ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 6, pp. 109-115

Thermoelectric photodetector cooling system for high precision star sensor

E.V. Belinskaya 1 , R.V. Bessonov 1 , N.N. Brysin 1 , S.V. Voronkov 1 , S.A. Prokhorova 1 , N.A. Stroilov 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 09.11.2021
DOI: 10.21046/2070-7401-2021-18-6-109-115
The work is devoted to the application of thermoelectric cooling in devices intended for use in outer space. In the course of the work, a mock-up of a star sensor with an image receiver and a lens was assembled, with the help of which the required temperature range for the operation of the image receiver was determined. The cooling system must provide this temperature range. The substantiation of the decisions made in the development of the thermoelectric cooling system of the image receiver is given. Working with thermoelectric modules revealed cases of their failure. To detect the malfunction of the modules, two methods of testing the operability of the cooling system were developed. The first of them is carried out over the entire operating temperature range and involves the use of high-tech equipment. The second is an express check and allows you to assess the health of the modules by indirect parameters. An experiment was carried out to study the operation of the cooling system of the image receiver in conditions close to operational, that is, space. The paper presents a diagram of the experimental setup, describes the set temperature conditions and the results of the experiment. To test the cooling system control algorithm, a mathematical model of the star sensor temperatures was developed. The model was based on the data obtained in the course of experiments to study the operation of TESO. The cooling system control algorithm has been successfully tested in a thermal vacuum chamber.
Keywords: thermoelectric cooling, star sensor, Peltier effect
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