JP5404466B2 - Parking lot entrance warning device - Google Patents
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- JP5404466B2 JP5404466B2 JP2010031997A JP2010031997A JP5404466B2 JP 5404466 B2 JP5404466 B2 JP 5404466B2 JP 2010031997 A JP2010031997 A JP 2010031997A JP 2010031997 A JP2010031997 A JP 2010031997A JP 5404466 B2 JP5404466 B2 JP 5404466B2
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Description
本発明は、駐車場出入口に設置して歩行者や自動車の通行を検知し、歩行者や運転者に警報を発する駐車場出入口の警報装置に関するものである。 The present invention relates to an alarm device for a parking lot entrance that is installed at a parking lot entrance and detects traffic of a pedestrian or a car and issues a warning to a pedestrian or a driver.
駐車場出入口に光学式または電磁式のセンサを設置し、物体を検知したときにブザーやパトライト等によって警報を発するようにした駐車場出入口の警報装置は広く普及している。しかしその多くは自動車と人とを識別することができないため、無差別に警報を発するのみである。 2. Description of the Related Art An alarm device for a parking lot entrance / exit in which an optical or electromagnetic sensor is installed at the entrance / exit of a parking lot and an alarm is issued by a buzzer, a patrol light or the like when an object is detected is widely used. However, since many of them cannot distinguish between cars and people, they only issue warnings indiscriminately.
そこで特許文献１に示されるように、一定間隔を設けて２個のセンサを配置し、両方のセンサが同時に検知信号を発したときには自動車と判定し、個別に検知信号を発したときには人と判定するようにした立体駐車場出入口の警報装置も提案されている。 Therefore, as shown in Patent Document 1, two sensors are arranged at a fixed interval, and when both sensors issue detection signals at the same time, it is determined as a car, and when they individually detect detection signals, they are determined as humans. An alarm device for the entrance and exit of a multi-story parking lot has been proposed.
しかしこの特許文献１の装置は、人と自動車を確実に識別するために２個のセンサの設置間隔を人体の幅よりも広い１ｍ程度としなければならず、設置工事に手数を要するという問題があった。また立体駐車場出入口のような狭い範囲の監視には適しているが、歩道に面して地上に設置されている大型の駐車場のような幅広の駐車場出入口には不向きであった。 However, the device of Patent Document 1 has a problem that the installation interval between the two sensors must be about 1 m wider than the width of the human body in order to reliably identify a person and a vehicle, and installation work is troublesome. there were. It is suitable for monitoring a narrow area such as a multilevel parking lot entrance / exit, but not suitable for a wide parking lot entrance such as a large parking lot facing the sidewalk.
本発明の目的は上記した従来の問題点を解決し、自動車と人とを識別してそれぞれに応じた警報を発することができ、しかも設置工事が簡単で、幅広の駐車場出入口に適した駐車場出入口の警報装置を提供することである。 The object of the present invention is to solve the above-mentioned conventional problems, distinguish between a car and a person and issue a warning according to each, and the installation work is simple and suitable for a wide parking lot entrance / exit. It is to provide a warning device at the entrance of the parking lot.
上記の課題を解決するためになされた本発明の駐車場出入口の警報装置は、駐車場の出入口に小間隔Ｌを明けて２個配置されたレーザセンサと、これらのレーザセンサに接続された演算装置と、警報器とからなり、演算装置は、自動車または人の通過によりこれらのレーザセンサが順次遮光されたとき、レーザセンサ間の遮光時間差ｔとそのｎ倍の遅延時間ｎｔとを演算する演算手段と、遅延時間ｎｔ中の遮光状態により自動車と人を判別する判別手段とを備え、警報器は判別結果に応じた警報を発する機能を備えたものであることを特徴とするものである。 The parking lot entrance / exit alarm device of the present invention, which has been made to solve the above-described problems, includes two laser sensors arranged at a small interval L at the entrance / exit of the parking lot, and an operation connected to these laser sensors. An arithmetic unit comprising a device and an alarm device, when these laser sensors are sequentially shielded by the passage of a car or a person, computes a light shielding time difference t between the laser sensors and a delay time nt that is n times that time. And a discriminating means for discriminating between a car and a person based on a light shielding state during a delay time nt, and the alarm device has a function of issuing an alarm according to the discrimination result.
なお請求項２のように、判別手段は、遅延時間ｎｔ中に遮光が連続する場合に、自動車と判別する機能を備えたものとすることができる。また請求項３のように、判別手段は、遅延時間ｎｔの間に入光と遮光とが繰り返される場合に、遮光時間の積算値により自動車と人を判別する機能を備えたものとすることができる。さらに請求項４のように、判別手段は、所定時間以上連続して遮光されたときに、異常と判断する機能を備えたものであることが好ましい。 Note that, as in claim 2, the determination means may be provided with a function of determining that the vehicle is an automobile when light shielding continues during the delay time nt. According to a third aspect of the present invention, the discriminating means has a function of discriminating between a car and a person based on the integrated value of the light shielding time when the incident light and the light shielding are repeated during the delay time nt. it can. Further, as defined in claim 4, it is preferable that the discriminating means has a function of judging an abnormality when the light is continuously shielded from light for a predetermined time.
本発明の駐車場出入口の警報装置は、駐車場の出入口に小間隔Ｌを明けて２個配置されたレーザセンサ間の遮光時間差ｔに基づいてそのｎ倍の遅延時間ｎｔを演算し、遅延時間ｎｔ中の遮光状態により自動車と人を判別する方式を採用したため、２個のレーザセンサの設置間隔Ｌを人体の幅よりも狭くすることができ、受光部を一体化することが可能であるから、設備の小型化と設置工事の簡素化が可能である。 The parking lot doorway alarm device of the present invention calculates a delay time nt that is n times the delay time nt based on a light blocking time difference t between two laser sensors arranged at a small interval L at the parking lot doorway. Since the method of discriminating between the automobile and the person is adopted based on the light-shielding state during nt, the installation interval L of the two laser sensors can be made narrower than the width of the human body, and the light receiving unit can be integrated. It is possible to downsize equipment and simplify installation work.
また本発明の駐車場出入口の警報装置は、自動車と人を判別して進行方向に応じた様々な警報を発することが可能である。さらに本発明の駐車場出入口の警報装置は、レーザセンサを用いているために幅数十ｍの区間をカバーすることができ、幅広の駐車場出入口にも適用することができる。 Moreover, the parking device entrance / exit warning device of the present invention is capable of discriminating between cars and people and issuing various warnings according to the traveling direction. Furthermore, since the parking device doorway alarm device of the present invention uses a laser sensor, it can cover a section of several tens of meters in width and can be applied to a wide parking lot doorway.
以下に本発明の好ましい実施形態を示す。
図１は本発明の実施形態を示すブロック図であり、１は駐車場の出入口の片側に設置されるレーザ検出器、２は出入口の反対側に設置されるレーザ光線の反射器、３はレーザ検出器１に接続された演算装置、４は警報器である。
Preferred embodiments of the present invention are shown below.
FIG. 1 is a block diagram showing an embodiment of the present invention. 1 is a laser detector installed on one side of a parking lot entrance, 2 is a laser beam reflector installed on the opposite side of the entrance, and 3 is a laser. An arithmetic unit 4 connected to the detector 1 is an alarm.
レーザ検出器１は図２に示されるように、自立式センサボックスの内部に小間隔Ｌを明けて配置された２個のレーザセンサ５、６を備えている。小間隔Ｌは人体の幅よりも狭くすることができ、好ましくは１０〜２０ｃｍ程度である。地上からの高さは車高の低い自動車が駐車場の出入口を走行した場合にも確実に検出できる高さとする。２個のレーザセンサ５、６は駐車場の出入口における自動車の走行方向と平行に設置する。 As shown in FIG. 2, the laser detector 1 includes two laser sensors 5 and 6 arranged with a small interval L inside a self-supporting sensor box. The small interval L can be made narrower than the width of the human body, and is preferably about 10 to 20 cm. The height from the ground is a height that can be reliably detected even when a car with a low vehicle height travels through the entrance of a parking lot. The two laser sensors 5 and 6 are installed in parallel with the traveling direction of the automobile at the entrance / exit of the parking lot.
この実施形態では、各レーザセンサ５、６はレーザ投光器と受光器とを内蔵するものである。レーザ光線の反射器２も自立式センサボックスの内部に小間隔Ｌを明けて配置された２個の回帰反射型のレーザ反射板７、８を備えている。レーザセンサ５、６から投光されたレーザ光線はレーザ反射板７、８によって反射してレーザセンサ５、６により受光される。 In this embodiment, each of the laser sensors 5 and 6 includes a laser projector and a light receiver. The laser beam reflector 2 is also provided with two retro-reflective laser reflectors 7 and 8 arranged with a small interval L inside the self-supporting sensor box. Laser beams projected from the laser sensors 5 and 6 are reflected by the laser reflectors 7 and 8 and received by the laser sensors 5 and 6.
このような反射式のほか、図３に示すようにレーザセンサ５、６を受光専用とし、レーザ反射板７、８をレーザ投光器９、１０に置き換えて投受光式のレーザ検出器とすることもできる。 In addition to such a reflection type, as shown in FIG. 3, the laser sensors 5 and 6 may be dedicated to light reception, and the laser reflection plates 7 and 8 may be replaced with laser projectors 9 and 10 to form a light projection / reception type laser detector. it can.
図２の反射式の場合にはレーザ検出器１と反射器２との最大間隔を１５ｍ程度、図３の投受光式の場合にはレーザ検出器１とレーザ投光器との最大間隔を６０ｍ程度とすることができる。図２の反射式の場合には２個のレーザセンサ５、６の間隔Ｌは１０〜２０ｃｍ程度、図３の投受光式の場合には２個のレーザセンサ５、６の間隔Ｌは２０〜４０ｃｍ程度が好ましい。このように何れの場合にも２個のレーザセンサ５、６の間隔Ｌは狭くすることができるから、一体型のレーザ検出器１とすることができる。レーザ検出器１と反射器２、あるいはレーザ検出器１とレーザ投光器９、１０は正対させて設置してもよいが、図４などに示すようにやや斜め方向にずらして設置することが、検出精度を高めるために有効である。 In the case of the reflection type of FIG. 2, the maximum distance between the laser detector 1 and the reflector 2 is about 15 m, and in the case of the light projection / reception type of FIG. 3, the maximum distance between the laser detector 1 and the laser projector is about 60 m. can do. In the case of the reflection type in FIG. 2, the distance L between the two laser sensors 5 and 6 is about 10 to 20 cm, and in the case of the light emitting and receiving type in FIG. About 40 cm is preferable. As described above, in any case, the distance L between the two laser sensors 5 and 6 can be narrowed, so that the integrated laser detector 1 can be obtained. The laser detector 1 and the reflector 2 or the laser detector 1 and the laser projectors 9 and 10 may be installed so as to face each other. However, as shown in FIG. This is effective for increasing the detection accuracy.
このように配置した２個のレーザセンサ５、６は、レーザ光線が自動車または人により遮光されると、演算装置３に信号を出力する。演算装置３は演算手段１１と、判別手段１２と、誤動作防止手段１３とを備えている。自動車または人が出入り口を通過すると、レーザセンサ５、６は必ず順次遮光されるので、演算装置３は遮光時間差ｔを演算する。レーザセンサ５、６間の間隔Ｌは一定であるから、速度をＶとするとｔ＝Ｌ/Ｖである。なお何れのレーザセンサ５、６が先に遮光されるかによって、進行方向を検出することができる。 The two laser sensors 5 and 6 arranged in this way output a signal to the arithmetic unit 3 when the laser beam is shielded by an automobile or a person. The arithmetic device 3 includes arithmetic means 11, determination means 12, and malfunction prevention means 13. When a car or a person passes through the doorway, the laser sensors 5 and 6 are always shielded sequentially, so that the computing device 3 computes the shielding time difference t. Since the distance L between the laser sensors 5 and 6 is constant, when the speed is V, t = L / V. The traveling direction can be detected depending on which laser sensor 5 or 6 is shielded first.
次に演算装置３は、遮光時間差ｔのｎ倍の遅延時間ｎｔを演算する。Ｌが２０ｃｍの場合にはｎは６〜１０程度とし、Ｌが１０ｃｍの場合にはｎは１０〜２０程度とすることが好ましい。ｎは必ずしも整数である必要はない。速度Ｖで走行している車体の先端がレーザセンサ５、６を順次遮光するとき、遮光時間差ｔの間に距離Ｌを走行したこととなる。このため速度Ｖが一定とすれば、遅延時間ｎｔの間に距離ｎＬを走行するはずである。仮にＬ＝２０ｃｍ、ｎ＝１０とすると、遅延時間ｔの長短にかかわらず遅延時間ｎｔの間に２００ｃｍ移動することとなる。 Next, the computing device 3 computes a delay time nt that is n times the light shielding time difference t. When L is 20 cm, n is preferably about 6 to 10, and when L is 10 cm, n is preferably about 10 to 20. n is not necessarily an integer. When the front end of the vehicle body traveling at the speed V shields the laser sensors 5 and 6 sequentially, the vehicle travels the distance L during the light shielding time difference t. Therefore, if the speed V is constant, the vehicle should travel a distance nL during the delay time nt. If L = 20 cm and n = 10, it moves 200 cm during the delay time nt regardless of the length of the delay time t.
遮光したものが自動車である場合、車体の長さは２ｍ以上はあるから、車体の先端が２００ｃｍを移動してもなおレーザセンサ５、６は車体により遮光されたままである。これに対して、遮光したものが人である場合には人体の幅は１ｍ以下であるから、２００ｃｍを移動するまでにレーザセンサ５、６はレーザ光線を受光するはずである。このため遅延時間ｎｔ中の遮光状態によって、判別手段１２は自動車か人かを判別する。この本発明の方式の利点は、通過速度Ｖとは無関係に判別が行えることであり、自動車が人の歩行速度と同じ低速で走行しても、あるいは人が高速でレーザセンサ５、６の前を走りぬけても、判断を誤ることはない。 When the light shield is an automobile, the length of the vehicle body is 2 m or more, so that the laser sensors 5 and 6 are still shielded from light by the vehicle body even when the tip of the vehicle body moves 200 cm. On the other hand, since the human body has a width of 1 m or less when the light shield is a person, the laser sensors 5 and 6 should receive the laser beam before moving 200 cm. For this reason, the discriminating means 12 discriminates whether it is a car or a person according to the light shielding state during the delay time nt. The advantage of the method of the present invention is that the determination can be made regardless of the passing speed V. Even if the automobile runs at the same low speed as the walking speed of the person, or the person is in front of the laser sensors 5 and 6 at a high speed. Even if you run through, you will not make a mistake.
この判別手段１２の動作をさらに具体的に説明すると、まず遅延時間ｎｔ中に遮光が連続する場合には、乗用車やトラックのような連続した車体を有する自動車が通過した場合であるから、自動車と判断する。しかしトレーラのように運転席と荷台とが分離しているような自動車では、車体の先端から距離ｎＬの位置が連結部となり、遅延時間ｎｔ中に入光と遮光とが繰り返される。また人であっても数人のグループが通過したような場合には、入光と遮光とが繰り返される。 The operation of the discriminating means 12 will be described in more detail. First, when light shielding continues during the delay time nt, a car having a continuous vehicle body such as a passenger car or a truck has passed. to decide. However, in a vehicle such as a trailer in which the driver's seat and the loading platform are separated, the position at a distance nL from the front end of the vehicle body becomes a connecting portion, and light incident and light shielding are repeated during the delay time nt. In addition, even if a person is a group of several people, light incident and light shielding are repeated.
すなわち、これらの場合にはいずれも遅延時間ｎｔの間にレーザセンサ５、６への入光と遮光とが繰り返されることとなるので、判別手段１２は断続する遮光時間の積算値を演算する。そしてその積算値が遅延時間ｎｔの何割を占めるかにより、自動車と人を判別する。具体的には、自動車の場合には遮光割合は９割以上となると考えられ、人の場合には６割以下と考えられる。そこでその中間値を基準としてそれよりも遮光割合が大きい場合には自動車、小さい場合には人と判別する。この様子は図７のタイムチャートに示されている。 That is, in any of these cases, since the light incident on the laser sensors 5 and 6 and the light shielding are repeated during the delay time nt, the determination unit 12 calculates an integrated value of the intermittent light shielding time. A car and a person are discriminated according to what percentage of the delay time nt the integrated value occupies. Specifically, in the case of an automobile, the light shielding ratio is considered to be 90% or more, and in the case of a person, it is considered to be 60% or less. Therefore, with the intermediate value as a reference, it is determined that the vehicle is a car when the shading ratio is larger than that, and that it is a person when it is small. This situation is shown in the time chart of FIG.
このようにして判別手段１２が駐車場に進入する自動車と判別した場合には、警報器４に信号を送り、図４に示すように警報器４のスピーカ１５から例えば「車を定位置に止め、エンジンを切って下さい」というメッセージを出力する。また判別手段１２が駐車場から出る自動車と判別した場合には、図５に示すように警報器４のパトライト１４を点灯するとともに、スピーカ１５から例えば「車が出ます、ご注意下さい」というメッセージを出力する。また判別手段１２が人の通過と判別した場合には、図６に示すように警報器４のスピーカ１５から例えば「車にご注意下さい」というメッセージを出力する。 In this way, when the discriminating means 12 discriminates an automobile entering the parking lot, a signal is sent to the alarm device 4 and, for example, “the vehicle is stopped at a fixed position” from the speaker 15 of the alarm device 4 as shown in FIG. , Please turn off the engine. " When the discriminating means 12 discriminates that the car is leaving the parking lot, the patrol light 14 of the alarm device 4 is turned on as shown in FIG. 5, and a message such as “Care out, please be careful” from the speaker 15, for example. Is output. If the determination means 12 determines that a person has passed, for example, a message “Please pay attention to the car” is output from the speaker 15 of the alarm device 4 as shown in FIG.
なお、人または自動車がレーザセンサ５、６の前で止まってしまった場合には、本発明の機能が発揮できない。そこで連続遮光時間が長すぎる場合には、誤動作防止手段１３が不正遮光と判断して機能を停止し、誤動作を防止する。また片方のレーザセンサのみが遮光され他方が遮光されない場合には、落ち葉等が貼りついた可能性があるため、やはり不正遮光と判断して機能を停止し、誤動作を防止する。これらの様子は図８のタイムチャートに誤動作防止として示されている。 In addition, when a person or a car stops in front of the laser sensors 5 and 6, the function of the present invention cannot be exhibited. Therefore, when the continuous light shielding time is too long, the malfunction prevention means 13 determines that the light is improperly shielded, stops the function, and prevents malfunction. Further, when only one laser sensor is shielded and the other is not shielded, there is a possibility that fallen leaves or the like are stuck. Therefore, it is determined that the shield is illegally shielded, and the function is stopped to prevent malfunction. These states are shown as malfunction prevention in the time chart of FIG.
以上に説明したように、本発明の本発明の駐車場出入口の警報装置は、２個のレーザセンサ５、６の設置間隔Ｌを人体の幅よりも狭くして設備の小型化と設置工事の簡素化を図ることができ、しかも自動車と人を正確に判別して進行方向に応じた様々な警報を発することが可能な利点がある。またレーザセンサを使用しているので、出入口の幅が広い駐車場にも適用することができる。 As described above, the parking lot doorway alarm device of the present invention of the present invention reduces the size of the equipment and reduces the installation work by making the installation interval L of the two laser sensors 5 and 6 narrower than the width of the human body. There is an advantage that simplification can be achieved, and various warnings can be issued according to the traveling direction by accurately discriminating between a car and a person. Moreover, since the laser sensor is used, it can be applied to a parking lot having a wide entrance and exit.
１ レーザ検出器
２ 反射器
３ 演算装置
４ 警報器
５ レーザセンサ
６ レーザセンサ
７ レーザ反射板
８ レーザ反射板
９ レーザ投光器
１０ レーザ投光器
１１ 演算手段
１２ 判別手段
１３ 誤動作防止手段
１４ パトライト
１５ スピーカ
DESCRIPTION OF SYMBOLS 1 Laser detector 2 Reflector 3 Arithmetic device 4 Alarm device 5 Laser sensor 6 Laser sensor 7 Laser reflector 8 Laser reflector 9 Laser projector 10 Laser projector 11 Calculation means 12 Discriminating means 13 Malfunction prevention means 14 Patrite 15 Speaker
Claims (4)
演算装置は、自動車または人の通過によりこれらのレーザセンサが順次遮光されたとき、レーザセンサ間の遮光時間差ｔとそのｎ倍の遅延時間ｎｔとを演算する演算手段と、遅延時間ｎｔ中の遮光状態により自動車と人を判別する判別手段とを備え、
警報器は判別結果に応じた警報を発する機能を備えたものであることを特徴とする駐車場出入口の警報装置。 It consists of two laser sensors arranged at a small interval L at the entrance / exit of the parking lot, an arithmetic unit connected to these laser sensors, and an alarm device,
The arithmetic unit is configured to calculate arithmetic means for calculating a light shielding time difference t between the laser sensors and a delay time nt that is n times greater than the laser sensors when the laser sensors are sequentially shielded by the passage of an automobile or a person, and light shielding during the delay time nt. A discriminating means for discriminating a car and a person according to the state;
An alarm device for a parking lot entrance / exit, wherein the alarm device has a function of issuing an alarm according to a discrimination result.
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| KR101653186B1 (en) * | 2015-06-16 | 2016-09-01 | 주식회사소노위즈 | Parking lot entrance traffic guiding apparatus based on moving object detection using radar |
| KR101816419B1 (en) | 2016-06-28 | 2018-01-09 | 김보성 | Automatic passing gate for analysing images of traffic light |
| KR102028051B1 (en) * | 2019-01-18 | 2019-10-02 | 블루코스텍 주식회사 | Alram system of emergency vehicle movement |
| JP7363084B2 (en) * | 2019-04-24 | 2023-10-18 | 三菱電機株式会社 | control system |
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| JPH10302191A (en) * | 1997-04-23 | 1998-11-13 | Matsushita Electric Works Ltd | Passage object discrimination device |
| JP2001357488A (en) * | 2000-06-13 | 2001-12-26 | Mitsubishi Heavy Ind Ltd | Vehicle dimension measuring device |
| JP2002074421A (en) * | 2000-08-31 | 2002-03-15 | Mitsubishi Heavy Ind Ltd | Detecting method for moving object, and vehicle detector |
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