Method for counting illumination time of illumination equipment

A lighting time and lighting equipment technology, applied in the lighting field, can solve problems such as unusable lighting equipment, unsatisfactory timing accuracy, and equipment damage.

Inactive Publication Date: 2011-09-14
尚雪峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Recording the running time of lighting equipment and storing the time results in electronic memory is the lowest cost method, but when the lighting equipment operates in a wide range of operating environment voltage fluctuations and random power outages, the following problems will exist when the equipment has a long life:
If the application of lighting equipment is large, the equipment damage caused by the loss of time statistical data due to unstable environment is no longer acceptable to users
[0005] 2. The time accuracy of the timing cannot meet the requirements. For example, if the device runs for 10 hours a day and records the time every hour, the error range is [0-10%] just by random power failure.
[0006] 3. The erasing and writing life of electronic memory cannot meet the requirements of lighting equipment. For example, the writing life of on-chip flash is 10,000 times, but the LED lighting is 50,000 hours
[0008] Traditional file systems solve all problems, but are too complex for lighting fixtures
[0009] There is no single design that solves all problems at the same time and is very streamlined

Method used

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  • Method for counting illumination time of illumination equipment
  • Method for counting illumination time of illumination equipment

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Embodiment Construction

[0048] Take the implementation of LED street lights as an example. The average running time of LED street lamps Time_Max=50000 (hours), the estimated minimum running time (hours) Time_Normal=10 under normal conditions, the system requires time precision Time_Precision=1%.

[0049] Physical part

[0050] MCU (130) adopts MC80F7708, and memory (110 and 120) adopts 24LC16 external Flash.

[0051] Calculation parameters

[0052] • Write time period Time_Union=Time_Normal*Time_Precision*2=0.2. Then the time is accumulated every 0.2 hours.

[0053] ● Counter (110) maximum value. The write times of the memory 24LC16 have a maximum lifespan of 10,000 times, and a redundancy is reserved here to set the memory Erase_Time=8000. The minimum erasing unit of the memory is Byte Erase_Size=8. Step_Unit=[Time_Max / (Time_Union×Erase_Time×Erase_Size)]×Erase_Size=[50000 / (0.2×8000×8)]×8=32.

[0054] ●Counter (110) length Cout_Size=Step_Unit / Erase_Size=4 Byte

[0055] ●Timer (121, 122, 123) le...

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Abstract

The invention discloses a method for counting illumination time of illumination equipment, relates to the technical fields of illumination and software programming, and provides a complete solution for counting illumination time in random power failure, voltage fluctuation and other unstable environments. The method comprises a method for calculating a timing cycle and a data storage format through a central control unit (MCU) and an electronic memory, a method for detecting errors and self-recovery, and a timing method. The method solves the practical problems that the unstable environments cause illumination time data errors, the conventional design is low in time accuracy, write life of the electronic memory is mismatched with illumination life of the illumination equipment, and the like.

Description

technical field [0001] The invention relates to the technical field of lighting and the technical field of software programming. Background technique [0002] With the use of lighting equipment, aging phenomena such as light decay gradually appear. Lighting aging is mainly related to the working hours of equipment lighting, such as electronic ballasts, lamp holders, etc., are calculated based on working hours. If the cumulative lighting time of lighting equipment can be counted at low cost, advanced intelligent functions such as light attenuation supplementation, accelerated aging, consistent design of device life, and energy-saving efficiency statistics can be realized. [0003] Recording the running time of lighting equipment and storing the time results in electronic memory is the lowest cost method, but when the lighting equipment operates in a wide range of operating environment voltage fluctuations and random power outages, the following problems will exist when the e...

Claims

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Application Information

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IPC IPC(8): G04F10/00
Inventor 尚雪峰
Owner 尚雪峰
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