RU1777789C - Miner's helmet with individual radio communication system - Google Patents

Abstract

Use as personal protective equipment. SUMMARY OF THE INVENTION 1, a personal protective helmets with individual radio communications includes a radio receiver with an antenna mounted in the helmet body and connected to a telephone capsule. The helmet body is additionally provided with acoustic channels made in the form of a flat curved horn to provide connection of the telephone capsules to the location of the front part of the subscriber’s auricle when placing the helmet on his head. The cross section of the acoustic channels of a larger area is located on the side of the subscriber’s auricle, and the smaller is located on the telephone capsule, which is located in the helmet body, 2 il.

Description

The invention relates to devices for mine radio communication for individual use v is intended for use in the treatment and preparation faces of coal and other mines, where personal protective measures should be provided to prevent injury to the subscriber’s head during technological operations by falling pieces of rock or other objects in cramped mining conditions.

The device can be used in other industries where it is necessary to use individual means of communication in conditions of increased danger to the subscriber (construction, installation work and central heating).

Known protective helmet (helmet), with a professional connected radio station mounted in it, freeing

the subscriber’s hands while performing technological operations for military and civilian use by Antophon (Switzerland), in which the telephone capsule is attached to the helmet body using a special bracket, protrudes significantly beyond the helmet’s dimensions and covers the subscriber’s auricle. This design of the helmet with a radio station allows you to create the necessary sound pressure of a useful telephone signal by bringing the telephone capsules directly to the subscriber’s ear and using an earphone that disguises production noise, which is unacceptable in areas of increased danger, such as coal mine faces, and makes it difficult the use of such a protective helmet.

Closest to the technical nature of the alleged invention vj vj 00 H)

There is a helmet with a radio station for downhole signaling, communication and blocking equipment type EST-2 from Tesla (Czechoslovakia).

The disadvantages of the known device are: the need to mow the capsules over the helmet body dimensions to place them in close proximity to the subscriber’s auricle to create the necessary sound pressure level of the useful signal, low useful sound signal / noise ratio due to the absence of an acoustic system, usually provided by the emitters sound (headphones), disguising industrial and technological noise with a snap-in, which houses telephone capsules covering the auricles cient, which is unacceptable in mines, especially in clearing and preparatory Zabo's coal mines since this weakens the alertness of the subscriber, who must respond to noises and sounds of near or imminent danger, increased helmet dimensions.

The aim of the invention is to remedy these disadvantages of the known prototype device, namely, increasing the sound pressure of the useful acoustic signal, increasing the sound pressure of the useful acoustic signal, increasing the signal-to-noise ratio near the front of the subscriber’s auricle, reducing the overall dimensions of the helmet in the absence of masking production noise .

To achieve this goal, the helmet body, in the special cavities of which a radio receiver with an antenna is mounted, the output of which is connected to the telephone capsule, is additionally equipped with acoustic channels made, for example, in the form of a curved flat horn, which are elements of the helmet housing and connecting the telephone capsule to the location of the front of the subscriber’s auricle when placing a helmet on the head of the latter, the cross section of the tangent acoustic channels of a larger area being located at Rhone subscriber auricle, and at - the primer in the telephone, which is disposed in the helmet body; when placing telephone capsules at the top of the helmet’s dome, acoustic channels can be made open or half-open without an internal wall in the helmet’s cavity,

The set of essential distinguishing features of the invention, with the exclusion of any of which

impossible to obtain a positive effect are:

the presence of acoustic channels in the body of the miner's protective helmet, which are integral elements of the helmet body, and the placement of telephone capsules directly in the helmet body;

direction and arrangement of acoustic channels in the housing so that

they connect the location of the telephone capsules to the front of the subscriber’s auricle, enabling the transmission of low-loss speech signals;

the shape of the acoustic channels expanding from the telephone capsule to the subscriber’s auricle, for example, by exponential law.

Without the presence of acoustic channels in the helmet, it is impossible to take the telephone capsules from the subscriber’s auricle, place them directly in the helmet’s body, and reduce the overall dimensions of the helmet, as the necessary sound pressure in front of the subscriber’s auricle will not be reached, at which the useful signal may exceed the extraneous noise to assure speech perception.

The direction and location of the acoustic channels in the helmet body provides an acoustic signal connection of the telephone capsules and the location of the front of the subscriber’s ears, as

only such a direction and placement of acoustic channels provides broadcasting with low loss of sound signals from the telephone capsule to the subscriber’s auricle.

The expanding cross-section of the acoustic channels in the helmet body in the direction from the telephone capsules to the subscriber’s ear allows when placing telephone capsules in the helmet

to obtain, at the location of the subscriber’s auricle, when placing the helmet on the head of the latter, the necessary level of the useful sound signal and the signal-to-noise ratio for reliable speech perception,

The exclusion of any of the listed essential feature from the totality makes the proposed device inoperative and does not allow to achieve a positive effect.

At the same time, the place of the helmet body in which the telephone capsule is placed does not have significant significance, therefore, in claim 2 of the claims for the alleged invention

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The boot also concerns the design of the channels, which, if capsules are placed in the housing of the cartridge, can be made half-open, as The helmet body itself acts as a directional sound guide.

In Fig.1 and 2 presents the proposed device (DPZ options).

The device consists of a miner's plastic helmet, in the housing 1 which is a radio receiver 2 — radios with an antenna (not shown conventionally in the figure) and a telephone capsule 3. Acoustic channels are laid in the helmet housing 1 4. connecting the telephone capsule with the 3rd front location parts of the subscriber’s auricle when placing a helmet on the latter’s head.

Figures la, b show an embodiment of placing telephone capsules 3 in a helmet visor and laying acoustic channels 4 along the fields of the helmet body 1;

FIGS. 2a, b show an embodiment of placing telephone capsules 3 in the dome of helmet helmet 1 and laying acoustic channels 4 along the lateral (temporal) surfaces of housing 1. The cross-section of acoustic channels 4 increases in the direction from telephone capsules 3 to the auricle of the operator . There can be two telephone capsules 3; in this case, each acoustic capsule 3 has its own acoustic channel 4, which is not essential for the invention.

Acoustic channels have such dimensions and configuration that ensure the preservation of annular and vertical safe gaps.

Moreover, depending on the manufacturing technology of the helmet body 1 and the method of laying the acoustic channels 4, the latter can act as stiffeners serving to increase the strength of the helmet body 1.

The device operates as follows.

When receiving high-frequency modulated signals from radio receivers 2 of the cash register radio station, low-frequency acoustic speech signals are reproduced by the telephone capsule 3 and through the acoustic channels 4 laid in the helmet body 1, it arrives at the location of the front part of the subscriber’s auricle when the helmet with the radio station on the head’s head is located , simultaneously reinforced by increasing the cross section of the acoustic channels 4, which may be

executed, nlprimrr "reed togkopmmp bent ruporch

When placing telephone capsules 3 in the upper part of the dome of the helmet housing 1

(figure 2) the acoustic channels can be made open or half-open type with an absent or partially absent wall on the inside of the helmet body (in Fig.2 the wall of the acoustic channel

0 is indicated by a dotted line)

In this case, the acoustic channels 4 together with the helmet body 1 form a kind of horn that amplifies the useful sound signal of the output low-frequency

5 signal of the radio 2 located in the helmet.

The location of the telephone capsules of the output low-frequency path of the receiver of the helical radio station directly in the helmet body, the introduction of acoustic channels of increasing cross section, laid in the helmet body from the telephone capsules to the location of the front part of the user's ear shell when the helmet is located with the radio station on the head’s head, allows the limited power of the low-frequency output path of the radio receiver of the helix radio station - increase the sound pressure and obtain the necessary imoe signal / noise ratio for discriminating conversational sensing signal to reduce the size and improve the usability helmet using the helmet with

5 radio station, as telephone capsules do not protrude beyond the dimensions of the helmet body and do not interfere with the perception of industrial and technological noise in the intervals between reception of telephone signals, i.e.

0 to obtain the beneficial effect achieved by the use of the claimed invention.

The proposed miner helmet with radio for individual communication

5 was developed and manufactured as a part of experimental samples of a radio communication, information and control complex of the KRAS type for automated complexes of coal mines.

0 The apparatus of high-frequency individual communication of the KRAS type using the proposed device has successfully passed bench and shaft tests.

Tests have shown that when using DEMSH-1a (2 pcs.) As telephone capsules, placing them in a helmet and laying the proposed acoustic channels in the mine helmet design described above with a radio station for individual communication,

near the subscriber’s auricle, sound pressure with a thrust of 75 80 db, depending on the configuration of the acoustic channels and their arrangement in the helmet body.

The annual economic effect of applying the proposed invention as a part of one set of radio communication equipment of the KRAS complex (5 helical radio stations) is more than 5 thousand rubles.

On the basis of bench tests and mine tests of the communications equipment of the KRAS complex, a technical task was developed (including for a miner helmet for individual radio communications) for R&D and serial production of equipment.

A professionally recognized radio station is mounted on the base object, mounted in a protective helmet (helmet) from Antophon (Switzerland).

The advantages of the claimed technical solution in comparison with the basic way are that due to the appropriate design of the helmet with the built-in radio station, the sound pressure increases and the necessary signal-to-noise ratio is achieved for intelligible reception of the spoken signal, the dimensions of the miner's protective helmet are reduced radio station and does not mask production noises.

The usability of the helmets with the radio station for private radio communications is enhanced.

0

The socially useful advantage is that the safety of miners in mines hazardous by gas and dust, by sudden emissions, is increased. directly to each miner equipped with a helmet with a receiver located in it, a warning signal is given to turn on or start moving the downhole machines and mechanisms, as well as emergency warning signals and at the same time production noise is not masked.

Claims (1)

The claims A miner's protective helmet with individual radio communication, including a radio receiver with an antenna mounted in the helmet body and connected to a telephone capsule, characterized in that, with In order to increase the sound pressure of the useful acoustic signal and increase the signal-to-noise ratio, the helmet body is additionally equipped with acoustic channels made in the body of the helmet in the form a curved flat horn for connecting the telephone capsule to the location of the front of the subscriber’s ear when placing the helmet on his head, the larger section of the acoustic channels is located on the subscriber’s side, and the smaller is the telephone capsule, which is located in the helmet.  $ Pui.-f 9ur.2