WO2008057007A1 - Pocket light provided with an electronic circuit breaker - Google Patents

Abstract

The inventive pocket light provided with an electronic circuit breaker (variants) relates to elecric engineering and to systems for transmitting discrete signals. Said device can be used in the form of a distress message former using 'dot-and-dash' codes, for example the Mose code, in pocket lights and light pointers. Said invention makes it possible to extend the operational capabilities of pocket lights and light pointers with or without modification of the current-conducting parts of the structure.

Description

 POCKET LANTERN AND LIGHT INDICATOR WITH ELECTRONIC

BREAKER

Description of the invention

The invention relates to electrical engineering and systems for transmitting discrete signals. This device can be used as a distress signal generator using dot-dash codes, such as the Morse code, in flashlights and light pointers. The invention extends the functionality of flashlights and light pointers.

Known designs for flashlights with an electronic interrupter, comprising a housing in which the batteries are arranged in series, a cylindrical block with an interrupter and a lamp. Such flashlight designs allow you to use the most common flashlight design with batteries located in one line, without changing the conductive parts of the structure. Closest to the proposed device is the device "Flashlight with an electronic chopper" (USSR Patent N ° 492704, CL F21L 7/00), containing a cylindrical block with contacts from the end sides, a peripheral contact (not present in the invention). The electronic circuit of the known device consists of a multivibrator and a power amplifier and allows you to generate pulsed light signals. A known device can be placed between the batteries, between the lamp and the battery, as well as between the end cap and the battery.

However, the known devices do not allow transmitting distress signals, presented in discrete form, using codes of the type "dot-dash", such as the Morse code.

To expand the functionality of the known device, the electronic circuit of the invention contains logic elements for generating discrete signals.

The advantages and features of the present invention and its variants will be better understood when reading the following description with reference to the drawings, in which: FIG. 1 is a sectional view of a pocket lamp (light pointer); figure 2 - a flashlight (light pointer) with a chopper unit built into the housing in the context; figure 3 - block breaker;

1 SUBSTITUTE SHEET (RULE 26) figure 4 is an electric circuit block interrupter.

Consider figure 1. Along the axis of the housing 1 are batteries 2. As a light source 3, a lamp, LED or laser can be used. Between the batteries there is a cylindrical block 4, in which the elements of the circuit breaker are placed.

The interrupter unit has end contacts 5 and 6. To turn on the flashlight (light pointer), the switch 7 is designed. The batteries are supported by a spring 8.

When the switch 7 is turned on, a potential difference appears between the contacts 6 and 5 of the chopper block.

Consider figure 4. Contacts 6 and 5 of the chopper block are connected to the source and drain of the transistor Ql (the transistor is in the closed state). From the source of the transistor, the voltage through the Schottky diode Dl and resistor R2 is supplied to the capacitor C2 and then through the resistor RЗ to the power inputs of all logic circuits. A multivibrator built on the elements UlA, UlB, U2A, Rl, Cl starts to produce rectangular pulses. These pulses are fed to the binary counter UЗ. The UZ counter has a dual role. Firstly, it is a frequency divider. Secondly, it calculates time steps for the correct formation of the duration of points, dashes and necessary pauses. From the counter U3, the counting sequence is fed to the logical part formed by the elements "NOT" (U4A, U4B, U4C, U4D, U4E), the elements "AND" (U5B, U5C, U6A, U6B, U7A, U7B), the elements "OR" (U8A , U8B, U8C, U8D). As a result of the operation of the logical part, pulses (dots and dashes) corresponding to the word "SOS" (••• - - ••••) in Morse codes are generated at the output of the U8D element. These signals go to the gate of the transistor Ql and open it. The resistance between the source and drain of the transistor (pins 6 and 5 of the chopper) drops and an electric current appears in the circuit of lamp 3, which makes it glow. In pauses between dots and dashes, the voltage across the gate of Ql drops and Ql closes. Lamp 3 goes out. After the entire word "SOS" is transmitted, the U5A logic generates a reset signal for the U3 counter, the counter is reset, the counting sequence starts from the beginning. At those times when the lamp 3 is lit (dots and dashes), the interrupter 4 microcircuits work due to the energy accumulated by the capacitor C2. In this case, it is partially discharged. In the pauses between dots and dashes, capacitor C2 is charged. Capacitor C2 must be large enough (for LED

2 SUBSTITUTE SHEET (RULE 26) lanterns from YuµF, for lanterns with incandescent lamps from YuOFR). The capacitance of the capacitor Cl and the resistance of the resistor Rl are selected so that the duration of the "point" of the Morse code is from 0.3 s to 0.5 s.

The Schottky diode D2 is added to the circuit for ease of use of the chopper block. If the breaker unit is placed in the lamp in an inverted state (pin 5 to the plus of the battery, and pin 6 to the minus), then the device can be used as a regular lamp.

The interrupter can be placed between the lamp and the first battery, between the batteries of the lamp or between the back cover of the lamp and the last battery.

To implement the chopper block, it is necessary to use microcircuits with an ultralow level of energy consumption, for example, manufactured using CMOS technology.

Consider figure 2. The drawing shows a variant of the use of the chopper unit with stationary placement in the housing of a flashlight (light pointer). A similar design requires an additional switch 9. This switch allows you to use the device as a normal flashlight. The electronic circuit of the chopper unit remains unchanged.

The proposed lantern (light pointer) can be used as a distress signal by tourists, climbers, military, sailors, people in a shipwreck, etc.

3 SUBSTITUTE SHEET (RULE 26)

Claims

Claim 1. A flashlight with an electronic chopper in which the batteries are arranged in series, a unit with an electronic chopper and a lamp or LED, or a laser, characterized in that in order to expand the functionality, the chopper block contains a logic circuit that allows the generation of light signals disasters using dot-dash codes, such as Morse code. 2. A flashlight with an electronic chopper according to claim 1, characterized in that the electronic chopper is stationary located in the lamp housing. 3. Light pointer with an electronic chopper, in which the batteries are arranged in series, a unit with an electronic chopper and a lamp or LED, or a laser, characterized in that, in order to expand the functionality, the chopper block contains a logic circuit that allows the generation of light signals disasters using dot-dash codes, such as Morse code. 4. The light pointer with an electronic interrupter according to claim 3, characterized in that the electronic interrupter is stationary located in the housing of the light pointer. 4 SUBSTITUTE SHEET (RULE 26)