RU2266570C1 - Pedestrian traffic lights system - Google Patents

Abstract

FIELD: engineering of local alarm and notification informational systems for pedestrians.

SUBSTANCE: device has body with immovably held protective lens glass on it and inner light sources in form of light diode matrices mounted on circuit boards and provided with electronic control circuit. Body has two sections. In upper section, light diode matrix for red signal is positioned, assembled from light diodes with red light color, forming additional shape of standing person, and matrix, made with light diodes of different color, forming segmented indicator of reversed time count. In lower section, matrix of greed signal light diodes is positioned, made with possible forming of at least two overlapping shapes of moving person with fixed movement phases. Electronic control system has elements for automatic adjustment to signals, received from road traffic lights controller, elements for automatic adjustment of brightness of light diodes in accordance to time of day, elements for synchronizing reversed time count indicator in upper section with speed of alternation of movement phases of moving person shape in lower section, elements for sound accompaniment of change of phases of movement of moving person shape in lower section, elements for time synchronization between reversed time counter in upper section with frequency of sound accompaniment of alternation of phases of movement of moving person shape in lower section and elements for automatic adjustment of volume of sound accompaniment of alternation of phases of movement of moving person shape in lower section in accordance to time of day.

EFFECT: simplified construction, higher information capacity of pedestrian traffic lights system.

7 cl, 4 dwg

Description

The invention relates to local warning and warning information systems for pedestrians.

Known dynamic pedestrian traffic lights, consisting of two screens located one below the other. When pedestrians are allowed to move, one of the screens lights up in green, which simulates the movement of two pedestrian figures. At the time of prohibition of the movement of pedestrians, the indicated screen goes blank and another lights up - in red, which depicts the stationary figures of pedestrians. At the same time that the signal light, allowing pedestrian movement in a given direction, lights up, a moving pedestrian figure is displayed on the screen, and the effect of a treadmill underneath is created. At the same time, at the moment of simulating the movement (with the image of the pedestrian and track figures), the car’s outline on the screen is absent or motionless, and if it is forbidden to move in a given direction and the simulation of the pedestrian is stopped by gradually increasing the contour of the car, the impression of moving it past the conditional figure is created on the screen pedestrian with simulated collision [1]. The well-known dynamic pedestrian traffic light is too bulky and does not have sufficient visibility with a minimum of time for the perception of information communicated to the pedestrian by the traffic light.

The closest to the invention in technical essence and the achieved result is a traffic light [2], comprising a housing with a protective glass lens fixed to it and a light source placed inside the housing with a given glow color, made in the form of a matrix of LEDs combined in parallel connected elements on a printed circuit board, and a power source, as well as a matching device with a railway automation system.

With all the advantages of the prototype, proposed for use as a railway traffic light, it is too cumbersome and insufficiently informative when using the fundamental solutions incorporated in it for the pedestrian traffic light option.

The purpose of the invention is to simplify the design and increase the information content of the components of the pedestrian traffic light.

This goal is achieved by the fact that in a traffic light consisting of a typical two-section housing with a protective glass lens attached to it and an internal light source in the form of a matrix of LEDs of a given color (specified colors) on a printed circuit board with an electronic control circuit, the matrix of LEDs of the upper section of the red signal assembled from red LEDs glowing, forming the figure of a "standing person", and LEDs other than red glows forming a segment indicator of the countdown, and the matrix and the bottom LED green signal section forms at least two overlapping figures "walking person" with fixed phase of motion, and the electronic control circuit includes:

a) elements of automatic tuning to signals coming from the traffic light controller;

b) elements of sound accompaniment of change of phases of movement of a “walking person” (in the lower section);

c) elements for matching the indicator countdown time (in the upper section) with the rate of change of phases of movement of the “walking person” and the frequency of sound accompaniment (in the lower section);

d) elements of automatic adjustment of the brightness and volume of the soundtrack of the functioning sections of the traffic light (depending on the time of day).

The invention is illustrated by drawings.

Figure 1 presents a General view of the traffic light, figure 2 is a view of the informative part of the traffic light with a prohibitory signal, figure 3 is a view of the informative part of the traffic light with a enable signal (at 34 and 33 seconds of the countdown indicator, respectively), figure 4 - block diagram of a traffic light.

The traffic light (see Fig. 1) contains a typical two-section housing 1 with protective glass lenses 2 mounted on it and an internal light source in the form of a matrix of LEDs 3 and 4 of a given color (specified colors) on a printed circuit board with an electronic control circuit. The matrix of LEDs 3 (the upper section of the traffic light) in the proposed embodiment of the device is assembled from red LEDs glowing, forming the figure of a "standing person", and LEDs other than red glowing, forming a segment indicator of the countdown. The matrix of LEDs 4 (the lower section of the traffic light) in the proposed embodiment of the device is assembled from green LEDs that form at least two superimposed figures of a “walking person” with fixed phases of movement. The electronic control circuit of the proposed pedestrian traffic light includes:

a) elements of automatic tuning of a pedestrian traffic light according to signals coming from the traffic light controller;

b) elements of sound accompaniment of change of phases of movement of a “walking person” (along the lower section of a traffic light);

c) elements for matching the countdown time (in the upper section of the traffic light) with the rate of change of phases of movement of the “walking person” and the frequency of sound accompaniment (in the lower section of the traffic light);

d) elements of automatic adjustment (depending on the time of day) of the brightness of the glow and the volume of the soundtrack of the functioning sections of the traffic light.

The traffic light in the proposed embodiment of the device operates as follows.

By a prohibiting (for pedestrian) signal going to the pedestrian traffic light from the traffic light controller, a red figure of a “standing person” lights up in the upper section of the traffic light; while the lower section of the traffic light remains not turned on (see figure 2).

According to the permission signal (for pedestrians), the signal going to the pedestrian traffic light from the traffic light controller, the time (in seconds) remaining in the pedestrian for crossing the carriageway is sequentially displayed in the upper section of the traffic light (with LEDs other than red); at the same time, on the lower section of the traffic light, green figures of a “walking person” are displayed in different phases of movement (see figure 3).

The change of motion phases of the “walking person” (in the lower section of the traffic light) continues until a zero indication appears in the upper section of the traffic light, after which the prohibiting signal is turned on to the pedestrian and the informative part of the proposed traffic light takes on the form of a pedestrian in FIG. 2. In the future, the cyclogram of the traffic light is repeated in the sequence described above.

The LEDs of the proposed pedestrian traffic light (see Fig. 4) are connected in chains of several LEDs in each (LED blocks 8, 9) and connected to controlled sources of stable current (6, 7), which perform the function of determining faulty chains.

The elements of automatic tuning to signals from the traffic light controller are: block 2 (input circuit), with which the presence of input signals is determined; block 3 (microprocessor), which, working according to a special program, monitors the intervals of occurrence of signals from the traffic light controller. In the event of a change in the operating mode of the traffic light controller, the microprocessor 3, measuring the changed intervals of the arrival of signals from the traffic light controller, changes the operating mode of the traffic light (in particular, the number of seconds displayed on the upper section of the traffic light).

In this case, the sound accompaniment element is a sound siren 4 and part of the microprocessor 3 program. Sound accompaniment of the change of phases of movement of a figure of a walking person is carried out as follows: when the phase of movement of a figure of a widely walking person is displayed on the lower section of the traffic light, a constant sound signal is issued; when the phase of movement of the figure "human legs are aligned" is displayed on the lower section of the traffic light, the sound signal is not emitted. The supply of an audio signal by an audio siren 4 is carried out by a control signal from a microprocessor 3.

At the same time, the element for matching the indicator’s countdown time (in the upper section) with the phase change speed of the “walking person” and the sound frequency (in the lower section) is the traffic light algorithm, which is implemented as a program programmed in microprocessor 3. After the start of the reverse countdown on the upper section of the traffic light displays the number of remaining seconds; moreover, the value of the displayed number decreases by one with an interval of one second until the value of the displayed number reaches zero. In parallel with the countdown (on the upper section of the traffic light) on the lower section, the displayed phases of the movement of the human figure alternate, accompanied by a sound signal. Alternation of the phase display occurs with a variable speed: from the minimum (at the beginning of the countdown) to the maximum (at the end of the countdown). The essence of the coordination is that the countdown is counted at a constant interval, and the change in the display of the phases of the figure of a person occurs with constant acceleration.

At the same time, the elements for automatically adjusting the brightness of the glow and the volume of the sound are: light sensor 5, stable current sources 6, 7, and part of the microprocessor 3 program.

Automatic adjustment is as follows: the light sensor 5 gives a signal to the microprocessor 3 about the level of illumination on the street; microprocessor 3, working according to a special program, changes the operating mode of stable current sources 6, 7 in such a way that the light intensity from the LEDs changes; in addition, depending on the level of illumination on the street, the microprocessor 3 changes the volume of the sound by turning on or off the sound emitter. For example, at nightfall, the light sensor 5 gives a signal to the microcontroller 3, which gives a signal to stable current sources 6, 7, which as a result reduce the light intensity of the LEDs, and also mutes the sound.

Thus, the proposed device with a relative simplification of the design allows to increase the information content of the components of the pedestrian traffic light, which, in turn, will increase the accident-freeness at intersections equipped with such traffic lights.

Sources of information

1. Auth. testimonial. USSR No. 407380, class G 08 G 1/09, 1973.

2. Utility model No. 27313, class. B 61 L 5/18, 20002.

Claims (7)

1. A pedestrian traffic light, comprising a housing with a protective glass lens fixed on it and internal light sources in the form of LED arrays mounted on printed circuit boards and equipped with an electronic control circuit, one of which is made with LEDs other than red, forming a segment countdown indicator time, characterized in that the casing is made with two sections, in the upper of which is a matrix of red signal LEDs, assembled from red LEDs Forming a figure "standing man" and said matrix indicator inverse time count, and the bottom section - matrix green light LEDs, adapted to form at least two overlapping figures "walking person" with a fixed phase of motion. 2. The pedestrian traffic light according to claim 1, characterized in that the electronic control circuit includes automatic tuning elements for signals coming from the traffic light controller. 3. The pedestrian traffic light according to claim 1, characterized in that the electronic control circuit includes elements for automatically adjusting the brightness of the LEDs depending on the time of day. 4. The pedestrian traffic light according to claim 1, characterized in that the electronic control circuit includes elements for matching the countdown time of the indicator in the upper section with the rate of change of phases of movement of the “walking person” in the lower section. 5. The pedestrian traffic light according to claim 1, characterized in that the electronic control circuit includes sound elements for changing the phases of movement of the “walking man” figure in the lower section. 6. The pedestrian traffic light according to claim 5, characterized in that the electronic control circuit includes elements for matching the countdown time of the indicator in the upper section with the frequency of sound accompaniment of the change of phases of movement of the “walking man” figure in the lower section. 7. The pedestrian traffic light according to claim 5 or 6, characterized in that the electronic control circuit includes elements for automatically adjusting the volume of the soundtrack for changing the phases of movement of the “walking man” figure in the lower section depending on the time of day.

Images