SU629456A1

SU629456A1 - Method of measuring photoelectric transducer sensitivity

Info

Publication number: SU629456A1
Application number: SU762350155A
Authority: SU
Inventors: Юрий Николаевич Николаев; Игорь Николаевич Говор; Иван Михайлович Плешаков
Original assignee: Предприятие П/Я В-8584
Priority date: 1976-04-19
Filing date: 1976-04-19
Publication date: 1978-10-25

Description

Изобретение огносигс к радиационной пиромегрии и предназначено дл намерени энергетических параметров излучени и дл автономного измерени чувсгвительности фотоэлектрических преобразователей. The invention is of fires to radiation pyromegry and is intended for the intent of the radiation energy parameters and for the autonomous measurement of the sensitivity of photoelectric converters.

Известен способ измерени чувствитель ности фотоэлектрических преофазоват€ лей: солнечных элементов, фоттодаодов, фо тотранзисгоров и т.п. - путем оценки всех факторов, вли кнцих на коэффициент преобразовани мощности излучени в электрический сигнал С 3A method is known for measuring the sensitivity of photovoltaic pre-phased cells: solar cells, photodiodes, phototransmitters, and the like. - by evaluating all factors affecting the conversion factor of the radiation power into an electric signal C 3

Недостатком известного способа вл53{етс низка точность иэ-за необходимости измерени большого числа независимых параметров, что накапливает суммарную погрешность. Это исключает возможность применени . способа в метрологии дл иэмерени чувствительности фотоэлектрического преобразовател .The disadvantage of the known method is 53 {low accuracy and because of the need to measure a large number of independent parameters, which accumulates the total error. This eliminates the possibility of use. a method in metrology for measuring the sensitivity of a photoelectric converter.

Известен способ измерени чувствитель ности фотоэлектрического преобразовател путем сличени , при котором предварительно измер ют мощность падающего излучени калиброванным приемником, а A known method for measuring the sensitivity of a photoelectric converter by means of a comparison, in which the incident radiation power is preliminarily measured by a calibrated receiver, and

затем подают излучение уже, известной мощности на исследуемый фотоэлектрический преобразователь и измер ют электрический сигнал на его выходе .Then, radiation of already known power is supplied to the photoelectric converter under study and an electrical signal is measured at its output.

Известный способ требует предварительного изк ерени мощности падающего из;- лучени посторонним калиброванным приемником .The known method requires a preliminary measurement of the power of the incident from the - calibrated by an outside calibrated receiver.

Недостатком известных способов вл етс также то, что ими нельз проводить калибровку и периодическую поверку фотоэлектрических , преобразователей в автономной бортовой аппаратуре, а также во вст роенной аппаратуре, например в фотоэлектрических преофазовател х в оптронах.A disadvantage of the known methods is that they cannot calibrate and periodically verify photoelectric converters in autonomous on-board equipment, as well as in built-in equipment, for example, in photoelectric pre-phasers in optocouplers.

Цель изобретени - повышение точнооти измерений.The purpose of the invention is to increase the accuracy of measurements.

Claims

This is achieved by simultaneously with the electrical signal at the output of the photoelectric converter measuring the surface temperature of the photoelectric converter and the electric power output at two predetermined fixed values of load resistance, and the sensitivity of the photoelectric advantage is determined by the obtained values. The drawing schematically shows a device that implements the method. The luminous flux falls on a photoelectric conversion of 1 gel 1, loaded on an adjustable connection. 2. Amp. With a meter 3 measure the signal at the output of the converter. The relative temperature of the photovoltaic converter is measured using a temperature-sensitive element 4, consisting of a differential thermocouple battery connected to a voltmeter. The method is implemented as follows. When the photoelectric converter loaded on the resistance R is illuminated, the current 5j ®f and the relative value of the temperature Cf, its surface, are measured. At the same time, the electric power dissipated for load sig- nal, P, 8, 4 The load resistance R 2 is changed, and the current gn and the temperature Fa are measured again. this ri. where R о is the second fixed resistance value of Hai-ruaki. The sensitivity of the photoelectric converter is determined from the 8B ratio (p; Φ7 where A is the sensitivity of the photoelectric converter; O is the absorption capacity of the photoelectric transducer; B is the electrical signal at the output of the photoelectric converter at the load impedance; f | gf. - relative values of the temperature of the photoelectric converter at the first and second fixations of the load; C p is the electrical power, which is located on the first and second fixed resistances Since the accuracy of measurements of the relative magnitude of the temperature is high and the error does not exceed 0, O1%, and the accuracy of measurement of electrical quantities is even higher, the proposed method has a higher accuracy than the known methods. Using this method of measuring the sensitivity of a photoelectric converter expands the possibilities of its application for example, to calibrate autonomous BS-based and embedded equipment, as well as automate the processes of measuring sensitivity, field ratio The efficient operation of the photoelectric converter in mass production. The invention The method of measuring the sensitivity of a photoelectric transducer by illuminating it and then measuring an electrical signal at the output of the photoelectric transducer, is due to the fact that, in order to minimize the measurement accuracy, simultaneously with the electric signal at the output of the photoelectric transducer, the surface of the photoelectric converter and the released electric power at two predetermined fixed values of the load-resistance, and according to the obtained m m values determined sensitivity of the photoelectric transducer. Sources of information taken into account in the examination: 1. Markov G.M. Infrared receivers. M., Science, 1968, p. 78-82.

2. Scholl J. and others. Infrared radiation receivers. World, M., 1969, p. 148.

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