JP4423360B2 - Signal processing method and signal processing system for moving body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a signal processing method and a signal processing system for a moving body. More specifically, it is possible to reduce the size of wiring that connects various electric devices of mobile objects such as automobiles and airplanes, and even if the wiring and parts of the equipment are damaged, it is possible to communicate at other locations. The present invention relates to a signal processing method and a signal processing system.
[0002]
[Prior art]
In recent years, the movement of vehicles and aircrafts, especially passenger cars, has become more and more electrically powered. For example, the angle adjustment of various mirrors, the position adjustment of the seat, the angle adjustment, and the like, such as opening and closing of the window, are becoming electric. In addition, sensors for electrically detecting the state of various equipment such as a door sensor for checking whether the door is completely closed and a seat belt sensor for detecting the wearing state of the seat belt are often provided. ing.
[0003]
In this way, with the advancement of the electrical equipment of various equipment in the moving body, the wiring for control signals for controlling them and the electrical wiring for supplying power to them become enormous, Securing space has become a problem.
[0004]
In recent years, for example, in compensation for damages caused by passengers using aircraft, not only the responsibility of the service provider, but also the safety management responsibility of the passenger receiving the service (whether the seat belt was worn as prescribed, etc. ) Is also becoming a problem.
[0005]
Against this backdrop, drivers and users are expected to be able to realize reasonable damages that take into account user responsibilities even in the case of damages caused by the use of passenger cars, route buses, aircraft, etc. The necessity of a recording system for recording various data, which serves as data for inferring behavior, has been recognized. Therefore, since it is necessary to systematically study and elucidate the mechanism of various accident occurrences, it is desirable to install a recording system for recording such various data in passenger cars, aircrafts, and the like.
[0006]
However, due to the increase in wiring due to the electrical installation of equipment, it is difficult to further increase the wiring to provide such a recording system. Moreover, it is essential for the recording system as described above to continue the recording operation by continuing the communication in the other part even when a failure such as disconnection or equipment damage occurs. It is.
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the problems of the prior art, and can reduce the wiring for connecting various electrical devices mounted on the mobile body, and some failures such as disconnection and damage to the devices are partly achieved. It is an object of the present invention to provide a signal processing method and a signal processing system for a mobile body that can maintain communication in other parts even when the error occurs.
[0008]
[Means for Solving the Problems]
The signal processing method for a mobile body of the present invention is a signal processing method with high destruction resistance in a mobile body that processes signals from various electrical equipment mounted on the mobile body,
Recording means for recording the output signals of the respective electrical devices provided in the front part of the moving body in a time series, and the output signals of the electrical devices provided in the right part of the same mobile body in a time series. Recording means, recording means for recording the output signals of each electrical equipment provided at the rear of the same mobile body in time series, and output signals of each electrical equipment provided at the left side of the same mobile body Recording means for recording in time series,
The recording means is stopped when the impact detection sensor of the moving body detects an impact of a predetermined value or more, and holds the recorded content up to that time,
Each repeater connected to each electrical equipment has a token control unit,
The token control unit adds information indicating a priority order unique to the repeater and transmits a token signal at a predetermined period.
[0009]
In the mobile signal processing method of the present invention, it is preferable that the repeater that has transmitted the token signal first from the time when the power source of the mobile body is turned on functions as a master node. In this case, it is more preferable that the master node is selected based on information indicating the priority order added to each token signal .
[0010]
Further, in the signal processing method for a moving body of the present invention, it is preferable that the recording means is activated in a state where the power of the moving body is turned on .
[0011]
Furthermore, in the mobile signal processing method of the present invention, recording by the recording means is performed by, for example, a fast-in / fast-out method.
[0012]
On the other hand, the signal processing system for a moving body of the present invention is a signal processing system having high destruction resistance in a moving body that processes signals from various electrical devices mounted on the moving body,
Recording means for recording the output signals of the respective electrical devices provided in the front part of the moving body in a time series, and the output signals of the electrical devices provided in the right part of the same mobile body in a time series. Recording means, recording means for recording the output signals of each electrical equipment provided at the rear of the same mobile body in time series, and output signals of each electrical equipment provided at the left side of the same mobile body Recording means for recording in time series,
The recording means is stopped when the impact detection sensor of the moving body detects an impact of a predetermined value or more, and holds the recorded content up to that time,
Each repeater connected to each electrical equipment has a token control unit,
The token control unit is configured to add information indicating priority specific to the repeater and transmit a token signal at a predetermined period.
[0013]
In the mobile signal processing system of the present invention, it is preferable that the repeater that has transmitted the token signal first functions as a master node from the time when the power of the mobile is turned on . In this case, it is more preferable that the master node is selected based on information indicating the priority order added to each token signal .
[0014]
In the mobile signal processing system of the present invention, it is preferable that the recording means is activated in a state where the power of the mobile body is turned on .
[0015]
Furthermore, in the mobile signal processing system of the present invention, the recording by the recording means is performed by, for example, a fast-in / fast-out method.
[0016]
Here, the moving body is, for example, an automobile, a railway vehicle, an aircraft, or a ship.
[0017]
[Action]
Since the present invention is configured as described above, for example, a large number of electrical devices can be sequentially connected by a single twisted pair, and signals from each electrical device can be transmitted sequentially. For this reason, wiring of moving bodies, such as a car, can be made compact.
[0018]
Further, in a preferred embodiment of the present invention, even when a failure such as disconnection occurs in the wiring connecting each electrical equipment and recording device to the series, communication between each electrical equipment that maintains the connection state is continued. And the effects of failure can be kept to a minimum.
[0019]
Furthermore, in another preferred embodiment of the present invention, by providing a plurality of recording means in a distributed arrangement, even if a failure such as disconnection occurs, the output signal of each sensor is continued with any of the recording means. It can be recorded in a highly resistant to fracture.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, although the present invention is explained based on an embodiment, referring to an accompanying drawing, the present invention is not limited only to this embodiment. In the following embodiments, the moving body is an automobile.
[0021]
Embodiment 1
FIG. 1 shows a mobile signal processing system (hereinafter simply referred to as a signal processing system) to which the mobile signal processing method according to Embodiment 1 of the present invention is applied.
[0022]
The signal processing system A is a system for recording the output signals of the sensors S for detecting the state of various equipment and electrical equipment of, for example, a four-door passenger car B (hereinafter simply referred to as a vehicle) in a time series. It is said. Here, the vehicle B includes a driver seat TD and a passenger seat TA as front seats, a left rear seat TL, and a right rear seat TR.
[0023]
Each sensor S provided in the vehicle B is provided for each door (not shown) of the vehicle B, and detects door sensors S _{D1 to} S _D4 that detect whether or not each door is completely closed. Window sensors S _{W1 to} S _W4 provided for each window (not shown) for detecting whether each window is completely closed, and seat belts (not shown) for each seat TD, TA, TL, TR Seat belt sensors S _{B1 to} S _B4 provided for each seat belt to detect whether or not each seat belt is normally used, and a total of four turn signals (right and left of the front of the vehicle B and left and right of the rear) Whether the winker sensors S _{N1 to} S _N4 provided for each (not shown) and detecting whether or not each winker is operating, and whether the wiper (not shown) of the vehicle B is operating composed of the detection to Waipasensa S _Y.
[0024]
The signal processing system A records the output signals of the sensors S provided in a distributed manner in the front part B ₁ , the right part B ₂ , the rear part B ₃ and the left part B ₄ of the vehicle B in time series. A plurality of recording units 10, a bus 20 that connects each sensor S and recording unit 10 in series, and a display device 30 that is connected to the bus 20 and performs display based on the output signal of each sensor S. It is supposed to be.
[0025]
The recording unit 10 includes a memory such as an endless tape, a hard disk, and a semiconductor memory. The recording unit 10 is activated in a state where the power of the vehicle B is turned on by an engine key, for example. ) Is recorded in a fast-in / fast-out manner.
[0026]
The recording operation of the recording unit 10 is not changed in the vehicle B, such as when an impact detection sensor (not shown) of the vehicle B detects an impact of a predetermined value or more, or the power is turned off regardless of a regular process. The recording unit 10 is stopped when it occurs, and the recording unit 10 holds the recorded contents up to that point. Thereby, the output signal of each sensor S from a predetermined time before the occurrence of the accident is recorded in each recording unit 10 in time series.
[0027]
The bus 20 is composed of, for example, a twisted pair, and in order to directly connect each recording unit 10 and each sensor S, a plurality of repeaters H provided corresponding to each recording unit 10 and each sensor S are connected in series. It is supposed to be.
[0028]
The display device 30 is provided in the driver's seat TD of the vehicle B, and displays the state of each equipment and each electrical device of the vehicle B detected by each sensor S.
[0029]
FIG. 2 shows details of the repeater. The repeater H has the same configuration as the repeater (node) disclosed in JP-A-8-88641 and operates in the same manner.
[0030]
Each repeater H is connected to a corresponding sensor S and inputs an output signal of the sensor S. The repeater H is connected to a corresponding recording unit 10 or display device 30 and connected to another repeater H via the bus 20. The output signal of each sensor S transmitted from the output unit 52 for outputting to the recording unit 10 or the display device 30 and the address indicating the own station in the signal processing system A of each repeater H are set. A station address setting unit 53, a transmission source address setting unit 54 in which an address indicating another repeater H as a transmission source of a signal to be output via the output unit 52 is set, and the input inputted by the input unit 51 A data transmission unit 55 that transmits the output signal of the sensor S to the bus 20 at a predetermined timing, and a token signal transmitted via the bus 20 is decoded, and signal transmission by the data transmission unit 55 is performed. Token decoding / data reception instructing imming and selecting and receiving a signal to be output to the recording unit 10 or the display device 30 via the output unit 52 with reference to the address set in the transmission source address setting unit 54 Token that sends the token signal to the bus 20 according to the situation by monitoring the token signal sent via the bus 20 while referring to the address of the own station set in the unit 56 and the own station address setting unit 53 And a control unit 57.
[0031]
FIG. 3 shows details of the token control unit 57.
[0032]
The token control unit 57 refers to the token transmission unit 61 that transmits a token signal at a predetermined cycle, and the address of the repeater H set in the local station address setting unit 53 in the token signal transmitted by the token transmission unit 61. A priority adding unit 62 for adding information indicating a unique priority (assignment of priority to each repeater H is arbitrary, but no overlapping of the ranks is allowed); Token receiving unit 63 that receives the token signal from the repeater H of the receiver, information indicating the priority added to the token signal input by the token receiving unit 63, and the priority of the own station added by the priority adding unit 62 The token transmitted by the token transmission unit 61 when a token signal having a priority higher than the priority of the local station is not received by comparing with the information indicating the priority. A priority determination unit 65 that outputs a permission signal 64 that permits transmission of a signal to the bus 20, and when the permission signal 64 and the token signal from the token transmission unit 61 are input simultaneously, the token signal is transmitted to the bus 20. And an AND circuit 66.
[0033]
Thus, the signal processing system A configured as described above includes the repeater H that first sends the token signal from the token receiving unit 63 to the bus 20 from the time when the power of the vehicle B is turned on by the rotation of the engine key. It functions as a master node that transmits a token signal for designating the signal transmission timing of all the repeaters H. When there are a plurality of repeaters H that have started to transmit a token signal at the same time, the relay node H having the highest priority is set as the master node.
[0034]
In addition, in the transmission source address setting unit 54 of the relay H in which each recording unit 10 and the display device 30 are connected to the output unit 52, the addresses of all the relays H to which the sensors S are connected are set. Is done.
[0035]
Thus, if there is no failure such as disconnection in the bus 20, while the output signals of all the sensor S is recorded in the recording unit 10, for example, disconnection occurs at a point P ₁ and point P ₂ on the bus 20 When the signal from the master node is interrupted, any one of the repeaters H included in the parts B ₁ and B ₄ is controlled by the token control unit 57 in the front part B ₁ and the left part B ₄ of the vehicle B. automatically initiates the function as the master node, that starts the automatic arbitration function, the output signals of the sensors S at respective portions B _1, B ₄ is recorded in the recording unit 10 in each unit B _1, B ₄ The
[0036]
In addition, in the right side B ₂ and the rear B ₃ of the vehicle B, any one of the repeaters H included in the respective parts B ₂ and B ₃ automatically starts functioning as a master node under the control of the token control unit 57. as well as the output signals of the sensors S at respective portions B _2, B ₃ is recorded on the recording unit 10 in each unit B _2, B _3.
[0037]
As described above, the signal processing system A according to the first embodiment uses the plurality of relays H connected to the series to detect the states of the various electrical devices of the vehicle B and the output signals of the sensors S in time series. Since the recording unit 10 for recording is connected, all the sensors S and the recording unit 10 can be connected by a single twisted pair, and the wiring can be made compact.
[0038]
In addition, since each repeater H has an auto arbitration function and high communication sustainability, and a plurality of recording units 10 are provided in a distributed manner in each part of the vehicle B, some disconnections or malfunctions of equipment or the like are partially caused. Even when the error occurs, the recording of the output signal of each sensor S in any one of the recording units 10 can be continued. In other words, this system is highly resistant to destruction.
[0039]
Embodiment 2
FIG. 4 shows a schematic configuration of a signal processing system according to the second embodiment of the present invention.
[0040]
The signal processing system A1 is applied to, for example, a control signal processing system that performs temperature control and the like in the refrigerators F ₁ and F ₂ of the vehicle FB for cold transport.
[0041]
That is, in the signal processing system A1, the repeater H having the same configuration as in the first embodiment is connected in series by a bus 20A made of, for example, a twisted pair, and the doors of the refrigerators F ₁ and F ₂ are connected by the repeaters H. door sensor S _D1A to detect whether (a not shown) is closed, S _D2A, the temperature sensor S _T1, S _T2 for detecting the temperature in each refrigerator F _1, F _2, each refrigerator F _1, F ₂ humidity sensor S _F1 for detecting the humidity of the inner, S _F2, the illumination L _1, L ₂ of the refrigerator F _1, F _2, the temperature control monitoring device 70 for controlling the compressor C _1, C _2, and the respective parts, respectively It shall be connected.
[0042]
Each sensor S is connected to the input section 51 of the repeater H, and the lights L ₁ and L ₂ and the compressors C ₁ and C ₂ are connected to the output section 52 of the repeater H. In the transmission source address setting unit 54 of each repeater H connecting the lights L ₁ and L ₂ and the compressors C ₁ and C ₂ , an address indicating the repeater H connecting the temperature control monitoring device 70 is set.
[0043]
The temperature control monitoring device 70 includes a control unit 71 that controls the compressors C ₁ and C ₂ in accordance with output signals from the temperature sensors S _T1 and S _T2 and the humidity sensors S _F1 and S _F2 , a target warehouse temperature setting, and an illumination L ₁ and L ₂ , and an operation unit 72 that turns on and off, and a display unit 73 that displays various information such as internal temperature / humidity, door open / close state, lighting on / off, and set target cabinet temperature. Is done.
[0044]
The control unit 71 is connected to both the input unit 51 and the output unit 52 of the repeater H, and inputs the output signals of the temperature sensors S _T1 and S _T2 and the humidity sensors S _F1 and S _F2 via the input unit 51. A control signal for controlling the compressors C ₁ and C ₂ and a signal for instructing on / off of the lights L ₁ and L ₂ are output via the output unit 52.
[0045]
In the transmission source address setting unit 54 of the relay H connecting the temperature control monitoring device 70, an address indicating the relay H connecting the lights L ₁ and L ₂ and the compressors C ₁ and C ₂ is set.
[0046]
Thus, in the signal processing system A1 having such a configuration, wiring of a control system that performs temperature control and the like in the refrigerators F ₁ and F ₂ of the cold transport vehicle FB is connected by, for example, a single twisted pair bus 20A. Therefore, the wiring of the automobile FB can be made extremely compact.
[0047]
As mentioned above, although this invention has been demonstrated based on embodiment, this invention is not limited only to this embodiment, A various change is possible. For example, although the moving body is an automobile in the embodiment, the moving body to which the present invention can be applied is not limited to an automobile, and may be a rail car, or may be an aircraft or a ship.
[0048]
【The invention's effect】
As described above in detail, since the present invention is configured as described above, for example, a large number of electrical devices can be sequentially connected by a single twisted pair, and signals from each electrical device can be transmitted sequentially. Summarizing the excellent effect that the wiring of a moving body such as an automobile can be made compact.
[0049]
Further, in a preferred embodiment of the present invention, even when a failure such as disconnection occurs in the wiring connecting each electrical equipment and recording device to the series, communication between each electrical equipment that maintains the connection state is continued. It is possible to achieve the excellent effect of minimizing the influence of failure.
[0050]
Furthermore, in another preferred embodiment of the present invention, by providing a plurality of recording means in a distributed arrangement, even if a failure such as disconnection occurs, the output signal of each sensor is continued with any of the recording means. Therefore, there is an excellent effect that the fracture resistance is high.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a schematic configuration of a signal processing system according to a first embodiment of the present invention.
FIG. 2 is a schematic diagram showing details of a repeater.
FIG. 3 is a schematic diagram showing details of a token control unit.
FIG. 4 is a schematic diagram showing a schematic configuration of a signal processing system according to a second embodiment of the present invention.
[Explanation of symbols]
A Signal processing system B Vehicle H Repeater 10 Recording unit (recording means)
20 Bus 30 Display device 57 Token control unit

Claims (12)

A signal processing method with high destruction resistance in a mobile object that processes signals from various electrical devices mounted on the mobile object,
Recording means for recording the output signals of the respective electrical devices provided in the front part of the moving body in a time series, and the output signals of the electrical devices provided in the right part of the same mobile body in a time series. Recording means, recording means for recording the output signals of each electrical equipment provided at the rear of the same mobile body in time series, and output signals of each electrical equipment provided at the left side of the same mobile body Recording means for recording in time series,
The recording means is stopped when the impact detection sensor of the moving body detects an impact of a predetermined value or more, and holds the recorded content up to that time,
Each repeater connected to each electrical equipment has a token control unit,
The said token control part adds the information which shows the priority specific to the said repeater, and transmits a token signal with a predetermined period, The signal processing method of the mobile body characterized by the above-mentioned.  2. The signal processing method for a mobile unit according to claim 1, wherein the repeater that has transmitted the token signal first from the time when the power source of the mobile unit is turned on functions as a master node.  3. The signal processing method for a mobile unit according to claim 2, wherein the master node is selected based on information indicating a priority added to each token signal. 2. The signal processing method for a mobile unit according to claim 1 , wherein the recording unit is activated in a state where the power source of the mobile unit is turned on . Signal processing method for a mobile body according to claim 1, wherein the recording by the recording means, characterized in that made by the fast-in fast-out method. The signal processing method for a moving body according to any one of claims 1 to 5 , wherein the moving body is an automobile, a railway vehicle, an aircraft, or a ship. A signal processing system with high destruction resistance in a moving body that processes signals from various electrical devices mounted on the moving body,
Recording means for recording the output signals of the respective electrical devices provided in the front part of the moving body in a time series, and the output signals of the electrical devices provided in the right part of the same mobile body in a time series. Recording means, recording means for recording the output signals of each electrical equipment provided at the rear of the same mobile body in time series, and output signals of each electrical equipment provided at the left side of the same mobile body Recording means for recording in time series,
The recording means is stopped when the impact detection sensor of the moving body detects an impact of a predetermined value or more, and holds the recorded content up to that time,
Each repeater connected to each electrical equipment has a token control unit,
The token control unit is configured to transmit a token signal at a predetermined period by adding information indicating priority specific to the repeater, and a signal processing system for a mobile unit. 8. The signal processing system for a mobile unit according to claim 7, wherein the repeater that has transmitted the token signal first from the time when the power source of the mobile unit is turned on functions as a master node. 9. The signal processing system for a mobile unit according to claim 8 , wherein the master node is selected based on information indicating a priority order added to each token signal. 8. The signal processing system for a moving body according to claim 7 , wherein the recording means is activated in a state where the power of the moving body is turned on . 9. The mobile signal processing system according to claim 8, wherein recording by the recording means is performed by a fast-in / fast-out method. The mobile, automobile, railway vehicle, the signal processing system of a mobile body according to any one of claims 7 to 11, characterized in that an aircraft or a ship.

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