JP2009054108A - Illegal parking warning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve an illegal parking warning system configured so as to be easily mounted and used as a product to be installed by applying a communication function to be used for detecting the wheel positions of a tire air pressure detection device. <P>SOLUTION: This illegal parking warning systems 1a and 1b are provided with trigger transmitters 20 and 60 installed in the neighborhood of a parking space; a transmitter 10 installed in each wheel 200 of a vehicle 100; and a controller 40. The transmitter 10 transmits a response signal including the identification information (ID) of a self-transmitter 10 as a response to trigger signals transmitted from the trigger transmitters 20 and 60. The controller 40 receives a response signal from each transmitter 10, and decides whether or not the ID included in the received response signal is matched with preliminarily registered permission ID. Then, when the received ID is not matched with the permission ID, a warning unit 50 or the trigger transmitter 60 with the warning unit is made to issue a warning. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique that applies a wheel position detection function of a tire air pressure detection device, and more particularly to a technique for notifying an alarm for an illegally parked vehicle.

  Conventionally, a direct type is known as one of tire pressure detectors (TPMS: Tire Pressure Monitoring System) (see, for example, Patent Document 1). In this type of tire air pressure detecting device, a transmitter having a pressure sensor is directly attached to a wheel side to which a tire is attached. Also, a receiver is provided on the vehicle body side, and when the detection signal from the pressure sensor is transmitted from the transmitter on the wheel side, the detection signal is received by the receiver on the vehicle body side, and the tire air pressure is detected. To be done.

In such a direct tire pressure detection device, in order to determine which wheel each transmitter is attached to, the position of the wheel is specified by estimating the distance between the transmitter and the receiver by detecting the electric field strength. It is carried out. More specifically, as described in Patent Document 1, electric field strength (hereinafter referred to as reception strength) at the time of receiving a trigger signal from a trigger device provided on the vehicle body side by a transmitter attached to each wheel. Is transmitted, and data indicating the acquired reception intensity is transmitted to the receiver. Further, identification information (ID) for identifying each transmitter is also notified from the transmitter to the receiver. On the receiver side, the distance between the trigger machine and each transmitter is specified from this received intensity, and further, each transmitter is identified by the ID, so that it is possible to determine which wheel each transmitter is on. is doing.
JP 2007-15491 A

  By the way, it is thought that the further spread expansion can be aimed at by adding various additional functions to which the communication function used in the wheel position detection of the tire pressure detection device as described above is applied to the tire pressure detection device.

  Therefore, an application to an unauthorized parking warning system capable of notifying an administrator of the vehicle or the parking lot against an unauthorized vehicle that should not be parked in the parking space. investigated. Conventionally, in order to prevent unauthorized parking, large-scale facilities such as a dedicated gate facility and a vehicle authentication system have been required to eliminate unauthorized parking vehicles. However, it is difficult to implement these equipments as retrofit products, and this has been a problem for further spread of unauthorized parking warning systems. Therefore, if an unauthorized parking warning system as an additional function of the tire air pressure detection device is realized by applying the communication function used in the wheel position detection of the tire air pressure detection device, it will be further spread as a product with higher added value Is expected.

  The present invention has been made in order to solve the above-mentioned problems. By applying a communication function used for detecting the wheel position of the tire air pressure detection device, it is illegal to easily install and use as a retrofitted product. The purpose is to realize a parking warning system.

  The unauthorized parking warning system according to claim 1, which has been made to achieve the above object, transmits a trigger transmitter installed in the vicinity of the parking space to the extent that the parking space is included in its communication range, and transmitted from the trigger transmitter. As a response to the triggered signal, an in-vehicle transmitter that transmits a response signal including identification information for identifying itself, an alarm means for informing an alarm to warn of illegal parking, and the received response It is determined whether or not the identification information included in the signal matches the pre-registered permission identification information, and when it is determined that the identification information does not match, the alarm control means for notifying the alarm means of an alarm is provided. And

  According to the unauthorized parking warning system configured as described above, the user of the parking lot uses the unauthorized parking warning system only by providing on the vehicle side the vehicle-mounted transmitter that transmits a response signal to the trigger signal from the trigger transmitter. be able to. Therefore, an unauthorized parking warning system can be realized in a mode that can be easily equipped and used as a retrofit product. The communication between the trigger transmitter, the in-vehicle transmitter and the response receiving means in the present invention can be applied from the communication function used in the wheel position detection of the above-described tire air pressure detection device. Therefore, as described in claim 9, the in-vehicle transmitter of the present invention is also used as a transmitter of a tire pressure measuring device including a pressure measuring device for measuring tire pressure, thereby adding a tire pressure detecting device. An unauthorized parking warning system as a function will be realized, and it is expected that it will be further spread as a product with higher added value.

  In addition, as a facility on the parking lot side, a trigger transmitter is appropriately placed near the parking space, for example, on the boundary line of the parking space or near the wall, etc., and monitoring for illegal parking is performed at necessary locations according to the shape of the parking space. It can be performed. By adopting such a configuration, it is possible to easily arrange the trigger transmitter in a necessary place even by retrofitting. In particular, as described in claim 8, it can be easily equipped as a retrofit product on the parking lot side by configuring it with any number of units that can be placed in any location according to the shape of the parking area. An illegal parking warning system can be constructed in an available manner.

  Furthermore, as described in claim 2, there is provided detection means for detecting the entry of the vehicle into the parking space, and transmitted from the trigger transmitter in a state where the entry of the vehicle into the parking space is detected by the detection means. The alarm may be notified even when a response signal to the trigger signal is not received. In this way, not only when the received identification information does not match the permission identification information, but also when the identification information is not transmitted even though the vehicle is about to enter the vehicle, an alarm can be notified. In other words, in addition to the fact that the identification information of the in-vehicle transmitter does not match the permission identification information, an alarm can be issued even for an illegally parked vehicle that is not equipped with the in-vehicle transmitter itself, and a more effective system Can be built.

  By the way, as a method for registering permission identification information for identifying a vehicle that can be parked in advance, a registration mode for registering permission identification information can be selectively executed as described in claim 3. When executing this registration mode, first, a trigger signal is transmitted from the trigger transmitter, and the identification information included in the response signal transmitted from the in-vehicle transmitter as a response to the transmitted trigger signal is stored as permission identification information. Good. In order to select execution of the registration mode, for example, a method in which a driver of a vehicle to be registered, a manager of a parking lot, or the like inputs some instruction to the alarm control means may be considered.

  According to the unauthorized parking warning system configured as described above, it becomes possible to automatically register the permission identification information using communication between the trigger transmitter, the in-vehicle transmitter, and the response receiving means. A vehicle registered as a parked vehicle can use the parking lot smoothly.

  Next, the unauthorized parking warning system according to claim 4 has the following characteristics. The alarm control means causes each trigger transmitter to sequentially transmit a trigger signal in a predetermined order, and determines whether each trigger transmitter and each response signal are based on this transmission order and the order in which the response signals are received from each in-vehicle transmitter. The location of the corresponding trigger transmitter is identified from the correspondence relationship. And it is characterized by making an alarm means alert | report the alarm which makes object the trigger transmitter of the specified said location.

  By configuring in this way, it is possible to identify which trigger transmitter the received response signal corresponds to from the correspondence between the trigger signal transmission order and the response signal reception order for the trigger signal. can do. Therefore, it is possible to individually determine conformity with the permission identification information for a plurality of trigger transmitters installed, and trigger transmission that transmits a trigger signal to the in-vehicle transmitter that is the transmission source of unauthorized identification information. Alarms targeting the aircraft can be individually notified, and illegal parking can be effectively monitored.

  In addition, as a method of alerting in a manner that clearly indicates a trigger transmitter to be alerted, there is a method of concentrating and alerting at one place as described in claim 5. Specifically, for example, a display device or a voice output device is arranged at a position that is easy to see from the driver of the vehicle in the vicinity of the parking space, or a place where the parking lot manager is stationed, and displays the location to be alarmed. It is possible to notify by voice.

  Alternatively, as described in claim 6, it is conceivable that alarm means are provided integrally with each trigger transmitter so that alarms can be individually notified for alarms targeting each trigger transmitter. Specifically, for example, when individual trigger transmitters are provided with indicator lights and audio output devices, and incorrect identification information is received as a response to a trigger signal whose source is a trigger transmitter arranged at a certain location It is conceivable to operate only the indicator lamp and the sound output device at the relevant location. By doing so, it becomes clear at a glance where illegal parking is going to be performed, and warning against illegal parking can be effectively performed.

  Next, the unauthorized parking warning system according to claim 7 has the following characteristics. As a response to the trigger signal transmitted from the trigger transmitter, the trigger transmitter transmits a response signal including reception intensity information indicating the reception intensity of the trigger signal in addition to the identification information. On the other hand, the alarm control means specifies the distance between the trigger transmitter and the in-vehicle transmitter based on the reception intensity information included in the received response signal. If it is determined that the identification information does not match the permission identification information, an alarm is notified to the alarm means if the distance specified from the received intensity information included in the same response signal as the identification information is within a predetermined alarm range. If the alarm is not within the predetermined alarm range, the alarm is not notified.

  According to the unauthorized parking warning system configured in this way, for example, for a response signal transmitted from outside the parking space, the warning range is set so as to cover only the parking space subject to the warning. Even if the identification information does not match, the alarm range covered by the trigger transmitter can be controlled, such as not to notify the alarm, and when installing multiple trigger transmitters, It is possible not to overlap. In addition, for example, it is possible to prevent false alarms for vehicles that should not be subject to warning, such as vehicles that have just passed near the parking space, or vehicles that are in a parking space adjacent to the target parking space. .

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

[1. Explanation of illegal parking warning system configuration]
Fig.1 (a) is a block diagram which shows schematic structure of the unauthorized parking warning system (centralized warning type) 1a which is 1st Embodiment of this invention.

  As shown in FIG. 1A, the unauthorized parking warning system (centralized warning type) 1a includes transmitters 10a to 10d attached to the vehicle 100, and trigger transmitters 20a installed in the vicinity of each parking space where the vehicle is parked. , 20b and storage sensors 30a, 30b, a control device 40, and an alarm device 50.

  The transmitters 10a to 10d function as transmitters of tire pressure measuring devices (for example, see Patent Document 1) mounted on the vehicle 100, and are attached to the wheels 200 of the vehicle 100 and attached to the wheels. The tire pressure is detected and data indicating the detection result is transmitted to a receiver (not shown) mounted on the vehicle 100. In addition, since it is not the essence of this invention about the structure of a tire pressure measuring apparatus, detailed description is abbreviate | omitted.

  Furthermore, the transmitters 10a to 10d have the following functions as a characteristic configuration of the present invention. First, a trigger signal by an LF (Low Frequency) radio wave is received and the reception intensity is measured. Then, as a response to the received trigger signal, a response signal including data indicating the measured reception intensity and identification information (ID) for identifying the own transmitter is transmitted to the outside by an RF (Radio Frequency) radio wave. . In the following description, when the individual transmitters 10a to 10d are not particularly distinguished, they are simply referred to as transmitters 10.

  The trigger transmitters 20a and 20b output a trigger signal (LF radio wave) having a predetermined electric field strength in accordance with a control signal transmitted from the control device 40. The trigger transmitters 20a and 20b are configured as, for example, a portable self-standing unit or a wall-hanging unit, and are appropriately arranged according to the shape of the parking space. As an arrangement place, the parking space vicinity, such as on the boundary line of a parking space, the wall side, etc. is mentioned. In the example shown in FIG. 1A, one is arranged at each end on the entrance side of the parking space for two vehicles. In the following description, when the individual trigger transmitters 20a and 20b are not particularly distinguished, they are simply referred to as the trigger transmitter 20.

  The warehousing sensors 30a and 30b are configured by, for example, infrared sensors, and detect entry of the vehicle 100 into the parking space and input the detection result to the control device 40. In the case shown in FIG. 1 (a), the warehousing sensors 30a and 30b are arranged one by one at the entrance end of each of the parking spaces for two vehicles. In the following description, the individual warehousing sensors 30a and 30b are simply referred to as the warehousing sensor 30 unless otherwise distinguished.

  The control device 40 is installed as a facility on the parking lot side, controls the transmission timing of the trigger signal from each trigger transmitter 20a, 20b, and each transmitter 10a to 10d as a response to the transmitted trigger signal. The response signal (RF radio wave) transmitted from is received. Then, it is determined whether or not the ID included in the response signal matches the permission ID registered in advance. If the ID does not match, an alarm is notified via the alarm device 50.

  The alarm device 50 is illegally parked, for example, in the vicinity of the parking space at a position visible to the driver of the vehicle 100 who is about to park, or in a location where a parking lot manager is stationed. An alarm to the effect of warning is issued while clearly indicating the location to be alarmed. Here, the location that is the target of the alarm is the response when a response signal including an illegal ID that does not conform to the permission ID is received from the transmitter 10 as a response to the trigger signal transmitted from each trigger transmitter 20. That is, the trigger transmitter 20 that is the source of the trigger signal is disposed. The alarm device 50 is configured so that alarms targeting each of these locations can be concentrated and reported at one location. As a specific configuration of the alarm device 50, for example, a display device that displays an alarm and a location that is the target of the alarm, a warning lamp, an audio output device that outputs the alarm and the location that is the target of the alarm by voice, Or what was comprised as a unit which combined them is mentioned.

Next, FIG.1 (b) is a block diagram which shows schematic structure of the unauthorized parking warning system (individual warning type) 1b which is 2nd Embodiment of this invention.
The unauthorized parking alarm system (individual alarm type) 1b of the second embodiment is an individual instead of the alarm device 50 and the trigger transmitters 20a and 20b in the unauthorized parking alarm system (centralized alarm type) 1a of the first embodiment. The difference is that trigger transmitters (with alarm devices) 60a and 60b, in which an alarm device is integrated with the trigger transmitter, are installed in the vicinity of the boundary line of the parking space. Since the transmitters 10a to 10d, the warehousing sensors 30a and 30b, and the control device 40 are the same as or equivalent to the configuration in the first embodiment, detailed description is omitted.

  In addition to the function of outputting a trigger signal (LF radio wave) having a predetermined electric field strength according to a control signal transmitted from the control device 40, the trigger transmitters 60a and 60b provide an alarm that warns that the vehicle is illegally parked. It has a function to notify. And the control apparatus 40 can specify the location used as the object of this warning by alert | reporting a warning separately in the location used as the object of the warning with respect to unauthorized parking among each trigger transmitter 60a, 60b. In the following description, when the individual trigger transmitters 60a and 60b are not particularly distinguished, they are simply expressed as the trigger transmitter 60.

  2A is a block diagram showing a schematic configuration of the transmitter 10 (common to the first and second embodiments), and FIG. 2B is a schematic configuration of the trigger transmitter 20 in the first embodiment. (C) is a block diagram showing a schematic configuration of a trigger transmitter (with an alarm device) 60 in the second embodiment, and (d) is a block diagram showing a schematic configuration of the control device 40. It is a figure (common to 1st, 2 embodiment).

As shown in FIG. 2A, the transmitter 10 includes an LF receiver 11, an RF transmitter 12, a controller 13, a pneumatic sensor 14, and antennas 15 and 16.
The LF receiving unit 11 receives a trigger signal (LF radio wave) from the trigger transmitters 20 and 60 via the antenna 15 and sends the received trigger signal to the control unit 13. The RF transmission unit 12 is for transmitting the response signal transmitted from the control unit 13 to the external control device 40 via the antenna 16 by RF radio waves. When the transmitter 10 functions as a transmitter of a tire pressure measuring device mounted on the vehicle 100, the LF receiver 11 and the RF transmitter 12 are not shown in FIG. Various signals are sent and received between them.

  The control unit 13 is configured around a known microcomputer including a CPU, a ROM, a RAM, an I / O, a bus line connecting these, and the like. The illegal parking according to the embodiment is performed according to a program stored in the ROM. Predetermined processing relating to the alarm systems 1a and 1b and the tire pressure measuring device is executed.

  The control part 13 performs the following processes as a process which concerns on the unauthorized parking warning system 1a, 1b of embodiment. First, the reception intensity of the trigger signal received via the LF receiver 11 is measured. Then, a response signal including data indicating the measured reception intensity and its own identification information (ID) stored in the control unit 13 is generated, and the generated response signal is transmitted via the RF transmission unit 12. It transmits to the external control apparatus 40.

  The air pressure sensor 14 includes, for example, a diaphragm type pressure sensor, and outputs a detection signal corresponding to the tire air pressure to the control unit 13. The detection result by the air pressure sensor 14 is transmitted by the control unit 13 to the receiver of the tire pressure measuring device through the RF transmission unit 12.

The trigger transmitter 20 according to the first embodiment includes an LF transmitter 21 and an antenna 22 as shown in FIG.
The LF transmitter 21 is communicably connected to the control device 40, and transmits a trigger signal with a predetermined electric field intensity via the antenna 22 in accordance with a control signal transmitted from the control device 40 at a predetermined timing.

The trigger transmitter 60 according to the second embodiment includes an LF transmitter 61, an antenna 62, and an alarm output unit 63, as shown in FIG.
Since the LF transmission unit 61 and the antenna 62 are the same as the LF transmission unit 21 and the antenna 22 in the trigger transmitter 20 of the first embodiment, description thereof is omitted. The alarm output unit 63 is communicably connected to the control device 40 and notifies an alarm according to a control signal from the control device 40. As a specific configuration of the alarm output unit 63, for example, a display device that displays an alarm to warn of unauthorized parking, a warning lamp, an audio output device that outputs the alarm by voice, or a combination thereof Can be mentioned.

As illustrated in FIG. 2D, the control device 40 includes an RF receiving unit 41, a control unit 42, and an antenna 43.
The RF receiver 41 receives response signals (RF radio waves) from the trigger transmitters 20 and 60 via the antenna 43 and sends the received response signals to the controller 42.

  The control unit 42 is composed mainly of a well-known microcomputer comprising a CPU, ROM, RAM, I / O and a bus line connecting them, and executes predetermined processing according to a program stored in the ROM. To do. In the first embodiment, the trigger transmitters 20 a and 20 b, the warehousing sensors 30 and 30 b, and the alarm device 50 are connected to the control unit 42. On the other hand, in 2nd Embodiment, each trigger transmitter (with an alarm device) 60a, 60b and warehousing sensors 30a, 30b are connected. The control unit 42 includes a connection interface capable of simultaneously connecting a plurality of trigger transmitters 20 and 60, and the number of trigger transmitters 20 and 60 to be connected is set to an arbitrary number between 1 and a predetermined maximum number. It is configured to be able to.

  The control unit 42 outputs a control signal for causing each trigger transmitter 20, 60 to output a trigger signal, and then receives a response signal transmitted from each transmitter 10 via the RF receiver 41. To do. Then, it is determined whether the ID of each transmitter 10 included in each response signal matches the permission ID stored in advance in the control unit 42. Further, the distance between the trigger transmitters 20 and 60 that are the transmission source of the trigger signal related to the response signal and the transmitter 10 that is the transmission source of the response signal is specified based on the data indicating the reception strength included in the response signal. It has a function. Then, it is determined that the ID of the transmitter 10 included in a certain response signal does not match the permission ID, and the trigger transmitters 20 and 60 that are the transmission source of the trigger signal related to the response signal, and the transmission source of the response signal If the distance between the transmitter 10 and the transmitter 10 is within a predetermined alarm range, the trigger transmitters 20 and 60 are targeted for alarm. The corresponding trigger transmitter 60 is notified of an alarm. Hereinafter, the series of processes performed by the control unit 42 is referred to as “alarm process”. In addition, the control unit 42 executes “registration mode processing” for registering the permission ID. Each process of the “alarm process” and “registration mode process” by the control unit 42 will be described in detail later.

Next, FIG. 3 is a figure which shows the variation of the arrangement method to the parking space of the trigger transmitters 20 and 60. FIG.
In the unauthorized parking warning systems 1a and 1b of the embodiments, the arrangement locations and the number of arrangements of the trigger transmitters 20 and 60 can be arbitrarily arranged according to the shape of the parking space. For example, as shown in FIG. 3A, for a parking space where two vehicles can be parked in a row, two trigger transmitters 20 and 60 are provided on the entrance side of each parking space, for a total of two. It can also be set as the structure which can be alerted to the illegal parking with respect to the parking space for two vehicles, respectively. In addition, as shown in FIG. 3B, if the parking space is capable of parking four vehicles, one trigger transmitter 20, 60 is arranged for each parking space, and a total of four are arranged. In addition, it is possible to adopt a configuration capable of guarding illegal parking with respect to parking spaces for four vehicles.

  The configuration of the unauthorized parking alarm systems 1a and 1b of each embodiment has been described above. The correspondence between the configuration of the unauthorized parking alarm systems 1a and 1b in the embodiment and the configuration described in the claims is as follows. is there. The transmitter 10 in the embodiment corresponds to the in-vehicle transmitter in the claims. Among these, the LF reception unit 11 corresponds to a trigger reception unit, the RF transmission unit 12 and the control unit 13 correspond to a transmission unit, and the control unit 13 corresponds to a reception intensity acquisition unit. Moreover, the warehousing sensor 30 is equivalent to a detection means. Further, the RF receiver 41 in the control device 40 corresponds to a response receiver, and the controller 42 corresponds to an alarm controller and a trigger controller. The alarm output unit 63 in the alarm device 50 or the trigger transmitter 60 corresponds to an alarm means.

[2. Description of processing by control device 40]
Next, each of the above-described “registration mode processing” and “alarm processing” executed by the control unit 42 of the control device 40 will be described with reference to FIGS.

[2-1. Explanation of registration mode processing]
FIG. 4 is a flowchart showing the procedure of “registration mode processing” executed by the control unit 42 of the control device 40. Since the procedure shown in the flowchart of FIG. 4 is common to the first embodiment and the second embodiment, both embodiments will be described collectively below. Explain each time.

  In the registration of the ID in the registration mode, the vehicle to register the ID of the transmitter 10 for the parking space to be used enters the communication area with the trigger transmitters 20 and 60 installed in the parking space. By performing an operation input for instructing the control device 40 to start the registration mode, the normal mode for monitoring unauthorized parking is shifted to the registration mode.

  First, the control unit 42 detects a vehicle entering the parking space by the warehousing sensor 30 (S100). Then, after the entry of the vehicle is detected by the warehousing sensor 30, an operation input from the user for starting the registration mode is received (S110). Specifically, for example, a switch (not shown) for inputting an instruction for starting the registration mode is provided near the entrance of the parking space, and the registration mode is performed by performing a predetermined operation on this switch. It is conceivable to make a configuration that shifts to. In order to prevent unauthorized registration of IDs by persons who are not authorized users, operations for shifting to the registration mode include operations that can be known only to authorized users, and operations that are performed only by authorized users with keys. It is desirable to adopt it, and operations such as operation procedures and keys being given by prior application from authorized users can be considered.

  When an operation input for shifting to the registration mode is accepted in S110, a control signal for transmitting a trigger signal with a predetermined electric field strength is then transmitted to each trigger transmitter 20, 60 (S120). In response to the control signal, a response signal is received from each transmitter 10 for the trigger signal transmitted from each trigger transmitter 20, 60 (S130).

  Then, it is determined whether or not the ID included in the response signal from each transmitter 10 is normal that conforms to a predetermined standard (S140). If it is determined that all the received IDs are normal (S140: YES), the received ID is registered in the memory as a permission ID (S150). If it is the first embodiment, a message indicating that the ID registration is completed is displayed on the alarm device 50, and if it is the second embodiment, the alarm output unit 63 of the trigger transmitter 60 is displayed (S160).

  On the other hand, when it is determined in S140 that any of the received IDs is not normal (S140: NO), it is determined whether or not a predetermined time has elapsed (timed out) from the time when the trigger signal is first transmitted (S170). . If it is determined that the time-out has not occurred (S170: NO), the process returns to S120, and the trigger signal is transmitted again.

  On the other hand, if it is determined in S170 that a time-out has occurred (S170: YES), a message indicating an error is sent to the alarm device 50 in the first embodiment, and to the alarm output unit 63 of the trigger transmitter 60 in the second embodiment. The registration mode is canceled (S190).

[2-2. Explanation of alarm processing]
FIG. 5 is a flowchart illustrating a procedure of “alarm processing” executed by the control unit 42 of the control device 40. Since the procedure shown in the flowchart of FIG. 5 is common to the first embodiment and the second embodiment, both embodiments will be described collectively below. Explain each time.

  First, the controller 42 detects a vehicle entering the parking space by the warehousing sensor 30 (S200). And based on the detection signal from the warehousing sensor 30, it is determined whether the vehicle has been detected (S210). Here, when it determines with the receipt sensor 30 not detecting the vehicle (S210: NO), it returns to the process of S200.

  On the other hand, when it is determined that the warehousing sensor 30 has detected the vehicle (S210: YES), a control signal for causing the trigger transmitters 20 and 60 to transmit a trigger signal at a predetermined electric field strength is transmitted at a predetermined timing. The signals are sequentially transmitted (S220), and response signals from the transmitters 10 to the trigger signals transmitted from the trigger transmitters 20 and 60 according to the control signals are received for a predetermined time (S230).

  Here, the timing at which trigger signals are transmitted from the individual trigger transmitters 20 and 60 will be described with reference to FIG. Here, it is assumed that the number of trigger transmitters 20 and 60 connected to the control device 40 is three, and these are referred to as trigger transmitters A, B, and C, respectively.

  As illustrated in FIG. 6, the control unit 42 first causes the trigger transmitter A to transmit a trigger signal in the order determined by the program. That is, a control signal is transmitted to the trigger transmitter A. Then, after a predetermined interval necessary for receiving a response signal from each transmitter 10 with respect to the trigger signal transmitted from the trigger transmitter A, the trigger transmitter B is caused to transmit the trigger signal. That is, a control signal is transmitted to the trigger transmitter B. Then, after a predetermined interval necessary for receiving a response signal from each transmitter 10 with respect to the trigger signal transmitted from the trigger transmitter B, the trigger transmitter C is caused to transmit the trigger signal. That is, a control signal is transmitted to the trigger transmitter C.

  Thus, by sequentially transmitting the trigger signals from the trigger transmitters 20 and 60 in a predetermined order and interval, the correspondence between the trigger signal transmission order and the response signal reception order becomes clear. Thereby, the control unit 42 associates the received response signal with respect to the trigger signal transmitted from which trigger transmitter 20 or 60.

  Returning to the description of FIG. After receiving a response signal from each transmitter 10 for a predetermined time in S230, it is determined whether or not the response signal has been received (S240). Here, when it is determined that the response signal has been received (S240: YES), it is determined whether or not the IDs included in all the received response signals match the permission ID registered in advance (S250). If it is determined that all IDs match the permission ID (S250: YES), the “alarm processing” is terminated.

  On the other hand, if it is determined in S250 that any ID does not match the permission ID (S250: NO), the response signal is handled based on the data indicating the reception strength included in the same response signal as the non-matching ID. The distance between the trigger transmitters 20 and 60 that are the transmission source of the trigger signal and the transmitter 10 that is the transmission source of the response signal is specified (S270).

  Here, it is known that the electric field strength of the LF radio wave used for transmitting the trigger signal attenuates according to the distance. By using the characteristics of the LF radio wave, the control unit 42 determines the attenuation degree of the LF radio wave from the received intensity data transmitted from the transmitter 10, and the trigger transmitters 20, 60 and the transmitter 10 Estimate distance.

  Next, it is determined whether or not the distance specified in S270 is within a predetermined alert range (S280). Here, the predetermined warning range is registered in advance in the memory or the like of the control unit 42, and the monitoring target parking by each trigger transmitter 20, 60 is based on the position of the trigger transmitter 20, 60. It is desirable to set the distance so that the warning ranges by the trigger transmitters 20 and 60 do not overlap while covering the space.

  If it is determined in S280 that it is not within the alert range (S280: NO), the process proceeds to S310. On the other hand, when it determines with it being in the warning range (S280: YES), the applicable trigger transmitter 20 and 60 is specified as a warning object (S290).

  And in the case of the illegal parking warning system 1a of the first embodiment, the alarm target 50, or in the case of the illegal parking warning system 1b of the second embodiment, the target of the alarm among the plurality of trigger transmitters 60. An alarm is output only to the alarm output unit 63 of the trigger transmitter 60 (S300).

  On the other hand, the alarm device 50 in the unauthorized parking alarm system 1a of the first embodiment displays on the screen an alarm indicating that an illegal parking warning has been issued, and information indicating a location that is an object of the alarm, Output by voice. Further, a warning lamp may be blinked or an alarm sound may be output. On the other hand, the alarm output unit 63 in the unauthorized parking alarm system 1b of the second embodiment displays an alarm to warn against unauthorized parking on the screen or outputs it by voice. Further, similarly to the alarm device 50 of the first embodiment, a warning lamp may blink or an alarm sound may be output.

  On the other hand, when it is determined in S240 that the response signal from the transmitter 10 has not been received (S240: NO), it is determined whether or not a predetermined time has elapsed (timeout) from the time when the trigger signal is transmitted (S260). ). Here, when it is determined that the time-out has not occurred (S260: NO), the process returns to the process of S230, and a response signal from the transmitter 10 is received again.

  On the other hand, if it is determined in S260 that the time-out has occurred (S260: YES), if it is the first embodiment, it responds to the alarm device 50, and if it is the second embodiment, it responds to the alarm output unit 63 of the corresponding trigger transmitter 60. An alarm is issued to warn that an unauthorized vehicle that has not transmitted a signal (not equipped with the transmitter 10) has entered (S300).

  Next, in S310, based on the detection signal from the warehousing sensor 30, it is determined whether or not the warehousing state of the vehicle is continued. Here, when it determines with the warehousing state of a vehicle continuing (S310: YES), it returns to the process of S220. On the other hand, when the vehicle is no longer detected by the warehousing sensor 30 (S310: NO), the “alarm processing” is terminated.

[3. effect]
According to the unauthorized parking warning systems 1a and 1b of the above embodiment, the following effects can be obtained.

  (1) The parking lot user can use the unauthorized parking warning system only by providing the vehicle 100 with the transmitter 10 that transmits a response signal to the trigger signal from the trigger transmitters 20 and 60. Therefore, an unauthorized parking warning system can be realized in a mode that can be easily equipped and used as a retrofit product.

  (2) By using the transmitter 10 as a transmitter of a tire pressure measuring device provided with a pressure sensor 14 for measuring tire pressure, an unauthorized parking warning system as an additional function of the tire pressure detecting device is realized, Further spread is expected as a product with higher added value.

  (3) By appropriately arranging the trigger transmitters 20 and 60 in the vicinity of the parking space such as on the boundary line of the parking space or near the wall, it is possible to monitor illegal parking at a necessary location according to the shape of the parking space. . In addition, the trigger transmitters 20 and 60 are configured as portable self-supporting units or wall-mounted units, and can be arranged in any number in any location according to the shape of the parking range. The facility can also provide an illegal parking warning system that can be easily installed and used as a retrofit product.

  (4) A vehicle registered as a legitimate parked vehicle by a registration mode in which a permission ID can be automatically registered using communication between the trigger transmitters 20 and 40, the transmitter 10 and the control device 40. Can be used smoothly.

  (5) The trigger transmitters 20 and 60 are caused to sequentially transmit trigger signals in a predetermined order. From the correspondence between the transmission order and the reception order of the response signals with respect to the trigger signals, which trigger transmitters 20 and 60 60 can be identified. Therefore, among the plurality of trigger transmitters 20 and 60 installed, only the trigger transmitters 20 and 60 that are the targets of the alarm can be individually notified of an alarm, and an effective warning for illegal parking can be performed.

  (6) By determining whether or not to issue an alarm according to the degree of approach between the trigger transmitters 20 and 60 and the transmitter 10, the alarm range covered by the trigger transmitters 20 and 60 can be controlled. When the trigger transmitters 20 and 60 are installed, it is possible to prevent the alarm ranges from overlapping each other. In addition, for example, it is possible to prevent false alarms for vehicles that should not be subject to warning, such as vehicles that have just passed near the parking space, or vehicles that are in a parking space adjacent to the target parking space. .

[4. Modified example]
As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment at all, It is possible to implement in various aspects.

  For example, in the unauthorized parking warning systems 1a and 1b of the above-described embodiments, the transmitter 10 attached to the vehicle 100 is also used as the transmitter of the tire pressure measuring device. On the other hand, the structure which makes the transmitter 10 a transmitter only for an unauthorized parking warning system may be sufficient. In this case, the air pressure sensor 14 can be omitted from the configuration of the transmitter 10 (see FIG. 2A) in the unauthorized parking warning systems 1a and 1b of the above embodiments. Moreover, it is not always necessary to attach each transmitter to a wheel, and it can be appropriately attached to various parts of a vehicle body. As specific attachment locations, it is desirable to attach along the outer edge of the vehicle body, such as attaching to the front end portion and the rear end portion of the vehicle body, or attaching to the left and right ends of the front end portion and the rear end portion, respectively.

(A) is a block diagram which shows schematic structure of the unauthorized parking warning system 1a of 1st Embodiment, (b) is a block diagram which shows schematic structure of the unauthorized parking warning system 1b of 2nd Embodiment. 2 is a block diagram showing a schematic configuration of a transmitter 10, trigger transmitters 20, 60, and a control device 40. FIG. It is a figure which shows the variation of the arrangement method to the parking space of the trigger transmitters 20 and 60. FIG. It is a flowchart which shows the procedure of "registration mode process". It is a flowchart which shows the procedure of "alarm processing." It is a timing chart which shows typically the transmission timing of the trigger signal from trigger transmitters 20 and 60, and the reception order of the response signal from each transmitter 10 to each trigger signal.

Explanation of symbols

1a ... Unauthorized parking warning system (centralized alarm type), 1b ... Unauthorized parking warning system (individual alarm type)
DESCRIPTION OF SYMBOLS 10 ... Transmitter, 11 ... LF reception part, 12 ... RF transmission part, 13 ... Control part, 14 ... Air pressure sensor, 15, 16 ... Antenna 20 ... Trigger transmitter, 21 ... LF transmission part, 22 ... Antenna, 60 ... Trigger transmitter (with alarm), 61 ... LF transmitter, 62 ... antenna, 63 ... alarm output unit 30a, 30b ... entry sensor 40 ... control device, 41 ... RF receiver, 42 ... control unit, 43 ... antenna 50 ... alarm

Claims (9)

A trigger transmitter that is installed at one or a plurality of locations in the vicinity of the parking space so as to include the parking space within its communication range, and that transmits a trigger signal;
Trigger receiving means attached to each of a plurality of locations of the vehicle for receiving a trigger signal transmitted from the trigger transmitter, and identification information for identifying itself as a response to the trigger signal received by the trigger receiving means An in-vehicle transmitter provided with a transmission means for transmitting a response signal to the outside;
An alarm means for informing an alarm for warning that the vehicle is improperly parked;
Response receiving means for receiving a response signal transmitted from the in-vehicle transmitter;
It is determined whether or not the identification information included in the response signal received by the response receiving means matches pre-registered permission identification information. If it is determined that the identification information does not match, an alarm is notified to the warning means. And an illegal parking warning system characterized by comprising an alarm control means. In the unauthorized parking warning system according to claim 1,
It further comprises detection means for detecting entry of the vehicle into the parking space,
The alarm control means determines that the identification information does not match the permission identification information in a state where the detection means detects the vehicle entry into the parking space, or the vehicle entry is detected. If the response signal for the trigger signal transmitted from the trigger transmitter is not received by the response receiving means in the state, the warning means is notified to the warning means. In the unauthorized parking warning system according to claim 1 or claim 2,
The registration mode for registering the permission identification information is configured to be selectively executable. When the registration mode is executed, first, the trigger signal is transmitted from the trigger transmitter, and the trigger signal is transmitted. An unauthorized parking warning system, wherein identification information included in the response signal transmitted from the in-vehicle transmitter as a response is stored as the permission identification information. In the unauthorized parking warning system according to any one of claims 1 to 3,
The alarm means is configured to be able to notify an alarm in a mode that clearly indicates the trigger transmitter to be an alarm target,
The alarm control means further includes trigger control means for causing each trigger transmitter to sequentially transmit a trigger signal in a predetermined order when a plurality of the trigger transmitters are installed, and the identification information is included in the permission identification information. If it is determined that they do not match, it corresponds from the correspondence between each trigger transmitter and each response signal based on the order of transmission of the trigger signal by the trigger control means and the order of reception of the response signal from each in-vehicle transmitter. An unauthorized parking warning system characterized by identifying a location of the trigger transmitter and causing the warning means to notify an alarm targeting the trigger transmitter at the location. In the unauthorized parking warning system according to claim 4,
The unauthorized parking alarm system, wherein the alarm means is configured to be able to report on alarms targeting each of the trigger transmitters in a centralized manner. In the unauthorized parking warning system according to claim 4,
The alarm unit is provided integrally with each of the trigger transmitters, and is configured to be able to individually notify an alarm for an alarm for each of the trigger transmitters. Alarm system. In the unauthorized parking warning system according to any one of claims 1 to 6,
The in-vehicle transmitter includes a reception strength acquisition unit that acquires a reception strength of the trigger signal received by the trigger reception unit,
As a response to the received trigger signal, the transmission means included in the in-vehicle transmitter includes a response signal including reception intensity information indicating the reception intensity of the trigger signal acquired by the reception intensity acquisition means in addition to the identification information. Send
The alarm control unit specifies a distance between the trigger transmitter and the in-vehicle transmitter based on reception intensity information included in the response signal received by the response reception unit, and the identification information is included in the permission identification information. When it is determined that they do not match, if the distance specified from the reception intensity information included in the response signal that is the same as the identification information is within a predetermined alarm range, the alarm means is notified of the alarm, and the predetermined alarm An unauthorized parking warning system characterized by not issuing an alarm unless it is within range. In the unauthorized parking warning system according to any one of claims 1 to 7,
The trigger transmitter is constituted by a unit that can be arranged in an arbitrary number at an arbitrary location according to the shape of the parking range. In the unauthorized parking warning system according to any one of claims 1 to 8,
The vehicle-mounted transmitter further includes an air pressure measuring unit that is installed on each of the plurality of tire-equipped wheels and measures the air pressure of the tire, and a pneumatic signal indicating the tire air pressure measured by the air pressure measuring unit, An unauthorized parking warning system, which is also used as a transmitter of a tire pressure measuring device that transmits to a receiver constituting the tire pressure measuring device via a transmitting means.

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