JP2005309545A - Data recording device and operation monitoring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data recording device which can record data for recognizing the operational status of not only a monitoring object to which electric currents are externally supplied but also a monitoring object to which electric currents are not externally supplied. <P>SOLUTION: A data recording device is composed of a timer part 4 which generates time data D2, a storage part 5 and a CPU 8, and can be mounted on a monitoring object. The CPU 8 detects the level of an oscillation occurring to the monitoring object for each prescribed time based on a detection signal S1 detected by an oscillation sensor 2 and makes the storage part 5 store the detected level of the oscillation and the detection time of the level of the oscillation specified based on the time data D2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a data recording device that stores a level of vibration generated in a monitoring object and a detection time of this level, and an operation monitoring device that determines an operation status of the monitoring object based on vibration generated in the monitoring object. It is about.

As a monitoring device that monitors the operating status of a monitoring object, an operating rate monitoring device disclosed in Japanese Patent Laid-Open No. 2003-150235 is known. This operating rate monitoring device detects the operating current by attaching a sensor to the wiring of the machine main motor (specifically, any one of the three phases connected to the motor) and detecting the operating current. It is configured to obtain operational status.
JP 2003-150235 A (page 2)

  However, the above-described conventional operating rate monitoring apparatus has the following problems. That is, in this conventional operating rate monitoring device, the operating rate of the monitoring object is acquired by detecting the operating current flowing in the wiring connected to the monitoring object. For this reason, for example, a monitoring object that is configured to receive no external current via wiring, such as a monitoring object that moves over a wide range, obtains the operating status without modifying the internal structure of the monitoring object. There is a problem that it is difficult to do.

  The present invention has been made to solve the above-described problem, and is intended to determine not only the monitoring target object to which current is supplied from the outside but also the monitoring target object to which current is not supplied from the outside. The main object is to provide a data recording apparatus capable of recording data. Another main object is to provide an operation monitoring device that can determine the operation status of these monitoring objects.

  In order to achieve the above object, the data recording apparatus according to claim 1 includes a timer unit that generates time data, a storage unit, and a processing unit, and is configured to be attachable to a monitoring object together with a vibration sensor. Based on the sensor signal of the vibration sensor, the level of vibration occurring in the monitoring object is detected every predetermined time, and the detected time of the level specified based on the detected vibration level and the time data Are stored in the storage unit. The “detection time” in this specification means a time at which the time at which the level is detected can be specified. For example, the absolute time indicating the current time of what hour, minute, and second, as well as the reference time It is a concept that includes elapsed time. In addition, a data recording apparatus can be configured with a vibration sensor.

  The operation monitoring device according to claim 2 compares the level of vibration generated in the monitoring target detected by the vibration sensor attached to the monitoring target body with a preset threshold value, and the level is A discriminating unit that discriminates that the monitoring object is operating when the threshold is equal to or greater than the threshold value; An operation monitoring device can also be configured with a vibration sensor.

  The operation monitoring device according to claim 3 includes a timer unit that generates time data, a storage unit, a processing unit, and a determination unit, and is configured to be attachable to a monitoring object together with a vibration sensor. Based on the sensor signal of the vibration sensor, the level of vibration generated in the monitoring object is detected every predetermined time, and the detected vibration level and the detection time of the level specified based on the time data are detected. The storage unit stores the level, and the determination unit compares the level stored in the storage unit with a preset threshold, and the monitoring target is activated when the level is equal to or higher than the threshold. It is determined that there is. An operation monitoring device can also be configured with a vibration sensor.

  According to a fourth aspect of the present invention, the operation monitoring device includes a timer unit that generates time data, a storage unit, and a processing unit, and is configured to be attached to a monitoring object together with the vibration sensor, and the processing unit is a sensor of the vibration sensor Based on the signal, the level of vibration generated in the monitored object is detected at predetermined time intervals, and the detected vibration level and the detection time of the level specified based on the time data are stored in the storage unit. A data recording device to be used, and a determination unit that compares the level stored in the storage unit with a preset threshold and determines that the monitoring target is operating when the level is equal to or higher than the threshold And. An operation monitoring device can also be configured with a vibration sensor.

  The operation monitoring device according to claim 5 is the operation monitoring device according to claim 3 or 4, wherein the determination unit calculates a time when the level is equal to or higher than the threshold as an operation time.

  The operation monitoring device according to claim 6 is the operation monitoring device according to claim 5, wherein the determination unit calculates an operation rate of the monitoring object based on the operation time.

  In the data recording apparatus according to claim 1, the processing unit detects the level of vibration generated in the monitoring target object at predetermined time intervals based on the sensor signal of the vibration sensor, and the detected vibration level and timer This level of detection time specified based on the time data generated by the unit is stored in the storage unit. Therefore, using the vibration level stored in the data storage device and the detection time thereof and the vibration level (threshold) when the monitoring object is not operating, the stored vibration level and threshold are stored. Compared with the monitoring target that receives current supply from the outside, the monitoring target that does not receive current supply from the outside can be operated without modifying the internal structure of the monitoring target. In addition to being able to discriminate (monitor), the operating time and operating rate of the monitoring object can also be calculated.

  According to the operation monitoring apparatus of claim 2, the determination unit compares the level of vibration occurring in the monitoring target object with a preset threshold value, and when the level is equal to or higher than the threshold value, the monitoring target object By determining that the system is operating, not only monitoring objects that receive current supply from the outside, but also monitoring objects that do not receive current supply from outside, when operating and when not operating (when stopped) With respect to all the monitoring objects that have differences in their vibration levels, the operating status can be determined (monitored) without modifying the internal structure of the monitoring object.

  According to the operation monitoring apparatus of the third aspect, the processing unit detects the level of vibration occurring in the monitoring target body at predetermined time intervals based on the sensor signal of the vibration sensor and detects the detected vibration level. And the detection time of this level specified based on the time data generated by the timer unit is stored in the storage unit, the determination unit compares the level stored in the storage unit with a preset threshold value, By determining that the monitoring target is operating when the level is equal to or higher than the threshold, not only the monitoring target that receives the supply of current from the outside, but also the monitoring target that does not receive the supply of current from the outside For all monitored objects that have a difference in the level of vibration during operation and non-operation (when stopped), the operating status is attached to the monitored object without modifying the internal structure of the monitored object. It is possible to determine (monitor) in a state.

  According to the operation monitoring device of claim 4, the processing unit of the data recording device attached to the monitoring object is specified based on the level of vibration generated in the monitoring object and the time data generated by the timer unit. This vibration level detection time is stored in the storage unit, and the discriminating unit compares the vibration level stored in the storage unit with a preset threshold value. By determining that the body is operating, not only the monitoring target that receives current from the outside, but also the monitoring target that does not receive current from the outside can be ), The operating status can be discriminated (monitored) without modifying the internal structure of the monitoring object for all of the monitoring objects that are different in each vibration level.

  Further, according to the operation monitoring device of claim 5, the determination unit calculates the operation time for the monitoring target object to the operator by calculating the operation time as the operation time when the vibration level is equal to or greater than the threshold value. It can be recognized immediately.

  Moreover, according to the operation monitoring apparatus of claim 6, the determination unit further calculates the operation rate of the monitoring object based on the calculated operation time, thereby allowing the operator to operate with respect to the monitoring object. Can be recognized immediately.

  Hereinafter, an operation monitoring apparatus according to the present invention will be described with reference to the accompanying drawings.

  First, the configuration of the operation monitoring apparatus 1 will be described with reference to the drawings.

  As shown in FIG. 1, the operation monitoring device 1 stores a vibration sensor 2, an A / D conversion unit 3, a timer unit 4, a storage unit 5, an operation unit 6, a display unit 7, a CPU 8, a battery 9, and these. And a case (not shown) configured to be attachable to the monitoring object. The vibration sensor 2 detects the vibration level (magnitude) of the vibration generated in the attached monitoring object in real time, and outputs a detection signal (sensor signal) S1 whose amplitude changes according to the detected vibration level. Output. The A / D converter 3 converts the detection signal S1 into digital data D1 and outputs it. The timer unit 4 is configured using an RTC (Real Time Clock) and outputs, for example, time data D2 indicating the current time. Note that the time data D2 is not limited to the current time, and may be data indicating an elapsed time from a predetermined reference time. The storage unit 5 is configured using a ROM and a RAM. The ROM stores an operation program for the CPU 8. The RAM stores vibration data D3 indicating the vibration level of the monitoring target detected by the vibration sensor 2, and detection time (detection time in the present invention) D4 of the vibration data D3. The RAM also stores a threshold value D5 for comparison with the vibration data D3. In the operation unit 6, a power switch, a data collection start key, a discrimination process start key, a threshold setting key for setting a threshold D5, and a beginning and end of a section for calculating an operating time and an operating rate are specified. Section setting keys and the like are arranged. Further, when each of the above keys is operated, the operation unit 6 outputs a key signal corresponding to the key to the CPU 8. The display unit 7 is configured by using an LCD as an example, and displays the state of change of the vibration data D3 at each detection time D4 in a graph, and also displays the calculated operation time and operation rate.

  The CPU 8 operates as a processing unit and a determination unit in the present invention based on the operation program stored in the ROM, and based on the digital data D1 output from the A / D conversion unit 3, the vibration level of the monitoring target (specifically Specifically, the effective value of the detection signal S1 (hereinafter also referred to as “vibration data D3”) is calculated every predetermined time, and the time when the vibration data D3 is detected based on the time data D2 output from the timer unit 4 A data collection process in which the vibration data D3 and the detection time D4 are associated with each other and stored in the storage unit 5, and the vibration data D3, the detection time D4, and the threshold value D5 stored in the RAM are specified. Based on the above, the operating status (presence / absence of operation) of the monitoring object is determined, and the operating status determining process for calculating the operating time and the operating rate is executed. In addition, the CPU 17 causes the display unit 7 to display the results of the data collection process and the operation status determination process. The battery 9 supplies power to each component in the operation monitoring device 1 when the power switch of the operation unit 6 is on, and stops supplying power when the power switch is off.

  Next, the operation of the operation monitoring apparatus 1 will be described. First, the data collection process will be described. It is assumed that the operation monitoring device 1 is attached to a monitoring target body (in this example, a carriage) 21 as shown in FIG. As an example, in the figure, the operation monitoring device 1 is attached to the back side of the loading platform 22 of the carriage 21, but can also be attached to other parts such as a handle 23.

  First, the power switch is turned on by operating the operation unit 6. Thereby, electric power begins to be supplied from the battery 9 to each component in the operation monitoring device 1, and the operation monitoring device 1 starts operation. Specifically, the vibration sensor 2 starts detecting the vibration generated in the carriage 21 and starts outputting the detection signal S1. Next, the A / D converter 3 starts converting the detection signal S1 into digital data D1. In this state, when the data collection start key of the operation unit 6 is operated, this key signal is output to the CPU 8. At this time, the CPU 8 starts data collection processing based on the operation program stored in the storage unit 5. Specifically, the CPU 8 calculates the vibration level (vibration data D3) of the carriage 21 every predetermined time (for example, 1 second) based on the input digital data D1. Further, each time the vibration data D3 is calculated, the CPU 8 refers to the time data D2 output from the timer unit 4 and specifies the detection time D4 for the vibration data D3. Further, the CPU 8 stores the vibration data D3 calculated in this way in the storage unit 5 together with the detection time D4. The CPU 8 repeatedly executes this data collection process until the data collection start key of the operation unit 6 is operated again. Thereby, the vibration data D3 for the carriage 21 and the detection time D4 of the vibration data D3 are predetermined in the storage unit 5 from when the data collection start key of the operation unit 6 is operated until it is operated again. It is sequentially stored and accumulated (recorded) every time. That is, by executing this data collection processing, the operation monitoring device 1 functions as a data recording device (so-called data logger).

  Next, after the above-described data collection process, when the determination process start key is operated, the key signal is output from the operation unit 6 to the CPU 8. At this time, the CPU 8 starts the operation status determination process based on the operation program stored in the storage unit 5. Specifically, first, the CPU 8 sets (specifies) the threshold value D5. The threshold value D5 is preferably set to a level that slightly exceeds the vibration level generated in the carriage 21 in the stopped state. When setting the threshold value D5, the CPU 8 sets the threshold value D5 according to the key signal output from the operation unit 6 based on the operation of the threshold setting key of the operation unit 6, and stores the threshold value D5 in the storage unit 5. According to this configuration, the threshold value D5 can be changed by operating the threshold setting key every time the operation status determination process is started. On the other hand, a configuration in which the threshold value D5 is stored in advance in the storage unit 5 may be employed. In this configuration, the threshold D5 is fixed unless the threshold setting key is operated, and when the value of the threshold D5 is changed by the operation of the threshold setting key, the threshold D5 after the change is fixed. Next, the CPU 8 reads the vibration data D3 and the detection time D4 for the carriage 21 stored in the storage unit 5, and as shown in FIG. 3, the temporal transition of the vibration data D3 is indicated by a broken line indicated by the symbol A. A graph is displayed on the display unit 7. Also, the threshold value D5 indicated by the symbol B is also displayed on the display unit 7 together with the vibration data D3 as a line segment parallel to the horizontal axis.

  Next, the CPU 8 inputs a key signal output from the operation unit 6 based on the operation of the section setting key, and sets the beginning and end of the section in which the operating time Top and the operating rate Rop are to be calculated. To do. Specifically, as shown in FIG. 3, the CPU 8 causes the display unit 7 to display cursors C and D indicating the beginning and end of the section, for example, along with the vibration data D3 as a line segment parallel to the vertical axis. The display positions of the cursors C and D are changed in real time in the horizontal axis direction according to the key signal output from the operation unit 6 in accordance with the operation of the setting key. Each time the display positions of the cursors C and D are changed, the CPU 8 recognizes each time corresponding to each display position as the beginning and end of the section, and updates the settings for the beginning and end of the section. Next, the CPU 8 compares the vibration data D3 included in the set section with the threshold value D5, and the subsection E in which the vibration data D3 is greater than or equal to the threshold value D5 and the subsection F in which the vibration data D3 is less than the threshold value D5. And specify. In FIG. 3, as an example, the CPU 8 specifies the sections E1 and E2 as the sub-section E and specifies the sections F1 and F2 as the sub-section F. Next, the CPU 8 calculates the total time Te of the sections E1 and E2 specified as the sub-section E, and stores the total time Te in the storage unit 5 as the operation time Top in the section specified by the cursors C and D. At the same time, it is displayed on the display unit 7. Further, the CPU 8 calculates the total time Td of each of the sections F1 and F2 specified as the sub-section F, and divides the operating time Top by the total of the total times Te and Td, thereby specifying the cursors C and D. The operating rate Rop in the determined section is calculated, and this operating rate Rop is stored in the storage unit 5 and displayed on the display unit 7. Thereby, the operation status determination process is completed.

  Thus, according to this operation monitoring apparatus 1, while the vibration sensor 2 detects the vibration level (vibration data D3) of the vibration generated in the carriage 21 as the monitoring object, the CPU 8 sets the vibration data D3 in advance. Compared with the threshold value D5, it is determined that the cart 21 is operating when the vibration data D3 is equal to or greater than the threshold value D5. Even if there is no current supplied from outside for all monitoring objects that have differences in vibration levels, the operating status is determined (monitored) without modifying the internal structure of the monitoring object. be able to. Further, the CPU 8 calculates the time when the vibration data D3 is equal to or greater than the threshold value D5 (the total time Te of the sections E1 and E2 specified as the sub-section E) as the operation time Top, so that the operator can use the carriage 21. The operating time Top for can be immediately recognized. Further, the CPU 8 divides the operating time Top by the total of the total times Te and Td based on the operating time Top (total time Te) and the total time Td of the sections F1 and F2 specified as the sub-section F. By calculating the operating rate Rop, the operator can immediately recognize the operating rate Rop of the carriage 21.

  In the above example, the vibration sensor 2, the A / D conversion unit 3, the timer unit 4, the storage unit 5, the operation unit 6, the display unit 7, the CPU 8, and the battery 9 are all housed in one case. However, it is not limited to this configuration. For example, an operation monitoring device can be configured without the vibration sensor 2. In this case, the operation monitoring device is connected to the vibration sensor attached to the monitoring object by a wiring cable, inputs a sensor signal output from the vibration sensor, and is generated in the monitoring object based on the sensor signal. Detect vibrations. By adopting this configuration, the vibration sensor 2 having a small outer shape can be installed at a position distant from the installation position of the case, and it can be arranged at an optimum point position for detecting the vibration of the monitored object. it can.

  Further, as shown in FIG. 1, a communication unit 10 is further provided in the case, and a personal computer (personal computer) 11 is provided outside the case, and the operation monitoring apparatus 1 is configured by connecting both of them by wire or wirelessly. You can also According to this configuration, vibration data D <b> 3 and detection time D <b> 4 for the carriage 21 stored in the storage unit 5 can be transferred to the personal computer 11 via the communication unit 10. In this case, the personal computer 11 is generally superior in processing capability as compared to the CPU 8 in the case. Therefore, it is possible to cause the personal computer 11 to perform an analysis on the more complicated or large amount of operation status of the vibration data D3 and the detection time D4. Further, the vibration data D3 and the detection times D4 for the plurality of carriages 21 recorded by the plurality of operation monitoring devices 1 can be collectively processed by the personal computer 11. Therefore, for example, with respect to the plurality of carriages 21 in the factory, it is possible to monitor the overall operation situation of the plurality of carriages 21 together with the individual operation situation of each carriage 21. Further, when the personal computer 11 determines the operation status of the carriage 21 as the determination unit in the present invention, the CPU 8 performs only the data collection process described above and does not perform the operation status determination process, that is, the CPU 8 performs the process in the present invention. By configuring so as to function only as a unit, the above-described operation monitoring apparatus 1 can be configured as a data recording apparatus, and the operation monitoring apparatus according to the present invention can be configured by the personal computer 11 and the data recording apparatus.

  Moreover, although the cart 21 has been described as an example of the monitoring object, the operation monitoring apparatus 1 according to the present invention has a difference in vibration levels between the operating time and the non-operating time (stopped) in addition to the cart 21. It can be applied to all objects to be monitored. In particular, the operation monitoring device 1 according to the present invention can record vibration data D3 for determining the operation status in a state where the operation monitoring device 1 is attached to a monitoring object, and thus has a wide movement range such as a carriage 21, a bicycle, and an automobile. Therefore, it can be suitably used for a monitoring object without a power cable or the like.

2 is a block diagram showing a configuration of an operation monitoring device 1. FIG. It is a side view of the trolley | bogie 21 which attached the operation | movement monitoring apparatus 1. FIG. It is a display screen figure of the display part 7 which is displaying the time transition of the vibration level which arose in the trolley | bogie.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation monitoring apparatus 2 Vibration sensor 3 A / D conversion part 4 Timer part 5 Memory | storage part 8 CPU
11 Personal computer 21 Dolly D1 Digital data D2 Time data D3 Vibration data D4 Detection time D5 Threshold value S1 Detection signal

Claims (6)

It comprises a timer unit that generates time data, a storage unit and a processing unit, and is configured to be attachable to a monitoring object together with a vibration sensor.
The processing unit detects a level of vibration generated in the monitoring target body based on a sensor signal of the vibration sensor every predetermined time, and specifies based on the detected vibration level and the time data. A data recording apparatus that stores the detection time of the level in the storage unit.   The level of vibration generated in the monitoring target detected by the vibration sensor attached to the monitoring target is compared with a preset threshold, and the monitoring target operates when the level is equal to or higher than the threshold. An operation monitoring device comprising a determination unit that determines that the A timer unit that generates time data, a storage unit, a processing unit, and a determination unit are configured to be attachable to a monitoring object together with a vibration sensor,
The processing unit detects the level of vibration generated in the monitoring target body based on a sensor signal of the vibration sensor every predetermined time, and identifies the level determined based on the detected vibration level and the time data. The level detection time is stored in the storage unit,
The determination unit compares the level stored in the storage unit with a preset threshold and determines that the monitoring target is operating when the level is equal to or higher than the threshold. . A timer unit that generates time data, a storage unit, and a processing unit are provided so as to be attached to a monitoring object together with a vibration sensor, and the processing unit is generated in the monitoring object based on a sensor signal of the vibration sensor. A data recording device that detects the vibration level at predetermined time intervals and stores the detected vibration level and the detection time of the level specified based on the time data in the storage unit;
An operation including a determination unit that compares the level stored in the storage unit with a preset threshold and determines that the monitoring target is operating when the level is equal to or higher than the threshold. Monitoring device.   The operation monitoring device according to claim 3 or 4, wherein the determination unit calculates a time when the level is equal to or greater than the threshold as an operation time.   The operation monitoring apparatus according to claim 5, wherein the determination unit calculates an operation rate of the monitoring object based on the operation time.

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