JP2013135569A - Master controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for downsizing a master controller so as to arrange the master controller in and around the motorman's cab of a train which has only limited space.SOLUTION: A master controller includes: a main handle 2 which rotates around a rotating shaft 4; and an optical rotary encoder 1 which outputs a notch command corresponding to a turning angle position of the main handle. Thus, a control board which converts a conventional code signal (angle information) into the notch command becomes unnecessary. The master controller can be downsized, weight is reduced, and a failure rate can be lowered by reduction of components.

Description

  The present invention relates to a master controller that transmits a speed command of an electric railway vehicle.

  The master controller is generally provided with a notch handle (hereinafter referred to as a main handle) for the driver to adjust the acceleration / deceleration of the vehicle. The vehicle performs acceleration / deceleration operation according to the rotational position of the main handle. A master controller that uses an absolute rotary encoder (hereinafter referred to as an absolute encoder) as a rotational position detection device for the main handle is known. Such a master controller is called a contactless master controller because it optically detects the rotation angle of the main handle. This contactless master controller outputs a code corresponding to the rotation angle of the main handle. This code is, for example, binary format data or gray code format data indicating a binary number.

  The code output from the absolute encoder is converted into a notch command by calculating a notch in the control device. The notch command is directly transmitted to the motor drive device and the brake device, or is transmitted to a transmission device that performs command transmission to these devices.

  FIG. 5 is a schematic configuration diagram of a conventional contactless master controller.

  The rotation shaft of the main handle 2 and the rotation shaft 4 of the absolute encoder 11 are mechanically connected. When the main handle 2 is operated, the angle information from the absolute encoder 11 is converted into a code signal 10 according to the rotation position (notch). Is output. This code signal 10 indicates the absolute angular position of the main handle 2. For example, in the case of 8-bit binary format, the value is "00000001 (= 01H)", "00000010 (= 0H)", etc. Can be expressed as

  The code signal 10 from the encoder 11 is input to the control board 3 having a control circuit. The control board 3 converts the code signal 10 (angle information) input from the encoder into a notch command 5 and outputs it. The notch command 5 is, for example, a signal having 5 stages, that is, a resolution of “5”, and is transmitted by 5 signal lines or 3 lines (3 bits) in the binary format.

  FIG. 6 is a diagram showing an example of a cam pattern of a notch command. Here, a code (angle information) output from the encoder 11 will be described as a binary code, and a case where a notch command output from the control board 3 is transmitted through five signal lines will be described.

  For example, a numerical value in the range of 00H-60H is transmitted to the control board 3 as a code from the encoder 11. Here, it is assumed that the encoder 11 outputs the code 00H when the main handle 2 is at the angular position P2 tilted to the rightmost side. The control board 3 converts this code into a notch command. For example, the control board 3 converts the code CN inputted when the main handle 2 is at the angular position (vertical position) N in the figure into a notch command “00100” and outputs it. When the main handle rotates from here to the position of P1, for example, in the right direction, the input code changes to CP1. The control board 3 converts the code CP1 into a notch command “11000” and outputs it.

JP-A-5-244707 JP-A-7-059213

  In the contactless master controller described above, a control board for converting the code (angle information) output from the encoder into a notch command is required to output the notch command to the drive device and the brake device. This control board converts the code output from the encoder into a notch command by calculation or by referring to a code / notch command conversion table or the like previously stored as a database. As described above, a space for arranging the control board around the cab having only a limited space is required.

  Therefore, the main object of the embodiment is to reduce the size of the master controller.

  One embodiment is a main controller for a train, and includes a main handle that rotates about an axis, and an optical rotary encoder that outputs a notch command corresponding to the rotation angle position of the main handle.

1 is a schematic configuration diagram of a contactless master controller according to a first embodiment. It is a figure which shows the internal structure of the cam pattern encoder 1 which concerns on 1st Embodiment. It is a figure which shows the internal structure of the cam pattern encoder 1 which concerns on 2nd Embodiment. It is a figure which shows the slit disk 12 applied to the master controller which concerns on 3rd Embodiment. It is the structure schematic of the conventional non-contact main controller. It is a figure which shows an example of the cam pattern of a notch command.

  Hereinafter, a master controller according to an embodiment will be described with reference to the drawings.

[First embodiment]
FIG. 1 is a schematic configuration diagram of a contactless master controller according to the first embodiment.

  This contactless master controller uses an encoder having a slit disk provided with a slit similar to a cam pattern of a notch command.

  The rotation shaft of the main handle 2 and the rotation shaft 4 of the cam pattern rotary encoder (hereinafter referred to as cam pattern encoder or simply encoder) 1 are mechanically fixed, and when the main handle 2 is operated, its rotation position (notch) In response to this, a notch command 5 is output. At this time, the cam pattern rotary encoder is an optical rotary encoder.

  As described above, the contactless master controller according to the present embodiment is not provided with a control board that converts the code (angle information) from the encoder into a notch command, as in the related art. FIG. 2 is a diagram showing a configuration of the slit disk 12 provided in the cam pattern encoder 1 and the vicinity of the slit disk 12.

  FIG. 2A is a front view of the slit disk 12. Thus, the slit disk 12 is provided with the slits 3 (S1-S5) corresponding to the notch command. The slit 3 has a pattern corresponding to the conventional cam pattern shown in FIG.

  FIG. 2B is a diagram showing a schematic configuration in the vicinity of the slit disk 12, and is a diagram when the slit disk 12 is viewed from the side.

  A plurality of LED light emitters 6 are provided on the left side of the slit disk 12 in the drawing, and five phototransistors (hereinafter referred to as “phototransistors”) are provided on the right side corresponding to the radial positions of the slits S1 to S5 of the slit disk 12, respectively. 7a-7e are provided. Output signals of the light receiving elements 7a-7e are output to the outside of the encoder 1 through amplifiers (signal amplifiers) 8a-8e. Thus, the signal quality (S / N) of the notch signal is ensured by amplifying the output signal of the light receiving elements 7a-7e using the amplifier 8.

  Here, it is assumed that the light receiving elements 7a-7e are arranged vertically along the radius RN in FIG. The positions of the light receiving elements 7a-7e are fixed, and the slit disk 12 rotates about the shaft 4 with the rotation of the main handle. In the case of this figure, the LED light is transmitted through the slit S3, and only the light receiving element 7c outputs an H level signal. As a result, the signal output from the cam pattern encoder 1 is “00100” corresponding to the output of the light receiving elements 7a-7e and is output as the notch signal N. When the main handle rotates to the right from here, the radius RP1 is positioned in the vertical direction, the LED light is transmitted through the slits S4 and S5, and the light receiving elements 7d and 7e output H level signals. As a result, the signal output from the cam pattern encoder 1 becomes “00011” corresponding to the output of the light receiving elements 7a-7e, and is output as the notch signal P1. Since the notch signals P2, P1, N, B1, B2, and EB output in this way have the same signal format as the conventional one, they can be directly applied to the conventional system.

  As described above, the cam pattern encoder 1 according to the embodiment directly outputs a notch signal instead of outputting a code signal indicating rotation angle information as in the prior art. Therefore, a control board for converting a conventional code signal (angle information) into a notch command is not required, and the master controller can be reduced in size and weight, and the failure rate can be reduced by reducing the number of parts.

[Second Embodiment]
FIG. 3 is a diagram showing an internal configuration of the cam pattern encoder 1 according to the second embodiment.

  In addition to the first embodiment shown in FIGS. 1 and 2, the cam pattern encoder 1 includes an error detection code adding unit 9 that adds an error detection code (for example, a parity bit) to the notch signal output from the light receiving elements 7a-7e. Have. By outputting the error detection code together with the notch command as an output signal, it is possible to detect an error in the notch signal on the drive device and brake device side that receives the notch command from the master controller.

[Third embodiment]
FIG. 4 is a diagram showing a slit disk 12 applied to the master controller according to the third embodiment.
This embodiment is an example in which a strobe bit is added as a timing for reading a notch pattern. The slit disk 12 is provided with slits ST1-ST6 on the outermost peripheral side corresponding to the notch positions P2, P1, N, B1, B2, and EB in the disk.

  The slits ST1 to ST6 are provided to generate a timing signal (for example, a strobe signal) for taking in the notch command described in the first embodiment and the notch command including the error detection signal described in the second embodiment. A light receiving element (not shown) for receiving the LED light transmitted through the slits ST1-ST6 and an amplifier (not shown) for amplifying and outputting the light receiving element output signal are further provided.

  On the drive device and brake device side, when this timing signal is at the H level, the notch command is taken in, so that the notch command can be received accurately.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Cam pattern encoder, 2 ... Main handle, 3 ... Control board, 6 ... LED, 7a-7e ... Photodiode, 8a-8e ... Signal amplifier, 11 ... Absolute rotary encoder, 12 ... Slit disk.

Claims (6)

A master controller for trains,
A main handle that rotates about an axis;
An optical rotary encoder that outputs a notch command corresponding to the rotational angle position of the main handle;
A master controller comprising: The optical rotary encoder is
A slit disk that rotates with the rotation of the main handle and has a plurality of slits;
A light emitting means for irradiating the slit disk with light;
A plurality of light receiving means for receiving the light transmitted through the slit, and the slit receives the notch command so that a notch command corresponding to a rotation angle position of the main handle is generated from the plurality of light receiving means. 2. The master controller according to claim 1, wherein the master controller has a corresponding pattern.   3. The master controller according to claim 1, wherein the optical rotary encoder includes means for adding an error detection code to notch commands generated from the plurality of light receiving means.   3. The master controller according to claim 1, wherein the slit disk is provided with a slit for generating a strobe signal for providing a notch command capturing timing to a notch command receiving side device. .   3. The master controller according to claim 1, wherein the optical rotary encoder includes amplification means for amplifying a signal output from the light receiving means.   3. The master controller according to claim 2, wherein the optical rotary encoder includes amplification means for amplifying an output signal of the light receiving means.

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