CN104007392A - Battery electric quantity detecting and displaying method - Google Patents
Battery electric quantity detecting and displaying method Download PDFInfo
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- CN104007392A CN104007392A CN201410220785.3A CN201410220785A CN104007392A CN 104007392 A CN104007392 A CN 104007392A CN 201410220785 A CN201410220785 A CN 201410220785A CN 104007392 A CN104007392 A CN 104007392A
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Abstract
The invention discloses a battery electric quantity detecting and displaying method. The battery electric quantity detecting and displaying method comprises the following steps of dividing battery electric quantity into multiple electric quantity ranges and presetting one or more electric signals for each battery electric quantity; sampling the battery electric quantity during charging or discharging of a battery; comparing the sampled electric quantity with a battery full electric quantity threshold value to obtain a percentage value of the sampled electric quantity; outputting a corresponding number of electric signals to a control unit according to the electric quantity range corresponding to percentage value, and enabling the control unit to control the corresponding times of intermittent flash or short lighting off of an indicating lamp and show a battery electric quantity state according to the number of the received electric signals. The battery electric quantity is shown through the intermittent flash or short lighting off times of the indicating lamp, multiple indicating lamps are not required to be installed on a power supply, and the manufacturing cost of the power supply is reduced. In addition, a corresponding control circuit is simple and easy. Furthermore, the battery electric quantity range can be judged according to the intermittent flash or short lighting off times of the indicating lamp, and a user can accurately know the electric quality situation of the power supply.
Description
Technical field
The present invention relates to electric detective technology field, especially, relate to a kind of detection display method of battery electric quantity.
Background technology
Along with the fast development of electronic technology, portable electric appts is day by day universal in our life, for example, and mobile phone, notebook computer, panel computer etc.; And the design of portable electric appts is also more and more intelligent, function is become stronger day by day; For example, can surf the Net by smart mobile phone, do shopping, navigate, watch film etc. whenever and wherever possible.Portable electric appts is in the time of these functions of operation, communication module in equipment will be lasting receiving and transmitting signal, the element such as display screen, processor is wanted continuous firing, cause the power consumption of equipment also very large, but due to the portability of portable electric appts, the size of portable electric appts has high requirement, and the capacity of the battery that portable electric appts carries is very limited, is difficult to support electronic equipment long-play.At present, the technological means addressing this problem adopts portable power source to power to electronic equipment exactly.
Portable power source is also a kind of electric weight memory device, after the electric weight of storage uses, needs the normal power supply of charging ability in time; Therefore it is particularly important that, user accurately grasps electric weight situation in portable power source.If it is inaccurate that battery electric quantity shows, user cannot normally use by connecting electronic equipment, or suddenly power-off in user's use procedure, likely causes communicating interrupt, loss of data, even more serious consequence.At present, the portable power source on market is generally to adopt LED light or display screen to indicate the electric weight situation in portable power source, adopt display screen to show that electric weight result is more directly perceived, but cost is higher; Therefore, mainstream technology is in the market generally to adopt LED light to show the electric weight situation in portable power source.The most general way arranges multiple LED light exactly on portable power source, a kind of state of charge of expression that each LED light is corresponding.For example, adopt green LED light to represent that abundant, the red LED light of electric weight in portable power source represents the charge alert in portable power source, yellow LED light represents that portable power source is in charged state etc.Adopt in this way, need to design multiple LED light on portable power source, cost is higher, is unfavorable for the market competition of product; And, control the circuit relative complex of multiple LED light, also there is larger impact for the stability of product.Simultaneously, electric weight in portable power source shows also accurately not directly perceived, for example, when what portable power source was set is 20% electric weight, alarm led pilot lamp is lighted, if but portable power source while only thering is 25% electric weight, alarm led pilot lamp cannot be made corresponding prompting, user charges to portable power source not in time, will affect use, and affects the life-span of portable power source.
Summary of the invention
The object of the invention is to provide a kind of detection display method of battery electric quantity, and to solve in prior art, portable power source adopts multiple LED light to show state of charge, and cost is high, complex structure, and shows not problem accurately directly perceived of result.
For achieving the above object, according to a kind of detection display method that the invention provides battery electric quantity, comprise the following steps:
The electric weight of battery is divided into multiple electric weight scopes, default one or more electric signal that each electric weight scope is corresponding; In the time of battery charge or discharge, the electric weight of battery is sampled; Sampling electric weight and battery Full Charge Capacity threshold value are compared to the percent value of the electric weight that obtains sampling; According to the electric weight scope corresponding to percent value of sampling electric weight, the electric signal of output corresponding number is to control module, and control module illustrates the state of charge of battery according to sudden strain of a muscle or the short corresponding frequency table that goes out between the number control pilot lamp of the electric signal receiving.
Further, the electric weight of battery is divided into the electric weight scope of three electric weight scope: 67%-100%, the electric weight scope of 33%-67%, the electric weight scope of 0%-33%; Under battery charging state, control module output high level signal drives corresponding default 3 electric signal of the electric weight scope of pilot lamp Chang Liang: 67%-100%, and control module is controlled continuous 3 short going out under the normal bright state of pilot lamp after receiving 3 electric signal; Corresponding default 2 electric signal of electric weight scope of 33%-67%, control module is controlled continuous 2 short going out under the normal bright state of pilot lamp after receiving 2 electric signal; Corresponding default 1 electric signal of electric weight scope of 0%-33%, control module is controlled continuous 1 short going out under the normal bright state of pilot lamp after receiving 1 electric signal;
Under battery discharge status, control module output low level signal driver pilot lamp often goes out: corresponding default 3 electric signal of the electric weight scope of 67%-100%, and control module receives to be controlled pilot lamp after 3 electric signal and often goes out and between continuous 3 times, dodge under state; Corresponding default 2 electric signal of the electric weight scope of 33%-67%, control module receives to be controlled pilot lamp after 2 electric signal and often goes out and between continuous 2 times, dodge under state; Corresponding default 1 electric signal of the electric weight scope of 0%-33%, control module receives to be controlled pilot lamp after 1 electric signal and often goes out and between continuous 1 time, dodge under state.
Further, the electric weight of battery is sampled by 3 comparers; Under battery charge or discharge state: when the sampling electric weight electric weight scope that is 67%-100%, 3 equal output electrical signals of comparer are to control module; When the sampling electric weight electric weight scope that is 33%-67%, 2 comparer output electrical signals in 3 comparers are to control module; When the sampling electric weight electric weight scope that is 0%-33%, 1 comparer output electrical signals in 3 comparers is to control module.
Further, the electric weight of battery is divided into the electric weight scope of four electric weight scope: 75%-100%, the electric weight scope of 50%-75%, the electric weight scope of 25%-50%, the electric weight scope of 0%-25%; Under battery charging state, control module output high level signal drives corresponding default 4 electric signal of the electric weight scope of pilot lamp Chang Liang: 75%-100%, and control module is controlled continuous 4 short going out under the normal bright state of pilot lamp after receiving 4 electric signal; Corresponding default 3 electric signal of electric weight scope of 50%-75%, control module is controlled continuous 3 short going out under the normal bright state of pilot lamp after receiving 3 electric signal; Corresponding default 2 electric signal of electric weight scope of 25%-50%, control module is controlled continuous 2 short going out under the normal bright state of pilot lamp after receiving 2 electric signal; Corresponding default 1 electric signal of electric weight scope of 0%-25%, control module is controlled continuous 1 short going out under the normal bright state of pilot lamp after receiving 1 electric signal;
Under battery discharge status, control module output low level signal driver pilot lamp often goes out: corresponding default 4 electric signal of the electric weight scope of 75%-100%, and control module receives to be controlled pilot lamp after 4 electric signal and often goes out and between continuous 4 times, dodge under state; Corresponding default 3 electric signal of the electric weight scope of 50%-75%, control module receives to be controlled pilot lamp after 3 electric signal and often goes out and between continuous 3 times, dodge under state; Corresponding default 2 electric signal of the electric weight scope of 25%-50%, control module receives to be controlled pilot lamp after 2 electric signal and often goes out and between continuous 2 times, dodge under state; Corresponding default 1 electric signal of the electric weight scope of 0%-25%, control module receives to be controlled pilot lamp after 1 electric signal and often goes out and between continuous 1 time, dodge under state.
Further, the electric weight of battery is sampled by 4 comparers; Under battery charge or discharge state: when the sampling electric weight electric weight scope that is 75%-100%, 4 equal output electrical signals of comparer are to control module; When the sampling electric weight electric weight scope that is 50%-75%, 3 comparer output electrical signals in 4 comparers are to control module; When the sampling electric weight electric weight scope that is 25%-50%, 2 comparer output electrical signals in 4 comparers are to control module; When the sampling electric weight electric weight scope that is 0%-25%, 1 comparer output electrical signals in 4 comparers is to control module.
Further, pilot lamp is LED light.
Further, control module is managed (metal-oxide layer-semiconductcor field effect transistor) by Nmosfet and is connected with pilot lamp.
Further, control module is MCU control module.
The present invention has following beneficial effect:
When battery charging and discharging, the electric weight of battery can by between pilot lamp dodge or the short number of times that goes out show, not be used on power supply multiple pilot lamp are set, the manufacturing cost of power supply further reduces; Meanwhile, corresponding control circuit is simple, is beneficial to the serviceable life that extends product, improves the stability of product; And, according to dodging between pilot lamp or the short number of times that goes out can be judged the scope of battery electric quantity, visual result, user more can accurately understand the electric weight situation of power supply.
Brief description of the drawings
Below with reference to figure, the present invention is further detailed explanation.The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the schematic diagram one of electric quantity acquisition module in the present invention; And
Fig. 3 is the schematic diagram two of electric quantity acquisition module in the present invention.
Description of reference numerals:
101, battery; 102, electric quantity acquisition module; 103, charging module; 104, MCU control module; 105, Nmosfet pipe; 106, LED light; 107, comparer.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.
Refer to Fig. 1, the preferred embodiments of the present invention provide a kind of detection display device of battery electric quantity, comprising: the electric quantity acquisition module 102 that the electric weight of battery 101 is sampled and the charging module 103 that battery 101 is charged; Electric quantity acquisition module 102 is all connected with MCU control module 104 with charging module 103, and electric quantity acquisition module 102 is exported one or more electric signal to MCU control module 104, and MCU control module 104 is managed 105 by Nmosfet and connected pilot lamp 106.
Refer to Fig. 2 and Fig. 3, electric quantity acquisition module 102 can adopt three comparers 107 to form, and three comparer 107 one end connect battery 101, and the other end connects MCU control module 104; Or electric quantity acquisition module 102 adopts four comparers 107 to form, four comparer 107 one end connect battery 101, and the other end connects MCU control module 104.Charging module 103 can adopt LTC4054 integrated circuit modules, and circuit is simple, and cost is low.
The preferred embodiments of the present invention provide a kind of detection display method of battery electric quantity, comprise the following steps:
The electric weight of battery is divided into multiple electric weight scopes, for example, the electric weight of 2 electric weight scope: 0%-50%, the electric weight of 50%-100%; The electric weight of the electric weight of 3 electric weight scope: 67%-100%, the electric weight of 33%-67%, 0%-33% etc.; Default one or more electric signal that each electric weight scope is corresponding; In the time of battery charge or discharge, the electric weight of battery is sampled; Sampling electric weight and battery Full Charge Capacity threshold value are compared to the percent value of the electric weight that obtains sampling; According to the electric weight scope corresponding to percent value of sampling electric weight, the electric signal of output corresponding number is to control module, and control module illustrates the state of charge of battery according to sudden strain of a muscle or the short corresponding frequency table that goes out between the number control pilot lamp of the electric signal receiving.
In the time of battery charging and discharging, the electric weight of battery can by between pilot lamp dodge or the short number of times going out show, not be used on power supply multiple pilot lamp are set, the manufacturing cost of power supply further reduces; Meanwhile, corresponding control circuit is simple, is beneficial to the serviceable life that extends product, improves the stability of product; And, according to dodging between pilot lamp or the short number of times going out can be judged the scope of battery electric quantity, visual result, user more can accurately understand the electric weight situation of power supply.
Preferably, the electric weight of battery is divided into the electric weight scope of three electric weight scope: 67%-100%, the electric weight scope of 33%-67%, the electric weight scope of 0%-33%; Under battery charging state, control module output high level signal drives corresponding default 3 electric signal of the electric weight scope of pilot lamp Chang Liang: 67%-100%, and control module is controlled continuous 3 short going out under the normal bright state of pilot lamp after receiving 3 electric signal; Corresponding default 2 electric signal of electric weight scope of 33%-67%, control module is controlled continuous 2 short going out under the normal bright state of pilot lamp after receiving 2 electric signal; Corresponding default 1 electric signal of electric weight scope of 0%-33%, control module is controlled continuous 1 short going out under the normal bright state of pilot lamp after receiving 1 electric signal;
Under battery discharge status, control module output low level signal driver pilot lamp often goes out: corresponding default 3 electric signal of the electric weight scope of 67%-100%, and control module receives to be controlled pilot lamp after 3 electric signal and often goes out and between continuous 3 times, dodge under state; Corresponding default 2 electric signal of the electric weight scope of 33%-67%, control module receives to be controlled pilot lamp after 2 electric signal and often goes out and between continuous 2 times, dodge under state; Corresponding default 1 electric signal of the electric weight scope of 0%-33%, control module receives to be controlled pilot lamp after 1 electric signal and often goes out and between continuous 1 time, dodge under state.
Refer to Fig. 2, preferably, the electric weight of battery is sampled by 3 comparers; Under battery charge or discharge state: when the sampling electric weight electric weight scope that is 67%-100%, 3 equal output electrical signals of comparer are to control module; When the sampling electric weight electric weight scope that is 33%-67%, 2 comparer output electrical signals in 3 comparers are to control module; When the sampling electric weight electric weight scope that is 0%-33%, 1 comparer output electrical signals in 3 comparers is to control module.
Preferably, the electric weight of battery is divided into the electric weight scope of four electric weight scope: 75%-100%, the electric weight scope of 50%-75%, the electric weight scope of 25%-50%, the electric weight scope of 0%-25%; Under battery charging state, control module output high level signal drives corresponding default 4 electric signal of the electric weight scope of pilot lamp Chang Liang: 75%-100%, and control module is controlled continuous 4 short going out under the normal bright state of pilot lamp after receiving 4 electric signal; Corresponding default 3 electric signal of electric weight scope of 50%-75%, control module is controlled continuous 3 short going out under the normal bright state of pilot lamp after receiving 3 electric signal; Corresponding default 2 electric signal of electric weight scope of 25%-50%, control module is controlled continuous 2 short going out under the normal bright state of pilot lamp after receiving 2 electric signal; Corresponding default 1 electric signal of electric weight scope of 0%-25%, control module is controlled continuous 1 short going out under the normal bright state of pilot lamp after receiving 1 electric signal;
Under battery discharge status, control module output low level signal driver pilot lamp often goes out: corresponding default 4 electric signal of the electric weight scope of 75%-100%, and control module receives to be controlled pilot lamp after 4 electric signal and often goes out and between continuous 4 times, dodge under state; Corresponding default 3 electric signal of the electric weight scope of 50%-75%, control module receives to be controlled pilot lamp after 3 electric signal and often goes out and between continuous 3 times, dodge under state; Corresponding default 2 electric signal of the electric weight scope of 25%-50%, control module receives to be controlled pilot lamp after 2 electric signal and often goes out and between continuous 2 times, dodge under state; Corresponding default 1 electric signal of the electric weight scope of 0%-25%, control module receives to be controlled pilot lamp after 1 electric signal and often goes out and between continuous 1 time, dodge under state.
Refer to Fig. 3, preferably, the electric weight of battery is sampled by 4 comparers; Under battery charge or discharge state: when the sampling electric weight electric weight scope that is 75%-100%, 4 equal output electrical signals of comparer are to control module; When the sampling electric weight electric weight scope that is 50%-75%, 3 comparer output electrical signals in 4 comparers are to control module; When the sampling electric weight electric weight scope that is 25%-50%, 2 comparer output electrical signals in 4 comparers are to control module; When the sampling electric weight electric weight scope that is 0%-25%, 1 comparer output electrical signals in 4 comparers is to control module.
Preferably, pilot lamp adopts LED light, and control module is managed with pilot lamp and is connected by Nmosfet, and control module is MCU control module.
In actual design process, it is comparatively preferred schemes that the electric weight of battery is divided into three or four electric weight scopes, on the one hand, dodges and show that number of times and state are less between pilot lamp, is easy to user and remembers; On the other hand, electric weight scope is rationally interval, and the electric weight of expressing can be given the rational reference of user.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
When battery charging and discharging, the electric weight of battery can, by dodging between pilot lamp or the short number of times demonstration of going out, not be used on power supply multiple pilot lamp are set, and the manufacturing cost of power supply further reduces; Meanwhile, corresponding control circuit is simple, is beneficial to the serviceable life that extends product, improves the stability of product; And, according to dodging between pilot lamp or the short number of times that goes out can be judged the scope of battery electric quantity, visual result, user more can accurately understand the electric weight situation of power supply.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention; For a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a detection display method for battery electric quantity, is characterized in that, comprises the following steps:
The electric weight of battery is divided into multiple electric weight scopes, default one or more electric signal corresponding to electric weight scope described in each;
In the time of described battery charge or discharge, the electric weight of described battery is sampled;
Sampling electric weight and described battery Full Charge Capacity threshold value are compared, obtain the percent value of described sampling electric weight;
The described electric weight scope corresponding according to the percent value of described sampling electric weight, the described electric signal of output corresponding number is to control module, and described control module illustrates the state of charge of described battery according to sudden strain of a muscle or the short corresponding frequency table that goes out between pilot lamp described in the number control of the described electric signal receiving.
2. the detection display method of battery electric quantity according to claim 1, is characterized in that:
The electric weight of described battery is divided into the electric weight scope of three electric weight scope: 67%-100%, the electric weight scope of 33%-67%, the electric weight scope of 0%-33%;
Under described battery charging state, described control module output high level signal drives described pilot lamp Chang Liang:
Corresponding default 3 the described electric signal of electric weight scope of described 67%-100%, described control module is controlled continuous 3 short going out under the normal bright state of described pilot lamp after receiving 3 described electric signal;
Corresponding default 2 the described electric signal of electric weight scope of described 33%-67%, described control module is controlled continuous 2 short going out under the normal bright state of described pilot lamp after receiving 2 described electric signal;
Corresponding default 1 the described electric signal of electric weight scope of described 0%-33%, described control module is controlled continuous 1 short going out under the normal bright state of described pilot lamp after receiving 1 described electric signal;
Under described battery discharge status, pilot lamp often goes out described in described control module output low level signal driver:
Corresponding default 3 the described electric signal of the electric weight scope of described 67%-100%, described control module receives to be controlled described pilot lamp after 3 described electric signal and often goes out and between continuous 3 times, dodge under state;
Corresponding default 2 electric signal of the electric weight scope of described 33%-67%, described control module receives to be controlled described pilot lamp after 2 described electric signal and often goes out and between continuous 2 times, dodge under state;
Corresponding default 1 the described electric signal of the electric weight scope of described 0%-33%, described control module receives to be controlled described pilot lamp after 1 described electric signal and often goes out and between continuous 1 time, dodge under state.
3. the detection display method of battery electric quantity according to claim 2, is characterized in that:
The electric weight of described battery is sampled by 3 comparers;
Under described battery charge or discharge state:
When electric weight scope that described sampling electric weight is 67%-100%, 3 equal output electrical signals of described comparer are to described control module;
When electric weight scope that described sampling electric weight is 33%-67%, 2 described comparer output electrical signals in 3 described comparers are to described control module;
When electric weight scope that described sampling electric weight is 0%-33%, 1 described comparer output electrical signals in 3 described comparers is to described control module.
4. the detection display method of battery electric quantity according to claim 1, is characterized in that:
The electric weight of described battery is divided into the electric weight scope of four electric weight scope: 75%-100%, the electric weight scope of 50%-75%, the electric weight scope of 25%-50%, the electric weight scope of 0%-25%;
Under described battery charging state, described control module output high level signal drives described pilot lamp Chang Liang:
Corresponding default 4 the described electric signal of electric weight scope of described 75%-100%, described control module is controlled continuous 4 short going out under the normal bright state of described pilot lamp after receiving 4 described electric signal;
Corresponding default 3 the described electric signal of electric weight scope of described 50%-75%, described control module is controlled continuous 3 short going out under the normal bright state of described pilot lamp after receiving 3 described electric signal;
Corresponding default 2 the described electric signal of electric weight scope of described 25%-50%, described control module is controlled continuous 2 short going out under the normal bright state of described pilot lamp after receiving 2 described electric signal;
Corresponding default 1 the described electric signal of electric weight scope of described 0%-25%, described control module is controlled continuous 1 short going out under the normal bright state of described pilot lamp after receiving 1 described electric signal;
Under described battery discharge status, pilot lamp often goes out described in described control module output low level signal driver:
Corresponding default 4 the described electric signal of the electric weight scope of described 75%-100%, described control module receives to be controlled described pilot lamp after 4 described electric signal and often goes out and between continuous 4 times, dodge under state;
Corresponding default 3 the described electric signal of the electric weight scope of described 50%-75%, described control module receives to be controlled described pilot lamp after 3 described electric signal and often goes out and between continuous 3 times, dodge under state;
Corresponding default 2 the described electric signal of the electric weight scope of described 25%-50%, described control module receives to be controlled described pilot lamp after 2 described electric signal and often goes out and between continuous 2 times, dodge under state;
Corresponding default 1 the described electric signal of the electric weight scope of described 0%-25%, described control module receives to be controlled described pilot lamp after 1 described electric signal and often goes out and between continuous 1 time, dodge under state.
5. the detection display method of battery electric quantity according to claim 4, is characterized in that:
The electric weight of described battery is sampled by 4 comparers;
Under described battery charge or discharge state:
When electric weight scope that described sampling electric weight is 75%-100%, 4 equal output electrical signals of described comparer are to described control module;
When electric weight scope that described sampling electric weight is 50%-75%, 3 described comparer output electrical signals in 4 described comparers are to described control module;
When electric weight scope that described sampling electric weight is 25%-50%, 2 described comparer output electrical signals in 4 described comparers are to described control module;
When electric weight scope that described sampling electric weight is 0%-25%, 1 described comparer output electrical signals in 4 described comparers is to described control module.
6. according to the detection display method of the battery electric quantity described in claim 1-5 any one, it is characterized in that:
Described pilot lamp is LED light.
7. according to the detection display method of the battery electric quantity described in claim 1-5 any one, it is characterized in that:
Described control module is managed with described pilot lamp and is connected by Nmosfet.
8. the detection display method of battery electric quantity according to claim 7, is characterized in that:
Described control module is MCU control module.
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|---|---|---|---|
| CN201410220785.3A CN104007392B (en) | 2014-05-23 | 2014-05-23 | Battery electric quantity detecting and displaying method |
| PCT/CN2015/071774 WO2015176554A1 (en) | 2014-05-23 | 2015-01-28 | Battery power detection display method and device |
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| CN201410220785.3A CN104007392B (en) | 2014-05-23 | 2014-05-23 | Battery electric quantity detecting and displaying method |
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| WO2015176554A1 (en) * | 2014-05-23 | 2015-11-26 | 无锡英诺浦斯微电子有限公司 | Battery power detection display method and device |
| CN107247238A (en) * | 2017-06-12 | 2017-10-13 | 无锡华阳科技有限公司 | A kind of detection display methods for battery of electric vehicle electricity |
| CN107370200A (en) * | 2017-06-28 | 2017-11-21 | 广东顺德奥能光电科技股份有限公司 | A kind of new succinct charge display method |
| CN110236227A (en) * | 2019-05-10 | 2019-09-17 | 深圳市乐瑞达科技有限公司 | Device for flue-cured tobacco control method, device and device for flue-cured tobacco |
| CN110988585A (en) * | 2019-10-21 | 2020-04-10 | 北京全路通信信号研究设计院集团有限公司 | Compensation capacitor fault online diagnosis device and method based on Internet of things |
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| CN111366851A (en) * | 2020-04-17 | 2020-07-03 | 佛山职业技术学院 | High-precision battery electric quantity indication method, battery and storage medium |
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| CN110988585A (en) * | 2019-10-21 | 2020-04-10 | 北京全路通信信号研究设计院集团有限公司 | Compensation capacitor fault online diagnosis device and method based on Internet of things |
| CN111240136A (en) * | 2020-03-14 | 2020-06-05 | 深圳市同创依诺数码科技有限公司 | Projection system with intelligent heat dissipation function |
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