CN103487638B - A kind of accumulator low voltage test alarm method - Google Patents
A kind of accumulator low voltage test alarm method Download PDFInfo
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- CN103487638B CN103487638B CN201310472440.2A CN201310472440A CN103487638B CN 103487638 B CN103487638 B CN 103487638B CN 201310472440 A CN201310472440 A CN 201310472440A CN 103487638 B CN103487638 B CN 103487638B
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Abstract
The invention provides a kind of accumulator low voltage test warning device and method, wherein device comprises accumulator, single-chip microcomputer, adjustable resistance, diode, display, hummer, it is characterized in that adjustable resistance and diode cathode are all connected with the AD input end of single-chip microcomputer, display is connected with the output terminal of single-chip microcomputer by interface, hummer is connected with the output terminal of single-chip microcomputer, and accumulator is connected with single-chip microcomputer by interface.Because microcontroller power supply is provided by accumulator, the change in voltage meeting linear conduction of accumulator is to single-chip microcomputer, again by the terminal voltage that single chip computer measurement diode is constant, and the voltage of accumulator is derived conversely by the calculating of single-chip microcomputer, when battery tension is lower than setting threshold values, send sound, light alarm prompt by Single-chip Controlling display and hummer.The present invention can fine adjustment measured value, and structure is simple, and cost is low, and precision is high.
Description
Technical field
The present invention relates to a kind of detection alarm device and method, especially a kind of accumulator low voltage test warning device and method, belong to battery detecting technical field.
Background technology
Current various machine room and uninterrupted power source UPS use a large amount of accumulators, therefore need to carry out detecting & monitoring to battery tension, when voltage is lower than the threshold values limited, needs timely reminding user, otherwise the serviceable life of battery can be had a strong impact on because of over-discharge can.Existing accumulator low-voltage detection circuit, all directly measure based on accurate reference source, the accurate reference source chip of configuration one is needed to power to single-chip microcomputer, again by single-chip microcomputer utilize self accurately power source reference voltage the voltage that accumulator changes is measured, but use accurate reference source chip can improve the cost of hardware circuit, causing product cost performance when producing in enormous quantities to reduce, also reducing the selectable scope of electronic devices and components simultaneously, adding the limitation of circuit structure design.Therefore, be necessary to be improved prior art.
Summary of the invention
For overcoming that prior art needs to configure accurate reference source chip and the cost that brings is high, circuit structure is undesirable to be waited not enough, the invention provides a kind of accumulator low voltage test warning device.
Another object of the present invention is the method utilizing accumulator low voltage test warning device to realize the warning of accumulator low voltage test.
The present invention is to provide so a kind of accumulator low voltage test warning device, comprise accumulator, single-chip microcomputer, adjustable resistance, diode, display, hummer, it is characterized in that adjustable resistance and diode cathode are all connected with the AD input end of single-chip microcomputer, display is connected with the output terminal of single-chip microcomputer by interface, hummer is connected with the output terminal of single-chip microcomputer, and accumulator is connected with single-chip microcomputer by interface.The voltage changed to utilize accumulator is powered to single-chip microcomputer, and by the stable terminal voltage of single chip computer measurement diode, the voltage of accumulator is derived again by the calculating reverse push of single-chip microcomputer, when battery tension is lower than setting threshold values, send sound, light alarm prompt by Single-chip Controlling display and hummer.
The interface of described accumulator is made up of a connection terminal and two divider resistances, to provide power supply for other parts.
The positive pole of described diode is connected with the AD input end of single-chip microcomputer, minus earth.
One end of described adjustable resistance is connected with the AD input end of single-chip microcomputer, and the other end is connected with the interface of accumulator.
Described display is connected with the output terminal of single-chip microcomputer by interface, and display is also connected with the interface of accumulator by interface, provides power supply by it.
Described single-chip microcomputer is that in the present invention, microcontroller power supply must be provided by accumulator at least with the conventional products of a modulus AD conversion interface.
Second object of the present invention is realized by following technical proposal: a kind of accumulator low voltage test warning device realizes the method that accumulator low voltage test is reported to the police, and it is characterized in that through the following step:
(101) by the proportion divider resistance in selected accumulator interface, the ratio of a proportion divider resistance is obtained;
(102) by the adjustment of adjustable resistance to diode both end voltage, a stable magnitude of voltage is obtained;
(103) by monolithic processor resetting key, the clock module arranged single-chip microcomputer inside, I/O module, A/D module, automatically wake module carry out initialization;
(104) by the dormancy instruction key of single-chip microcomputer, single-chip microcomputer dormancy is made, to reduce power consumption;
(105) automatically wake timing signal up by what establish in single-chip microcomputer, wake single-chip microcomputer up and start AD conversion module work;
(106) single-chip microcomputer with the power supply of self for benchmark, the terminal voltage of the diode of step (102) is compared, and according to the ratio of the proportion divider resistance in comparison result value, accumulator interface and the magnitude of voltage at diode two ends, oppositely to derive calculating, obtain the actual voltage value of accumulator;
(107) the actual battery tension value that obtains according to step (106) of single-chip microcomputer, compares with accumulator threshold values, if be less than threshold values, then driving liquid crystal displays and hummer, sends audible and visual alarm prompting; If equal threshold values, then continue to perform dormancy instruction, wait for that the inner timing signal automatically waken up arrives.
The present invention has following advantages and effect: microcontroller power supply is provided by accumulator, the change in voltage meeting linear conduction of accumulator is to single-chip microcomputer, again by the terminal voltage that single chip computer measurement diode is constant, and the voltage of accumulator is derived conversely by the calculating of single-chip microcomputer, when battery tension is lower than setting threshold values, send sound, light alarm prompt by Single-chip Controlling display and hummer.The present invention, can fine adjustment measured value by adjustment adjustable resistance.It is simple that the present invention has structure, and components and parts range of choices is wide, and circuit structure design is flexible, and cost is low, precision advantages of higher.
Accompanying drawing explanation
Fig. 1 the present invention is based on the circuit diagram that model is the single-chip microcomputer of STM8S103K;
Fig. 2 is Single Chip Microcomputer (SCM) program workflow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Embodiment 1
As Fig. 1, accumulator low voltage test warning device provided by the invention, by model be the single-chip microcomputer 2 of STM8S103K, adjustable resistance 4, diode 3, liquid crystal display, accumulator, hummer 5 form.Concrete connection is as follows: power supply VCC is connected with adjustable resistance 4 positive pole, adjustable resistance 4 negative pole is connected with diode 3 positive pole, diode 3 positive pole is also connected with modulus AD conversion pin 13 pin of single-chip microcomputer 2 simultaneously, the minus earth of diode 3, 22 of single-chip microcomputer 2, 2 of the interface 6 of 23 pin and liquid crystal display, 3 pin are connected, 1 pin of the interface 6 of liquid crystal display is connected with the positive plate of power supply VCC, 17 pin of single-chip microcomputer 2 connect hummer 5, hummer 5 is connected with the positive plate of power supply VCC, 6 pin of single-chip microcomputer 2 are connected with the interface 1 of accumulator, this interface 1 is by an a connection terminal J1 and two divider resistance R1, R2 forms, to be liquid crystal display, single-chip microcomputer 2, adjustable resistance 4, power supply such as hummer 5 grade, all elements are commercial products.
Embodiment 2
As Fig. 2, the present embodiment 2 is when realizing the method that accumulator low voltage test is reported to the police, voltage during electricity full of single accumulator is when 2.26V, during practical application, its threshold values is 2.02V, this threshold values can be arranged in Single Chip Microcomputer (SCM) program, when multiple accumulator series connection uses, threshold values must be multiplied by battery number.Specific implementation step is as follows:
(101) by proportion divider resistance R1, the R2 in selected accumulator interface 5, obtain the ratio of a proportion divider resistance, thus provide the positive supply of 3.0 to 5.0V for single-chip microcomputer 1;
(102) adjusted by adjustable resistance 2 pairs of diode 3 both end voltage, obtain a stable magnitude of voltage 0.7V;
(103) by single-chip microcomputer 1 reset key, the clock module arranged single-chip microcomputer inside, I/O module, A/D module, automatically wake module carry out initialization;
(104) by the dormancy instruction key of single-chip microcomputer 1, single-chip microcomputer 1 dormancy is made, to reduce power consumption;
(105) automatically wake timing signal up by what establish in single-chip microcomputer 1, wake single-chip microcomputer 1 up and start AD conversion module work;
(106) single-chip microcomputer 1 with power supply 3.0 to the 5.0V of self for benchmark, the terminal voltage 0.7V of the diode 3 of step (102) is compared, and according to the ratio of the proportion divider resistance in this comparison result value, accumulator interface 5 and the magnitude of voltage 0.7V at diode two ends, oppositely derive calculating, the actual voltage value obtaining accumulator is;
(107) the actual battery tension value that obtains according to step (106) of single-chip microcomputer, compares with accumulator threshold values 2.02V, is less than threshold values, then driving liquid crystal displays 4 and hummer 6, sends audible and visual alarm prompting.
Embodiment 3
As Fig. 2, the present embodiment 3 is when realizing the method that accumulator low voltage test is reported to the police, voltage during electricity full of single accumulator is when 2.26V, during practical application, its threshold values is 2.02V, this threshold values can be arranged in Single Chip Microcomputer (SCM) program, when multiple accumulator series connection uses, threshold values must be multiplied by battery number.Specific implementation step is as follows:
(101) by proportion divider resistance R1, the R2 in selected accumulator interface 5, obtain the ratio of a proportion divider resistance, thus provide the positive supply of 3.0 to 5.0V for single-chip microcomputer 1;
(102) adjusted by adjustable resistance 2 pairs of diode 3 both end voltage, obtain a stable magnitude of voltage 0.7V;
(103) by single-chip microcomputer 1 reset key, the clock module arranged single-chip microcomputer inside, I/O module, A/D module, automatically wake module carry out initialization;
(104) by the dormancy instruction key of single-chip microcomputer 1, single-chip microcomputer 1 dormancy is made, to reduce power consumption;
(105) automatically wake timing signal up by what establish in single-chip microcomputer 1, wake single-chip microcomputer 1 up and start AD conversion module work;
(106) single-chip microcomputer 1 with power supply 3.0 to the 5.0V of self for benchmark, the terminal voltage 0.7V of the diode 3 of step (102) is compared, and according to the ratio of the proportion divider resistance in this comparison result value, accumulator interface 5 and the magnitude of voltage 0.7V at diode two ends, oppositely to derive calculating, obtain the actual voltage value of accumulator;
(107) the actual battery tension value that obtains according to step (106) of single-chip microcomputer, compares with accumulator threshold values 2.02V, equals threshold values, then continue to perform dormancy instruction, waits for that the inner timing signal automatically waken up arrives.
It is that battery tension is powered to single-chip microcomputer after proportion divider that the present invention realizes principle, follow with single-chip microcomputer self voltage that accumulator synchronously changes and AD sampling is carried out to the terminal voltage that diode is constant, reverse derivation calculating accumulator magnitude of voltage, when recording cell voltage lower than setting threshold values, just carry out low-voltage alarm.Fine setting adjustable resistance 2 can adjust the degree of accuracy of low pressure alarming threshold values.
Claims (1)
1. one kind realizes the method for accumulator low voltage test warning based on accumulator low voltage test warning device, it is characterized in that described accumulator low voltage test warning device, comprise accumulator, single-chip microcomputer, adjustable resistance, diode, display, hummer, wherein: adjustable resistance one end and diode cathode are all connected with the AD input end of single-chip microcomputer, the other end of adjustable resistance is connected with the interface of accumulator, the minus earth of diode, display is connected with the output terminal of single-chip microcomputer by interface, display is also connected with the interface of accumulator by interface, hummer is connected with the output terminal of single-chip microcomputer, accumulator is connected with single-chip microcomputer by interface, the interface of described accumulator is made up of a connection terminal and two divider resistances,
Described method is through the following step:
(101) by the proportion divider resistance in selected accumulator interface, the ratio of a proportion divider resistance is obtained;
(102) by the adjustment of adjustable resistance to diode both end voltage, a stable magnitude of voltage is obtained;
(103) by monolithic processor resetting key, the clock module arranged single-chip microcomputer inside, I/O module, A/D module, automatically wake module carry out initialization;
(104) by the dormancy instruction key of single-chip microcomputer, single-chip microcomputer dormancy is made, to reduce power consumption;
(105) automatically wake timing signal up by what establish in single-chip microcomputer, wake single-chip microcomputer up and start AD conversion module work;
(106) single-chip microcomputer with the power supply of self for benchmark, the terminal voltage of the diode of step (102) is compared, and according to the ratio of the proportion divider resistance in comparison result value, accumulator interface and the magnitude of voltage at diode two ends, oppositely to derive calculating, obtain the actual voltage value of accumulator;
(107) the actual battery tension value that obtains according to step (106) of single-chip microcomputer, compares with accumulator threshold values, if be less than threshold values, then driving liquid crystal displays and hummer, sends audible and visual alarm prompting; If equal threshold values, then continue to perform dormancy instruction, wait for that the inner timing signal automatically waken up arrives.
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| CN203224557U (en) * | 2013-03-24 | 2013-10-02 | 冯春艳 | A storage battery voltage monitor |
| CN203519716U (en) * | 2013-10-11 | 2014-04-02 | 武钢集团昆明钢铁股份有限公司 | Storage-battery low-voltage detection and alarm device |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108935U (en) * | 1991-10-15 | 1992-07-01 | 王建平 | Voltage drop indicator for accumulator |
| JP2000190793A (en) * | 1998-12-25 | 2000-07-11 | Toyota Motor Corp | Battery capacity warning system |
| JP2001258169A (en) * | 2000-03-13 | 2001-09-21 | Matsushita Electric Ind Co Ltd | Circuit for detection of voltage reduction and specification discrimination |
| CN201868531U (en) * | 2010-07-09 | 2011-06-15 | 深圳市迪迪美环保科技有限公司 | Lead acid storage battery maintenance device with alarming promotion function |
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Effective date of registration: 20180522 Address after: 650302 Kunming City, Yunnan Province, Anning Kunming Steel, Chaoyang Road Patentee after: Yunnan Kunming electronic Mdt InfoTech Ltd Address before: 650302 science and technology innovation department, Kunjia steel, Lang Jia Zhuang, Anning City, Kunming, Yunnan Patentee before: Wuhan Iron and Steel Group Kunming Steel Co., Ltd. |
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