JPH05254432A - Train position detecting device - Google Patents

Train position detecting device

Info

Publication number
JPH05254432A
JPH05254432A JP8970792A JP8970792A JPH05254432A JP H05254432 A JPH05254432 A JP H05254432A JP 8970792 A JP8970792 A JP 8970792A JP 8970792 A JP8970792 A JP 8970792A JP H05254432 A JPH05254432 A JP H05254432A
Authority
JP
Japan
Prior art keywords
signal
code
train
rail
spread
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.)
Granted
Application number
JP8970792A
Other languages
Japanese (ja)
Other versions
JP3118067B2 (en
Inventor
Shoji Irie
Kenji Nakada
Atsushi Sugawara
健二 中田
章二 入江
淳 菅原
Original Assignee
Nippon Signal Co Ltd:The
日本信号株式会社
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 Nippon Signal Co Ltd:The, 日本信号株式会社 filed Critical Nippon Signal Co Ltd:The
Priority to JP8970792A priority Critical patent/JP3118067B2/en
Publication of JPH05254432A publication Critical patent/JPH05254432A/en
Application granted granted Critical
Publication of JP3118067B2 publication Critical patent/JP3118067B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To improve a noise-proof characteristic and a mutual interference characteristic with an adjacent track circuit by conducting train detection in which a track circuit used is in a spectrum spread communication method. CONSTITUTION:This train position detecting device consists of a signal spreading means 2 that spreads and processes a specified transmit signal with a PN code, a transmitting means 3 that transmits a spread signal spread by the signal spreading means 2 to the side (A) of the starting end of a rail that forms a track circuit, a receiving means 5 that receives the spread signal from the side (B) of the terminal end of the rail, an extracting means 6 that demodulates and processes the spread signal received by the receiving means 5 using the specified transmit signal and extracts PN code, and a detecting means 8 that detects the coincidence state of the extracted signal extracted by the extracting means and the PN code and detects the existence of a train on the rail from the presence of the coincidence state, and the transmit signal, kinds and phases of PN codes are changed to eliminate mutual interference with an adjacent track circuit.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は列車位置検知装置に係
り、特に、軌道回路を利用したものに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train position detecting device, and more particularly to a train position detecting device using a track circuit.

【0002】[0002]

【従来の技術】従来、軌道回路を利用した列車位置検知
装置は、レール(軌道)を所定長さ毎に区分して形成さ
れた閉そく区間のレールを、軌道回路の一部とし、その
閉そく区間の始端側(列車の進出する側)に、所定周波
数の信号を送出する送信器を接続するとともに、その閉
そく区間の終端側(列車が進入する側)に信号を受信す
る受信器を接続して構成されている。
2. Description of the Related Art Conventionally, a train position detecting device using a track circuit has a rail of a block section formed by dividing a rail (track) into predetermined lengths as a part of the track circuit. Connect a transmitter that sends out a signal of a predetermined frequency to the start side of the train (the side where the train advances) and a receiver that receives the signal at the end of the closed section (the side where the train enters). It is configured.

【0003】上記構成において、閉そく区間内に列車が
存在し、レールが列車の車軸(車輪)で短絡されたとき
は、受信器の出力レベルは低下し、一方、閉そく区間内
に列車が存在しないときは、受信器の出力は所定高さに
維持される。したがって、受信器の出力で軌道リレーを
ON,OFFさせれば、そのON,OFF状態で閉そく
区間内の列車有無を検知することができる。
In the above structure, when a train exists in the closed section and the rail is short-circuited by the train axle (wheel), the output level of the receiver decreases, while the train does not exist in the closed section. At this time, the output of the receiver is maintained at a predetermined height. Therefore, if the track relay is turned ON / OFF by the output of the receiver, the presence / absence of a train in the closed section can be detected in the ON / OFF state.

【0004】上記閉そく区間は、相隣接する閉そく区間
とインピーダンスボンド等で交流信号に対して電気的絶
縁が図られていて、相隣接する閉そく区間の列車検知用
の信号と干渉し合わないように工夫されている。また、
交流信号に対して電気的に無絶縁に形成されている場合
は、相隣接する閉そく区間で使用される検知用の信号の
周波数を互いに異なるようにして干渉を防止している。
The block sections are electrically isolated from the AC signals by impedance bonds with the adjacent block sections so that they do not interfere with the train detection signals of the adjacent block sections. It is devised. Also,
In the case of being electrically non-insulated with respect to the AC signal, the frequencies of the detection signals used in the adjacent block sections are made different from each other to prevent interference.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記従
来の軌道回路を利用した列車検知装置において、軌道回
路の一部を形成するレールは、ノイズを受けやすい環境
にあるためS/N比が低くなりやすく、また、隣接軌道
との相互干渉を無くすため搬送周波数を変え、さらに、
軌道境界に共振回路を設ける等のために、回路構成が複
雑になるという欠点があった。
However, in the above-described train detecting device using the track circuit, the rail forming a part of the track circuit is in an environment susceptible to noise, so that the S / N ratio becomes low. Easy, and change the carrier frequency to eliminate mutual interference with adjacent trajectories.
There is a drawback that the circuit configuration becomes complicated because a resonance circuit is provided at the track boundary.

【0006】[0006]

【課題を解決するための手段】本発明に係る列車位置検
知装置は、上記課題を解決するために、所定の送信信号
をPN符号で拡散処理する信号拡散手段と、その信号拡
散手段で拡散された拡散信号を軌道回路を形成するレー
ルの始端側に送出する送出手段と、前記レールの終端側
から前記拡散信号を受信する受信手段と、その受信手段
で受信された前記拡散信号を前記所定の送信信号を用い
て復調処理して前記PN符号を抽出する抽出手段と、そ
の抽出手段で抽出された抽出信号と前記PN符号の一致
状態を検出し、その一致状態の有無から前記レール上の
列車の存在を検知する検知手段とを有することを特徴と
している。
In order to solve the above-mentioned problems, a train position detecting device according to the present invention has a signal spreading means for spreading a predetermined transmission signal with a PN code and a signal spreading means for spreading the signal. Sending means for sending the spread signal to the start side of the rail forming the track circuit, receiving means for receiving the spread signal from the end side of the rail, and the spread signal received by the receiving means for the predetermined signal. The extraction means for demodulating the PN code by performing a demodulation process using the transmission signal, the coincidence state of the extraction signal extracted by the extraction means and the PN code is detected, and the train on the rail is detected from the presence or absence of the coincidence state And a detection means for detecting the presence of the.

【0007】[0007]

【作用】上記構成において、軌道回路を形成するレール
の始端側には、信号拡散手段で拡散された拡散信号が送
出手段により供給される。そして、そのレール上に列車
が存在しないときは、レールの終端側から受信された受
信信号が送信信号を用いて復調処理されて信号拡散手段
で用いられたPN符号が抽出される。次いで、検知手段
で抽出されたPN符号と信号拡散手段で用いられたPN
符号とが一致したときに列車ありを検知する。一方、そ
のレール上に列車が存在するときは、受信手段の受信レ
ベルが低く、したがって、抽出手段でPN符号が抽出さ
れない。このため、検知手段はPN符号の一致状態がな
いことを条件に列車ありを検知する。
In the above construction, the spreading signal spread by the signal spreading means is supplied to the starting end side of the rail forming the track circuit by the sending means. Then, when there is no train on the rail, the received signal received from the terminal end side of the rail is demodulated using the transmission signal and the PN code used in the signal spreading means is extracted. Next, the PN code extracted by the detection means and the PN used by the signal spreading means
The presence of a train is detected when the codes match. On the other hand, when there is a train on that rail, the receiving level of the receiving means is low, and therefore the PN code is not extracted by the extracting means. For this reason, the detection means detects the presence of a train on the condition that there is no PN code matching state.

【0008】[0008]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1は、一実施例に係る列車位置検知装置の概略
構成図であって、軌道(本発明のレールに相当し、以下
レールというときもある。)Tは、所定間隔毎の閉そく
区間(図1では、図面を簡略化するために閉そく区間T
i を中心に3個の閉そく区間しか示されていない。)T
i ,Ti-1 ,Ti+1 に区分されている。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a train position detecting device according to an embodiment, in which a track (corresponding to a rail of the present invention and sometimes also referred to as a rail hereinafter) T is a block section at predetermined intervals (see FIG. In FIG. 1, the block section T is shown in order to simplify the drawing.
Only three block intervals centered around i are shown. ) T
It is divided into i , T i−1 , and T i + 1 .

【0009】各閉そく区間Ti ,Ti-1 ,Ti+1 は、周
知のインピーダンスボンドを用いた区分でもよく、また
レール間にコンデンサ等を介在させた無絶縁区分でもよ
い。
Each block section T i , T i-1 , T i + 1 may be a section using a well-known impedance bond, or may be a non-insulating section in which a capacitor or the like is interposed between rails.

【0010】本実施例装置は、各閉そく区間毎に設置さ
れるので、以下、閉そく区間Ti に対応した列車位置検
知装置を説明する。
Since the apparatus of this embodiment is installed in each block section, a train position detecting apparatus corresponding to the block section T i will be described below.

【0011】閉そく区間Ti のレールTの始端側(列車
aが閉そく区間Ti から進出する側)イと、終端側(列
車aが閉そく区間Ti に進入する側)ロとが機器室bに
電気的に接続されている。
The equipment room b has a rail end T of the closed section T i (the side where the train a advances from the closed section T i ) a and an end side (the side where the train a enters the closed section T i ) b. Electrically connected to.

【0012】機器室bには、送・受信設備が設置されて
いて、列車aの閉そく区間Ti における位置が検知でき
るように構成されている。
A transmission / reception facility is installed in the equipment room b so that the position of the train a in the closed section T i can be detected.

【0013】先ず、送信設備としては、信号発生器1、
拡散回路2及び送信器3が設けられている。信号発生器
1は、無変調又は所定の送信信号を変調回路により通常
のAM,FM等に変調処理された搬送波(本発明の送信
信号に該当)(fci)を拡散回路2に出力するように構
成されている。
First, as the transmission equipment, the signal generator 1,
A spreading circuit 2 and a transmitter 3 are provided. The signal generator 1 outputs a carrier wave (corresponding to the transmission signal of the present invention) (f ci ) obtained by modulating a non-modulated or predetermined transmission signal into a normal AM, FM or the like by the modulation circuit (f ci ). Is configured.

【0014】拡散回路2は、所定のPN符号(PN
i'(θi'' ))を発生させるPN符号発生器4からのP
N符号を用いて搬送波(fci)を拡散処理した後、次の
送信器3へ出力するように構成されている。
The spreading circuit 2 uses a predetermined PN code (PN
P from the PN code generator 4 for generating i ′i ″ ))
The carrier wave (f ci ) is spread using the N code and then output to the next transmitter 3.

【0015】送信器3は、周知の増巾器から形成されて
いて、その出力をレールTの始端側イへ供給するように
構成されている。
The transmitter 3 is formed of a well-known amplifier, and is configured to supply its output to the starting side a of the rail T.

【0016】次に、受信設備としては、受信器5、復調
回路6、フィルタ回路7及び検知回路8が設けられてい
る。この受信器5は周知の増巾回路で形成されていて、
その出力信号を復調回路6へ出力するように構成されて
いる。
Next, as the receiving equipment, a receiver 5, a demodulation circuit 6, a filter circuit 7 and a detection circuit 8 are provided. This receiver 5 is formed by a well-known widening circuit,
The output signal is output to the demodulation circuit 6.

【0017】復調回路6は、上記信号発生器1が上記拡
散回路2へ送出した搬送波(fci)を用いて割算処理す
るように構成されている。
The demodulation circuit 6 is configured to perform division processing using the carrier wave (f ci ) sent from the signal generator 1 to the spreading circuit 2.

【0018】フィルタ回路7は周知のロ−パスフィルタ
から形成されていて、復調回路6からの出力をフィルタ
処理して検知回路8へ出力するように構成されている。
The filter circuit 7 is formed of a known low-pass filter, and is configured to filter the output from the demodulation circuit 6 and output it to the detection circuit 8.

【0019】検知回路8は、周知の相関マッチドフィル
タ回路から形成され、上記PN符号発生器4からのPN
符号(PNi'(θi'' ))を入力し、フィルタ回路7か
らのPN符号(PNi'(θi'' ))との一致状態を検出
し、その一致状態の有無で軌道リレーTRを駆動するよ
うに構成されている。
The detection circuit 8 is formed of a well-known correlation matched filter circuit, and the PN from the PN code generator 4 is used.
The code (PN i ′i ″ )) is input, the matching state with the PN code (PN i ′i ″ )) from the filter circuit 7 is detected, and the orbit relay is performed based on the presence or absence of the matching state. It is configured to drive TR.

【0020】なお、検知回路8、拡散回路2、PN符号
発生器4及び信号発生器1は、同一機器室b内に設置さ
れ有線により接続されているので、同期処理は極めて容
易に行うことができる。したがって、送・受信設備が隔
離されている通常のスペクトラム拡散通信のような複雑
な同期回路等を一切設ける必要がない。
Since the detection circuit 8, the spreading circuit 2, the PN code generator 4 and the signal generator 1 are installed in the same equipment room b and connected by wire, the synchronization process can be performed very easily. it can. Therefore, it is not necessary to provide any complicated synchronizing circuit such as ordinary spread spectrum communication in which the transmitting and receiving facilities are isolated.

【0021】上記構成の本実施例装置は、閉そく区間T
i がインピーダンスボンド等で交流信号に対して電気的
に絶縁されている場合であってももちろん適用できる。
しかし、このような絶縁設備を持たない無絶縁式の場合
は、相隣接する閉そく区間Ti+1 ,Ti-1 との干渉を防
止するために、搬送波(fci)の周波数、PN符号の種
類、PN符号の位相のいずれか一つ、またはこれらのう
ちの2つ、さらには全てを相隣接する閉そく区間
i+1 ,Ti-1 で用いるものと異なるものが用いられ
る。
The device of the present embodiment having the above-mentioned configuration has a block section T.
Even when i is electrically insulated from an AC signal by an impedance bond or the like, it is of course applicable.
However, in the case of the non-insulation type without such insulation equipment, in order to prevent interference with the adjacent blocking sections T i + 1 and T i-1 , the frequency of the carrier wave (f ci ) and the PN code are used. , One of the phases of the PN code, or two of them, or all of them, which are different from those used in the adjacent block sections T i + 1 and T i−1 .

【0022】搬送波(fci)の周波数を相隣接する閉そ
く区間Ti-1 ,Ti+1 と異ならせることは、従来の軌道
回路を使用した列車位置検知装置と同じであるが、PN
符号の種類又はPN符号の位相を異ならせることは、本
発明の構成によってもたらすことができる特徴である。
The difference in the frequency of the carrier wave (f ci ) from the adjacent block sections T i-1 and T i + 1 is the same as in the conventional train position detecting device using a track circuit, but PN
Differentiating the type of code or the phase of the PN code is a feature that can be brought about by the configuration of the present invention.

【0023】ここで、PN符号の種類を異ならせるに
は、例えば、閉そく区間Ti でm系列符号の内の1つの
PN符号を用いたときは、右隣りの閉そく区間Ti-1
は、このPN符号を符号長の同じm系列のもう1つの符
号を用いることである。また、PN符号の位相を異なら
せるには、図2に示されるように、全ての閉そく区間T
i ,Ti-1 ,Ti+1 で同一のPN符号、又は種類の異な
るPN符号を用いたときに、例えばΔθだけ相隣接する
閉そく区間Ti-1 ,Ti+1 と相違させることである。
[0023] Here, to differentiate the type of PN code, for example, when using one PN code of the m-sequence code in block section T i is the block section T i-1 to the right, This PN code is to use another m-sequence code having the same code length. Further, in order to make the phases of the PN codes different, as shown in FIG.
When the same PN code or different kinds of PN codes are used for i , T i-1 , T i + 1 , differentiating from the closed intervals T i-1 , T i + 1 which are adjacent to each other by Δθ, for example. Is.

【0024】本実施例装置において、搬送波(fci
は、相隣接する閉そく区間Ti-1 ,Ti+1 と異なるもの
を用いるとともに、PN符号は各閉そく区間Ti ,T
i-1 ,Ti+1 で異なるPN符号PNi'を用い、かつ位相
をΔθだけ互いにずらして用いている。したがって、隣
接する閉そく区間同志で互いに干渉することなく送,受
信することが可能である。又、装置を簡略化するために
搬送波(fci),PN符号(PNi'),PN符号の位相
(θi'' )の内1つ又は2つを変えて構成することもで
き、この場合でも隣接軌道との相互干渉をそれなりに低
くできる。
In the apparatus of this embodiment, the carrier wave (f ci )
Is different from the adjacent block sections T i-1 and T i + 1, and the PN code is a block section T i and T i .
Different PN codes PN i ′ are used for i−1 and T i + 1 , and the phases are used by being shifted from each other by Δθ. Therefore, it is possible to transmit and receive in adjacent block sections without interfering with each other. Further, in order to simplify the device, one or two of the carrier wave (f ci ), the PN code (PN i ′ ) and the phase (θ i ″ ) of the PN code can be changed, and this can be constructed. Even in this case, the mutual interference with the adjacent orbits can be reduced to some extent.

【0025】次ぎに、本実施例装置の検知動作について
説明する。先ず、閉そく区間Ti に列車aが存在しない
場合について説明する。
Next, the detection operation of the apparatus of this embodiment will be described. First, the case where the train a does not exist in the block section T i will be described.

【0026】信号発生器1から送出された搬送波
(fci)は拡散回路2でPN符号(PNi'(θi'' ))
を用いて拡散処理されて拡散信号となって送信器3を介
してレールTの始端側イに供給される。
The carrier wave (f ci ) sent from the signal generator 1 is PN code (PN i 'i'' )) in the spreading circuit 2.
Is spread to be a spread signal, which is supplied to the starting side a of the rail T via the transmitter 3.

【0027】レールTの終端側ロでは、レールTの長さ
に起因した減衰を伴う搬送波を含む拡散信号が存在す
る。そして、この拡散信号は、受信器5で増巾処理され
たのち、復調回路6で搬送波(fci)を用いて復調処理
して拡散信号(PNi')を取り出し、フィルタ回路7で
フィルタ処理し、元のPN符号(PNi')が抽出され
る。
At the terminal end B of the rail T, there is a spread signal including a carrier with attenuation due to the length of the rail T. Then, the spread signal is subjected to a widening process in the receiver 5, and then demodulated in the demodulation circuit 6 using the carrier wave (f ci ), and a spread signal (PN i ′ ) is taken out, and in the filter circuit 7, it is filtered. Then, the original PN code (PN i ′ ) is extracted.

【0028】その後、検知器8は、フィルタ回路7の出
力にPN符号(PNi')が存在しているときに軌道リレ
ーTRを扛上する。この際、例えば、閉そく区間Ti
商用電源高調波に起因するノイズや軌道Tに隣接する他
の軌道を走行する列車から送出されたノイズ等が存在し
ていても、フィルタ回路7の出力中にPN符号(P
i')が含まれているときは、ノイズを無視して検出出
力を得ることができるので、極めて耐ノイズ性の高いの
列車位置検知とすることができる。
Thereafter, the detector 8 activates the track relay TR when the PN code (PN i ' ) is present in the output of the filter circuit 7. At this time, for example, even if noise caused by the harmonics of the commercial power source or noise sent from a train traveling on another track adjacent to the track T is present in the block section T i , the output of the filter circuit 7 is still occurring. PN code (P
When N i ′ ) is included, noise can be ignored and a detection output can be obtained, so that train position detection with extremely high noise resistance can be performed.

【0029】他方、閉そく区間Ti に列車aが存在する
と、レールTは列車aの車軸により短絡されるので、終
端側ロの拡散信号のレベルは小さく、したがって受信器
5の出力レベルも小さくなる。このため、検知器8は軌
道リレーTRの扛上を維持できず落下する。この軌道リ
レーTRの落下により列車aが閉そく区間Ti に存在し
たことを知ることができる。もちろん、列車aを検知し
ている状態においても検知器8の出力はPN符号(PN
i')の一致状態を見ているのでノイズは効果的に除去さ
れる。
On the other hand, when the train a exists in the closed section T i , the rail T is short-circuited by the axle of the train a, so that the level of the spread signal on the terminal side B is small, and therefore the output level of the receiver 5 is also small. . Therefore, the detector 8 cannot maintain the lift of the track relay TR and falls. By the fall of the track relay TR, it can be known that the train a was present in the closed section T i . Of course, even when the train a is being detected, the output of the detector 8 is the PN code (PN
The noise is effectively removed because the i ' ) matching state is seen.

【0030】なお、上述の実施例では、搬送波、PN符
号の種類及びPN符号の位相全てを相隣接する閉そく区
間と異なるものを使用したが、これらのうちの一つ又は
2つ相異していても同様に耐ノイズ性の高い又、隣接軌
道回路との相互干渉の無い列車位置検知とすることがで
きる。
In the above embodiment, the carrier, the type of the PN code, and the phase of the PN code are all different from the adjacent blocking sections, but one or two of them are different. However, the train position can be detected with high noise resistance and without mutual interference with adjacent track circuits.

【0031】[0031]

【発明の効果】本発明に係る列車位置検知装置は、所定
の送信信号をPN符号で拡散処理する信号拡散手段と、
その信号拡散手段で拡散された拡散信号を軌道回路を形
成するレールの始端側に送出する送出手段と、前記レー
ルの終端側から前記拡散信号を受信する受信手段と、前
記受信手段で受信された前記拡散信号を前記所定の送信
信号を用いて復調処理して前記PN符号を抽出する抽出
手段と、その抽出手段で抽出された抽出信号と前記PN
符号の一致状態を検出し、その一致状態の有無から前記
レール上の列車の存在を検知する検知手段とからなるの
で耐ノイズ性の優れた列車位置検知装置とすることがで
きる。特に、このPN符号の一致状態即ち、相関は符号
長を大きくすればよりノイズから区別でき大きな耐ノイ
ズ性が得られる。従って、逆拡散処理により送信信号を
抽出する方式よりも更に耐ノイズ性を高くでき、隣接軌
道回路との相互干渉の無い列車位置検知装置とすること
ができる。
The train position detecting device according to the present invention comprises a signal spreading means for spreading a predetermined transmission signal with a PN code,
Sending means for sending the spread signal spread by the signal spreading means to the start end side of the rail forming the track circuit, receiving means for receiving the spread signal from the end side of the rail, and receiving means for receiving the spread signal Extraction means for demodulating the spread signal using the predetermined transmission signal to extract the PN code, the extraction signal extracted by the extraction means, and the PN
The train position detecting device having excellent noise resistance can be provided because the train position detecting device detects the coincidence state of the codes and detects the presence of the train on the rail based on the presence or absence of the coincidence state. In particular, the coincidence state of the PN codes, that is, the correlation can be more distinguished from noise by increasing the code length, and a large noise resistance can be obtained. Therefore, the noise resistance can be further improved as compared with the method of extracting the transmission signal by the despreading process, and the train position detecting device without mutual interference with the adjacent track circuit can be provided.

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

【図1】本発明の一実施例装置の概略構成図である。FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment of the present invention.

【図2】PN符号の位相差を示す説明図である。FIG. 2 is an explanatory diagram showing a phase difference of a PN code.

【符号の説明】[Explanation of symbols]

1 信号発生器 2 拡散回路(拡散手段) 3 送信器(送出手段) 4 PN符号発生器 5 受信器 6 復調回路(抽出手段) 8 検知回路(検知手段) 1 signal generator 2 spreading circuit (spreading means) 3 transmitter (sending means) 4 PN code generator 5 receiver 6 demodulation circuit (extracting means) 8 detecting circuit (detecting means)

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 所定の送信信号をPN符号で拡散処理す
    る信号拡散手段と、 前記信号拡散手段で拡散された拡散信号を軌道回路を形
    成するレールの始端側に送出する送出手段と、 前記レールの終端側から前記拡散信号を受信する受信手
    段と、 前記受信手段で受信された前記拡散信号を前記所定の送
    信信号を用いて復調処理して前記PN符号を抽出する抽
    出手段と、 前記抽出手段で抽出された抽出信号と前記PN符号の一
    致状態を検出し、その一致状態の有無から前記レール上
    の列車の存在を検知する検知手段と、 を有することを特徴とする列車位置検知装置。
    1. A signal spreading means for spreading a predetermined transmission signal with a PN code, a sending means for sending the spread signal spread by the signal spreading means to a starting side of a rail forming a track circuit, and the rail. Receiving means for receiving the spread signal from the terminal side of the receiving means, extracting means for demodulating the spread signal received by the receiving means using the predetermined transmission signal to extract the PN code, and the extracting means. A train position detecting device, comprising: a detecting unit that detects a coincidence state between the extracted signal extracted in step 1 and the PN code and detects the presence of a train on the rail based on the presence or absence of the coincidence state.
JP8970792A 1992-03-13 1992-03-13 Train position detection device Expired - Fee Related JP3118067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8970792A JP3118067B2 (en) 1992-03-13 1992-03-13 Train position detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8970792A JP3118067B2 (en) 1992-03-13 1992-03-13 Train position detection device

Publications (2)

Publication Number Publication Date
JPH05254432A true JPH05254432A (en) 1993-10-05
JP3118067B2 JP3118067B2 (en) 2000-12-18

Family

ID=13978254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8970792A Expired - Fee Related JP3118067B2 (en) 1992-03-13 1992-03-13 Train position detection device

Country Status (1)

Country Link
JP (1) JP3118067B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103213602A (en) * 2012-01-19 2013-07-24 Ls产电株式会社 Track circuit apparatus for train

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103213602A (en) * 2012-01-19 2013-07-24 Ls产电株式会社 Track circuit apparatus for train
CN103213602B (en) * 2012-01-19 2016-05-04 Ls产电株式会社 For the track circuit device of train

Also Published As

Publication number Publication date
JP3118067B2 (en) 2000-12-18

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