JPS59210386A - Identifying device of moving body - Google Patents
Identifying device of moving bodyInfo
- Publication number
- JPS59210386A JPS59210386A JP59088046A JP8804684A JPS59210386A JP S59210386 A JPS59210386 A JP S59210386A JP 59088046 A JP59088046 A JP 59088046A JP 8804684 A JP8804684 A JP 8804684A JP S59210386 A JPS59210386 A JP S59210386A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- transmitting
- transponder
- receiving
- polarization
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/024—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects
- G01S7/025—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects involving the transmission of linearly polarised waves
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、最大識別可能速度が大きくなるようにした
マイクロ波移動体識別装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microwave mobile object identification device in which the maximum identification speed is increased.
マイクロ波を利用した移動体識別装置としては、第１図
に示す構成のものが知られておシ、この第１図において
、Ａは地上装置である。この地」二装置Ａ側でマイクロ
波発振器１から発生されたマイクロ波キャリアｆ はハ
イブリッド２゜３を通して変調器４に送られる。変調器
４には掃引波発生器５から掃引波信号ｆ８が加えられて
寂り、この掃引波信号ｆ によりマイクロ波キャリアｆ
。が振幅変調され、その振幅変調された変調信号（ｆｏ
＋１８）がハイブリッド６、増幅器７＼サーキユレータ
８を通して送受信アンテナ９から質問信号として応答器
Ｂに向かって放射される。As a mobile object identification device using microwaves, one having the configuration shown in FIG. 1 is known. In FIG. 1, A is a ground device. A microwave carrier f generated from a microwave oscillator 1 on the side of the device A is sent to a modulator 4 through a hybrid 2.3. A sweep wave signal f8 is applied to the modulator 4 from the sweep wave generator 5, and this sweep wave signal f generates a microwave carrier f.
. is amplitude modulated, and its amplitude modulated modulation signal (fo
+18) is radiated toward the transponder B as an interrogation signal from the transmitting/receiving antenna 9 through the hybrid 6, amplifier 7\circulator 8.
応答器Ｂでは、送受信アンテナ１ｏでこの質問信号を受
信し、変復調器１１で復調した後共振子群１２に加える
。この際、応答器Ｂが識別圏内にあれば、共振子群１２
の共振周波数でリンギングが発生する。これを変復調器
１１で変刺した後、送受信アンテナ１０から反射信号（
ｆｏ±ｆｔ）として地上装置Ａに返信される。In the transponder B, this interrogation signal is received by the transmitting/receiving antenna 1o, demodulated by the modem 11, and then added to the resonator group 12. At this time, if the transponder B is within the identification range, the resonator group 12
Ringing occurs at the resonant frequency of. After this is modulated by the modem 11, the reflected signal (
fo±ft) is returned to the ground device A.
地上装置Ａでは、この反射信号を送受信アンテナ９で受
信した後、混合器１３に送られる。In the ground equipment A, this reflected signal is received by the transmitting/receiving antenna 9 and then sent to the mixer 13.
混合器１３にはマイクロ波発振器１からハイブリッド２
を通してマイクロ波キャリアｆ。が送られておシ、この
マイクロ波キャリアｆと受信信号（ｆｏ±ｆ、 ）とを
混合して、混合信号ｆ、をパントハスフィルタ１４を通
して混合器１５に送る。The mixer 13 includes microwave oscillators 1 to hybrid 2.
Through the microwave carrier f. is sent, this microwave carrier f and the received signal (fo±f, ) are mixed, and the mixed signal f is sent to the mixer 15 through the Pantohas filter 14.
混合器１５は掃引波発生器５からの掃引波信号ｆ３トパ
ンドパスフィルタ１４の出力（ｆ、）とを混合して両信
号の周数数の差（ｆ８−ｆ、、）を検出するだめの信号
処理を行なう。The mixer 15 mixes the sweep wave signal f3 from the sweep wave generator 5 with the output (f,) of the topand pass filter 14 and detects the difference in frequency (f8 - f, ) between the two signals. Performs signal processing.
このように、従来の移動体識別装置における地上装置Ａ
としては、一種のＣＷレーダに近い構成となっている。In this way, the ground device A in the conventional mobile object identification device
As such, it has a configuration similar to a type of CW radar.
従来の移動体識別装置の欠点としては、応答器の偏波面
が直交した送信アンテナ、受信アンテナを別々にした場
合、応答器の取付は、質問装置の送信アンテナの偏波面
に応答器の受信アンテナの偏波面が一致するようになさ
れなければならないため、応答器の取付力に制約があり
不便である点をあげることができる。A drawback of conventional mobile object identification devices is that when the transponder's polarization plane is orthogonal to the transmitting antenna and receiving antenna are separate, the transponder is installed so that the transponder's receiving antenna is aligned with the polarization plane of the interrogator's transmitting antenna. Since the planes of polarization of the transponder must match, the mounting force of the transponder is restricted, which is inconvenient.
この発明は、上記従来の欠点を除去するためになされた
もので、地上装置の送信信号と受信信号との偏波面を直
交させることにより、アンテナ系切換回路を除去できる
とともに、最大識別可能速度が大きい移動体識別装置を
提供することを目的とする。This invention was made in order to eliminate the above-mentioned conventional drawbacks, and by orthogonalizing the polarization planes of the transmitted signal and the received signal of the ground equipment, it is possible to eliminate the antenna system switching circuit and to increase the maximum discriminable speed. The purpose is to provide a large mobile object identification device.
以下、この発明の移動体識別装置の実施例について図面
に基づき説明する。第２図はその一実施例の構成を示す
ブロック図である。この第２図において、２１は貨車、
コンテナなどの移動体を示し、２２は移動体通過路を示
すＱ移動体２１の一方の側面に１個のみの応答器Ｃが取
シ付けられている。Embodiments of the mobile object identification device of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing the configuration of one embodiment. In this Figure 2, 21 is a freight car;
A moving object such as a container is shown, and 22 indicates a path through which the moving object passes.Only one transponder C is attached to one side of the Q moving object 21.
１対の移動体通過路２２の外側には第１の質問装置の第
１のアンテナ装置２３ａ、および第２の質問装置の第２
のアンテナ装置２３ｂが設置されている。アンテナ装置
２３ａは送信アンテナ２３ａ１と受信アンテナ２３ａ２
が含まれている。同様にして、第２アンテナ装置２３ｂ
は送信アンテナ２３ｂ、、受信アンテナ２．’ｌｂ２が
含まれている。A first antenna device 23a of the first interrogation device and a second antenna device 23a of the second interrogation device are located outside the pair of mobile object passageways 22.
An antenna device 23b is installed. The antenna device 23a includes a transmitting antenna 23a1 and a receiving antenna 23a2.
It is included. Similarly, the second antenna device 23b
are transmitting antenna 23b, receiving antenna 2. 'lb2 is included.
送信アンテナ２３ａ１と受信アンテナ２３ａ２は互いに
偏波面が直交関係にある。送信アンテナ２３ｂ１ ＋受
信アンテナ２３ｂ２についても同様である。The transmitting antenna 23a1 and the receiving antenna 23a2 have mutually orthogonal polarization planes. The same applies to the transmitting antenna 23b1 + receiving antenna 23b2.
これらの第１アンテナ装置２３ａ、第２７ンテナ装置２
３ｂはそれぞれ一つのレドームの中に入れ、外ｄ上はそ
れぞれ１個のアンテナにすることができる。These first antenna device 23a and 27th antenna device 2
Each of antennas 3b can be placed in one radome, and each of the antennas on the outside d can be one antenna.
応答器Ｃは巣３図に示すように構成されている。この第
３図において、３０ｈ、３０ｂはいずれも送受共用アン
テナである。アンテナ、’ｌ Ｏａ 。The transponder C is constructed as shown in Figure 3. In FIG. 3, 30h and 30b are both antennas used for transmitting and receiving. Antenna, 'l Oa.
３ｏ ｂも偏波面が互いに直交関係にある。このアンテ
ナ３０ ａと３ｏ ｂ ｉｄ整合回路。１１で合成する
ようになっており、この整合回路、９ノは変復調器３２
を通して共振子群３，９に接続さノ゛シている。アンテ
ナ３０ ａ 、 ３０ ｂは、そのうちの少なくとも一
方が質問装置からの質問信号を・受信する。１ブ乞、共
振子群３３が共振した場合、応答信号は、アンテナ３６
＠ 、 、’（Ｏｂの両方力１ら反射信号として放射
される（偏波面は直交している）。3o b also have polarization planes that are orthogonal to each other. This antenna 30a and 3o b id matching circuit. No. 11 is designed to synthesize the matching circuit, and No. 9 is a modulator/demodulator 32.
It is connected to the resonator groups 3 and 9 through the resonator. At least one of the antennas 30a and 30b receives an interrogation signal from an interrogation device. When the resonator group 33 resonates, the response signal is sent to the antenna 36.
@ , , '(Both forces 1 of Ob are radiated as reflected signals (the planes of polarization are orthogonal).
次に、以上のように構成されたこの発明の移動体識別装
置の動作について説明する。まず、送信アンテナ２３ａ
１と受信アンテナ２．９８２および送信アンテナ２３ｂ
ｌ と受信アンテナ２３ｂ２はそれぞれ互いに直交関係
にあり、したがって、たとえば、送信アンテナ２．９
ａ １７５”ら発射された電波は受信アンチブー２．９
ａ２＋２３ｂ２には受信されない。捷だ、送信アンテナ
２３ｂ１から発射された電波についても１司４采である
。Next, the operation of the mobile object identification device of the present invention configured as described above will be explained. First, the transmitting antenna 23a
1 and receiving antenna 2.982 and transmitting antenna 23b
l and the receiving antenna 23b2 are each orthogonal to each other, so that, for example, the transmitting antenna 2.9
The radio waves emitted from A 175" receive anti-boo 2.9
It is not received by a2+23b2. As for the radio waves emitted from the transmitting antenna 23b1, there are also 1 and 4 waves.
送信アンテナ２３ａ１ と２３ｂ１は篩波面カニ一致し
ているので電波が同時に４射されていると、移動体２１
が存在しない場合に限９、電磁場が乱れることがあるが
、これはシステム上致命的欠陥にならない。そして、移
動体２１力；第１アンテナ装置２．９ ａと第２アンテ
ナ装ｆＷ２．ｑｂの間に入ると、アンテナビームカ玉し
ゃ断され、送信アンテナ２３ＩＬＸから発射された１民
波はＬも答器Ｃに入る一方、送信アンテナ２３ｂｌ′ｌ
Ｊ′−ら発射された電波は移動体２ノのａｌｌ ’１ｌ
ｉｉで）叉Ｓ−ｔされる。かくして、第１アンテナ装置
２３ ａ ） Ｔ）％ ２アンテナ装置２３ｂの両アン
テナ装装置１：１１らｌｉｌ ＠に質問信号を出すこと
ができる。Since the transmitting antennas 23a1 and 23b1 have the same sieve wave surface, if four radio waves are emitted at the same time, the moving object 21
9, the electromagnetic field may be disturbed, but this is not a fatal flaw in the system. Then, the moving body 21 has a first antenna device 2.9 a and a second antenna device fW2. qb, the antenna beam is cut off, and the first civilian wave emitted from the transmitting antenna 23ILX also enters the answering device C, while the transmitting antenna 23bl'l
The radio waves emitted from J'- et al.
ii) and S-t. Thus, an interrogation signal can be issued to both antenna devices 1:11 and lil@ of the first antenna device 23a)T)%2 antenna device 23b.
一方、応答器Ｃは送受共用アンテナ、？θａ。On the other hand, transponder C has a common antenna for transmitting and receiving, ? θa.
、”ｔ ａ ｂを整合回路３Ｉで合成することによって
、応答器Ｃとしては、互いに直交な偏波面のうち、どち
らにもｉ４することになるので、取付方に対して良好な
応答器となる。, ``By combining t a b in the matching circuit 3I, the transponder C will be i4 in either of the mutually orthogonal polarization planes, so it will be a good transponder for the mounting method. .
すなわち、従来の応答器では、第４図に示すごとく、取
付面上でθたけ傾斜させると、Ｃｔ１Ｓθにしたがって
、受信レベルが低下するが、応答器Ｃを第３図に示すよ
うに偏波面が直交する２つの送受共用アンテナで構成す
ることにより、ｆＴ魚（θ−４５°）（０≦θ≦９０°
）になる。That is, in the conventional transponder, when the transponder is tilted by θ on the mounting surface as shown in Fig. 4, the reception level decreases according to Ct1Sθ, but when transponder C is tilted by an angle of θ as shown in Fig. By configuring two orthogonal transmitting and receiving antennas, fT fish (θ-45°) (0≦θ≦90°
)become.
すなわち、送受共用アンテナ３０ ａ 、 ３０ ｂの
うちの一方の偏波面が質問信号の偏波面と一致している
場合は、その一致しているアンテナで質問信号を受信し
、また、質問信号の偏波面が送受共用アンテナ３０ ａ
、 ３０ ｂのどちらにも一致してしない場合は、質
問信号は両アンテナの偏波面と同成分が存在するため、
両アンテナによりその同成分の質問信号を受信すること
ができる。さらに、応答信号は両アンテナから放射され
、質問装置の受信アンテナでその受信アンテナのυｉ８
波而と面じ偏波成分応答イ１ｉ÷」が受イ、−ｊされる
。したがって、応答器の送受共用アンテナ３０ ａ 、
；？ Ｏｂの一方の偏波面と質問信号の偏波面を一致
させなくても質問装置と応答器との信号送受が可能であ
るため、応答器のｊ１′ｙ、何面上での取付方に自由が
きくことになる。That is, if the polarization plane of one of the transmitting/receiving antennas 30 a and 30 b matches the polarization plane of the interrogation signal, the interrogation signal is received by the matching antenna, and the interrogation signal is also polarized. The wave front is an antenna 30 a that is used for both transmission and reception.
, 30b, since the interrogation signal has the same component as the polarization plane of both antennas,
Both antennas can receive interrogation signals with the same components. Furthermore, the response signal is radiated from both antennas, and the receiving antenna of the interrogator receives the response signal at υi8 of the receiving antenna.
The polarized wave component response 1i÷'' is received and -j. Therefore, the transmitting/receiving antenna 30 a of the transponder,
;? Since it is possible to send and receive signals between the interrogator and the transponder even if one polarization plane of Ob and the polarization plane of the interrogation signal do not match, there is freedom in mounting the transponder on any plane. I will listen to it.
以上のように、この発明の移動体識別装置によれば、送
信アンテナと受信アンテナを偏波面が互いに直交するよ
うにした１対のアンテナ装置を移動体通路を挾んで互い
にほぼ向き合うように配置するとともに、移動体には地
上側の質問信号に応答する応答器を移動体通路側の側面
に設け、この応答器のアンテナは偏波１１］１が互いに
直交した第１．第２の送受共用アンテナを合成して一つ
のアンテナ系とするようにしたので、アンテナ装置にお
ける送信アンテナから常時１１イ波を発射することがで
きる。As described above, according to the mobile object identification device of the present invention, a pair of antenna devices including a transmitting antenna and a receiving antenna whose polarization planes are orthogonal to each other are arranged so as to be substantially facing each other across the path of the mobile object. At the same time, a transponder for responding to interrogation signals from the ground side is provided on the side of the moving body on the side of the moving body passage, and the antenna of this transponder has a first... Since the second transmitting/receiving antennas are combined into one antenna system, 11 waves can be emitted from the transmitting antenna of the antenna device at all times.
したがって、最大識別可能速度を大きくできる。咬・た
、移動体の速度が限定されている場合には、従来の場合
よシも多くのデータを受信できるので、統計的データ処
理に極めて有利となる。Therefore, the maximum discriminable speed can be increased. In addition, when the speed of the moving object is limited, more data can be received than in the conventional case, which is extremely advantageous for statistical data processing.
また、この発明によれば、両アンテナ装置の送信アンテ
ナの偏波面が互いに直交しているため、例え側送信アン
テナが常時出力を出していても受信系を損・高さぜるこ
とはない。Further, according to the present invention, since the polarization planes of the transmitting antennas of both antenna devices are orthogonal to each other, even if the side transmitting antenna always outputs an output, the receiving system will not be damaged or increased.
更に、この発明では偏波面が互に直交する送受共用アン
テナを応答器に持たせたことによシ、応答器の取付時に
質問信号と応答信号の偏波面を考慮しなくてもよいため
応答器の取付が極めて容易に々る。Furthermore, in this invention, since the transponder is equipped with a transmitting and receiving antenna whose polarization planes are orthogonal to each other, there is no need to consider the polarization planes of the interrogation signal and the response signal when installing the transponder. Installation is extremely easy.
第１図は従来の移動体識別装置のブロック図、第２図は
この発明の移動体識別装置の一実施例の構成を示すブロ
ック図、第３図は同上移動体識別装置ｔにおける応答器
の構成を示すブロック図、第４図は従来の移動体識別装
置に使用される応答器を傾斜させた場合のレベル低下を
生じる状態を説明するための図である。
２１・・・移動体、２２・・移動体通過路、２３ａ。
２３ ｂ−・・アンテナ装置、２３ａ１．．２ 、？
ｂ１＝・送信アンテナ、２３１１２ 、２３ ｂ２・
・・受信アンテナ、３０ ａ 、 、９０ ｂ・・・送
受共用アンテナ、３１・・・整合回路、３２・・・変復
ルＭ器、３３・・・共振子群。FIG. 1 is a block diagram of a conventional mobile object identification device, FIG. 2 is a block diagram showing the configuration of an embodiment of the mobile object identification device of the present invention, and FIG. 3 is a block diagram of a transponder in the above mobile object identification device t. FIG. 4, a block diagram showing the configuration, is a diagram for explaining a state in which a level decrease occurs when a transponder used in a conventional mobile object identification device is tilted. 21... Moving body, 22... Moving body passing path, 23a. 23b--Antenna device, 23a1. ．． 2,?
b1=・Transmission antenna, 23112, 23 b2・
. . . Reception antenna, 30 a , , 90 b . . . Transmission and reception antenna, 31 . . . Matching circuit, 32 .
Claims (1)
が互いに直交する送信アンテナおよび受信アンテナを有
する質問装置と、移動体の側面に取り伺けられ、偏波面
が互に直交する偏波面を持つ第１および第２の送信受信
共用アンテナを含む応答器とを具備する移動体識別装置
。an interrogation device having a transmitting antenna and a receiving antenna, which are located on the side of a moving object path through which the moving object passes, and whose planes of polarization are orthogonal to each other; A mobile object identification device comprising: a transponder including first and second shared transmitting/receiving antennas having polarization planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59088046A JPS59210386A (en) | 1984-05-01 | 1984-05-01 | Identifying device of moving body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59088046A JPS59210386A (en) | 1984-05-01 | 1984-05-01 | Identifying device of moving body |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56019920A Division JPS57134718A (en) | 1981-02-13 | 1981-02-13 | Mobile body discriminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59210386A true JPS59210386A (en) | 1984-11-29 |
Family
ID=13931887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59088046A Pending JPS59210386A (en) | 1984-05-01 | 1984-05-01 | Identifying device of moving body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59210386A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013256181A (en) * | 2012-06-12 | 2013-12-26 | Mitsubishi Electric Corp | Mobile body information communication apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4879091A (en) * | 1972-01-26 | 1973-10-23 | ||
| JPS5096388A (en) * | 1973-12-27 | 1975-07-31 |
-
1984
- 1984-05-01 JP JP59088046A patent/JPS59210386A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4879091A (en) * | 1972-01-26 | 1973-10-23 | ||
| JPS5096388A (en) * | 1973-12-27 | 1975-07-31 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013256181A (en) * | 2012-06-12 | 2013-12-26 | Mitsubishi Electric Corp | Mobile body information communication apparatus |
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