RU2728203C1 - Photometric device - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to control means. Photometric detector for determining the degree of hand tremor frequency includes photocells. First, second, third photocells, which form sides of rectangles of small, medium and long length, respectively, are connected to first, second, third capacitors, respectively connected to first, second, third low frequency amplifiers, connected to rectifier, which output is connected to relay winding, through contacts of which electric power source is connected to lamp.

EFFECT: technical result consists in providing the possibility of determining the degree of hand tremor photometric device.

1 cl, 3 dwg

Description

The invention can be used in medicine.

Known photometric device consisting of photocells (LS Zhdanov, VA Maradzhan. Physics course. Part 2. Science. Moscow. 1976, pp. 528-530).

However, this photometric device cannot detect the degree of shake in a person's hand.

The technical result of the invention is to determine the degree of frequency of shaking of a human hand by a photometric device.

The specified technical result is achieved in that the photometric detector for determining the degree of frequency of shaking hands consists of photocells and differs in that the first, second, third photocells forming the sides of rectangles, respectively, of small, medium, large length are connected, respectively, with the first, second, third capacitors connected respectively to the first, second, third low-frequency amplifiers connected to a rectifier, the output of which is connected to the relay coil, through the contacts of which the power source is connected to the light bulb.

Figure 1 shows a front view of the photometric device.

Figure 2 shows a photometric device side view, section.

Figure 3 shows an electrical diagram of a photometric device.

The photometric device has the following design. On the front wall of the housing 1, which has a cover 2, the first photocells 3 are located, forming the sides of a rectangle of small length. Around the first photocells 3 are located the second photocells 4, forming the sides of a rectangle of medium length. Around the second photocells 4 are located the third photocells 5, forming the sides of a rectangle of great length. The first photocells are wired in parallel with the resistor 6 and in series with the first capacitor 7. The second photocells 4 are wired in parallel with the resistor 8 and in series with the second capacitor 9. The third photocells 5 are connected in parallel with the resistor 10 and in series with the third capacitor 11. The first capacitor 7 is connected wire with the first low frequency amplifier 12. The second capacitor 9 is connected to the second low frequency amplifier 13. The third capacitor 11 is connected by wire to the third low frequency amplifier 14. The low frequency amplifiers 12, 13 and 14 are connected by wires to the rectifier 15. The rectifier 15 is connected to the winding relay 16. The power source is connected to the terminals 17 located on the cover 2 of the housing 1. With the terminals 17 wires, the power source through the normally open contacts of the relay 16 is connected to the light 18 fixed on the back wall of the housing 1. Resistors, capacitors, low frequency amplifiers, a rectifier 15 and relay 16 closed Are attached to the side wall of the housing 1.

The photometric device is used as follows. The man in the neurologist's office holds out his hand. The light source falls through the hand onto the front wall of the body 1. If a person's nervous system is not disturbed, then the degree of frequency of tremors of their hands is small. Light with a low frequency falls on the first photocells 3, then on the second photocells 4, then on the third photocells 5. These photocells generate alternating electric currents of low frequency. Direct currents pass through resistors 6, 8 and 10 from one pole to the other. The alternating currents pass through the capacitors 7, 9 and 11, respectively, to the low-frequency amplifiers 12, 13 and 14. Since the frequency of the alternating currents is small, the capacitors will be of great resistance for them. Therefore, low-frequency amplifiers are supplied with electric currents of small strength. Amplifiers of low frequency 12, 13 and 14 amplify alternating electric currents, which are supplied to the rectifier 15. After the rectifier 15, a constant electric current flows to the relay coil 16. But this electric current is not very strong. Therefore, the normally open contacts of relay 16 do not switch. Electric current from terminals 17 does not go to light bulb 18. If after a while a person's nervous system is disturbed, then the degree of frequency of tremors of their hands becomes large. The capacitors 7, 9, 11 receive high frequency alternating electric currents. For these electric currents, capacitors do not have much resistance. Therefore, electric currents of considerable strength are supplied to low-frequency amplifiers. After the low-frequency amplifiers, high-intensity alternating electric currents are fed to the rectifier 15. After the rectifier, high-strength direct current flows to the relay 16. Relay 16 is triggered. Its normally open contacts are closed. Electric current from terminals 17 goes to light bulb 18. Light bulb 18 lights up, indicating a violation of the nervous system.

The use of the claimed photometric device makes it possible to determine the frequency of hand shake.

Claims (1)

A photometric detector for determining the degree of frequency of hand tremors, consisting of photocells, characterized in that the first, second, third photocells forming the sides of rectangles, respectively, of small, medium, long length, are connected respectively to the first, second, third capacitors connected respectively to the first, the second, third low frequency amplifiers connected to a rectifier, the output of which is connected to the relay coil, through the contacts of which the power source is connected to the light bulb.

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