JP2019109652A - Parking lot management system - Google Patents

Parking lot management system Download PDF

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JP2019109652A
JP2019109652A JP2017241490A JP2017241490A JP2019109652A JP 2019109652 A JP2019109652 A JP 2019109652A JP 2017241490 A JP2017241490 A JP 2017241490A JP 2017241490 A JP2017241490 A JP 2017241490A JP 2019109652 A JP2019109652 A JP 2019109652A
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vehicle
parking lot
antenna unit
management system
signal
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JP6588525B2 (en
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勝 寺田
Masaru Terada
勝 寺田
久 西川
Hisashi Nishikawa
久 西川
洋史 三井
Yoji Mitsui
洋史 三井
健之 荻田
Takeyuki Ogita
健之 荻田
直行 暮町
Naoyuki Kuremachi
直行 暮町
俊哉 磯部
Toshiya Isobe
俊哉 磯部
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NIPPON GIT KK
Parking Management Organization Ltd
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NIPPON GIT KK
Parking Management Organization Ltd
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Abstract

To provide a parking lot management system that can detect whether or not an organism such as a person or a pet remains in the inside of a parked vehicle.SOLUTION: A parking lot management system, in which a plurality of antennas 1, 1 are arranged in the vicinity of a vehicle parking scheduled zone Z, includes: one antenna 1 that serves as a transmission unit X that transmits an impulse UWB signal S toward the inside of a parked vehicle C; and the other antenna 1 that serves as a receiving unit Y that receives an in-vehicle reflection signal Ra reflected in the inside of the parked vehicle C and passed through the inside thereof. The system further includes an information processor 8 that reads a change in the in-vehicle reflection signal Ra received by the receiving unit Y to detect whether or not an organism remains in the inside of the parked vehicle C.SELECTED DRAWING: Figure 1

Description

本発明は、駐車場管理システムに関する。   The present invention relates to a parking lot management system.

従来、駐車場管理システムとして、機械式立体駐車場の車庫部内に、運転手が閉じ込められるのを防止するために、車庫の扉を閉じる前に、運転手のユーザーID認証を行うことで、車庫部内の無人確認を行うものが公知である(例えば、特許文献1参照)。   Conventionally, as a parking lot management system, in order to prevent a driver from being trapped in a garage of a mechanical three-dimensional parking garage, the driver's user ID authentication is performed before the door of the garage is closed. It is known to perform unmanned confirmation in the department (see, for example, Patent Document 1).

特開2012−26121号公報Unexamined-Japanese-Patent No. 2012-26121

しかし、従来の駐車場管理システムは、運転手が、赤ちゃん等の人やペットが乗っていたのを忘れたまま、車両を離れてしまい、駐車車両の内部に人やペット等の生物が取り残される(置き去りにされる)といった問題があった。   However, in the conventional parking lot management system, the driver leaves the vehicle with forgetting that a person such as a baby or a pet is riding, and a living thing such as a person or a pet is left behind inside the parked vehicle There was a problem of being left behind.

そこで、本発明は、駐車車両の内部に人やペット等の生物が残留しているか否かを検出可能な駐車場管理システムの提供を目的とする。   Then, this invention aims at provision of the parking lot management system which can detect whether biological organisms, such as a person and a pet, remain inside a parking vehicle.

本発明の駐車場管理システムは、車両駐車予定ゾーンの近傍に複数のアンテナ部を配設した駐車場管理システムであって、駐車車両の内部に向けてインパルスUWB信号を発信する発信部となる一方の上記アンテナ部と、上記駐車車両の内部を反射して通過した車内反射信号を受信する受信部となる他方の上記アンテナ部と、を備え、さらに、上記受信部が受信した上記車内反射信号の変化を読み取って上記駐車車両の内部に生物が残留しているか否かを検出する情報処理器を備えているものである。
また、一方の上記アンテナ部及び上記他方のアンテナ部は、上記インパルスUWB信号を発信する上記発信部と、上記車内反射信号を受信する上記受信部と、に交互に切り替わるものである。
また、上記情報処理器は、上記駐車車両の外面によって反射した車外反射信号の変化を、上記車内反射信号の変化からキャンセルする車体揺れ分離処理を行うものである。
また、上記駐車車両の内部の静止した生物を動作させるための挙動誘発手段を備えているものである。
また、上記アンテナ部は、機械式立体駐車場のゴンドラに設けられ、上記アンテナ部を上下位置調整自在、又は、上下所定間隔をもって配設した複数の上記アンテナ部を選択的に切り換え可能としたものである。
The parking lot management system according to the present invention is a parking lot management system in which a plurality of antenna units are disposed in the vicinity of a planned vehicle parking zone, and serves as a transmitter that transmits an impulse UWB signal toward the inside of a parked vehicle. The antenna unit and the other antenna unit serving as a receiving unit for receiving an in-vehicle reflection signal reflected by passing through the inside of the parked vehicle, and the in-vehicle reflection signal received by the receiving unit An information processor is provided which reads a change and detects whether or not a living thing remains in the interior of the parked vehicle.
Further, one of the antenna unit and the other antenna unit is alternately switched to the transmitting unit that transmits the impulse UWB signal and the receiving unit that receives the in-vehicle reflection signal.
Further, the information processor performs vehicle body swing separation processing for canceling the change of the external reflection signal reflected by the outer surface of the parked vehicle from the change of the internal reflection signal.
The vehicle further comprises behavior inducing means for operating a stationary organism inside the parked vehicle.
Further, the antenna unit is provided in a gondola of a mechanical three-dimensional parking lot, and the antenna unit is adjustable in vertical position, or a plurality of the antenna units arranged at predetermined vertical intervals can be selectively switched. It is.

本発明によれば、駐車車両の内部に、生物が残留しているか否かを、確実かつ迅速に検出できる。つまり、赤ちゃん等の人やペット等の生物の置き去り(閉じ込め)を防止できる。駐車車両の内部を管理人や警備員が目視する必要がなく、プライバシーの保護を実現できる。車両に人検知センサーを設ける必要や、駐車場利用者の事前登録等が不要で、システム導入が容易であると共に、様々な人(車両)が利用する駐車場に最適である。   According to the present invention, whether or not a living thing remains in the interior of a parked vehicle can be detected reliably and quickly. That is, it is possible to prevent leaving (confining) of a person such as a baby or a living thing such as a pet. There is no need for a manager or a guard to look inside the parking vehicle, and privacy can be protected. It is not necessary to provide a human detection sensor in the vehicle, it is not necessary to pre-register the parking lot user, etc., it is easy to introduce the system, and it is optimal for the parking lot used by various people (vehicles).

本発明の駐車場管理システムの実施の一形態を示す構成図である。It is a block diagram which shows one Embodiment of the parking lot management system of this invention. アンテナ部の切り替わりを説明するための構成図である。It is a block diagram for demonstrating the switching of an antenna part. 車外反射信号を説明するための構成図である。It is a block diagram for demonstrating a vehicle exterior reflection signal. 正面図である。It is a front view. アンテナ部の配設位置の一例を示す正面図である。It is a front view which shows an example of the arrangement | positioning position of an antenna part. 生物検出処理の一例を説明するためのグラフ図であって、(a)は伝搬距離と信号強度の関係を示すグラフ図であり、(b)は時間と信号強度の関係を示すグラフ図である。It is a graph for demonstrating an example of a biological detection process, Comprising: (a) is a graph which shows the relationship of a propagation distance and signal strength, (b) is a graph which shows the relationship of time and signal strength. . 車体揺れ分離処理の一例を説明するためのグラフ図であって、(a)は伝搬距離と信号強度の関係を示すグラフ図であり、(b)は時間と信号強度の関係を示すグラフ図であり、(c)はFFT解析したグラフ図である。It is a graph for demonstrating an example of a vehicle body shaking isolation | separation process, Comprising: (a) is a graph which shows the relationship between a propagation distance and signal strength, (b) is a graph which shows the relationship between time and signal strength. (C) is a graph of FFT analysis. FFT解析したグラフ図である。It is a graph which analyzed FFT.

以下、図示の実施形態に基づき本発明を詳説する。
本発明に係る駐車場管理システムは、図1に示すように、車両駐車予定ゾーンZの近傍に配設される複数のアンテナ部1,1と、アンテナ部1に同軸ケーブル等の電線を介して接続されインパルスUWB信号Sの発信処理等を行う情報処理器8と、を備えている。
Hereinafter, the present invention will be described in detail based on the illustrated embodiments.
In the parking lot management system according to the present invention, as shown in FIG. 1, a plurality of antenna units 1 and 1 disposed in the vicinity of the vehicle parking scheduled zone Z, and the antenna unit 1 via electric wires such as coaxial cables. And an information processor 8 connected to perform transmission processing and the like of the impulse UWB signal S.

アンテナ部1は、インパルスUWB(Ultra Wide Band)信号Sを発信可能、かつ、インパルスUWBが物体に反射した反射信号(反射波)を受信可能なものである。
インパルスUWB信号は、例えば、ビットレートが50MHz(パルスの最少間隔が20nsのインパルス列)のUWBインパルス列である。使用周波数は、例えば、7.25〜10.25GHzである。
The antenna unit 1 can transmit an impulse UWB (Ultra Wide Band) signal S and can receive a reflected signal (reflected wave) reflected by the impulse UWB on an object.
The impulse UWB signal is, for example, a UWB impulse train with a bit rate of 50 MHz (impulse train with a pulse minimum interval of 20 ns). The used frequency is, for example, 7.25 to 10.25 GHz.

複数のアンテナ部1,1は、車両駐車予定ゾーンZに駐車している駐車車両Cの内部に向けてインパルスUWB信号S(以下、UWB信号Sと呼ぶ場合もある)を発信する発信部Xとなる一方のアンテナ部1と、駐車車両Cの内部を反射して通過した(車外に出てきた)インパルスUWBの車内反射信号Raを受信する受信部Yとなる他方のアンテナ部1と、を備えている。
なお、図1乃至図3において、駐車車両Cの内部(以下、車内と呼ぶ場合もある)での信号伝搬経路を破線にて簡略化して図示している。
A plurality of antenna units 1, 1 and a transmitting unit X for transmitting an impulse UWB signal S (hereinafter sometimes referred to as a UWB signal S) toward the interior of a parked vehicle C parked in a planned vehicle parking zone Z One antenna unit 1 and the other antenna unit 1 serving as a receiving unit Y for receiving the in-vehicle reflection signal Ra of impulse UWB reflected (passed out of the vehicle) reflected and passed inside the parked vehicle C ing.
Note that, in FIGS. 1 to 3, a signal propagation path inside the parked vehicle C (hereinafter sometimes referred to as the inside of the vehicle) is simplified and shown by a broken line.

情報処理器8は、各アンテナ部1に接続されるアンテナ接続部と、UWB信号送受信間の信号伝搬時間を計測して距離を算出可能(測距処理が可能)なCPUやMPUやマイコン等の演算処理部と、記憶部と、演算処理結果や判定処理結果等のデータや命令電気信号を外部機器に送信するための外部機器接続部と、を有している。   The information processing unit 8 measures the signal propagation time between the antenna connection unit connected to each antenna unit 1 and the UWB signal transmission / reception to calculate the distance (the distance measurement processing is possible), such as a CPU, MPU or microcomputer It has an arithmetic processing unit, a storage unit, and an external device connection unit for transmitting data such as a calculation processing result or a determination processing result and an instruction electric signal to an external device.

そして、情報処理器8は、受信部Yが受信した車内反射信号Raの変化を読み取って車内に、人やペット等の生物が残留しているか否かを検出する生物検出処理を行う。   Then, the information processor 8 reads a change in the in-vehicle reflection signal Ra received by the receiving unit Y, and performs a living body detection process to detect whether a living thing such as a person or a pet remains in the vehicle.

先ず、情報処理器8は、発信部X(発信側アンテナ部1)から受信部Y(受信側アンテナ部1)までのUWB信号Sが辿った信号伝搬距離において、車内に生物が存在すると推定される位置を決定(特定)する。   First, the information processor 8 estimates that a living thing is present in the vehicle at the signal propagation distance followed by the UWB signal S from the transmitting unit X (the transmitting antenna unit 1) to the receiving unit Y (the receiving antenna unit 1). Determine the location of

図6(a)に示すように、横軸を信号伝搬距離(電波伝搬距離)とし、縦軸を信号強度(電波強度)とするグラフ図を作成し、車内と想定される伝搬距離範囲である車内範囲Eaを決定する。
そして、車内範囲Eaにおいて、伝搬距離位置ごとに信号強度の変化分(絶対値)の総和を比較して、信号強度が最も大きく変化した伝搬距離位置を、車内に生物が存在すると推定される生物存在推定位置Pとして特定(抽出)する。つまり、伝搬距離毎の信号強度の変化を算出して生物存在推定位置Pを特定する。
As shown in FIG. 6A, the horizontal axis represents signal propagation distance (radio wave propagation distance), and the vertical axis represents signal intensity (radio wave intensity). Determine the in-vehicle range Ea.
Then, in the in-vehicle range Ea, the propagation distance position at which the signal intensity changes the most is compared with the sum of the change (absolute value) of the signal strength for each propagation distance position. Identify (extract) as the estimated presence position P. That is, the change in the signal strength for each propagation distance is calculated to specify the biological presence estimated position P.

次に、生物存在推定位置Pにおいて、時間毎の信号強度の変化を読み取る(検出する)。図6(b)に示すように、横軸を、時間とし、縦軸を、生物存在推定位置Pでの信号強度としてグラフ図を作成することで、生物存在推定位置(特定された伝搬距離位置)Pでの信号強度の変化を波形状のグラフ線P´として得る(算出する)。   Next, a change in signal intensity with time is read (detected) at the biological presence estimated position P. As shown in FIG. 6 (b), the horizontal axis is time, and the vertical axis is a signal strength at the biological presence estimated position P, so that a biological existence estimated position (specified propagation distance position is created. ) Obtain (calculate) a change in signal strength at P as a waveform line P ′ of waveform.

そして、図6(b)のグラフ図において、グラフ線P´の変化を読み取る。例えば、波形の振幅の大きさや、単位時間当たりの変化量等の特性をパラメータとし、予め設定している特性判定基準に適合すると、生物が存在すると判定する。つまり、車内に生物が残留していると検出したことになる。   Then, in the graph of FIG. 6B, the change of the graph line P 'is read. For example, when characteristics such as the amplitude of the waveform and the amount of change per unit time are used as parameters, it is determined that a living thing is present if the characteristic criteria set in advance are met. In other words, it is detected that a living thing remains in the car.

なお、図6(b)のグラフ図において、波形のグラフ線P´の振幅の大きさや、単位時間当たりの変化量等の特性が判断しにくい(変化が弱い)場合は、図6(b)のグラフ図(グラフ線P´)に対して、FFT解析(Fast Fourier transform)を行って、繰り返し周期の検出を行い、その検出結果が、予め設定しているFFT用特性判定基準に適合するか否か判別して、生物が存在するか否かを判定するも良い。   In the graph of FIG. 6 (b), in the case where it is difficult to judge characteristics such as the amplitude of the waveform graph line P 'and the amount of change per unit time (the change is weak), FIG. 6 (b) Perform FFT analysis (Fast Fourier transform) on the graph diagram (graph line P ') to detect the repetition cycle, and check if the detection result conforms to the preset FFT characteristic criteria Alternatively, it may be determined whether or not a living thing exists.

さらに、図1において車内反射信号Raを受信していた他方のアンテナ部1は、図2に示すように、UWB信号Sを発信する発信部Xとしても作動(機能)し、一方のアンテナ部1は、他方のアンテナ部1から発信されたUWB信号Sが車内で反射して通過したUWBの車内反射信号Raを受信する受信部Yとしても作動(機能)する。   Furthermore, the other antenna unit 1 that has received the in-vehicle reflection signal Ra in FIG. 1 also operates (functions) as a transmitter unit X that transmits the UWB signal S, as shown in FIG. The receiver also operates (functions) as a receiver Y that receives the in-vehicle reflection signal Ra of the UWB that the UWB signal S transmitted from the other antenna unit 1 reflects and passes inside the vehicle.

一方のアンテナ部1及び他方のアンテナ部1が、UWB信号Sを発信する発信部Xと、車内反射信号Raを受信する受信部Yと、に交互に切り替わる(一方のアンテナ部1を発信から受信に切り替えると共に、他方のアンテナ部1を受信から発信に切り替える)ことで、UWB信号Sが車内で反射する条件が変わる。つまり、アンテナ部1や駐車車両Cを動かさずに信号伝搬経路を変えることができる。
従って、一方のアンテナ部1からUWB信号Sを発信した場合に、車内においてUWB信号Sが届いていなかった不感地帯を、他方のアンテナ部1から発信したUWB信号Sが届くことで、感知地帯(検出範囲)とでき、生物の検出精度(信頼性)を向上できる。
One antenna unit 1 and the other antenna unit 1 are alternately switched to a transmitter unit X that transmits a UWB signal S and a receiver unit Y that receives an in-vehicle reflection signal Ra (one antenna unit 1 is received from transmission By switching to the other antenna unit 1 from reception to transmission), the conditions under which the UWB signal S is reflected in the vehicle change. That is, the signal propagation path can be changed without moving the antenna unit 1 or the parked vehicle C.
Therefore, when the UWB signal S is transmitted from one of the antenna units 1, the UWB signal S transmitted from the other antenna unit 1 can reach the dead zone where the UWB signal S has not reached in the car, and the sensing zone ( Detection range), and the detection accuracy (reliability) of the living being can be improved.

また、発信部(送信部)Xから遠くなるほど、信号の強度は低下する。しかし、受信部Yで感度を上げると、(飽和状態になりやすく)正確な動きの反応(生物の挙動反応)を検出できない虞れがある。言い換えると、発信部Xに近い箇所は、反射への影響が強く出るので検知しやすい。   Also, the further away from the transmitting unit (transmitting unit) X, the lower the signal strength. However, when the sensitivity is increased in the receiving unit Y, there is a possibility that it is not possible to detect an accurate movement response (behavior reaction of an organism) (which tends to be saturated). In other words, a portion close to the transmission part X is easy to detect because the influence on the reflection is strong.

そこで、図1と図2に示すように、一方のアンテナ部1を最前列席の横の窓(前横窓ガラス)Cfを介して、信号を送受可能に配設し、他方のアンテナ部1を最後列座席の横の窓(後横窓ガラス)Cgを介して、信号を送受可能に配設する。言い換えると、アンテナ部1,1同士を、車体前後方向に離間させて配設する。   Therefore, as shown in FIGS. 1 and 2, one antenna unit 1 is arranged to be able to transmit and receive signals via a window (front window glass) Cf at the front row and the other antenna unit 1 is arranged. Signals can be transmitted and received via a window (rear window glass) Cg next to the last row seat. In other words, the antenna portions 1 and 1 are disposed apart from each other in the vehicle longitudinal direction.

図1に示すように、一方のアンテナ部1から前横窓ガラスCfを介して、車内に侵入したUWB信号Sは、最後列座席近傍(他方のアンテナ部1近傍)での強度が弱くなり、最後列座席での検出精度が低くなる虞れがある。
そこで、一方のアンテナ部1でUWB信号Sを発信して他方のアンテナ部1で車内反射信号Raを受信して、生物検出処理を行った後に、アンテナ部1の送受を切り替えて(発受を入れ替えて)、図2に示すように、他方のアンテナ部1でUWB信号Sを発信して一方のアンテナ部1で車内反射信号Raを受信して、生物検出処理を行う。後横窓ガラスCgを介して車内に侵入したUWB信号Sは、強度が十分であり、最後列座席近傍(他方のアンテナ部1近傍)での強度が強くなる(検出精度が高くなる)。したがって、ワンボックスカーのように座席数の多い(前後に長い)大型車であっても、確実に生物を検出することが可能となる。
As shown in FIG. 1, the UWB signal S intruding into the car from one antenna unit 1 through the front horizontal window glass Cf becomes weak in the vicinity of the last row seat (near the other antenna unit 1), There is a possibility that the detection accuracy at the last row seat may be lowered.
Therefore, after the UWB signal S is transmitted by one antenna unit 1 and the in-vehicle reflection signal Ra is received by the other antenna unit 1 and the biological detection processing is performed, the transmission and reception of the antenna unit 1 are switched ( 2), as shown in FIG. 2, the other antenna unit 1 transmits a UWB signal S, and one antenna unit 1 receives an in-vehicle reflection signal Ra to perform a biological detection process. The UWB signal S that has entered the vehicle through the rear side window glass Cg has sufficient strength, and the strength in the vicinity of the last row seat (in the vicinity of the other antenna unit 1) is high (detection accuracy is high). Therefore, it is possible to reliably detect a living thing even in a large car with a large number of seats (long back and forth) like a one-box car.

ここで、図3に示すように、発信部Xから発信したUWB信号Sにおいて車内へ侵入せずに駐車車両Cの外面によって反射する車外反射信号Rbがある。
情報処理器8は、車外反射信号Rbの変化を、車内反射信号Raの変化からキャンセル(分離)する車体揺れ分離処理を行う。
Here, as shown in FIG. 3, in the UWB signal S transmitted from the transmission unit X, there is an external reflection signal Rb reflected by the outer surface of the parked vehicle C without entering the inside of the vehicle.
The information processor 8 performs a vehicle shake separation process that cancels (separates) a change in the external reflection signal Rb from a change in the internal reflection signal Ra.

駐車車両Cが揺れる(振動する)と、車内の生物の動きを検出するのが困難となり、生物が存在していても、未検出となる虞れがあるが、生物検知処理中に車体揺れ分離処理を行うことで、生物の動きを確実に検出できる。   If the parked vehicle C shakes (oscillates), it becomes difficult to detect the movement of a living thing in the car, and even if a living thing is present, there is a possibility that it will not be detected. By performing the treatment, the movement of the living being can be detected with certainty.

先ず、図7(a)に示すように、横軸を伝搬距離とし、縦軸を信号強度とするグラフ図を作成し、車内と想定される伝搬距離範囲である車内範囲Eaを決定すると共に、車外と想定される伝搬距離範囲である車外範囲Ebを決定する。   First, as shown in FIG. 7A, a graph is created with the horizontal axis as the propagation distance and the vertical axis as the signal intensity, and the in-vehicle range Ea which is the assumed propagation distance range is determined. The outside range Eb which is the propagation distance range assumed to be outside the vehicle is determined.

そして、車内範囲Eaにおいて、伝搬距離ごとに信号強度の変化分(絶対値)の総和を比較して、信号強度が最も大きく変化した伝搬距離位置を、車内に生物が存在すると推定される生物存在推定位置Pとして特定(抽出)する。
また、車外範囲Ebにおいて、伝搬距離ごとに信号強度の変化分(絶対値)の総和を比較して、信号強度が最も大きく変化した伝搬距離位置を、車体揺れ基準位置Qとして特定(抽出)する。
Then, in the in-vehicle range Ea, the propagation distance position at which the signal intensity changes the most is compared with the sum of the change (absolute value) of the signal strength for each propagation distance. Identify (extract) as the estimated position P.
In addition, in the range Eb outside the vehicle, the propagation distance position at which the signal intensity is most greatly changed is specified (extracted) as the vehicle movement reference position Q by comparing the sum of the change (absolute value) of the signal strength for each propagation distance. .

次に、生物存在推定位置P及び車体揺れ基準位置Qにおいて、時間毎の信号強度の変化を算出する。
図7(b)に示すように、横軸を時間とし、縦軸を(生物存在推定位置P及び車体揺れ基準位置Qでの)信号強度としてグラフ図を作成する。
なお、図7(b)において、上側のグラフ線Q´が車外揺れ基準位置Qでの変化を示し、下側のグラフ線P´が生物存在推定位置Pでの変化を示す。
Next, the change of the signal strength with time is calculated at the biological presence estimated position P and the vehicle body shaking reference position Q.
As shown in FIG. 7B, the horizontal axis is time, and the vertical axis is a signal strength (at the estimated presence position P and the vehicle movement reference position Q) to create a graph.
In FIG. 7B, the upper graph line Q 'indicates the change at the vehicle external movement reference position Q, and the lower graph line P' indicates the change at the living thing estimated position P.

そして、図7(b)のグラフ図の夫々のグラフ線Q´,P´について、FFT解析(Fast Fourier transform)を行って、差分を算出すると、図7(c)のようなグラフ図を得ることができる。
ここで、車体揺れ分離処理を行わない(下側のグラフ線P´についてのみFFT解析を行った)場合は、図8に示すようなグラフ図が得られる。
図7(c)と図8から明らかなように、車体揺れ分離処理を行って得た図7(c)のFFTグラフ図は、車体揺れ分離処理を行っていない図8のFFTグラフ図に比べて、特徴が大きく表れており(特性が分かりやすく)、生物が存在するか否かの判定が容易となる。
つまり、車体の揺れをキャンセルすることで、(車体揺れの悪影響を受けずに)車内の生物の動作を確実に検出でき、車内に生物が存在するか否かの判定(生物の検出)を高精度に行うことができる。
Then, FFT analysis (Fast Fourier transform) is performed on each of the graph lines Q ′ and P ′ in the graph of FIG. 7B, and the difference is calculated to obtain a graph as shown in FIG. 7C. be able to.
Here, when the vehicle body shake separation process is not performed (the FFT analysis is performed only for the lower graph line P ′), a graph diagram as shown in FIG. 8 is obtained.
As is clear from FIGS. 7 (c) and 8 the FFT graph of FIG. 7 (c) obtained by carrying out the vehicle body shaking separation process is compared to the FFT graph of FIG. 8 which has not been subjected to the vehicle body shaking separation process. Therefore, the features appear in a large size (the characteristics are easy to understand), and it is easy to determine whether or not an organism is present.
In other words, by canceling the sway of the vehicle body, it is possible to reliably detect the motion of the living thing in the vehicle (without being adversely affected by the vehicle swaying motion), and the determination of whether or not the living thing is present in the vehicle (detection of the living thing) is high. It can be done to the accuracy.

なお、図3に於ては、車内に向けてUWB信号Sを発信させるアンテナ部1と、車両外面に向けてUWB信号Sを発信させるアンテナ部1と、を共用(同じアンテナ部1)とし、車内反射信号Raと車外反射信号Rbとを受信するアンテナ部1を共用している場合を図示している。
図示省略するが、車内に向けてUWB信号Sを発信させるアンテナ部1とは別に、車外面に向けてUWB信号Sを発信させるアンテナ部1を設け、さらに、車内反射信号Raを受信するアンテナ部1とは別に、車外反射信号Rbとを受信するアンテナ部1を設けても良い。つまり、車体揺れ検出専用アンテナ部1,1を設けて、車両駐車予定ゾーンZの近傍に配設して、情報処理器8に接続するも良い。
In FIG. 3, the antenna unit 1 for transmitting the UWB signal S toward the inside of the vehicle and the antenna unit 1 for transmitting the UWB signal S toward the outer surface of the vehicle are shared (the same antenna unit 1), The case where the antenna unit 1 receiving the in-vehicle reflection signal Ra and the in-vehicle reflection signal Rb is shared is shown.
Although not shown, in addition to the antenna unit 1 for transmitting the UWB signal S toward the inside of the vehicle, an antenna unit 1 for transmitting the UWB signal S toward the outer surface of the vehicle is provided, and the antenna unit for receiving the in-vehicle reflection signal Ra Apart from 1, the antenna unit 1 may be provided to receive the external reflection signal Rb. That is, the vehicle body shake detection dedicated antenna unit 1 or 1 may be provided, disposed in the vicinity of the vehicle parking scheduled zone Z, and connected to the information processor 8.

さらに、情報処理器8は、車内に生物が残留していることを検出(残留していると判定)すると、生物検知信号を、外部機器である警報発令手段に送信する。
警報発令手段は、スピーカー等の音声発生器、ランプ等の光発生器、モニター等の画面表示器等である。
警報発令手段は、生物検知信号を受信すると警報を発生させる。警報を発生させるとは、スピーカー等によるブザー等の警報音出力、スピーカー等による音声データ等の警告音声出力、ランプ等による点灯や点滅表示、駐車場管理モニターや操作モニター等への警告メッセージ表示等であって、これらの1つ又は組み合わせであっても良い。
Furthermore, when the information processor 8 detects that a living thing remains in the car (determines that it remains), it transmits a biological detection signal to the alarm issuing means which is an external device.
The alarm issuing means is an audio generator such as a speaker, a light generator such as a lamp, a screen display such as a monitor or the like.
The alarm issuing means generates an alarm when the biological detection signal is received. To generate an alarm, output an alarm sound such as a buzzer by a speaker etc., an alarm sound output such as voice data by a speaker etc, lighting or blinking display by a lamp etc, displaying a warning message on a parking lot management monitor or operation monitor etc And may be one or a combination of these.

警報発令手段によって、車外の人(駐車車両Cから離れようとしている運転手や同乗者、或いは、駐車場の管理者や警備者)に、車内に生物が残留している(取り残されている)ことを伝えることができ、置き去りや閉じ込めを確実に阻止できる。   A living thing remains in the car to the person (the driver and the passenger who is going to leave the parking vehicle C, or the manager and the guard of the parking lot) who are going to leave the parking vehicle C by the alarm issuing means (remaining) It can convey things and reliably prevent leaving or confinement.

また、図示省略するが、車両駐車予定ゾーンZ近傍に、駐車車両Cの車高や窓位置等の車両形状を読み取る車形状検出手段を備えている。車形状検出手段は、駐車車両Cの高さ位置(車高)を検出する赤外センサや磁気センサ、ナンバープレートを読取るカメラセンサ等であって、これらの1つ又は組み合わせであっても良い。   Further, although not shown, in the vicinity of the planned vehicle parking zone Z, there is provided a vehicle shape detection means for reading the vehicle shape such as the height and the window position of the parked vehicle C. The vehicle shape detection means is an infrared sensor or a magnetic sensor that detects the height position (vehicle height) of the parked vehicle C, a camera sensor that reads the number plate, or the like, and one or a combination of these may be used.

そして、図4に示すように、駐車車両Cの車高や窓位置等の車体形状に対応するように、アンテナ部1を上下位置調整自在、又は、上下所定間隔をもって配設した複数の上記アンテナ部1,1を選択的に切り換え可能としている。   Then, as shown in FIG. 4, a plurality of the above-mentioned antennas in which the antenna unit 1 can be adjusted in the vertical position or arranged at predetermined vertical intervals so as to correspond to the vehicle shape such as the vehicle height and the window position of the parked vehicle C. The units 1 and 1 can be selectively switched.

アンテナ部1を上下位置調整自在とする上下動手段としては、例えば、上下ガイドレールと、上下ガイドレールを往復走行可能なスライダーと、スライダーに走行力を付与する昇降シリンダ等を設けて、スライダーにアンテナ部1を連結することで、上下位置調整自在とする。   As the vertical movement means for adjusting the vertical position of the antenna unit 1, for example, a vertical guide rail, a slider capable of reciprocatingly moving the vertical guide rail, and an elevating cylinder for applying a running force to the slider are provided. By connecting the antenna unit 1, the vertical position can be adjusted.

また、複数のアンテナ部1,1を選択的に切り換え可能とするアンテナ切換手段は、上下所定間隔をもって(上下位置を相違させて)配設した低位置のアンテナ部1及び高位置のアンテナ部1を、選択的に切り換え使用する。例えば、アンテナ部1と情報処理器8を接続する同軸ケーブル等の配線切換スイッチ器等で行う。   The antenna switching means for selectively switching the plurality of antenna units 1 and 1 is a low-position antenna unit 1 and a high-position antenna unit 1 arranged at predetermined vertical intervals (different vertical positions). Selectively use it. For example, a wiring changeover switch such as a coaxial cable connecting the antenna unit 1 and the information processor 8 is used.

さらに、図5に示すように、生物検出処理中(発信部XからUWB信号Sを発信して、受信部Yにて車内反射信号Raを受信中)、或いは、生物検出処理前に、車内の静止した生物を動作させるための挙動誘発手段5を備えている。
挙動誘発手段5は、情報処理器8、又は、情報処理器8に接続されているパーソナルコンピュータ等の管理用の情報処理装置から、挙動誘発作動開始信号を受信すると、静止した生物を動作させるための挙動誘発作動を行う。
Furthermore, as shown in FIG. 5, during the biological detection process (while transmitting the UWB signal S from the transmitter X and receiving the in-vehicle reflection signal Ra at the receiver Y), or before the biological detection process, A behavior inducing means 5 is provided for operating a stationary organism.
The behavior inducing unit 5 operates a stationary organism upon receiving a behavior inducing operation start signal from the information processor 8 or a management information processor such as a personal computer connected to the information processor 8. Behavior-triggered action.

挙動誘発手段5は、車両駐車予定ゾーンZの近傍に配設されたスピーカー等の音声発生器、フラッシュやランプ等の光発生器等であって、それらの1つ又は組み合わせでも良い。
挙動誘発作動とは、音声発生器にて大きな音や不快な音やメッセージ音声を出力、光発生器にて生物が眩しいと感じるフラッシュ(閃光)や激しく点滅する光の発生等であって、それらの1つ又は組み合わせであっても良い。
このように、挙動誘発手段5を設けることによって、車内で寝ている人や隠れているペットを強制的に動作させることができて、生物の検出精度を向上できる。
The behavior inducing means 5 is an audio generator such as a speaker disposed in the vicinity of the vehicle parking scheduled zone Z, a light generator such as a flash or a lamp, or the like, and may be one or a combination thereof.
Behavior-triggered operation is the generation of loud noise, unpleasant sound or message voice with a voice generator, flash (light) that the creature feels dazzling with a light generator, or the occurrence of intensely flashing light, etc. Or a combination thereof.
As described above, by providing the behavior inducing means 5, it is possible to forcibly operate the person sleeping in the car or the hidden pet, and to improve the detection accuracy of the living thing.

さらに、図5に示すように、アンテナ部1は、機械式立体駐車場のゴンドラGに設けている。また、ゴンドラGに挙動誘発手段5や図示省略の上下動手段を設けている。
ゴンドラGの枠部材やベース部材を利用してアンテナ部1や挙動誘発手段5や上下動手段を容易に設けることができると共に、既設の機械式立体駐車場に対して後付も容易である。
本発明は、置き去りにされると、長時間に渡って周囲から隔離状態となる虞れの高い機械式立体駐車場に最適である。
Furthermore, as shown in FIG. 5, the antenna unit 1 is provided in the gondola G of the mechanical three-dimensional parking lot. Further, the gondola G is provided with the behavior inducing means 5 and the vertical movement means (not shown).
The antenna portion 1, the behavior inducing means 5, and the vertical movement means can be easily provided by utilizing the frame member and the base member of the gondola G, and the retrofit to the existing mechanical parking garage is easy.
The present invention is most suitable for mechanical parking lots, which are likely to be isolated from the environment for a long time if left behind.

なお、本発明は、設計変更可能であって、アンテナ部1は、機械式立体駐車場のゴンドラGに限らず、車両駐車予定ゾーンZの近傍の支柱部や天井部や側壁部に、アンテナ部1を設けるも良い。つまり、機械式立体駐車場に限らず、自走式の立体駐車場や平面駐車場に、本発明を適用するも良い。機械式立体駐車場としては、ゴンドラ式や、パレット(台車)搬送式、昇降エレベータ式等自由である。   In the present invention, the design can be changed, and the antenna unit 1 is not limited to the gondola G of the mechanical three-dimensional parking lot, and the antenna unit is mounted on the support or the ceiling or the side wall in the vicinity of the vehicle parking scheduled zone Z It is also possible to provide one. That is, the present invention may be applied not only to mechanical three-dimensional parking lots but also to self-propelled three-dimensional parking lots and flat parking lots. As a mechanical three-dimensional parking lot, a gondola type, a pallet (cart) transport type, a lift elevator type, etc. are free.

以上のように、本発明の駐車場管理システムは、車両駐車予定ゾーンZの近傍に複数のアンテナ部1,1を配設した駐車場管理システムであって、駐車車両Cの内部に向けてインパルスUWB信号Sを発信する発信部Xとなる一方の上記アンテナ部1と、上記駐車車両Cの内部を反射して通過した車内反射信号Raを受信する受信部Yとなる他方の上記アンテナ部1と、を備え、さらに、上記受信部Yが受信した上記車内反射信号Raの変化を読み取って上記駐車車両Cの内部に生物が残留しているか否かを検出する情報処理器8を備えているので、駐車車両Cの内部に、生物が残留しているか否かを、確実かつ迅速に検出できる。つまり、赤ちゃん等の人やペット等の生物の置き去り(閉じ込め)を防止できる。駐車車両Cの内部を管理人や警備員が目視する必要がなく、プライバシーの保護を実現できる。車両に人検知センサーを設ける必要や、駐車場利用者の事前登録等が不要で、システム導入が容易であると共に、様々な人(車両)が利用する駐車場に最適である。   As described above, the parking lot management system of the present invention is a parking lot management system in which the plurality of antenna units 1 and 1 are disposed in the vicinity of the planned vehicle parking zone Z. One of the antenna unit 1 serving as the transmitting unit X for transmitting the UWB signal S, and the other antenna unit 1 serving as the receiving unit Y for receiving the in-vehicle reflection signal Ra reflected and passed through the interior of the parked vehicle C And the information processor 8 for detecting whether or not a living thing remains in the interior of the parked vehicle C by reading the change in the in-vehicle reflection signal Ra received by the receiving unit Y. Whether or not a living thing remains in the interior of the parked vehicle C can be detected reliably and quickly. That is, it is possible to prevent leaving (confining) of a person such as a baby or a living thing such as a pet. There is no need for a manager or a guard to look inside the parking vehicle C, and privacy can be protected. It is not necessary to provide a human detection sensor in the vehicle, it is not necessary to pre-register the parking lot user, etc., it is easy to introduce the system, and it is optimal for the parking lot used by various people (vehicles).

また、一方の上記アンテナ部1及び上記他方のアンテナ部1は、上記インパルスUWB信号Sを発信する上記発信部Xと、上記車内反射信号Raを受信する上記受信部Yと、に交互に切り替わるので、一方のアンテナ部1からUWB信号Sを発信した場合に、車内においてUWB信号Sが届いていなかった不感地帯を、他方のアンテナ部1から発信したUWB信号Sが届いて感知地帯(検出範囲)とでき、生物の検出精度(信頼性)を向上できる。車内の様々な箇所を高精度に検出できる。ワンボックスカー等の大型車両であっても確実に生物を検出できる。   Further, one of the antenna unit 1 and the other antenna unit 1 are alternately switched to the transmitting unit X that transmits the impulse UWB signal S and the receiving unit Y that receives the in-vehicle reflection signal Ra. When the UWB signal S is transmitted from one of the antenna units 1, the UWB signal S transmitted from the other antenna unit 1 reaches a dead zone where the UWB signal S has not arrived in the car and a sensing zone (detection range) And the detection accuracy (reliability) of the living being can be improved. It can detect various places in the car with high accuracy. Even large vehicles such as one-box cars can reliably detect organisms.

また、上記情報処理器8は、上記駐車車両Cの外面によって反射した車外反射信号Rbの変化を、上記車内反射信号Raの変化からキャンセルする車体揺れ分離処理を行うので、車体揺れによる悪影響(生物検出の失敗)を防止でき、信頼性を向上できる。車体揺れが発生しやすい機械式立体駐車場に好適である。   Further, since the information processor 8 cancels the change in the external reflection signal Rb reflected by the outer surface of the parked vehicle C from the change in the in-vehicle reflection signal Ra, the information processor 8 cancels the vehicle shake separation processing. Failure in detection can be prevented and reliability can be improved. It is suitable for a mechanical three-dimensional parking lot in which body sway is likely to occur.

また、上記駐車車両Cの内部の静止した生物を動作させるための挙動誘発手段5を備えているので、車内で寝ている人や隠れているようなペットを強制的に動作させることができ、容易かつ確実に生物を検出できる。   Further, since the behavior inducing means 5 for operating the stationary creature inside the parking vehicle C is provided, it is possible to forcibly operate a person sleeping in the vehicle or a pet that is hiding in the vehicle, It can detect organisms easily and reliably.

また、上記アンテナ部1は、機械式立体駐車場のゴンドラGに設けられ、上記アンテナ部1を上下位置調整自在、又は、上下所定間隔をもって配設した複数の上記アンテナ部1,1を選択的に切り換え可能としたので、様々な車種に対して、確実かつ高精度に生物検出を行うことができる。既設の機械式立体駐車場に容易かつ迅速に適用できる。   Further, the antenna unit 1 is provided in a gondola G of a mechanical three-dimensional parking lot, and the antenna units 1 can be adjusted in the vertical position, or a plurality of the antenna units 1, 1 arranged at predetermined vertical intervals are selectively selected. Therefore, biological detection can be performed reliably and accurately for various vehicle types. It can be easily and quickly applied to existing mechanical multi-storey parking lots.

1 アンテナ部
5 挙動誘発手段
8 情報処理器
C 駐車車両
G ゴンドラ
Ra 車内反射信号
Rb 車外反射信号
S インパルスUWB信号
X 発信部
Y 受信部
Z 車両駐車予定ゾーン
Reference Signs List 1 antenna unit 5 behavior inducing means 8 information processor C parking vehicle G gondola Ra in-vehicle reflection signal Rb external reflection signal S impulse UWB signal X transmission unit Y reception unit Z vehicle parking scheduled zone

Claims (5)

車両駐車予定ゾーン(Z)の近傍に複数のアンテナ部(1)(1)を配設した駐車場管理システムであって、
駐車車両(C)の内部に向けてインパルスUWB信号(S)を発信する発信部(X)となる一方の上記アンテナ部(1)と、上記駐車車両(C)の内部を反射して通過した車内反射信号(Ra)を受信する受信部(Y)となる他方の上記アンテナ部(1)と、を備え、
さらに、上記受信部(Y)が受信した上記車内反射信号(Ra)の変化を読み取って上記駐車車両(C)の内部に生物が残留しているか否かを検出する情報処理器(8)を備えていることを特徴とする駐車場管理システム。
A parking lot management system in which a plurality of antenna units (1) and (1) are disposed in the vicinity of a planned vehicle parking zone (Z),
One antenna unit (1) serving as a transmitting unit (X) transmitting an impulse UWB signal (S) to the inside of the parking vehicle (C), and the inside of the parking vehicle (C) are reflected and passed The other antenna unit (1) serving as a receiving unit (Y) for receiving an in-vehicle reflection signal (Ra);
Furthermore, an information processor (8) for detecting whether or not a living thing remains in the interior of the parked vehicle (C) by reading a change in the in-vehicle reflection signal (Ra) received by the receiver (Y) The parking lot management system characterized by having.
一方の上記アンテナ部(1)及び上記他方のアンテナ部(1)は、上記インパルスUWB信号(S)を発信する上記発信部(X)と、上記車内反射信号(Ra)を受信する上記受信部(Y)と、に交互に切り替わる請求項1記載の駐車場管理システム。   One of the antenna unit (1) and the other antenna unit (1) are the transmission unit (X) that transmits the impulse UWB signal (S) and the reception unit that receives the in-vehicle reflection signal (Ra) The parking lot management system according to claim 1, wherein (Y) and (Y) are alternately switched. 上記情報処理器(8)は、上記駐車車両(C)の外面によって反射した車外反射信号(Rb)の変化を、上記車内反射信号(Ra)の変化からキャンセルする車体揺れ分離処理を行う請求項1又は2記載の駐車場管理システム。   The information processor (8) performs vehicle body swing separation processing for canceling the change of the external reflection signal (Rb) reflected by the outer surface of the parked vehicle (C) from the change of the internal reflection signal (Ra). The parking lot management system according to 1 or 2. 上記駐車車両(C)の内部の静止した生物を動作させるための挙動誘発手段(5)を備えている請求項1,2又は3記載の駐車場管理システム。   The parking lot management system according to claim 1, 2 or 3, further comprising behavior inducing means (5) for operating a stationary organism inside the parked vehicle (C). 上記アンテナ部(1)は、機械式立体駐車場のゴンドラ(G)に設けられ、
上記アンテナ部(1)を上下位置調整自在、又は、上下所定間隔をもって配設した複数の上記アンテナ部(1)(1)を選択的に切り換え可能とした請求項1,2,3又は4記載の駐車場管理システム。
The antenna unit (1) is provided in a gondola (G) of a mechanical three-dimensional parking lot,
5. The switch according to claim 1, 2, 3 or 4, wherein the antenna unit (1) can be adjusted up and down, or a plurality of the antenna units (1) (1) arranged at predetermined intervals up and down can be selectively switched. Parking lot management system.
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JP7438064B2 (en) 2020-08-28 2024-02-26 株式会社デンソーテン Parking assistance device, parking assistance system, and parking assistance method

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CN110874580A (en) * 2019-11-18 2020-03-10 广东博智林机器人有限公司 In-vehicle living body detection system
JP7438064B2 (en) 2020-08-28 2024-02-26 株式会社デンソーテン Parking assistance device, parking assistance system, and parking assistance method

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