JP7640497B2 - Roller sudden acceleration/deceleration detection system - Google Patents

Description

The present invention relates to a roller sudden acceleration/deceleration detection system capable of detecting sudden acceleration/deceleration in rollers used for rolling.

Traditionally, when compacting pavement with a roller, gradual acceleration and deceleration is required when turning back and forth, taking into consideration the impact on the smoothness of the pavement. For pavements that require a particularly high level of smoothness, in order to minimize the impact on the smoothness of the pavement when turning back and forth, a plastic bottle filled with colored water is placed near the driver's seat of the roller, and the operator drives the roller forward and backward so as to minimize the shaking of the colored water.

As a related art, Patent Document 1 discloses an invention in which, when an obstacle is detected, the roller is gradually decelerated without sudden braking, taking into account the quality of the pavement finish.

Patent No. 6845206

However, the method using plastic bottles filled with colored water mentioned above depends on the feeling of the roller operator, making it difficult to maintain consistent paving quality. Furthermore, the method disclosed in Patent Document 1 is a technology related to deceleration control when an obstacle is detected, and does not detect sudden acceleration or deceleration when the operator turns back and forth.

In view of the above problems, the present invention aims to provide a roller sudden acceleration/deceleration detection system that can detect sudden acceleration/deceleration in rollers more efficiently and effectively than conventional systems.

The invention pertaining to (1) is a roller sudden acceleration/deceleration detection system mounted on a roller, characterized in having at least an acceleration detection unit capable of detecting the acceleration of the roller, a detection control unit capable of determining whether or not there is sudden acceleration/deceleration in the roller based on the acceleration detected by the acceleration detection unit, and a display unit capable of displaying a warning based on the result of the determination by the detection control unit.

The invention according to (2) is the roller sudden acceleration/deceleration detection system described in (1) above, in which the detection control unit is provided with a vibration noise removal means for removing vibration noise in the roller from the acceleration detected by the acceleration detection unit, and a tilt effect removal means for removing the effect of gravitational acceleration due to tilt in the roller.

The invention according to (3) is the roller sudden acceleration/deceleration detection system described in (2) above, in which the detection control unit is provided with a sudden braking determination means for determining whether or not the maximum value of acceleration calculated by the tilt effect removal means per predetermined second exceeds a predetermined threshold value to determine whether or not sudden braking has occurred in the roller.

The invention according to (4) is a roller rapid acceleration/deceleration detection system according to any one of (1) to (3) above, in which the display unit is capable of displaying the acceleration of the roller in real time.

The invention according to (5) is a roller sudden acceleration/deceleration detection system according to any one of (1) to (3) above, in which the display unit is capable of displaying at least one of the number of times the roller switches gears and the number of warnings.

The invention according to (6) is a roller sudden acceleration/deceleration detection system according to any one of (1) to (3) above, in which the detection control unit is capable of detecting at least one of sudden acceleration and sudden deceleration in the roller.

Instead of the conventional roller compaction work that relied on the operator's sense, the present invention provides a detection control unit that can determine whether the roller is accelerating or decelerating, and can appropriately display a warning to the operator based on the results of the detection control unit's determination. This makes it possible to efficiently and effectively detect sudden acceleration or deceleration of the roller, improving the quality of the pavement.

1 is a schematic block diagram of a roller sudden acceleration/deceleration detection system according to an embodiment of the present invention. FIG. 2 is a front view showing an example of a display mode of a display unit in the embodiment of the present invention. FIG. 4 is a front view showing an example of a display mode of calling up recorded information on a display unit in an embodiment of the present invention. FIG. 4 is a front view showing an example of a warning display mode of a display unit in an embodiment of the present invention. 4 is a flow chart showing a processing flow of acceleration data in the embodiment of the present invention. 13 is a graph showing a change in acceleration β3 over time in an example of the present invention.

Below, we will explain one embodiment of the roller sudden acceleration/deceleration detection system of the present invention with reference to the drawings.

Figure 1 shows a schematic block diagram of the roller sudden acceleration/deceleration detection system 1 in this embodiment. That is, the roller sudden acceleration/deceleration detection system 1 in this embodiment has a roller sudden acceleration/deceleration detection device 10, an imaging unit 15 capable of capturing moving images or still images, and a warning lamp 16 capable of lighting a warning lamp.

The roller sudden acceleration/deceleration detection device 10 described above is equipped with at least a display unit 11 consisting of a touch panel display device or the like capable of displaying various information, an acceleration detection unit 14 capable of detecting the acceleration of the roller, a detection control unit 13 that determines whether sudden acceleration/deceleration has occurred and performs various controls based on the detection data of the acceleration detection unit 14, and a memory unit 12 that can record various data based on the execution instructions of the detection control unit 13.

In this embodiment, the roller sudden acceleration/deceleration detection device 10 and warning light 16 are positioned near the driver's seat of the roller to improve the operability and visibility of the roller operator. In addition, the imaging unit 15 is positioned in front of the roller and is capable of capturing images of the pavement surface being compacted and its surroundings. The roller sudden acceleration/deceleration detection device 10, warning light 16, and imaging unit 15 are configured to be easily attached and detached from the roller.

The roller sudden acceleration/deceleration detection device 10, warning light 16, and imaging unit 15 are configured to be connected to a power supply means (not shown) for operation. The power supply means may be a battery in the roller, or a generator mounted on the roller. Furthermore, a rechargeable dedicated storage battery may be connected to the roller sudden acceleration/deceleration detection device 10, or may be configured to be able to be housed within the housing of the roller sudden acceleration/deceleration detection device 10.

When the roller sudden acceleration/deceleration detection device 10 detects a sudden acceleration/deceleration of the roller, the imaging unit 15 is capable of taking a moving or still image of the detected location and storing the captured image data in the memory unit 12. This allows the detected location to be accurately identified, making it possible to repair the pavement if necessary.

Next, FIG. 2 shows an example of the display mode of the display unit 11 in this embodiment. As shown in the figure, it is equipped with a gauge display unit 111 that displays the acceleration γ1 every 0.013 seconds in real time using a gauge, and a graph display unit 112 that displays the acceleration γ2 every second in a graph over time.

As shown in the figure, the graph display unit 112 displays a sudden acceleration/deceleration threshold line 113 as a guide for whether or not sudden acceleration/deceleration has occurred in the roller. Therefore, by visually checking the graph display unit 112, the roller operator can operate the roller so that sudden acceleration/deceleration does not occur.

In addition, the display unit 11 displays an icon 114 for starting measurement of acceleration by the roller sudden acceleration/deceleration detection device 10 and an icon 115 for ending measurement, and by touching these icons, it is possible to start and end measurement of acceleration by the roller sudden acceleration/deceleration detection device 10.

In addition, various setting operations and display switching operations can be performed by touching the menu icon 116 on the display unit 11. Furthermore, the status display section 117 of the display unit 11 is configured to display the current operating status and setting status of the roller sudden acceleration/deceleration detection device 10.

Next, FIG. 3 shows an example of the display mode of the display unit 11 for calling up recorded information in this embodiment. That is, the recorded information calling window 118 is configured to be displayed when the roller operator or the like operates the menu icon 116.

The roller sudden acceleration/deceleration detection device 10 of this embodiment has a reversal counting means for counting the number of times the roller switches from forward to reverse and from reverse to forward, and the number of times the roller switches, which is counted and stored in the memory unit 12, can be displayed and output by calling up the number of times as shown in the figure.

In addition, the roller sudden acceleration/deceleration detection device 10 has a warning counting means that counts the number of times a warning is issued when it is determined that sudden acceleration/deceleration has occurred in the roller, and the number of warnings counted and stored in the memory unit 12 can be displayed and output by a call-up operation as shown in the figure.

Next, FIG. 4 shows an example of a warning display mode of the display unit 11 in this embodiment. That is, when the roller sudden acceleration/deceleration detection device 10 determines that sudden acceleration/deceleration has occurred in the roller, a message such as "sudden braking detected" is displayed on the entire screen of the display unit 11, and a warning is displayed to the roller operator.

(Control Processing Configuration)
Next, the processing configuration of the acceleration data in this embodiment will be described. FIG. 5 shows a processing flow of the acceleration data detected by the acceleration detection unit 14 in this embodiment. First, the acceleration detection unit 14 acquires the acceleration α every 0.013 seconds (step S100). Then, the detection control unit 13 calculates the acceleration β1 as the average acceleration of the 30 accelerations α (step S110), and further calculates the acceleration β2 as the average acceleration of the 15 accelerations β1 (step S120). The processing of steps S110 and S120 functions as a vibration noise removal means for removing vibration noise in the roller, and makes it possible to remove the influence of the vibration noise.

Then, the acceleration β3 is calculated by subtracting the average acceleration of the past 1000 accelerations α from the acceleration β2 (step S130). The process of step S130 functions as a tilt effect removal means for removing the effect of gravitational acceleration due to the tilt of the roller, and makes it possible to remove the effect of gravitational acceleration caused by the tilt of the roller. Then, the absolute value of the acceleration β3 is calculated as acceleration γ1 (step S140).

As described above, the acceleration γ1 is displayed on the gauge display section 111 of the display section 11. Next, the detection control section 13 calculates the maximum value of the acceleration γ1 (approximately 80 values) in one second as the acceleration γ2 (step S150). As described above, the acceleration γ2 is displayed as a graph over time on the graph display section 112 of the display section 11.

Next, a description will be given of the switching counting means in the detection control unit 13, which counts the number of times the roller switches from reverse to forward and from forward to reverse. Fig. 6 shows a graph of the change over time in the acceleration β3 described above, and in this embodiment, when the value of the acceleration β3 exceeds 0.5 m/ ^s2 and then falls below -0.5 m/ ^s2 , it is determined that one reciprocating motion has occurred, and the number of times the roller switches is counted.

According to the above-described processing configuration of this embodiment, even in the case of a roller that undergoes a turning operation due to gradual acceleration and deceleration, it is possible to detect a small acceleration of 0.5 to 1.5 m/ ^s2 during roller compression without being affected by vibration.

Other Embodiments
Although the present embodiment has been described above, the present invention is not necessarily limited to the above-described embodiment. For example, when recording the paving portion where the roller is suddenly accelerated or decelerated, it is possible to use a GPS in addition to the imaging means.

In addition, in the above-mentioned embodiment, an imaging unit 15 and a warning light 16 are provided, but the effects of the present invention can be obtained even if these are not provided.

In addition, in the above-mentioned embodiment, an example of detecting sudden acceleration and deceleration in the rollers was described, but this is not necessarily limited to this mode, and it is sufficient if at least one of sudden acceleration and sudden deceleration can be detected.

The acceleration threshold value used to determine sudden acceleration/deceleration may be configured to be appropriately set in the roller sudden acceleration/deceleration detection device 10 depending on the type of pavement, quality conditions, etc.

As described above, examples and other embodiments of the present invention have been described, but the scope of the present invention is indicated by the claims, not by the above description of the examples, and further includes all modifications within the meaning and scope of the claims. In addition, the specific materials, dimensions, shapes, etc. described in the above examples may be modified within the scope of the present invention.

REFERENCE SIGNS LIST 1: roller sudden braking detection system 10: roller sudden braking detection device 11: display unit 12: memory unit 13: detection control unit 14: acceleration detection unit 15: imaging unit 16: warning light 111: gauge display unit 112: graph display unit 113: sudden braking threshold line 114: measurement start icon 115: measurement end icon 116: menu icon 117: status display unit 118: recorded information call window

Claims (5)

A roller sudden acceleration/deceleration detection system mounted on a roller, comprising:
an acceleration detection unit capable of detecting an acceleration of the roller;
a detection control unit capable of determining whether or not the roller is undergoing rapid acceleration or deceleration based on the acceleration detected by the acceleration detection unit;
A display unit capable of displaying a warning based on a result of the determination by the detection control unit ,
The detection control unit is
The acceleration detecting unit detects the acceleration of the roller based on the detected acceleration, and the roller is subjected to a vibration noise removing process. The acceleration detecting unit detects the acceleration of the roller based on the detected acceleration, and the roller is subjected to a vibration noise removing process.
A roller sudden acceleration/deceleration detection system. The detection control unit is
2. The roller sudden acceleration/deceleration detection system according to claim 1, further comprising a sudden braking determination means for determining whether or not the maximum value of acceleration calculated by the tilt effect removal means per specified second exceeds a specified threshold value to determine whether or not sudden braking has occurred in the roller . 3. The roller sudden acceleration/deceleration detection system according to claim 1 , wherein the display unit is capable of displaying the acceleration of the roller in real time . 3. The roller sudden acceleration/deceleration detection system according to claim 1 , wherein the display unit is capable of displaying at least one of the number of times the roller switches gears and the number of times a warning is issued . 3. The roller sudden acceleration/deceleration detection system according to claim 1 , wherein the detection control unit is capable of detecting at least one of a sudden acceleration and a sudden deceleration of the roller.

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