JP6919094B2 - Guide light - Google Patents

Description

The present invention relates to an exit light that is installed on a road or the like and can blink to guide the flow of a vehicle or the like.

Conventionally, there are many guide lights as commercial products for guiding vehicles and the like at construction sites and the like. Among them, there are guide lights in which a plurality of guide lights blink repeatedly at the same time, or relay lights so that light flows in order to indicate the traveling direction of a vehicle or the like. These guide lights need to have a plurality of lighting fixtures blinking in synchronization, and it is necessary to provide a mechanism for that purpose.

In Patent Document 1, a plurality of construction lights receive standard radio waves at regular intervals to calibrate the time of the clock inside the construction lights, and control blinking based on the time of this clock, so that there is no deviation. Construction lights that can blink synchronously are disclosed.

In Patent Document 2, a control device is operated based on time information (time information represented by a 1-second pulse signal or hhmmss.ss) that can be acquired from GPS (Global Positioning System), and guidance is provided based on the control of this control device. A line-of-sight guidance marker system capable of lighting a marker is disclosed. The document further discloses that it is possible to turn on a relay that guides the line of sight, and a method thereof. That is, by providing a guide mark that lights up at the timing (reference time) when the 1-second pulse signal rises and a guide mark that lights up at a timing shifted by a predetermined time from that timing, it is possible to light the light so that it flows. Is. The above-mentioned predetermined time includes one in which one second, which is the interval of the pulse signal, is divided by an integer value, and one in which the number of seconds in the time information (hhmmss.ss) is divided by an integer value to obtain a numerical value divisible by an integer value. Has been done. For example, when there are three guide markers, the predetermined time is set to 1/3 second, and when the 1-second pulse signal rises (reference time), 1/3 second later, and 2/3 second later, each guide marker is used. Turn on. If the predetermined time exceeds 1 second, the guide marker is lit at a time divisible by 3 seconds (for example, 3rd second, 6th second, 9th second, ...) With the predetermined time as 3 seconds. And so on.

JP-A-2017-40907 Japanese Patent Application Laid-Open No. 10-153975

However, when the reference time that comes every second is synchronized with the pulse signal (calibration cycle) of 1 second as described above, the light flow is not disturbed, but the lighting cycle and the timing of time calibration are different. The flow of light may appear to be disturbed. For example, when the number of guide lights is 3, the lighting cycle is 0.6 seconds, and the calibration cycle is 60 seconds, the first guide light is turned on at exactly 60 seconds and the time is calibrated. , The flow of light does not appear to be disturbed at the moment of time calibration. However, when the lighting cycle is set to 0.7 seconds, the lighting cycle of the first guide light is not set at the 60th second, so the lighting cycle is reset along with the time calibration and the first guide light is turned on. When the light is turned on, the flow of light is disturbed. In order to avoid such a situation, by synchronizing the lighting cycle with the calibration cycle so that the lighting cycle arrives at the same time as the calibration cycle arrives, the relay lighting continues to be lit without disturbing the light flow. Is a problem.

In response to the above problems, in the present invention, the time can be calibrated by radio waves such as standard radio waves, and since the lighting cycle is a divisor of the calibration cycle, the lighting cycle is reset at the same time as the calibration cycle arrives, causing disturbance. Provide guidance lights that can be turned on without relays.

Specifically, it is a guide light for guiding a car by arranging a plurality of lamps, and a time calibration unit that calibrates the time in a calibration cycle by radio waves and a timing at which the lamp blinks according to the time based on the time are defined. An guide light having a timing information holding unit that holds timing information, a control unit for controlling blinking of a lamp based on the timing information, and a lamp that blinks according to the control of the control unit, and has a calibration cycle. When any one of the lamps blinks due to the arrival of G and the calibration cycle G, and the blinking cycle until the next blinking is T in units of 100 milliseconds, the blinking cycle T is the calibration cycle G. Provided is a guide light characterized by being about a number.

Further, in addition to the above features, when the lighting fixture installation interval is L, the guide speed is V, and the number of sets, which is the number of guide lights constituting one set of guide blinking with a plurality of lined guide lights, is n, 60. Provided is a set of guide lights in which L, T, and n are defined so that the relationship of ≦ {L / (T / n)} × 36000 ÷ 1000 ≦ 100 is established.

Further, in addition to the above features, a set of guide lights that arranges a set of guide lights in which L, T, and n are defined so that the relationship of 60 ≦ {L / (T / n)} × 36000 ÷ 1000 ≦ 100 is established. Provides an installation method for.

In the guide light of the present invention, the relay can be turned on without disturbance by receiving radio waves and calibrating the time. Further, since the lighting cycle is a divisor of the calibration cycle, the lighting cycle is synchronized with the calibration cycle, and the relay lighting without turbulence of the flow at the timing of time calibration is possible.

The figure which shows the lighting operation of the guide light according to this invention The figure which shows the functional structure of the guide light when Example 1 was carried out. Timing chart for showing processing when the lighting timing of the guide light according to the first embodiment is deviated. A flowchart showing an example of an outline of the processing flow in the first embodiment. The figure which shows the hardware configuration of the guide light which concerns on Example 1. The figure which showed an example of the value of V when T and n of the guide light concerning Example 2 were changed.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention should not be limited to the examples, and may be implemented in various embodiments without departing from the gist thereof. The first embodiment mainly describes the first aspect, and the second embodiment mainly describes the second and third claims.

<Overview>
The guide light according to this embodiment can calibrate the time by radio waves, and can control blinking based on the time counting based on the calibrated time and the timing information that determines the timing at which the guide light itself blinks. FIG. 1 is a diagram showing an outline of the operation of the guide light according to this embodiment. As shown in this figure, a plurality of guide light fixtures are installed side by side. In FIG. 1, the six guide lights are divided into two groups (0101) (0102) of three each. Each of these guide lights lights up when a predetermined lighting timing arrives. The lighting timing is based on the time calibrated by standard radio waves. Time calibration is performed when the calibration cycle arrives. Here, the calibration cycle arrives at time T1, each guide light receives a radio wave, and the times of all guide lights are synchronized as T1 according to the received time information. At time T1, the lamp 1 is lit based on the timing information that it is the lighting timing of the lamp 1. Next, at the time T1 + δ, which is δ seconds after T1, the lamp 2 is lit based on the timing information that it is the lighting timing of the lamp 2. Further, at the time T1 + 2δ δ seconds later, the lamp 3 is lit based on the timing information that it is the lighting timing of the lamp 3. At the next time T2 = T1 + 3δ, the lamp 1 is lit again because it is the lighting timing of the lamp 1. That is, the lighting timing is set for each guide light so as to be delayed by 0 seconds, δ seconds, and 2δ seconds from the reference times T1, T2, ... Within each group. In this way, the multiple guide lights lined up are lit, and the light seems to flow.

Each guide light holds the time T1, T2, ... Brought in the lighting cycle T and the lighting time difference 0, δ, 2δ, ... In the group as timing information, and lights are performed based on this. On the other hand, since T is a divisor of G, the lighting cycle indicated by any one of T1, T2, ... Always arrives at the time when the calibration cycle G arrives. As a result, since the lighting timing of the lamp 1 is always set at the calibration timing, the light flow does not appear to be disturbed even if the lighting is reset by the time calibration. By the way, if T is not a divisor of G, the lighting timing of the lamp 1 is not reached at the calibration timing. Then, when the calibration timing arrives, the reset is executed and the lamp 1 is turned on from the beginning, so that the flow of light is disturbed.

In the following, the functions of the guide lights and the contents of the hardware of this embodiment, and the flow of processing will be described in detail.

<Functional configuration>
FIG. 2 is a diagram showing a functional configuration of the guide light according to this embodiment. The guide lights (0200) according to this embodiment include a "time calibration unit" (0201), a "timing information holding unit" (0202), a "control unit" (0203), a "lamp" (0204), and the like. Has.

The "time calibration unit" (0201) has a function of calibrating the time in a calibration cycle by radio waves. "Radio wave" refers to one that includes time information. Specifically, it corresponds to standard radio waves (in Japan, those transmitted by the National Institute of Information and Communications Technology by long waves) and information transmitted by GPS satellites. In standard radio waves, 1-bit timing information transmitted every second and 1-bit information transmitted every second are convoluted and time information (year, month, day) that can be acquired every 60 seconds. , Day of the week, hour, minute) etc. are included in this. GPS includes information on acquisition time (hours, minutes, seconds) and the like. In addition to these, the information received by transmitting the time information of the NTP server or the like by the transmitter is also included. The “calibration cycle (indicated by G)” is a cycle for calibrating the time, and is a cycle for acquiring the above “radio wave” and correcting the time information held in the “control unit” (0203) described later. Is. The time calibration is performed by processing such as generating an interrupt to the control unit (0203) when the calibration cycle arrives after receiving the radio wave. The functions of the headquarters are realized by a wireless communication module, a timer module, a CPU, a RAM, a calibration cycle G held in the RAM, and a time calibration program held in the RAM and executed by the CPU. ..

The "timing information holding unit" (0202) has a function of holding timing information for which the timing of blinking itself is determined according to the time counting based on the time. As shown above, the "timing information" includes reference times T1, T2, ... Brought by the lighting cycle T, and delay times 0, δ, 2δ, ... From the lighting cycle. Here, when there are three guide lights belonging to one group, the delay times are 0, T / 3, and 2T / 3, respectively. δ may be set as 0, δ, 2δ, or may be set as −δ, 0, + δ with the reference time in the middle. These delay times are set by a switch or the like provided on the guide light. Here, the lighting cycle T needs to be a divisor of the calibration cycle G. For example, when the calibration cycle G is 60 seconds, the lighting cycle may be set to 0.6 seconds or the like. Then, the lighting cycle arrives at each calibration cycle, and the reference timing (that is, the arrival of T) can be shared among the plurality of guide lights every 60 seconds. Assuming that the lighting cycle is 0.7 seconds, the lighting cycle comes 59.5 seconds immediately before the calibration cycle arrives, and the light comes on 0.5 seconds later, and the calibration cycle comes and resets. Since the lighting is executed by, the light does not seem to flow but seems to stay. The functions of the headquarters are U / I (User Interface) such as a switch provided in the guide light, CPU, RAM, lighting cycle T held on the RAM, and reference times T1 and T2 obtained by T. ... and the delay time is 0, δ, 2δ, ..., And so on.

As described above, the timing information determines the lighting timing, but may also determine the lighting timing. For example, the lighting time may be held as a value m so that the control unit can read it.

FIG. 3 is a timing chart for explaining a phenomenon caused by a shift in lighting timing due to a timing error of the internal clock during the calibration cycle. As shown in FIG. 3A, the guide light is turned on for a lighting time of m seconds when the lighting cycle Tn is reached. Here, it is assumed that the lighting is executed Δt seconds earlier as shown in FIG. 3B due to the deviation of the internal clock. When the calibration cycle G comes during the lighting time, the timer of the guide light is reset and the lighting is executed from the beginning of the lighting cycle. At this time, the timer of the guide light is reset while the light remains on, and the light is turned on for Δt + m seconds. Here, as shown in FIG. 3C, Δt is the maximum lighting time of m seconds. In this way, the guide lights of the present embodiment are lit by performing a reset operation while being lit when the calibration cycle G arrives during the lighting when the lighting is executed earlier than the original lighting timing due to the lighting timing being deviated. It is possible to execute lighting from the beginning of the cycle. As a result, even if the lighting timing is deviated, it is possible to minimize the influence on the appearance of the light flow.

By the way, as the maximum value msec of Δt becomes larger, the deviation of the lighting timing can be tolerated, so that the calibration cycle G can be taken longer. By making the calibration cycle G longer, the number of calibrations can be reduced, and the power consumption generated in the calibration process can be reduced, which can contribute to the extension of the operating time of the guide light. It is also possible to optimize the permissible amount of deviation in lighting timing depending on the accuracy of the internal clock. That is, in the case of an internal clock having a smaller timing error, the permissible amount m can be small because the error that occurs before the arrival of the calibration cycle G is small. On the contrary, in the case of an internal clock having a large timing error, it is possible to reduce the occurrence of turbulence in the flow of light during time calibration by increasing the allowable amount m.

The "control unit" (0203) has a function for controlling blinking of the lamp based on the timing information. The reference times T1, T2, ... Held in the timing information holding unit (0202) are read, and the lights are turned on (turned off) at the timing when they should be turned on (turned off). The timing of lighting is calibrated by the time calibration unit (0201). Specifically, the timer counts to control the lighting of the lamp in the cycle T. When the calibration cycle G arrives, a signal such as an interrupt is received from the time calibration unit (0201), and a process of resetting the timer is executed. Then, from the reset, the lamps are turned on after the delay time (0, δ, 2δ, ...) Set in each guide lamp and indicated by δ above has elapsed. The functions of this unit are realized by a timer, a CPU, a RAM, and a control program stored in the RAM and executed by the CPU.

The "lamp" (0204) has a function of blinking according to the control of the control unit (0203). Specifically, it receives an ON signal or an OFF signal from the control unit (0203) and turns it on or off. The lamp has a solar cell, and the rechargeable battery may be charged by sunlight. In the light emitting part, it is desirable to use an LED from the viewpoint of power saving. The function of the lamp is basically realized by an LED, a battery as a power source, and the like.

<Processing flow>

FIG. 4 is a flowchart showing a processing flow when the guide light according to this embodiment is used. In the processing of the guide light of the present invention, it is first determined whether or not the calibration cycle has arrived (step S0401). When the calibration cycle is reached, the time is calibrated (step S0402). At the calibrated time, it is determined whether or not the lighting timing is set (step S0403). If it is the lighting timing, blinking is executed according to the control (step S0404). Finally, it is determined whether or not it is completed (step S0405), and if it is not completed, the process returns to the determination of success or failure of the arrival of the calibration cycle (step S0401), which is the first process.

<Hardware configuration>
FIG. 5 is a diagram showing a hardware configuration of the guide light according to this embodiment. Hereinafter, it will be described with reference to this figure. As shown in this figure, the guide light according to this embodiment includes a "CPU (central processing unit)" (0501), a "ROM" (0502), and a "RAM" (0503) that perform various arithmetic processes. ing. In addition, a "wireless communication module" (0504) for communicating with other guide lights and a "U / I (user interface)" (0505) such as buttons and switches for switching lighting modes (δ, 2δ, ...). ), A "timer module" (0506) that performs timekeeping, and a "lamp" (0508) are connected via an "I / O port" (0507). Then, they are connected to each other by a data communication path such as a "system bus" (0509) to transmit / receive and process information.

The "RAM" (0503) provides a work area which is also a work area of the program at the same time as reading the program to be executed by the "CPU" (0501) in order to execute the program. Further, a plurality of addresses are assigned to each of the "RAM" (0503), and the program executed by the "CPU" (0501) exchanges data with each other by specifying and accessing the addresses. , It is possible to perform processing.

Here, the "timer module" (0506) may be a timer mounted by software, but it is desirable to use an RTC module or the like equipped with a crystal oscillator or the like on the substrate to enable more accurate time measurement.

First, it was stored in the ROM (0502). The time calibration program is expanded on the RAM (0503) and executed by the CPU (0501). At this time, the program reads the value of the calibration cycle G held in the RAM (0503). The program acquires the time from the timer module (0506) and waits for the arrival of the calibration cycle G. When the calibration cycle approaches, the radio communication module (0504) receives radio waves, acquires time information, and executes the time calibration process. The time calibration process is executed by a method such as resetting the counter of the timer module (0506) by generating an interrupt when the arrival time of the calibration cycle is reached based on the received time information.

1. 1. 2. It was stored in the ROM (0502) at the same time as the time calibration program was executed. The control program is also expanded on the RAM (0503) and executed by the CPU (0501). The program reads the values of T1, T2, ..., δ, 2δ, ... Stored in the RAM (0503), and blinks the lamp (0508) in the cycle T based on the time of the timer module (0506). .. The lighting order in the group is set by the U / I (0505) of the DIP switch or the like. For example, when three guide lights are turned on in a group, the lighting order of each can be set to 0, δ, and 2δ for the delay time from the reference time, T1, T2, .... Regarding this information as well, 2. Read by the control program. Specifically, the timer module counts the cycle T, and when the reference times T1, T2, ... 0508) is turned on. When the calibration cycle G arrives here, 1. When an interrupt from the time calibration program occurs, the timer module counter is reset and the blinking operation starts from the beginning of the lighting order. Since T is a divisor of G in the guide light of this embodiment, the reference times T1, T2, ... Always arrive at the timing when the calibration cycle G arrives, and the blinking operation starts from the beginning of the lighting order. The flow of lighting light is not disturbed.

<Overview>
The guide lights of the present embodiment are based on the guide lights of the first embodiment, and by changing the lighting fixture installation interval (L) and the number of guide lights belonging to one group (n) when the relay is turned on. The velocity V of the light flow can be controlled.

The induction speed V when a plurality of the guide lights arranged as shown in FIG. 1 are relay-lit is related to the above-mentioned δ (= T / n) and the lamp installation interval L, which is the installation interval of the guide lights. This is because even if the light changes at the same time, the flow of light may appear faster or slower depending on the interval at which the guide lights are installed. Here, the speed at which the light flows V [Km / h] is obtained by dividing the lamp installation interval L [m] by the time (δ = T / n) [100 milliseconds] during which the light changes. That is,

V [Km / h] = L [m] / (T / n [100msec]) x 36000 ÷ 1000

Relationship is established.

Although it is in the range of the value of V, any value may be taken according to the traffic flow of the installation location, but if V is extremely fast or too slow with respect to the traffic flow, the light does not appear to flow. Such a problem arises. When considering the use on a highway, it is desirable to set L, T, and n so as to fall within the range of 60 ≦ V ≦ 100 to obtain a desirable effect. FIG. 6 is a diagram showing an example of the value of V when T and n are changed when the distance between the lamps is 4 m (L = 4). As shown in this figure, when n is 3 and T is 600 ms, V becomes 72 km / h, for example, to suppress the speed for a vehicle traveling at about 80 km / h. It has the effect of inducing. Similarly, when L is 4 and n is 4, and T is 600 ms, V becomes 96 km / h, which has the effect of promoting an increase in speed for a vehicle traveling at about 80 km / h. It is possible to prevent the slowdown that occurs and causes congestion. The distance (L) of 4 m between the lamps is the width of the single-tube barricade where guide lights are often installed at construction sites and the like.

0200 Guide light 0201 Time calibration unit 0202 Timing information holding unit 0203 Control unit 0204 Lighting equipment

Claims (3)

It is a guide light for guiding a car by arranging multiple cars.
A time calibration unit that calibrates the time in a calibration cycle using radio waves,
A timing information holding unit that holds timing information that defines the timing at which it blinks according to the time based on the time.
A control unit for controlling the blinking of the lamp based on the timing information,
A lamp that blinks according to the control of the control unit,
It is a guide light with
Calibration cycle is G
With the arrival of the calibration cycle G, one of the lamps blinks, and the blinking cycle until the next blinking is T in units of 100 milliseconds.
When
A guide light characterized in that the blinking cycle T is a divisor of the calibration cycle G. Set the lamp installation interval to L
Induction speed V
The number of sets, which is the number of guide lights that make up one set of guide blinking with a plurality of guide lights arranged side by side, is n.
When

60 ≦ {L / (T / n)} × 36000 ÷ 1000 ≦ 100

The set of guide lights according to claim 1, wherein L, T, and n are defined so that the relationship of



60 ≦ {L / (T / n)} × 36000 ÷ 1000 ≦ 100

A method of installing a set of guide lights for arranging the set of guide lights according to claim 1, wherein L, T, and n are defined so that the relationship of

Images