JP2010015491A - Traffic signal controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traffic signal controller that can prevent provision of erroneous signal information. <P>SOLUTION: A main door is opened/closed mainly when a maintenance personnel checks up and maintains the traffic signal controller 100, and a small door is opened/closed mainly when a police officer manually switches the lighting state of a traffic light. A door open/close sensor unit 12, which is equipped with a sensor to detect opened/closed state or opening/closing operations of the main door and the small door, outputs a detected result to a control unit 10 when detecting opened/closed state or opening/closing operations of the main door and the small door. The control unit 10 suspends provision of predetermined signal information via communication unit 15 when detecting opened state or opening operation of the main door and the small door, and resumes provision of the signal information when detecting closed state or closing operation of the main door and the small door. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a traffic signal controller, and more particularly to a traffic signal controller capable of providing a vehicle with signal information related to the display of a signal lamp.

  Traffic that controls lighting, turning off, or blinking of blue, yellow, red, blue arrows, etc. of signal lights installed at predetermined positions such as intersections or pedestrian crossings to ensure safe traffic for vehicles or pedestrians Technology development related to signal controllers is underway.

For example, signal information indicating the lighting state of a signal lamp (traffic signal) is transmitted to the vehicle by radio waves from the road facing the lighting display surface of the signal lamp, and the vehicle receives this radio wave and displays the lighting status of the signal lamp A traffic signal warning system is disclosed in which the driver can clearly confirm the lighting of the front signal lamp by displaying the information (see Patent Document 1).
JP 7-37196 A

  However, the system of Patent Document 1 only provides the lighting state of the signal lamp at the time when the vehicle receives the signal information. Also, if the vehicle receives the signal information when the vehicle is in the vicinity of the installation location of the signal lamp, the driver can check the lighting state of the signal lamp at that time, but the vehicle has moved away from the signal lamp. Even if the signal information is received at the position, when the vehicle comes near the signal lamp, the lighting condition of the signal lamp has already changed, so it is difficult for the driver to predict the lighting condition of the signal lamp in advance. there were. For this reason, it has been desired to provide information so that the driver can grasp in advance the lighting state of the signal lamp in the near future, for example, after a few seconds to a few tens of seconds later.

  On the other hand, the traffic signal controller is provided with an open / close door so that an operation panel and switches disposed therein can be accessed when performing maintenance or inspection. If the traffic signal controller simply controls the signal lamp, there is no particular problem even if maintenance personnel access the inside during maintenance or inspection. However, when sending near future signal information from the traffic signal controller to the vehicle, there is a risk that the current lighting state of the signal lamp and the signal information provided to the vehicle will be inconsistent due to human operation such as maintenance personnel, Disturbance of information provision could not be prevented.

  This invention is made | formed in view of such a situation, and it aims at providing the traffic signal controller which can prevent provision of incorrect signal information.

  A traffic signal controller according to a first aspect of the present invention is capable of providing signal information relating to display of a signal lamp to a vehicle, and is a box-shaped traffic signal controller having a door. It is characterized by comprising detection means for detecting an operation and control means for controlling the provision of signal information in accordance with the detection result detected by the detection means.

  The traffic signal controller according to a second aspect of the present invention is the traffic signal controller according to the first aspect, wherein the control means controls to stop providing signal information when the detection means detects the opening or the opening operation. It is characterized by being.

  In the traffic signal controller according to a third aspect of the present invention, in the second aspect, the signal information includes current information regarding the signal lamp color currently displayed by the signal lamp and schedule information regarding the signal lamp color to be displayed in the future. The control means is configured to control to stop providing the schedule information in the switching step after the time when the detection means detects the opening or the opening operation.

  In the traffic signal controller according to a fourth aspect of the present invention, in the second or third aspect of the invention, the control means controls to restart providing the signal information when the detection means detects the closing or the closing operation. It is configured.

  A traffic signal controller according to a fifth aspect of the present invention is the traffic signal controller according to any one of the first to fourth aspects, further comprising a lock portion provided on the door and having a key insertion opening, wherein the detecting means includes the key When it is inserted into the insertion slot, the door opening operation is detected.

  A traffic signal controller according to a sixth aspect of the present invention is the traffic signal controller according to any one of the first to fourth aspects, further comprising: a lock portion provided on the door; and the detection means when the lock portion is unlocked. The door opening operation is configured to be detected.

  A traffic signal controller according to a seventh aspect of the present invention is the traffic signal controller according to any one of the first to sixth aspects, wherein the light emitting unit disposed inside the door and the light emitting unit emits the door in a closed state. And a light receiving portion that receives light reflected by the door, and the detecting means is configured to detect opening or opening operation when light cannot be received by the light receiving portion. And

  The traffic signal controller according to an eighth aspect of the present invention is the traffic signal controller according to any one of the first to seventh aspects, wherein the first door is opened during manual operation of the signal lamp, and the second door is opened during maintenance. The detection means is configured to detect opening / closing or opening / closing operation of at least one of the first door and the second door.

  In the first invention, the traffic signal controller controls the provision of signal information to the vehicle according to the result of detecting the opening / closing or opening / closing operation of the door. The opening and closing of the door is, for example, a state where the door is open (open) or a state where the door is closed (closed). The door opening / closing operation includes a door opening operation and a door closing operation. The door opening operation includes, for example, an operation of inserting a key into a lock hole provided in the door, and an operation of unlocking (for example, turning a key). Operation) and opening the door. The operation for closing the door includes, for example, an operation for closing the door and an operation for locking. The traffic signal controller stops providing signal information to the vehicle when the door is opened or when an opening operation is detected. Moreover, the traffic signal controller restarts provision of signal information to the vehicle when the door is closed or when a door closing operation is detected. As a result, even if a situation occurs in which the actual lighting state of the signal lamp and the signal information provided to the vehicle do not match due to human operation by maintenance personnel after the door is opened, the incorrect signal information Providing can be prevented.

  In the second invention, the traffic signal controller controls to stop providing the signal information when the opening or the opening operation is detected. As a result, even if a situation occurs in which the actual lighting state of the signal lamp and the signal information provided to the vehicle do not match due to human operation by maintenance personnel after the door is opened, the incorrect signal information Providing can be prevented.

  In the third aspect of the invention, the traffic signal controller provides signal information including current information on the signal lamp color currently displayed by the signal lamp and schedule information on the signal lamp color to be displayed in the future. The traffic signal controller controls to stop providing the schedule information for the switching step after the time when the opening or the opening operation is detected. For example, provision of schedule information after the step following the step currently being executed is stopped. As a result, even if a situation occurs in which the actual lighting state of the signal lamp and the signal information provided to the vehicle do not match due to human operation by maintenance personnel after the door is opened, the actual signal lamp Provision of erroneous signal information different from the lighting state can be prevented.

  In the fourth invention, when the traffic signal controller detects the closing or the closing operation, the traffic signal controller controls to restart the provision of the signal information. In this way, if it is ensured that a situation in which the actual lighting state of the signal lamp does not match the signal information provided to the vehicle by human operation by maintenance personnel, etc., the signal information is promptly Can be provided to the vehicle.

  In the fifth invention, the traffic signal controller detects a door opening operation when the key is inserted into the insertion slot of the lock portion. Thereby, opening operation can be detected rapidly.

  In the sixth aspect of the invention, the traffic signal controller detects the opening operation when the lock part is unlocked. Thereby, provision of signal information can be promptly stopped before a human operation by maintenance personnel or the like is performed.

  In the seventh invention, the traffic signal controller includes a light emitting unit disposed inside the door and a light receiving unit that receives light emitted from the light emitting unit and reflected by the door in a state where the door is closed. Prepare. The traffic signal controller detects opening or opening operation when light cannot be received by the light receiving unit. Thereby, opening / closing of a door can be detected reliably.

  In the eighth invention, the traffic signal controller includes a first door that opens when the signal lamp is manually operated, and a second door that opens during maintenance, and opens / closes or opens / closes at least one of the doors. Detect operation. Thereby, for example, when a police officer opens a door and manually operates a signal lamp, or when maintenance personnel perform maintenance or inspection, it is possible to prevent erroneous signal information from being provided.

  According to the present invention, it is possible to prevent provision of erroneous signal information.

  Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof. FIG. 1 is an external perspective view of a traffic signal controller 100 according to the present invention, and FIG. 2 is a block diagram showing an example of the configuration of the traffic signal controller 100 according to the present invention. As shown in FIG. 1, the traffic signal controller 100 has a box shape, a main body 50 having an opening on one side, a main door (second door) 51 for opening and closing the opening of the main body 50, and the like. I have. The main door 51 is provided with an independent space portion having a required dimension and a small door (first door) 40 for opening and closing the space portion.

  The main door 51 is provided with a lock 52 having a key insertion opening. The main door 51 can be opened by unlocking the lock 52, and the main door 51 is securely closed by locking the lock 52. It is possible to prevent a third party from opening the door illegally. Further, the small door 40 is provided with a lock 41 having a key insertion opening. The small door 40 can be opened by unlocking the lock 41, and the small door 40 can be reliably secured by locking the lock 41. It is possible to prevent the third party from opening the door illegally.

  The main door 51 is a door that is opened and closed mainly when maintenance personnel inspect and maintain the traffic signal controller 100, and the small door 40 is mainly used when a police officer manually switches the lighting state of the signal lamp. It is a door that opens and closes.

  As shown in FIG. 2, the traffic signal controller 100 includes a control unit 10 that controls the entire traffic signal controller 100, a timer 11 for timing, an open / closed state of the main door 51 and the small door 40, and the main door 51 and the small door. Required for door opening / closing detection unit 12 for detecting the opening / closing operation of 40, a lamp driving unit 13 for driving the signal lamp to turn on / off each lamp color of a signal lamp (not shown), and each part in the traffic signal controller 100 A power supply unit 14 for supplying a predetermined voltage, a communication unit for transmitting / receiving predetermined data to / from a vehicle or a roadside machine having a communication function with a vehicle, and a control device such as a traffic control center 15. A storage unit 16 for storing predetermined information, an interface unit having a communication function with an external device such as another traffic signal controller, an ultrasonic sensor, a light sensor, an image sensor or an information board 17 etc. are provided.

  The control unit 10 plays a central role in signal control, and has a hierarchical structure including a CPU 101, a signal control dedicated LSI 102 that controls a signal lamp, and the like. Further, the CPU 101 and the signal control dedicated LSI 102 have a diagnosis function for detecting an abnormality on the other side, and outputs an abnormality signal when an abnormality occurs in the control unit 10.

  The CPU 101 acquires a signal control command from the control device of the traffic control center via the communication unit 15, calculates a signal switching time based on the acquired signal control command, and sends a signal lamp switching timing signal to the lamp driving unit 13. Output to. Further, the CPU 101 stores and collects execution information of signal control actually performed in the storage unit 16 and transmits the execution information collected through the communication unit 15 to the control device.

  The CPU 101 determines whether or not the timer 11 is normal. Further, the CPU 101 acquires the blue lamp lighting signal output from the lamp driving unit 13 and determines whether or not the color of the signal lamp corresponding to each of the intersecting roads is blue at the same time (GG detection determination). ) Process.

  The CPU 101 controls the provision of signal information to the vehicle or the roadside machine according to the detection result of the door opening / closing detection unit 12. More specifically, when opening of the main door 51 or the small door 40 (open state) or an opening operation of the main door 51 or the small door 40 is detected, provision of predetermined signal information is stopped, When the closing of the main door 51 or the small door 40 (closed state) or the closing operation of the main door 51 or the small door 40 is detected, the provision of information is resumed. The details of the signal information provision control method will be described later.

  The door opening / closing detection unit 12 includes a sensor that detects opening / closing or opening / closing operation of the main door 51 and the small door 40. When the opening / closing operation of the main door 51 or the small door 40 is detected, the detection result is sent to the control unit 10. Output. The opening / closing of the main door 51 or the small door 40 is, for example, a state where the main door 51 or the small door 40 is opened (opened) or a closed state (closed door). The operation of opening the door includes, for example, an operation of inserting a key into a lock hole provided in the main door 51 and the small door 40, an operation of unlocking (for example, an operation of turning the key), the main door 51 or the small door 40. For example, an opening operation. The operation for closing the door is, for example, an operation for closing the main door 51 or the small door 40, an operation for locking, and the like. The door opening / closing detection unit 12 can detect the above-described opening or opening operation and closing or closing operation. Note that the door opening / closing detection unit 12 may issue an alarm such as a buzzer when an opening or an opening operation is detected.

  The lamp driving unit 13 includes an SSU (solid state relay unit, SSR unit) corresponding to each signal lamp, and a voltage applied to the SSU by a signal lamp switching timing signal output from the control unit 10 (for example, , AC100V). Thereby, the lamp drive unit 13 turns on or off each lamp color of the signal lamp according to the switching timing. The lamp driving unit 13 detects the lighting of the blue lamp color of the signal lamp and notifies the control unit 10 of the lighting.

  The power supply unit 14 is configured by a rectifier circuit, a constant voltage circuit, and the like, and converts a voltage (for example, AC 100V) supplied from a commercial power source into a predetermined DC voltage so that each unit in the traffic signal controller 100 operates. Supply the required DC voltage as required.

  The communication unit 15 includes a communication interface function for transmitting and receiving information to and from a vehicle, a roadside device having a communication function with the vehicle, a traffic control center control device, and the like. For example, the communication unit 15 transmits predetermined signal information to be provided to the vehicle directly to the vehicle or to the roadside machine. In addition, the communication unit 15 transmits the execution information of the actually performed signal control to the control device. Further, the communication unit 15 receives a signal control command from the control device.

  The interface unit 17 transmits a command from the control unit 10 to an external device such as an ultrasonic sensor, a light sensor, an image sensor, an information board, or another traffic signal controller. The interface unit 17 receives information from an external device and outputs the information to the control unit 10.

  3 is an external perspective view of the traffic signal controller 100 with the small door 40 opened, and FIG. 4 is an external perspective view of the traffic signal controller 100 with the main door 51 open. As shown in FIG. 3, an automatic / manual switch 45 is accommodated in the space 44, and the automatic / manual switch 45 can be accessed by opening the small door 40. Then, each time the automatic / manual switch 45 is operated (the push button switch is pressed), one step of the signal lamp can be advanced. Further, the locking member of the lock body 42 attached to the small door 40 is locked to the lock receiving member 43 attached to the main door 51 side or detached from the lock receiving member 43 according to the locking or unlocking. The small door 40 can be opened and closed.

  As shown in FIG. 4, the main door 51 is attached to the main body 50 so as to be rotatable by hinges 58,. On the back surface of the main door 51, a housing 55 for fixing a space 44 for accommodating the automatic / manual changeover switch 45 is fixed. Thereby, even when the main door 51 is opened, the automatic / manual switch 45 accommodated in the space 44 cannot be accessed. In addition, when the main door 51 is opened, inspection or maintenance can be performed by accessing the internal display panel 56, operation panel 57, and the like. Further, the locking member of the lock main body 53 attached to the main door 51 is locked to the lock receiving member 54 attached to the main body 50 side or released from the lock receiving member 54 according to locking or unlocking. The main door 51 can be opened and closed.

  FIG. 5 is a cutaway side view of the lock 52. Since the lock 41 has the same configuration, the lock 52 will be described below. In the lock 52, a rotor 522 is rotatably provided in a lock body 53. The rotor 522 is provided with an insertion port 523 for inserting a key. When the key is rotated, the rotor 522 is rotated, and the locking member 521 is interlocked with the rotor 522.

  A front plate of the rotor 522 is provided with a side plate 524 that is rotatable around a shaft 525 and is made of a magnetic material such as an iron plate. The side plate 524 is configured to be in a position indicated by a solid line in FIG. 5 by an urging means (not shown) such as a spring when the key is not inserted. Further, when the key is inserted into the insertion port 523, the side plate 524 rotates around the shaft 525 by being pressed by the key so as to reach a position covering the permanent magnet 526 as shown by a broken line in FIG. It is configured.

  That is, when the key is not inserted into the insertion slot 523, the reed switch 527 as a magnetic detection element is turned on by the magnetic lines of force from the permanent magnet 526. On the other hand, when the key is inserted into the insertion slot 523, the permanent magnet 526 is covered by the side plate 524, so that the magnetic lines of force from the permanent magnet 526 are shielded by the side plate 524, and the reed switch 527 is turned off. An on / off signal from the reed switch 527 is detected by the door opening / closing detection unit 12. Thereby, it can be detected whether or not the key has been inserted into the lock 52, and the door opening operation can be quickly detected.

  It is also possible to detect whether the lock 52 is unlocked or locked by providing detection means for detecting the rotation of the rotor 522 electrically or mechanically. Thereby, provision of signal information can be promptly stopped before a human operation by maintenance personnel or the like is performed.

  FIG. 6 is an explanatory diagram showing an example of a method for detecting opening and closing of the main door 51. Since the small door 40 has the same configuration, the main door 51 will be described below. 6A shows a state in which the main door 51 that can be opened and closed around the hinge 58 is closed, and FIG. 6B shows a state in which the main door 51 is opened. A circuit board 60 is arranged inside the main door 51 so as to face the main door 51. The circuit board 60 can be fixed to a housing or chassis (not shown) inside the traffic signal controller 100. A light emitting diode 61 as a light emitting portion and a phototransistor 62 as a light receiving portion are mounted on the surface of the circuit board 60. The light emitting diode 61 may always emit light of a predetermined wavelength, or may repeat light emission at a constant period (for example, 200 ms or longer) for a predetermined time (for example, about 10 ms).

  As shown in FIG. 6A, when the main door 51 is closed, the light emitted from the light emitting diode 61 is reflected by the reflecting plate 511 attached to the inner surface of the main door 51 and received by the phototransistor 62. Is done. The phototransistor 62 converts the received light into an electrical signal, and outputs the converted electrical signal to the door opening / closing detection unit 12. Thereby, the door opening / closing detection part 12 can detect reliably that the main door 51 is closed.

  On the other hand, as shown in FIG. 6B, when the main door 51 is open, the light emitted from the light emitting diode 61 is reflected by the reflection plate 511 attached to the inner surface of the main door 51. Light is not received by the phototransistor 62. For this reason, the phototransistor 62 does not output an electrical signal to the door opening / closing detection unit 12. Thereby, the door opening / closing detection part 12 can detect reliably that the main door 51 is open.

  Note that the light emitted from the light emitting diode 61 is arranged on the straight line perpendicular to the axis around which the main door 51 rotates, and the light emitting diode 61 and the phototransistor 62 are arranged near the axis. Since even a slight rotation angle 51 is reflected relatively large, it is possible to reliably detect whether the main door 51 is completely closed or even slightly opened.

  FIG. 7 is an explanatory diagram showing an example of step information included in the signal information. The step information includes the number of steps in which the color of any one of the signal lamps controlled by the traffic signal controller 100 is switched, the set time of each step, the step number currently being executed, the elapsed time of the step currently being executed, and the like. It is configured. Further, the step information indicates information for one cycle of the signal lamp controlled by the traffic signal controller 100.

  The example of FIG. 7 shows that one cycle of the signal lamp is composed of 24 steps. In addition, each step follows, for example, a blue light, a yellow light, a red light and a blue arrow of a vehicle lamp on the main road side, a blue light, a blue blinking and a red light of a pedestrian lamp on the main road side. It is determined by a combination of a blue light, a yellow light, a red light and a blue arrow of a vehicle lamp on the road side, a blue light, a blue flashing and a red light of a pedestrian lamp on the main road side.

  FIG. 8 shows an example of lamp color information included in the signal information. In FIG. 8, vertical numbers 1 to 6 and horizontal letters A to F indicate the number of control interfaces to be controlled by the traffic signal controller 100. That is, the traffic signal controller 100 includes 6 × 6 = 36 interfaces in one step. In FIG. 8, PG indicates pedestrian blue, PR indicates pedestrian red, A indicates vehicle blue arrow, G indicates vehicle blue, Y indicates vehicle yellow, and R indicates vehicle red. The number of interfaces and the light color are examples, and are not limited thereto.

  FIG. 9 is an explanatory diagram showing a part of signal information provided to the vehicle. FIG. 9A shows the lamp color information of the step currently being executed, and FIG. 9B shows the lamp color information of the next step. The actually provided signal information includes the light color information of all steps. In FIG. 9, numeral 0 indicates lighting and numeral 1 indicates extinguishing. The number 2 indicates blinking. In the example of FIG. 9, it can be seen that the 1A pedestrian blue light is lit at the step currently being executed, and is switched to blinking at the next step. The subsequent steps can be expressed in the same manner, but the description thereof will be omitted.

  FIG. 10 is an explanatory diagram showing an example when incorrect signal information is provided. FIG. 10A shows a part of signal information provided to the vehicle. As shown in FIG. 10A, it is assumed that the signal lamp is red in the step currently being executed and is blue in the next step. The driver of the vehicle who has acquired the signal information can know the time until switching from red to blue based on the set time and elapsed time of the step currently being executed. And, from the time to switch to blue and the distance to the intersection where the signal lamp is installed, it is judged that if you drive at the current vehicle speed, you can pass the intersection in blue, and you ran without deceleration before the intersection To do.

  However, as shown in FIG. 10B, it is assumed that, for example, a small door 40 is opened at this time and a manual operation is performed so as to continue the red light. In this case, according to the signal information provided to the vehicle, the color of the signal lamp is not changed to blue but remains red even when switching from red to blue. That is, a mismatch with the provided signal information occurs. And the driver of the vehicle is forced to perform dangerous driving such as stepping on the brake suddenly because the signal lamp is switched to red even though the signal lamp is determined to be switched to blue. .

  When the door opening / closing detection unit 12 detects the opening or opening operation of the main door 51 or the small door 40, the control unit 10 detects signal information subsequent to the step currently being executed (for example, a signal lamp to be displayed in the future). Discontinue provision of color schedule information). As a result, even if a situation occurs in which the lighting state of the actual signal lamp and the signal information provided to the vehicle do not match due to human operation by maintenance personnel or police officers after the door is opened, the actual signal lamp Providing incorrect signal information different from the lighting state of the device can be prevented.

  In addition, when the control unit 10 detects an operation or closing of the main door 51 or the small door 40 once opened by the door opening / closing detection unit 12, the control unit 10 resumes providing signal information. As a result, if it is ensured that a situation in which the actual lighting state of the signal lamp does not match the signal information provided to the vehicle by human operation by maintenance personnel or police officers will promptly Signal information can be provided to the vehicle.

  Next, the operation of the traffic signal controller 100 will be described. FIG. 11 is a flowchart showing a control processing procedure for providing signal information. The control unit 10 determines whether or not it is normal (S11). If it is normal (YES in S11), it determines whether or not the timer is normal (S12). When the timer is normal (YES in S12), the control unit 10 determines whether or not the lamp color of the signal lamp is normal by performing GG detection determination (S13).

  When the color of the signal lamp is normal (YES in S13), the control unit 10 determines whether or not the opening operation of the small door 40 has been performed (S14). The presence or absence of the door opening operation can be determined by the operation of inserting the key into the keyhole of the lock 41, the operation of unlocking (for example, the operation of turning the key), or the operation of opening the small door 40. Further, the determination can be made based on the presence or absence of an electrical signal output from the phototransistor 62. Note that, in place of the door opening operation, in addition to the door opening operation, it is also possible to determine the presence or absence of the door opening (a state where the door is opened).

  When there is no opening operation of the small door 40 (NO in S14), the control unit 10 determines whether or not the opening operation of the main door 51 has been performed (S15). The presence / absence of the door opening operation can be determined by the operation of inserting the key into the keyhole of the lock 52, the operation of unlocking (for example, the operation of turning the key), and the presence / absence of the operation of opening the main door 51. Further, the determination can be made based on the presence or absence of an electrical signal output from the phototransistor 62.

  When there is no opening operation of the main door 51 (NO in S15), the control unit 10 provides signal information to the vehicle or the roadside machine (S16), determines whether there is an end instruction (S17), and there is no end instruction. In the case (NO in S17), the processing after step S11 is continued.

  If the timer itself is not normal (NO in S11), the timer is not normal (NO in S12), or if the signal lamp is not normal (NO in S13), the control unit 10 stops providing signal information. (S18), the controller is notified of the abnormality (S19), and the process is terminated.

  When there is an opening operation of the small door 40 (YES in S14), or when there is an opening operation of the main door 51 (YES in S15), the control unit 10 receives signal information (for example, schedule information). The provision is stopped (S20), the opening information indicating that the door has been opened is notified to the control device (S21), and the process is terminated. If there is an end instruction (YES in S17), the control unit 10 ends the process.

  As described above, according to the present invention, even when signal information in the near future is provided from the traffic signal controller to the vehicle, the traffic signal controller always provides correct signal information. The fail-safe function is enhanced and the reliability is significantly improved. In addition, even if the operation of the signal lamp is changed due to an unexpected human operation after the door opening operation, it is possible to prevent erroneous signal information from being provided, and to prevent unexpected situations such as traffic accidents. Can be prevented.

  In the above-described embodiment, the structure of the lock is an example, and the structure is not limited to this, and may be a structure such as a limit switch provided on the door. Moreover, as long as it can detect opening and closing of a door, it may be of any configuration regardless of mechanical or electronic. In addition, only the lock may be used for detecting the opening / closing of the door, or only a combination of the light emitting diode and the phototransistor may be used, or a combination of both the lock and the combination of the light emitting diode and the phototransistor may be used.

  In the above-described embodiment, the traffic signal controller is a centralized control type having a communication function with the control device, but is not limited to this, and is a point control that does not communicate with the control device. It may be in the form.

  The embodiments and examples disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments and examples but by the scope of claims, and is intended to include all modifications and variations within the meaning and scope equivalent to the scope of claims. .

1 is an external perspective view of a traffic signal controller according to the present invention. It is a block diagram which shows an example of a structure of the traffic signal controller which concerns on this invention. It is an external appearance perspective view of the traffic signal controller of the state where the small door was opened. It is an external appearance perspective view of the traffic signal controller of the state which opened the main door. It is a fracture side view of a lock. It is explanatory drawing which shows an example of the method of detecting opening and closing of a main door. It is explanatory drawing which shows an example of the step information contained in signal information. An example of the lamp color information contained in signal information is shown. It is explanatory drawing which shows a part of signal information provided to a vehicle. It is explanatory drawing which shows an example when incorrect signal information is provided. It is a flowchart which shows the control processing procedure of provision of signal information.

Explanation of symbols

10 control unit 101 CPU
102 Dedicated LSI for signal control
DESCRIPTION OF SYMBOLS 11 Timer 12 Door open / close detection part 13 Lamp drive part 14 Power supply part 15 Communication part 16 Storage part 17 Interface part 40 Small door 41, 52 Lock 50 Main body 51 Main door

Claims (8)

It is possible to provide the vehicle with signal information related to the display of the signal lamp, and in a box-shaped traffic signal controller with a door,
Detecting means for detecting opening / closing or opening / closing operation of the door;
A traffic signal controller comprising: control means for controlling provision of signal information according to a detection result detected by the detection means. The control means includes
The traffic signal controller according to claim 1, wherein when the detection unit detects an opening or an opening operation, control is performed so as to stop providing signal information. The signal information includes current information on the signal lamp color currently displayed by the signal lamp and schedule information on the signal lamp color to be displayed in the future,
The control means includes
3. The traffic signal control according to claim 2, wherein control is performed so as to stop provision of schedule information in a switching step after the time when the detection means detects the opening or the opening operation. Machine. The control means includes
The traffic signal controller according to claim 2 or 3, wherein when detecting the closing or closing operation by the detecting means, the control is performed so as to resume the provision of the signal information. The door is provided with a lock portion having a key insertion opening,
The detection means includes
The traffic signal controller according to any one of claims 1 to 4, wherein when the key is inserted into the insertion slot, a door opening operation is detected. Comprising a lock provided on the door;
The detection means includes
The traffic signal controller according to any one of claims 1 to 4, wherein when the lock portion is unlocked, a door opening operation is detected. A light emitting part disposed inside the door;
A light receiving portion that receives light emitted from the light emitting portion and reflected by the door in a state where the door is closed;
The detection means includes
The traffic signal controller according to any one of claims 1 to 6, wherein when the light cannot be received by the light receiving unit, an opening or an opening operation is detected. A first door that opens during manual operation of the signal lamp;
A second door that opens during maintenance, and
The detection means includes
The traffic signal according to any one of claims 1 to 7, wherein the traffic signal is configured to detect an opening or closing operation of at least one of the first door and the second door. Control machine.

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