RU175411U1 - ELECTRONIC PHOTOMETER - Google Patents

Abstract

The utility model relates to devices for measuring the brightness of the surfaces of food products, materials, products, light sources and monitor screens. The device comprises a housing, on the external side of which a button is fixed, a power indicator and a lighting head of the lighting-receiving unit, characterized in that a programmable microcontroller is fixed on the external side of the housing, the device also contains a sensor, cable, monitor, LEDs in white, red, blue, and green colors that illuminate the test surface. The technical result is to increase the efficiency and objectivity of the measurements of equivalence and brightness of the surface with small dimensions. 1 ill.

Description

The utility model relates to devices for measuring the brightness of the surfaces of food products, materials, products, light sources and monitor screens.

Known photometer VFM-57 (Visual photometer of low brightness VFM-57) [1], designed to visually compare the brightness of two photometric fields, one of which is measured, the other is the comparison field used for the prototype utility model, which consists of a body, block power supply of the lighting-receiving unit and measuring head. The disadvantage is cumbersome, biased measurements and the need to connect to an AC 220 V.

The technical task of the utility model is to increase the efficiency and objectivity of measuring equivalence and brightness of the surface with small dimensions.

The technical task is carried out due to the fact that the electronic photometer contains a housing, a button is fixed on the outside, the power indicator and the lighting head of the lighting-receiving unit are different in that the programmable microcontroller is rigidly fixed on the outside of the housing made of impact-resistant plastic, after switching it on and off LEDs of white, red, blue and green colors that illuminate the test surface, and reflected light is detected by a photosensitive sensor, It converts proportionally to the magnitude of the light intensity into electric current and transmits it through a cable for analysis to a programmable microcontroller, which transmits data to the monitor in alphanumeric format as a result of measuring the brightness of surfaces.

The proposed electronic photometer is illustrated in Fig., Which shows: pos. 1 - power supply; pos. 2 - case; pos. 3 - monitor; pos. 4 - cable; pos. 5 - nest; pos. 6 - lighting and receiving unit; pos. 7 - wire; pos. 8 - power indicator; pos. 9 - button; pos. 10 - USB cable; pos. 11 - programmable microcontroller.

The electronic photometer contains a housing (2) (as an option, made of impact-resistant plastic), a programmable microcontroller (11) and a socket (5) are rigidly fixed inside, and a monitor (3) is installed on the outside. The power supply unit (1) and the lighting-receiving unit (6) are fixed together and can be disconnected from the housing and connected to it via a cable (4) and a wire (7) on the outside, a button (9) and a power indicator (8) are fixed. Power supply (1) (as an option, four AA alkaline batteries of 1.5 V each). Socket (5) (as an option, for mini-USB cable). The monitor (3) (as an option, the MT-16S2H digital liquid crystal display alphanumeric 16 characters 2 lines) is rigidly fixed to the programmable microcontroller (11). Software microcontroller (11) (as an option, programmable "Arduino Uno ATmega328"). Cable (4) (as an option, 8-core) for turning LEDs on and off and transmitting a signal from the photosensitive unit to a programmable microcontroller (11). Wire (7) (as an option, 2-core copper wire 0.1 mm ² in insulation). Power indicator (8) (as an option, green LED). Button (9) to turn on / off the photometer. USB cable (10) (as an option, mini-USB on one side and standard USB on the other for connecting to a computer). The lighting-receiving unit (6) (as an option, consists of 4 LEDs in white, red, blue, green and a photosensitive sensor) is fixed inside the housing (2).

The electronic photometer works as follows: turn on the power supply (1) with the button (9), the power indicator (8) lights up in green. The supply voltage is supplied via wire (7) to the programmable microcontroller (11), to the monitor (3) and to the lighting-receiving unit (6). The programmable microcontroller (11) operates according to the algorithm of the program previously downloaded via a USB cable (10) from the computer. On the monitor (3), programmed by the microcontroller (11), “GOTOV” is displayed - readiness for work. The lighting-receiving unit (6) is applied to the surface of the studied object (food product, materials, products), the brightness of the surface of which is measured, or directed to the object (workplace), the illumination of which must be measured. The programmable microcontroller (11) sequentially through the cable (4) turns on and off the white, red, blue and green LEDs located in the lighting-receiving unit (6). The light reflected from the surface under investigation is captured by a light-sensitive sensor located in the lighting-receiving unit (6), where it is converted into a current proportional in strength, which is transmitted via cable (4) to the programmable microcontroller (11), where it is digitized and transmitted to the monitor according to a given algorithm (3) in alphanumeric format. On the monitor (3), the number and name of the color of the LED on are displayed in two lines in succession; the digital value of the brightness received by the photosensitive sensor for a given color is the result of measuring the equivalent surface brightness (illumination of the workplace), as well as the total brightness value in four colors.

An experiment on the basis of the Volsk Institute of Material Support (Volsk) in October 2016 showed the effectiveness of using a technical solution, the device is convenient to use, mobile, practical and allows you to determine the quality of the goods with high accuracy.

The proposed technical solution improves the efficiency and objectivity of the measurements of equivalence and brightness of the surface with small dimensions. It can be used in determining the quality of food in the dining rooms of military units.

Literature:

1. Photometer VFM-57 [Electronic resource] http://standart-m.com.ua/izmeritelnye-pribory/lyuksmetry/fotometr-vfm-57.

Claims (1)

An electronic photometer containing a housing, a button, a power indicator and a lighting head of the lighting-receiving unit are fixed on the outside, characterized in that a programmable microcontroller is rigidly fixed on the outside of the housing made of impact-resistant plastic, and after switching it on, it turns on and off the white, red, blue LEDs and green, which illuminate the test surface, and the reflected light is captured by a photosensitive sensor, converts in proportion to the magnitude of the force with voltage into an electric current and is transmitted through a cable for analysis to a programmable microcontroller, which transmits data to the monitor in alphanumeric format as a result of measuring the brightness of surfaces.

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