JP5999819B2 - Traffic information transmission device, central device, traffic information transmission system, and traffic information transmission program - Google Patents

Description

  The present invention relates to a traffic information transmission device, a central device, a traffic information transmission system, and a traffic information transmission program, and in particular, a traffic information transmission device, a central device, a traffic information transmission system, and a traffic information transmission capable of transmitting status information of a target device. Regarding the program.

  A traffic control system that transmits traffic information between a signal controller and a vehicle detector and between a signal controller and a central device in a control center in order to control the color of signal lights at a plurality of intersections. Has been developed.

  As an example of a device in the traffic control system, for example, Japanese Patent Laid-Open No. 2008-226278 (Patent Document 1) discloses the following configuration. That is, the transmission system conversion apparatus includes a first apparatus as an application that performs communication using the first transmission system and a second apparatus as an application that performs communication using the second transmission system as devices constituting the traffic control system. Receiving means for receiving a message of the first transmission method from the first device, wherein the receiving device is used between the first device and the second device in the traffic control system. Conversion means for converting the message of the first transmission method into the message of the second transmission method, and transmission means for transmitting the message of the second transmission method obtained by the conversion to the second device.

JP 2008-226278 A

  In the traffic control system, as a function of a device that transmits traffic information collected at a certain point to the central device, a function of collecting the status of peripheral devices and notifying the central device is conceivable. In such a device, a technique capable of notifying the central device of the state of the peripheral device with a simple configuration is desired.

  This invention was made in order to solve the above-mentioned subject, The objective is the traffic information transmission apparatus which can transmit the information regarding the state of an object apparatus with a simple structure, a central apparatus, and a traffic information transmission system And providing a traffic information transmission program.

  (1) In order to solve the above-mentioned problem, a traffic information transmission device according to an aspect of the present invention is a traffic information transmission device that transmits traffic information to a central device, and receives a status signal indicating the status of the target device. And the conversion corresponding to the state of the target device indicated by the state signal received by the state signal receiving unit among a plurality of types of conversion signals respectively corresponding to the plurality of states of the target device. A conversion signal output unit that outputs a signal, at least one of the plurality of types of conversion signals is a pulse signal, and further counts the pulses of the conversion signal output from the conversion signal output unit And a traffic information creation unit for notifying the central device of a count result obtained by the conversion signal processing unit.

  (8) In order to solve the above problems, a central device according to an aspect of the present invention is a central device that acquires traffic information from a traffic information transmission device, and is a pulse-shaped traffic signal indicating a traffic-related state. A receiving unit that receives data from the traffic information transmission device as the traffic information, which is a pulse count result and has a plurality of fields each of which can store a plurality of count results corresponding to the traffic signals; The traffic information transmission device is capable of generating a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, at least one of the plurality of types of converted signals is a pulse signal, and Assuming that the pulse count result of the converted signal is stored in at least one of a plurality of fields, the reception Comprising an acquisition unit capable of acquiring counting result of pulses of the converted signal from the received said data by.

  (10) In order to solve the above-described problem, a traffic information transmission system according to an aspect of the present invention includes a traffic information transmission device that transmits traffic information and a central device that receives the traffic information, and the traffic information The transmission apparatus counts the data of a format having a plurality of fields each of which is a count result of a pulse-shaped traffic signal indicating a traffic-related state and can store count results corresponding to the plurality of traffic signals. To the central device, and the traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals. Is a pulse signal, and the traffic information transmission apparatus transmits the converted signal to at least one of the plurality of fields. The central device receives the traffic information from the traffic information transmission device and acquires the pulse count result of the converted signal from the field in the data that is the traffic information received. To do.

  (11) In order to solve the above-described problem, a traffic information transmission program according to an aspect of the present invention is a traffic information transmission program used in a traffic information transmission device that transmits traffic information to a central device. A step of receiving a state signal indicating the state of the target device; and the conversion corresponding to the state of the target device indicated by the received state signal among a plurality of types of conversion signals respectively corresponding to the plurality of states of the target device A step of outputting a signal, wherein at least one of the plurality of types of conversion signals is a pulse signal, and further, counting the pulses of the output conversion signal, And a step of notifying the central device of a count result.

  (12) In order to solve the above-mentioned problem, a traffic information transmission program according to an aspect of the present invention is a traffic information transmission program used in a central device for acquiring traffic information from a traffic information transmission device, , A pulse count result of a pulse-shaped traffic signal indicating a state relating to traffic, and data in a format having a plurality of fields each capable of storing count results corresponding to a plurality of traffic signals as the traffic information The step of receiving from the information transmission device and the traffic information transmission device can generate a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of conversion signals. Is a pulse signal, and at least any one of the plurality of fields. Examples converted signal pulse count result of is stored, a program for the said received data and a step of obtaining a pulse count result of the converted signal to.

  ADVANTAGE OF THE INVENTION According to this invention, the information regarding the state of an object apparatus can be transmitted with a simple structure.

FIG. 1 is a diagram showing a configuration of a traffic information transmission system according to the first embodiment of the present invention. FIG. 2 is a diagram for explaining an example of traffic information creation of the signal controller in the traffic information transmission system according to the first embodiment of the present invention. FIG. 3 is a diagram for explaining an example of the output signal of the target device in the traffic information transmission system according to the first embodiment of the present invention and a problem related thereto. FIG. 4 is a diagram showing a configuration of a signal controller in the traffic information transmission system according to the first embodiment of the present invention. FIG. 5 is a diagram illustrating a configuration of the converted signal output unit in the signal controller according to the first embodiment of the present invention. FIG. 6 is a time chart showing the operation of the converted signal output unit according to the first embodiment of the present invention. FIG. 7 is a diagram showing an example of a frame configuration of traffic information in the traffic information transmission system according to the first embodiment of the present invention. FIG. 8 is a diagram showing the configuration of the central device in the traffic information transmission system according to the first embodiment of the present invention. FIG. 9 is a diagram showing a configuration of a traffic information processing unit in the central device according to the first embodiment of the present invention. FIG. 10 is a diagram for explaining the monitoring process of the target device in the traffic information transmission system according to the first embodiment of the present invention. FIG. 11 is a flowchart defining the procedure of the monitoring information notification process by the signal controller according to the first embodiment of the present invention. FIG. 12 is a flowchart that defines the procedure of the monitoring process of the target device by the central device according to the first embodiment of the present invention. FIG. 13 is a diagram showing a configuration of a traffic information transmission system according to the second embodiment of the present invention. FIG. 14 is a diagram showing a configuration of a vehicle detector in the traffic information transmission system according to the second embodiment of the present invention.

  First, the contents of the embodiment of the present invention will be listed and described.

  (1) A traffic information transmission device according to an embodiment of the present invention is a traffic information transmission device that transmits traffic information to a central device, and a status signal receiving unit that receives a status signal indicating a status of a target device; Out of a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, a converted signal output that outputs the converted signal corresponding to the state of the target device indicated by the state signal received by the state signal receiving unit A conversion signal processing unit that counts pulses of the conversion signal output from the conversion signal output unit, and at least one of the plurality of types of conversion signals is a pulse signal, and A traffic information creation unit for notifying the central device of a count result obtained by the converted signal processing unit.

  With such a configuration, without increasing the transmission capacity from the traffic information transmission device to the central device, the central device can display the count result indicating the state of the target device with a simple configuration using the count result of the pulse of the converted signal. For example, the current state of the target device can be well understood. Therefore, information regarding the state of the target device can be transmitted with a simple configuration.

  (2) Preferably, the traffic information transmission apparatus further counts a traffic signal receiving unit that receives a pulsed traffic signal indicating a state related to traffic, and a pulse of the traffic signal received by the traffic signal receiving unit. A traffic signal processing unit, wherein the traffic information creation unit further notifies the central device of a count result by the traffic signal processing unit, and the traffic information creation unit corresponds to a plurality of the traffic signals. Data of a format having a plurality of fields each capable of storing a count result is transmitted to the central device, and the count result corresponding to the converted signal is stored in at least one of the plurality of fields.

  With such a configuration, it is possible to notify the state of the target device by diverting the existing configuration and communication processing for transmitting traffic information. That is, it is possible to transmit information related to the state of the target device together with the traffic information with a simple configuration without causing a significant change such as changing an existing communication standard or greatly changing the device configuration.

  (3) Preferably, at least any two of the plurality of types of conversion signals are a pulse signal and a fixed level signal.

  With such a configuration, for example, a plurality of types of conversion signals can be generated with a simple configuration without using a circuit that generates a plurality of types of pulse signals.

  (4) More preferably, at least one of the plurality of states is an abnormal state, and the conversion signal output unit outputs a signal of a fixed level as the conversion signal corresponding to the abnormal state.

  With such a configuration, even when a pulse signal cannot be generated due to some trouble in the traffic information transmission device or the like, it is possible to increase the possibility that an abnormal state can be detected in the central device.

  (5) Preferably, the conversion signal output unit can output the pulse signal in which a pulse is periodically generated.

  With such a configuration, when the increment of the count value of the pulse of the conversion signal is unstable in the central device, it is possible to determine a normal state or an abnormal state using a threshold value. Even when is unstable, the monitoring result of the target device in the central device can be stabilized.

  (6) More preferably, the converted signal output unit can output a plurality of types of pulse signals as a plurality of types of converted signals respectively corresponding to a plurality of states of the target device.

  With such a configuration, the central device can determine the state of the target device for the number of types of the period of the pulse signal according to the increment of the count value of the pulse of the conversion signal every predetermined time. It becomes possible.

  (7) Preferably, the conversion signal output unit can output pulse signals having a plurality of types of pulse widths as the plurality of types of conversion signals respectively corresponding to a plurality of states of the target device.

  With such a configuration, in the central device, the state of the target device is determined for the number of types of the pulse width of the pulse signal according to the increment of the count value of the pulse of the conversion signal every predetermined time. Is possible.

  (8) A central device according to an embodiment of the present invention is a central device that acquires traffic information from a traffic information transmission device, and is a pulse count result of a pulse-shaped traffic signal indicating a state related to traffic. A receiving unit that receives, as the traffic information, data of a format having a plurality of fields each capable of storing count results corresponding to the traffic signals from the traffic information transmission device, the traffic information transmission device being a target A plurality of types of conversion signals respectively corresponding to a plurality of states of the device can be generated, at least one of the plurality of types of conversion signals is a pulse signal, and further, at least one of the plurality of fields Assuming that any one of the count results of the converted signal pulses is stored, the data received by the receiving unit is stored. From comprises acquisition unit capable of acquiring counting result of pulses of the converted signal.

  With such a configuration, without increasing the transmission capacity from the traffic information transmission device to the central device, the central device can display the count result indicating the state of the target device with a simple configuration using the count result of the pulse of the converted signal. Can be acquired. Therefore, information regarding the state of the target device can be transmitted with a simple configuration.

  (9) Preferably, the said central apparatus is further provided with the judgment part which judges the state of the said object apparatus based on the change of the said count result acquired by the said acquisition part.

  With such a configuration, the current state of the target device can be well understood based on the count result acquired from the traffic information transmission device.

  (10) A traffic information transmission system according to an embodiment of the present invention includes a traffic information transmission device that transmits traffic information and a central device that receives the traffic information, and the traffic information transmission device is in a state related to traffic. A pulse-shaped traffic signal pulse count result indicating a plurality of fields each of which can store a count result corresponding to the plurality of traffic signals, and transmits the traffic data as the traffic information to the central device. The traffic information transmission device can generate a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of conversion signals is a pulse signal, The traffic information transmission device stores a pulse count result of the converted signal in at least one of the plurality of fields. Said central unit, said receiving the traffic information from the traffic information transmitting apparatus, obtains the pulse counting result of the converted signal from the field in the data is the traffic information received.

  With such a configuration, without increasing the transmission capacity from the traffic information transmission device to the central device, the central device can display the count result indicating the state of the target device with a simple configuration using the count result of the pulse of the converted signal. For example, the current state of the target device can be well understood. Therefore, information regarding the state of the target device can be transmitted with a simple configuration.

  (11) A traffic information transmission program according to an embodiment of the present invention is a traffic information transmission program used in a traffic information transmission device that transmits traffic information to a central device, and indicates a state of the target device to a computer. Receiving a signal, and outputting the converted signal corresponding to the state of the target device indicated by the received state signal among a plurality of types of converted signals respectively corresponding to the plurality of states of the target device. A program for execution, wherein at least one of the plurality of types of conversion signals is a pulse signal; and further, a step of counting pulses of the output conversion signal, and a count result to the central device This is a program for executing the step of notifying.

  With such a configuration, without increasing the transmission capacity from the traffic information transmission device to the central device, the central device can display the count result indicating the state of the target device with a simple configuration using the count result of the pulse of the converted signal. For example, the current state of the target device can be well understood. Therefore, information regarding the state of the target device can be transmitted with a simple configuration.

  (12) A traffic information transmission program according to an embodiment of the present invention is a traffic information transmission program used in a central device for acquiring traffic information from a traffic information transmission device, and shows a pulse indicating a traffic-related state to a computer. Receiving from the traffic information transmission device as traffic information, the data of a format having a plurality of fields each of which can store count results corresponding to a plurality of traffic signals. And the traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals is a pulse signal, Further, at least one of the plurality of fields may include a pulse count of the converted signal. As cement result is stored, a program for the said received data and a step of obtaining a pulse count result of the converted signal.

  With such a configuration, without increasing the transmission capacity from the traffic information transmission device to the central device, the central device can display the count result indicating the state of the target device with a simple configuration using the count result of the pulse of the converted signal. Can be acquired. Therefore, information regarding the state of the target device can be transmitted with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. Moreover, you may combine arbitrarily at least one part of embodiment described below.

<First Embodiment>
[Configuration and basic operation]
FIG. 1 is a diagram showing a configuration of a traffic information transmission system according to the first embodiment of the present invention.

  With reference to FIG. 1, the traffic information transmission system 301 includes a central device 201, a signal controller 101, a signal lamp 161, and a vehicle detector 111. In the traffic information transmission system according to the first embodiment of the present invention, the signal controller 101 operates as a traffic information transmission device.

  In FIG. 1, as an example, a state in which one signal controller 101 is connected to the central apparatus 201 is illustrated, but a configuration in which a plurality of signal controllers 101 are connected to the central apparatus 201 may be employed. 1 shows a state in which one signal lamp 161 and one vehicle detector 111 are connected to the signal controller 101 as an example, but a plurality of signal lamps 161 are connected to the signal controller 101. The signal controller 101 may be configured such that a plurality of vehicle detectors 111 are connected to the signal controller 101.

  The signal lamp 161 displays a signal to the driver or pedestrian of the automobile by switching the signal lamp color such as red, blue or yellow.

  The vehicle detector 111 detects the presence of the vehicle and transmits a detection signal indicating the detection result to the signal controller 101. The sensing signal is, for example, a pulse-like signal indicating the presence or absence of the vehicle every predetermined time in the sensing area.

  The signal controller 101 can communicate with the central apparatus 201 via a dedicated or general communication line. The central device 201 transmits a signal control command to the signal controller 101.

  The signal controller 101 switches the lamp color of the signal lamp 161 based on the signal control command transmitted from the central apparatus 201.

  Further, the signal controller 101 calculates, for example, the number of vehicles that have passed through the sensing area or the time ratio that the vehicle has existed in the sensing area based on the sensing signal received from the vehicle detector 111. The signal controller 101 reports such vehicle detection information to the central apparatus 201 as traffic information.

  The target device 181 is a peripheral device of the signal controller 101 and is, for example, a UPS (Uninterruptable Power Supply) that supplies power to the signal controller 101. The target device 181 may be a device built in the signal controller 101.

  The target device 181 transmits a state signal indicating its own state to the signal controller 101. Specifically, when the target device 181 is a UPS, for example, when it detects that the power supply from the power system side has stopped and supplies power to the signal controller 101, the target device 181 indicates an abnormal state. A status signal is transmitted to the signal controller 101. Alternatively, for example, when the target device 181 detects its own abnormality, the target device 181 transmits a state signal indicating an abnormal state to the signal controller 101.

  FIG. 2 is a diagram for explaining an example of traffic information creation of the signal controller in the traffic information transmission system according to the first embodiment of the present invention.

  With reference to FIG. 2, the vehicle detector 111 transmits a pulsed traffic signal indicating the presence or absence of vehicle detection to the signal controller 101. More specifically, the vehicle detector 111 outputs a logic low level traffic signal in a state where no vehicle is sensed in the sensing area, and a logic high level traffic in a state where the vehicle is sensed in the sensing area. A signal is transmitted to the signal controller 101. This traffic signal is, for example, a contact signal generated by switching an on state and an off state of a switch.

  The signal controller 101 counts, for example, the number of pulses of the traffic signal received from the vehicle sensor 111, specifically, for example, the number of rising edges of the traffic signal, and the pulse width of the traffic signal, that is, the traffic signal is Measure the time that is a logic high level.

  The central device 201 acquires traffic information such as vehicle sensing information from the signal controller 101 by transmitting a traffic information request to the signal controller 101 regularly or irregularly.

  Specifically, the signal controller 101 receives a traffic information request from the central device 201 and transmits traffic information including vehicle sensing information to the central device 201 at times t0, t1, t2, and t3, respectively.

  Here, the vehicle detector 111 transmits two pulses as traffic signals to the signal controller 101 during the period from time t0 to time t1. Further, the vehicle detector 111 transmits three pulses as traffic signals to the signal controller 101 during the period from time t1 to time t2. Further, the vehicle detector 111 transmits one pulse as a traffic signal to the signal controller 101 during the period from time t2 to time t3.

  In this case, the signal controller 101 receives two pulses from the vehicle sensor 111 as a traffic signal during a period from time t0 to time t1 when the traffic information was transmitted to the central device 201 last time at time t1. The traffic information indicating the count value “2” as the number of passing vehicles and the total time of the pulse widths of the two pulses as the occupation time are transmitted to the central device 201. In addition, the signal controller 101 receives three pulses from the vehicle sensor 111 as a traffic signal during a period from time t1 to time t2 when the traffic information was transmitted to the central device 201 last time at time t2. The traffic information indicating the count value “3” as the number of vehicles and the total time of the pulse widths of the three pulses as the occupation time is transmitted to the central device 201. In addition, at time t3, the signal controller 101 receives one pulse from the vehicle sensor 111 as a traffic signal during a period from time t2 to time t3 when the traffic information was transmitted to the central device 201 last time. The traffic information indicating the count value “1” as the number of vehicles and the pulse width of one pulse as the occupation time is transmitted to the central device 201.

  FIG. 3 is a diagram for explaining an example of the output signal of the target device in the traffic information transmission system according to the first embodiment of the present invention and a problem related thereto.

  Referring to FIG. 3, for example, target device 181 outputs a logic low level state signal in a normal state, and outputs a logic high level state signal in an abnormal state.

  In the signal controller 101, in order to report the state of the target device 181 to the central device 201, when the traffic information transmission method to the central device 201 as described in FIG. Occurs.

  Specifically, the signal controller 101 receives the traffic information request from the central device 201 and transmits the traffic information to the central device 201 at times t10, t11, t12, and t13, respectively.

  Here, the target device 181 first transmits a logic low level state signal indicating the normal state to the signal controller 101. Then, the target device 181 transmits a logic high level state signal indicating an abnormal state to the signal controller 101 from the middle of the period from time t11 to time t12.

  In this case, the signal controller 101 includes a rising edge in the state signal received from the vehicle detector 111 during the period from time t10 to time t11 when the state of the target device 181 was previously notified to the central device 201 at time t11. Therefore, the traffic information indicating the count value “0” is transmitted to the central device 201. In addition, the signal controller 101 includes one rising edge in the state signal received from the vehicle detector 111 during the period from time t11 to time t12 when the state of the target device 181 was previously notified to the central device 201 at time t12. Therefore, the traffic information indicating the count value “1” is transmitted to the central device 201. In addition, the signal controller 101 includes a rising edge in the state signal received from the vehicle detector 111 during the period from time t12 to time t13 when the state of the target device 181 was previously notified to the central device 201 at time t13. Therefore, the traffic information indicating the count value “0” is transmitted to the central device 201.

  Thereby, the central apparatus 201 can recognize that the abnormal state of the target apparatus 181 has occurred in the period from the time t11 to the time t12. However, on the other hand, the central device 201 cannot grasp whether or not the abnormal state of the target device 181 continues at time t12. Further, the central device 201 grasps whether or not the abnormal state of the target device 181 continues at the time t13 even when the traffic information indicating the count value “0” is received from the signal controller 101 at the time t13. Still can not. That is, the central device 201 can grasp that the target device 181 has been in an abnormal state in the past, while the current state of the target device 181, specifically, whether the abnormal state continues or is in a normal state. I can't figure out what happened.

  In order to solve such a problem, for example, the signal controller 101 samples the level of the state signal at short intervals, and notifies the central device 201 of the sampling result, thereby causing the central device 201 to present It is possible to consider a configuration that makes it possible to grasp the state of

  However, with such a method, the transmission capacity from the signal controller 101 to the central device 201 increases.

  Therefore, the traffic information transmission system according to the first embodiment of the present invention solves the above problem by the following configuration and operation.

  FIG. 4 is a diagram showing a configuration of a signal controller in the traffic information transmission system according to the first embodiment of the present invention.

  Referring to FIG. 4, the signal controller 101 includes a central side receiving unit 11, a signal control unit 12, a central side transmitting unit 13, a traffic information creating unit 14, a traffic signal processing unit 15, and a status signal receiving unit. Unit 16, converted signal output unit 17, converted signal processing unit 18, and traffic signal receiving unit 19.

  The central receiving unit 11 receives a signal control command from the central device 201 and outputs the signal control command to the signal control unit 12.

  The signal control unit 12 switches the lamp color of the signal lamp 161 by transmitting a control signal to the signal lamp 161 based on the signal control command transmitted from the central apparatus 201.

  Further, the central receiving unit 11 receives a traffic information request from the central device 201 and outputs the traffic information request to the traffic information creating unit 14.

  The traffic signal receiving unit 19 receives a traffic signal from the vehicle detector 111 and outputs the traffic signal to the traffic signal processing unit 15.

  The traffic signal processing unit 15 counts the traffic signal pulses received from the traffic signal receiving unit 19 and outputs the count value and the pulse width to the traffic information creating unit 14 as a count result.

  The traffic information creation unit 14 notifies the central device 201 of the count result from the traffic signal processing unit 15. More specifically, the traffic information creation unit 14 creates traffic information based on the count result received from the traffic signal processing unit 15, and receives the traffic information request from the central reception unit 11, To the side transmitter 13.

  The central transmission unit 13 transmits the traffic information received from the traffic information creation unit 14 to the central device 201.

  The state signal receiving unit 16 receives the state signal from the target device 181 and outputs it to the converted signal output unit 17.

  The converted signal output unit 17 outputs a converted signal corresponding to the state of the target device 181 indicated by the state signal received from the state signal receiving unit 16 among a plurality of types of converted signals respectively corresponding to the plurality of states of the target device 181. To do. At least one of the plurality of types of converted signals is a pulse signal.

  For example, at least any two of the plurality of types of conversion signals are a pulse signal and a fixed level signal. Further, for example, at least one of the plurality of states of the target device 181 is an abnormal state.

  Specifically, for example, the conversion signal output unit 17 outputs a signal of a fixed level as a conversion signal corresponding to the abnormal state.

  Further, for example, the conversion signal output unit 17 can output a pulse signal in which pulses are periodically generated.

  The conversion signal processing unit 18 counts the pulses of the conversion signal received from the conversion signal output unit 17 and outputs the count value as the count result to the traffic information creation unit 14 as monitoring information.

  The traffic information creation unit 14 notifies the central device 201 of the count result obtained by the conversion signal processing unit 18. More specifically, when receiving the traffic information request from the central receiving unit 11, the traffic information creating unit 14 includes the monitoring information received from the conversion signal processing unit 18 in the traffic information and outputs it to the central transmitting unit 13.

  FIG. 5 is a diagram illustrating a configuration of the converted signal output unit in the signal controller according to the first embodiment of the present invention.

  Referring to FIG. 5, converted signal output unit 17 includes a pulse signal generation unit 41 and a selector 42.

  The pulse signal generation unit 41 generates, for example, a periodic pulse signal, that is, a pulse signal in which a pulse is periodically generated, and outputs the pulse signal to the selector 42. The frequency of the pulse signal is, for example, several Hz.

  Based on the logic level of the state signal received from the state signal receiving unit 16, the selector 42 outputs the pulse signal or ground voltage received from the pulse signal generating unit 41 to the converted signal processing unit 18 as a converted signal.

  FIG. 6 is a time chart showing the operation of the converted signal output unit according to the first embodiment of the present invention.

  Referring to FIG. 6, selector 42 outputs the pulse signal from pulse signal generation unit 41 as a conversion signal when the state signal received from state signal reception unit 16 is a logic low level signal indicating a normal state. .

  On the other hand, when the state signal received from the state signal receiving unit 16 is a logic high level signal indicating an abnormal state, the selector 42 outputs a ground voltage signal as a conversion signal.

  The circuit shown in FIG. 6 may be realized by newly adding a small number of circuit components, or by using a selector function and a counter function realized by a CPU (Central Processing Unit) to change the firmware. It may be realized without adding hardware, or may be realized by changing a circuit such as a PLD (Programmable Logic Device).

  FIG. 7 is a diagram showing an example of a frame configuration of traffic information in the traffic information transmission system according to the first embodiment of the present invention.

  Referring to FIG. 7, a traffic information frame is data in a format having a plurality of fields each capable of storing count results corresponding to a plurality of traffic signals.

  Specifically, the traffic information frame includes a header storing destination information and a payload storing various information.

  The payload includes fields D <b> 1 to D <b> 8 that can store a count result by the traffic signal processing unit 15.

  The traffic information creation unit 14 transmits a frame having such a format to the central apparatus 201, and stores a count result corresponding to the converted signal in at least one of the fields D1 to D8 in the frame. In this example, the monitoring information from the converted signal processing unit 18 is stored in the field D8.

  FIG. 8 is a diagram showing the configuration of the central device in the traffic information transmission system according to the first embodiment of the present invention.

  Referring to FIG. 8, central apparatus 201 includes reception unit 21, traffic information processing unit 22, signal control command creation unit 23, transmission unit 24, and storage unit 25.

  The receiving unit 21 receives, for example, a frame including traffic information from the signal controller 101 and outputs the frame to the traffic information processing unit 22. That is, the receiving unit 21 receives the data of a format having a plurality of fields each of which is a count result of a pulse-shaped traffic signal indicating a state related to traffic and can store count results corresponding to the plurality of traffic signals. Received from the signal controller 101 as information.

  The traffic information processing unit 22 acquires traffic information from the frame received from the reception unit 21, and outputs part or all of the acquired traffic information to the signal control command generation unit 23. In addition, the traffic information processing unit 22 stores part or all of the acquired traffic information in the storage unit 25.

  The signal control command creation unit 23 creates a signal control command creation based on the traffic information received from the traffic information processing unit 22 and outputs the created signal control command to the transmission unit 24.

  The transmission unit 24 transmits the traffic signal control command received from the signal control command creation unit 23 to the signal controller 101.

  In addition, the traffic information processing unit 22 creates a traffic information request regularly or irregularly and outputs it to the transmission unit 24.

  The transmission unit 24 transmits the traffic information request received from the traffic information processing unit 22 to the signal controller 101.

  FIG. 9 is a diagram showing a configuration of a traffic information processing unit in the central device according to the first embodiment of the present invention.

  The traffic information processing unit 22 counts the conversion signal pulse count from the frame, assuming that the conversion signal pulse count result is stored in at least one of the plurality of fields in the frame received from the reception unit 21. The result can be obtained.

  Specifically, referring to FIG. 9, traffic information processing unit 22 includes a monitoring information acquisition unit 31, a determination unit 32, a notification unit 33, and a setting reception unit 34.

  The setting receiving unit 34 sets, for example, on / off setting of a function for acquiring monitoring information included in traffic information from the user, and setting of data stored in any of the fields D1 to D8 as monitoring information. Accept. The setting reception unit 34 outputs setting information indicating such setting contents to the monitoring information acquisition unit 31.

  The monitoring information acquisition unit 31 acquires monitoring information from the traffic information acquired from the frame based on the setting information received from the setting reception unit 34 and outputs the monitoring information to the determination unit 32.

  The determination unit 32 determines the state of the target device 181 based on the monitoring information received from the monitoring information acquisition unit 31 and outputs the determination result to the notification unit 33. Specifically, for example, the determination unit 32 determines the state of the target device 181 based on the change in the count result of the converted signal pulse acquired by the monitoring information acquisition unit 31.

  The notification unit 33 notifies the user of the content of the determination result such as displaying the determination result received from the determination unit 32 on a display unit (not shown) or issuing an alarm.

  FIG. 10 is a diagram for explaining the monitoring process of the target device in the traffic information transmission system according to the first embodiment of the present invention.

  Referring to FIG. 10, signal controller 101 receives a periodic traffic information request from central apparatus 201, and transmits traffic information to central apparatus 201 at times t20, t21, t23, t24, and t26, respectively. . For example, the central device 201 transmits a traffic information request to the signal controller 101 every few minutes.

  Here, the target device 181 first transmits a logic low level state signal indicating the normal state to the signal controller 101. Next, the target device 181 transmits a logic high level state signal indicating an abnormal state to the signal controller 101 from time t22 to time t25. Next, after time t25, the target device 181 transmits a logic low level state signal indicating a normal state to the signal controller 101.

  In this case, the conversion signal output unit 17 in the signal controller 101 outputs a pulse signal as a conversion signal until time t22, and outputs a ground voltage signal as a conversion signal from time t22 to time t25. After time t25, the pulse signal is output. Is output as a conversion signal.

  Since the converted signal processing unit 18 in the signal controller 101 includes eight pulses in the converted signal in the period from time t20 to time t21, the count value “100” at time t20 is increased by 9 at time t21. The counted value “109” is output to the traffic information creation unit 14 as monitoring information. Next, since the converted signal includes three pulses in the converted signal in the period from time t21 to time t23, the converted signal processing unit 18 counts up from the count value “109” at time t21 by 3 at time t23. The value “112” is output to the traffic information creation unit 14 as monitoring information. Next, since the pulse is not included in the converted signal in the period from time t23 to time t24, the converted signal processing unit 18 uses “112”, which is the same as the count value at time t23, as the monitoring information at time t24. The information is output to the information creation unit 14. Next, since the converted signal includes eight pulses in the converted signal in the period from time t24 to time t26, the converted signal processing unit 18 counts up from the count value “112” at time t24 by 8 at time t26. The value “120” is output to the traffic information creation unit 14 as monitoring information.

  The determination unit 32 in the central device 201 determines that the target device 181 is in an abnormal state when, for example, the increment of the count value that is monitoring information from the signal controller 101 is equal to or less than a predetermined threshold value. In this example, the threshold is “3”.

  First, since the monitoring information from the signal controller 101 at the time t21 is the count value “109” and increases by 9 from the count value “100” at the time t20, the determination unit 32 determines that the target device 181 is in a normal state. It is determined that

  Next, since the monitoring information from the signal controller 101 at the time t23 is the count value “112” and the determination unit 32 has increased only 3 from the count value “109” at the time t21, the target device 181 Judged to be in an abnormal state.

  Next, since the monitoring information from the signal controller 101 at the time t24 is the count value “112” and has not increased from the count value “112” at the time t23, the determination unit 32 continues to detect the abnormality in the target device 181. Judge that it is in a state.

  Next, since the monitoring information from the signal controller 101 at the time t26 is the count value “120” and increases by 8 from the count value “112” at the time t24, the determination unit 32 determines that the target device 181 is normal. It is determined that the state has returned.

  The determination unit 32 may set the threshold value to “0” or may be configured not to use the threshold value. In this case, when the count value that is the monitoring information has not increased from the previous time, the determination unit 32 determines that the target device 181 is in an abnormal state, and the count value that is the monitoring information increases only by 1 from the previous time. In such a case, it is determined that the target device 181 is in a normal state.

  On the other hand, when the state signal from the target device 181 is unstable and the “normal” and “abnormal” are repeated in a short time by the configuration using the threshold value of “2” or more as described above, the central device 201 The monitoring result of the target device 181 can be stabilized.

  The logic of the status signal output from the target device 181 may be reversed. That is, the target device 181 may be configured to output a logic high level status signal during normal operation and to output a logic low level status signal during an abnormality.

  The logic of whether the conversion signal output unit 17 outputs a pulse signal or a fixed level signal as the conversion signal may be reversed. That is, the selector 42 in the conversion signal output unit 17 outputs a ground voltage signal as a conversion signal when the state signal received from the state signal reception unit 16 indicates a normal state, and the state signal received from the state signal reception unit 16. In the case where indicates an abnormal state, the pulse signal from the pulse signal generation unit 41 may be output as a conversion signal.

  In addition, although the pulse signal generation unit 41 in the conversion signal output unit 17 is configured to generate a periodic pulse signal, the present invention is not limited to this. The pulse signal generation unit 41 may be configured to generate an aperiodic pulse signal, that is, a pulse signal in which pulses are generated irregularly.

  However, with the configuration in which the pulse signal generation unit 41 outputs a periodic pulse signal, the determination unit 32 in the central apparatus 201 can easily perform determination using two or more threshold values as described above.

  Further, the generation interval of the pulses included in the pulse signal generated by the pulse signal generation unit 41 may be shorter than the interval at which the traffic information request is transmitted from the central device 201 to the signal controller 101.

  The converted signal output unit 17 is configured to output a fixed level signal as the converted signal, but is not limited thereto. For example, the conversion signal output unit 17 may be configured to output only a pulse signal as the conversion signal.

  The conversion signal output unit 17 may be capable of outputting a plurality of types of pulse signals having a plurality of periods as a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device 181.

  In this case, the determination unit 32 in the central device 201 determines the state of the target device 181 for the number of types of the period of the pulse signal according to the increment of the count value, which is monitoring information, every predetermined time. It becomes possible.

  In this case, the conversion signal output unit 17 may be configured to output a fixed level signal or may not be configured to output a fixed level signal.

  The traffic signal receiving unit 19 is not limited to a configuration that receives a traffic signal from the vehicle detector 111, and may be any configuration that receives a traffic signal such as a pulse signal indicating a state related to traffic from another device.

  In the signal controller according to the first embodiment of the present invention, the conversion signal processing unit 18 counts the number of pulses of the conversion signal received from the conversion signal output unit 17, and uses the count value of the pulse number as monitoring information. Although it was set as the structure output to the traffic information preparation part 14, it is not limited to this. The conversion signal processing unit 18 may be configured to count the pulse width of the conversion signal received from the conversion signal output unit 17, that is, the time during which the conversion signal is at a logic high level, for example.

  In such a configuration, the converted signal output unit 17 may be capable of outputting pulse signals having a plurality of types of pulse widths as a plurality of types of converted signals respectively corresponding to a plurality of states of the target device 181.

  In this case, the determination unit 32 in the central device 201 determines the state of the target device 181 for the number of types of the pulse width of the pulse signal according to the increment of the count value that is the monitoring information every predetermined time. It becomes possible to do.

  In this case, the conversion signal output unit 17 may be configured to output a fixed level signal or may not be configured to output a fixed level signal.

  In this case, the pulse signal generation unit 41 may be configured to generate a periodic pulse signal. If the width of the pulse per unit time for generating one pulse is constant, the aperiodic signal is not aperiodic. It may be configured to generate a typical pulse signal.

  Furthermore, the converted signal processing unit 18 is configured to output the two types of count values as described above, specifically, the total number of pulses and the pulse width of the converted signal to the traffic information generating unit 14 as monitoring information. Also good.

  In this case, for example, the traffic information creation unit 14 stores the above two types of count values in any two of the fields D1 to D8 in the frame having the format shown in FIG.

  That is, the converted signal output unit 17 outputs at least one of a pulse signal having a plurality of types and a pulse signal having a plurality of types of pulse widths as a plurality of types of converted signals respectively corresponding to a plurality of states of the target device 181. To do.

[Operation]
Next, the operation flow of each device in the traffic information transmission system according to the first embodiment of the present invention will be described.

  Each device in the traffic information transmission system 301 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following flowchart from a memory (not shown). Each of the programs of the plurality of apparatuses can be installed from the outside. The programs of the plurality of apparatuses are distributed while being stored in a recording medium.

  FIG. 11 is a flowchart defining the procedure of the monitoring information notification process by the signal controller according to the first embodiment of the present invention.

  Referring to FIG. 11, first, the state signal receiving unit 16 in the signal controller 101 receives a state signal from the target device 181 (step S1).

  Next, when the state signal indicates an abnormal state (YES in step S2), the conversion signal output unit 17 outputs a fixed level conversion signal (step S3).

  On the other hand, when the state signal indicates a normal state (NO in step S2), the conversion signal output unit 17 outputs a pulsed conversion signal (step S4).

  Next, the converted signal processing unit 18 counts the pulses of the converted signal output from the converted signal output unit 17 (step S5).

  Until the traffic information creation unit 14 receives a traffic information request from the central device 201, reception of a new state signal, output of the received conversion signal, and counting of the pulses of the output conversion signal are continued (in step S6). NO).

  Next, when the traffic information creation unit 14 receives a traffic information request from the central device 201 (YES in step S6), the traffic information creation unit 14 creates traffic information including monitoring information which is a pulse count value of the converted signal (step S7). .

  Next, the center side transmission part 13 transmits the traffic information containing the monitoring information created by the traffic information creation part 14 to the central apparatus 201 (step S8).

  FIG. 12 is a flowchart that defines the procedure of the monitoring process of the target device by the central device according to the first embodiment of the present invention.

  Referring to FIG. 12, first, the traffic information processing unit 22 transmits a traffic information request to the signal controller 101 (step S11).

  Next, the receiving unit 21 receives a frame including traffic information from the signal controller 101 (step S12).

  Next, the traffic information processing unit 22 acquires traffic information from the received frame (step S13).

  Next, when the function for acquiring the monitoring information included in the traffic information is set to “off”, the traffic information processing unit 22 ends the process related to the monitoring of the target device 181 (NO in step S14).

  On the other hand, when the function for acquiring the monitoring information included in the traffic information is set to “ON”, the traffic information processing unit 22 acquires the monitoring information from the traffic information (step S15).

  Next, the traffic information processing unit 22 determines the state of the target device 181 based on the increment of the count result indicated by the acquired monitoring information (step S16).

  Next, when it is determined that the state of the target device 181 is an abnormal state (YES in step S17), the notification unit 33 notifies the user of the content of the determination (step S18).

  On the other hand, when the notification unit 33 determines that the state of the target device 181 is not an abnormal state (NO in step S17), the notification unit 33 ends the process related to monitoring of the target device 181.

  By the way, in a traffic control system, as a function of a device that transmits traffic information collected at a certain point to a central device, a function of collecting the status of peripheral devices and notifying the central device is conceivable. In such a device, a technique capable of notifying the central device of the state of the peripheral device with a simple configuration is desired.

  On the other hand, in the traffic information transmission device according to the first embodiment of the present invention, the state signal receiving unit 16 receives a state signal indicating the state of the target device 181. The conversion signal output unit 17 outputs a conversion signal corresponding to the state of the target device 181 indicated by the state signal received by the state signal receiving unit 16 among a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device 181. Output. At least one of the plurality of types of converted signals is a pulse signal. The conversion signal processing unit 18 counts the pulses of the conversion signal output from the conversion signal output unit 17. Then, the traffic information creation unit 14 notifies the central device 201 of the count result obtained by the conversion signal processing unit 18.

  With such a configuration, the central device 201 indicates the state of the target device 181 with a simple configuration using the count result of the converted signal pulses without increasing the transmission capacity from the signal controller 101 to the central device 201. The count result can be acquired, and for example, the current state of the target device 181 can be grasped well.

  Therefore, in the traffic information transmission device according to the first embodiment of the present invention, information regarding the state of the target device can be transmitted with a simple configuration.

  Moreover, in the traffic information transmission apparatus according to the first embodiment of the present invention, the traffic signal receiving unit 19 receives a pulsed traffic signal indicating a state related to traffic. The traffic signal processing unit 15 counts the traffic signal pulses received by the traffic signal receiving unit 19. The traffic information creation unit 14 further notifies the central device 201 of the count result by the traffic signal processing unit 15. Then, the traffic information creation unit 14 transmits data in a format having a plurality of fields each capable of storing count results corresponding to a plurality of traffic signals to the central device 201, and at least one of the plurality of fields is transmitted. One count result corresponding to the converted signal is stored.

  With such a configuration, it is possible to notify the state of the target device 181 using the existing configuration and communication processing for transmitting traffic information. In other words, information relating to the state of the target device 181 can be transmitted with a simple configuration, together with traffic information, without causing a significant change such as changing an existing communication standard or changing the device configuration significantly. .

  Moreover, in the traffic information transmission apparatus according to the first embodiment of the present invention, at least any two of the plurality of types of converted signals are a pulse signal and a fixed level signal.

  With such a configuration, for example, a plurality of types of conversion signals can be generated with a simple configuration without using a circuit that generates a plurality of types of pulse signals.

  In the traffic information transmission device according to the first embodiment of the present invention, at least one of the plurality of states is an abnormal state. The conversion signal output unit 17 outputs a fixed level signal as a conversion signal corresponding to the abnormal state.

  With such a configuration, even when a pulse signal cannot be generated due to some trouble in the signal controller 101 or the like, the possibility that an abnormal state can be detected in the central device 201 can be increased.

  Moreover, in the traffic information transmission apparatus according to the first embodiment of the present invention, the converted signal output unit 17 can output a pulse signal in which pulses are periodically generated.

  With such a configuration, when the increment of the count value of the pulse of the conversion signal is unstable in the central device 201, it is possible to determine the normal state or the abnormal state using the threshold value. Even when the status signal is unstable, the monitoring result of the target device 181 in the central device 201 can be stabilized.

  Moreover, in the traffic information transmission device according to the first embodiment of the present invention, the converted signal output unit 17 uses a plurality of types of periodic pulses as a plurality of types of converted signals respectively corresponding to a plurality of states of the target device 181. A signal can be output.

  With such a configuration, the central device 201 determines the state of the target device 181 for the number of types of the period of the pulse signal according to the increment of the count value of the pulse of the conversion signal every predetermined time. It becomes possible.

  Moreover, in the traffic information transmission device according to the first embodiment of the present invention, the converted signal output unit 17 has a plurality of types of pulse widths as a plurality of types of converted signals respectively corresponding to a plurality of states of the target device 181. A pulse signal can be output.

  With such a configuration, the central device 201 determines the state of the target device 181 for the number of types of the pulse width of the pulse signal according to the increment of the count value of the pulse of the conversion signal every predetermined time. It becomes possible to do.

  Further, in the central device according to the first embodiment of the present invention, the receiving unit 21 is a pulse count result of a pulse-shaped traffic signal indicating a state related to traffic, and the count result corresponding to a plurality of traffic signals Are received from the signal controller 101 as traffic information. The monitoring information acquisition unit 31 in the traffic information processing unit 22 receives the data received by the reception unit 21 on the assumption that the count result of the converted signal pulse is stored in at least one of the plurality of fields. From this, it is possible to obtain the count result of the converted signal pulse.

  With such a configuration, the central device 201 indicates the state of the target device 181 with a simple configuration using the count result of the converted signal pulses without increasing the transmission capacity from the signal controller 101 to the central device 201. The count result can be acquired.

  Therefore, the central device according to the first embodiment of the present invention can transmit information related to the state of the target device with a simple configuration.

  In the central device according to the first embodiment of the present invention, the determination unit 32 changes the state of the target device 181 based on the change in the count result of the converted signal pulse acquired by the monitoring information acquisition unit 31. to decide.

  With such a configuration, the current state of the target device 181 can be well understood based on the count result acquired from the signal controller 101.

  Further, in the traffic information transmission system according to the first embodiment of the present invention, the signal controller 101 is a pulse count result of a pulsed traffic signal indicating a traffic-related state, and corresponds to a plurality of traffic signals. The data of the format having a plurality of fields each capable of storing the count result is transmitted to the central apparatus 201 as traffic information. The signal controller 101 can generate a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device 181, and at least one of the plurality of types of conversion signals is a pulse signal. The signal controller 101 stores the pulse count result of the converted signal in at least one of the plurality of fields. Then, the central apparatus 201 receives traffic information from the signal controller 101, and obtains the count result of the converted signal pulse from the field in the data that is the received traffic information.

  With such a configuration, the central device 201 indicates the state of the target device 181 with a simple configuration using the count result of the converted signal pulses without increasing the transmission capacity from the signal controller 101 to the central device 201. The count result can be acquired, and for example, the current state of the target device 181 can be grasped well.

  Therefore, in the traffic information transmission system according to the first embodiment of the present invention, information regarding the state of the target device can be transmitted with a simple configuration.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Second Embodiment>
The present embodiment relates to a traffic information transmission system in which a vehicle sensor operates as a traffic information transmission device instead of a signal controller as compared with the traffic information transmission system according to the first embodiment. The contents other than those described below are the same as those in the traffic information transmission system according to the first embodiment.

  FIG. 13 is a diagram showing a configuration of a traffic information transmission system according to the second embodiment of the present invention.

  Referring to FIG. 13, traffic information transmission system 302 includes a central device 201 and a vehicle sensor 112.

  In FIG. 13, as an example, a state where one vehicle sensor 112 is connected to the central device 201 is shown, but a plurality of vehicle detectors 112 and one or a plurality of signal controllers 101 are connected to the central device 201. It may be configured.

  The vehicle sensor 112 can communicate with the central apparatus 201 via a dedicated or general communication line. The vehicle detector 112 detects the presence of the vehicle and transmits a detection signal indicating the detection result to the central device 201. The sensing signal is, for example, a pulse-like signal indicating the presence or absence of the vehicle every predetermined time in the sensing area.

  The target device 181 is a peripheral device of the vehicle sensor 112 and is, for example, a UPS that supplies power to the vehicle sensor 112. The target device 181 may be a device built in the vehicle sensor 112.

  The target device 181 transmits a state signal indicating its own state to the vehicle detector 112. Specifically, when the target device 181 is a UPS, for example, when it detects that the power supply from the power system side has stopped and supplies power to the vehicle detector 112, the target device 181 indicates an abnormal state. A status signal is transmitted to the vehicle sensor 112. Alternatively, for example, when the target device 181 detects its own abnormality, the target device 181 transmits a state signal indicating the abnormal state to the vehicle detector 112.

  FIG. 14 is a diagram showing a configuration of a vehicle detector in the traffic information transmission system according to the second embodiment of the present invention.

  Referring to FIG. 14, vehicle sensor 112 further includes a sensing unit 20 as compared with the signal controller in the traffic information transmission system according to the first embodiment of the present invention, and includes signal control unit 12 and The traffic signal receiving unit 19 is not provided.

  The sensing unit 20 outputs, for example, a sensing signal similar to the vehicle sensor 111 in the traffic information transmission system according to the first embodiment of the present invention to the traffic signal processing unit 15.

  The traffic signal processing unit 15 counts the traffic signal pulses received from the sensing unit 20 and outputs the count value and the pulse width to the traffic information creation unit 14 as a count result.

  In the traffic information transmission apparatus according to the second embodiment of the present invention, the state signal receiving unit 16 indicates the state of the target apparatus 181 as in the traffic information transmission apparatus according to the first embodiment of the present invention. Receive a status signal. The conversion signal output unit 17 outputs a conversion signal corresponding to the state of the target device 181 indicated by the state signal received by the state signal receiving unit 16 among a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device 181. Output. At least one of the plurality of types of converted signals is a pulse signal. The conversion signal processing unit 18 counts the pulses of the conversion signal output from the conversion signal output unit 17. Then, the traffic information creation unit 14 notifies the central device 201 of the count result obtained by the conversion signal processing unit 18.

  With such a configuration, the central device 201 indicates the state of the target device 181 with a simple configuration using the count result of the converted signal pulses without increasing the transmission capacity from the vehicle sensor 112 to the central device 201. The count result can be acquired, and for example, the current state of the target device 181 can be grasped well.

  Therefore, in the traffic information transmission apparatus according to the second embodiment of the present invention, the information on the state of the target apparatus is transmitted with a simple configuration, similarly to the traffic information transmission apparatus according to the first embodiment of the present invention. can do.

  Further, in the central device according to the second embodiment of the present invention, similarly to the central device according to the first embodiment of the present invention, the receiving unit 21 receives a pulse-shaped traffic signal indicating a traffic-related state. Data of a format having a plurality of fields, each of which is a pulse count result and can store count results corresponding to a plurality of traffic signals, is received from the vehicle sensor 112 as traffic information. The monitoring information acquisition unit 31 in the traffic information processing unit 22 receives the data received by the reception unit 21 on the assumption that the count result of the converted signal pulse is stored in at least one of the plurality of fields. From this, it is possible to obtain the count result of the converted signal pulse.

  With such a configuration, the central device 201 indicates the state of the target device 181 with a simple configuration using the count result of the converted signal pulses without increasing the transmission capacity from the vehicle sensor 112 to the central device 201. The count result can be acquired.

  Therefore, the central apparatus according to the second embodiment of the present invention can transmit information related to the state of the target apparatus with a simple configuration, similar to the central apparatus according to the first embodiment of the present invention. .

  Further, in the traffic information transmission system according to the second embodiment of the present invention, as in the traffic information transmission system according to the first embodiment of the present invention, the vehicle detector 112 has a pulse indicating a state related to traffic. The data of a format having a plurality of fields that can respectively store the count results corresponding to a plurality of traffic signals is transmitted to the central apparatus 201 as traffic information. The vehicle sensor 112 can generate a plurality of types of conversion signals respectively corresponding to a plurality of states of the target device 181, and at least one of the plurality of types of conversion signals is a pulse signal. The vehicle sensor 112 stores the count result of the converted signal pulse in at least one of the plurality of fields. Then, the central apparatus 201 receives traffic information from the vehicle detector 112, and obtains the count result of the converted signal pulse from the field in the data that is the received traffic information.

  With such a configuration, the central device 201 indicates the state of the target device 181 with a simple configuration using the count result of the converted signal pulses without increasing the transmission capacity from the vehicle sensor 112 to the central device 201. The count result can be acquired, and for example, the current state of the target device 181 can be grasped well.

  Therefore, in the traffic information transmission system according to the second embodiment of the present invention, as with the traffic information transmission system according to the first embodiment of the present invention, information related to the state of the target device is transmitted with a simple configuration. can do.

  Since other configurations and operations are the same as those of the traffic information transmission system according to the first embodiment, detailed description thereof will not be repeated here.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The above description includes the following features.

[Appendix 1]
A traffic information transmission device that transmits traffic information to a central device,
A status signal receiver that receives a status signal indicating the status of the target device;
Out of a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, a converted signal output that outputs the converted signal corresponding to the state of the target device indicated by the state signal received by the state signal receiving unit With
At least one of the plurality of types of conversion signals is a pulse signal,
further,
A converted signal processing unit that counts pulses of the converted signal output from the converted signal output unit;
A traffic information creating unit for notifying the central device of the count result by the converted signal processing unit,
The traffic information transmission device further includes:
A traffic signal receiving unit for receiving a pulsed traffic signal indicating a state related to traffic;
A traffic signal processing unit for counting pulses of the traffic signal received by the traffic signal receiving unit;
The traffic information creation unit further notifies the central device of the count result by the traffic signal processing unit,
The traffic information creation unit transmits data of a format having a plurality of fields each capable of storing the count results corresponding to a plurality of traffic signals to the central device, and at least one of the plurality of fields Storing the count result corresponding to the converted signal in one;
The traffic signal is a pulse signal indicating whether or not a vehicle is detected,
The target device is a traffic information transmission device, which is a UPS that supplies power to the traffic information transmission device.

[Appendix 2]
A central device for obtaining traffic information from a traffic information transmission device,
The traffic information is a pulse count result of a pulse-shaped traffic signal indicating a state relating to traffic, and the traffic information is data in a format having a plurality of fields each capable of storing count results corresponding to the traffic signals. A receiving unit for receiving from the transmission device;
The traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals is a pulse signal,
further,
Assuming that the pulse count result of the converted signal is stored in at least one of the plurality of fields, the pulse count result of the converted signal can be acquired from the data received by the receiving unit. With an acquisition unit,
The traffic signal is a pulse signal indicating whether or not a vehicle is detected,
The target device is a central device that is a UPS that supplies power to the traffic information transmission device.

[Appendix 3]
A traffic information transmission device for transmitting traffic information;
A central device for receiving the traffic information,
The traffic information transmission device is a pulse count result of a pulse-shaped traffic signal indicating a state relating to traffic, and data in a format having a plurality of fields each capable of storing a count result corresponding to the plurality of traffic signals. Send to the central device as the traffic information,
The traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals is a pulse signal,
The traffic information transmission device stores a pulse count result of the converted signal in at least one of the plurality of fields,
The central device receives the traffic information from the traffic information transmission device, obtains the count result of the pulse of the converted signal from the field in the data that is the received traffic information,
The traffic signal is a pulse signal indicating whether or not a vehicle is detected,
The traffic information transmission system, wherein the target device is a UPS that supplies power to the traffic information transmission device.

DESCRIPTION OF SYMBOLS 11 Central side reception part 12 Signal control part 13 Central side transmission part 14 Traffic information preparation part 15 Traffic signal processing part 16 State signal reception part 17 Conversion signal output part 18 Conversion signal processing part 19 Traffic signal reception part 20 Sensing part 21 Reception part DESCRIPTION OF SYMBOLS 22 Traffic information processing part 23 Signal control command preparation part 24 Transmission part 25 Memory | storage part 41 Pulse signal generation part 42 Selector 101 Signal controller 111 Vehicle detector 161 Signal lamp 201 Central apparatus 301 Traffic information transmission system

Claims (12)

A traffic information transmission device that transmits traffic information to a central device,
A status signal receiver that receives a status signal indicating the status of the target device;
Out of a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, a converted signal output that outputs the converted signal corresponding to the state of the target device indicated by the state signal received by the state signal receiving unit With
At least one of the plurality of types of conversion signals is a pulse signal,
further,
A converted signal processing unit that counts pulses of the converted signal output from the converted signal output unit;
A traffic information transmission device comprising: a traffic information creation unit that notifies the central device of a count result obtained by the converted signal processing unit. The traffic information transmission device further includes:
A traffic signal receiving unit for receiving a pulsed traffic signal indicating a state related to traffic;
A traffic signal processing unit for counting pulses of the traffic signal received by the traffic signal receiving unit;
The traffic information creation unit further notifies the central device of the count result by the traffic signal processing unit,
The traffic information creation unit transmits data of a format having a plurality of fields each capable of storing the count results corresponding to a plurality of traffic signals to the central device, and at least one of the plurality of fields The traffic information transmission device according to claim 1, wherein the count result corresponding to the converted signal is stored in one.   The traffic information transmission device according to claim 1 or 2, wherein at least any two of the plurality of types of converted signals are a pulse signal and a fixed level signal. At least one of the plurality of states is an abnormal state;
The traffic information transmission device according to claim 3, wherein the conversion signal output unit outputs a signal of a fixed level as the conversion signal corresponding to the abnormal state.   5. The traffic information transmission device according to claim 1, wherein the conversion signal output unit is capable of outputting the pulse signal in which pulses are periodically generated.   The traffic information transmission device according to claim 5, wherein the converted signal output unit can output a plurality of types of pulse signals as a plurality of types of converted signals respectively corresponding to a plurality of states of the target device.   7. The conversion signal output unit according to claim 1, wherein the conversion signal output unit can output pulse signals having a plurality of types of pulse widths as the plurality of types of conversion signals respectively corresponding to a plurality of states of the target device. The traffic information transmission apparatus according to item 1. A central device for obtaining traffic information from a traffic information transmission device,
The traffic information is a pulse count result of a pulse-shaped traffic signal indicating a state relating to traffic, and the traffic information is data in a format having a plurality of fields each capable of storing count results corresponding to the traffic signals. A receiving unit for receiving from the transmission device;
The traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals is a pulse signal,
further,
Assuming that the pulse count result of the converted signal is stored in at least one of the plurality of fields, the pulse count result of the converted signal can be acquired from the data received by the receiving unit. A central device comprising an acquisition unit. The central device further comprises:
The central device according to claim 8, further comprising a determination unit that determines a state of the target device based on a change in the count result acquired by the acquisition unit. A traffic information transmission device for transmitting traffic information;
A central device for receiving the traffic information,
The traffic information transmission device is a pulse count result of a pulse-shaped traffic signal indicating a state relating to traffic, and data in a format having a plurality of fields each capable of storing a count result corresponding to the plurality of traffic signals. Send to the central device as the traffic information,
The traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals is a pulse signal,
The traffic information transmission device stores a pulse count result of the converted signal in at least one of the plurality of fields,
The said central apparatus receives the said traffic information from the said traffic information transmission apparatus, The traffic information transmission system which acquires the count result of the pulse of the said conversion signal from the said field in the said data which is the received said traffic information. A traffic information transmission program used in a traffic information transmission device for transmitting traffic information to a central device,
Receiving a status signal indicating the status of the target device;
A program for executing a step of outputting the converted signal corresponding to the state of the target device indicated by the received state signal among a plurality of types of converted signals respectively corresponding to the plurality of states of the target device. ,
At least one of the plurality of types of conversion signals is a pulse signal,
further,
Counting the pulses of the output converted signal;
A traffic information transmission program for executing a step of notifying the central unit of a count result. A traffic information transmission program used in a central device for acquiring traffic information from a traffic information transmission device,
The traffic information is a pulse count result of a pulse-shaped traffic signal indicating a state relating to traffic, and the traffic information is data in a format having a plurality of fields each capable of storing count results corresponding to the traffic signals. Receiving from the transmission device;
The traffic information transmission device can generate a plurality of types of converted signals respectively corresponding to a plurality of states of the target device, and at least one of the plurality of types of converted signals is a pulse signal,
further,
In order to execute the step of acquiring the count result of the pulse of the conversion signal from the received data, assuming that the count result of the pulse of the conversion signal is stored in at least one of the plurality of fields The traffic information transmission program.

Images