JP3392306B2 - Measuring device for traveling characteristics of transfer body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling characteristic measuring device for a transporting body for measuring the traveling characteristic of a transporting body which is a basis for maintaining a good riding comfort of an elevator or other transporting body.

[0002]

2. Description of the Related Art Transporters such as elevators, escalators, moving walkways, etc. are devices for moving passengers. Therefore, if a failure occurs in the devices, the passengers will be greatly inconvenienced and, in some cases, a great risk. is there. In addition, if the transport body is not comfortable to ride, not only passengers will feel uncomfortable but also anxiety. Normally, it is necessary to regularly perform maintenance on the above-mentioned transfer body to ensure safety, and this maintenance is performed by specialized maintenance personnel, and many items are checked. It is indispensable to measure the acceleration and the moving speed of a transfer body that is involved in discomfort and anxiety.

Conventionally, for example, for measuring the acceleration and speed of an elevator, as described in Japanese Patent Laid-Open No. 3-195678, vertical, front-rear, and left-right accelerations during traveling are simultaneously detected in the elevator car. By installing three acceleration sensors and a recording unit that records the detection values of the acceleration sensors, the elevator car is run to detect each acceleration, and the acceleration data in the vertical direction is integrated to determine the speed. Was being measured. Further, the obtained speed data is further integrated to obtain distance data, and the acceleration data, the speed data, and the distance data are displayed on the display unit with the horizontal axis as the time axis, and the ride comfort of the elevator is displayed based on this display. I was judging the quality. Furthermore, Japanese Patent Application No. 8-
In the No. 1, one acceleration sensor housed in a box is used in place of the three acceleration sensors, and the box is installed in the installation direction (horizontal installation, vertical installation, etc.) according to the transfer direction of the transfer body. Has been proposed to detect the acceleration, and then to perform the same processing as described above.

[0004]

By the way, in the acceleration sensor, the detection value changes depending on the surrounding environment (atmospheric pressure, temperature, etc.), and the output continuously increases even when the acceleration sensor is in the zero acceleration state. Go on. This is shown in FIG. FIG. 5 is an output characteristic diagram of the acceleration sensor. In this figure, the horizontal axis represents time and the vertical axis represents the output of the acceleration sensor. acceleration
Even if the state of 0 continues, the output of the acceleration sensor increases linearly as shown in the figure, and even if the output is corrected to zero at time t ₀ , the output linearly increases again. Do it. That is, the detection error of the acceleration sensor increases according to a linear function.

Due to such characteristics of the acceleration sensor, in the above-mentioned conventional means for obtaining the speed by integrating the output of the acceleration sensor, since the integration is performed, the detection error of the acceleration sensor increases in accordance with a quadratic function. This is shown in FIG. FIG. 6 is a characteristic diagram of the speed error. In this figure, the horizontal axis is the measurement time,
The vertical axis shows the magnitude of speed error. As is clear from the figure, the velocity error increases as a quadratic function over time.

Normally, the output error of the acceleration sensor shown in FIG. 5 and the speed error shown in FIG. 6 are influenced by the warm-up time after the acceleration sensor is powered on. This is shown in FIG. FIG. 7 is a characteristic diagram of speed error. In this figure, the horizontal axis represents the measurement time and the vertical axis represents the velocity error. A ₁ , A ₂ , and A ₃ show velocity error curves, and curve A ₁
Shows a characteristic when the warm-up time is short, a curve A ₃ shows a characteristic when the warm-up time is long, and a curve A ₂ shows a characteristic when the warm-up time is between the two. As is clear from this characteristic diagram, the longer the warm-up time after turning on the power, the smaller the speed error.

In order to avoid a measurement error due to the acceleration sensor, a maintenance worker is required to warm up the acceleration sensor when measuring acceleration, speed and distance.
However, since this warm-up is left to the discretion of each maintenance person, some maintenance personnel often perform measurement in a very short warm-up time, and the measured value often includes a large measurement error. In addition, the warm-up time for the same measurement target varies considerably depending on the measurer, which may cause variations in the measurement values for each measurement. For example, when the elevator is inspected every predetermined period, if the measurer is different for each inspection and the warm-up time is different, the measured values will vary from inspection to inspection, and the measured values will change to worse ones. If the elevator is in the normal state, it may be erroneously determined that there is an abnormality in one of the elevators, and if it is the other way around, there is a risk of missing the sign of the elevator abnormality.

An object of the present invention is to solve the above-mentioned problems in the prior art and to provide a traveling characteristic measuring device for a transfer body which can reliably obtain reliable measurement data.

[0009]

In order to achieve the above-mentioned object, the invention of claim 1 is a traveling characteristic measuring device for a transporting body, wherein the traveling characteristic of the transporting body is measured by using an acceleration sensor. A warm-up time setting means for setting a warm-up time of the acceleration sensor, and a display device or an audio device for notifying the warm-up time after the power of the acceleration sensor is turned on are provided.

According to a second aspect of the present invention, in a traveling characteristic measuring device for a moving body, which uses an acceleration sensor to measure a traveling characteristic in a moving direction of the moving body, a warm-up time for setting a warm-up time of the acceleration sensor. Setting means,
Time subtraction means for counting down the warm-up time set by the warm-up time setting means when the power of the acceleration sensor is turned on, and a display device for displaying the warm-up remaining time counted down by the time subtraction means. And is provided.

According to a third aspect of the present invention, in a traveling characteristic measuring device of a transfer body for measuring traveling characteristics of a moving body using an acceleration sensor, a warm-up time for setting a warm-up time of the acceleration sensor. Setting means,
When the power of the acceleration sensor is turned on, the time addition means for counting up to the warm-up time set by the warm-up time setting means and the warm-up time counted by the time addition means are displayed. And a display device for displaying the set warm-up time when the set warm-up time is reached.

According to a fourth aspect of the present invention, in the traveling characteristic measuring device of the third aspect of the present invention, there is provided an acoustic device which outputs sound when the warm-up time set by the warm-up time setting means is reached. It is characterized by being provided.

According to a fifth aspect of the present invention, in the traveling characteristic measuring device for a transfer body according to the first to fourth aspects, when the zero point correction command or the measurement start command is input during the warm-up time, these are input. It is characterized in that a command invalidating means for invalidating the command is provided.

According to a sixth aspect of the present invention, in the traveling characteristic measuring device of the fifth aspect of the present invention, there is provided command invalidity notifying means for notifying when the command invalidating means operates by a display device or a sound device. It is characterized by

Further, in the invention of claim 7, in the traveling characteristic measuring device for a transfer body according to any one of claims 1 to 6, when the processing of the data stored in the storage means is instructed during the warm-up time. Data processing means for executing the processing of the data using the display device is provided.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described based on the illustrated embodiments. FIG. 1 is a block diagram of an elevator traveling characteristic measuring device according to an embodiment of the present invention. In this figure, 10 is a measuring device installed in the elevator car. The measuring device 10 includes an acceleration sensor 11, a voltage / frequency converter 12, a counter 13, and an A / D converter 1.
4. Operation control unit 15 including a microcomputer
Composed of. The arithmetic control unit 15 includes a central processing unit (CPU) 151 and a CPU 151 that perform necessary arithmetic and control.
Read-only memory (ROM) that stores the processing procedure
152, a random access memory (RAM) 153 for storing results of calculation and control, a clock 154, a data memory 155 for storing past measurement data and the like, an input circuit 156 for processing input of signals from various switches,
An input / output interface 157 for communicating with the outside, a command input switch 161a for inputting various commands, a measurement switch 162 for outputting a command signal for starting and ending a measurement, a warm-up time setting switch 161b for setting a warm-up time. A zero correction switch 163 that outputs a command signal that commands the correction of the zero point of the acceleration sensor, a data display switch 164 used for displaying data, and a display unit 170.

As is well known, the voltage frequency converter 12 is composed of an integrator, a comparator and an output transistor. The input voltage is integrated by the integrator, and the output from the integrator is sawtoothed by the comparator. As a result of this comparison, a pulse having a frequency proportional to the voltage from the integrator is output from the output transistor, counted by the counter 13, and output to the arithmetic control unit 15. Further, the A / D converter 14 converts the acceleration detected by the acceleration sensor into a digital value proportional to the acceleration, and outputs the digital value to the arithmetic control unit 15.

FIG. 2 is a top view of the measuring device 10 shown in FIG.
FIG. 3 is a side view seen from the direction of arrow III shown in FIG.
In these figures, the same parts as those shown in FIG. 1 are designated by the same reference numerals. A key switch 161 includes a large number of keys. Although the command input switch 161a and the warm-up time setting switch 161b are shown separately in FIG. 1 for easy understanding, they are actually constituted by the key switch 161. By operating the selected key of the key switch 161, various commands are input and the warm-up time is set.
Reference numeral 180 denotes a storage case. In the storage case 180, the acceleration sensor 11 and the voltage frequency converter 1 shown in FIG.
2, counter 13, A / D converter 14, arithmetic control unit 1
5 and a battery (not shown) are stored. 18
Reference numeral 1 indicates a power switch. A connector 182 for data communication with an external device is connected to the input / output interface 157 inside the storage case 160. 1
Reference numeral 83 denotes a display lamp for displaying ON / OFF of each switch, and 184 denotes a plurality of feet provided on the bottom surface. 164
U and 164D are display feed switches used together with the data display switch 164, and their functions will be described later.

Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG. The maintenance person or the administrator sets a predetermined warm-up time in advance by using the warm-up time setting switch 161b (key switch 161 shown in FIG. 2). The set warm-up time is stored in the RAM 153, for example. At the time of measurement, the maintenance staff installs the storage case 180 at a predetermined location of the measurement target and turns on the power switch 181. CPU 151
Always checks whether or not the power is turned on (step S ₁ shown in FIG. 4), and when the switch 181 is turned on, starts measuring the warm-up time based on the clock signal of the clock 153 (step). S ₂ ). Then, the measured warm-up time is subtracted from the set warm-up time to calculate the remaining time, which is displayed on the display unit 17
It is displayed at 0 (step S ₃ ). Next, it is judged whether or not there is an input of the 0 correction command or the measurement start command (step S ₄ ), and whether or not there is a command for processing various data (step S ₅ ). 0 hours left
Whether it is, i.e. provisions warm up it is determined whether or not completed (Step S _6), and displays the remaining time of the warm-up the process returns if not ended Step S _3, ends If so, the end is notified by sound or voice by a sound generator (not shown) or by displaying on the display unit 170 (step S ₇ ).

On the other hand, before the warm-up time has ended, when the maintenance staff issues an instruction for 0 correction or measurement start in order to perform measurement, the CPU 151 judges this by the processing of step S ₄ , and these instructions are input circuit 156. Input to the input circuit 156, the command is invalidated (step S ₈ ), the command invalidation is displayed on the display unit 170 (step S ₉ ), and the alarm sound is generated by the sound generator. Is output (step S ₁₀ ), and the instruction invalidation is notified, and then the process of step S ₆ is performed. Incidentally, the command disables may be performed only in either one of steps S _9, S _10.

Furthermore, maintenance personnel, if you want to do some processing by using the warm-up time, when entering the fact by a command input switches 161a (key switch 161 shown in FIG. 2), CPU 151 is a process flow S ₅ in addition to determine this, the state of the data display switch 164 determines whether it is necessary to display along with the command (Step S _11), prohibits the display of the remaining time when the display is required Te erases the remaining time displayed on the display unit 170 (Step S _12), to display the data along to the command to the display unit 170 (Step S _13), performs the subsequent necessary data processing (Step S ₁₄₎ . Then, when the processing end command is input, the processing is shifted to step S ₆ . In the case of processing that does not need to be displayed, the required processing is performed while the remaining time is displayed.

Here, to give an example of the above data processing,
For example, when the maintenance person wants to see past speed data, the maintenance person selects “speed data” with the key switch 161 and “what number data” of the past speed data, and the data display switch 164 is selected. Press, and finally press “Execute”. As a result, the CPU 151 performs the above processing, erases the remaining time displayed on the display unit 170, extracts the speed data selected from the data stored in the data memory 155, and displays it on the display unit. . In this case, the display of the speed data is the speed data for each sampling time. In this case, when the maintenance person presses the above-mentioned display feed switch 164U once, the data at the sampling time which is one ahead of the speed data stored in the data memory 155 is displayed.
When 4D is pressed once, the data of the sampling time after one is displayed, and display feed switch 164U (or 16
4D) is continuously pressed for a predetermined time (several seconds), the display unit 17
0, the speed data is sequentially (or in the reverse direction) along with the passage of time when the speed data of the data memory 155 is sampled.
It will be displayed continuously flowing. The data of a plurality of sampling times may be displayed simultaneously.

As described above, in the present embodiment, the warm-up time is set, and 0 correction and measurement start cannot be performed within that time, so that the specified warm-up time can be reliably ensured. Yes, you can make reliable measurements. Further, since the remaining time of warm-up is displayed, the maintenance staff can perform other work in accordance with the remaining time while considering the remaining time. Further, since various data can be displayed even during the warm-up time, the maintenance staff can refer to the necessary data even during the warm-up.

In the above description of the embodiment, an example of displaying the remaining warm-up time has been described.
The elapsed time of warm-up may be displayed. Further, the remaining time and the elapsed time of the warm-up are not necessarily displayed, and when the warm-up time ends, this may be displayed or notified by sound. Further, it is natural that the set time for warm-up can be changed to any time as required. Also, an example was described in which 0 correction during warm-up and invalidation of measurement start commands were described.
If the maintenance staff is informed that measurement will not be performed until the end of warm-up is displayed or sounded, it is not necessary to provide means for invalidating the zero correction and measurement start commands.
Also, an example in which means for processing various data during warming up is provided has been described, but such means is not always necessary. Further, in the above description of the embodiment, an example in which one acceleration sensor is used has been described, but it is obvious that the present invention is also applicable to the case where two or three acceleration sensors are used. Further, the measuring device shown in FIGS. 1 and 2 is installed at a predetermined position of the measuring object, and
A device provided with correction, measurement start / end, and other command command means and a display unit is provided at a place different from the above measurement device, and is also applicable to a system for wirelessly or wiredly exchanging data between them. The invention is naturally applicable.

[0025]

As described above, according to the present invention, the warm-up time is set, and when the set time is reached, this is notified, so that the specified warm-up time is surely secured. And reliable measurements can be made. Also, within the warm-up time, 0
By making the correction and the start of measurement impossible, the specified warm-up time can be completely ensured, and more reliable measurement can be performed.
Further, by displaying the remaining time of warm-up or the time until warm-up, the maintenance staff can perform other work in accordance with the remaining time while considering the remaining time. Further, since various data can be displayed even during the warm-up time, the maintenance staff can refer to the necessary data even during the warm-up.

[Brief description of drawings]

FIG. 1 is a block diagram of an elevator traveling characteristic measuring device according to an embodiment of the present invention.

FIG. 2 is a top view of the measuring apparatus shown in FIG.

FIG. 3 is a side view seen from the direction of arrow III shown in FIG.

FIG. 4 is a flowchart illustrating an operation of the device shown in FIG.

FIG. 5 is an output characteristic diagram of the acceleration sensor.

FIG. 6 is a characteristic diagram of speed error with respect to measurement time.

FIG. 7 is a characteristic diagram of velocity error with respect to measurement time.

[Explanation of symbols]

10 Measuring device 11 Accelerometer 12 Voltage frequency converter 13 counter 14 A / D converter 15 Arithmetic control unit

Front Page Continuation (72) Inventor Kaneo Tsukui 1-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building Systems Co., Ltd. (72) Inventor Kiyoshi Naganuma 1-6 Kandanishiki-cho, Chiyoda-ku, Tokyo Hitachi Building Systems, Ltd. In Service (72) Inventor Noriyuki Sabota 1-6 Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Building System Service Co., Ltd. (56) Reference JP-A-5-24753 (JP, A) JP-A-8-131507 (JP , A) JP-A-5-24752 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01P 15/00 B66B 1/24 B66B 3/00 B66B 5/00

Claims (7)

(57) [Claims] 1. A travel characteristic measuring device for a transport body for measuring a travel characteristic of a transport body in a moving direction using an acceleration sensor, and warm-up time setting means for setting a warm-up time of the acceleration sensor, and the acceleration sensor. And a sound device for notifying when the warm-up time has elapsed after the power supply of the power source was turned on. 2. A travel characteristic measuring device for a transport body for measuring a travel characteristic of a transport body in a moving direction using an acceleration sensor, and warm-up time setting means for setting a warm-up time of the acceleration sensor, and the acceleration sensor. Is provided with a time subtraction means for counting down the warm-up time set by the warm-up time setting means and a display device for displaying the remaining warm-up time counted by the time subtraction means. A traveling characteristic measuring device for a transfer body. 3. A travel characteristic measuring device for a transport body for measuring a travel characteristic of a transport body in a moving direction using an acceleration sensor, and warm-up time setting means for setting a warm-up time of the acceleration sensor, and the acceleration sensor. When the power is turned on, the time addition means for counting up to the warm-up time set by the warm-up time setting means, and the warm-up time counted up by the time addition means are displayed and set. A traveling characteristic measuring device for a transfer body, comprising: a display device for displaying a warm-up time when the warm-up time is reached. 4. The running characteristic measuring device for a transfer body according to claim 2, further comprising an acoustic device that outputs a sound when the warm-up time set by the warm-up time setting means is reached. A traveling characteristic measuring device for a transfer body. 5. The running characteristic measuring device for a transfer body according to claim 1, wherein when a zero point correction command or a measurement start command is input during the warm-up time, a command for invalidating these input commands. A traveling characteristic measuring device for a transfer body, which is provided with an invalidating means. 6. The traveling characteristic measuring device for a transporting body according to claim 5, further comprising a command invalidation notifying means for notifying when the command invalidating means is activated by a display device or an audio device. Driving characteristic measuring device. 7. The running characteristic measuring apparatus for a transfer body according to claim 1, wherein processing of the data stored in the storage means is instructed during the warm-up time,
A traveling characteristic measuring device for a transfer body, comprising data processing means for executing processing of the data using the display device.