JP2006001292A - Cargo bed vibration information presenting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo bed vibration information presenting device capable of preventing damages of cargoes which may occur while a vehicle is traveling. <P>SOLUTION: The cargo bed vibration information presenting device (10) comprises a vibration detection means (11) arranged on a cargo bed of a vehicle so as to prevent damages of cargoes, a control unit (24) to operate the average vibration value for each predetermined time (Δt), a storage unit (26) to store the mean vibration value, and an information presenting unit (30) to present the change of the mean vibration value to a driver or the like. The cargo bed vibration information presenting device (10) also comprises a warning control unit (43) to store traveling road information related to the cargo bed vibration, and vehicle position information of a GPS is input in the warning control unit. The information presenting unit provides information to the driver or the like before a vehicle reaches a traveling road part of high possibility of vibration occurrence. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a platform vibration information presentation device, and more particularly to a platform vibration information presentation device for presenting platform vibration information for preventing a load on a cargo bed to a passenger such as a driver. is there.

  In vehicle transportation of cargo by trucking etc., measures to protect cargo, such as measures to mitigate transportation vibration due to vibration reduction effect of suspension device, contrivance of packing / packaging material for packing or wrapping baggage, or package installation method In general, measures to prevent the collapse of the cargo are devised. As other load protection measures, attempts to prevent load collapse by detecting vehicle behavior or load imbalance due to vehicle operation or load conditions, or by visually monitoring the load status Various measures have been proposed.

  For example, the load abnormality detection device disclosed in Japanese Patent Application Laid-Open No. 5-213108 has pressure sensors arranged at appropriate positions such as a loading platform and a body frame, and detects local overload and load weight imbalance. It is configured as follows. This load abnormality detection device is intended to prevent load collapse of a load loaded on a cargo bed, body rollover, and the like by detecting a load abnormality based on a detection result of a pressure sensor.

  Japanese Laid-Open Patent Publication No. 7-86832 discloses a load collapse monitoring device that displays an image of a load housed in a closed cargo bed on a driver's seat. The load collapse monitoring device displays an image of the state of the load on the driver's seat when an excessive impact is detected by the acceleration sensor during sudden stop, sudden start, bump, or the like. The driver or the like can visually monitor the status of the cargo on an image display and detect the possibility of collapse of the cargo in advance.

Furthermore, a load collapse alarm device for preventing the trailer from collapsing is disclosed in JP-A-10-175476. The load collapse warning device detects the wheel speed of the tractor and calculates the vehicle acceleration, and also detects the vehicle acceleration, engine driving force, trailer mass, and trailer center of gravity position, and the difference between the trailer center of gravity position and its reference value is detected. When enlarged, an alarm is issued. The operator can recognize the possibility of cargo collapse with an alarm sound and can take artificial measures against this relatively quickly.
Japanese Patent Laid-Open No. 5-213108 Japanese Laid-Open Patent Publication No.7-186832 Japanese Patent Laid-Open No. 10-175476

  However, for cargo such as fresh eggs, fish, vegetables, and other fresh foods, confectionery, fresh flowers, precision instruments, or audio products, due to the nature of the product or product, damage before collapse, that is, vibration during transportation It is necessary to prevent as much as possible the occurrence of damage caused by the above. In general, a driver is forced to drive carefully with reduced vehicle speed when transporting this kind of goods or products.

  In addition, many drivers who are engaged in the transportation work of this type of goods or products experience relatively frequent transportation in a state where the cargo is loaded into the loading platform or the cargo space without any gap and the transportation efficiency is improved. Under these recent transportation circumstances, rather than the problem of cargo collapse, the problem prior to cargo collapse, i.e., the problem of damage during transportation, becomes apparent. I have to spend a lot of nerves.

  Under these circumstances, measures for reducing the driver's nerve or driving load spent for preventing the load damage and for reliably preventing the load damage are recently required.

  However, the load abnormality detection device described in the above-mentioned Japanese Patent Application Laid-Open No. 5-213108 is configured to operate the alarm device after the pressure-sensitive sensor arranged on the loading platform detects the behavior or load change of the load. Only. Even if a load abnormality is warned for the first time after the collapse of a load, it is impossible to prevent a damage that should be grasped as a problem before the collapse of the load, that is, a load that may occur even if the load does not change. .

  The load collapse monitoring device disclosed in Japanese Patent Application Laid-Open No. 7-188682 is configured to pick up the state of the loading platform and display an image of the cargo on the driver's seat when a steep behavior of the vehicle, impact, or the like is detected by an acceleration sensor Has been. However, in order to realize this type of monitoring apparatus, it is necessary to mount a relatively expensive and complicated imaging system on the vehicle. In addition, this monitoring device only allows the driver to visually recognize the state of the loading platform that cannot be visually observed directly through the imaging system, and the prevention of collapse of the load is only the driver's own experience and intuition, Furthermore, it depends on judgment, consideration, skill, etc. in vehicle operation. That is, the load collapse monitoring device disclosed in Japanese Patent Application Laid-Open No. 7-188682 can provide an environment in which the vehicle can be operated while observing the state of the load, whereas the load damage is a visually recognizable load. This can occur even when the entire displacement does not occur. Therefore, such a monitoring device cannot monitor the damage of the load.

  The device disclosed in Japanese Patent Application Laid-Open No. 10-175476 takes into account that it is difficult for the driver to detect the collapse of the load on the trailer due to the behavioral mismatch between the tractor and the trailer connected via the coupler. It is configured to detect the risk of collapsing based on the change in position. However, since the damage of the load can occur even in such a situation where the change in the center of gravity does not occur, the damage of the load cannot be prevented even by this device.

  The present invention has been made in view of such circumstances, and an object of the present invention is to reduce a driver's nerve or driving load spent for preventing damage to the load, and to generate a load that can occur during vehicle travel. It is an object of the present invention to provide a platform vibration information presentation device that can reliably prevent damage to the cargo.

In order to achieve the above object, the present invention is a cargo bed vibration information presentation device having vibration detection means arranged on a cargo bed of a vehicle in order to prevent load damage.
A control unit that detects the vibration information of the loading platform based on the detection result of the vibration detection means, and calculates the average vibration value for each predetermined time by averaging the vibration information at predetermined time intervals;
A storage unit for storing the average vibration value;
A platform vibration comprising an information presentation unit that compares the latest average vibration value with the previous average vibration value or a predetermined vibration value and presents the change of the average vibration value to the occupant as visual information or auditory information. An information presentation device is provided.

  According to the above configuration of the present invention, an occupant such as a driver can easily recognize a change in cargo bed vibration based on visual information or auditory information displayed on the information presentation unit. As visual information, simple numerical display, coloring graph display, or image display such as a bar indicator can be preferably used, and audio output, sound effect sound, or the like can be preferably used as auditory information. In this type of information presentation, it is important that the situation can be easily grasped without affecting the driving operation or the safety confirmation operation. However, according to the present invention, every predetermined time (for example, every minute) ) And the change of the average vibration value is presented to the driver or the like, so that the driver or the like can grasp the current state or predict the change relatively easily. Further, even in the case of a driver who is relatively inexperienced, it is only necessary to perform a driving operation so as to suppress an increase in vibration or avoid excessive vibration and adjust the vehicle speed or acceleration / deceleration. By referring to the information presentation of the platform vibration information presentation device of the present invention, it is easy to perform a realistic driving operation that prevents the cargo from being damaged.

 Preferably, the platform vibration information presentation device issues a visual or audible warning to the occupant when a change in average vibration value exceeds a predetermined range or when an excessive average vibration value exceeding a predetermined value is detected. A warning device is provided.

  The present invention also provides a loading platform vibration information presentation device further comprising a recording device that records vibration information and / or average vibration values in a systematic manner in the loading platform vibration information presentation device having the above-described configuration.

  According to such a platform vibration information presentation device, it is possible to analyze or perform data processing on the relationship between the status of the cargo that has arrived at the destination and the platform vibration that has occurred during transportation. Preferably, an operation recorder such as a digital tachograph that automatically records operation information such as vehicle speed, shift operation, travel time, travel distance, etc. is used as the recording device, and system time information of loading platform vibration is recorded together with the operation information. Accumulated in the device. Information on the recording device is transferred to an operation data management system or the like at the end of the operation, thereby building or updating a loading platform vibration database associated with the operation information.

The present invention is also a cargo bed vibration information presentation device having vibration detection means arranged on the vehicle cargo bed to prevent the load from being damaged,
A control unit that detects the vibration information of the loading platform based on the detection result of the vibration detection means, and calculates the average vibration value for each predetermined time by averaging the vibration information at predetermined time intervals;
A storage unit for storing the average vibration value;
An information presentation unit for notifying passengers of visual information or auditory information for preventing cargo bed vibration;
Along with storing operation information related to the platform vibration, and having a warning control unit to which GPS vehicle position information is input,
When the warning control unit detects that the vehicle has approached a runway portion that is highly likely to generate vibration, the information presenting unit notifies the occupant of the visual information or auditory information before reaching the runway portion. A platform vibration information presentation device characterized by the above is provided.

  In many cases, a product or commodity is transported on a specific route that is scheduled in advance. According to the above configuration of the present invention, the warning control unit recognizes the current position of the vehicle from the GPS vehicle position information, and based on the past operation information related to the loading platform vibration, the runway portion that is highly likely to cause the loading platform vibration. It is possible to predict in advance that the vehicle has approached. When the warning control unit detects that the vehicle has approached such a runway portion, the information presenting unit notifies the occupant of information (for example, an instruction for deceleration) for preventing the loading platform vibration before reaching.

  Preferably, the platform vibration information presentation device includes an operation recorder such as a digital tachograph that automatically records operation information such as vehicle speed, travel time, shift operation, and travel distance. The operation recorder records the platform vibration information along with the operation information in a systematic manner. The platform vibration information and operation information of the operation recorder are transferred to an operation data management system or the like after the operation is completed, and an information database relating to a runway portion having a high possibility of occurrence of vibration is constructed or updated.

  In a preferred embodiment of the present invention, the vibration detecting means is composed of an acceleration sensor arranged at an appropriate position of the cargo bed, and the acceleration sensors are arranged at the front portion, the center portion, the rear portion and the like of the cargo bed, respectively. As the vibration detection means, a rate gyro (three-axis gyro), a speedometer, a displacement meter, or the like may be used.

  In another preferred embodiment of the present invention, the control unit detects a vehicle speed based on a detection result of a vehicle speed detection unit such as a vehicle speed sensor, and detects a load of the load based on a detection result of the vehicle height sensor. Configured to do. The control unit obtains the vibration information and the average vibration value of the cargo bed using a function or the like stored in advance in the storage unit or the like based on the information on the vehicle speed and the loaded load and the detection result of the vibration detection unit.

  According to the loading platform vibration information presentation device of the present invention, visual information or auditory information for preventing loading platform vibration is notified to the driver or the like at any time, or before the vehicle reaches the runway portion where the possibility of vibration generation is high. The driver can be notified of visual information or auditory information for preventing vibration of the cargo bed. Therefore, according to the present invention, there is provided a platform vibration information presentation device that can reduce a driver's nerve or driving load spent on preventing a load from being damaged and can reliably prevent a load from being damaged while the vehicle is running. Provided.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side view schematically showing the overall configuration of a large vehicle on which the platform vibration information presentation device of the present invention is mounted.

  A large vehicle 1 having a 6 × 2 rear two-axis drive system having one front shaft and two rear shafts is illustrated in FIG. The vehicle 1 has a structure in which an engine (not shown) is mounted on the lower portion of the cab 2 and a loading platform (body) 4 is mounted on the chassis frame 3. A load (not shown) is loaded in the luggage compartment in the loading platform 4. In the luggage compartment, for example, fresh food, confectionery, fresh flowers, precision instruments, audio products, and the like are loaded with loads that are relatively easily damaged.

  A loading platform vibration information presentation device 10 (hereinafter referred to as “information presentation device 10”) is disposed on the instrument panel 6 in the cab 2. An acceleration sensor (G sensor) 11 that detects acceleration in the vertical direction is disposed at the front, center, and rear of the loading platform 4. The acceleration sensor 11 constitutes vibration detection means. A detection signal of the acceleration sensor 11 is input to the information presentation device 10 via the control signal line 12. A vehicle speed sensor 14 and a vehicle height sensor 15 are disposed at predetermined portions of the vehicle 1. Detection signals from the vehicle speed sensor 14 and the vehicle height sensor 15 are input to the information presentation apparatus 10 via the control signal lines 16 and 17.

  The information presentation device 10 includes an operation recorder and a GPS (Global Positioning System) receiver. The operation recorder is preferably a digital tachograph and automatically records vehicle speed, distance traveled, time of travel, engine speed, shift operation, etc., and is linked with a GPS receiver to provide the current position of the vehicle 1. In addition, the travel route, travel distance, etc. are recorded. The GPS receiver receives the signal S from the artificial satellite, obtains the reception position, and detects the geographical current position of the vehicle 1 as needed.

  FIG. 2 is a system configuration diagram showing the overall configuration of the control system including the information presentation device 10.

  The information presentation device 10 includes an operation switch 21, a power supply circuit 22, an input unit 23, a control unit 24, an output unit 25, a storage unit 26, an information presentation unit 30, and a warning control unit 43. A GPS receiver 42 is provided. The information presentation unit 30 includes a monitor unit 31 and an alarm device 32. The monitor unit 31 includes a display that displays changes in the average vibration value of the cargo bed as visual information. The alarm device 32 emits an alarm sound or displays an alarm display or the like to alert a driver or the like when an excessive vibration that may cause a load damage occurs in the cargo bed 4. The warning control part 43 memorize | stores operation data, such as the past runway information relevant to the carrier vibration generation | occurrence | production. The vehicle position information of the GPS receiver 42 is input to the warning control unit 43. When the warning control unit 43 detects that the vehicle 1 has approached the road part where the possibility of occurrence of vibration is high, the warning control part 43 displays a warning such as deceleration on the monitor unit 31 before reaching the road part.

  The information presentation device 10 is activated or deactivated according to a manual operation of the operation switch 21. The monitor unit 28 displays the vibration of the cargo bed 4, and the alarm device 32 emits an alarm sound or displays an alarm display or the like when an excessive vibration that may cause a load damage occurs in the cargo bed 4.

  The control signal lines 12, 16, and 17 of the acceleration sensor 11, the vehicle speed sensor 14, and the vehicle height sensor 15 are connected to the input unit 23, and the control unit 24 detects the sensors 11, 14, and 15 input to the input unit 23. Based on the signal, acceleration, vehicle speed and vehicle height are detected. The acceleration sensor 11 detects the vertical (vertical direction) acceleration of these parts in order to grasp the vibrations of the front part, the center part, and the rear part of the loading platform 4. The vehicle speed sensor 14 detects the vehicle speed in order to grasp the carrier vibration by function calculation, and the vehicle height sensor 15 detects the vehicle height in order to detect the load on the carrier 4.

  FIG. 3 is a flowchart showing a control mode of the information presentation apparatus 10. In the control mode shown in FIG. 3, the vibration of the loading platform is grasped based on the detection result of the acceleration sensor 11.

The information presentation device 10 is operated by a manual operation (power ON) of the operation switch 21. Control unit 24, the count value is initialized (n = 1), it sets the acceleration X ₀ to the initial value X _min (S1). The initial value X _min is determined in advance in accordance with, for example, the vibration characteristics unique to the vehicle, and is defined as an acceleration that is unlikely to cause a load damage. The initial value _Xmin may be set to acceleration = 0.

The control unit 24 activates the timer function of the timing means (S2), and detects the acceleration of the sampling interval (time) Δt _n preset in the timing means (S3). The detection results of the acceleration sensors 11 at the front, center, and rear of the loading platform are input to the input unit 23 via the control signal line 12, and the control unit 24 determines the vertical position of each unit based on the detection results of the acceleration sensors 11. Detect direction acceleration. Arithmetic circuit of the control unit 24 averages bed front central portion and a rear portion of the acceleration time, calculates an average acceleration value X _n at the sampling interval (time Δt _n) (S4). The acceleration average values _{Xn at the} front, center, and rear of the loading platform are stored in the storage unit 26, respectively. The control unit 24 grasps the acceleration as vibration information and handles the acceleration average value _Xn as an average vibration value for each predetermined time Δt _n .

The arithmetic circuit of the control unit 24 further calculates the absolute value of the acceleration change (X _n −X _(n−1) ) to determine whether or not the acceleration average value X _n has changed significantly. When the absolute value of the acceleration change (X _n −X _(n−1) ) is equal to or smaller than the predetermined value ΔX, the transmission circuit of the control unit 24 monitors X _(n−1) (= X _min ) from the output unit 25. It outputs to the part 31 and the operation recorder 41 (S5, S6). On the other hand, when the absolute value of the acceleration change (X _n −X _(n−1) ) exceeds the predetermined value ΔX, the transmission circuit sends the detected acceleration X _n from the output unit 25 to the monitor unit 31 and the operation recorder 41. Output (S5, S10).

The storage unit 26 stores in advance a maximum acceleration X _max that defines the occurrence of excessive vibration. When the acceleration X _n exceeds a predetermined value X _max , the transmission circuit of the control unit 24 is connected via the output unit 25. An alarm activation signal is output to the alarm device 32, and the alarm device 32 issues a visual or audible alarm (S11, S12).

Acceleration detecting (S3), the operation and storage of the average acceleration value X _n (S4), acceleration change _{(X n - X (n-} 1)) and the comparison determination of the predetermined value [Delta] X (S5), the acceleration X _n with a predetermined value Each of the comparison determination with _Smax (S11), the output of acceleration _Xn or X _(n-1) (S6, S10), and the alarm device operation (S12) is performed in a preset sampling interval Δt _1. Δt _n is repeatedly executed under the control of the timing means (S7, S8).

When the average acceleration value _Xn fluctuates beyond the range of the predetermined value ΔX in an arbitrary sampling period Δt _n , the acceleration value displayed on the monitor unit 31 is updated to the average acceleration value _Xn, and the change in acceleration is Recorded in the operation recorder 41. Therefore, the information presentation apparatus 10, the display of the monitor unit 31 when the acceleration average value X _n of the sampling interval Delta] t _n continuously monitors fluctuations in a relatively large average acceleration value X _n exceeding a predetermined value ΔX occurs Therefore, the monitor 31 displays to the driver or the like a display that allows simple determination without impeding the driver's vehicle operation. As the display of the monitor unit 31 that can be easily determined, for example, a simple numerical display, a color graph display, a bar indicator, a display that can be easily determined visually, such as a figure or illustration display, can be exemplified. The information presentation device 10 may include a sound source that auditorily presents information about fluctuations in the acceleration average value _Xn to the driver or the like by voice or sound effect instead of the image display of the monitor unit 31. Regardless of which information presentation means is used, according to the information presentation apparatus 10 configured as described above, which updates information only when an acceleration change exceeding a specific range occurs, the driver's driving action and safety confirmation are performed. Simple information presentation that does not hinder can be performed.

  Moreover, since the information presentation apparatus 10 gives the acceleration information of the front part, the center part, and the rear part of the loading platform 4 to the driver or the like, the driver grasps the vibration of each part of the loading platform 4 with respect to the steady vibration during driving. be able to. Therefore, the driver can perform vehicle operation in consideration of the loading condition of the load (load arrangement of the loading platform 4 and the like) in order to prevent the load from being damaged.

  In addition, the vibration which generate | occur | produces in the loading platform 4 differs greatly with road surface properties. When the driver drives the vehicle 1 in an area / district that is not familiar with the traveling road surface environment, in general, the driver cannot perform speed adjustment or acceleration / deceleration operation suitable for the road surface environment. It is easy to damage. However, even in such a case, the driver will be able to avoid damage to the load by adjusting the speed and accelerating / decelerating based on the acceleration information obtained from the information presentation device 10. .

  FIG. 4 is a flowchart showing another control mode of the information presentation apparatus 10.

  In the control mode shown in FIG. 4, the vibration of the loading platform is grasped based on the acceleration, the cargo load, and the vehicle speed. The storage unit 26 (FIG. 2) stores in advance vehicle-specific information (vehicle height at the time of unloading; wheel base value; correlation between cargo loading capacity and vehicle height; vibration characteristics of the vehicle body at the time of unloading). In addition, information for grasping the carrier vibration (correlation between the carrier load, the vehicle speed, and the acceleration) is stored in advance.

The information presentation device 10 is operated by manual operation (power ON) of the operation switch 21, and the control unit 24 performs initialization (n = 1, acceleration X ₀ = initial value X _min ) setting (S1), and time adjustment After the timer function is activated (S2), the detection value of the vehicle height sensor 15 is read (S20). The arithmetic circuit of the control unit 24 calculates the load on the loading platform 4 based on the vehicle body information stored in advance in the storage unit 26 (S21). The position and the number of installation of the vehicle height sensor 14 are determined in accordance with the load response characteristics of the vehicle body, and are disposed at appropriate positions of the vehicle 1, for example, at the lower part of the cab 2 and the rear part of the cargo bed, or at the rear part and the front part of the cargo bed. It is arranged.

The arithmetic circuit of the control unit 24 reads the detection values of the acceleration sensor 11 and the vehicle speed sensor 14 (S22), and obtains the average vibration (vibration average value Y _n ) of the sampling section (time) Δt _n from these actually measured values (S3). ). For example, the arithmetic circuit reads the above-mentioned vehicle body information (wheel base value; vibration characteristics of the vehicle body in an unloaded state) stored in the storage device and information for grasping the carrier vibration (correlation between the load on the carrier, the vehicle speed, and the acceleration) ) And based on the load (S21) of the loading platform, the vibration average values Y _n of the loading platform front, center and rear are calculated using a predetermined function formula or control map, and stored in the storage unit 26. To do.

The control unit 24 sequentially calculates or estimates the average vibration (vibration average value Y _n ) in a preset sampling interval (time) Δt _n , and the storage unit 26 is generated for each sampling interval (time) Δt _n . The vibration average value Y _n is stored. The control unit 24 determines the fluctuation of the vibration average value Y _n (S5), and when the change of the vibration average value Y _n exceeds a predetermined range (predetermined value ΔY), the vibration average value Y _n displayed on the monitor unit 31. (S10), and if the fluctuation is within the predetermined range (predetermined value ΔY), the display of the vibration average value shown on the monitor unit 31 is maintained (S6). Moreover, when the excessive vibration generate | occur | produces, the control part 24 operates the alarm device 32 and issues a warning to a driver | operator etc. (S11, S12).

As shown in FIG. 2, since the control unit 24 is connected to the operation recorder 41 via the output unit 25, the sampling section is used regardless of the control mode (FIGS. 3 and 4). The vibration information (acceleration average value X _n or vibration average value Y _n ) of (time) Δt _n is recorded in the operation recorder 41. Since the operation recorder 41 is connected to the GPS receiver 42, the geographical position information of the vehicle 1 can be recorded together with the operation information and vibration information.

  Here, the operation recorder 41 automatically records operation information such as vehicle speed, travel distance, and travel time in a timely manner, and if desired, the temperature and humidity inside the cargo bed (body), the temperature outside the vehicle, the humidity, etc. The system automatically records environmental information or external information. The operation manager can take out the operation record recorded in the operation record meter 41 with a dedicated reader or the like at the end of the operation and move the data by information processing means such as an operation management system.

According to the information presentation device 10 of the present embodiment, vibration information (acceleration average value X _n or vibration average value Y _n ) during operation is recorded on the operation recorder 41 as needed, and the accurate information obtained by the GPS receiver 42 is obtained. The vehicle position information is also recorded in the operation recorder 41 as needed. Therefore, the operation manager processes and statistically processes the vibration information and vehicle position information during operation together with normal operation data (vehicle speed, distance traveled, time of travel, etc.) after the operation ends, By analyzing the relationship between the presence / absence or damage situation, operation records, vehicle position, and vibration information, the travel route, vehicle position, vibration information, and the like can be compiled into a database. Such a database can be used to identify road sections that are prone to vibrations that affect the load damage, identify road sections that are prone to damage, and load damage including other factors besides vibration. Enable countermeasures. Thereby, for example, it is possible to notify the driver of a vehicle approaching this type of road portion in advance of the occurrence of vibration or warn of a deceleration operation or driving attention for avoiding the occurrence of vibration.

  In the present embodiment, when the warning control unit 43 shown in FIG. 2 detects that the vehicle 1 has approached the runway portion where there is a high possibility of vibration generation based on data read from such a database, Before reaching the runway portion, a warning such as deceleration is displayed on the monitor unit 31.

  It should be noted that the vibration of the loading platform is not determined only by the properties of the track, but is affected by the vehicle speed, the load load, and the like. For this reason, using the database, data such as vehicle speed and cargo load is associated with position information and vibration status data, and even if the vehicle is traveling on the same road surface, if the vehicle speed is low, a warning of vibration occurrence is not given. When the vehicle speed is relatively high, it is possible to construct an operation management system that warns of the occurrence of vibration or automatically decelerates.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications or changes can be made within the scope of the present invention described in the claims. Is possible.

  For example, in the above embodiment, acceleration sensors are arranged at the front, center, and rear of the loading platform. However, for example, a larger number of acceleration sensors can be arranged on the loading platform or can be attached to any place. A portable acceleration sensor may be prepared and appropriately attached to a desired part of the loading platform.

  Further, a rate gyro (3-axis gyro), a speedometer, a displacement meter, or the like may be used as the vibration detection means. The acceleration sensor 11 described above is configured to detect acceleration in the vertical direction (vertical direction). For example, when a rate gyro is used, the vibration frequency range of the suspension device that mainly controls the vibration of the loading platform ( In the range of 25 Hz or less, it is possible to detect vibration changes in the main directions (vertical direction, front-rear direction, left-right direction, pitch direction, yaw direction, and roll direction), respectively, and present cargo platform vibration information based on detailed detection results. It becomes possible.

  Further, vibration data using the frequency and amplitude as indices, or vibration values using IRI values (IRI: International Roughness Index (IRI)) as indices can also be used as loading platform vibration information.

  INDUSTRIAL APPLICABILITY The present invention is mounted on a vehicle such as a truck that transports a product or a product as a cargo bed vibration information presentation device that presents a cargo bed vibration information for preventing a load on a cargo bed to be damaged to a driver or the like. The present invention can also be applied to a device for preventing damage to products or goods transported by rail transportation or the like.

It is a side view which shows roughly the whole structure of the large sized vehicle which mounts the loading platform vibration information presentation apparatus of this invention. It is a system configuration figure showing the whole control system composition containing a loading platform vibration information presentation device. It is a flowchart which shows the control form of a loading platform vibration information presentation apparatus. It is a flowchart which shows the other control form of a loading platform vibration information presentation apparatus.

Explanation of symbols

1 Vehicle 2 Cab 3 Chassis frame 4 Cargo body (body)
6 instrument panel 10 loading platform vibration information presentation device 11 acceleration sensor (G sensor)
14 Vehicle speed sensor 15 Vehicle height sensor 24 Control unit 26 Storage unit 30 Information presentation unit 31 Monitor unit 32 Alarm device 41 Operation recorder 42 GPS receiver 43 Warning control unit

Claims (7)

A cargo bed vibration information presentation device having vibration detection means arranged on a vehicle bed to prevent a load from being damaged,
A control unit that detects the vibration information of the loading platform based on the detection result of the vibration detection means, and calculates the average vibration value for each predetermined time by averaging the vibration information at predetermined time intervals;
A storage unit for storing the average vibration value;
A platform vibration comprising an information presentation unit that compares the latest average vibration value with the previous average vibration value or a predetermined vibration value and presents the change of the average vibration value to the occupant as visual information or auditory information. Information presentation device. A cargo bed vibration information presentation device having vibration detection means arranged on a vehicle bed to prevent a load from being damaged,
A control unit that detects the vibration information of the loading platform based on the detection result of the vibration detection means, and calculates the average vibration value for each predetermined time by averaging the vibration information at predetermined time intervals;
A storage unit for storing the average vibration value;
An information presentation unit for notifying passengers of visual information or auditory information for preventing cargo bed vibration;
Along with storing operation information related to the platform vibration, and having a warning control unit to which GPS vehicle position information is input,
When the warning control unit detects that the vehicle has approached a runway portion that is highly likely to generate vibration, the information presenting unit notifies the occupant of the visual information or auditory information before reaching the runway portion. A platform vibration information presentation device characterized by the above.   When the change of the average vibration value exceeds a predetermined range, or when an excessive average vibration value exceeding the predetermined value is detected, an alarm device is further provided that issues a visual or audible alarm to the occupant. The platform vibration information presentation device according to claim 1 or 2.   The platform vibration information presentation device according to any one of claims 1 to 3, further comprising a recording device that records the vibration information and / or the average vibration value systematically.   5. The loading platform vibration information presentation device according to claim 4, wherein the recording device comprises an operation recorder that automatically records the vibration information and / or the average vibration value together with operation information.   The vibration detection means includes a plurality of acceleration sensors arranged at predetermined positions on the loading platform, and an average acceleration obtained by time-averaged vertical acceleration detected based on the detection result of the acceleration sensor is used as the average vibration value. The platform vibration information presentation device according to claim 1, wherein the platform vibration information presentation device is provided. The control unit detects a vehicle speed based on a detection result of a vehicle speed detection unit such as a vehicle speed sensor, detects a load of the load based on a detection result of the vehicle height sensor,
6. The apparatus according to claim 1, wherein the vibration information is detected and the average vibration value is calculated based on information on a vehicle speed and a loaded load and a detection result of the vibration detection unit. Cargo bed vibration information presentation device.

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