JP3004985B1 - Point control type signal sorting device - Google Patents

Point control type signal sorting device

Info

Publication number
JP3004985B1
JP3004985B1 JP4419999A JP4419999A JP3004985B1 JP 3004985 B1 JP3004985 B1 JP 3004985B1 JP 4419999 A JP4419999 A JP 4419999A JP 4419999 A JP4419999 A JP 4419999A JP 3004985 B1 JP3004985 B1 JP 3004985B1
Authority
JP
Japan
Prior art keywords
frequency
signal
output
conversion circuit
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP4419999A
Other languages
Japanese (ja)
Other versions
JP2000238640A (en
Inventor
朝博 南雲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyosan Electric Manufacturing Co Ltd
Original Assignee
Kyosan Electric Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyosan Electric Manufacturing Co Ltd filed Critical Kyosan Electric Manufacturing Co Ltd
Priority to JP4419999A priority Critical patent/JP3004985B1/en
Application granted granted Critical
Publication of JP3004985B1 publication Critical patent/JP3004985B1/en
Publication of JP2000238640A publication Critical patent/JP2000238640A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Train Traffic Observation, Control, And Security (AREA)

Abstract

【要約】 【課題】簡単な構成で列車を制御するための情報量を増
やすとともに機器の調整作業や耐ノイズ性の向上を図
る。 【解決手段】車上子3が共振周波数fiの地上子と電磁
結合して共振すると、車上子3の2次側コイルから出力
している周波数f0〜fnの周波数スイープ信号のうち
周波数fiの信号レベルは大きくなる。位相弁別回路5
1は車上子3の2次側コイルから送られる周波数スイー
プ信号を復調して周波数fiの復調信号を出力する。バ
ンドパスフィルタ52は復調信号のノイズ成分を除去す
る。直流電圧変換回路53はノイズ成分を除去した復調
信号を周波数fiに応じた直流電圧に変換する。演算回
路54は直流電圧のレベルと周波数カウンタの値を判定
して共振周波数fiの地上子2を選別する。
Abstract: [PROBLEMS] To increase the amount of information for controlling a train with a simple configuration, and to improve equipment adjustment work and noise resistance. When a vehicle armature (3) electromagnetically couples with a ground armature having a resonance frequency (fi) to resonate, a frequency sweep signal of a frequency (f0 to fn) output from a secondary coil of the vehicle armature (3) has a frequency fi. The signal level increases. Phase discrimination circuit 5
1 demodulates a frequency sweep signal sent from the secondary coil of the upper armature 3 and outputs a demodulated signal of a frequency fi. The band pass filter 52 removes a noise component of the demodulated signal. The DC voltage conversion circuit 53 converts the demodulated signal from which noise components have been removed into a DC voltage corresponding to the frequency fi. The arithmetic circuit 54 determines the level of the DC voltage and the value of the frequency counter to select the ground terminal 2 having the resonance frequency fi.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は列車の停止制御や
踏切制御等の各種制御に使用される地上子を使用した点
制御式信号選別装置、特に車上装置の構成の簡略化に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a point control type signal selection device using a grounding element used for various controls such as a train stop control and a railroad crossing control, and more particularly to simplification of the configuration of an on-board device. .

【0002】[0002]

【従来の技術】自動列車停止装置としては、図4に示す
ように、車上装置として車上子3のコイルを帰還回路と
した増幅器6による常時発振周波数fの発振回路を設
け、地上装置には一定周波数f1の共振回路からなる地
上子2を設け、走行している列車の車上子3が地上子2
の上を通るときに、発振回路の常時発振周波数fが地上
子2に設定された共振回路の周波数f1に変周して列車
に停止指令を出し、一定時間以内に確認扱いをしないと
きには、自動的に非常ブレ−キにより列車を停止させる
ATS−S形が広く実用化されている。また、地上子を
検出する方法として高速フ−リエ変換を用いた方法も開
発されている。
2. Description of the Related Art As an automatic train stopping device, as shown in FIG. 4, an oscillation circuit having a constant oscillation frequency f is provided as an on-board device by an amplifier 6 having a coil of an on-board member 3 as a feedback circuit. Is provided with a grounding element 2 composed of a resonance circuit having a constant frequency f1.
When passing over the train, the constant oscillation frequency f of the oscillation circuit fluctuates to the frequency f1 of the resonance circuit set on the grounding element 2 and issues a stop command to the train. The ATS-S type which stops a train by emergency braking is widely put into practical use. Further, a method using a fast Fourier transform has been developed as a method for detecting a ground child.

【0003】[0003]

【発明が解決しようとする課題】上記従来の変周式の自
動列車停止装置において、列車を制御するための情報量
を増やすためには情報に対応した周波数毎に周波数選別
器を取り付けて周波数を増やす必要があった。しかしな
がら各周波数毎に周波数選別器を取り付けると、自動列
車停止装置の小型化が困難であるとともに機器の調整作
業や耐ノイズ性の向上が困難であった。
In the above-mentioned conventional variable-speed automatic train stop device, in order to increase the amount of information for controlling the train, a frequency selector is attached to each frequency corresponding to the information to reduce the frequency. We needed to increase it. However, if a frequency selector is attached for each frequency, it is difficult to reduce the size of the automatic train stopping device, and it is also difficult to adjust the equipment and improve the noise resistance.

【0004】また、高速フ−リエ変換を用いて地上子を
検出するためには、走行している列車と地上子とが結合
している時間が短いため高速な演算を行う必要があり、
簡単な構成で実現することは困難であった。
Further, in order to detect a ground child using the high-speed Fourier transform, it is necessary to perform high-speed calculations because the time during which the running train and the ground child are coupled is short.
It was difficult to realize with a simple configuration.

【0005】この発明はかかる短所を改善するためにな
されたものであり、簡単な構成で列車を制御するための
情報量を増やすとともに機器の調整作業や耐ノイズ性の
向上を図ることができる点制御式信号選別装置を提供す
ることを目的とするものである。
The present invention has been made in order to improve such disadvantages, and it is possible to increase the amount of information for controlling a train with a simple configuration, and at the same time, it is possible to adjust equipment and improve noise resistance. It is an object of the present invention to provide a control-type signal sorting device.

【0006】[0006]

【課題を解決するための手段】この発明に係る点制御式
信号選別装置は、車上装置と地上子とを有し、車上装置
は車上子と変調部及び復調部を有し、変調部はプログラ
マブルカウンタと信号変換回路と電力増幅器を有し、プ
ログラマブルカウンタは周波数f0〜fnのパルスを一
定周期で順次出力し、信号変換回路はプログラマブルカ
ウンタから出力する周波数f0〜fnのパルスを周波数
f0〜fnの周波数スイープ信号に変換し、電力増幅器
は信号変換回路から出力された周波数スイープ信号を増
幅して車上子に出力し、復調部は位相弁別回路とバンド
パスフィルタと直流電圧変換回路及び演算回路を有し、
位相弁別回路は変調部の信号変換回路から出力された周
波数スイープ信号を使用して車上子の出力信号を復調
し、バンドパスフィルタは位相弁別回路から出力される
復調信号からノイズ成分を除去し、直流電圧変換回路は
バンドパスフィルタから出力される復調信号を直流電圧
に変換し、演算回路は直流変換回路から出力する直流電
圧信号のレベルを判定し、車上子が地上子と電磁結合し
たときに、電磁結合した地上子の共振周波数を選別する
ことを特徴とする。
According to the present invention, there is provided a point-controlled signal selection device including an on-board device and a grounding element, the on-board device includes an on-board element, a modulation section and a demodulation section, The unit has a programmable counter, a signal conversion circuit, and a power amplifier. The programmable counter sequentially outputs pulses of frequencies f0 to fn at a fixed period, and the signal conversion circuit outputs pulses of frequencies f0 to fn output from the programmable counter at frequency f0. Ffn, the power amplifier amplifies the frequency sweep signal output from the signal conversion circuit, and outputs the amplified signal to the upper part of the vehicle. The demodulation unit includes a phase discrimination circuit, a band-pass filter, a DC voltage conversion circuit, Having an arithmetic circuit,
The phase discrimination circuit demodulates the output signal of the vehicle upper part using the frequency sweep signal output from the signal conversion circuit of the modulation unit, and the bandpass filter removes noise components from the demodulated signal output from the phase discrimination circuit. The DC voltage conversion circuit converts the demodulated signal output from the band-pass filter into a DC voltage, the arithmetic circuit determines the level of the DC voltage signal output from the DC conversion circuit, and the vehicle arm is electromagnetically coupled with the ground arm. In some cases, the resonance frequency of the electromagnetically coupled ground element is selected.

【0007】[0007]

【発明の実施の形態】この点制御式信号選別装置は、列
車に搭載された車上装置と地上に設置された地上子を有
する。車上装置は車上子と変調部及び復調部を有する。
車上子は列車が走行するにしたがい地上子と電磁結合す
る。変調部はプログラマブルカウンタと信号変換回路と
電力増幅器と有し、プログラマブルカウンタから一定周
期で順次出力する周波数f0〜fnのパルスを周波数f
0から周波数fnの周波数スイープ信号に変換して車上
子に出力する。復調部は位相弁別回路とバンドパスフィ
ルタと直流電圧変換回路及び演算回路を有し、変調部で
作成した周波数f0〜fnの周波数スイープ信号を使用
して車上子の出力信号を復調し、復調した信号を直流電
圧に変換して、そのレベルを判断する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS This point control type signal sorting device has an on-board device mounted on a train and a grounding member installed on the ground. The on-board device has an on-board element, a modulating unit, and a demodulating unit.
The upper armature is electromagnetically coupled with the ground arm as the train travels. The modulation unit has a programmable counter, a signal conversion circuit, and a power amplifier, and outputs pulses of frequencies f0 to fn sequentially output from the programmable counter at a constant frequency to the frequency f.
The signal is converted from 0 to a frequency sweep signal having a frequency fn and output to the vehicle upper child. The demodulation unit has a phase discrimination circuit, a band-pass filter, a DC voltage conversion circuit, and an arithmetic circuit, and demodulates and demodulates the output signal of the vehicle body using the frequency sweep signal of the frequency f0 to fn created by the modulation unit. The converted signal is converted to a DC voltage and its level is determined.

【0008】上記のように構成された車上装置の変調部
のプログラマブルカウンタは、常に周波数f0〜fnの
パルス信号を一定周期で順次出力し、信号変換部はプロ
グラマブルカウンタから出力している周波数f0〜fn
のパルス信号を周波数f0〜fnの周波数スイープ信号
に変換する。電力増幅器は信号変換回路から出力された
周波数スイープ信号を増幅して車上子の1次側コイルに
送る。復調部の位相弁別回路は信号変換回路から出力さ
れた周波数スイープ信号を使用して車上子の2次側コイ
ルからの出力信号を復調している。この位相弁別回路か
ら出力する復調信号は列車が地上子の位置に達していな
いときは一定電圧になっている。
The programmable counter of the modulating unit of the on-board device configured as described above always outputs pulse signals of frequencies f0 to fn in a fixed cycle, and the signal converting unit outputs the frequency f0 output from the programmable counter. ~ Fn
Is converted into a frequency sweep signal having frequencies f0 to fn. The power amplifier amplifies the frequency sweep signal output from the signal conversion circuit and sends the amplified signal to the primary coil of the vehicle. The phase discrimination circuit of the demodulation unit demodulates the output signal from the secondary coil of the vehicle upper part using the frequency sweep signal output from the signal conversion circuit. The demodulated signal output from the phase discrimination circuit has a constant voltage when the train has not reached the position of the ground.

【0009】この状態で列車が進行し、車上子が例えば
共振周波数fiの地上子と電磁結合して共振すると、車
上子の2次側コイルから出力している周波数f0〜fn
の周波数スイープ信号のうち周波数fiの信号レベルは
大きくなる。位相弁別回路は車上子の2次側コイルから
送られる周波数fiの信号レベルが大きくなった周波数
スイープ信号を復調して周波数fiの復調信号を出力す
る。バンドパスフィルタは復調信号のノイズ成分を除去
して直流電圧変換回路に送る。直流電圧変換回路は送ら
れた復調信号を周波数fiに応じた直流電圧に変換す
る。この直流電圧のレベルと周波数カウンタの値を演算
回路で判定して共振周波数fiの地上子を選別する。
[0009] In this state, the train advances, and the upper armature is electromagnetically coupled with, for example, the ground arm having the resonance frequency fi, and resonates.
Of the frequency sweep signal, the signal level of the frequency fi increases. The phase discriminating circuit demodulates the frequency sweep signal having the increased signal level of the frequency fi sent from the secondary coil of the vehicle, and outputs a demodulated signal of the frequency fi. The band-pass filter removes noise components of the demodulated signal and sends the signal to the DC voltage conversion circuit. The DC voltage conversion circuit converts the transmitted demodulated signal into a DC voltage according to the frequency fi. The level of the DC voltage and the value of the frequency counter are determined by an arithmetic circuit to select a ground terminal having a resonance frequency fi.

【0010】[0010]

【実施例】図1はこの発明の一実施例の構成を示すブロ
ック図である。図に示すように、点制御式信号選別装置
は、列車に搭載された車上装置1と地上に設置された地
上子2を有する。車上装置1は車上子3と変調部4及び
復調部5を有する。車上子3は列車が走行するにしたが
い地上子2と電磁結合する。変調部4は一定周期で周波
数f0から周波数fnの周波数スイープ信号を出力する
ものであり、プログラマブルカウンタ41とローパスフ
ィルタからなる信号変換回路42と電力増幅器43と周
波数カウンタ44を有する。プログラマブルカウンタ4
1は周波数f0〜fnのパルスを一定周期で順次出力す
る。信号変換回路42はプログラマブルカウンタ41か
ら出力する周波数f0〜fnのパルスを周波数f0〜f
nの周波数スイープ信号に変換して出力する。電力増幅
器43は信号変換回路42から出力された周波数スイー
プ信号を増幅して車上子3に出力する。周波数カウンタ
44はプログラマブルカウンタ41から出力する周波数
f0〜fnのパルスを計数して復調部5に出力する。復
調部5は変調部4で作成した周波数f0〜fnの周波数
スイープ信号を使用して車上子3の出力信号を復調し、
復調した信号を直流電圧に変換して、そのレベルを判断
するものであり、位相弁別回路51とバンドパスフィル
タ52と直流電圧変換回路53及び演算回路54を有す
る。位相弁別回路51は変調部4の信号変換回路42か
ら出力された周波数スイープ信号を使用して車上子3の
出力信号を復調して出力する。バンドパスフィルタ52
は位相弁別回路51から出力される復調信号からノイズ
成分を除去する。直流電圧変換回路53はバンドパスフ
ィルタ52から出力される復調信号を直流電圧に変換し
て出力する。演算回路54は直流変換回路53から出力
する直流電圧信号のレベルと周波数カウンタ44の値を
判定するとともに周波数カウンタ44から出力する計数
値によりプログラマブルカウンタ41からの出力波形の
周波数が一定の周期と分解能でスイープするようにプロ
グラマブルカウンタ41を制御する。
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in the figure, the point control type signal sorting device has an on-board device 1 mounted on a train and a ground child 2 installed on the ground. The on-vehicle device 1 has an on-vehicle child 3, a modulator 4, and a demodulator 5. The upper armature 3 is electromagnetically coupled with the ground armature 2 as the train travels. The modulation unit 4 outputs a frequency sweep signal having a frequency f0 to a frequency fn at a constant period, and includes a programmable counter 41, a signal conversion circuit 42 including a low-pass filter, a power amplifier 43, and a frequency counter 44. Programmable counter 4
Numeral 1 sequentially outputs pulses of frequencies f0 to fn at a constant cycle. The signal conversion circuit 42 converts the pulses of the frequencies f0 to fn output from the programmable counter 41 to the frequencies f0 to fn.
The signal is converted into an n frequency sweep signal and output. The power amplifier 43 amplifies the frequency sweep signal output from the signal conversion circuit 42 and outputs the amplified signal to the upper child 3. The frequency counter 44 counts the pulses of the frequencies f0 to fn output from the programmable counter 41 and outputs them to the demodulation unit 5. The demodulation unit 5 demodulates the output signal of the upper armature 3 using the frequency sweep signals of the frequencies f0 to fn created by the modulation unit 4,
It converts the demodulated signal into a DC voltage and determines the level thereof, and includes a phase discrimination circuit 51, a band-pass filter 52, a DC voltage conversion circuit 53, and an arithmetic circuit 54. The phase discrimination circuit 51 demodulates and outputs the output signal of the upper armature 3 using the frequency sweep signal output from the signal conversion circuit 42 of the modulation unit 4. Bandpass filter 52
Removes noise components from the demodulated signal output from the phase discrimination circuit 51. The DC voltage conversion circuit 53 converts the demodulated signal output from the band pass filter 52 into a DC voltage and outputs the DC voltage. The arithmetic circuit 54 determines the level of the DC voltage signal output from the DC conversion circuit 53 and the value of the frequency counter 44, and the frequency of the waveform output from the programmable counter 41 has a constant cycle and resolution based on the count value output from the frequency counter 44. To control the programmable counter 41 to sweep.

【0011】上記のように構成された車上装置1の変調
部4のプログラマブルカウンタ41は常時、図2の波形
図に示すように、周波数f0〜fnのパルス信号を一定
周期Tで順次出力している。信号変換部42はプログラ
マブルカウンタ41から出力している周波数f0〜fn
のパルス信号を周波数f0〜fnの周波数スイープ信号
に変換して出力する。電力増幅器43は信号変換回路4
2から出力された周波数スイープ信号を増幅して車上子
3の1次側コイルに送る。復調部5の位相弁別回路51
は信号変換回路42から出力された周波数スイープ信号
を使用して車上子3の2次側コイルから出力される信号
を復調している。この位相弁別回路51から出力する復
調信号は列車が地上子2の位置に達していないときは一
定電圧になっている。
The programmable counter 41 of the modulating unit 4 of the on-board device 1 configured as described above always outputs pulse signals of frequencies f0 to fn at regular intervals T as shown in the waveform diagram of FIG. ing. The signal conversion unit 42 outputs the frequencies f0 to fn output from the programmable counter 41.
Is converted into a frequency sweep signal having frequencies f0 to fn and output. The power amplifier 43 is a signal conversion circuit 4
2 is amplified and sent to the primary coil of the upper armature 3. Phase discrimination circuit 51 of demodulation unit 5
Demodulates the signal output from the secondary coil of the upper armature 3 using the frequency sweep signal output from the signal conversion circuit 42. The demodulated signal output from the phase discriminating circuit 51 has a constant voltage when the train has not reached the position of the ground child 2.

【0012】この状態で列車が進行し、車上子3が例え
ば共振周波数fiの地上子2と電磁結合して共振する
と、車上子3の2次側コイルから出力している周波数f
0〜fnの周波数スイープ信号のうち周波数fiの信号
レベルは大きくなる。位相弁別回路51は車上子3の2
次側コイルから送られる周波数fiの信号レベルが大き
くなった周波数スイープ信号を信号変換回路42から出
力された周波数スイープ信号を使用して復調し、図3の
波形図に示すように、周波数fiの復調信号を出力す
る。周波数fiの復調信号はバンドパスフィルタ52を
介して直流電圧変換回路53に送られ、直流電圧変換回
路53で周波数fiに応じた直流電圧に変換させる。こ
の直流電圧のレベルと周波数カウンタ44の値を演算回
路54で判定して共振周波数fiの地上子2を選別す
る。
In this state, the train advances, and the upper armature 3 is electromagnetically coupled with, for example, the ground arm 2 having the resonance frequency fi and resonates. When the upper armature 3 resonates, the frequency f output from the secondary coil of the upper armature 3 becomes higher.
Among the frequency sweep signals of 0 to fn, the signal level of the frequency fi increases. The phase discrimination circuit 51 is connected to the vehicle
The frequency sweep signal transmitted from the secondary coil and having the increased signal level of the frequency fi is demodulated using the frequency sweep signal output from the signal conversion circuit 42, and as shown in the waveform diagram of FIG. Output the demodulated signal. The demodulated signal of the frequency fi is sent to the DC voltage conversion circuit 53 via the band-pass filter 52, and the DC voltage conversion circuit 53 converts the demodulated signal into a DC voltage corresponding to the frequency fi. The level of the DC voltage and the value of the frequency counter 44 are determined by the arithmetic circuit 54 to select the ground terminal 2 having the resonance frequency fi.

【0013】このようにして変調部4から出力している
周波数スイープ信号の周波数f0〜fnに応じた共振周
波数の地上子2からの情報を受信することができ、列車
の制御用の情報量を大幅に増加することができる。
In this manner, information from the ground terminal 2 having a resonance frequency corresponding to the frequencies f0 to fn of the frequency sweep signal output from the modulation section 4 can be received, and the amount of information for controlling the train can be reduced. Can be significantly increased.

【0014】[0014]

【発明の効果】この発明は以上説明したように、車上子
に周波数f0〜fnの周波数スイープ信号を送り、車上
子が地上子と電磁結合して周波数f0〜fnの周波数ス
イープ信号のうち地上子の共振周波数で発振して大きく
なった周波数から地上子の共振周波数を選別するように
したから、車上子に送っている周波数スイープ信号に応
じた情報量の情報を受信することができ、列車の制御用
の情報量を大幅に増加することができる。
As described above, according to the present invention, a frequency sweep signal having a frequency of f0 to fn is transmitted to a vehicle child, and the vehicle child is electromagnetically coupled with a ground child, and the frequency sweep signal having a frequency of f0 to fn is output. Since the resonance frequency of the grounding element is selected from the frequency that oscillated at the resonance frequency of the grounding element and increased, it is possible to receive information of the amount of information according to the frequency sweep signal sent to the vehicle upper part Thus, the amount of information for controlling the train can be greatly increased.

【0015】また、車上装置に変調部と復調部を追加す
れば良いから、装置を小型化できるとともに機器の調整
作業や耐ノイズ性を向上させることができる。
Further, since it is only necessary to add a modulating unit and a demodulating unit to the on-board device, it is possible to reduce the size of the device and to improve equipment adjustment work and noise resistance.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の実施例の構成を示すブロック図であ
る。
FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

【図2】地上子と結合しないときの車上装置の動作を示
す波形図である。
FIG. 2 is a waveform diagram showing an operation of the on-board device when the vehicle is not connected to a grounding element.

【図3】地上子と結合したときの車上装置の動作を示す
波形図である。
FIG. 3 is a waveform diagram showing an operation of the on-board device when the vehicle is connected to a grounding element.

【図4】従来例の構成を示すブロック図である。FIG. 4 is a block diagram showing a configuration of a conventional example.

【符号の説明】[Explanation of symbols]

1 車上装置 2 地上子 3 車上子 4 変調部 5 復調部 41 プログラマブルカウンタ 42 信号変換回路 43 電力増幅器 44 周波数カウンタ 51 位相弁別回路 52 バンドパスフィルタ 53 直流電圧変換回路 54 演算回路 DESCRIPTION OF SYMBOLS 1 On-board apparatus 2 Ground element 3 On-board element 4 Modulation unit 5 Demodulation unit 41 Programmable counter 42 Signal conversion circuit 43 Power amplifier 44 Frequency counter 51 Phase discrimination circuit 52 Bandpass filter 53 DC voltage conversion circuit 54 Operation circuit

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) B61L 1/00 - 23/34 ──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. 7 , DB name) B61L 1/00-23/34

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 車上装置と地上子とを有し、車上装置は
車上子と変調部及び復調部を有し、 変調部はプログラマブルカウンタと信号変換回路と電力
増幅器を有し、プログラマブルカウンタは周波数f0〜
fnのパルスを一定周期で順次出力し、信号変換回路は
プログラマブルカウンタから出力する周波数f0〜fn
のパルスを周波数f0〜fnの周波数スイープ信号に変
換し、電力増幅器は信号変換回路から出力された周波数
スイープ信号を増幅して車上子に出力し、 復調部は位相弁別回路とバンドパスフィルタと直流電圧
変換回路及び演算回路を有し、位相弁別回路は変調部の
信号変換回路から出力された周波数スイープ信号を使用
して車上子の出力信号を復調し、バンドパスフィルタは
位相弁別回路から出力される復調信号からノイズ成分を
除去し、直流電圧変換回路はバンドパスフィルタから出
力される復調信号を直流電圧に変換し、演算回路は直流
変換回路から出力する直流電圧信号のレベルを判定し、
車上子が地上子と電磁結合したときに、電磁結合した地
上子の共振周波数を選別することを特徴とする点制御式
信号選別装置。
An on-board device has an on-board device, a modulator and a demodulator, the modulator has a programmable counter, a signal conversion circuit, and a power amplifier, and is programmable. The counter has a frequency f0
fn pulses are sequentially output at a constant cycle, and the signal conversion circuit outputs frequencies f0 to fn output from the programmable counter.
Is converted to a frequency sweep signal having a frequency of f0 to fn, the power amplifier amplifies the frequency sweep signal output from the signal conversion circuit and outputs the amplified signal to the vehicle upper body, and the demodulation section includes a phase discrimination circuit, a bandpass filter, and the like. It has a DC voltage conversion circuit and an arithmetic circuit, and the phase discrimination circuit demodulates the output signal of the vehicle upper part using the frequency sweep signal output from the signal conversion circuit of the modulation unit, and the band pass filter outputs A noise component is removed from the output demodulated signal, a DC voltage conversion circuit converts the demodulated signal output from the bandpass filter into a DC voltage, and an arithmetic circuit determines the level of the DC voltage signal output from the DC conversion circuit. ,
A point control type signal selection device, wherein when a vehicle arm is electromagnetically coupled to a ground arm, the resonance frequency of the electromagnetically ground arm is selected.
JP4419999A 1999-02-23 1999-02-23 Point control type signal sorting device Expired - Lifetime JP3004985B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4419999A JP3004985B1 (en) 1999-02-23 1999-02-23 Point control type signal sorting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4419999A JP3004985B1 (en) 1999-02-23 1999-02-23 Point control type signal sorting device

Publications (2)

Publication Number Publication Date
JP3004985B1 true JP3004985B1 (en) 2000-01-31
JP2000238640A JP2000238640A (en) 2000-09-05

Family

ID=12684913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4419999A Expired - Lifetime JP3004985B1 (en) 1999-02-23 1999-02-23 Point control type signal sorting device

Country Status (1)

Country Link
JP (1) JP3004985B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4596819B2 (en) * 2003-10-22 2010-12-15 日本信号株式会社 ATS equipment
JP4823127B2 (en) * 2006-05-24 2011-11-24 三菱電機株式会社 Ground information reader
JP5279682B2 (en) * 2009-10-29 2013-09-04 株式会社京三製作所 Train control device
JP5951240B2 (en) * 2011-11-30 2016-07-13 株式会社東芝 On-board transmitter

Also Published As

Publication number Publication date
JP2000238640A (en) 2000-09-05

Similar Documents

Publication Publication Date Title
KR20140036190A (en) Receiver of radiofrequency signals
JP3004985B1 (en) Point control type signal sorting device
JP2989601B1 (en) Point control type signal sorting device
EP1468891A1 (en) Method for increasing the signal/noise ratio of axle counters systems
US5066948A (en) Receiver for use in remote control system
JP2568991B2 (en) Measuring device for ground on automatic train stop
JPS5925445B2 (en) Counter circuit for measuring train distance
JP3555070B2 (en) Remote control receiver and interference wave removal method
JPH0523004Y2 (en)
JPH0754258B2 (en) A device that measures physical quantities and converts them into electricity
CN210127421U (en) Novel deceleration strip
RU2160202C1 (en) Device for detecting passage of wheelset and wheelset detection track transmitter
JPH0618854Y2 (en) Track circuit receiver
JPS61203737A (en) Communication system between vehicles on road
SU1100177A1 (en) System for controlling converter process
US4109205A (en) Frequency modulation signalling system employing an electrical filter device
KR100218399B1 (en) Receiving apparatus for af track circuit
JP2584195Y2 (en) Train travel point detection device
KR960007343A (en) Automatic driving control system for electric cars
JPH0721041Y2 (en) ATC on-board device
JPH0243239B2 (en)
JPH0325187Y2 (en)
JPS61275055A (en) Information transmitter
JPS5846499A (en) Vehicle detector
DE2653167A1 (en) Transmission of state of motor vehicle tyres, wheels and brakes - using two coupling coils on vehicle belonging to oscillator circuit tuned to same frequency as coupling circuit mounted on wheel rim

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071119

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081119

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091119

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101119

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101119

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111119

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111119

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121119

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121119

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131119

Year of fee payment: 14

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131119

Year of fee payment: 14

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term