RU199202U1 - VEHICLE STANDARD SPEAKERS SWITCHING DEVICE - Google Patents

Abstract

The utility model relates to the field of radio engineering and can be used in warning and communication systems integrated into vehicles. When delivering workers by official vehicles to the place of work and back, according to traffic rules, all passengers must wear seat belts. In order to reduce the risk to the health of workers, the driver must remind him of the need to fasten his seat belts before driving. In the standard systems "car radio-loudspeakers" there is no notification function (reminder). The task of the utility model is to improve the safe conditions for life and health of people during their transportation by road. The task is solved, and the technical result is achieved by developing a device that allows the use of a voice announcement module (for example, a well-known module on the ISD1820 microcircuit) with pre-recorded text (for example, "Dear passengers, please fasten your seat belts") together with the standard loudspeakers in the cabin Vehicle.

Description

The utility model relates to the field of radio engineering and can be used in warning and communication systems integrated into vehicles.

When transporting workers by vehicles to the place of work and back, according to traffic rules, all passengers must be wearing seat belts. In order to reduce the risk to the health of workers, the driver must remind him of the need to fasten his seat belts before driving. In standard car radio-loudspeaker systems, there is no notification function (reminder).

Known factory-made switches that allow you to switch audio signals from different sources [1], [2]. The disadvantage of these units is that they are stationary devices, have large dimensions, power supply from a 220 V network and are not intended for installation in vehicles.

Known factory-made switch that allows you to switch audio signals from different sources [3]. The disadvantage of this unit is its low functionality due to the fact that it is designed to switch only one audio signal circuit.

The task of the utility model is to improve safe conditions for life and health of people during their transportation by road.

The technical result is to ensure the operation of the voice annunciator together with standard loudspeakers in the passenger compartment of vehicles.

The task is being solved, and the technical result is achieved by developing a device that allows the use of a voice announcement module (for example, a well-known module on the ISD1820 microcircuit) with pre-recorded text (for example, "Dear passengers, please fasten your seat belts") together with standard loudspeakers in the passenger compartment funds.

The electrical schematic diagram of the device is shown in Fig. 1. The switching device of standard vehicle loudspeakers is mounted in the case 41. In the factory configuration of the vehicle, the car radio 19 is connected to the loudspeakers 46 through eight-pin pads 42 and 45. The switching device is connected using similar pads 43 and 44 "in the gap" of the pads 42 and 45. In the initial state, in module 20, all four channels from the car radio are connected to the loudspeakers. Music is playing. Before starting the movement, the driver presses the button 1, which connects power from the on-board network 4 to modules 5, 38 and 40. In module 5, at the moment of switching on, the capacitor 13 is discharged and the transistors 17 and 18 are open. This is a transient state in which the electromagnetic relays 21 and 31 are on, contacts 23 and 24 are open. Capacitor 13 begins to charge through the divider on resistors 14 and 15. When the voltage across the capacitor reaches a threshold value, transistors 17 and 18 will close, relays 21 and 31 will turn off. Through the normally closed contacts 23 and 24, LED 3 will turn on, signaling that the device is ready. Further, the driver briefly presses the button 2, which turns on the electromagnetic relay 6. Through the normally closed contacts 7 and 8, the capacitor 13 is discharged, the transistors 17 and 18 open, the electromagnetic relays 21 and 31 are turned on. In this case, pairs of contacts 23 and 24, 26 and 27, 29 and 30, 33 and 34, 36 and 37 open, and pairs of contacts 22 and 23, 25 and 26, 28 and 29, 32 and 34, 35 and 36 are closed.

Through contacts 10 and 11 of the electromagnetic relay 6, playback of an audio recording in module 39 is started. Module 38 is used to convert the voltage of the on-board network 12V into a voltage of 5 V required for the operation of module 39.

The audio signal from module 39 is amplified by module 40 and is reproduced by standard loudspeakers 46 through normally closed pairs of contacts 25 and 26, 28 and 29, 32 and 34, 35 and 36.

The parameters of elements 13-15 are calculated in such a way that after ten seconds the capacitor 13 will be charged, the transistors 17 and 18 will close, the relays 21 and 31 will turn off. Module 20 will return to its original state. The standard loudspeakers will be connected to the car radio.

Contacts 9, 12 of relay 6 and contact 22 of relay 21 are not used in the operation of the circuit. Resistor 16 is a load in the collector circuit of transistor 17.

After playing a reminder to fasten the seat belts, the passengers fasten. The driver starts driving. Music is playing. After an intermediate stop and new passengers boarding, the driver switches on the "Fasten seat belts" voice alarm controlled by the switching device again and continues driving.

List of sources:

1. Switches of sound signals [Electronic resource]. URL: http://les.ru/catalog/kommutatory-zvukovykh-signalov/ (date of access: 02.09.2019).

2. Switches of sound signals [Electronic resource]. URL: https://www.atanor.ru/audio/audioswitcher/ (date of access: 02.09.2019).

3. Load switching device UKN1 [Electronic resource]. URL: http://sktb-relay.ru/katflog/rele-staticheskie-tverdotelnye-ustrojstva-kommutatsii-nagruzki/ustrojstvo-kommutatsii-nagruzki-ukn1-vedetsya-razrabotka-detail (date of access: 02.09.2019).

Claims (1)

A switching device for standard vehicle loudspeakers, characterized by the fact that it consists of a switching relay module (20), which contains electromagnetic relays (21) and (31), through the contacts of which in the initial position the car radio (19) is connected to the standard loudspeakers (46), the audio amplifier module (40), the output of which is connected by the contacts of the electromagnetic relays (21) and (31) to the standard loudspeakers (46) for the time required to reproduce the text of the voice notification, the "12V / 5V converter" module (38), which is used to power the voice announcement module (39), which reproduces the pre-recorded text of the required content and duration, the time relay module (5), which controls the switching relay module (20) and the voice announcement module (39) via the "start" button (2).

Images