Automatic Modbus protocol testing method for testing light distribution performance of lamp
A technology for light distribution performance and automatic testing, applied in the direction of testing optical performance, etc., can solve the problems of real-time performance, insufficient reliability, and lack of unity, and achieve the effect of easy popularization and application, strong unity, and simple test form.
Inactive Publication Date: 2014-08-06
李伟
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[0005] Internationally, the fieldbus control technology is developing rapidly. In my country, the fieldbus control technology represented by smart instruments has just started. Traditional analog instruments often use RS-232 or RS-485 physical bus to realize control communication connection, but in terms of real-time, reliable There are deficiencies in terms of reliability and other aspects. At present, a unified bus standard has not been formed in China. It can only introduce and digest and absorb a variety of foreign bus standards. The Modbus protocol was developed by Modicon Corporation of the United States. 485 and Ethernet devices, compared with other buses, have better hardware versatility, higher reliability and performance-price ratio. A large number of industrial equipment are using the Modbus protocol as the communication standard between each other, and the Modbus control equipment produced by different manufacturers is interconnected into a Modbus industrial monitoring network. Most of the new photometric sensor devices have Modbus protocol interface. , to facilitate the formation of a photometric sensor photometric sensor network, the use of digital quantities can effectively overcome the problem of insufficient transmission accuracy of long-distance analog quantities, and can effectively improve the anti-interference performance of the light distribution performance detection system
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[0024] As an embodiment of the present invention, referring to Fig. 1, it is an organizational structure diagram of the present invention, a Modbus protocol automatic testing method for light distribution performance detection of lamps, and the automatic test system for light distribution performance includes a host computer 1 and an electrical control cabinet 2 , light distribution detection platform 3, light metering curtain 4, photometric sensor set 5, digitalized file of national light distribution standard specification in custom format 6, upper computer 1 is connected with electrical control cabinet 2, photometric sensor set 5 through Modbus communication cable , the electrical control cable of the electrical control cabinet 2 is connected with the stepping motors of the light distribution detection table 3 and the light measurement curtain 4, and two stepping motors are used to control the displacement of the light distribution detection table in the X and Z directions, o...
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The present invention designs a Modbus protocol automatic test method for light distribution performance detection of lamps, including a host computer 1, an electrical control cabinet 2, a light distribution detection platform 3, a light measurement curtain 4, a photometric sensor set 5, and a national distribution in a custom format. The digitalized file 6 of the light standard specification, the lamp is installed on the light distribution detection platform 3, the upper computer 1 analyzes and processes the digital file 6 of the national light distribution standard specification in a custom format, and transmits X, Y, Z to the electrical control cabinet 2 through the Modbus cable The three-direction stepping motor drives the switching signal, and the electric control cabinet 2 drives the stepping motors in the X and Z directions of the light distribution detection platform 3 and the stepping motor in the Y direction of the light metering curtain 3 to the specified position. The photometric sensor set 5 detects the luminosity of the lamps on the photometric detection platform 3 in real time, and realizes data transmission through the Modbus bus. The host computer 1 automatically obtains the photometric performance test data of the lamps, which can effectively improve the efficiency and accuracy of the photometric performance test.
Description
technical field [0001] The invention belongs to a method for testing the light distribution performance of a lamp, in particular to a method for automatically testing the light distribution performance of a lamp with a Modbus protocol applicable to a computer. Background technique [0002] Lamps play a key role in the lighting process. The nature of the light emitted by the lamps and the control of the light depend on the type of light source, the reflective and light-transmitting system of the lamps, etc. In order to ensure the quality of the lamps, the country has different types of lamps for different purposes. Corresponding national mandatory standards, light distribution performance testing is a key basis for whether the spatial distribution of light emitted by a lamp or its light source meets the current national mandatory standards. There are generally the following four methods for testing the light distribution performance of lamps: manual point-by-point test method...
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IPC IPC(8): G01M11/02
Inventor李伟
Owner李伟