systems, the method is applied to battery, and the battery connects divider resistance, and the divider resistance connects microprocessor, the described method includes: determining the acquisition moment of the microprocessor according to the collection period of the microprocessor；When reaching the acquisition moment of the microprocessor, the microprocessor is switched into wake-up states from sleep state；When the microprocessor is in wake-up states, the voltage of the battery is acquired from the divider resistance；When the voltage of the battery is normal voltage, the microprocessor is switched into sleep state by wake-up states.
Description
Technical field
The present invention relates to power domains, more particularly to the acquisition method and system of a kind of voltage.
Background technique
Battery includes lead-acid battery, lithium battery etc., these batteries are widely used to industrial production, life, traffic, building
Etc. various aspects.In order to avoid battery operation irregularity, need to acquire the relevant informations such as electricity, the voltage of battery, to send out in time
Now abnormal battery, and it is avoided to cause various adverse effects to user.
It is to connect acquisition device with battery when at present to the acquisition of battery relevant information, battery is provided to acquisition device
Battery, acquisition device acquire the electricity of battery, information of voltage in real time.But this mode can seriously expend the electricity of battery, drop
The service life of low battery.
Summary of the invention
Based on this, it is necessary to for the serious quantity problem for expending battery of acquisition of current battery relevant information, provide one
The acquisition method and system of kind voltage.
A kind of acquisition method of voltage is applied to battery, and the battery connects divider resistance, and the divider resistance connection is micro-
Processor, which comprises
According to the collection period of the microprocessor, the acquisition moment of the microprocessor is determined；
When reaching the acquisition moment of the microprocessor, the microprocessor is switched into wake-up shape from sleep state
State；
When the microprocessor is in wake-up states, the voltage of the battery is acquired from the divider resistance；
When the voltage of the battery is normal voltage, the microprocessor is switched into sleep state by wake-up states.
Preferably, the method also includes:
When the voltage of the battery is abnormal voltage, the voltage data of the battery is compressed；
Compressed data are sent to terminal, decompress terminal to the compressed data, and after filtration
Show final voltage data.
Preferably, the collection period according to the microprocessor, before the acquisition moment for determining the microprocessor,
The method also includes:
Obtain the information about power of the battery；
The collection period of the microprocessor is determined according to the information about power of the battery, wherein the electricity of the battery
Information is bigger, and the collection period of the microprocessor is longer.
Preferably, described when the microprocessor is in wake-up states, the battery is acquired from the divider resistance
Voltage before, the method also includes:
Determine the current voltage times of collection of the microprocessor；
When the current voltage times of collection is greater than preset times value, terminate the voltage acquisition to the battery.
Preferably, before the end is to the voltage acquisition of the battery, the method also includes:
According to the information about power of the battery, determine that the microprocessor is acquired the voltage of the battery described in
Preset times value；Wherein, the information about power of the battery is bigger, and the preset times value is bigger.
Preferably, the voltage of the battery is abnormal voltage, comprising:
According to the voltage of the battery, the changing value of the voltage of the battery is determined；
When the changing value exceeds preset interval range, determine that the voltage of the battery is abnormal voltage；
Wherein, the information about power of the battery is smaller, and the interval range is bigger.
A kind of acquisition system of voltage is applied to battery, and the battery connects divider resistance, and the divider resistance connection is micro-
Processor, the system comprises:
Determining module determines the acquisition moment of the microprocessor for the collection period according to the microprocessor；
First switching module, for when reaching the acquisition moment of the microprocessor, by the microprocessor from sleep
State switches to wake-up states；
Acquisition module, for acquiring the electricity from the divider resistance when the microprocessor is in wake-up states
The voltage in pond；
Second switching module, for when the voltage of the battery be normal voltage when, by the microprocessor by wake-up shape
State switches to sleep state.
Preferably, the system also includes:
Compression module, for pressing the voltage data of the battery when the voltage of the battery is abnormal voltage
Contracting；
Sending module solves terminal to the compressed data for compressed data to be sent to terminal
Pressure, and final voltage data is shown after filtration.
Preferably, the system also includes:
Module is obtained, for obtaining the information about power of the battery；
Period determination module, for determining the collection period of the microprocessor according to the information about power of the battery,
In, the information about power of the battery is bigger, and the collection period of the microprocessor is longer.
Preferably, the compression module is also used to:
According to the voltage of the battery, the changing value of the voltage of the battery is determined；
When the changing value exceeds preset interval range, determine that the voltage of the battery is abnormal voltage；
Wherein, the information about power of the battery is smaller, and the interval range is bigger.
In the embodiment of the present invention, microprocessor can be acquired according to voltage of the collection period to battery, adopted
Before collection, microprocessor is in sleep state, at this point, microprocessor is in the state of not power consumption；When adopting for arrival microprocessor
When collecting the moment, microprocessor can switch to wake-up states from sleep state, and in the awake state, microprocessor can be to divider resistance
The voltage of upper battery is acquired, after acquisition, if the voltage of the battery is normal voltage, by wake-up states if microprocessor
Switch to sleep state；Microprocessor is to carry out in point period to the voltage acquisition of battery as a result, rather than real-time perfoming can drop
Humble processor power consumption, to reduce the power consumption of battery；Microprocessor only can enter wake-up states in collection voltages, i.e.,
Microprocessor only can just understand power consumption when acquiring the voltage of battery, thus avoid microprocessor from being constantly in wake-up states and
The electricity of serious waste battery.
Detailed description of the invention
Fig. 1 is the flow chart of the acquisition method of the voltage of an embodiment；
Fig. 2 is the Acquisition Circuit figure of the voltage of an embodiment；
Fig. 3 is the structure chart of the acquisition system of the voltage of an embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As depicted in figs. 1 and 2, a kind of acquisition method of voltage is present embodiments provided, battery is applied to, the battery connects
Divider resistance is connect, the divider resistance connects microprocessor, which comprises
Step 120, according to the collection period of the microprocessor, the acquisition moment of the microprocessor is determined；
Step 140, when reaching the acquisition moment of the microprocessor, the microprocessor is switched to from sleep state
Wake-up states；
Step 160, when the microprocessor is in wake-up states, the electricity of the battery is acquired from the divider resistance
Pressure；
Step 180, when the voltage of the battery is normal voltage, the microprocessor is switched to by wake-up states and is slept
Dormancy state.
In the embodiment of the present invention, microprocessor can be acquired according to voltage of the collection period to battery, adopted
Before collection, microprocessor is in sleep state, at this point, microprocessor is in the state of not power consumption；When adopting for arrival microprocessor
When collecting the moment, microprocessor can switch to wake-up states from sleep state, and in the awake state, microprocessor can be to divider resistance
The voltage of upper battery is acquired, after acquisition, if the voltage of the battery is normal voltage, by wake-up states if microprocessor
Switch to sleep state；Microprocessor is to carry out in point period to the voltage acquisition of battery as a result, rather than real-time perfoming can drop
Humble processor power consumption, to reduce the power consumption of battery；Microprocessor only can enter wake-up states in collection voltages, i.e.,
Microprocessor only can just understand power consumption when acquiring the voltage of battery, thus avoid microprocessor from being constantly in wake-up states and
The electricity of serious waste battery.
For microprocessor when acquiring the voltage of battery, the voltage of acquisition usually has certain range, if adopted beyond this
Collect range, microprocessor is easy to cause to damage.Therefore, battery can be connected to by divider resistance, to reduce the electricity of battery
Pressure, the voltage for acquiring microprocessor is within acquisition range.
The size of divider resistance can carry out true according to the voltage swing of battery and the voltage acquisition range of microprocessor
It is fixed.
As shown in Fig. 2, divider resistance can be carried out using two resistance R44 and R45 of 0.1% precision of 100K and 10K
Partial pressure, so that the voltage of battery be enable to drop to the voltage range that microprocessor is handled.As shown in Figure 2, wherein BAT be battery just
Pole interface introduces cell voltage.VBAT is microprocessor I/O interface, is used for microprocessor collection voltages.In the present embodiment, in order to
Guarantee stability when microprocessor collection voltages, voltage-stabiliser tube D15 and ceramic condenser C20 (0.1uf) can be set, such as Fig. 2 institute
Show, voltage-stabiliser tube is connected in parallel at BAT, and ceramic condenser is connected in parallel at VBAT, guarantees the stability of collection voltages.
In the present embodiment, before step 120, the method also includes:
Obtain the information about power of the battery；
The collection period of the microprocessor is determined according to the information about power of the battery, wherein the electricity of the battery
Information is bigger, and the collection period of the microprocessor is longer.
Itself for battery, electricity varies, and electricity is bigger, and the discharge time of battery is longer, corresponding to adopt
Collection the period can correspond to it is longer, avoid frequently acquire battery voltage, waste the electricity of battery.
The wake-up period of battery can be set between 1~30s, and specific data can be set according to the actual situation
It sets.
It, can be by microprocessor if reach acquisition moment of the microprocessor to the voltage of battery according to collection period
State wake-up states are switched to by sleep state.
When microprocessor is not acquired the voltage of battery, microprocessor can be constantly in sleep state, avoid
Its power consumption.When microprocessor reaches the acquisition moment, wake-up states can be switched to by sleep state.Microprocessor is waking up shape
Under state, the voltage of battery can be acquired.
Microprocessor for acquisition voltage, if the voltage is normal voltage, then it represents that battery is normal, without old
Change, also without other failures.
It is noted that microprocessor acquisition battery voltage before, can to microprocessor acquire battery electricity
The number of pressure is defined, and the number for avoiding it from acquiring excessively expends more electricity.
In the present embodiment, when the microprocessor is in wake-up states, the battery is acquired from the divider resistance
Voltage before, can determine the current voltage times of collection of the microprocessor；When the current voltage times of collection is greater than
When preset times value, terminate the voltage acquisition to the battery.
Battery capacity is bigger, and voltage change is slower when electric discharge, therefore can reduce the number of acquisition, on the contrary, battery capacity is got over
It is small, then it can increase the number of acquisition.For this purpose, can be determined described micro- according to the information about power of the battery in the present embodiment
The preset times value that processor is acquired the voltage of the battery；Wherein, the information about power of the battery is bigger, institute
It is bigger to state preset times value.
If the number of the voltage of the battery of acquisition has exceeded preset secondary numerical value, stop acquiring.
It should be pointed out that preset secondary numerical value can be data whithin a period of time, for example, it may be one minute,
Either a few minutes or shorter or longer time.
Preset secondary numerical value usually can be set between 5~100 times, and certainly, specific data can be according to practical feelings
Condition is configured, and the present embodiment does not limit specifically herein.
Microprocessor is for the voltage of acquisition, if the voltage of the battery is abnormal voltage, microprocessor can be to electricity
The voltage data in pond is compressed, and compressed data are then sent to terminal, make terminal to the compressed data into
Row decompression, and final voltage data is shown after filtration.
Wherein, microprocessor is when whether the voltage for determining battery normal and abnormal, can according to the voltage of the battery,
Determine the changing value of the voltage of the battery；When the changing value exceeds preset interval range, the electricity of the battery is determined
Pressure is abnormal voltage；Wherein, the information about power of the battery is smaller, and the interval range is bigger.
The changing value of the voltage of battery can be the absolute value of the difference between the voltage twice of acquisition, be also possible to battery
Absolute value of the difference between voltage and preset voltage value.Typically, preset interval range can be 0.5V between 2V, such as
The fruit changing value is in 0.5V between 2V, then the voltage of battery is normal, and otherwise, illustrating battery, there are failures, at this point, microprocessor
The voltage data of the battery of acquisition can be compressed, be sent to terminal.
Microprocessor compresses the voltage of the battery of acquisition, it is possible to reduce the quantity amount of upload, and be further reduced
The number for uploading data, to reduce the power consumption of microprocessor.
In the present embodiment, microprocessor can compress the voltage data of upload using compressed sensing model.It needs
, it is noted that microprocessor can also acquire other data, be not limited to the present embodiment in voltage data, microprocessor is equal
Terminal is sent to after these data being compressed.
Compressed sensing model is a kind of data compression mode that can greatly reduce data volume, can specifically be summarized such as
Under: assuming that the initial data for needing to compress is X={ x_1, x_2 ..., x_N }, N is the number of initial data.Compression ratio is set as
Rate=0.3, then M=N*0.3 is compressed data amount check.The gaussian basis A of M*N can be generated using random function.Y=A*
X is compressed data.Compressed data Y can be transferred to terminal by microprocessor.
Terminal is receiving compressed data, can be restored, specifically, terminal can firstly generate wavelet transformation
Matrix ww=DWT (N).Then Y and A is subjected to wavelet transformation, it may be assumed that Y=Y*ww' and A=A*ww'.Finally using OMP algorithm into
Row data are restored.
Terminal can be filtered restoring data using the method for mean filter after restoring data, and present final
Result.
Fig. 3 is the structure chart of the acquisition system of the voltage of an embodiment.As shown in figure 3, the acquisition system of the voltage, application
In battery, the battery connects divider resistance, and the divider resistance connects microprocessor, the system comprises:
Determining module 320, for the collection period according to the microprocessor, when determining the acquisition of the microprocessor
It carves；
First switching module 340, for when reaching the acquisition moment of the microprocessor, by the microprocessor from sleeping
Dormancy state switches to wake-up states；
Acquisition module 360, described in being acquired from the divider resistance when the microprocessor is in wake-up states
The voltage of battery；
Second switching module 380, for when the voltage of the battery be normal voltage when, by the microprocessor by waking up
State switches to sleep state.
In the embodiment of the present invention, microprocessor can be acquired according to voltage of the collection period to battery, adopted
Before collection, microprocessor is in sleep state, at this point, microprocessor is in the state of not power consumption；When adopting for arrival microprocessor
When collecting the moment, microprocessor can switch to wake-up states from sleep state, and in the awake state, microprocessor can be to divider resistance
The voltage of upper battery is acquired, after acquisition, if the voltage of the battery is normal voltage, by wake-up states if microprocessor
Switch to sleep state；Microprocessor is to carry out in point period to the voltage acquisition of battery as a result, rather than real-time perfoming can drop
Humble processor power consumption, to reduce the power consumption of battery；Microprocessor only can enter wake-up states in collection voltages, i.e.,
Microprocessor only can just understand power consumption when acquiring the voltage of battery, thus avoid microprocessor from being constantly in wake-up states and
The electricity of serious waste battery.
Optionally, as one embodiment, the system also includes:
Compression module, for pressing the voltage data of the battery when the voltage of the battery is abnormal voltage
Contracting；
Sending module solves terminal to the compressed data for compressed data to be sent to terminal
Pressure, and final voltage data is shown after filtration.
Optionally, as one embodiment, the system also includes:
Module is obtained, for obtaining the information about power of the battery；
Period determination module, for determining the collection period of the microprocessor according to the information about power of the battery,
In, the information about power of the battery is bigger, and the collection period of the microprocessor is longer.
Optionally, as one embodiment, the compression module is also used to:
According to the voltage of the battery, the changing value of the voltage of the battery is determined；
When the changing value exceeds preset interval range, determine that the voltage of the battery is abnormal voltage；
Wherein, the information about power of the battery is smaller, and the interval range is bigger.
It is understood that the particular content in above method may be implemented in system above, specific implementation process can join
According to the content in above method, the present embodiment no longer illustrates herein.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of acquisition method of voltage is applied to battery, the battery connects divider resistance, and the divider resistance connects micro- place
Manage device, which is characterized in that the described method includes:
According to the collection period of the microprocessor, the acquisition moment of the microprocessor is determined；
When reaching the acquisition moment of the microprocessor, the microprocessor is switched into wake-up states from sleep state；
When the microprocessor is in wake-up states, the voltage of the battery is acquired from the divider resistance；
When the voltage of the battery is normal voltage, the microprocessor is switched into sleep state by wake-up states.
2. the method according to claim 1, wherein the method also includes:
When the voltage of the battery is abnormal voltage, the voltage data of the battery is compressed；
Compressed data are sent to terminal, decompress terminal to the compressed data, and show after filtration
Final voltage data.
3. the method according to claim 1, wherein the collection period according to the microprocessor, determines
Before the acquisition moment of the microprocessor, the method also includes:
Obtain the information about power of the battery；
The collection period of the microprocessor is determined according to the information about power of the battery, wherein the information about power of the battery
Bigger, the collection period of the microprocessor is longer.
4. the method according to claim 1, wherein described when the microprocessor is in wake-up states, from
Before the voltage for acquiring the battery on the divider resistance, the method also includes:
Determine the current voltage times of collection of the microprocessor；
When the current voltage times of collection is greater than preset times value, terminate the voltage acquisition to the battery.
5. according to the method described in claim 4, it is characterized in that, it is described end to the voltage acquisition of the battery before, institute
State method further include:
According to the information about power of the battery, it is described default to determine that the microprocessor is acquired the voltage of the battery
Secondary numerical value；Wherein, the information about power of the battery is bigger, and the preset times value is bigger.
6. according to the method described in claim 2, it is characterized in that, the voltage of the battery is abnormal voltage, comprising:
According to the voltage of the battery, the changing value of the voltage of the battery is determined；
When the changing value exceeds preset interval range, determine that the voltage of the battery is abnormal voltage；
Wherein, the information about power of the battery is smaller, and the interval range is bigger.
7. a kind of acquisition system of voltage is applied to battery, the battery connects divider resistance, and the divider resistance connects micro- place
Manage device, which is characterized in that the system comprises:
Determining module determines the acquisition moment of the microprocessor for the collection period according to the microprocessor；
First switching module, for when reaching the acquisition moment of the microprocessor, by the microprocessor from sleep state
Switch to wake-up states；
Acquisition module, for acquiring the battery from the divider resistance when the microprocessor is in wake-up states
Voltage；
Second switching module, for when the voltage of the battery is normal voltage, the microprocessor to be cut by wake-up states
Shift to sleep state.
8. system according to claim 7, which is characterized in that the system also includes:
Compression module, for being compressed to the voltage data of the battery when the voltage of the battery is abnormal voltage；
Sending module decompresses terminal to the compressed data for compressed data to be sent to terminal, and
Final voltage data is shown after filtration.
9. system according to claim 7, which is characterized in that the system also includes:
Module is obtained, for obtaining the information about power of the battery；
Period determination module, for determining the collection period of the microprocessor according to the information about power of the battery, wherein institute
The information about power for stating battery is bigger, and the collection period of the microprocessor is longer.
10. system according to claim 8, which is characterized in that the compression module is also used to:
According to the voltage of the battery, the changing value of the voltage of the battery is determined；
When the changing value exceeds preset interval range, determine that the voltage of the battery is abnormal voltage；
Wherein, the information about power of the battery is smaller, and the interval range is bigger.
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| CN110481383A (en) * | 2019-08-29 | 2019-11-22 | 华人运通(江苏)技术有限公司 | Data processing method and battery management system based on battery management system |
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