CN107219462A - A kind of real-time observation circuit of electricity - Google Patents
A kind of real-time observation circuit of electricity Download PDFInfo
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- CN107219462A CN107219462A CN201710309445.1A CN201710309445A CN107219462A CN 107219462 A CN107219462 A CN 107219462A CN 201710309445 A CN201710309445 A CN 201710309445A CN 107219462 A CN107219462 A CN 107219462A
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Classifications
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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
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
-
- 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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
Abstract
The invention discloses a kind of real-time observation circuit of electricity, belong to battery detecting technical field, the observation circuit includes current sampling circuit, timing supervisory circuit and output resistance circuit, wherein current sampling circuit connects detected battery and timing supervisory circuit respectively, and output resistance circuit connects timing supervisory circuit and detection port respectively；Output resistance circuit includes analog switch chip and multiple resistance, multiple resistance are serially connected to form resistance string, the two ends connecting detection port of resistance string, the control end connection timing supervisory circuit of analog switch chip, the switch terminals of analog switch chip successively with multiple resistor coupled in parallel.The present invention monitors battery remaining power in real time using Intelligent Single-Chip Based technology, the online acquisition of battery dump energy numerical value is realized by simple means, the problem of solving equipment supplying cell power consumption and remaining use time can not be determined, to exploration engineering be smoothed out provide reliable guarantee.
Description
Technical field
The invention belongs to battery detecting technical field, more particularly to a kind of real-time observation circuit of electricity.
Background technology
Battery is the power supply energy of detector circuit, it is considered to which wave detector dispatches from the factory, and the quality guarantee period is longer and usage quantity is larger,
Change battery extremely inconvenient, therefore when wave detector design, the battery of many use large energies, with ensure in the shelf-life without
Battery altering.But exploration engineering field operation environment is complicated, operating personnel's specification capabilities differ, and wave detector unavoidably occurs
Misuse, the waste of the energy content of battery is caused, so as to bring the shortening of battery life.Because geological prospecting particularly oil is surveyed
The engineering phase of spy is longer, short then tens days, the long then several months, to ensure that exploration engineering is smoothed out, before engineering starts or in progress
The dump energy of clear and definite wave detector supplying cell at any time and remaining use time are needed, is easy to take measures in time.Exploration engineering
Field condition is poor, and detection means lacks.So as to cause that the remaining use time of supplying cell can not be judged, to whole exploration engineering
Be smoothed out bring very big uncertainty.
For power voltage supply during ensureing whole work is steady, low-power consumption, small size, big energy and the disposable spy that do not charge
Levy, wave detector is typically powered using batteries such as lithium Asia or lithium manganese.Lithium is sub- or lithium-manganese cell is different from the another of other disposable batteries
One feature is the near-sighted square of discharge characteristic curve, as shown in Figure 1.In figure, lithium Asia battery in whole effective power-on time, its
Output voltage myopia is constant.Such battery keeps the amplitude of output voltage, ensure that circuit reaches in effective power-on time
Maximum dynamic range, but be due to the uniqueness of the sub- cell output voltage of lithium, it is impossible to as other batteries, by testing electricity
Pond output voltage estimates the power consumption of battery.
The content of the invention
In view of this, present invention design completes a kind of real-time observation circuit of electricity, can realize electricity by simple means
The online acquisition of pond dump energy numerical value, solves equipment supplying cell asking of can not determining of power consumption and remaining use time
Topic, to being smoothed out there is provided reliable guarantee for exploration engineering.
The present invention is solved the above problems by following technological means：
A kind of real-time observation circuit of electricity, it is characterised in that including current sampling circuit, timing supervisory circuit and output resistance electricity
Road, wherein：
Current sampling circuit connects detected battery and timing supervisory circuit respectively, and output resistance circuit connects timing monitoring respectively
Circuit and detection port；
The output resistance circuit includes analog switch chip and multiple resistance, and the multiple resistance is serially connected to form resistance
String, the two ends connecting detection port of the resistance string, the control end connection timing supervisory circuit of the analog switch chip is described
The switch terminals of analog switch chip successively with the multiple resistor coupled in parallel.
Further, the current sampling circuit includes sampling resistor, and the sampling resistor is connected on detected battery
In power supply circuit.
Further, the timing supervisory circuit includes PIC16F type single-chip microcomputers, and the PIC16F types single-chip microcomputer passes through A/D
Converter connects sampling resistor.
Further, the output resistance circuit includes TS12A44515 type analog switch chips, the TS12A44515
The control end of type analog switch chip is sequentially connected PIC16F type single-chip processor i/o delivery outlets, and the TS12A44515 patterns are intended opening
The switch terminals for closing chip are individually in parallel with multiple resistance successively.
When the use time and residue that a kind of real-time observation circuit of electricity calculates battery using frequency conversion clocking method are used
Between, the frequency conversion clocking method adjusts monitoring chip in current sampling circuit according to the numerical value for being detected cell output current
Toggle rate, with the accurate use time for calculating detected battery and remaining use time.
Further, the frequency conversion clocking method specifically includes following steps：
1）The real-time observation circuit of electricity is started working；
2）Timing supervisory circuit gathers the output current numerical value for being detected battery by A/D modular converters, current sampling circuit；
3）According to the cell output current numerical value gathered in real time, the toggle rate for setting timing supervisory circuit different；
4）Battery use time is added up according to different toggle rates；
5）The use time that above-mentioned steps calculate is subtracted according to the terminal life time of the demarcation of detected battery to draw
Remaining battery use time；
6）Timing supervisory circuit according to remaining battery use time by controlling the analog switch chip in output resistance circuit, it is real
The short circuit of existing different resistance and the overall resistance value for changing resistance string.
Further, the cell output current numerical value that the basis is gathered in real time, the meter for setting timing supervisory circuit different
When frequency include following corresponding relation：
When cell output current is rating number I, timing supervisory circuit is according to normal toggle rate f timing；
When cell output current is 1.5 to 2.5 times of rating number I, timing supervisory circuit is according to 2 times of normal toggle rate f
Numerical value timing；
When cell output current is 2.5 to 3.5 times of rating number I, timing supervisory circuit is according to 3 times of normal toggle rate f
Numerical value timing；
Cell output current is rating number I's（N-0.5）Extremely（N+0.5）Times when, timing supervisory circuit according to normal timing frequency
Rate f N multiple value timing, wherein N is more than or equal to 4 and is positive integer.
Further, the rating number I of the cell output current is 0.2A, the normal timing of the timing supervisory circuit
Frequency f is 5MHZ.
A kind of real-time observation circuit of electricity of the present invention has the advantages that：
The present invention monitors battery remaining power in real time using Intelligent Single-Chip Based technology, and battery dump energy is realized by simple means
The online acquisition of numerical value, the problem of solving equipment supplying cell power consumption and remaining use time can not be determined, to exploration
Being smoothed out of engineering provides reliable guarantee.
A kind of operation principle for the real-time observation circuit of electricity that the present invention is provided is as follows：
Wave detector running current is A (μ A), and battery rated capacity is B（Ah）It can then estimate in running current feelings
Under condition, effectively power supply life time is H, wherein：H = B/A.Converted, can conveniently draw can useful life use how many when
Between, such as year, the moon.The technical scheme that the present invention is provided has following technical characterstic：
1 according to the numerical values recited of cell output current, adjusts timing multiplying power, realizes accurate metering.
Wave detector normal static is A using electric current, but such as user of service, by specification is not operated, and there is improper（Disobey
Rule use）Using possibility, during non-normal use, static current of lcd can be multiplied, and cause battery power consumption to be multiplied.Using soft
Part and current sampling comparison circuit, wave detector static current of lcd can be monitored in real time, and according to the size sectional of electric current（Normal static
Electric current, normal dynamic electric current, exception are jolted, drop current）Different multiplying time mathematic(al) expectation, such as abnormal quiescent current
When, such as 2A, 3A, 10A control the frequency of internal clocking clock to reach 2f, 3f, 10f etc. and carried out respectively to reach by software
The life time statistics of battery power consumption.And the power consumption calculated according to accumulation, battery is calculated by house software and uses electricity
With remaining use time.
2 intelligent control wave detector output resistances, realize monitoring battery remaining power in real time
, can real time reaction battery behaviour in service by timing.But it must be indicated by output interface information.Such as it is conventional batteries
Circuit is detected, dump energy use time can be directly indicated by display terminal.Because the particularity of wave detector construction environment will
Ask, wave detector is directly displayed using battery information inconvenience by interface message.For seismic detector in exploration engineering initial inspection
Monitoring wave detector output resistance this function of being used during wave detector, this technology using single-chip microcomputer according to electricity real time status, it is defeated
Go out Real-time Logic information, by controlling simulation combination, battery behaviour in service information is changed wave detector by internal intelligent control
Export combined resistance.Wave detector user of service can measure the different output resistance of wave detector by seismic detector or resistance test instrument
Value, has come electrolytic cell use time and the remaining use time of judgement.
3rd, software realizes timing or countdown
Characterize, monitored in real time with single-chip microcomputer micro-chip processor control software using useful life use time as the life-span of battery,
Timing is carried out within battery effective time, the battery use time and dump energy use time can be conveniently drawn.The battery longevity
When life is reached, battery undervoltage Realtime Alerts.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that the sub- cell voltage of lithium changes over time schematic diagram；
Fig. 2 is a kind of electrical block diagram of the real-time observation circuit of electricity of the invention；
Fig. 3 is a kind of circuit connection diagram of the real-time observation circuit of electricity of the invention；
Fig. 4 is a kind of frequency conversion clocking method flow chart of the real-time observation circuit of electricity of the invention；
Fig. 5 is a kind of output resistance mapping table of the real-time observation circuit of electricity of the invention.
Embodiment
In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings
Orientation or position relationship, are for only for ease of the description present invention and simplify description, rather than indicate or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance or implicit indicate
The quantity of indicated technical characteristic.Thus, " first " is defined, the feature of " second " can express or implicitly include one
Individual or more this feature.In the description of the invention, unless otherwise indicated, " multiple " be meant that two or two with
On.
Below with reference to accompanying drawing, the present invention is described in detail.
As shown in Fig. 2 a kind of real-time observation circuit of electricity, including current sampling circuit, timing supervisory circuit and output electricity
Resistance circuit, wherein：Current sampling circuit connects detected battery and timing supervisory circuit respectively, and output resistance circuit is connected respectively
Timing supervisory circuit and detection port；The output resistance circuit includes analog switch chip and multiple resistance, the multiple electricity
Resistance is serially connected to form resistance string, the two ends connecting detection port of the resistance string, and the control end of the analog switch chip connects
Connect timing supervisory circuit, the switch terminals of the analog switch chip successively with the multiple resistor coupled in parallel.
Specifically as shown in figure 3, the current sampling circuit includes sampling resistor, the sampling resistor is connected on detected
In the power supply circuit of battery.The timing supervisory circuit includes PIC16F type single-chip microcomputers, and the PIC16F types single-chip microcomputer passes through A/D
Converter connects sampling resistor.The output resistance circuit includes TS12A44515 type analog switch chips, described
The control end of TS12A44515 type analog switch chips is sequentially connected PIC16F type single-chip processor i/o delivery outlets, described
The switch terminals of TS12A44515 type analog switch chips are individually in parallel with multiple resistance successively.
It should be noted that R is current sampling resistor, current sampling electricity is constituted together with A/D converter inside single-chip microcomputer
Road.The electric current of cell circuit forms voltage on R, and CPU monitors this voltage, and is data signal through AD conversion by this voltage, leads to
Cross after software realization relatively, determine the section of size of current.Single-chip microcomputer after foregoing monitoring calculation, output C1,
C2 ... Cn logical signals, control multiple analog switch TS44515（T1-Tn）Switch combination, reach change output resistance mesh
's.
As described in Figure 4, a kind of real-time observation circuit of electricity uses frequency conversion clocking method, and the frequency conversion clocking method is according to quilt
The toggle rate of monitoring chip in the numerical value of cell output current, adjustment current sampling circuit is detected, is detected with accurate calculate
The use time of battery and remaining use time.
Further, the frequency conversion clocking method specifically includes following steps：
1）The real-time observation circuit of electricity is started working；
2）Timing supervisory circuit gathers the output current numerical value for being detected battery by A/D modular converters, current sampling circuit；
3）According to the cell output current numerical value gathered in real time, the toggle rate for setting timing supervisory circuit different；
4）Battery use time is added up according to different toggle rates；
5）The use time that above-mentioned steps calculate is subtracted according to the terminal life time of the demarcation of detected battery to draw
Remaining battery use time；
6）Timing supervisory circuit according to remaining battery use time by controlling the analog switch chip in output resistance circuit, it is real
The short circuit of existing different resistance and the overall resistance value for changing resistance string.
The technical scheme that the present invention is provided is by a variable output resistance, the direct reaction cell of size of its value
Remaining life.Resistance is corresponding with service life as follows：It is specific such as Fig. 5 electricity by taking 2 years all weather operations life-spans of battery as an example
Pond is shown in the mapping table of use time, remaining use time and wave detector output resistance.
Further, the cell output current numerical value that the basis is gathered in real time, the meter for setting timing supervisory circuit different
When frequency include following corresponding relation：
When cell output current is rating number I, timing supervisory circuit is according to normal toggle rate f timing；
When cell output current is 1.5 to 2.5 times of rating number I, timing supervisory circuit is according to 2 times of normal toggle rate f
Numerical value timing；
When cell output current is 2.5 to 3.5 times of rating number I, timing supervisory circuit is according to 3 times of normal toggle rate f
Numerical value timing；
Cell output current is rating number I's（N-0.5）Extremely（N+0.5）Times when, timing supervisory circuit according to normal timing frequency
Rate f N multiple value timing, wherein N is more than or equal to 4 and is positive integer.
Further, the rating number I of the cell output current is 0.2A, the normal timing of the timing supervisory circuit
Frequency f is 5MHZ.
It should be noted that in the cell circuit of supply wave detector power work, adding current sampling circuit.Single-chip microcomputer
The size of monitoring wave detector operating current, and according to size of current and working time in real time, calculates real-time power consumption energy.And can root
According to battery gross energy, to calculate energy consumption, dump energy and remaining use time.Real time information can be by directly displaying（Liquid
Crystalline substance etc.）Or indicated by changing wave detector output resistance.Seismic detector or resistance test set（Digital multimeter etc.）Pass through
Test wave detector output resistance carrys out awareness information.
A kind of real-time observation circuit of electricity of the present invention has the advantages that：
The present invention monitors battery remaining power in real time using Intelligent Single-Chip Based technology, and battery dump energy is realized by simple means
The online acquisition of numerical value, the problem of solving equipment supplying cell power consumption and remaining use time can not be determined, to exploration
Being smoothed out of engineering provides reliable guarantee.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (8)
1. a kind of real-time observation circuit of electricity, it is characterised in that including current sampling circuit, timing supervisory circuit and output resistance
Circuit, wherein：
Current sampling circuit connects detected battery and timing supervisory circuit respectively, and output resistance circuit connects timing monitoring respectively
Circuit and detection port；
The output resistance circuit includes analog switch chip and multiple resistance, and the multiple resistance is serially connected to form resistance
String, the two ends connecting detection port of the resistance string, the control end connection timing supervisory circuit of the analog switch chip is described
The switch terminals of analog switch chip successively with the multiple resistor coupled in parallel.
2. the real-time observation circuit of electricity according to claim 1, it is characterised in that the current sampling circuit includes sampling
Resistance, the sampling resistor is connected in the power supply circuit of detected battery.
3. the real-time observation circuit of electricity according to claim 2, it is characterised in that the timing supervisory circuit includes
PIC16F type single-chip microcomputers, the PIC16F types single-chip microcomputer connects sampling resistor by A/D converter.
4. the real-time observation circuit of electricity according to claim 3, it is characterised in that the output resistance circuit includes
TS12A44515 type analog switch chips, the control end of the TS12A44515 types analog switch chip is sequentially connected PIC16F types
Single-chip processor i/o delivery outlet, the switch terminals of the TS12A44515 types analog switch chip are individually in parallel with multiple resistance successively.
5. a kind of real-time observation circuit of electricity, it is characterised in that using frequency conversion clocking method calculate battery use time and
Remaining use time, the frequency conversion clocking method is adjusted in current sampling circuit according to the numerical value for being detected cell output current
The toggle rate of monitoring chip, with the accurate use time for calculating detected battery and remaining use time.
6. the real-time observation circuit of electricity according to claim 5, it is characterised in that the frequency conversion clocking method is specifically included
Following steps：
1）The real-time observation circuit of electricity is started working；
2）Timing supervisory circuit gathers the output current numerical value for being detected battery by A/D modular converters, current sampling circuit；
3）According to the cell output current numerical value gathered in real time, the toggle rate for setting timing supervisory circuit different；
4）Battery use time is added up according to different toggle rates；
5）The use time that above-mentioned steps calculate is subtracted according to the terminal life time of the demarcation of detected battery to draw
Remaining battery use time；
6）Timing supervisory circuit according to remaining battery use time by controlling the analog switch chip in output resistance circuit, it is real
The short circuit of existing different resistance and the overall resistance value for changing resistance string.
7. the real-time observation circuit of electricity according to claim 6, it is characterised in that the battery that the basis is gathered in real time is defeated
Go out current values, set the different toggle rate of timing supervisory circuit to include following corresponding relation：
When cell output current is rating number I, timing supervisory circuit is according to normal toggle rate f timing；
When cell output current is 1.5 to 2.5 times of rating number I, timing supervisory circuit is according to 2 times of normal toggle rate f
Numerical value timing；
When cell output current is 2.5 to 3.5 times of rating number I, timing supervisory circuit is according to 3 times of normal toggle rate f
Numerical value timing；
Cell output current is rating number I's（N-0.5）Extremely（N+0.5）Times when, timing supervisory circuit according to normal timing frequency
Rate f N multiple value timing, wherein N is more than or equal to 4 and is positive integer.
8. the real-time observation circuit of electricity according to claim 7, it is characterised in that the nominal number of the cell output current
Value I is 0.2A, and the normal toggle rate f of the timing supervisory circuit is 5MHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309445.1A CN107219462B (en) | 2017-05-04 | 2017-05-04 | electric quantity real-time monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309445.1A CN107219462B (en) | 2017-05-04 | 2017-05-04 | electric quantity real-time monitoring circuit |
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| CN107219462A true CN107219462A (en) | 2017-09-29 |
| CN107219462B CN107219462B (en) | 2019-12-10 |
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| CN201710309445.1A Expired - Fee Related CN107219462B (en) | 2017-05-04 | 2017-05-04 | electric quantity real-time monitoring circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196202A (en) * | 2018-02-23 | 2018-06-22 | 南京飞腾电子科技有限公司 | A kind of monitoring method of electrical energy meter electricity tankage |
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| CN104237806A (en) * | 2014-10-20 | 2014-12-24 | 上海空间电源研究所 | Voltage sampling device, system and method of battery cell of lithium-ion battery pack |
| CN105259494A (en) * | 2015-10-27 | 2016-01-20 | 北京新能源汽车股份有限公司 | Testing device and method of cell balancing circuit |
| CN105576304A (en) * | 2016-02-29 | 2016-05-11 | 中国人民解放军武汉军械士官学校 | Battery pack management system and battery pack management method |
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2017
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Patent Citations (5)
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| CN102565708A (en) * | 2010-11-29 | 2012-07-11 | 深圳富泰宏精密工业有限公司 | Battery capacity detection system |
| US20130320991A1 (en) * | 2012-05-30 | 2013-12-05 | Renesas Electronics Corporation | Voltage monitoring module and voltage monitoring system |
| CN104237806A (en) * | 2014-10-20 | 2014-12-24 | 上海空间电源研究所 | Voltage sampling device, system and method of battery cell of lithium-ion battery pack |
| CN105259494A (en) * | 2015-10-27 | 2016-01-20 | 北京新能源汽车股份有限公司 | Testing device and method of cell balancing circuit |
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| CN108196202A (en) * | 2018-02-23 | 2018-06-22 | 南京飞腾电子科技有限公司 | A kind of monitoring method of electrical energy meter electricity tankage |
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