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JP6251768B2 - Wireless device approach detection method - Google Patents
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JP6251768B2 - Wireless device approach detection method - Google Patents

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JP6251768B2
JP6251768B2 JP2016065892A JP2016065892A JP6251768B2 JP 6251768 B2 JP6251768 B2 JP 6251768B2 JP 2016065892 A JP2016065892 A JP 2016065892A JP 2016065892 A JP2016065892 A JP 2016065892A JP 6251768 B2 JP6251768 B2 JP 6251768B2
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胡發基
林清長
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瀚誼世界科技股▲フン▼有限公司
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本発明は位置検知方法、特に無線装置の位置と距離を正確に割り出す接近検知方法に関するものである。   The present invention relates to a position detection method, and more particularly to an approach detection method for accurately determining the position and distance of a wireless device.

無線装置の位置と距離を検知する実際の応用技術において、無線装置から発せられた高周波信号の信号強度が強いときは、高周波信号を発射する装置そのもの、または周囲の磁場や障害物の影響で、高周波信号の信号強度と距離の間には何ら対応性や相関性がないことは、図１に示すとおりである。しかし、無線装置から発せられた高周波信号の信号強度が微弱のとき、強度の閾値を設定して高周波信号を選別すると、高周波信号の信号強度と距離の間に相関関係が生じるのは図２に示すとおりであり、もう一歩進めれば、無線装置の位置と距離を判断できるようになるが、高周波信号の信号強度が微弱なので、無線装置が周囲に存在するか、或いはその状態がどんなものかは判断できず、それゆえに、無線装置の信号強度をどのように調整して正確な位置を割り出せるようにするかは、各界で解決が待たれる課題となっている。   In the actual application technology that detects the position and distance of the wireless device, when the signal strength of the high-frequency signal emitted from the wireless device is strong, the device itself that emits the high-frequency signal, or the influence of the surrounding magnetic field and obstacles, As shown in FIG. 1, there is no correspondence or correlation between the signal intensity and the distance of the high-frequency signal. However, when the signal strength of the high-frequency signal emitted from the wireless device is weak, a correlation between the signal strength of the high-frequency signal and the distance is generated in FIG. If you go one step further, you will be able to determine the position and distance of the wireless device, but the signal strength of the high-frequency signal is weak, so the wireless device is in the surroundings or what the state is Therefore, how to adjust the signal strength of the wireless device so that an accurate position can be determined is a problem that needs to be solved in various fields.

本発明は、
無線信号トランスミッターが第一時間間隔をおいて、第一信号と第二信号を同時に発信し、第一信号の信号強度は第二信号の信号強度よりも大きく、第一信号発射の信号強度は０〜５ｄＢｍのレンジ内、第二信号発射の信号強度は−１５〜−４ｄＢｍのレンジ内とする、
無線信号レシーバーは、無線信号トランスミッターから発信された第一信号を受信したとき、無線信号トランスミッターが無線信号レシーバーの第一範囲内に入ったと判断する、
無線信号レシーバーが、無線信号トランスミッターから発信された第一信号と第二信号を受信し、且つ、第二信号の信号強度が接近閾値を上回っていた場合、無線信号レシーバーは一回のフィードバック信号を無線信号トランスミッターに発信する、
無線信号トランスミッターは、このフィードバック信号を受信した後、第二時間間隔をおいて頻度を変えて第二信号を発信する、次いで、
無線信号レシーバーは、無線信号トランスミッターから発信された第一信号と第二信号を受信し、且つ、第二信号の信号強度がアラーム閾値を上回っていた場合、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断する、
という手順で行われることを特徴とする、無線装置接近検知方法を提供する。 The present invention
The wireless signal transmitter simultaneously transmits the first signal and the second signal at a first time interval, the signal strength of the first signal is greater than the signal strength of the second signal, and the signal strength of the first signal emission is 0 Within the range of -5 dBm, the signal intensity of the second signal emission is within the range of -15 to -4 dBm,
When the wireless signal receiver receives the first signal transmitted from the wireless signal transmitter, the wireless signal transmitter determines that the wireless signal transmitter is within the first range of the wireless signal receiver.
When the wireless signal receiver receives the first signal and the second signal transmitted from the wireless signal transmitter and the signal strength of the second signal exceeds the approach threshold, the wireless signal receiver receives one feedback signal. Send to the wireless signal transmitter,
After receiving the feedback signal, the wireless signal transmitter changes the frequency at a second time interval and then transmits the second signal.
The wireless signal receiver receives the first signal and the second signal transmitted from the wireless signal transmitter, and if the signal strength of the second signal exceeds the alarm threshold value, the wireless signal transmitter transmits the second signal of the wireless signal receiver. Judge that it is within range,
A wireless device approach detection method is provided, which is performed by the following procedure.

そのうち、無線信号トランスミッターはさらに第三信号を発信するが、この第三信号は第二信号、第一信号と同時に発信される、或いは、第三信号は第二信号との輪番で、第一信号とともに発信され、無線信号トランスミッターは前記フィードバック信号を受信した後、第二時間間隔をおいて、第二信号と第三信号を同時に、または輪番で発信し、次いで、第三信号の信号強度がアシスト閾値を上回っていた場合、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断する。 Among them, the wireless signal transmitter further transmits a third signal, but this third signal is transmitted simultaneously with the second signal and the first signal, or the third signal is a rotation with the second signal, and the first signal The radio signal transmitter transmits the second signal and the third signal at the same time or in a rotation number after receiving the feedback signal, and then the signal strength of the third signal is assisted. If the threshold is exceeded, it is determined that the wireless signal transmitter is within the second range of the wireless signal receiver.

設定された時間内において無線信号レシーバーが第二信号または第三信号を受信できなかったときは、無線信号トランスミッターが第二範囲外にあると判断し、その設定時間は５秒とする。   If the wireless signal receiver fails to receive the second signal or the third signal within the set time, it is determined that the wireless signal transmitter is out of the second range, and the set time is 5 seconds.

第三信号発射の信号強度は、第二信号発射の信号強度±３ｄＢｍ、且つ、−１５〜−４ｄＢｍのレンジ内とする。   The signal intensity of the third signal emission is within the range of the signal intensity ± 3 dBm of the second signal emission and -15 to -4 dBm.

第三信号発射の信号強度は、第二信号発射の信号強度±３ｄＢｍ、且つ、−１５〜−４ｄＢｍのレンジ内とする。アシスト閾値の受信信号強度は−８５〜−９２ｄＢｍのレンジ内とする。   The signal intensity of the third signal emission is within the range of the signal intensity ± 3 dBm of the second signal emission and -15 to -4 dBm. The received signal strength of the assist threshold is in the range of −85 to −92 dBm.

従来の技術における距離と信号強度の関係。The relationship between distance and signal strength in the prior art. 従来の技術における距離と信号強度の比例関係。The proportional relationship between distance and signal strength in the prior art. 参考例における無線装置接近検知方法の流れ図。The flowchart of the radio | wireless apparatus approach detection method in a reference example . 参考例における無線装置接近検知方法を示す図。 The figure which shows the radio | wireless apparatus approach detection method in a reference example . 別の参考例を示す無線装置接近検知方法の流れ図。The flowchart of the radio | wireless apparatus approach detection method which shows another reference example . 別の参考例の無線装置接近検知方法を示す図。 The figure which shows the radio | wireless apparatus approach detection method of another reference example . 本発明における無線装置接近検知方法の流れ図。A flow diagram of the non-linear device approach detecting how put the present invention. 本発明における無線装置接近検知方法を示す図。It shows a non-linear device approach detecting how put the present invention.

図３に示すように、参考例における無線装置接近検知方法の流れ図は以下の手順を踏んで行われる。
Ｓ１０１：無線信号トランスミッターが第一時間間隔をおいて、第一信号、第二信号及び第三信号を同時に発信する、
Ｓ１０２：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号を受信すると、無線信号トランスミッターが無線信号レシーバーの第一範囲内に入ったと判断する、
Ｓ１０３：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号、及び第二信号または第三信号のいずれかを受信すると、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断する、及び、
Ｓ１０４：設定された時間内において無線信号レシーバーが第二信号または第三信号のいずれかを受信できなかったとき、無線信号トランスミッターが第二範囲外にあると判定する。 As shown in FIG. 3, the flowchart of the wireless device approach detection method in the reference example is performed according to the following procedure.
S101: The wireless signal transmitter simultaneously transmits the first signal, the second signal, and the third signal at a first time interval.
S102: Upon receiving the first signal transmitted from the wireless signal transmitter, the wireless signal receiver determines that the wireless signal transmitter is within the first range of the wireless signal receiver.
S103: When the wireless signal receiver receives the first signal transmitted from the wireless signal transmitter and either the second signal or the third signal, the wireless signal transmitter determines that the wireless signal transmitter is within the second range of the wireless signal receiver. ,as well as,
S104: When the wireless signal receiver fails to receive either the second signal or the third signal within the set time, it is determined that the wireless signal transmitter is out of the second range.

参考例における無線装置接近検知方法を示す図である図４に示すように、無線信号トランスミッター１００と無線信号レシーバー２００の間には一定の距離があり、無線信号トランスミッター１００は一定の頻度で、第一信号、第二信号及び第三信号を同時に発信する。この第三信号は第二信号、第一信号と同時に発信される、或いは、この第三信号は第二信号との輪番で、第一信号とともに発信される。第一信号発射の信号強度は４ｄＢｍ、第二信号発射の信号強度は−８ｄＢｍ、第三信号発射の信号強度は−５ｄＢｍとする。無線信号レシーバー２００から半径１０メートルの範囲内を第一範囲３００、無線信号レシーバー２００から半径３メートルの範囲内を第二範囲４００とする。無線信号トランスミッター１００が無線信号レシーバー２００に向けて接近し、無線信号レシーバー２００が無線信号トランスミッター１００から発信された信号強度の強い第一信号を受信したとき、無線信号レシーバー２００は無線信号トランスミッター１００が第一範囲３００に入ったと判断する。無線信号レシーバー２００が、無線信号トランスミッター１００から発信された第一信号、及び第二信号または第三信号のいずれかを受信したとき、無線信号レシーバー２００は無線信号トランスミッター１００が第二範囲４００に入ったと判断する。 As shown in FIG. 4, which is a diagram illustrating a wireless device approach detection method in the reference example, there is a certain distance between the wireless signal transmitter 100 and the wireless signal receiver 200, and the wireless signal transmitter 100 has a certain frequency and a first frequency. One signal, second signal and third signal are transmitted simultaneously. The third signal is transmitted at the same time as the second signal and the first signal, or the third signal is transmitted together with the first signal in rotation with the second signal. The signal intensity of the first signal emission is 4 dBm, the signal intensity of the second signal emission is -8 dBm, and the signal intensity of the third signal emission is -5 dBm. A range within a radius of 10 meters from the radio signal receiver 200 is defined as a first range 300, and a range within a radius of 3 meters from the radio signal receiver 200 is defined as a second range 400. When the wireless signal transmitter 100 approaches the wireless signal receiver 200 and the wireless signal receiver 200 receives the first signal having a high signal intensity transmitted from the wireless signal transmitter 100, the wireless signal receiver 200 is connected to the wireless signal transmitter 100 by the wireless signal transmitter 100. It is determined that the first range 300 has been entered. When the wireless signal receiver 200 receives the first signal transmitted from the wireless signal transmitter 100 and either the second signal or the third signal, the wireless signal receiver 200 enters the second range 400. Judge that

第二信号を確実に受信して、無線信号トランスミッター１００が第二範囲４００内に入ったことを確認するため、別の参考例の無線装置接近検知方法は、無線信号レシーバー２００に受信時のアラーム閾値を設けて、無線信号トランスミッター１００の位置を判断する。図５に示すように、別の参考例を示す無線装置接近検知方法の流れ図は、以下の手順を踏んで行われる。
Ｓ２０１：無線信号トランスミッターが第一時間間隔をおいて、第一信号、第二信号及び第三信号を同時に発信する、
Ｓ２０２：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号を受信すると、無線信号トランスミッターが無線信号レシーバーの第一範囲内に入ったと判断する、
Ｓ２０３：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号、及び第二信号または第三信号のいずれかを受信し、且つ、第二信号の信号強度がアラーム閾値を上回っているとき、或いは、第三信号の信号強度がアシスト閾値を上回っているとき、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断する、及び、
Ｓ２０４：設定された時間内において無線信号レシーバーが第二信号または第三信号のいずれかを受信できなかったとき、無線信号トランスミッターが第二範囲外にあると判定する。 In order to reliably receive the second signal and confirm that the wireless signal transmitter 100 is within the second range 400, another wireless device approach detection method according to a reference example is provided in the wireless signal receiver 200 with an alarm at the time of reception. A threshold is provided to determine the position of the wireless signal transmitter 100. As shown in FIG. 5, the flowchart of the wireless device approach detection method according to another reference example is performed according to the following procedure.
S201: The wireless signal transmitter simultaneously transmits the first signal, the second signal, and the third signal at a first time interval.
S202: When receiving the first signal transmitted from the wireless signal transmitter, the wireless signal receiver determines that the wireless signal transmitter is within the first range of the wireless signal receiver.
S203: The wireless signal receiver receives the first signal transmitted from the wireless signal transmitter and either the second signal or the third signal, and when the signal strength of the second signal exceeds the alarm threshold value, Alternatively, when the signal strength of the third signal is above the assist threshold, it is determined that the wireless signal transmitter is within the second range of the wireless signal receiver, and
S204: When the wireless signal receiver fails to receive either the second signal or the third signal within the set time, it is determined that the wireless signal transmitter is out of the second range.

別の参考例の無線装置接近検知方法を示す図である図６に示すように、無線信号トランスミッター１００と無線信号レシーバー２００の間には一定の距離があり、無線信号トランスミッター１００は一定の頻度で、第一信号、第二信号及び第三信号を同時に発信する。この第三信号は第二信号、第一信号と同時に発信される、或いは、この第三信号は第二信号との輪番で、第一信号とともに発信される。第一信号発射の信号強度は４ｄＢｍ、第二信号発射の信号強度は−８ｄＢｍ、第三信号発射の信号強度は−５ｄＢｍとする。無線信号レシーバー２００から半径１０メートルの範囲内を第一範囲３００、無線信号レシーバー２００から半径３メートルの範囲内を第二範囲４００とする。アラーム閾値の受信信号強度は−８９ｄＢｍ、アシスト閾値の受信信号強度は−８６ｄＢｍとする。無線信号トランスミッター１００が無線信号レシーバー２００に向けて接近し、無線信号レシーバー２００が無線信号トランスミッター１００から発信された信号強度の強い第一信号を受信したとき、無線信号レシーバー２００は無線信号トランスミッター１００が第一範囲３００に入ったと判断する。無線信号レシーバー２００が、無線信号トランスミッター１００から発信された第一信号、及び第二信号または第三信号のいずれかを受信したとき、且つ、第二信号の信号強度がアラーム閾値を上回っているとき、或いは、第三信号の信号強度がアシスト閾値を上回っているとき、無線信号レシーバー２００は無線信号トランスミッター１００が第二範囲４００に入ったと判断する。 As shown in FIG. 6, which shows a wireless device approach detection method according to another reference example, there is a certain distance between the wireless signal transmitter 100 and the wireless signal receiver 200, and the wireless signal transmitter 100 has a constant frequency. The first signal, the second signal and the third signal are transmitted simultaneously. The third signal is transmitted at the same time as the second signal and the first signal, or the third signal is transmitted together with the first signal in rotation with the second signal. The signal intensity of the first signal emission is 4 dBm, the signal intensity of the second signal emission is -8 dBm, and the signal intensity of the third signal emission is -5 dBm. A range within a radius of 10 meters from the radio signal receiver 200 is defined as a first range 300, and a range within a radius of 3 meters from the radio signal receiver 200 is defined as a second range 400. The alarm threshold received signal strength is -89 dBm, and the assist threshold received signal strength is -86 dBm. When the wireless signal transmitter 100 approaches the wireless signal receiver 200 and the wireless signal receiver 200 receives the first signal having a high signal intensity transmitted from the wireless signal transmitter 100, the wireless signal receiver 200 is connected to the wireless signal transmitter 100 by the wireless signal transmitter 100. It is determined that the first range 300 has been entered. When the wireless signal receiver 200 receives the first signal transmitted from the wireless signal transmitter 100 and either the second signal or the third signal, and the signal strength of the second signal exceeds the alarm threshold value. Alternatively, when the signal strength of the third signal exceeds the assist threshold, the wireless signal receiver 200 determines that the wireless signal transmitter 100 has entered the second range 400.

第二信号を確実に受信して、無線信号トランスミッター１００が第二範囲４００内に入ったことを確認するため、本発明は無線装置接近検知方法を提供し、無線信号トランスミッター１００が信号を発信する際の頻度を変えて、無線信号レシーバー２００が無線信号トランスミッター１００の位置を容易に判断できるようにする。図７に示すように、本発明における無線装置接近検知方法の流れ図は、以下の手順を踏んで行われる。
Ｓ３０１：無線信号トランスミッターが第一時間間隔をおいて、第一信号、第二信号及び第三信号を同時に発信する、
Ｓ３０２：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号を受信すると、無線信号トランスミッターが無線信号レシーバーの第一範囲内に入ったと判断する、
Ｓ３０３：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号と第二信号または第三信号のいずれかを受信し、且つ、第二信号の信号強度が接近閾値を上回っているとき、或いは、第三信号の信号強度がアシスト閾値を上回っているとき、無線信号レシーバーは無線信号トランスミッターに対して一回のフィードバック信号を発信する、
Ｓ３０４：フィードバック信号を受信した無線信号トランスミッターは、第二時間間隔をおいて、第二信号及び第三信号を発信する、
Ｓ３０５：無線信号レシーバーは、無線信号トランスミッターから発信された第一信号、及び第二信号または第三信号のいずれかを受信し、且つ、第二信号の信号強度がアラーム閾値を上回っているとき、或いは、第三信号の信号強度がアシスト閾値を上回っているとき、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断する、及び、
Ｓ３０６：設定された時間内において無線信号レシーバーが第二信号または第三信号のいずれかを受信できなかったとき、無線信号トランスミッターが第二範囲外にあると判定する。 And reliably receive the second signal, to verify that the wireless signal transmitter 100 is within the second range 400, the present invention provides a free-ray device proximity sensing method, a radio signal transmitter 100 transmits a signal The radio signal receiver 200 can easily determine the position of the radio signal transmitter 100 by changing the frequency at which the radio signal is transmitted. As shown in FIG. 7, a flow diagram of the non-linear device approach detecting how put to the invention is carried out by stepping the following steps.
S301: The wireless signal transmitter simultaneously transmits the first signal, the second signal, and the third signal at a first time interval.
S302: Upon receiving the first signal transmitted from the wireless signal transmitter, the wireless signal receiver determines that the wireless signal transmitter is within the first range of the wireless signal receiver.
S303: The wireless signal receiver receives either the first signal and the second signal or the third signal transmitted from the wireless signal transmitter, and the signal strength of the second signal exceeds the approach threshold, or When the signal strength of the third signal is above the assist threshold, the wireless signal receiver sends a feedback signal to the wireless signal transmitter.
S304: The wireless signal transmitter that has received the feedback signal transmits the second signal and the third signal at a second time interval.
S305: The wireless signal receiver receives the first signal transmitted from the wireless signal transmitter, and either the second signal or the third signal, and when the signal strength of the second signal exceeds the alarm threshold value, Alternatively, when the signal strength of the third signal is above the assist threshold, it is determined that the wireless signal transmitter is within the second range of the wireless signal receiver, and
S306: When the wireless signal receiver fails to receive either the second signal or the third signal within the set time, it is determined that the wireless signal transmitter is out of the second range.

本発明における無線装置接近検知方法を示す図である図８に示すように、無線信号トランスミッター１００と無線信号レシーバー２００の間には一定の距離があり、無線信号トランスミッター１００は第一時間間隔の頻度（毎秒１回）で、第一信号、第二信号及び第三信号を同時に発信する。この第三信号は第二信号、第一信号と同時に発信される、或いは、この第三信号は第二信号との輪番で、第一信号とともに発信される。第一信号発射の信号強度４ｄＢｍ、第二信号発射の信号強度は−８ｄＢｍ、第三信号発射の信号強度は−５ｄＢｍとする。無線信号レシーバー２００から半径１０メートルの範囲内を第一範囲３００、無線信号レシーバー２００から半径３メートルの範囲内を第二範囲４００とする。アラーム閾値の受信信号強度は−８９ｄＢｍ、アシスト閾値の受信信号強度は−８６ｄＢｍ、接近閾値の受信信号強度は−９２ｄＢｍとする。無線信号トランスミッター１００が無線信号レシーバー２００に向けて接近し、無線信号レシーバー２００が無線信号トランスミッター１００から発信された信号強度の強い第一信号を受信したとき、無線信号レシーバー２００は無線信号トランスミッター１００が第一範囲３００に入ったと判断する。無線信号レシーバー２００が、無線信号トランスミッター１００から発信された第一信号と第二信号を受信し、且つ、第二信号の信号強度が接近閾値を上回っているとき、すなわち、無線信号トランスミッター１００と無線信号レシーバー２００との距離が６メートルのとき、無線信号レシーバー２００は無線信号トランスミッター１００に対して一回のフィードバック信号を発信し、このフィードバック信号を受信した無線信号トランスミッター１００は、第二時間間隔の頻度（毎秒１０回）で、第二信号及び第三信号を発信する。無線信号レシーバー２００は、無線信号トランスミッター１００から発信された第一信号、及び第二信号または第三信号のいずれかを受信し、且つ、第二信号の信号強度がアラーム閾値の信号強度を上回っているとき、或いは、第三信号の信号強度がアシスト閾値の信号強度を上回っているとき、無線信号レシーバー２００は無線信号トランスミッター１００が第二範囲４００内に入ったと判断する。 As shown in FIG. 8 is a diagram showing a non-linear device approach detecting how put the present invention, between the radio signal transmitter 100 and the radio signal receiver 200 have a certain distance, the wireless signal transmitter 100 is first hour The first signal, the second signal, and the third signal are simultaneously transmitted at an interval frequency (once per second). The third signal is transmitted at the same time as the second signal and the first signal, or the third signal is transmitted together with the first signal in rotation with the second signal. The signal intensity of the first signal emission is 4 dBm, the signal intensity of the second signal emission is -8 dBm, and the signal intensity of the third signal emission is -5 dBm. A range within a radius of 10 meters from the radio signal receiver 200 is defined as a first range 300, and a range within a radius of 3 meters from the radio signal receiver 200 is defined as a second range 400. The alarm threshold received signal strength is -89 dBm, the assist threshold received signal strength is -86 dBm, and the approach threshold received signal strength is -92 dBm. When the wireless signal transmitter 100 approaches the wireless signal receiver 200 and the wireless signal receiver 200 receives the first signal having a high signal intensity transmitted from the wireless signal transmitter 100, the wireless signal receiver 200 is connected to the wireless signal transmitter 100 by the wireless signal transmitter 100. It is determined that the first range 300 has been entered. When the radio signal receiver 200 receives the first signal and the second signal transmitted from the radio signal transmitter 100 and the signal strength of the second signal exceeds the approach threshold, that is, the radio signal transmitter 100 and the radio signal When the distance to the signal receiver 200 is 6 meters, the wireless signal receiver 200 transmits a feedback signal once to the wireless signal transmitter 100, and the wireless signal transmitter 100 that has received the feedback signal has a second time interval. The second signal and the third signal are transmitted at a frequency (10 times per second). The wireless signal receiver 200 receives the first signal transmitted from the wireless signal transmitter 100 and either the second signal or the third signal, and the signal strength of the second signal exceeds the signal strength of the alarm threshold. Or when the signal strength of the third signal is higher than the assist threshold signal strength, the wireless signal receiver 200 determines that the wireless signal transmitter 100 is within the second range 400.

Claims (3)

無線信号トランスミッターが第一時間間隔をおいて、第一信号と第二信号を同時に発信し、第一信号の信号強度は第二信号の信号強度よりも大きくする、
無線信号レシーバーは、無線信号トランスミッターから発信された第一信号を受信したとき、無線信号トランスミッターが無線信号レシーバーの第一範囲内に入ったと判断する、及び、
無線信号レシーバーが、無線信号トランスミッターから発信された第一信号と第二信号を受信し、且つ、第二信号の信号強度が接近閾値を上回っていた場合、無線信号レシーバーは一回のフィードバック信号を無線信号トランスミッターに発信する、
前記フィードバック信号を受信した無線信号トランスミッターは、第二時間間隔をおいて頻度を変えて第二信号を発信する、次いで、
無線信号レシーバーは、無線信号トランスミッターが発信した第一信号と第二信号を受信し、且つ、第二信号の信号強度がアラーム閾値を上回っていた場合、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断する、
の手順で行われることを特徴とする無線装置接近検知方法。 The wireless signal transmitter transmits the first signal and the second signal at the same time interval, and the signal strength of the first signal is larger than the signal strength of the second signal.
When the wireless signal receiver receives the first signal transmitted from the wireless signal transmitter, the wireless signal receiver determines that the wireless signal transmitter is within the first range of the wireless signal receiver; and
When the wireless signal receiver receives the first signal and the second signal transmitted from the wireless signal transmitter and the signal strength of the second signal exceeds the approach threshold, the wireless signal receiver receives one feedback signal. Send to the wireless signal transmitter,
The wireless signal transmitter that has received the feedback signal transmits a second signal at a second time interval and changes the frequency.
The wireless signal receiver receives the first signal and the second signal transmitted by the wireless signal transmitter, and if the signal strength of the second signal exceeds the alarm threshold, the wireless signal transmitter is in the second range of the wireless signal receiver. Judging that it was inside,
A wireless device approach detection method, which is performed according to the following procedure. 無線信号トランスミッターはさらに第三信号を発信するが、この第三信号は、第二信号、第一信号と同時に発信される、或いは、第三信号は第二信号との輪番で、第一信号とともに発信され、無線信号トランスミッターは前記フィードバック信号を受信した後、第二時間間隔をおいて、第二信号と第三信号を同時に、または輪番で発信し、次いで、第三信号の信号強度がアシスト閾値を上回っていた場合、無線信号トランスミッターが無線信号レシーバーの第二範囲内に入ったと判断することを特徴とする、請求項１に記載の無線装置接近検知方法。 The wireless signal transmitter further emits a third signal, which is transmitted simultaneously with the second signal and the first signal, or the third signal is a rotation with the second signal, together with the first signal. The radio signal transmitter transmits the second signal and the third signal at the second time interval at the same time or in a rotation number after receiving the feedback signal, and then the signal strength of the third signal is the assist threshold value. The wireless device approach detection method according to claim 1 , wherein the wireless signal transmitter determines that the wireless signal transmitter is within a second range of the wireless signal receiver when the wireless device transmitter exceeds the wireless signal receiver. 第一信号発射の信号強度は０〜５ｄＢｍのレンジ内、第二信号発射の信号強度は−１５〜−４ｄＢｍのレンジ内、第三信号の信号強度は、第二信号発射の信号強度±３ｄＢｍ、且つ、−１５〜−４ｄＢｍのレンジ内とし、このアラーム閾値の受信信号強度は−８５〜−９２ｄＢｍのレンジ内とし、アシスト閾値の受信信号強度は−８５〜−９２ｄＢｍのレンジ内とすることを特徴とする、請求項２に記載の無線装置接近検知方法。 The signal intensity of the first signal emission is in the range of 0 to 5 dBm, the signal intensity of the second signal emission is in the range of -15 to -4 dBm, the signal intensity of the third signal is the signal intensity of the second signal emission ± 3 dBm, In addition, the received signal strength of the alarm threshold is in the range of −85 to −92 dBm, and the received signal strength of the assist threshold is in the range of −85 to −92 dBm. The wireless device approach detection method according to claim 2, wherein the wireless device approach detection method is characterized in that:
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