JPH0664116U - Automatic recorder for dynamic characteristics of overhead lines - Google Patents

Abstract

(57) [Summary] [Purpose] With regard to the recorder for dynamic characteristics of overhead lines, train detectors are not required, data can be recorded normally regardless of data measurement conditions, and data input processing is labor-saving. The purpose is to do. A CPU that determines the approach of a train based on the detected push-up amount or strain of the trolley wire 1 and records the data when the push-up amount or strain exceeds a predetermined value.
27 and a RAM for recording data processed by the CPU 27
A card 30, a switch means 28 for operating the CPU 27 only in the measurement time zone, and a clock means 29 for setting the measurement time zone are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dynamic characteristic automatic recorder for overhead lines that detects and automatically records the amount of push-up and distortion of a trolley wire pushed up by a pantograph as a train passes.

[0002]

[Prior art]

 When increasing the speed of trains, the problems with overhead lines are the amount of push-up and strain on the trolley wire. If the push-up amount of the trolley wire becomes too large, the pantograph will come into contact with the overhead wire fittings and damage the overhead wire fittings and the pantograph. Further, if the strain of the trolley wire exceeds the metal fitting fatigue limit, there is a possibility of causing a trolley wire disconnection accident. Therefore, in order to improve the speed of trains, it is necessary to measure the push-up amount and strain of the trolley wire and whether these values exceed the allowable values.

As such measuring means, a dynamic characteristic automatic recorder for overhead lines is used. The conventional dynamic characteristic automatic recorder for overhead lines will be described with reference to FIGS. 4 and 5. In FIGS. 4 and 5, reference numeral 1 is a trolley wire, and the trolley wire 1 is hung by a large number of hangers 3 or droppers hanging from a suspension wire 2 and is laid substantially horizontally. The suspension overhead wire 2 is supported by, for example, a horizontal beam 4 as an overhead wire support structure, and both ends of the horizontal beam 4 are supported by columns 6 via insulators 5.

A movable bracket 7 is connected to the horizontal beam 4, and the movable bracket 7 is connected to the support column 6 via an insulator 8. A push-up amount detector for detecting the push-up amount of the trolley wire 1, for example, a displacement sensor 10 is installed between the trolley wire 1 and the horizontal beam 4. The displacement sensor 10 may be a known rotary type, and its electric resistance changes according to the amount of pushing up of the trolley wire 1.

Further, the trolley wire 1 is provided with a strain detector for detecting strain, for example, a strain gauge 11. Although not shown, the strain gauge 11 includes a well-known bridge circuit so that a change in resistance due to strain of the strain gauge 11 can be taken out as an electric signal. A pen recorder 20 and a battery 21 are attached to the horizontal beam 4. The pen recorder 20 is electrically connected to the displacement sensor 10 and the strain gauge 11, and operates using the battery 21 as a power source.

The pen recorder 20 records with a pen on recording paper (not shown) according to signals from the displacement sensor 10 and the strain gauge 11. A timer 23 is provided between the battery 21 and the pen recorder 20, and the pen recorder 20 can be operated by using the battery 21 as a power source at a predetermined measurement time set in the timer 23.

However, between the timer 23 and the pen recorder 20, a train detection type switch 24 that detects the approach of a train and operates is electrically connected. The train detection switch 24 opens and closes an electric circuit by the operation of a train detector 25 installed on the movable bracket 7, as shown in FIG. 4, for example. The train detector 25 is composed of, for example, a light sensor, and turns on the train detection type switch 24 when the front of the train approaches to about 2 to 3 m. As a result, the pen recorder 20 is connected to the battery 21, and the pen recorder 20 is started.

One to several seconds after the train detection type switch 24 is turned on, the pantograph of the train passes near the train detector 25 and pushes up the trolley wire 1 near the train detector 25. The operation of the dynamic characteristic automatic recorder of the overhead wire having such a configuration will be described. For example, the time at which the timer 23 starts is set before the train under measurement passes. Then, at this starting time, the signals sent from the displacement sensor 10 and the strain gauge 11 are amplified by the amplifier 22 and transmitted to the pen recorder 20.

However, the pen recorder 20 does not operate unless the train detection switch 24 is turned on. When a train approaches, the train detector 25 installed on the movable bracket 7 detects the train and turns on the train detection switch 24. As a result, the pen recorder 20 is electrically connected to the battery 21 and started. One to several seconds after the train detection type switch 24 is turned on, the pantograph of the train passes near the point where the push-up amount and strain of the trolley wire 1 are measured and pushes up the trolley wire 1. At this time, the displacement sensor 10 and the strain gauge 11 respectively measure the push-up amount and strain of the trolley wire 1 and send the measurement data to the pen recorder 20, so the pen recorder 20 records this measurement data.

According to such a conventional measuring apparatus, when the train detector 25 detects the approach of a train, the train detection type switch 24 is turned on and the pen recorder 20 is operated, so that automatic measurement is possible. Becomes

[0011]

[Problems to be solved by the device]

 However, in such a conventional overhead line dynamic characteristic automatic recorder, the train detector 25 installed on the movable bracket 7 is necessary in order to detect a train and start the pen recorder 20. However, as the speed of the train increases, the time from the front of the train passing to the arrival of the pantograph becomes shorter, so the pantograph passes before the pen recorder 20 operates.

Therefore, in order to operate the pen recorder 20 before the arrival of the pantograph, it is necessary to install the train detector 25 on the movable bracket 7 about 50 m before, and the device becomes complicated. Further, the above-mentioned conventional overhead line dynamic characteristic automatic recorder requires the pen recorder 20 for recording the measurement data. However, although the pen recorder 20 uses a recording paper, this recording paper causes a paper jam when the humidity is high, so that there is a disadvantage that the measurement data is not normally recorded under the measurement condition that the humidity is high.

Further, it is necessary to key in data from the recording paper to the personal computer. The present invention has been made in view of such a conventional problem, and a train detector is not necessary because the approach of a train is determined by using the push-up amount or strain of the trolley wire. It is an object of the present invention to provide an overhead line dynamic characteristic automatic recorder that can normally record data regardless of measurement conditions and that can save labor in inputting data.

[0014]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is directed to a dynamic characteristic automatic recorder of an overhead wire which detects the pushing amount and the strain of the trolley wire 1 by the detectors 10 and 11 and automatically records the detected amount. A CPU 27 that processes the approach of the train based on the pushed-up amount of the trolley wire 1 and records the data when the pushed-up amount exceeds a predetermined value, and a RAM that records the data processed by the CPU 27. It is characterized by comprising a card 30, a switch means 28 for operating the CPU 27 only during the measurement time zone, and a clock means 29 for setting the measurement time zone.

Further, in the present invention, the CPU 27 determines the approach of a train based on the strain of the trolley wire 1 detected by the detector 11, and processes the data when the strain exceeds a predetermined value. It is characterized by Further, the present invention is characterized in that the data recorded in the RAM card 30 is taken into the personal computer 32 through the interface circuit 31 and the data is displayed and stored in the personal computer 32.

[0016]

[Action]

 According to the dynamic characteristic recorder for overhead line dynamic characteristics of the present invention having such a configuration, the approach of a train is determined based on the amount or strain of the trolley wire 1 detected by the detectors 10 and 11, and the train is pushed up. When the amount or strain exceeds a predetermined value, the data is recorded, so the conventional train detector is not required and the device is simplified.

Further, since the data of the push-up amount or the distortion is recorded in the RAM card 30, the measurement data is not normally recorded due to the paper jam under the measurement condition of high humidity like the conventional example using the recording paper. The data can be recorded normally regardless of the measurement conditions. Further, since the data recorded in the RAM card 30 is taken into the personal computer 32 via the interface circuit 31, the data can be directly converted into a required format, and the data can be read from the recording paper as in the conventional case. Therefore, it is not necessary to input keys to a personal computer, and labor can be saved.

[0018]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an embodiment of the present invention. The same numbers are used for the same components as the conventional ones, and detailed description thereof is omitted.

That is, in FIG. 2, 1 is a trolley wire, 2 is a suspension wire, 3 is a hanger or a dropper, 4 is a horizontal beam as an overhead wire supporting structure having the same potential as the trolley wire 1, 5 is an insulator, and 6 Is a pillar, 7 is a movable bracket, 8 is an insulator, and 21 is a battery. Further, 10 is a displacement sensor as a detector for detecting the push-up amount of the trolley wire 1, and 11 is a strain gauge as a detector for detecting the strain of the trolley wire 1.

A recording unit 26 and a battery 21 similar to the conventional one are attached to the horizontal beam 4. The recording unit 26 is electrically connected to the displacement sensor 10 and the strain gauge 11, and operates by using the battery 21 as a power source. As shown in FIG. 1, the recording unit 26 includes a CPU 27, a switch 28 as a switch unit, It is composed of a timer 29 and a RAM card 30 as a time measuring means.

The signals sent from the displacement sensor 10 and the strain gauge 11 are processed by the CPU 27 and recorded in the RAM card 30. That is, the CPU 27 has an A / D conversion unit and a discrimination unit, and after the signal sent from the displacement sensor 10 and the strain gauge 11 is converted into a digital signal by the A / D conversion unit, the discrimination unit pushes up. Alternatively, it is determined whether or not the strain exceeds a predetermined value. When the strain exceeds the predetermined value, it is determined that the train is approaching and the data is output to the RAM card 30.

When the push-up amount or strain of the trolley wire 1 exceeds a predetermined value, the data is recorded because the vertical displacement of the trolley wire 1 due to a change in temperature is due to strain and approach of a train. This is to distinguish it from the one. The CPU 27 and the battery 21 are connected via a switch 28, and this switch 28 is driven by a timer 29.

That is, the timer 29 is set according to the time zone in which the train passes, and the switch 28 is closed when the measured time zone is reached. As a result, the CPU 27 is operated only in the measurement time zone. The CPU 27, the switch 28, the timer 29, and the RAM card 30 may be known ones.

After recording the data on the RAM card 30, as shown in FIG. 3, the RAM card 30 is taken out from the recording unit 26, inserted into the interface circuit 31, and taken into the personal computer 32. In the conventional example, it was necessary to read the data from the recording paper and key in the personal computer, but in the present embodiment, the data is directly input to the personal computer 32, and the personal computer 32 displays and saves the data.

The interface circuit 31 and the personal computer 32 may be known ones. The operation of the automatic recorder having such a configuration will be described. For example, the timer 29 is set so that the switch 28 is turned on during the time period when the train to be measured passes, and the switch 28 is turned off and the battery 21 and the CPU 27 are not connected except during this time period. Save battery capacity.

The CPU 27 operates when the switch 28 is turned on, but does not record the push-up amount and strain data of the trolley wire 1 in the RAM card 30 when the train does not come. Data is recorded in the RAM card 30 only when the pan tag is approaching and the amount of push-up of the trolley wire 1 exceeds a certain level. However, the vertical displacement of the trolley wire 1 due to a change in temperature is not recorded in the RAM card 30. The determination of the approach of this train can be made similarly by using the strain of the trolley wire 1.

After recording a predetermined amount of data on the RAM card 30, the RAM card 30 is removed from the recording unit 26, inserted into the interface circuit 31, and the data is taken into the personal computer 32. Necessary data processing is performed by the personal computer 32. As described above, in the present embodiment, the approach of the train is determined based on the push-up amount or the strain of the trolley wire 1 and the data is recorded. Therefore, the conventional train detector 25 is not required, and the device is It will be easy.

Further, since the data sent from the displacement sensor 10 and the strain gauge 11 is recorded in the RAM card 30, when the recording paper is used, as in the conventional example, when the recording paper is moist, It is possible to record the data normally regardless of the measurement conditions, because the measurement data cannot be normally recorded under the measurement conditions of clogging and high humidity.

Further, since the data of the RAM card 30 is taken into the personal computer 32 via the interface circuit 31, it is not necessary to read from the recording paper and input the key to the personal computer 32 as in the conventional example, which saves labor. Can be achieved.

[0030]

[Effect of device]

 As described above, according to the present invention, the trolley wire push-up amount or the strain measurement value itself is used to detect the approach of a train, so that it is necessary to separately provide a train detector for detecting the approach of a train. Since it does not exist, the device becomes simple. In addition, since the data is recorded in the RAM card, it is possible to always record without causing paper jam due to moisture unlike a pen recorder.

Further, since the data is taken in by the personal computer, the data can be converted into a required format as it is, and it is not necessary to read the data from the recording paper and input the key to the personal computer, which saves labor.

[Brief description of drawings]

FIG. 1 is an explanatory view of main parts showing an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an automatic recorder for dynamic characteristics of overhead lines.

FIG. 3 is a block diagram showing reading of data.

FIG. 4 is a diagram showing the configuration of a conventional dynamic characteristic automatic recorder for overhead lines.

FIG. 5 is a block diagram showing a configuration of a conventional electric circuit.

[Explanation of symbols]

 1: Trolley wire 2: Suspended wire 3: Hanger 4: Horizontal beam 5: Insulator 6: Strut 7: Movable bracket 8: Insulator 10: Displacement sensor (detector) 11: Strain gauge (detector) 21: Battery 26: Recording Part 27: CPU 28: Switch (switch means) 29: Timer (timekeeping means) 30: RAM card 31: Interface circuit 32: Personal computer

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshio Shindo 3-20-6 Nishi-Shinagawa, Shinagawa-ku, Tokyo Tojo Measuring Instruments Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A dynamic recorder for the dynamic characteristics of an overhead wire which detects the amount of push-up and strain of a trolley wire by a detector and automatically records the approaching distance of a train based on the amount of push-up of the contact wire detected by the detector. A CPU for determining and recording the data when the push-up amount exceeds a predetermined value, a RAM card for recording the data processed by the CPU, and a switch means for operating the CPU only during the measurement time zone. And a dynamic characteristic automatic recorder for overhead contact lines, which is provided with a clocking means for setting the measurement time zone. 2. The CPU determines the approach of a train based on the strain of the trolley wire detected by the detector, and when the strain exceeds a predetermined value, the CPU records the data. An automatic recorder of the dynamic characteristics of the overhead line of Item 1. 3. The dynamic characteristics of the overhead line according to claim 1 or 2, wherein the data recorded in the RAM card is taken into a personal computer through an interface circuit, and the data is displayed and stored by the personal computer. Automatic recorder.