JP2005001514A - Movable platform fence device - Google Patents

Movable platform fence device Download PDF

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Publication number
JP2005001514A
JP2005001514A JP2003167194A JP2003167194A JP2005001514A JP 2005001514 A JP2005001514 A JP 2005001514A JP 2003167194 A JP2003167194 A JP 2003167194A JP 2003167194 A JP2003167194 A JP 2003167194A JP 2005001514 A JP2005001514 A JP 2005001514A
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Prior art keywords
wave
reflected wave
transmission
reflected
range
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JP2003167194A
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JP3872771B2 (en
Inventor
Junichiro Okada
淳一郎 岡田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a movable platform fence device which detects a detecting object in a proper detection range and improves detection accuracy. <P>SOLUTION: The movable platform fence device comprises: a modulating means 5 for producing a transmission wave by modulating a carrier wave; a transmitting/receiving antenna 4 for emitting the transmission wave into a preset measuring range and receiving the reflected wave of the transmission wave; a demodulating means 5 for demodulating the reflected wave and recognizing that the reflected wave is produced from the transmission wave emitted from an antenna; and a logical processing means 20 for determining that the detected object exists in a predetermined range when the reflected wave is produced from the transmission wave, and that the receiving level of the reflected wave is in a predetermined level range. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【発明の属する技術分野】
この発明は、可動ホーム柵装置、特に、ＳＳミリ波レーダーを利用して、可動ホーム柵内の侵入者、侵入物およびホーム在線中の列車等の検知対象を検知する可動ホーム柵装置に関するものである。
【０００１】
【従来の技術】
可動ホーム柵内の侵入者や侵入物を検知する場合、可動ホーム柵に沿った長いエリアを検知範囲として、検知範囲内に存在する物体を、死角を作ることなく検知する必要がある。
このような状況において、侵入者などの支障物を検知する手段として、レーザー光が渡り通路を横断するように照射されるとともに、渡り通路に沿う方向あるいは当該方向に対して斜め方向に走査されるものが提案されている（例えば、特許文献１参照）。
【０００２】
【特許文献１】
特開２００２−２２００４６号公報
【０００３】
検出領域内の侵入物を検出するための侵入物検出手段は一対の戸袋柵１の一方に装着された透過型センサである投光器と、他方の戸袋柵１に装着された透過型センサである受光器から成り、投光器からの検出光が検出領域を通って受光器で受けるように構成されており、１つの投光器からの検出光を検出領域内の例えば人間などの侵入物が遮ることにより、侵入物を検出するようにしている。
【０００４】
【発明が解決しようとする課題】
従来の可動ホーム柵装置は以上のように構成されているので、投光器から受光器を侵入物が遮ることにより検知する方式をとっているために、点と線における範囲しか検知することが出来ず、必ず死角が出来てしまい、検知できない検知エリアが存在してしまう問題点があった。
【０００５】
この発明は、以上のような問題点を解消するためになされたもので、的確な検知範囲で検知対象を検知でき、検知精度の向上を図ることができる可動ホーム柵装置を提供することを目的としたものである。
【０００６】
【課題を解決するための手段】
この発明に係わる可動ホーム柵装置では、プラットホームに線路と並行して延在するプラットホーム柵の線路側に設けられ搬送波を変調した送信波を予め設定した測定距離内に発射する送信手段と、前記プラットホーム柵の線路側に設けられ前記送信波の反射波を受信する受信手段と、前記反射波を復調して前記反射波が前記送信手段から発射された前記送信波のものであることを確認する復調手段と、前記反射波が前記送信波のものであり、前記反射波の受信レベルが所定のレベルの範囲内であるとき、検知対象が所定の範囲に存在すると判定する論理処理手段とを備えたものである。
【０００７】
【発明の実施の形態】
実施の形態１．
この発明による実施の形態を図１ないし図３について説明する。図１はこの発明による実施の形態における構成を示すブロック図である。図２はこの発明による実施の形態における構成を示すブロック図である。図３はこの発明による実施の形態における反射波の受信レベルを示す説明図である。
【０００８】
図１において、可動ホーム柵２はプラットホーム１に線路３のレールと並行して延在し、その一部が線路３と並行に移動して乗客通路を開閉する。可動ホーム柵２から見て線路３のレール側に侵入物検知エリア１０がある。
可動ホーム柵２の固定部分には、線路３のレール側に送信アンテナ４ａおよび受信アンテナ４ｂが設けられている。
【０００９】
変調手段５ａでは、ミリ波の搬送波をＰＮ（疑似雑音）符号でスペクトラム拡散（ＳＳ）変調して送信波を作成する。
例えば図１に示すように前方３ｍ〜５ｍを検知範囲とした送信アンテナ４ａで、変調手段５ａで作成された送信波を予め設定した測定距離の範囲に転落物を検知するように侵入物検知エリア１０内に向けて発射する。この場合、測定距離の範囲は送信アンテナ４ａの検知範囲とする。
同じく受信アンテナ４ｂで、侵入者、侵入物または列車から反射された反射波を受信する。復調手段５ｂは、受信アンテナ４ｂで受信した反射波を逆拡散により復調する。
【００１０】
論理処理手段２０では、反射波から抽出したＰＮ（擬似雑音）符号と搬送波のＰＮ（擬似雑音）符号とが一致したとき、反射波が送信アンテナ４ａから発射された送信波のものであると判定すると共に、反射波の受信レベルが所定のレベルの範囲内のとき、測定範囲内に侵入物が存在すると判定する。
伝送手段２１は論理処理手段２０の判定結果を伝送し、案内制御装置（図示せず）や踏切制御装置（図示せず）等を制御する。
【００１１】
次に、動作について説明する。
図１において、変調手段５ａで作成した送信波を、予め設定した測定距離内の測定範囲に向けて送信アンテナ４ａから発射する。転落物等の侵入物が測定範囲内に存在しないときは、反射した反射波を受信アンテナ４ｂが受信し、反射波を復調手段５ｂで逆拡散により復調する。
【００１２】
図３は論理処理手段２０に記憶されている反射波の受信レベルを示す説明図である。
図３において、反射波の受信レベルのしきい値２２は、後述の列車信号２３、侵入者信号２４および侵入物信号２５を判別する。
列車信号２３は列車から反射した反射波信号を示すもので、その信号レベルはしきい値２２以上である。
侵入者信号２４は各侵入物検知エリア１０内への侵入者から反射された反射波の受信レベルを示すものである。
侵入物信号２５は各侵入物検知エリア１０内への侵入物から反射された反射波の受信レベルを示すものである。
侵入者検知レベル範囲２６により、受信レベルがこの範囲にあるときに侵入者が存在すると判定する。
【００１３】
図１から図３において、変調手段５ａで作成された送信波を予め設定されている侵入物検知エリア１０に向けて各送信アンテナ４ａから発射する。
侵入物検知エリア１０内に侵入物が存在していないときは、既設設備から反射した反射波を送信アンテナ４ａと一対の相手の各受信アンテナ４ｂがそれぞれ受信する。
受信された反射波はそれぞれ受信アンテナ４ｂに対応した復調手段５ｂで逆拡散により復調される。
【００１４】
そして、論理処理手段２０では反射波の受信レベルが図３に示すように、しきい値以下の予め記憶した設定値であり、反射波から抽出されたＰＮ（擬似雑音）符号と、搬送波をＳＳ変調したＰＮ（擬似雑音）符号が一致したとき、受信アンテナ４ｂで受信された反射波が送信アンテナ４ａから発射された送信波のものであると判定する。
【００１５】
なお、設定値は反射波の反射点までの距離と反射波の受信レベルがセットで記憶されている。
このように送信アンテナ４ａから発射された送信波のものであることを確認する自己チェック機能により、装置の健全性を常時チェックすることができる。
【００１６】
一方、侵入物検知エリア１０における測定範囲内に侵入物が存在するときは、送信アンテナ４ａから発射された送信波が侵入物で反射されるので、反射波を受信アンテナ４ｂが受信する。受信された反射波は復調手段５ｂで逆拡散により復調される。
そして、論理処理手段２０は復調手段５ｂで抽出されたＰＮ（擬似雑音）符号と搬送波をスペクトラム拡散変調したＰＮ（擬似雑音）符号とが一致したとき、送信アンテナ４ａと一対の受信アンテナ４ｂで受信された反射波が、一対の相手の送信アンテナ４ａから発射されたものと判定する。
さらに、論理処理手段２０は図３に示す反射波との相関をとり、反射波の受信レベルが侵入物検知レベル範囲２６内の侵入物信号２４であるとき、侵入物検知エリア１０内に侵入物が存在すると判定する。
論理処理手段２０は、測定範囲例えば３ｍ〜５ｍの範囲外のデータは無視する。更に、侵入者以外の侵入物や列車等の物体については、受信レベルの違いにより判断する。
【００１７】
また、論理処理手段２０は侵入物までの距離および侵入物の速度情報を出力し、侵入物の位置、及び侵入物が動いているものか、止まっているものかを特定する機能を持つ。この機能により、より具体的な侵入物の状況・状態を確認することができるようになる。
【００１８】
以上のように、反射波が送信アンテナ４ａから発射された送信波のものであり、反射波の受信レベルが所定のレベルのとき、論理処理手段２０が測定範囲内に転落物が存在すると判定することにより、外部ノイズや天候の変化を受けることなく、侵入物検知の精度向上を図ることができる。
【００１９】
また、変調手段５ａで作成した送信波を予め設定した測定範囲内に向けて送信アンテナ４ａから発射し、侵入物が測定範囲内に存在しないときは、測定範囲内で反射した反射波を受信アンテナ４ｂが受信し、反射波の受信レベルがしきい値以下の予め記憶した設定値であり、反射波から抽出されたＰＮ（擬似雑音）符号と、搬送波をＳＳ変調したＰＮ（擬似雑音）符号が一致したとき、受信アンテナ４ｂで受信された反射波が送信アンテナ４ａから発射された送信波のものであると判定する自己チェック機能により、装置の健全性を常時チェックすることができる。
すなわち、論理処理手段２０は各復調手段５ｂで抽出されたＰＮ（擬似雑音）符号と、搬送波を拡散変調したＰＮ（擬似雑音）符号とが一致したとき、受信アンテナ４ｂが受信した反射波がそれぞれ一対の相手の送信アンテナ４ａから発射されたものであると判定する。
さらに、論理処理手段２０は反射波の受信レベルと記憶している反射点までの距離に対する受信レベルとの相関をとる。
そして、受信レベルが侵入物検知レベル範囲２６以下の侵入物信号２５の受信レベルの反射波を受信したとき、自己チェック機能によって装置の健全性を確認することができる。
【００２０】
この発明による実施の形態では、反射波が送信アンテナ４ａから発射された送信波のものであり、反射波の受信レベルが特定範囲の値であるとき、論理処理手段２０が検知範囲内に侵入物があると判定することにより、外部ノイズや天候の影響を受けることなく、侵入物検知精度の向上を図ることができる。
【００２１】
また、搬送波をＰＮ（擬似雑音）符号によりＳＳ変調して送信波を作成し、反射波から抽出したＰＮ（擬似雑音）符号と搬送波のＰＮ（擬似雑音）符号とが一致したとき、反射波が送信アンテナ４ａから発射された送信波のものであると判定するようにしたことにより、外部ノイズや天候の影響を受けることなく、侵入物の検知精度の向上を図ることができる。
【００２２】
また、送信波を予め設定した測定範囲内に向けて送信アンテナ４ａから発射し、反射した反射波の受信レベルがしきい値以下の予め記憶した設定値であり、反射波から抽出されたＰＮ（擬似雑音）符号と、搬送波をＳＳ変調したＰＮ（擬似雑音）符号とが一致したとき、受信アンテナ４ｂで受信された反射波が送信アンテナ４ａから発射された送信波のものであると判定する自己チェック機能により、装置の健全性を常時チェックすることができる。
【００２３】
この発明による実施の形態によれば、搬送波を変調した送信波を生成する変調手段５ａと、プラットホーム１に線路３と並行して延在する可動ホーム柵２からなるプラットホーム柵の線路側に設けられ前記送信波を予め設定した測定距離内に発射する送信アンテナ４ａからなる送信手段と、前記可動ホーム柵２からなるプラットホーム柵の線路側に設けられ前記送信波の反射波を受信する受信アンテナ４ｂからなる受信手段と、前記反射波を復調して前記反射波が前記送信アンテナ４ａから発射された前記送信波のものであることを確認する復調手段５ｂからなる復調手段と、前記反射波が前記送信波のものであり、前記反射波の受信レベルが所定のレベルの範囲内であるとき、侵入者、侵入物または列車の存在等の検知対象が所定の範囲に存在すると判定する論理処理手段２０とを備えたので、検知範囲を的確に設定でき、検知精度を向上できる可動ホーム柵装置を得ることができる。
【００２４】
また、この発明による実施の形態によれば、前項の構成において、前記搬送波を疑似雑音符号によりスペクトラム拡散変調して送信波を生成する変調・復調手段５からなる変調手段と、反射波から抽出した疑似雑音符号と前記搬送波の疑似雑音符号とが一致したとき、前記反射波が前記送信手段から発射された送信波のものであると判定する論理処理手段２０からなる判定手段とを備えたので、検知範囲を的確に設定でき、反射波と搬送波との疑似雑音符号の一致判定により検知精度を向上できる可動ホーム柵装置を得ることができる。
【００２５】
さらに、この発明による実施の形態によれば、前項または前々項の構成において、前記反射波が前記送信波のものであり、前記反射波の受信レベルが所定のレベルの範囲内のとき、前記測定範囲内に検知対象が存在すると判定し、前記反射波の受信レベルが前記しきい値以下で予め記憶した設定値のとき、動作が正常であると判定する論理処理手段２０を備えたので、検知範囲を的確に設定でき、検知精度を向上できるとともに、装置の健全性を適切に確認できる可動ホーム柵装置を得ることができる。
【００２６】
そして、この発明による実施の形態によれば、前３項のいずれかの構成において、前記検知対象までの距離および検知対象の速度情報を出力し、検知対象の位置および検知対象が動いているものか、止まっているものかを特定する論理処理手段２０を備えたので、検知範囲を的確に設定でき、検知精度を向上できるとともに、検知対象の位置および作動状況を適切に検出できる可動ホーム柵装置を得ることができる。
【００２７】
【発明の効果】
この発明によれば、的確な検知範囲で検知対象を検知でき、検知精度を向上できる可動ホーム柵装置を得ることができる。
【図面の簡単な説明】
【図１】この発明による実施の形態における全体構成を示すブロック図である。
【図２】図１のＩＩ−ＩＩ線における断面構成を示すブロック図である。
【図３】この発明による実施の形態における反射波の受信レベルを示す説明図である。
【符号の説明】
１ ホーム、２ 可動ホーム柵、３ 線路、４ａ 送信アンテナ、４ｂ 受信アンテナ、５ａ 変調手段、５ｂ 復調手段、１０ 侵入物検知エリア、２０ 論理処理手段、２１ 伝送処理手段、２２ 受信レベルのしきい値、２３ 列車信号、２４ 侵入者信号、２５ 侵入物信号、２６ 侵入物検知レベル範囲。BACKGROUND OF THE INVENTION
The present invention relates to a movable home fence device, and more particularly to a movable home fence device that uses SS millimeter wave radar to detect detection targets such as intruders, intruders, and trains on the home line in the movable home fence. is there.
[0001]
[Prior art]
When detecting an intruder or an intruder in the movable home fence, it is necessary to detect an object existing in the detection range without making a blind spot using a long area along the movable home fence as a detection range.
In such a situation, as a means for detecting obstacles such as an intruder, the laser beam is irradiated so as to cross the passage, and is scanned in a direction along the passage or in an oblique direction with respect to the direction. The thing is proposed (for example, refer patent document 1).
[0002]
[Patent Document 1]
JP-A-2002-220046 gazette
The intruder detection means for detecting the intruder in the detection area is a projector that is a transmission type sensor mounted on one of the pair of door pocket fences 1 and a light receiving device that is a transmission type sensor mounted on the other door rack fence 1. The detector is configured so that the detection light from the projector is received by the light receiver through the detection region, and the detection light from one projector is blocked by an intruder such as a human in the detection region. I try to detect things.
[0004]
[Problems to be solved by the invention]
Since the conventional movable home fence device is configured as described above, it can detect only the range of points and lines because it detects light from the projector by blocking the intruder. However, there was a problem that a blind spot was always created and there was a detection area that could not be detected.
[0005]
The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a movable home fence device capable of detecting a detection target in an accurate detection range and improving detection accuracy. It is what.
[0006]
[Means for Solving the Problems]
In the movable platform fence device according to the present invention, the platform is provided on the line side of the platform fence that extends in parallel with the line, and the transmission means for emitting a transmission wave that modulates the carrier wave within a preset measurement distance; A receiving means for receiving the reflected wave of the transmission wave provided on the track side of the fence; and a demodulation for demodulating the reflected wave and confirming that the reflected wave is that of the transmission wave emitted from the transmitting means And logic processing means for determining that the detection target exists in the predetermined range when the reflected wave is of the transmission wave and the reception level of the reflected wave is within the predetermined level range. Is.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
An embodiment according to the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a configuration according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the embodiment according to the present invention. FIG. 3 is an explanatory diagram showing the reception level of the reflected wave in the embodiment according to the present invention.
[0008]
In FIG. 1, the movable platform fence 2 extends to the platform 1 in parallel with the rail of the track 3, and a part thereof moves in parallel with the track 3 to open and close the passenger passage. There is an intruder detection area 10 on the rail side of the track 3 when viewed from the movable home fence 2.
A transmission antenna 4 a and a reception antenna 4 b are provided on the rail side of the track 3 at the fixed portion of the movable home fence 2.
[0009]
The modulation means 5a creates a transmission wave by performing spread spectrum (SS) modulation on a millimeter wave carrier wave with a PN (pseudo noise) code.
For example, as shown in FIG. 1, the transmission antenna 4a having a detection range of 3m to 5m ahead detects the fallen object within a predetermined measurement distance range of the transmission wave generated by the modulation means 5a. Fire towards 10 In this case, the range of the measurement distance is the detection range of the transmission antenna 4a.
Similarly, the reception antenna 4b receives a reflected wave reflected from an intruder, an intruder, or a train. The demodulating means 5b demodulates the reflected wave received by the receiving antenna 4b by despreading.
[0010]
When the PN (pseudo-noise) code extracted from the reflected wave matches the PN (pseudo-noise) code of the carrier wave, the logic processing means 20 determines that the reflected wave is that of the transmitted wave emitted from the transmitting antenna 4a. In addition, when the reception level of the reflected wave is within a predetermined level, it is determined that an intruder exists within the measurement range.
The transmission means 21 transmits the determination result of the logic processing means 20, and controls a guidance control device (not shown), a crossing control device (not shown), and the like.
[0011]
Next, the operation will be described.
In FIG. 1, the transmission wave created by the modulation means 5a is emitted from the transmission antenna 4a toward a measurement range within a preset measurement distance. When an intruding object such as a fallen object does not exist within the measurement range, the reflected reflected wave is received by the receiving antenna 4b, and the reflected wave is demodulated by despreading by the demodulation means 5b.
[0012]
FIG. 3 is an explanatory diagram showing the reception level of the reflected wave stored in the logic processing means 20.
In FIG. 3, the threshold value 22 of the reception level of the reflected wave discriminates a train signal 23, an intruder signal 24 and an intruder signal 25 which will be described later.
The train signal 23 indicates a reflected wave signal reflected from the train, and the signal level is equal to or higher than the threshold value 22.
The intruder signal 24 indicates the reception level of the reflected wave reflected from the intruder into each intruder detection area 10.
The intruder signal 25 indicates the reception level of the reflected wave reflected from the intruder into each intruder detection area 10.
The intruder detection level range 26 determines that an intruder exists when the reception level is within this range.
[0013]
1 to 3, the transmission wave created by the modulation means 5a is emitted from each transmission antenna 4a toward the intruder detection area 10 set in advance.
When there is no intruder in the intruder detection area 10, the reflected wave reflected from the existing equipment is received by the transmitting antenna 4a and each pair of receiving antennas 4b.
The received reflected waves are demodulated by despreading by the demodulating means 5b corresponding to the receiving antenna 4b.
[0014]
Then, in the logic processing means 20, as shown in FIG. 3, the reflected wave reception level is a set value stored in advance below the threshold value, and the PN (pseudo-noise) code extracted from the reflected wave and the carrier wave are SS. When the modulated PN (pseudo-noise) code matches, it is determined that the reflected wave received by the receiving antenna 4b is that of the transmitted wave emitted from the transmitting antenna 4a.
[0015]
The set value stores the distance to the reflection point of the reflected wave and the reception level of the reflected wave as a set.
Thus, the soundness of the apparatus can be constantly checked by the self-check function for confirming that the transmission wave is emitted from the transmission antenna 4a.
[0016]
On the other hand, when there is an intruder in the measurement range in the intruder detection area 10, the transmission wave emitted from the transmission antenna 4a is reflected by the intruder, so that the reception antenna 4b receives the reflected wave. The received reflected wave is demodulated by despreading by the demodulation means 5b.
When the PN (pseudo-noise) code extracted by the demodulation means 5b matches the PN (pseudo-noise) code obtained by performing spread spectrum modulation on the carrier wave, the logic processing means 20 receives the signal by the transmitting antenna 4a and the pair of receiving antennas 4b. It is determined that the reflected wave thus emitted is emitted from the transmission antenna 4a of the pair of opponents.
Further, the logic processing means 20 correlates with the reflected wave shown in FIG. 3, and when the reflected wave reception level is the intruder signal 24 in the intruder detection level range 26, the intruder detection area 10 is intruded. Is determined to exist.
The logic processing means 20 ignores data outside the measurement range, for example, 3 m to 5 m. Further, intruders other than intruders and objects such as trains are judged based on the difference in reception level.
[0017]
Further, the logic processing means 20 has a function of outputting the distance to the intruder and the speed information of the intruder, and specifying the position of the intruder and whether the intruder is moving or stopped. This function makes it possible to check the status and state of a more specific intruder.
[0018]
As described above, when the reflected wave is a transmitted wave emitted from the transmission antenna 4a and the reception level of the reflected wave is a predetermined level, the logic processing unit 20 determines that a fallen object exists within the measurement range. Thus, the accuracy of intrusion detection can be improved without receiving external noise or changes in weather.
[0019]
Further, when the transmission wave created by the modulation means 5a is emitted from the transmission antenna 4a toward the preset measurement range and the intruder does not exist within the measurement range, the reflected wave reflected in the measurement range is received by the reception antenna. 4b is a set value that is received in advance and the reception level of the reflected wave is a threshold value or less, and a PN (pseudo-noise) code extracted from the reflected wave and a PN (pseudo-noise) code obtained by SS-modulating the carrier wave When they match, the soundness of the apparatus can be constantly checked by the self-check function that determines that the reflected wave received by the receiving antenna 4b is that of the transmitted wave emitted from the transmitting antenna 4a.
That is, when the PN (pseudo-noise) code extracted by each demodulating means 5b matches the PN (pseudo-noise) code obtained by spreading the carrier wave, the logic processing means 20 receives the reflected wave received by the receiving antenna 4b. It is determined that the light is emitted from the pair of transmitting antennas 4a.
Further, the logic processing means 20 obtains a correlation between the reception level of the reflected wave and the reception level with respect to the distance to the stored reflection point.
And when the reflected wave of the reception level of the intrusion signal 25 whose reception level is the intrusion detection level range 26 or less is received, the soundness of the apparatus can be confirmed by the self-check function.
[0020]
In the embodiment according to the present invention, when the reflected wave is a transmitted wave emitted from the transmission antenna 4a and the reception level of the reflected wave is a value within a specific range, the logic processing means 20 is intruded within the detection range. It is possible to improve the accuracy of intrusion detection without being affected by external noise or weather.
[0021]
When a carrier wave is SS-modulated with a PN (pseudo-noise) code to generate a transmission wave, and the PN (pseudo-noise) code extracted from the reflected wave matches the PN (pseudo-noise) code of the carrier wave, By determining that the transmission wave is emitted from the transmission antenna 4a, the detection accuracy of the intruder can be improved without being affected by external noise or weather.
[0022]
The transmission wave is emitted from the transmission antenna 4a toward the preset measurement range, and the reception level of the reflected wave reflected is a preset value stored in advance that is equal to or lower than the threshold value, and the PN ( When the pseudo-noise) code matches the PN (pseudo-noise) code obtained by SS-modulating the carrier wave, the self that determines that the reflected wave received by the receiving antenna 4b is that of the transmitting wave emitted from the transmitting antenna 4a The check function can always check the soundness of the device.
[0023]
According to the embodiment of the present invention, the modulation means 5a for generating a transmission wave modulated by a carrier wave, and the movable platform fence 2 extending in parallel to the platform 3 on the platform 1 are provided on the line side of the platform fence. From a transmission means comprising a transmission antenna 4a that emits the transmission wave within a preset measurement distance, and from a reception antenna 4b that is provided on the line side of the platform fence comprising the movable platform fence 2 and receives a reflected wave of the transmission wave Receiving means, demodulating means comprising demodulating means 5b for demodulating the reflected wave and confirming that the reflected wave is that of the transmitted wave emitted from the transmitting antenna 4a, and the reflected wave being transmitted When the reception level of the reflected wave is within a predetermined level, the detection target such as an intruder, an intruder, or a train is within the predetermined range. Since a logic processing unit 20 determines to standing can be accurately set a detection range, it is possible to obtain a movable platform fence device capable of improving the detection accuracy.
[0024]
According to the embodiment of the present invention, in the configuration of the preceding paragraph, the carrier wave is extracted from the reflected wave and the modulation means including the modulation / demodulation means 5 for generating a transmission wave by performing spread spectrum modulation on the carrier wave with a pseudo-noise code. Since the pseudo-noise code and the pseudo-noise code of the carrier wave coincide with each other, since the reflected wave comprises a determination means comprising a logic processing means 20 for determining that the reflected wave is that of the transmission wave emitted from the transmission means, A movable home fence apparatus can be obtained in which the detection range can be accurately set and the detection accuracy can be improved by determining the coincidence of the pseudo noise code between the reflected wave and the carrier wave.
[0025]
Furthermore, according to an embodiment of the present invention, in the configuration of the preceding item or the preceding item, when the reflected wave is that of the transmitted wave and the reception level of the reflected wave is within a predetermined level range, Since it has been determined that there is a detection target within the measurement range and the reception level of the reflected wave is a setting value stored in advance below the threshold value, the logic processing means 20 is provided to determine that the operation is normal A movable home fence device can be obtained in which the detection range can be accurately set, the detection accuracy can be improved, and the soundness of the device can be appropriately confirmed.
[0026]
According to the embodiment of the present invention, in any one of the configurations of the preceding three items, the distance to the detection target and the speed information of the detection target are output, and the position of the detection target and the detection target are moving. Since the logic processing means 20 that identifies whether the object is stationary or not is provided, the movable home fence device that can accurately set the detection range, improve the detection accuracy, and appropriately detect the position and the operation state of the detection target Can be obtained.
[0027]
【The invention's effect】
According to the present invention, it is possible to obtain a movable home fence device that can detect a detection target in an accurate detection range and improve detection accuracy.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration according to an embodiment of the present invention.
2 is a block diagram showing a cross-sectional configuration taken along the line II-II in FIG. 1;
FIG. 3 is an explanatory diagram showing a reception level of a reflected wave in the embodiment according to the invention.
[Explanation of symbols]
1 home, 2 movable home fence, 3 tracks, 4a transmitting antenna, 4b receiving antenna, 5a modulating means, 5b demodulating means, 10 intruder detection area, 20 logic processing means, 21 transmission processing means, 22 threshold of receiving level , 23 Train signal, 24 Intruder signal, 25 Intruder signal, 26 Intruder detection level range.

Claims (4)

搬送波を変調した送信波を生成する変調手段と、プラットホームに線路と並行して延在するプラットホーム柵の線路側に設けられ前記送信波を予め設定した測定距離内に発射する送信手段と、前記プラットホーム柵の線路側に設けられ前記送信波の反射波を受信する受信手段と、前記反射波を復調して前記反射波が前記送信手段から発射された前記送信波のものであることを確認する復調手段と、前記反射波が前記送信波のものであり、前記反射波の受信レベルが所定のレベルの範囲内であるとき、検知対象が所定の範囲に存在すると判定する論理処理手段とを備えた可動ホーム柵装置。Modulation means for generating a transmission wave in which a carrier wave is modulated, transmission means provided on the line side of a platform fence extending in parallel with the line on the platform, and transmitting the transmission wave within a preset measurement distance; and the platform Receiving means for receiving the reflected wave of the transmitted wave provided on the track side of the fence, and demodulating for confirming that the reflected wave is that of the transmitted wave emitted from the transmitting means by demodulating the reflected wave And logic processing means for determining that the detection target exists in the predetermined range when the reflected wave is of the transmission wave and the reception level of the reflected wave is within the predetermined level range. Movable home rail device. 搬送波を疑似雑音符号によりスペクトラム拡散変調して送信波を生成する変調手段と、反射波から抽出した疑似雑音符号と前記搬送波の疑似雑音符号とが一致したとき、前記反射波が送信手段から発射された送信波のものであると判定する判定手段とを備えたことを特徴とする請求項１に記載の可動ホーム柵装置。When the modulation means for generating a transmission wave by performing spread spectrum modulation on a carrier wave with a pseudo-noise code and the pseudo-noise code extracted from the reflected wave coincide with the pseudo-noise code of the carrier wave, the reflected wave is emitted from the transmission means. The movable home fence apparatus according to claim 1, further comprising: a determination unit that determines that the transmission wave is of a transmitted wave. 前記反射波が前記送信波のものであり、前記反射波の受信レベルが所定のレベルの範囲内のとき、前記測定範囲内に検知対象が存在すると判定し、前記反射波の受信レベルが前記しきい値以下で予め記憶した設定値のとき、動作が正常であると判定する論理処理手段を備えたことを特徴とする請求項１または請求項２に記載の可動ホーム柵装置。When the reflected wave is that of the transmitted wave and the reception level of the reflected wave is within a predetermined level range, it is determined that a detection target exists within the measurement range, and the reception level of the reflected wave is The movable home fence apparatus according to claim 1 or 2, further comprising logic processing means for determining that the operation is normal when the set value is stored in advance below the threshold value. 前記検知対象までの距離および検知対象の速度情報を出力し、検知対象の位置および検知対象が動いているものか、止まっているものかを特定する論理処理手段を備えた請求項１ないし請求項３のいずれかに記載の可動ホーム柵装置。The distance from the said detection target and the speed information of a detection target are output, The logic processing means which identifies whether the position of a detection target and the detection target are moving or stopped is provided. The movable home fence apparatus in any one of 3.
JP2003167194A 2003-06-12 2003-06-12 Movable home fence device Expired - Fee Related JP3872771B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006232037A (en) * 2005-02-23 2006-09-07 Nippon Signal Co Ltd:The Vehicle side lamp, and train door opening/closing detection device using the same
JP2010269729A (en) * 2009-05-22 2010-12-02 Mitsubishi Electric Corp Getting over detection device of safety means for platform
JP2011016421A (en) * 2009-07-08 2011-01-27 Higashi Nippon Transportec Kk Obstacle detector, platform door system having the same and obstacle detecting method
JP2018131071A (en) * 2017-02-15 2018-08-23 日本信号株式会社 System and method for object detection
CN110126885A (en) * 2018-02-02 2019-08-16 保定市天河电子技术有限公司 A kind of railway circumference intrusion target monitoring method and system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006232037A (en) * 2005-02-23 2006-09-07 Nippon Signal Co Ltd:The Vehicle side lamp, and train door opening/closing detection device using the same
JP2010269729A (en) * 2009-05-22 2010-12-02 Mitsubishi Electric Corp Getting over detection device of safety means for platform
JP2011016421A (en) * 2009-07-08 2011-01-27 Higashi Nippon Transportec Kk Obstacle detector, platform door system having the same and obstacle detecting method
JP2018131071A (en) * 2017-02-15 2018-08-23 日本信号株式会社 System and method for object detection
CN110126885A (en) * 2018-02-02 2019-08-16 保定市天河电子技术有限公司 A kind of railway circumference intrusion target monitoring method and system
CN110126885B (en) * 2018-02-02 2022-04-22 保定市天河电子技术有限公司 Railway perimeter intrusion target monitoring method and system

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