RU2328773C2 - Method and mechanism for contact-free process initiation of fire and security alarm equipment and domestic automation - Google Patents

Abstract

FIELD: devices for household automation; devices for fire and security alarms.

SUBSTANCE: method of initiating the process of testing the detector comprises of action of a source of radiation on the radiation sensor, whereby the role of the radiation sensor is carried out by a sensor element which is located on the sensor, which is irradiated with a beam of an optical signal, and as a sensor element a regular light-emitting diode is used, which is meant for mode annunciation of the detector, thus the principle of convertibility work of the light-emitting diode is used. The optical spectrum chosen is from a visible ranger for convenience in guiding a narrow beam on the target, which is the light-diode indicator of the detector. The device contains the source and the radiation sensor. As a source of radiation, a laser diode of a visible light spectrum of radiation is used with additional optical components for collimation of radiation and creation of a narrow beam and an impulse generator and a battery and as the radiation sensor - the regular light emitting diode of a radiation detector.

EFFECT: simplification of the process of testing the detector for the user.

2 cl, 1 dwg

Description

The claimed technical solution relates to devices for fire alarm and home automation. Purpose and scope of the claimed technical solution: remote contactless start of processes for various fire alarm devices and home automation.

As an application of this technical solution, we can consider an example of starting the testing process during installation or during routine maintenance of smoke optoelectronic detectors IP212-71 Astra-421, designed to detect fire in closed rooms installed at a height of up to 10 meters. Most of these detectors, for example, fire smoke IP212-41M, IP212-50M, use contact methods to activate the testing process: for example, pressing or holding a special button of the “test” type on the detector body or holding the magnet to the outside of the detector (source of fame - Passport 4371 -005-12215496-00 substation to the fire detector smoke optical-electronic IP212-41M).

These methods are convenient when the detector is located, for example, on a table and access to it is unlimited. However, smoke detectors suggest their use, as a rule, on the ceiling at a height of up to 10 meters, therefore, these methods are not convenient in real conditions of use of detectors at objects when access to it is not convenient or limited and additional bulky auxiliary devices such as a stepladder, long pole and etc.

A non-contact method and device is proposed for starting processes in fire alarm and home automation devices, and in particular for starting the testing process in a smoke detector installed at the facility, to verify its operability during installation or during routine maintenance.

Known remote control (PROTOTYPE) according to the patent of Russia №2167490, publ. 05/05/20. A remote control made of two separate autonomous parts is fully functional and ergonomic, each part comprising a housing in which an interface, a battery, function buttons and a radiation source are located, the number of function buttons of one part and the other being different, and part of the function buttons of one The part is duplicated by the functional buttons of the other part, characterized in that the fully functional part contains a receiver that is able to receive commands from the ergonomic part . Remote control - the prototype can be made in the embodiment when the ergonomic part is located on the phalanx of the finger.

Common signs of the prototype and the claimed technical solution is the presence of a battery, functional buttons and a radiation source.

Differences from the prototype are that in the claimed technical solution there is only one autonomous part, using the radiation of a laser diode in the visible spectrum.

A feature of the claimed technical solution are:

use as a receiving element (photodetector) in devices of security and fire alarms and home automation, and in particular in the detector of standard components, in particular LED indicators used in the detector circuit for other functional purposes, that is, with such a combination of functions, the device becomes cheaper, since the detector cost for this function does not increase;

the use of a visible beam of optical radiation (to provide visual aiming at the receiving element in the detector) collimated into a narrow beam (to create more power, and therefore to ensure range) with a command encoded in a certain format.

The purpose of the proposed technical solution is to maximize the simplification for the user (installer, maintenance technician, owner) of the procedure for checking detectors installed on objects, without direct contact with the detector itself and without the use of massive devices.

The goal during the development of the method is achieved in that the method of starting the detector testing process includes the action of a radiation source on the radiation receiver, the radiation receiver acting as a detector element, which is irradiated with a narrow optical signal, in particular a low-power laser beam with an encoded command from the source radiation, made in the form of a special tester such as a laser pointer, while the testing process is started, and as The standard element of the detector is used to indicate the detector's operating modes. The principle of reversibility of the LED’s operation, both for transmission and reception, is used, while the LED’s reversibility depends on the type of semiconductor used for its manufacture, and the LED and the laser diode should be the same or very close, within the range of λр ± 10nm, where λр is the radiation length of the LED indicator, the wavelength, which is associated with the principle of reversibility, namely, for how long e waves are emitted by the standard detector LED, the maximum output signal will be at the same wavelength when this indicator is irradiated, while the optical spectrum of the tester is selected in the visible range for the convenience of aiming a narrow beam at the target, which is the standard detector LED, and the beam should be narrow in order to have sufficient power to illuminate the LED indicator. For this goal - the more you can create a bunch, the better. In a narrow beam, more energy is concentrated, and therefore, at the same emitter power (for example, 5 mW optical output power of a laser diode), a different range can be obtained depending on how well the radiation is focused. In our case (optical output power of a laser of 5 mW, a Plexiglass lens with a diameter of 5 mm and a focal length of 6 mm), it was possible to create a beam with a scattering spot at a distance of 10 meters of no more than 7 mm (serial sample).

The detector has a standard LED indicator acting as a photodetector, and a decision circuit.

The remote device for starting the detector testing process includes a transmitter, where a laser diode of the visible radiation spectrum with additional optical components for collimating radiation is used as a radiation source, i.e. creating a narrower beam, as well as a pulse generator and battery.

The advantages of the proposed technical solution are as follows.

The testing process is started remotely from a convenient position by a small-sized device (tester). In this case, the detector circuit practically does not rise in price, since a standard LED indicator is used as a radiation detector, which is essential for a class of products such as detectors, where the cost of a specialized photodetector (for example, a photodiode) and its installation on a printed circuit board can be up to 15 ... 20 % of the cost of all detector components.

The essence of the claimed technical solution of the device is illustrated in the drawing, which shows a block diagram of the proposed remote device to start the testing process of the detector, where

I block a radiation source containing:

1) battery;

2) power button;

3) generator;

4) a radiating diode;

5) lens;

II detector unit, comprising:

6) a regular LED indicator;

7) processing unit, management, decision making.

The remote device for starting the detector operating modes includes: a battery 1, a pulse generator 3, a power button 2, a laser diode of the visible radiation spectrum 4 and a lens 5. The detector unit consists of an LED 6, which also acts as a photodiode, as well as processing, management, decision making unit 7.

A device for starting processes in devices for fire alarm and home automation works as follows:

When you press the button 2, the generator 3 generates a serial code message to the laser diode of the visible radiation spectrum 4, and lens 5 creates a collimated beam (visible range λp = 650 ± 10 nm for ease of aiming). When the LED indicator 6 is irradiated with collimated radiation from the laser diode 4, a signal appears at the output of the LED indicator 6, which arrives at the processing, control, decision-making block 7. Having accepted the code package, block 7 starts this or that process (in our case, the testing process).

EXAMPLE OF A SPECIFIC IMPLEMENTATION OF THE METHOD for starting processes in fire alarm and home automation devices: In the specific case, the PIC12F629 microcontroller is used as a pulse generator 3, KP-1608 is used as LED indicator 6, which also acts as a photodiode, and as a processing unit , control, decision-making 7 apply the PIC16F676 microcontroller. The testing process is started by block 7 after irradiation with a laser diode of the visible radiation spectrum 4 of type LD-505 collimated beam with a wavelength of 650 nm.

Novelty: 1) Use of the visible radiation spectrum in the radiation source of the laser diode; 2) A narrow angle of radiation from the process start device; 3) A standard detector LED is used as a radiation receiver.

A similar combination of cost reduction and simplification while expanding the scope in the prior art has not been found, and in the prototype has not been achieved, which allows us to conclude that the claimed technical solution meets the criteria of "novelty", "inventive step" and "industrial applicability".

Claims (2)

1. A method for the non-contact start of processes, for example, a testing process, in fire alarm and household automation devices, including the action of a radiation source on a radiation receiver, characterized in that the radiation element is a sensitive element located in the fire and security alarm device and household automatics equipped with a decision circuit that is irradiated with a narrowly directed optical signal, in particular, a low-power laser beam with an encoded command from the source exercises performed in the form of a special tester, such as a laser pointer, the test process is started, and the standard LED indicator of the fire and security alarm device and home automation is used as a sensitive element to indicate the operating modes of the fire and alarm alarm device and home automation, in this case, the principle of reversibility of the LED operation is used both for transmission and reception, while the reversibility of the LED depends on the type of semiconductor used o for its manufacture, and the LED and the laser diode must have the same or very close, within λp ± 10nm, where λр is the radiation length of the LED indicator, wavelengths, which is associated with the principle of reversibility, namely, at what wavelength the LED emits indicator of the fire alarm system and home automation, at the same wavelength there will be a maximum output signal when this indicator is irradiated, while the optical spectrum of the tester is selected in the visible range for the convenience of aiming a narrow beam for the purpose, which is a standard LED indicator of a fire alarm system and home automation, and the beam should be narrow in order to have sufficient power to irradiate the LED indicator, since more energy is concentrated in a narrow beam, and, therefore, with the same the power of the emitter, you can get a different range depending on how well the radiation is focused. 2. A device for the non-contact start of testing processes in fire alarm systems and home automation devices, including a battery, a pulse generator, a radiation source and a radiation receiver, characterized in that the laser diode has a visible radiation spectrum with additional optical components for collimating radiation and creating a narrower beam, the pulse generator generates an encoded combination of signals that simulate the radiation of the source radiation, and as a radiation receiver, a standard LED indicator of the fire alarm and household automation devices is used.