ES2402965B1 - Wireless decentralized traffic light controller controlled by satellite atomic clocks via GPS. - Google Patents

Abstract

Wireless decentralized traffic light regulator controlled by satellite atomic clocks via GPS. # The aforementioned invention aims at a decentralized controller for the traffic light installation of pedestrian crossings, traffic lights and even regulated intersections, where an installation without civil works and electrical wiring between the different traffic light elements of an intersection or crossing. # Each regulator has a GPS receiver (4), to receive the time base of the atomic clocks of the satellites, which through an appropriate software resident in The microcontroller (3) will turn on the lights of the traffic lights (10). # All GPS have the same time base (thanks to the atomic clocks of the satellites), in this way they will coordinate and synchronize perfectly between different regulators or they do at the same time between them without physical communication. # Each regulator must be powered by batteries, sun panels ares or any type of alternative energy.

Description

  DECONTRALIZED SEMAPHORIC REGULATOR WITHOUT CABLES CONTROLLED BY THE SATELLITE ATOMIC WATCHES BY GPS.

Technology Sector The present invention relates to the technological sector, specifically in the traffic signal regulation of urban and interurban traffic and refers to a decentralized regulator for wireless traffic lights controlled by the atomic clocks of satellites; It is the type of

that they would not need pipelines from the regulator to the intersection traffic lights, since each traffic light mast has a regulator and

GPS receiver for synchronization and coordination.

Previous Technology Electronic equipment that through software is widely known as local traffic light regulators

adequate allow you to control an intersection or group of intersections

traffic lights centralized in a single point or local regulator, from which all wiring to traffic lights groups distributed throughout an intersection or crossing regulated by physical wiring so

underground or even aerial.

This physical wiring that starts from the local regulator to the traffic light groups must be installed through a pipe, which previously

performs with a civil work, and that increases the costs of the aforementioned

installation must for this disassemble and mount part of the sidewalks and

roads at that intersection that you want to regulate.

When multiple intersections must be synchronized within an area

determined, to establish what is called the green wave, you must also

lay wiring and civil works for communications or do it through radio frequencies; so a work is done again between different regulated crossings to be able to tend the optical fiber of communications or

normal twisted pair cable.

At each junction or intersection, an electrical connection is made to give

service to the local regulator, which also needs work and physical wiring. The regulator is equipped with computer software and a

microprocessor that by means of a timer programmed by software

makes a distribution of time to said traffic lights or traffic phases in an orderly manner according to program and within an established cycle.

Due to the amount of abuses especially in the crosswalks,

considers it necessary more traffic light installations in them that

due to the large number of these they should be cheaper and their installation

that was not as complicated and expensive as conventional ones by

civil works electrical connections and underground laying.

Description of the Invention The regulator that the invention proposes, to have been conceived to avoid, the civil works (Channeling) through which these cables run to traffic light groups. This traffic light regulator

It is located in the traffic light group to be controlled and one for each group or groups of traffic lights that are on the same pole, mast or staff, of an intersection taking control of each regulator of an independent GPS (one per mast).

In this way, all wiring between traffic lights or different traffic light posts is avoided since each one carries its own power to batteries or solar panels and its own regulation, control and control equipment.

coordination.

Each controller collects the time base of a GPS receiver (4) through

of the NMEA frames that it transmits through its communications port

delivering them to the CPU (3); as the minute minute and second is

found synchronized in all GPS, a distribution of

10 times and compare it with the controller software, in this way

we can turn the lights on or off at will according to order

computer program dedicated to that intersection or crosswalk; the timer of the regulators is the same for all of them (the minutes and seconds of the GPS already synchronized); in this way a traffic light

20 can be understood with another, since it uses the same time base even if it is located in a different mast or even at another intersection or in the case of a work several kilometers by lane cutting by asphalting would have no problem coordinating a traffic light with the other.

25 The base of the regulator is based on a microcontroller (3), in which the computer program of the intersection to be regulated is housed; it also has a communications port in which the GPS receiver (4) is interconnected, and through which it receives the NMEA frame of the GPS; of this NMEA plot and specifically the $ GPGG takes advantage of the time base

30 to change the state of the regulator, being the same timer or time bases for all regulators of an intersection or several

intersections

The regulator has as many outputs, static to transistor (6) as outputs or colors that semaphore mast has, at the same time as it has several inputs (9) for forcing events as intentional / colors off, etc; It also has a port for programming from PC

5 (8) And its corresponding power supply (2). The regulator is equipped with push-buttons and LeO display (11) for changing the times of the circulation phases without having to use a PC.

10 The whole assembly is mounted on a single-sided printed circuit board and this at the same time on an insulating box that will be located in the

inside of the traffic light mast to be controlled.

For the provisional traffic lights of works without cables, (for cuts of 15 lanes, for example in asphalted roads) these may work

for unlimited time since the synchrony is by GPS and not like the oldest ones that worked by quartz watches losing time

synchronized and out of phase with the danger involved, and again having to

reprogram them; because with this method they synchronize alone with the base of

20 GPS times.

Description of the drawings To complement the description that is being made and in order to help with a better understanding, a single sheet is attached as an integral part of the description, corresponding to the block diagram of the wireless decentralized traffic light controller controlled by atomic clocks of the satellites using GPS and a small table with a $ GPGGA GPS frame on another sheet fig.2. Figure 1 shows the architecture of the regulator circuit.

1-Solar panel or battery for power supply. 2-Stabilized power supply for electronic voltage 5V and 12V DC.

3-Central process unit, microcontroller. Flash memories,

Eeprom Ram. 4-GPS receiver. (Receive the minutes and seconds of the clocks

Atomic satellites.) 5-GPS prescribe antenna. 6-Transistor outputs for lighting LED Lamps

12V traffic lights. 7-Output control (for fault detection in the same and

inform the CPU). 8-Communications port (Programming, PC communication etc) 9-Auxiliary inputs of orders to Regulator (key flashing

guard, off, on and programming buttons

phase times). 10O-Traffic lights or traffic light groups to be regulated in mast. 11-LCD (liquid crystal display for parameter display).

Figure 2 shows the message of an NMEA frame emitted by GPS regarding the $ GPGGA from which the HHMMSS.SS time base (Hours, minutes, seconds and tenths of a second) is collected.

Detailed presentation of an embodiment of the invention. The GPS decentralized traffic light regulator works with a DC power supply voltage of 12 to 24V, facilitated by batteries of accumulators that can be recharged through solar panels and located inside the mast;

the regulator has a connector, for this purpose that would connect

directly to the power supply. On the other hand, the traffic light groups are connected to the output module (6-7) directly, their output voltage being 12V in DC (direct current). It is provided with three push-buttons and an LCD display (11) to be able to program the traffic phase phases at the foot of the controller by

a traffic control technician, as long as you don't want to use a

personal computer in the communications port (8). On the same printed circuit board, the GPS receiver is attached, which is directly interconnected to it by an RX (data reception) port of the microcontroller; The GPS antenna will be installed on the top of the mast to capture the signals from satellites dedicated to global positioning.

These regulators. they would be supplied with an instruction manual and with

the appropriate software for the intersection or crosswalk that the customer demanded at the time of installation.

Industrial Application Its Industrial application would be the regulation of

road traffic specifically traffic light regulation in urban roads and

interurban, (crosswalks, regulated crossings, works regulation

provisional and events where a traffic light regulation is required without

electrical wiring and without civil installation works).

Claims (3)

1. WIRELESS DECENTRALIZED SEMAPHORIC REGULATOR CONTROLLED BY SATELLITE ATOMIC WATCHES BY GPS. Indicated to be adapted in a simple way to any traffic regulation application, by means of a basic programming carrying out the control by phases of circulation, characterized in that the time base and its synchronism depends on a GPS receiver (4) (Global positioning system) , in direct connection with the CPU (3), which comprises a power supply (2), a central process unit with microcontroller (3), a power stage (6), an output supervisor (7), two ports of inputs outputs (8-9), GPS, and a display for parameter display (11); all of them interconnected in it single-sided printed circuit, making a compact device which is housed in a box that is placed inside each mast or staff different than having an intersection, crosswalk or traffic lights of works or any other type of traffic light regulation. 2. WIRELESS DECENTRALIZED SEMAPHORIC REGULATOR CONTROLLED BY SATELLITE ATOMIC WATCHES BY GPS. Characterized according to claim 1, for which the GPS (4) collects the data, from the atomic clocks of the satellites, delivering them to the CPU (3) via an RX communications port for processing. 3-CABLE DECENTRALIZED SEMAPHORIC REGULATOR WITHOUT CABLES CONTROLLED BY THE SATELLITE ATOMIC WATCHES BY GPS, According to previous claims characterized in that of the NMEA frames emitted by the GPS (4), the CPU reads the $ GPGGA sentence fig.2 (the time minute and second), using them as a system timer and time base for the regulator. 4. WIRELESS DECENTRALIZED SEMAPHORIC REGULATOR CONTROLLED BY SATELLITE ATOMIC WATCHES BY GPS. Characterized according to previous claims, by Synchronize and coordinate with the other traffic lights in your satellite environment in the absence of physical wiring between different regulators in the same area or area.