Roller sudden acceleration / deceleration detection system

Abstract

To provide a roller rapid acceleration / deceleration detection system capable of detecting rapid acceleration / deceleration of a roller more efficiently and effectively than before.SOLUTION: A roller rapid acceleration / deceleration detection system 1 mounted on a roller includes at least: an acceleration detection part 14 capable of detecting acceleration in the roller; a detection control part 13 capable of determining the presence or absence of rapid acceleration / deceleration in the roller based on the acceleration detected by the acceleration detection part 14; and a display part 11 capable of displaying a warning based on the determination result by the detection control part 13.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a roller sudden acceleration / deceleration detection system capable of detecting sudden acceleration / deceleration in a roller used for rolling. [Background technology]

[0002] Conventionally, in pavement compaction work using a roller, it has been required to operate the roller with gradual acceleration and deceleration when turning back and forth, taking into consideration the effect on the smoothness of the pavement. In pavements that require particularly high smoothness, in order to minimize the effect on the smoothness of the pavement due to the turning back and forth operation, a plastic bottle filled with colored water was placed near the driver's seat of the roller, and the operator operated the roller to move forward and backward so as to reduce the shaking of the colored water.

[0003] As a prior art technique, Patent Document 1 discloses an invention in which, when an obstacle is detected, the rollers are gradually decelerated without being suddenly braked, taking into account the finishing quality of the pavement. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6845206 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-mentioned method using plastic bottles filled with colored water depends on the feeling of the roller operator, and it is difficult to maintain a consistent paving quality. Also, the method disclosed in Patent Document 1 is a technology related to deceleration control when an obstacle is detected, and it does not detect sudden acceleration or deceleration when the operator turns around between forward and backward movement.

[0006] SUMMARY OF THE PRESENTLY PREFERRED EMBODIMENTS In view of the above-mentioned problems, an object of the present invention is to provide a roller sudden acceleration / deceleration detection system capable of detecting sudden acceleration / deceleration of a roller more efficiently and effectively than conventional systems. [Means for solving the problem]

[0007] The invention related 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 acceleration in 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 determination result by the detection control unit.

[0008] The invention related to (2) is the roller sudden acceleration / deceleration detection system described in (1) above, wherein the detection control unit is equipped 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 of the roller.

[0009] The invention related to (3) is the roller sudden acceleration / deceleration detection system described in (2) above, wherein the detection control unit is equipped with 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.

[0010] The invention related to (4) is the roller sudden acceleration / deceleration detection system according to any one of (1) to (3) above, wherein the display unit is capable of displaying the acceleration of the roller in real time.

[0011] The invention related to (5) is the roller sudden acceleration / deceleration detection system according to any one of (1) to (3) above, 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.

[0012] The invention related to (6) is the roller sudden acceleration / deceleration detection system described in any one of (1) to (3) above, wherein the detection control unit is capable of detecting at least one of sudden acceleration and sudden deceleration in the roller. Effect of the Invention

[0013] According to the present invention, instead of the conventional roller compaction work that relied on the sense of the operator, it is possible to provide a detection control unit that can determine whether or not the roller is suddenly accelerated or decelerated, and to appropriately display a warning to the operator based on the result of the detection control unit. This makes it possible to efficiently and effectively detect sudden acceleration or deceleration of the roller and improve the quality of the pavement. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic block diagram of a roller sudden acceleration / deceleration detection system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing an example of a display mode of a display unit in the embodiment of the present invention. [Diagram 3] 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. [Figure 4] 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. [Diagram 5] 4 is a flow chart showing a processing flow of acceleration data in an embodiment of the present invention. [Figure 6] 13 is a graph showing a change in acceleration β3 over time in an example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of a roller sudden acceleration / deceleration detection system of the present invention will be described with reference to the drawings.

[0016] 1 shows a schematic block diagram of a 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.

[0017] In addition, the above-mentioned roller sudden acceleration / deceleration detection device 10 at least comprises a display unit 11 consisting of a touch panel display device or the like capable of displaying various types of information, an acceleration detection unit 14 capable of detecting the acceleration of the roller, a detection control unit 13 that determines whether or not there is sudden acceleration / deceleration and executes 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.

[0018] In this embodiment, the roller sudden acceleration / deceleration detection device 10 and warning light 16 are arranged near the driver's seat of the roller to improve the operability and visibility of the roller operator. The imaging unit 15 is arranged 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.

[0019] The roller sudden acceleration / deceleration detection device 10, the warning light 16, and the 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 of 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.

[0020] 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 image or a still image of the detected location and storing the captured image data in the memory unit 12. This makes it possible to accurately identify the detected location, making it possible to repair the pavement as necessary.

[0021] 2 shows an example of the display mode of the display unit 11 in this embodiment. As shown in the figure, the display unit 11 is provided 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.

[0022] As shown in the figure, a sudden acceleration / deceleration threshold line 113 is displayed on the graph display section 112 as a guide for determining whether or not sudden acceleration / deceleration has occurred in the roller. Therefore, by visually checking the graph display section 112, the operator of the roller can operate the roller so that sudden acceleration / deceleration does not occur.

[0023] 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.

[0024] Also, various setting operations, display switching operations, and the like are possible by touching a menu icon 116 on the display unit 11. Furthermore, a 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.

[0025] 3 shows an example of a display mode for calling up recorded information on the display unit 11 in this embodiment. That is, a recorded information calling window 118 is displayed by operating a menu icon 116 by an operator of the rollers or the like.

[0026] The roller sudden acceleration / deceleration detection device 10 of this embodiment has a switching 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 is counted and stored in the memory unit 12 can be displayed and output by a call-up operation as shown in the figure.

[0027] In addition, the roller sudden acceleration / deceleration detection device 10 has a warning counting means for counting the number of times a warning has been issued after determining that sudden acceleration / deceleration has occurred in the rollers, and the number of warnings counted and stored in the memory unit 12 can be displayed and output as shown in the figure by a call-up operation.

[0028] 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.

[0029] (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 these steps S110 and S120 functions as a vibration noise removing means for removing vibration noise in the roller, and makes it possible to remove the influence of the vibration noise.

[0030] Next, 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 removing means for removing the effect of the gravitational acceleration due to the tilt of the roller, and makes it possible to remove the effect of the gravitational acceleration caused by the tilt of the roller. Then, the absolute value of the acceleration β3 is calculated as the acceleration γ1 (step S140).

[0031] 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 (about 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.

[0032] Next, a description will be given of a means for counting the number of times the rollers are turned from reverse to forward and from forward to reverse in the detection control unit 13. In FIG. 6, a graph showing the change over time in the acceleration β3 is shown. In this embodiment, the value of the acceleration β3 is 0.5 m / s 2 and then -0.5m / s 2 When the roller moves back and forth, it is determined that one reciprocating motion has occurred, and the number of times the roller switches positions is counted.

[0033] According to the above-mentioned processing configuration of this embodiment, even in the case of a roller that performs a turning operation due to gradual acceleration and deceleration, the rolling speed during roller compaction is 0.5 to 1.5 m / s 2 This makes it possible to detect small accelerations without being affected by vibration.

[0034] (Other embodiments) Although the present embodiment has been described above, the present invention is not necessarily limited to the above-mentioned embodiment. For example, when recording the pavement location where the roller has suddenly accelerated or decelerated, it is possible to use GPS in addition to the imaging means.

[0035] In the above-described embodiment, the image pickup unit 15 and the warning light 16 are provided, but the effects of the present invention can be obtained even if these are not provided.

[0036] In addition, in the above-mentioned embodiment, an example of detecting sudden acceleration / deceleration in the rollers was described, but this is not necessarily limited to such a form, and it is sufficient if at least one of sudden acceleration and sudden deceleration can be detected.

[0037] Furthermore, the acceleration threshold value used to judge sudden acceleration / deceleration may be configured so that it can be appropriately set in the roller sudden acceleration / deceleration detection device 10 depending on the type and quality conditions of the pavement.

[0038] As described above, the 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 description of the examples above, 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 can be modified within the scope of the present invention. [Explanation of symbols]

[0039] 1. Roller sudden braking detection system 10. Roller sudden braking detection device 11 Display section 12 Storage section 13 Detection control section 14 Acceleration detection section 15 Imaging unit 16 warning light 111 Gauge display 112 Graph display section 113 Emergency braking threshold line 114 Measurement start icon 115 Measurement end icon 116 menu icon 117 Status display section 118 Record Information Call Window

Claims

1. 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 provided with a vibration noise removing unit that removes vibration noise of the roller based on the detected acceleration, and a tilt effect removing unit that removes the effect of gravitational acceleration due to tilt of the roller. A roller sudden acceleration / deceleration detection system.

2. The detection control unit: a sudden braking determination means for determining whether or not the maximum value of the 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 on the roller; The roller sudden acceleration / deceleration detection system according to claim 1 .

3. 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 or 2.

4. The display unit is capable of displaying at least one of the number of turning operations of the roller and the number of warnings.

3. The roller sudden acceleration / deceleration detection system according to claim 1 or 2.

5. The detection control unit is capable of detecting at least one of a sudden acceleration and a sudden deceleration in the roller.

3. The roller sudden acceleration / deceleration detection system according to claim 1 or 2.

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