JP5968183B2 - Railway light-emitting device control circuit - Google Patents

Description

  The present invention relates to a railway light emitting device control circuit.

  A railway traffic signal, a signal device, and a sign are devices that transmit a current indication (representing a signal or instruction) to a train operator by turning on or off a color lamp. Indications etc. are transmitted by the train operator by visually checking the lighting or extinction of the traffic lights, signals, or signs on the railroad signs. It is dangerous because the indications are not transmitted correctly. In addition, since the railway traffic signal, the signal device, and the sign are erected on the side of the track, there is a problem that the installation location is restricted.

  Even now, it is an information transmission method that is indispensable for the current train operation that the train operator visually confirms the current information by lighting or extinguishing the color lights of the traffic lights, cues, or signs. is there. For that reason, railway traffic lights, signal devices, and signs that convey the indications etc. to the train driver have their colors to ensure that the train driver can visually recognize the lighting or extinction of the color lamp from the viewing point. It must be erected so that the light emission direction is appropriate. Also, there must be no obstacles such as railroad traffic lights, signal devices, or trees that block light on the optical path connecting the sign and the viewing point. In addition, if the optical path is unavoidably blocked by some kind of obstacle, measures such as providing additional railway traffic signals, signal devices, or signs for relaying information such as indications are taken. .

  For this purpose, it is important to confirm that the traffic signal, signal device, and signs are properly approved. It is done manually by placing workers on each of them. The worker at the building site adjusts the approximate angle of the light emission direction by looking at the direction of the viewing point from the viewing permission / non-viewing confirmation hole attached to the traffic signal, signal device, or sign. After that, if the worker at the viewing point can visually check the lighting or extinction of the traffic light, signal device, or sign of the railway, it is confirmed that the approval of viewing permission of the traffic signal, signal device, or sign is acceptable. To do. If it is not visible, it can be said that the railroad traffic light, the signal device, or the sign is unapproved for visual recognition. Therefore, it is checked whether there is an obstacle on the optical path, and if there is any, it is removed. If there are no obstacles, contact the worker at the planting site with a mobile phone or radio, etc., and adjust the light emission direction of the railway traffic signal, signal device, or sign. The adjustment of the light emission direction is performed by a worker at the planting point performing fine adjustment while looking into the direction of the visual recognition point from the peephole or by visual confirmation from the visual confirmation viewpoint. The conventional confirmation of whether or not the visual approval of the railway traffic signal, the signal device, and the sign is accompanied by such a manual work and a visual confirmation work by the worker, there is a problem that work efficiency is poor.

  Therefore, conventionally, in order not to affect the train operator, in order to confirm the approval or disapproval of the railway traffic signal, signal device, or sign without actually lighting or extinguishing the traffic signal etc. Image processing of images taken by an infrared video camera using an infrared light emitter attached to a signal device or a sign and emitting infrared light of a bit pattern for confirmation and an infrared video camera photographing the infrared light emission at a viewing point There is a technique for determining the identity of a light emission pattern obtained in this way and a confirmation bit pattern (for example, Patent Document 1).

  Further, in the case of using the technique described in Patent Document 1 described above, the target railway traffic signal, signal device, or signal from among a plurality of adjacent traffic signal signals, signal devices, or signs and other noise components, There is a technology that enables confirmation of whether or not a sign is approved for viewing (for example, Patent Document 2).

Japanese Patent No. 4925987

JP 2010-173597 A

  In the conventional railway signal field, when controlling one type of color lamp traffic light, it is necessary to connect at least one pair of cables between the control device and the traffic light. There was no individual lighting control of the traffic lights. In other words, when controlling two or more types of traffic signals from one control device, it is necessary to connect to the control device using a pair of cables for each traffic signal. That is, in order to individually control lighting of a plurality of traffic lights, the number of cables used for connection is also required for the number of traffic lights.

  In the special signal light emitter, lighting control is performed by connecting a maximum of two light emitters in parallel with one pair of cables to one type of control device. However, the two light emitters emit light at the same timing, and a method for individually controlling lighting is not devised. In addition, the conventional special signal light emitter performs lighting control and disconnection detection using forward current and reverse current, but this method cannot use two or more types of information for lighting control. For this reason, even if a plurality of special signal light emitters are connected in parallel to one control device as shown in FIG. 1, all of the light emission patterns of these traffic lights are the same pattern and can be controlled individually. Can not. That is, when it is desired to transmit a plurality of information using a plurality of signals, it is necessary to connect to the control device by the number of information.

  Conventionally, as shown in FIG. 1, when two light emitting devices 2-1 and 2-2 connected in parallel are blinked using one control device 1, the switch is controlled by the switching control unit 11. At the same time that 12 is turned ON / OFF, all the light emitters 2 blink in the same pattern. In other words, in the conventional circuit configuration, the light emitter 2-1 and the light emitter 2-2 could not be blinked in individual patterns.

  That is, in the conventional control method, when two or more signal devices and special signal light emitters are connected to one control device, the same control pattern is obtained in all signal devices and special signal light emitters. Even when two or more signal devices and special signal light emitters are connected by a single control device, it is desired to control each signal device and special signal light emitter individually.

  By the way, the special signal light emitter can confirm the light emission state of the special signal light emitter from any distance within a predetermined first distance (for example, 800 m) referred to as a viewing distance from each level crossing. Must be installed in position. In addition, when each special signal light emitter is provided with a relay, the relay special signal light emitter for multiple railroad crossings may be used in common, but sharing is prohibited for special signal light emitters that are not relays. Therefore, a different special signal light emitter must be used for each level crossing.

  Therefore, when a plurality of level crossings are close to each other, special signal light emitters for indicating the state of each level crossing are also set close to each other. In particular, when there is a sharp curve, the number of special signal light emitters for indicating the state of each level crossing increases as shown in FIG. Note that in FIG. 2, the level crossing A, level crossing B, or level crossing C is a special signal light emitter for each level crossing. Shown in alphabet.

  In other words, even if there are a large number of special signal light emitters in succession using a special signal light emitter that has been installed, the visual approval of the special signal light emitter is automatically rejected without error. Even if a verification device is used by applying the above-described patent technology, the control device 1 and the light emitter 2 connected with the conventional circuit configuration as described with reference to FIG. Then, all of the special signal light emitters showing information on one level crossing have the same blinking pattern, and it is not possible to individually indicate the number of special signal light emitters corresponding to a certain level crossing. In order to avoid the fact that all of the special signal light emitters indicating information related to one level crossing have the same blinking pattern, a new cable is connected between the control device 1 and the light emitter 2 for each blinking pattern. There was a need to wire.

  For example, a cable wired to connect a control device and a special signal light emitter, a special signal light emitter and a special signal light emitter, and the like is used for a long time in a state exposed to the outdoors. Therefore, the cable for such applications must be very hard and durable so that it can be used for a long period of time even under adverse conditions such as being bitten by animals or exposed to rain and wind. There is. In addition, construction for connecting a control device and a special signal light emitter, a special signal light emitter and a special signal light emitter with a cable is difficult to automate, and has been carried out by humans. That is, increasing the number of cables wired leads to an increase in costs and labor costs.

  In addition, as shown in FIG. 2, when there are a large number of consecutive special signal light emitters, even during train operation, the driver can indicate which crossing information shows which level crossing information. It is very difficult to easily determine whether the signal light emitter has notified the occurrence of an abnormality.

  In addition, traffic lights, special signal light emitters, and the like are often installed in places where there is nothing around because of conditions such as looking around, so there is a relatively high possibility of lightning strikes. In view of this, it is desired that the light emitting system on the traffic light side can be constructed as inexpensively as possible.

  Even in the case where one traffic light has a plurality of light emitting units, the conventional circuit configuration described with reference to FIG. 1 uses one pair of cables for one switch for one light emitting unit. Was connected. For example, when there are five light emitting units in one traffic light, five pairs of cables are wired from the control box.

  That is, even when controlling each traffic light or special signal light emitting device individually, as in the conventional case, by connecting only one pair of cables, the problem of cost and construction time when laying the cable is reduced. There was a request to solve it.

  Therefore, the present invention solves the above problem, that is, information is selectively transmitted to a plurality of light emitting devices connected to each other by only one pair of cables by transmitting a signal having a plurality of information from one control device. It is an object of the present invention to provide a railway light emitting device control circuit capable of receiving and presenting the above.

  In order to solve the above-described problems, a first aspect of the railway light emitting device control circuit according to the present invention is that a control device generates a signal having a plurality of frequencies, and a switching unit for each of the signals having a plurality of frequencies. Switching control means for controlling a plurality of signals, and a plurality of frequency signals are transmitted to a railway light-emitting device through a pair of cables, and the railway light-emitting device emits only a light-emitting diode and a signal of a predetermined frequency to the light-emitting diode. And a filter for passing through.

  In another aspect of the railroad light emitter control circuit of the present invention, a plurality of railroad light emitters are connected in series to a single control device, and a light emitting diode and a filter constitute a parallel resonant circuit. doing.

  In another aspect of the railway light-emitting device control circuit of the present invention, a plurality of railway light-emitting devices are connected in series to one control device, and a light-emitting diode and a filter constitute a series resonance circuit. doing.

  In another aspect of the railroad light emitter control circuit according to the present invention, the generation unit generates a signal of a frequency for detecting disconnection, and the control device monitors the level of the signal of the frequency for detecting disconnection to detect the disconnection. Further provided is a disconnection detecting means for detecting.

  Another aspect of the railway light emitting device control circuit according to the present invention is that a plurality of rail light emitting devices are connected in parallel to one control device, and a light emitting diode and a filter constitute a parallel resonant circuit. doing.

  Another aspect of the railway light emitting device control circuit according to the present invention is that a plurality of rail light emitting devices are connected in parallel to one control device, and a light emitting diode and a filter constitute a series resonance circuit. doing.

  In another aspect of the railroad light emitter control circuit of the present invention, the control device further includes half-wave rectifying means for half-wave rectifying a signal having a predetermined frequency, and the switching control means is provided for each of the signals having a plurality of frequencies. In addition, switching is also controlled for the positive and negative signals half-wave rectified by the half-wave rectifier, and the light-emitting diode of the railway light-emitting device passes only a signal of a predetermined polarity. Are connected in such a polarity.

A second aspect of the railway light emitting device control circuit according to the present invention is such that the control device generates a signal with at least one type of frequency, and a half-wave rectification of the signal of a predetermined frequency generated by the generation unit. to the half-wave rectifying means, the half-wave rectifying means are half-wave rectified, and a switching control means for controlling each switching of positive polarity and negative polarity of the signal, positive and negative signals, one pair The railway light-emitting device includes a light-emitting diode, and the light-emitting diode is connected with a polarity that allows only a signal of a predetermined polarity to pass.

  In another aspect of the railroad light emitter control circuit of the present invention, a plurality of railroad light emitters are connected in series to a single control device, and a light emitting diode and a filter constitute a parallel resonant circuit. doing.

  In another aspect of the railway light-emitting device control circuit of the present invention, a plurality of railway light-emitting devices are connected in series to one control device, and a light-emitting diode and a filter constitute a series resonance circuit. doing.

  In another aspect of the railroad light emitter control circuit according to the present invention, the generation unit generates a signal of a frequency for detecting disconnection, and the control device monitors the level of the signal of the frequency for detecting disconnection to detect the disconnection. Further provided is a disconnection detecting means for detecting.

  Another aspect of the railway light emitting device control circuit according to the present invention is that a plurality of rail light emitting devices are connected in parallel to one control device, and a light emitting diode and a filter constitute a parallel resonant circuit. doing.

  Another aspect of the railway light emitting device control circuit according to the present invention is that a plurality of rail light emitting devices are connected in parallel to one control device, and a light emitting diode and a filter constitute a series resonance circuit. doing.

  According to the present invention, a signal indicating a plurality of information can be transmitted from a single control device using only one pair of cables, and information can be selectively received and presented by a plurality of light emitters. .

It is a figure for demonstrating the conventional circuit. It is a figure for demonstrating the special signal light-emitting device constructed when the some level crossing is provided in the curve point. It is a figure which shows the 1st circuit example. It is a figure which shows the 2nd circuit example. It is a figure which shows the 3rd circuit example. It is a figure which shows the 4th circuit example. It is a figure which shows the 5th circuit example. It is a figure which shows the 6th circuit example. It is a figure which shows the 7th circuit example. It is a figure which shows the 8th circuit example. It is a figure which shows the 9th circuit example. It is a figure which shows the 10th circuit example. It is a block diagram which shows the structure of a confirmation apparatus. It is a flowchart for demonstrating the signal inspection process of a confirmation apparatus. It is a figure which shows the example of a different structure of a control apparatus. 5 is a flowchart for explaining anomaly detection processing 1; 6 is a flowchart for explaining signal pattern detection processing 1; It is a figure which shows the example of a different structure of a control apparatus. 10 is a flowchart for explaining anomaly detection processing 2; 10 is a flowchart for explaining signal pattern detection processing 2;

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following, the light emitting device refers to a light emitting device constituting a special signal light emitting device, a light emitting device constituting a signal device, or the like.

  In order to solve the above-described problem, a plurality of high-frequency signals are transmitted to a pair of cables connecting the control device and the light emitter, or a signal having a specific polarity is transmitted, or each frequency is transmitted. A circuit capable of transmitting a signal of a specific polarity is proposed. The light-emitting device side extracts a signal having a specific frequency, a signal having a specific polarity, or a signal having a specific frequency and a specific polarity, and executes control according to the signal. With reference to FIGS. 3 to 13, circuit configurations of the control device and the light emitting device will be described.

  In the configuration example of the first group, one control device has a plurality of oscillation circuits (circuits that generate a signal of a specific frequency) and a function of controlling transmission of them, and performs switching control for each frequency. Different information is provided for each frequency, and these signals are mixed and transmitted to each of a plurality of light emitters using a pair of signal lines. A plurality of light emitters are equipped with a filter and a light emitting diode, and only a signal with a specific frequency flows through the filter, or a signal with a specific frequency does not flow. That is, since only a signal having a specific frequency selectively flows through the light emitting diode, each of the plurality of light emitters emits light based on information included in the signal having a predetermined frequency.

  FIG. 3 is a circuit diagram when a plurality of light emitters 32 are connected in series to the control device 31 and the light emitters 32 emit light by parallel resonance.

  The control device 31 includes a switching control unit 41, switches 42-1, 42-2, and 42-3 switched by the switching control unit 41, an oscillation unit 43-1 connected to the switch 42-1, and a switch 42-2. The oscillation unit 43-2 is connected, the oscillation unit 43-3 is connected to the switch 42-3, and the disconnection detection unit 44 is configured.

  The switching control unit 41 performs switching of the switches 42-1, 42-2, and 42-3. The switches 42-1, 42-2, and 42-3 are connected to the oscillators 43-1, 43-2, and 43-3 that generate signals having different frequencies, respectively. That is, the information indicated by the pattern given by the switching of the switch 42-1 is generated as a signal of the frequency generated by the oscillator 43-1, and the information indicated by the pattern given by the switching of the switch 42-2 is generated by the oscillator 43-2. As the signal of the frequency to be transmitted, the information indicated by the pattern given by the switching of the switch 42-3 is the signal of the frequency generated by the oscillating unit 43-3. Sent to each. Here, although the switches 42-1, 42-2, and 42-3 are illustrated using switch circuit symbols, for example, a switching control method using a digital circuit such as a switching circuit using a transistor. You may control using.

  The disconnection detection unit 44 has a function of monitoring the signal level of the cable at the frequency generated by the oscillation unit 43-3, and the signal level of the frequency generated by the oscillation unit 43-3 is below a certain value. In this case, it can be detected that a disconnection has occurred.

  The oscillators 43-1, 43-2, and 43-3 each generate signals having different frequencies. Here, the oscillator 43-1 generates a 10 kHz signal for information transmission, the oscillator 43-2 generates a 20 kHz signal, and the oscillator 43-3 generates a 50 kHz signal for disconnection detection. However, it goes without saying that signals having frequencies different from these three types of frequencies may be generated as long as the frequencies are different from each other.

  Here, the case where the control device 31 controls the two light emitters 32-1 and 32-2 is illustrated and described. However, in the control device 31, 3 is used for information transmission. Two or more oscillation units 43 are provided, and the switching control unit 41 controls three or more light emitters 32 by switching three or more switches 42 and transmitting information using signals of three or more types of frequencies. Needless to say, the device 31 may be connected to be controlled.

  The light emitter 32-1 includes a filter 51 that cuts off a signal having a frequency of 10 kHz, and a light emitting diode 52. For the filter 51, for example, a parallel resonance circuit including a coil and a capacitor is used. The filter 51, that is, the coil, the capacitor, and the light emitting diode 52 are connected in parallel to form a parallel resonance circuit. Since only the current of the frequency of 10 kHz flows through the light emitting diode 52 due to the function of the filter 51, the light emitting diode 52 of the light emitter 32-1 has a patterned signal having a frequency component of 10 kHz, that is, in the control device 31. A signal based on the pattern given by the switching of the switch 42-1 flows. Accordingly, the light emitting diode 52 of the light emitter 32-1 blinks in a pattern for transmitting information given by the switching of the switch 42-1.

  The light emitter 32-2 includes a filter 53 that cuts off a signal with a frequency of 20 kHz, and a light emitting diode 52. For the filter 53, for example, a parallel resonance circuit including a coil and a capacitor is used. The filter 53, that is, the coil, the capacitor, and the light emitting diode 52 are connected in parallel to form a parallel resonance circuit. Since only the current with a frequency of 20 kHz flows through the light-emitting diode 52 by the action of the filter 53, the light-emitting diode 52 of the light emitter 32-2 has a patterned signal having a frequency component of 20 kHz, that is, in the control device 31. A signal based on the pattern given by the switching of the switch 42-2 flows. Therefore, the light emitting diode 52 of the light emitter 32-2 blinks in a pattern for transmitting information given by the switching of the switch 42-2.

  In this way, a plurality of light emitting devices 32 connected in series with a pair of cables can be blinked in a pattern for transmitting different information from one control device 31.

  FIG. 4 is a circuit diagram in the case where a plurality of light emitting devices 61 are connected in series to the same control device 31 as described with reference to FIG. 3 and the light emitting devices 61 emit light by series resonance.

  The control device 31 uses the information indicated by the pattern given by the switching of the switch 42-1 as the signal of the frequency generated by the oscillating unit 43-1 and the information indicated by the pattern given by the switching of the switch 42-2 as the oscillating unit 43-1. As the signal of the frequency generated by the switch 42-3, the information indicated by the pattern generated by the switching of the switch 42-3 is used as the signal of the frequency generated by the oscillation unit 43-3 as the frequency signal generated by the switch 42-3. Send. Here, although the switches 42-1, 42-2, and 42-3 are illustrated using switch circuit symbols, for example, a switching control method using a digital circuit such as a switching circuit using a transistor. You may control using.

  The light emitter 61-1 has a filter 71 that passes only a frequency of 10 kHz, a light emitting diode 52, and a load 72 that passes a signal of a frequency other than 10 kHz. For the filter 71, for example, a series resonance circuit including a coil and a capacitor is used. The filter 71, that is, the coil, the capacitor, and the light emitting diode 52 are connected in series to form a series resonance circuit. Since only the current of the frequency of 10 kHz flows through the light emitting diode 52 due to the function of the filter 71, the light emitting diode 52 of the light emitter 32-1 has a patterned signal having a frequency component of 10 kHz, that is, in the control device 31. A signal based on a pattern given by switching of the switch 42-1 flows, and a current having a frequency other than 10 kHz flows through the load 72. Therefore, the light emitting diode 52 of the light emitter 61-1 blinks in a pattern for transmitting information given by the switching of the switch 42-1.

  The light emitter 61-2 includes a filter 73 that allows only a frequency of 20 kHz to pass, a light emitting diode 52, and a load 74. For the filter 73, for example, a series resonance circuit including a coil and a capacitor is used. The filter 73, that is, the coil, the capacitor, and the light emitting diode 52 are connected in series to form a series resonance circuit. Due to the function of the filter 73, a current having a frequency other than 20 kHz flows through the load 74, and only a current having a frequency of 20 kHz flows through the light emitting diode 52. Therefore, the light emitting diode 52 of the light emitter 61-2 has a frequency component of 20 kHz. , That is, a signal based on a pattern given by switching of the switch 42-2 in the control device 31, and a current having a frequency other than 20 kHz flows in the load 74. Therefore, the light emitting diode 52 of the light emitter 61-2 blinks in a pattern for transmitting information given by the switching of the switch 42-2.

  In this manner, a plurality of light emitting devices 61 connected in series with a pair of cables can be blinked in a pattern for transmitting different information from one control device 31.

  When the circuit configuration described with reference to FIGS. 3 and 4 is used, the number of light emitting devices that can be connected in series can be increased by increasing the types of oscillation frequencies, the number of switches, and the types of filters. is there. In addition, when the circuit configuration described with reference to FIGS. 3 and 4 is used, disconnection detection can be easily performed.

  FIG. 5 is a circuit diagram when a plurality of light emitting devices 32 similar to those described with reference to FIG. 3 are connected in parallel to the control device 81 and the light emitting devices 32 emit light by parallel resonance.

  The control device 81 is connected to the switching control unit 41, the switches 42-1 and 42-2 switched by the switching control unit 41, the oscillation unit 43-1 connected to the switch 42-1 and the switch 42-2. The oscillation unit 43-2.

  Here, the switching control unit 41 switches the switches 42-1 and 42-2. The switches 42-1 and 42-2 are connected to oscillating units 43-1 and 43-2 that generate signals having different frequencies, respectively. That is, the information indicated by the pattern given by the switching of the switch 42-1 is generated as a signal of the frequency generated by the oscillator 43-1, and the information indicated by the pattern given by the switching of the switch 42-2 is generated by the oscillator 43-2. Is transmitted from the control device 81 to each of the plurality of light emitters 32 connected in parallel. Here, although the switches 42-1, 42-2, and 42-3 are illustrated using switch circuit symbols, for example, a switching control method using a digital circuit such as a switching circuit using a transistor. You may control using.

  In the light emitter 32-1, only the current having a frequency of 10 kHz flows through the light emitting diode 52 by the function of the filter 51, as in the case described with reference to FIG. For this reason, the light-emitting diode 52 of the light emitter 32-1 flows a patterned signal having a frequency component of 10 kHz, that is, a signal based on the pattern given by the switching of the switch 42-1 in the control device 31, and the switch 42 It blinks in a pattern for transmitting information given by switching -1. Also in the light emitter 32-2, as in the case described with reference to FIG. 3, only a current having a frequency of 20 kHz flows through the light emitting diode 52 due to the function of the filter 53. For this reason, the light emitting diode 52 of the light emitter 32-2 receives a patterned signal having a frequency component of 20 kHz, that is, a signal based on the pattern given by the switching of the switch 42-2 in the control device 31, and the switch 42 -2 blinks in a pattern for transmitting information given by switching.

  In this way, a plurality of light emitting devices 32 connected in parallel with a pair of cables can be blinked in a pattern for transmitting different information from one control device 81.

  6, a plurality of light emitters 61 similar to those described with reference to FIG. 4 are connected in parallel to the same control device 81 as described with reference to FIG. 5, and the light emitters 61 emit light by series resonance. FIG.

  That is, the control device 81 uses information indicated by the pattern given by switching of the switch 42-2 as information on the pattern given by switching of the switch 42-1 as a frequency signal generated by the oscillation unit 43-1. It transmits to each of the some light-emitting device 61 connected in parallel as a signal of the frequency which the oscillation part 43-2 produces | generates. The light emitting diode 52 of the light emitter 61-1 configured by the series resonance circuit blinks in a pattern for transmitting information given by the switching of the switch 42-1, and the light emission configured by the series resonance circuit. The light emitting diode 52 of the machine 61-2 blinks in a pattern for transmitting information given by the switching of the switch 42-2. Here, although the switches 42-1, 42-2, and 42-3 are illustrated using switch circuit symbols, for example, a switching control method using a digital circuit such as a switching circuit using a transistor. You may control using.

  In this way, a plurality of light emitting devices 61 connected in parallel by a pair of cables can be blinked in a pattern for transmitting different information from one control device 81.

  In addition, when the circuit configuration described with reference to FIGS. 5 and 6 is used, disconnection detection similar to that illustrated in FIGS. 3 and 4 cannot be performed, but similarly to the case described with reference to FIGS. 3 and 4. By increasing the types of oscillation frequencies, the number of switches, and the types of filters, it is possible to increase the number of light emitters that can be connected in parallel. In addition, when the light emitter 32 or the light emitter 61 is connected in parallel, only the addition of a filter or a load and the change of the wiring inside the light emitter are performed with respect to the conventional circuit configuration as described with reference to FIG. Since the control system can be updated and there is no need to redraw a long cable connecting the control device 81 and the light emitter 32 or the light emitter 61, the cost and man-hour required for changing the circuit can be reduced.

  Next, in the configuration example of the second group, one control device rectifies the signal waveform to at least one oscillation circuit (a circuit that generates a signal of a specific frequency) and the + side and the − side, that is, half A circuit capable of wave rectification is provided, switching control is performed on currents in the respective directions, different information is given to each of the currents, and the data is transmitted to each of a plurality of light emitters using a pair of signal lines.

  In addition, when the light emitting devices are connected in series, the control device may have two or more oscillation circuits, and one of them may be used for disconnection detection. When the oscillation frequency is one type, the plurality of light emitters selectively emit light in a pattern based on the current in either direction depending on the polarity of the light emitting diode. In addition, when a plurality of oscillation frequencies are mixed in the signal from the control device, the light emitter is configured to allow only a signal having a specific frequency to flow through the light emitting diode by mounting a filter.

  FIG. 7 is a circuit diagram in the case where a plurality of light emitters 32-1 and 92 are connected in series to the control device 91, and each of the light emitters 32-1 and 92 emits light by parallel resonance.

  The control device 91 is connected to the switching control unit 41, the switches 42-1, 42-2, 42-3 switched by the switching control unit 41, the rectifier circuit 101 connected to the switch 42-1, and the switch 42-2. Rectifier circuit 102, rectifier circuit 101, oscillating unit 43-1 connected to rectifier circuit 102, oscillating unit 43-3 connected to switch 42-3, and disconnection detecting unit 44.

  The switching control unit 41 performs switching of the switches 42-1, 42-2, and 42-3. The switch 42-1 and the switch 42-2 are supplied with currents having different polarities by the half-wave rectifier circuit 101 and the half-wave rectifier circuit 102, respectively. -3 is connected to the oscillator 43-1 or 43-3 that generates signals of different frequencies. That is, the information shown by the pattern given by the switching of the switch 42-1 is the information shown by the pattern given by the switching of the switch 42-2 as the positive polarity signal of the frequency generated by the oscillating unit 43-1. Information indicated by the pattern given by the switching of the switch 42-3 as a negative polarity signal of the frequency generated by the unit 43-1 is serially transmitted from the control device 91 as a signal of the frequency generated by the oscillation unit 43-3. Are transmitted to each of the plurality of light emitters 32-1 and 92. Here, although the switches 42-1, 42-2, and 42-3 are illustrated using switch circuit symbols, for example, a switching control method using a digital circuit such as a switching circuit using a transistor. You may control using.

  The oscillating units 43-1 and 43-3 generate signals having different frequencies, respectively. Here, it is described that the oscillation unit 43-1 generates a 10 kHz signal for information transmission and the oscillation unit 43-3 generates a 50 kHz signal for disconnection detection. Needless to say, a signal having a frequency different from these two types of frequencies may be generated.

  Since the light emitter 32-1 is the same as the light emitter 32-1 described with reference to FIG. 3, detailed description thereof is omitted. The light emitting diode 52 of the light emitter 32-1 blinks according to the pattern given by the switching of the switch 42-1 because only the signal of 10 kHz frequency and positive polarity is passed by the polarity and the function of the filter 51. .

  The light emitter 92 includes a light emitting diode 111 that is connected so that the polarity of the filter 51 that cuts off a signal with a frequency of 10 kHz and the light emitting diode 52 of the light emitter 32-1 are reversed. For the filter 51, for example, a parallel resonance circuit including a coil and a capacitor is used. The filter 51, that is, the coil, the capacitor, and the light emitting diode 111 are connected in parallel to form a parallel resonance circuit. The light emitting diode 111 blinks according to the pattern given by the switching of the switch 42-2 because only a negative current with a frequency of 10 kHz flows depending on the polarity and the function of the filter 51.

  In this manner, a plurality of light emitters 32-1 and light emitters 92 connected in series with a pair of cables can be blinked in a pattern for transmitting different information from one controller 91. .

  In FIG. 8, a plurality of light emitters 61-1 and 121 are connected in series to the same controller 91 as described with reference to FIG. 7, and the light emitters 61-1 and 121 are caused to emit light by series resonance. It is a circuit diagram in the case.

  The light emitting device 61-1 is the same as the light emitting device 61-1 described with reference to FIG. The light-emitting diode 52 of the light-emitting device 61-1 blinks according to the pattern given by the switching of the switch 42-1, in order to pass only a signal of 10 kHz frequency and positive polarity by the polarity and the function of the filter 71. .

  The light emitter 121 includes a filter 71 that passes only a frequency of 10 kHz, a load 74, and a light emitting diode 111 that is connected so that the polarity is opposite to that of the light emitting diode 52 of the light emitter 61-1. For the filter 71, for example, a series resonance circuit including a coil and a capacitor is used. The filter 71, that is, the coil, the capacitor, and the light emitting diode 111 are connected in series to form a series resonance circuit. Only a 10 kHz frequency and negative current flows through the light emitting diode 111 due to the function and polarity of the filter 71, and therefore blinks according to the pattern given by the switching of the switch 42-2.

  In this way, a plurality of light emitters 61-1 and 121 connected in series with a pair of cables can be blinked in a pattern for transmitting different information from one control device 91. . Further, when the circuit configuration described with reference to FIGS. 7 and 8 is used, disconnection detection can be easily performed.

  FIG. 9 is a circuit diagram in the case where the control device 131 having a half-wave rectifier circuit connects a plurality of light emitters 132 and 133 in parallel and selects a signal according to the polarity of the light emitting diode to emit light.

  The control device 131 includes a switching control unit 41, switches 42-1 and 42-2 switched by the switching control unit 41, a rectifier circuit 101 connected to the switch 42-1, and a rectifier circuit 102 connected to the switch 42-2. And an oscillating unit 43-1 connected to the rectifier circuit 101 and the rectifier circuit 102.

  The switching control unit 41 performs switching of the switches 42-1 and 42-3. Currents having different polarities are passed through the switch 42-1 and the switch 42-2 by the half-wave rectifier circuit 101 and the half-wave rectifier circuit 102, respectively. That is, the information shown by the pattern given by the switching of the switch 42-1 is the information shown by the pattern given by the switching of the switch 42-2 as the positive polarity signal of the frequency generated by the oscillating unit 43-1. The negative signal having the frequency generated by the unit 43-1 is transmitted from the control device 131 to each of the plurality of light emitting devices 132 and 133 connected in series.

  The light emitter 132 includes a light emitting diode 52 that allows only positive current to pass through. The light-emitting diode 52 of the light-emitting device 132 blinks according to the pattern given by the switching of the switch 42-1 in order to pass only a positive signal depending on its polarity.

  The light emitter 133 includes a light emitting diode 111 that allows only a negative current to pass therethrough. The diode 111 of the light emitter 133 blinks according to the pattern given by the switching of the switch 42-2 in order to pass only a negative signal depending on its polarity.

  In this way, a plurality of light emitters 132 and light emitters 133 connected in parallel with one pair of cables can be blinked in a pattern for transmitting different information from one controller 131.

  FIG. 10 shows a case where a light emitting device 32-1 and a light emitting device 92 including a parallel resonance circuit are used in place of the light emitting device 132 and the light emitting device 133 in FIG. It is a circuit diagram in the case of connecting a plurality of light emitters 32-1 and 92 in parallel and causing each light emitter to emit light by parallel resonance.

  11 shows a case where the light emitters 61-1 and 121 including the series resonance circuit are used instead of the light emitter 132 and the light emitter 133 of FIG. 9, that is, the control device 131 having a half-wave rectifier circuit. FIG. 6 is a circuit diagram in the case where a plurality of light emitters 61-1 and 121 are connected in parallel and each light emitter emits light by series resonance.

  Further, when the circuit configuration described with reference to FIGS. 9 to 11 is used, the disconnection detection as described with reference to FIG. 7 or FIG. 8 cannot be performed, but the conventional configuration as described with reference to FIG. The system configuration can be updated simply by adding filters and loads and changing the wiring inside the light emitter, and it is necessary to redraw a long cable that connects the controller 131 and the plurality of light emitters. Therefore, the cost and man-hour required for changing the circuit can be reduced.

  As described above, in the circuits described with reference to FIGS. 7 to 11, the control device can transmit signals indicating two different types of information at one type of frequency, and the number of oscillation units 43 can be reduced. Can be reduced.

  Next, the configuration example of the third group has both the characteristics of the first group and the second group.

  FIG. 12 illustrates a control device 151 that performs half-wave rectification on each of a plurality of types of signals and transmits a signal pattern representing a plurality of types of information to a plurality of light emitters using a pair of cables. FIG. 15 is a circuit diagram when a light emitter connected in parallel to 151 emits light by parallel resonance.

  The control device 151 includes a switching control unit 41, switches 42-1, 42-2, 42-3, 42-4 switched by the switching control unit 41, a rectifier circuit 101-1 connected to the switch 42-1, and a switch. The rectifier circuit 102-1 connected to 42-2, the rectifier circuit 101-2 connected to the switch 42-3, the rectifier circuit 102-2 connected to the switch 42-4, the rectifier circuit 101-1 and the rectifier circuit 102 -1 and the oscillating unit 43-2 connected to the rectifying circuit 101-2 and the rectifying circuit 102-2.

  To the control device 151, light emitters 32-1 and 32-2 and light emitters 92-1 and 92-2 having parallel resonance circuits are connected in parallel.

  Only a positive current having a frequency of 10 kHz passes through the light emitting diode 52 of the light emitter 32-1. Therefore, the light emitting diode 52 of the light emitter 32-1 blinks according to the pattern given by the switching of the switch 42-1.

  Only a positive current having a frequency of 20 kHz passes through the light emitting diode 52 of the light emitter 32-2. Therefore, the light emitting diode 52 of the light emitter 32-2 blinks according to the pattern given by the switching of the switch 42-3.

  Only a negative current having a frequency of 10 kHz passes through the diode 111 of the light emitter 92-1. Therefore, the diode 111 of the light emitter 92-1 blinks according to the pattern given by the switching of the switch 42-2.

  Only a negative current having a frequency of 20 kHz passes through the diode 111 of the light emitter 92-2. Therefore, the diode 111 of the light emitter 92-1 blinks according to the pattern given by the switching of the switch 42-4.

  In this way, a plurality of light emitters 32-1, 32-2 connected in parallel by a pair of cables from one control device 151 that generates two types of frequencies and includes a half-wave rectifier circuit, and The light emitters 92-1 and 92-2 can be blinked in patterns for transmitting different information.

  Here, the case where the four light emitting devices 32-1, 32-2 and 92-1 and 92-2 blink in different patterns by half-wave rectifying signals of two oscillation frequencies, respectively. As described above, the number of connectable light emitters can be increased by increasing the types of oscillation frequencies.

  Further, here, a case has been described in which a plurality of light emitters having a parallel resonance circuit are connected in parallel to the control device 151, but in the same manner as described above, the control device 151 includes a plurality of light sources having a series resonance circuit. Needless to say, it is possible to connect the light emitters in series, connect a plurality of light emitters having a series resonant circuit in parallel, or connect a plurality of light emitters having a parallel resonant circuit in series.

  When the light emitters are connected in series, the control device 151 further includes one switch, and generates an oscillator that generates a signal having a frequency different from that of the oscillators 43-1 and 43-2 connected to the switch. The unit 43-3 and the disconnection detection unit 44 may be further provided.

  The circuits described with reference to FIGS. 3 to 12 are all different in that a plurality of light emitters are connected in series or in parallel using one pair of cables from one control device, and each light emitter represents different information. Enable blinking with a pattern. By using this circuit, even if there are a large number of consecutive special signal light emitters, it is possible to automatically check and confirm whether or not the special signal light emitters are approved for viewing without any error.

  In addition, by applying such a circuit, for example, when a traffic light has a plurality of light emitting units, a plurality of light emitting units can be respectively connected by simply wiring a pair of cables from a control box or the like to the traffic light. It becomes possible to control lighting individually. Therefore, it is possible to reduce the cost and man-hour required for installing the traffic light.

  Next, referring to FIG. 13 and FIG. 14, an error occurs even when there are a large number of special signal light emitters continuously using the various circuits described with reference to FIGS. 3 to 12. The configuration and processing of the confirmation device for automatically inspecting and confirming whether the traffic signal is approved or not will be described automatically.

  When checking and confirming whether or not a special signal light emitter is approved for viewing, any of the control devices described with reference to FIGS. 3 to 12 provided in each special signal light emitter has a plurality of connected special signals. The light emitting device is caused to blink in a pattern that can distinguish which number of special signal light emitting devices corresponds to which level crossing. For example, a check device described in the above-mentioned patent document (Japanese Patent No. 4925987 or Japanese Patent Application Laid-Open No. 2010-173597) is mounted on an inspection vehicle or a commercial train so that the field of view is equivalent to that of the driver. By automatically capturing images and analyzing them, even if there are a large number of consecutive special signal light emitters, it will automatically check and confirm whether the special signal light emitters are approved or not without error. It becomes possible.

  FIG. 13 is a block diagram illustrating a configuration of the confirmation apparatus 201.

  The confirmation device 201 includes a video camera 211, an A / D conversion unit 212, an image data storage unit 213, a control unit 214, an input unit 215, a setting unit 216, a program storage unit 217, a data storage unit 218, and a display unit 219. It is configured.

  The video camera 211 captures an image with predetermined sampling data (for example, 30 Hz) in a field of view equivalent to that of the driver, and supplies the image to the A / D converter 212.

  The A / D conversion unit 212 converts analog imaging data supplied from the video camera 211 into digital image data, and supplies the digital image data to the image data storage unit 213.

  The image data storage unit 213 stores the digital image data supplied from the A / D conversion unit 212.

  The control unit 214 performs arithmetic control according to the program to determine whether or not the processing of the image stored in the image data storage unit 213 and the blink pattern of each special signal light emitter have been correctly recognized as a result of the image processing. The process of each part of the confirmation apparatus 201 is controlled, such as performing the process etc. which judge, for example, memorize | stores the information input by the input part 215 in the data storage part 218.

  The input unit 215 receives input of various data necessary for processing such as a blinking pattern of each special signal light emitter.

  The setting unit 216 performs various settings for calculation control by the control unit 214.

  The program storage unit 217 stores an arithmetic control program executed by the control unit 214.

  The data storage unit 218 stores various data such as various information input from the input unit 215 and results obtained by the control unit executing the arithmetic control program.

  The display unit 219 includes, for example, a liquid crystal display panel, an LED (Light Emitting Diode) display panel, and the like. Based on the control of the control unit 214, for example, a determination result of visual approval / disapproval is given to a driver or a maintenance related employee. Predetermined information for notification is displayed.

  In FIG. 13, for example, it has been described that the display unit 219 is provided in order to notify the driver or the maintenance-related employee of the result of the visual approval / denial determination, but the confirmation device 201 includes, for example, the display unit 219. In addition to or in addition to the display unit 219, an audio output unit or the like is provided so that, for example, the determination result of visual approval / disapproval can be notified to a driver or a maintenance-related employee using the audio. good.

  Next, the signal inspection processing of the confirmation apparatus 201 will be described with reference to the flowchart of FIG.

  At this time, the switching control unit 41 of the control device switches the signal inspection pattern that can distinguish which crossing and which light-emitting device, respectively, so that the corresponding signal can emit light. 42 switching operations are controlled.

  Further, in the confirmation device 201, from the input unit 215, a signal inspection pattern that can distinguish which level crossing and which light emitter is in the inspection section, and the order in which they should be confirmed, Information indicating the section is input and stored in the data storage unit 218.

  In step S <b> 11, the control unit 214 reads the signal inspection pattern stored in the data storage unit 218.

  In step S12, the control unit 214 extracts a signal pattern to be acquired next from the signal inspection pattern read in step S11.

  In step S <b> 13, the A / D conversion unit 212 acquires an image captured with predetermined sampling data by the video camera 211, converts analog imaging data into digital image data, and supplies the digital image data to the image data storage unit 213. The image data storage unit 213 stores the digital image data supplied from the A / D conversion unit 212.

  In step S14, the control unit 214 performs digital image data stored in the image data storage unit 213, for example, by the processing described in the above-described patent document (Japanese Patent No. 4925987 or Japanese Patent Application Laid-Open No. 2010-173597). And a process of determining whether or not the pattern of the signal to be acquired next, which has been extracted in step S12, is correctly captured is executed.

  In step S15, the control unit 214 determines whether or not blinking that matches the corresponding signal pattern has been detected within a predetermined interval as a result of the determination processing in step S14.

  If it is determined in step S15 that blinking matching the corresponding signal pattern has been detected, in step S16, the control unit 214 can visually recognize which signal corresponding to which level crossing in the data storage unit 218. Record the detected log indicating.

  If it is determined in step S15 that blinking that matches the corresponding signal pattern could not be detected, in step S17, the control unit 214 controls the display unit 219 to determine which signal corresponding to any level crossing. An error notification indicating that the crossing could not be performed is performed, and an error detection log indicating which signal corresponding to which level crossing was not visually recognized is left in the data storage unit 218.

  In step S <b> 18, the control unit 214 determines whether or not the visual approval rejection confirmation using the signal inspection pattern has been completed.

  If it is determined in step S18 that all the visual authorization rejection checks have not been completed, the process returns to step S12, and the subsequent processes are repeated. In step S18, when it is determined that all the visual authorization rejection confirmations have been completed, the processing is terminated.

  By such processing, even when there are a large number of a plurality of traffic lights in succession, it becomes possible to automatically check and confirm whether or not the traffic signal is approved without error.

  In addition to the emergency stop signal, by applying the above-mentioned processing, it is possible to notify the driver who is operating the train to some degree of urgency, etc., or to the maintenance staff if necessary. Can be.

  Specifically, the level crossing warning sound volume is reduced not only in situations where an emergency stop is required, such as when a person or a car is left behind at the level crossing, Sensors capable of detecting minor faults such as faults, minor faults in electrical level crossing breakers, broken barges, and reduced light intensity of level crossing warning lights are provided. Aside from the emergency stop signal that is lit when a person or vehicle is left behind at the railroad crossing, where an emergency stop signal is normally generated on the side of the track, an abnormality detection notification light (or an abnormality detection notification light) A light emitting unit (hereinafter the same) is provided, and the control device provided at the railroad crossing controls the emergency stop signal and the abnormality detection notification light individually to light the emergency stop signal. It is possible to inform the driver and the maintenance-related employees of malfunctions that are low.

  The control device 231 that is an example of the control device used at this time will be described with reference to FIG.

  The control device 231 newly includes a sensor 241 in the control device 31 described with reference to FIG. The controller 231 is connected in series with the light emitters 32-1 and 32-2 described with reference to FIG. For example, the light emitter 32-1 can be an emergency stop signal, and the light emitter 32-2 can be an abnormality detection notification light. The sensor 241 is used not only in a state where an emergency stop is necessary, for example, when a person or a car is left in the railroad crossing, but also a sound volume level of the railroad crossing warning sound is reduced, a railroad crossing warning sound generator is faulty, It is possible to detect minor faults such as a minor breakage of the breaker, breakage of the breaking bar, and a decrease in the light intensity of the level crossing warning light. A plurality of sensors 241 may be used instead of one, or a sensor unit including a plurality of sensors may be used.

  The switching control unit 41 controls the lighting of the emergency stop signal based on the input from the sensor 241 by controlling the switching of the switch 42-1, and controls the lighting of the abnormality detection notification light. -2 by controlling the switching of -2.

  Here, the control device 231 has been described assuming that the sensor 241 is newly provided with respect to the control device 31 described with reference to FIG. 3, but any control described with reference to FIGS. Needless to say, a new sensor 241 may be provided for the apparatus.

  Here, the control device 231 is described as having the light emitters 32-1 and 32-2 connected in series. However, in the control device 231, three or more oscillation units 43 are used for information transmission. The switching control unit 41 switches three or more switches 42 and transmits information using three or more types of oscillation frequencies, thereby connecting and controlling three or more light emitters 32 to the control device 231. It goes without saying that you may let them. Furthermore, although it demonstrated here that the light-emitting devices 32-1 and 32-2 demonstrated using FIG. 3 were connected to the control apparatus 231 in series, it demonstrated using FIGS. 3-12. It goes without saying that a plurality of light emitting devices may be connected using a connection method other than the above.

  Next, the abnormality detection process 1 executed by the control device 231 will be described with reference to the flowchart of FIG.

  In step S <b> 41, the switching control unit 41 determines whether there is a notification of abnormality detection from the sensor 241. If it is determined in step S41 that there is no notification of abnormality detection from the sensor 241, the process in step S41 is repeated.

  If it is determined in step S41 that the sensor 241 has notified the abnormality detection, in step S42, the switching control unit 41 detects an abnormality that requires an emergency stop, such as when a person or a car is left behind in the crossing. It is determined whether or not is detected.

  If it is determined in step S42 that an abnormality that requires an emergency stop has not been detected, in step S43, for example, the switching control unit 41 decreases the volume of the crossing warning sound, or causes a one-system failure of the crossing warning sound generator. Then, it is determined whether or not an abnormality that does not require an emergency stop, such as a minor failure of the electric railroad crossing breaker, breakage of the barrier bar, or a decrease in the light intensity of the railroad crossing warning light, is detected. If it is determined in step S43 that no abnormality that does not require an emergency stop has been detected, the process returns to step S41, and the subsequent processes are repeated.

  If it is determined in step S43 that an abnormality that does not require an emergency stop is detected, in step S44, the switching control unit 41 controls the switching of the switch 42-2, so that the light emitter 32-2, ie, the abnormality is detected. The detection notification light is turned on, and the process returns to step S41.

  If it is determined in step S42 that an abnormality requiring an emergency stop has been detected, in step S45, the switching control unit 41 controls the switching of the switch 42-1, so that the light emitter 32-1, ie, the emergency The stop signal is turned on, and the process ends.

  By such processing, the driver traveling on the train can recognize that a minor abnormality has been detected in addition to the normal emergency stop signal by turning on the abnormality detection notification light. It is possible to perform safer driving such as passing the railroad crossing in which an abnormality is detected with sufficient caution at a reduced speed.

  The emergency stop signal and the abnormality detection notification light that are controlled to be turned on by the processing described with reference to FIG. 16 may be visually confirmed by the driver. The driver may be notified by automatically detecting the lighting of the signal and the abnormality detection notification light and displaying it.

  Next, the signal pattern detection process 1 executed by the confirmation apparatus 201 will be described with reference to the flowchart of FIG.

  At this time, as described with reference to FIG. 16, the switching control unit 41 of the control device 231 performs the lighting control of the emergency stop signal and the abnormality detection notification light based on the input from the sensor 241. 1 and switching of the switch 42-2 is controlled.

  In the confirmation device 201, the emergency stop signal and the position of the abnormality detection notification light are input in advance from the input unit 215 and stored in the data storage unit 218.

  In step S <b> 61, the A / D conversion unit 212 acquires an image captured with predetermined sampling data by the video camera 211, converts analog imaging data into digital image data, and supplies the digital image data to the image data storage unit 213. The image data storage unit 213 stores the digital image data supplied from the A / D conversion unit 212.

  In step S62, the control unit 214 performs digital image data stored in the image data storage unit 213 by, for example, the processing described in the above-described patent document (Japanese Patent No. 4925987 or Japanese Patent Application Laid-Open No. 2010-173597). And a determination process is performed to determine whether or not the emergency stop signal or the abnormality detection notification light is turned on in the captured image.

  In step S63, the control unit 214 determines whether or not an emergency stop signal has been detected as a result of the determination process in step S62.

  When it is determined in step S63 that an emergency stop signal has not been detected, in step S64, the control unit 214 determines whether or not lighting of the abnormality detection notification light has been detected as a result of the determination processing in step S62. To do. If it is determined in step S64 that lighting of the abnormality detection notification light has not been detected, the process returns to step S61, and the subsequent processes are repeated.

  If it is determined in step S64 that lighting of the abnormality detection notification light has been detected, in step S65, the control unit 214 controls the display unit 219 to detect that the abnormality detection notification light has been turned on. Perform output processing to notify the driver.

  In step S66, the control unit 214 leaves a detected log of lighting of the abnormality detection notification light in the data storage unit 218, the process returns to step S61, and the subsequent processes are repeated.

  If it is determined in step S63 that an emergency stop signal has been detected, in step S67, the control unit 214 controls the display unit 219 to perform a process for notifying the driver of an emergency stop, and the process ends. Is done.

  By such processing, it is possible to notify the driver by automatically detecting the emergency stop signal and the lighting of the abnormality detection notification light and displaying them.

  In addition to turning on the abnormality detection notification light, the abnormality detection notification light blinks in a predetermined pattern, and the confirmation device 201 detects what abnormality has occurred at which level crossing by the pattern. The process according to the degree of urgency may be executed.

  Referring to FIG. 18, a control device 251 is an example of a control device that blinks the abnormality detection notification light in a predetermined pattern and can indicate what abnormality has occurred at which level crossing by the pattern. Will be described.

  The control device 251 newly has a memory 261 that stores in advance a blinking pattern that can individually distinguish what kind of abnormality has occurred at which level crossing with respect to the control device 231 described with reference to FIG. Provided. The control device 251 is connected in series with the light emitters 32-1 and 32-2 described with reference to FIG. For example, the light emitter 32-1 can be an emergency stop signal, and the light emitter 32-2 can be an abnormality detection notification light.

  Based on the input from the sensor 241, the switching control unit 41 performs lighting control of the emergency stop signal by controlling switching of the switch 42-1, and performs flashing control of the abnormality detection notification light. This is performed by controlling the switching of the switch 42-2 based on the blinking pattern stored in.

  In addition, in the confirmation device 201, an input of a blinking pattern that can be individually distinguished from the input unit 215 as to what kind of abnormality has occurred at which level crossing is performed. , For example, the first importance with high importance that needs to be notified to the driver who is driving the running train, and what abnormality is relatively less important, so the driver is immediately Information indicating whether or not the second importance level is sufficient to record the abnormality detection without needing to be notified is stored in the data storage unit 218.

  Here, the control device 251 has been described assuming that the memory 261 is newly provided with respect to the control device 231 described with reference to FIG. 15, but any control described with reference to FIGS. It goes without saying that a sensor 241 and a memory 261 may be newly provided for the apparatus.

  Here, the control device 251 has been described as having the light emitters 32-1 and 32-2 connected in series. However, in the control device 251, three or more oscillation units 43 are used for information transmission. The switching control unit 41 switches three or more switches 42 and transmits information using three or more types of oscillation frequencies, thereby connecting and controlling three or more light emitters 32 to the control device 231. It goes without saying that you may let them. Furthermore, although it demonstrated here that the light-emitting devices 32-1 and 32-2 demonstrated using FIG. 3 were connected to the control apparatus 251 in series, it demonstrated using FIGS. 3-12. It goes without saying that a plurality of light emitting devices may be connected using a connection method other than the above.

  Next, the abnormality detection process 2 executed by the control device will be described with reference to the flowchart of FIG.

  In step S <b> 81, the switching control unit 41 determines whether there is a notification of abnormality detection from the sensor 241. If it is determined in step S81 that there is no notification of abnormality detection from the sensor 241, the process in step S81 is repeated.

  If it is determined in step S81 that the sensor 241 has notified the abnormality detection, in step S82, the switching control unit 41 detects an abnormality that requires an emergency stop, such as when a person or a car is left behind in the crossing. It is determined whether or not is detected.

  When it is determined in step S82 that an abnormality that requires an emergency stop has not been detected, in step S83, for example, the switching control unit 41 reduces the volume of the crossing warning sound, or one-system failure of the crossing warning sound generator. Then, it is determined whether or not an abnormality that does not require an emergency stop, such as a minor failure of the electric railroad crossing breaker, breakage of the barrier bar, or a decrease in the light intensity of the railroad crossing warning light, is detected. If it is determined in step S83 that no abnormality that does not require an emergency stop has been detected, the process returns to step S81 and the subsequent processes are repeated.

  If it is determined in step S83 that an abnormality that does not require an emergency stop is detected, the switching control unit 41 reads a flashing pattern corresponding to the abnormality detection content from the memory 261 in step S84.

  In step S85, the switching control unit 41 controls the switching of the switch 42-2 so that the light emitter 32-2, that is, the abnormality detection notification light blinks in a corresponding pattern, and the process returns to step S81. The subsequent processing is repeated.

  If it is determined in step S82 that an abnormality that requires an emergency stop has been detected, in step S86, the switching control unit 41 controls the switching of the switch 42-1, whereby the light emitter 32-1, ie, the emergency The stop signal is turned on, and the process ends.

  With such a process, not only the emergency stop signal is turned on, but also the abnormality detection notification light can be blinked in a predetermined pattern based on the content of the abnormality, so that the confirmation device 201 can provide more detailed abnormality. Information can be detected.

  Next, the signal pattern detection process 2 executed by the confirmation apparatus 201 will be described with reference to the flowchart of FIG.

  In step S <b> 101, the A / D conversion unit 212 acquires an image captured with predetermined sampling data by the video camera 211, converts analog imaging data into digital image data, and supplies the digital image data to the image data storage unit 213. The image data storage unit 213 stores the digital image data supplied from the A / D conversion unit 212.

  In step S102, the control unit 214 performs digital image data stored in the image data storage unit 213 by, for example, the processing described in the above-described patent document (Japanese Patent No. 4925987 or Japanese Patent Application Laid-Open No. 2010-173597). Then, a determination process is performed to determine whether the emergency stop signal is turned on or the abnormality detection notification light is flashing in the captured image.

  In step S103, the control unit 214 determines whether or not an emergency stop signal has been detected as a result of the determination process in step S102.

  If it is determined in step S103 that an emergency stop signal has not been detected, in step S104, the control unit 214 has detected flashing that matches the signal pattern corresponding to the failure notification as a result of the determination process in step S102. Judge whether or not. If it is determined in step S104 that blinking of the abnormality detection notification light has not been detected, the process returns to step S101, and the subsequent processes are repeated.

  If it is determined in step S104 that blinking of the abnormality detection notification light has been detected, in step S105, the control unit 214 determines the content of the detected failure based on the information stored in the data storage unit 218. Determine the importance.

  In step S106, the control unit 214 determines whether or not the importance of the content of the detected failure is a first importance that is an importance to be notified to the driver.

  In step S106, when it is determined that the detected importance of the content of the failure is the first importance, in step S107, the control unit 214, based on the information stored in the data storage unit 218, The display unit 219 is controlled to perform an output process for notifying the driver of what kind of failure has occurred at which level crossing.

  If it is determined in step S106 that the detected failure content is not the first importance, the failure content is the second importance. Therefore, when it is determined in step S106 that the importance of the detected failure content is not the first importance, or after the process of step S107 is completed, in step S108, the control unit 214 displays the data storage unit. In 218, a detected log indicating what kind of failure has occurred at which level crossing is left, the processing returns to step S101, and the subsequent processing is repeated.

  If it is determined in step S103 that an emergency stop signal has been detected, in step S109, the control unit 214 controls the display unit 219 to perform a process for notifying the driver of an emergency stop, and the process ends. Is done.

  By such processing, not only the detection of the emergency stop signal, but also the information indicated by the abnormality detection notification light blinking based on the content of the abnormality is automatically detected without error, and displayed and output. Since the driver can be notified, for example, the driver can perform a safe driving operation such as passing a railroad crossing in which a slight abnormality is detected with a reduced speed. In addition, since a slight abnormality detection log that does not require immediate notification to the driver can be left, maintenance and inspection can be quickly performed based on the accumulated log.

  Also, for example, when the detected content is traffic jam information that is a minor abnormality that does not require immediate notification to the driver, the log is accumulated, and the level crossing at which the traffic jam is detected and the time of the traffic are analyzed, for example, This can be reflected in the diamond revision, etc., to reduce traffic congestion.

  In this way, the number of control devices and cables can be reduced and the system can be simplified by making it possible to individually control two or more traffic lights and special signal light emitters with a single control device. It becomes.

  Conventionally, when a new light-emitting device is provided and lighting control at a timing different from that of the existing light-emitting device is desired, it is necessary to newly lay a cable. In general, the distance between the control device and the light emitter is often long, and cables laid outdoors are often expensive because they can withstand poor conditions. This leads to an increase in the cost and time required for maintenance and maintenance. On the other hand, by applying the above-described technique, two or more types of information can be transmitted from the control device to the light emitting device with only one pair of cables. Even when it is desired to control the light emission timing separately from the light emitting device, there is no need to newly lay a long and expensive cable.

  In addition, conventionally, a plurality of light emitters are connected in parallel to the control device, and each of the light emitters is individually controlled to be turned on using the above-described technology from a state where each light emitter is turned on at the same timing. When changing the system, it is only necessary to replace the light emitting device or replace the components and wiring inside the light emitting device without replacing the cable. For this reason, the problem concerning the cost and work period concerning a change of a system can be solved.

  Further, when the light emitter is connected in series to the control device, the disconnection of the cable can be easily detected.

  The series of processes described above can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program recording medium in a general-purpose personal computer or the like.

  The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 31 ... Control apparatus, 32 ... Light emission machine, 41 ... Switching control part, 43 ... Oscillation part, 44 ... Disconnection detection part, 51 ... Filter, 52 ... Light emitting diode, 53 ... Filter, 61 ... Light emission machine, 71 ... Filter, 72 ... Load 73 ... Filter 74 ... Load 81 ... Control device 91 ... Control device 101,102 ... Half-wave rectifier circuit 111 ... Light emitting diode 131 ... Control device 132,133 ... Light emitter 201 ... Confirmation 211, video camera, 212, A / D conversion unit, 213, image data storage unit, 214, control unit, 215, input unit, 216, setting unit, 217, program storage unit, 218, data storage unit, 219 ... Display unit, 231 ... Control device, 241 ... Sensor, 251 ... Control device, 261 ... Memory

Claims (13)

In the railway light-emitting device control circuit for controlling the railway light-emitting device, a control device for controlling a plurality of railway light-emitting devices,
The control device includes:
Generating means for generating signals of a plurality of frequencies,
Switching control means for controlling the switching of signals of a plurality of frequencies,
The signals of a plurality of frequencies are transmitted to the railway light emitting device with a pair of cables,
The railway light emitter is
A light emitting diode;
And a filter for passing only a signal of a predetermined frequency through the light emitting diode. In the railway light emitter control circuit according to claim 1,
A plurality of the railroad light emitters are connected in series to one control device, and the light emitting diode and the filter constitute a parallel resonance circuit. Machine control circuit. In the railway light emitter control circuit according to claim 1,
A plurality of the railway light emitters are connected in series to one control device, and the light emitting diode and the filter constitute a series resonance circuit. Machine control circuit. In the railway light-emitting device control circuit according to claim 2 or 3,
The generation means generates a signal having a frequency for detecting disconnection,
The control device further includes a disconnection detecting means for detecting a disconnection by monitoring a signal level of the frequency for detecting the disconnection. In the railway light emitter control circuit according to claim 1,
A plurality of the railroad light emitters are connected in parallel to the one control device, and the light emitting diode and the filter constitute a parallel resonance circuit. Machine control circuit. In the railway light emitter control circuit according to claim 1,
A plurality of the railroad light emitters are connected in parallel to the one control device, and the light emitting diode and the filter constitute a series resonance circuit. Machine control circuit. In the railway light emitter control circuit according to claim 1,
The control device further includes half-wave rectification means for half-wave rectifying a signal having a predetermined frequency,
In addition to each of the signals of a plurality of frequencies, the switching control means also controls switching for the positive and negative signals half-wave rectified by the half-wave rectification means,
The light emitting diode control circuit according to claim 1, wherein the light emitting diode of the railroad light emitter is connected with a polarity that allows only a signal of a predetermined polarity to pass. In the railway light-emitting device control circuit for controlling the railway light-emitting device, a control device for controlling a plurality of railway light-emitting devices,
The control device includes:
Generating means for generating a signal at at least one frequency;
Half-wave rectification means for half-wave rectifying a signal of a predetermined frequency generated by the generation means;
Switching control means for controlling switching of each of positive and negative polarity signals half-wave rectified by the half-wave rectification means,
The positive and negative signals are transmitted to the railway light emitter via a pair of cables,
The railway light emitter is
With light emitting diodes,
The light emitting diode is connected with a polarity that passes only a signal of a predetermined polarity. The railway light-emitting device control circuit according to claim 8,
A plurality of railroad light emitters are connected in series to one of the control devices, and are in parallel resonance with the light emitting diode and a filter for allowing only a signal of a predetermined frequency to pass through the light emitting diode. A railway light-emitting device control circuit characterized by comprising a circuit. The railway light-emitting device control circuit according to claim 8,
A plurality of the rail light emitters are connected in series to the one control device, and the series light is emitted from the light emitting diode and a filter for allowing only a signal having a predetermined frequency to pass through the light emitting diode. A railway light-emitting device control circuit characterized by comprising a circuit. In the railway light-emitting device control circuit according to claim 9 or 10,
The generation means generates a signal having a frequency for detecting disconnection,
The control device further includes a disconnection detecting means for detecting a disconnection by monitoring a signal level of the frequency for detecting the disconnection. The railway light-emitting device control circuit according to claim 8,
A plurality of railroad light emitters are connected in parallel to one control device, and are in parallel resonance with the light emitting diode and a filter for allowing only a signal of a predetermined frequency to pass through the light emitting diode. A railway light-emitting device control circuit characterized by comprising a circuit. The railway light-emitting device control circuit according to claim 8,
A plurality of the railroad light emitters are connected in parallel to the single control device, and the series light-emitting diode is connected in series with the light-emitting diode and a filter for allowing only a signal having a predetermined frequency to pass through the light-emitting diode. A railway light-emitting device control circuit characterized by comprising a circuit.

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