JP2005105608A - Leaving vehicle blocking device of parking vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leaving vehicle blocking device of a parking vehicle capable of surely and early detecting an illegal leaving based on rotational action of a chain lock plate. <P>SOLUTION: The leaving vehicle blocking device of the parking vehicle is so constituted that a position sensor 20 capable of detecting variations in a position in a standing state of the chain lock plate 1 of the leaving vehicle blocking device 3 is provided and that a decision signal of the illegal leaving can be created when a predetermined standing position S1 from a standing chain lock position abutted on the bottom of a vehicle 6 or a position moving in excess of the position S1 is detected by the position sensor 20 in the case parking charges are not settled. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a parked vehicle exit prevention apparatus used in a parking lot or the like, and more particularly to a technique for preventing unauthorized exit.

  In a parking lot that manages a parked vehicle for each individual parking space, the parked vehicle is locked as shown in FIGS. 15 and 16 to prevent the user from leaving without paying the parking fee. An exit prevention device 3 having a lock plate 1 and a drive unit 2 for driving the lock plate 1 is provided for each parking space 4. In the figure, reference numeral 5 denotes, for example, a terminal provided in each parking space 4, and each terminal is connected to a centralized charge settlement machine (not shown).

  Each of these exit prevention devices 3 is configured to prevent the vehicle from exiting by positioning the locking plate 1 in the upright locking position when the parking fee is not settled. The exit prevention device 3 of FIG. 16 is a tire lock type in which the locking plate 1 is erected between the front and rear tires of the vehicle parked in the parking space 4, and the exit prevention device 3 in FIG. It is a vehicle body lock type that raises the plate 1.

  By the way, since there are users who try to get out of the lock plate illegally, some of the conventional exit prevention devices have a function of detecting such unauthorized exit (see, for example, Patent Document 1). ).

The conventional withdrawal prevention device described in Patent Document 1 is a tire lock type shown in FIG. 15, and includes two main locking plates arranged at the center of the vehicle body and auxiliary locking plates arranged between the front and rear tires. This is a structure in which the sub-lock plate rises and falls in conjunction with the main lock plate driven by the drive unit, and a pressure sensor for detecting unauthorized exit is placed below the sub-lock plate. It is. And when the parked vehicle is illegally with the main and sub-locking plates in the upright locked position, the unlocking position where the sub-locking plates without locking force have fallen due to the force from the tires. In addition, the pressure sensor detects the vehicle weight when the tire climbs over the sub-locking plate, thereby detecting unauthorized exit.
Japanese Patent Laid-Open No. 11-13301

  However, in the case of an escape prevention device with a single locking plate structure, the locking plate is locked at the upright locking position, so that the lying position where the locking plate unlocks when the vehicle gets over the locking plate. May not rotate. Further, in the case of the vehicle body lock-type exit prevention device shown in FIG. 16, when the vehicle 6 is illegally exited, as shown in FIG. 17, the locking plate 1 in the upright locking position indicated by the chain line in the figure. However, it rotates only to the height position of the bottom of the vehicle 6, that is, the position indicated by the solid line in the figure, and does not rotate to the lying down position.

  For this reason, in the case of the tire lock type withdrawal prevention device shown in FIG. 15 having a single locking plate structure or the vehicle body locking type withdrawal prevention device shown in FIG. 16, the locking plate described in Patent Document 1 is In the conventional configuration in which the unauthorized exit cannot be detected unless it is rotated to the lying position, the detection of the unauthorized exit is insufficient.

  The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a parked vehicle exit prevention device that can reliably detect unauthorized exit without the locking plate rotating to the lying down position. To do.

  For this reason, the invention of claim 1 includes a locking plate that locks the parked vehicle, and a drive unit that selectively rotates to the locking position where the locking plate is erected and the unlocked position where the locking plate is laid down. A parking vehicle exit prevention device configured to drive the locking plate from the unlocked position to the locked position and prevent the parked vehicle from exiting when the vehicle enters, The lock plate change detecting means for detecting the change in the standing state of the lock plate is provided, and the unauthorized exit of the parked vehicle is detected based on the detection output of the lock plate change detecting means.

  In such a configuration, when the parked vehicle tries to get over the locked plate that is driven to the standing locked position and locks the parked vehicle because of unauthorized exit, the vehicle weight acts on the locked plate and the direction of lying down To turn. The lock plate change detection means detects the rotation of the lock plate, and detects the unauthorized exit based on the detection output, thereby preventing the unauthorized exit even if the lock plate does not rotate to the unlocked position. Can be detected.

  The lock plate change detecting means may be configured to detect a change in the standing state of the lock plate based on the rotational displacement of the lock plate, as in claim 2. In this case, as in claim 3, the lock plate change detecting means may be configured to detect a predetermined rotational position of the lock plate, and as in claim 7, the lock plate change detecting means. May be configured to detect a predetermined rotation amount of the locking plate.

  In the case of claim 3, specifically, as in claim 4, the locking plate change detecting means includes a detection plate having a characteristic portion at a peripheral portion, and a sensor portion for detecting the characteristic portion of the detection plate; The detection plate is fixed to one of the rotation shaft of the locking plate and the fixed portion around the rotation shaft so that the characteristic portion detection output is generated from the sensor portion at the predetermined rotation position. The sensor unit may be fixed to the other side. Further, as in claim 5, the lock plate change detecting means comprises an optical sensor comprising a light emitting element and a light receiving element facing each other across the lock plate, and the locking plate change detecting means The light emitting element and the light receiving element may be arranged so that a light output from the light emitting element to the light receiving element is blocked by a locking plate to generate a sensor output.

  Further, if a plurality of the predetermined rotation positions are set as in the sixth aspect, it is possible to set appropriate predetermined rotation positions according to the vehicle height.

  In the case of claim 7, specifically, as in claim 8, the locking plate change detecting means includes a detection plate having a plurality of characteristic portions in the circumferential direction at a peripheral portion, and a characteristic portion of the detection plate passing therethrough. A sensor unit that generates a signal each time, the detection plate is provided on one of a shaft part that rotates the locking plate and a fixed part around the shaft part, and the sensor part is provided on the other side, The predetermined amount of rotation of the locking plate may be detected based on the number of signals of the sensor unit. In this case, as in the ninth aspect, the detection plate is provided with a first feature group and a second feature group in the radial direction, the positions of the feature portions being shifted in the circumferential direction so that overlapping portions exist. The sensor unit may generate a two-phase signal having a phase shift from each other.

  In the invention of claim 10, the parking fee is not yet settled and the lock plate change detecting means is provided with a determination means for determining that the vehicle is illegally exited when detecting the change of the lock plate in the standing state.

  Further, as in claim 11, when the lock plate change detecting means has the configuration according to any one of claims 3 to 6, the determination means is when the lock plate is in the lock position. The output state of the lock plate change detecting means is stored, and the parking fee is not settled, and it is determined that the exit is illegal when the output state of the lock plate change detecting means is different from the stored output state. The configuration.

  Further, as in claim 12, when the locking plate change detecting means has the configuration according to any one of claims 7 to 9, the judging means has a parking fee not yet settled and the chain When a predetermined number of signals corresponding to the predetermined amount of rotation are input from the lock plate change detecting means, it is determined that the user has left illegally.

  As described above, according to the withdrawal prevention device of the present invention, since it is configured to detect unauthorized withdrawal by detecting a change during the standing state of the locking plate, it is rotated to the unlocked position where the locking plate has fallen. Without it, unauthorized exit can be detected. Therefore, even with a one-piece tire lock type withdrawal prevention device or a vehicle body lock type withdrawal prevention device in which the locking plate does not fall down when illegally leaving, unauthorized exit can be detected reliably and early.

  According to the invention of claim 6, a plurality of predetermined rotational positions for detecting unauthorized exit can be set in consideration of the vehicle heights of various parked vehicles, so that the vehicle height and vehicle weight of the parked vehicles are affected. Therefore, any kind of parked vehicle can be reliably and quickly detected for unauthorized exit, and the detection accuracy of unauthorized exit can be improved.

  According to the eighth aspect of the present invention, a single locking plate change detecting means having the same configuration is used to securely and quickly leave any type of parked vehicle without being affected by the height or weight of the parked vehicle. Can be detected, the detection accuracy of unauthorized exit can be improved, and the configuration of the exit prevention device can be simplified.

  According to invention of Claim 9, since the rotation direction of a locking plate can be discriminate | determined, the more exact movement of a locking plate can be grasped | ascertained and the detection accuracy of unauthorized exit can be improved further.

  According to the inventions of claims 10 to 12, since illegal exit can be detected in relation to the payment state of the parking fee, the management function of the parking management system can be improved, and further, the reliability of the parking management system can be improved. .

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, taking a tire lock type exit prevention device as an example.

  FIG. 1 is a diagram showing a main part of a first embodiment of an exit prevention apparatus according to the present invention. In each embodiment described below, the same elements as those in the tire lock type withdrawal prevention device 3 shown in FIG.

  In FIG. 1, the exit prevention device 3 of the present embodiment is provided with a locking plate 1 and a drive unit 2 arranged in the same manner as in FIG. And in this embodiment, the rotation axis | shaft by the side of the drive part 2 connected with the rotation axis | shaft 11 by the side of the locking plate 1 via the connection mechanism 12 provided with two lever 12A, 12B and one link 12C. Around position 13, a position sensor 20 is provided as a locking plate change detecting means for detecting unauthorized exit for detecting a change in the standing state of the locking plate 1. The link mechanism 12 moves in the direction of the arrow B in the direction of the arrow A in the figure when the rotary shaft 13 rotates in the direction of the arrow A in the figure from the upright locked position in FIG. The drive part 2 side and the lock plate 1 side are connected so that 11 becomes the unlocking position in which the lock plate 1 has fallen in conjunction with the rotation shaft 13.

  The position sensor 20 is configured to detect a rotation position as a rotation displacement of the rotation shaft 13 and detect a predetermined rotation position when the locking plate 1 is in an upright state, as shown in FIGS. 1 and 2. Further, the detection plate 21 is fixed to the rotating shaft 13 and the sensor portion 22 is fixed to the frame 14 which is a fixing portion around the rotating shaft 13. The sensor unit 22 may be attached to the rotating shaft 13 side, and the detection plate 21 may be fixed to the frame 14 side. The detection plate 21 has a ring shape and has, for example, a protruding portion 21a as a characteristic portion at the peripheral portion. FIG. 2 shows a view of the sensor unit 22 formed of, for example, an optical sensor provided with a light emitting element and a light receiving element facing each other with a space therebetween, and viewed from the locking plate 1 side of FIG. As shown by the chain line, when the projection 21a crosses between the light emitting element and the light receiving element, the light beam projected from the light emitting element toward the light receiving element is blocked, and the optical sensor is turned off, for example. The OFF signal becomes the feature detection output. Accordingly, the detection plate 21 and the sensor unit 22 are placed in such a positional relationship that the detection plate 21 crosses the light-emitting element and the light-receiving element of the sensor unit 22 when the locking plate 1 reaches the predetermined rotation position in the standing state. Fix it. The feature part is not limited to the protrusion part, and may be a notch part or a slit. In the case of the notch part or slit, the output is turned on when crossing the optical sensor of the sensor part 22, and this ON signal is the feature part. Detection output.

  The sensor unit 22 is not limited to an optical sensor, and may be a magnetic sensor that detects the proximity of the protruding portion 21a using, for example, a metal detection plate 21, and is switched by contact of the protruding portion 21a, for example. A micro switch may be used. Further, the position sensor 20 may be attached to the rotation shaft 11 side, and may be any part as long as it is a part that rotates in conjunction with the locking plate 1. Further, the characteristic portion is not limited to the above-described protrusion, notch, slit, or the like, and may be any configuration that allows the sensor portion to be detected separately from other peripheral portions.

  FIG. 3 shows a configuration example of a terminal that controls the exit prevention apparatus 3 of the present embodiment. The present embodiment shows an example in which a central fee settlement machine capable of information communication with the terminal side is provided, and the parking fee is calculated on the central fee settlement machine side by exchanging information with the terminal side.

  In FIG. 3, the terminal 30 of the present embodiment is provided at the corner of the parking space 4 as with the terminal 5 of FIG. 15, and the sensor signal of the vehicle detection sensor 31 that detects the vehicle that has entered the parking space 4. The sensor signal of the position sensor 20 provided in the exit prevention device 3 and the settlement signal from the centralized fee settlement machine 32 are input to the sensor signal of the vehicle detection sensor 31 and the settlement signal from the centralized fee settlement machine 32. Based on this, a drive control signal is output to the drive unit 2 of the withdrawal prevention device 3 to selectively drive and control the lock plate 1 to the lock plate in which the lock plate 1 is erected and the unlocked position in which the lock plate 1 is laid down. Further, based on the settlement signal indicating whether the central fee settlement machine 32 has been settled or not yet settled and the output state of the position sensor 20, it is determined whether or not the parked vehicle has illegally exited as shown in the flowchart shown in FIG. The determination signal is output to the outside, and is used as, for example, a shutter trigger of a monitoring camera for photographing a vehicle number or an alarm command to a monitoring center. Therefore, the terminal 30 has a function of determining means for determining whether or not the terminal 30 is illegally leaving.

  Next, the unauthorized exit determination process by the terminal 30 will be described with reference to FIGS.

  In step 1 (indicated by S1 in the figure, the same shall apply hereinafter), it is determined based on a signal from the vehicle detection sensor 31 whether or not the vehicle has entered the parking space 4. When the vehicle detection signal from the vehicle detection sensor 31 is input, the determination is YES, and the process proceeds to step 2, and a predetermined time (time that can be determined that the entering vehicle is parked) has elapsed by a timer built in the terminal 30. It is determined whether or not. And if a vehicle detection state continues for a fixed time, determination of step 2 will become YES and will progress to step 3.

  In step 3, a lock command is output from the terminal 30 to the drive unit 2 of the withdrawal prevention device 3, and the drive unit 2 drives and controls the lock plate 1 to the upright locked position.

  In step 4, the output state of the position sensor 20 at the locked position where the locking plate 1 is brought into contact with the bottom of the vehicle 6 and stopped is stored. In this case, the height of the vehicle 6 is high, and the characteristic part detection output disappears from the position sensor 20 when the vehicle 6 is rotated from the lying unlocked position to the locked position as shown by the solid line in FIG. When the locking plate 1 passes through the standing position S1 corresponding to the predetermined rotation position and comes into contact with the bottom of the vehicle 6 at a further standing position, the output state of the position sensor 20 is in the ON state in this embodiment. Is remembered as Further, the height of the vehicle 6 is lower than that in FIG. 5, and as shown by the solid line in FIG. 6, the locking is performed at a position between the standing positions S <b> 1 and S <b> 2 where the light beam of the sensor unit 22 is blocked by the protrusion 21 a. When the plate 1 comes into contact with the bottom of the vehicle 6, the output state of the position sensor 20 is stored as an OFF state in this embodiment. The standing position S1 is a position where the protrusion 21a blocks the light beam of the sensor unit 22 when the locking plate 1 is rotated in the unlocking position direction from the locking position where the locking plate 1 is in contact with the bottom of the vehicle. The position at which the output of the sensor 20 changes from ON to OFF is shown. The standing position S2 is a position where the projection 21a is a sensor when the locking plate 1 rotates in the unlocking position direction from the locking position where the locking plate 1 is in contact with the vehicle bottom. The position where the light beam is blocked from being separated from the unit 22, that is, the position where the output of the position sensor 20 changes from OFF to ON is shown. Therefore, a characteristic part detection output (OFF signal in this embodiment) is generated from the position sensor 20 in the range from the standing position S1 to the standing position S2.

  Next, in step 5, it is determined whether the settlement is completed or not settled based on the settlement signal of the centralized fee settlement machine 32. If the settlement completion signal is input, the determination in step 5 is YES and the process proceeds to step 8. If the settlement completion signal is not input, the determination in step 5 is NO and the process proceeds to step 6.

  In step 6, it is determined whether or not the output state of the position sensor 20 has changed. Here, if there is no illegal exit, the locking plate 1 remains at the position indicated by the solid line in FIGS. 5 and 6, and the output state of the position sensor 20 does not change and the process returns to step 5. On the other hand, when the vehicle 6 gets over the locking plate 1 in an attempt to illegally leave and the locking plate 1 rotates in the lying down direction as shown by the two-dot chain line in FIGS. 5 and 6, in the case of FIG. The output state of the position sensor 20 changes from ON to OFF when the projection 21 a blocks the light beam of the sensor unit 22. In the case of FIG. 6, the protruding portion 21 a of the detection plate 21 is separated from the sensor portion 22, and the output state of the position sensor 20 changes from OFF to ON. Therefore, if there is an unauthorized exit, the determination in step 6 is changed and the process proceeds to step 7 to output an unauthorized exit detection output to the outside. With this unauthorized exit detection output, the vehicle number of the vehicle that has illegally exited by the monitoring camera is photographed, or an alarm device of the monitoring center is driven to generate an alarm.

  If it is determined in step 5 that payment is completed, an unlock command is output from the terminal 30 to the drive unit 2 of the exit prevention device 3 in step 8, and the lock plate 1 is unlocked by the drive unit 2. Drive control to position. Thereafter, in step 9, it is determined whether or not a certain time has passed, and in step 10 it is determined whether or not the vehicle has left. If the vehicle does not leave within a certain time, the determination in step 9 is YES. Returning to step 3, the terminal 30 again outputs a lock command to the drive unit 2 of the exit prevention device 3, and the drive unit 2 drives and controls the lock plate 1 to the upright locked position.

  According to such a configuration, it is possible to detect unauthorized withdrawal even when the locking plate 1 does not rotate to the lying position. Therefore, even in the case of a one-piece tire lock type withdrawal prevention device in which the locking plate 1 does not rotate to the lying down position when illegally leaving, or the vehicle body lock type withdrawal prevention device shown in FIG. By appropriately setting the standing position S1 to be shown, it is possible to detect unauthorized leaving reliably and early.

  In the flowchart of FIG. 4, an example of processing when the fee is settled on the central fee settlement machine 32 side is shown. However, when the fee settlement is performed on the terminal 30 side, the central fee settlement machine is unnecessary. Then, it is determined that the terminal 30 is free before a certain period of time based on the timing information of the built-in timer and charged when a certain period of time elapses. In the flowchart of FIG. What is necessary is just to judge whether it is free. If it is judged that it is charged in step 2, it will control to advance to step 3, and if it is judged that it is charged in step 9, it may be controlled to return to step 3.

  By the way, the vehicle height of the vehicle is various, and when the predetermined rotation position is set at a high position such as the standing position S1 in FIGS. 5 and 6, the locking plate is moved to the predetermined rotation position in a vehicle with a low vehicle height. A case where 1 does not stand up is conceivable. However, if the predetermined rotation position is set lower than the standing position S1 in FIGS. 5 and 6, in a vehicle having a high vehicle height and a light vehicle weight, the lock plate 1 is moved a predetermined number of times from the lock position where it contacts the bottom of the vehicle. There is a possibility that the position does not rotate to the moving position, and in any case, there is a possibility that the output state of the position sensor 20 does not change and an unauthorized exit cannot be detected.

  A second embodiment of the present invention that solves this problem will be described with reference to FIG.

  In the second embodiment, for example, two protrusions 21a are provided as features on the detection plate 21, for example, and as shown in FIG. 7, from the position sensor 20 at three standing positions S1, S2 and a lower standing position S3. A feature detection output is generated. The standing position S3 is a position where the second protrusion 21a blocks the light beam of the sensor unit 22 when the locking plate 1 is rotated in the unlocking position direction from the locking position where the locking plate 1 is in contact with the bottom of the vehicle. Indicates.

  According to such a configuration, as shown in FIG. 7, for a vehicle having a low vehicle height where the locking plate 1 does not stand up to the standing position S2, it is possible to detect unauthorized exit using the standing position S3. Further, as described above, the standing positions S1 and S2 are used for a vehicle having a high vehicle height and a light vehicle weight that does not rotate from the locked position where the locking plate 1 is in contact with the bottom of the vehicle to the standing position S3. Unauthorized exit can be detected.

  Therefore, according to the second embodiment, it is possible to detect unauthorized exit for a wide variety of vehicles without being affected by the height of the parked vehicle, and the detection capability of unauthorized exit is improved.

  Needless to say, the number of protrusions 21a is not limited to two, and two or more may be provided. In the second embodiment, the detection plate 21 is provided with a plurality of protrusions 21a and a single position sensor 20 detects a plurality of predetermined rotation positions (standing positions). A plurality of position sensors 20 that generate the characteristic part detection output at the standing position) may be provided.

  Next, a third embodiment of the present invention will be described with reference to FIGS.

  The exit prevention device 3 of the third embodiment is configured to detect a predetermined rotational position of the locking plate 1 using an optical sensor 40 as a locking plate change detecting means. As shown in FIG. 8, the optical sensor 40 includes a light emitting element 41 </ b> A and a light receiving element 41 </ b> B that face each other with the locking plate 1 interposed therebetween. The light emitting element 41A is arranged at the end of the parking space center, for example, at the center of the parking space, the light receiving element 41B is arranged, for example, in the case of the drive unit 2, and the locking plate 1 is shown by a chain line in FIG. The height position at which the light beam M from the light emitting element 41A toward the light receiving element 41B is blocked by the locking plate 1 when positioned at the standing position S1 (shown in FIG. 9), which is a predetermined rotational position. To place.

  The unauthorized exit detection operation by the optical sensor 40 of the third embodiment is the same as that of the position sensor 20 described above, and the output of the optical sensor 40 is, for example, ON at the standing lock position where the parked vehicle is locked, The terminal 30 stores this state, and the output of the optical sensor 40 changes from ON to OFF when the locking plate 1 passes the standing position S1 as shown by the chain line in FIG. If the change in the output state of the optical sensor 40 is detected and the parking fee is not settled at that time, the terminal 30 determines that the user has left illegally and generates an unauthorized exit detection output to the outside.

  In the third embodiment, it goes without saying that a plurality of optical sensors 40 may be arranged in the height direction of FIG. 9 to set a plurality of predetermined rotation positions.

  Next, a fourth embodiment of the present invention will be described based on FIG.

  The fourth embodiment is an example in which a rotation sensor 50 that detects a predetermined rotation amount as a rotation displacement of the lock plate 1 is used as the lock plate change detection means. As shown in FIG. 10, the rotation sensor 50 includes a slit plate 51 that is a ring-shaped detection plate having, for example, slits 51 a as a number of features at equal intervals on a part of the peripheral portion, and a slit of the slit plate 51. The rotary encoder sensor includes a sensor unit 52 that generates a signal, for example, a pulse signal each time the signal 51a passes. The slit plate 51 is fixed to the rotating shaft 13, and the sensor unit 52 is fixed to the frame 14. As the sensor unit 52, for example, an optical sensor having the same configuration as the sensor unit 22 of the position sensor 20 shown in FIG. 2 may be used.

  In the case of the rotation sensor 50 as well, the sensor portion 52 may be attached to the rotation shaft 13 side and the slit plate 51 may be fixed to the frame 14 side. Any part that rotates in conjunction with the plate 1 may be used. Further, as the rotation sensor 50, for example, a detection plate provided with a large number of projections as feature portions at equal intervals on the periphery of a metal disk, and each projection closes as the detection plate rotates. It is possible to use a magnetic sensor that generates a detection output.

  In the present embodiment, the terminal 30 receives the pulse signal of the rotation sensor 50 instead of the position sensor 20 and counts the number of pulse signals output from the rotation sensor 50 in the configuration of FIG. Is built in.

  Next, an unauthorized exit determination process by the terminal 30 according to the fourth embodiment will be described with reference to the flowchart of FIG.

  Steps 21 to 23 are the same as steps 1 to 3 in FIG.

  After the lock plate 1 is driven and controlled to the lock position in step 23, the counter is operated in step 24 to enable the counting operation of the pulse signal from the rotation sensor 50.

Thereafter, in step 25, it is determined whether the parking fee has been settled or not settled in the same manner as in step 5 in FIG. 4. If the parking fee has not been settled, the process proceeds to step 26, and the count value N of the counter becomes the detection criterion for unauthorized exit. It is determined whether or not a preset set value N ₀ corresponding to the standing position (S1 or S2) is greater than or equal to. If there is no unauthorized exit, the locking plate 1 does not rotate from the locked position, and no pulse signal is generated from the rotation sensor 50. Therefore, it is determined that N <N ₀ and there is no unauthorized exit and the process returns to step 25. On the other hand, when the vehicle 6 climbs over the locking plate 1 in an attempt to illegally leave and the locking plate 1 rotates in the lying down direction, the number of slits 51a corresponding to the amount of rotation of the rotating shaft 13 crosses the sensor portion 52 and crosses it. A number of pulse signals corresponding to the number of slits generated from the rotation sensor 50. If N ≧ N ₀ , it is determined that there is an unauthorized exit, and the process proceeds to step 27 to output an unauthorized exit detection output to the outside. Note that the processing operations in steps 28 to 30 when it is determined in step 25 that payment has been completed are the same as steps 8 to 10 in FIG.

  According to the configuration of the fourth embodiment, since the unauthorized withdrawal is detected only by the amount of rotation from the lock completion position where the lock plate 1 is in contact with the bottom of the vehicle, it can be detected regardless of the vehicle height. Thus, unlike the position sensor 20 and the optical sensor 40, there is an advantage that it is not necessary to increase the number of protrusions 21a or increase the number of sensors.

  Note that the characteristic part (slit in the present embodiment) of the detection plate 51 knows the rotation angle when the characteristic part is detected if the characteristic part position and the rotation angle are stored in correspondence with each other. Since it is possible, it is not always necessary to provide them at regular intervals.

Since the rotation sensor 50 of FIG. 10 is a one-phase type and cannot determine the rotation direction of the locking plate 1, the pulse signals are integrated regardless of the rotation direction of the locking plate 1. For this reason, if the locking plate 1 in the locking position is shaken for some reason and a pulse signal is generated and the integrated value becomes N _0, there is a possibility that an unauthorized exit detection output is erroneously output even though it is not unauthorized exit. There is.

  In order to solve this problem, a two-phase rotation sensor 60 that generates a two-phase signal, for example, a pulse signal, as shown in FIG. 12 may be used. The rotation sensor 60 includes a first slit group 61A and a second feature part as a first feature part group in which the positions of, for example, the slits 61a and 61b as mutual feature parts are shifted in the circumferential direction so that overlapping portions exist. A slit plate 61 which is a detection plate provided with a second slit group 61B as a group in the radial direction, and a sensor unit 62 having two photosensors corresponding to each of the slit groups 61A and 61B, In this configuration, pulse signals are generated with a phase difference corresponding to the shift amount of the slits 61a and 61b from the optical sensor.

  According to the rotation sensor 60, since the rotation direction of the locking plate 1 can be determined from the phase relationship between the two pulse signals, a pulse generated when the locking plate 1 rotates in the lying down direction for any one of the pulse signals. By adding the signal and subtracting the generated pulse signal when rotating in the direction opposite to the lying direction, it is possible to accurately detect the amount of rotation of the locking plate 1 in the lying direction, which is illegal when a rotation sensor is used. The detection accuracy of exit can be improved.

  As the locking plate change detecting means, for example, a potentiometer 70 can be used as shown in FIGS.

  In the figure, the potentiometer 70 includes a disc 71 fixed to the rotating shaft 13, a resistor provided along the circumferential direction at the peripheral portion of the disc 71, one end connected to the power source 72 and the other end grounded. Body 73 and a slider 74 that is fixed to the frame 14 and has one end sliding on the resistor 73 as the rotary shaft 13 rotates, and the voltage value of the frame fixed end 74a of the slider 74 changes. It is the structure which detects unauthorized leaving based on this. Note that the connection line between the resistor 73, the power source 72, and the ground is provided with a sufficient slack so that the connection is not disconnected when the rotating shaft 13 rotates.

  In the case of detecting unauthorized withdrawal by the potentiometer 70, if the resistance value of the resistor 73 per unit rotation amount (unit rotation angle) of the rotation shaft 13 is made constant, a voltage change proportional to the rotation amount can be obtained. Therefore, for example, the voltage value when the locking plate 1 stops at the locked position in the standing state is stored, and the difference between this stored value and the detected voltage value in the parked vehicle locking is a predetermined voltage difference set in advance. When it becomes, it should just be judged as an unauthorized exit.

  In addition to the configuration described in each of the above-described embodiments, for example, a pressure sensor may be used as the locking plate change detection unit. For example, if a pressure sensor detects the external pressure acting on the locking plate 1 due to the vehicle weight when a parked vehicle that illegally exits the locking plate 1 at the locked position in the standing state, the detection output is obtained. It is possible to detect unauthorized exit based on this.

  Further, in each of the embodiments described above, the example of the tire lock type withdrawal prevention device shown in FIG. 15 has been described, but it goes without saying that the vehicle body locking type withdrawal prevention device shown in FIG. 16 may be used.

The principal part perspective view which shows 1st Embodiment of the withdrawal prevention apparatus of this invention. Detailed view of the position sensor of the first embodiment Block diagram showing input / output relationship of terminal Flowchart for explaining the unauthorized exit determination processing operation of the terminal Explanatory drawing which shows the relationship between the rotation position of a locking plate, and the output state of a position sensor Another explanatory diagram showing the relationship between the rotation position of the locking plate and the output state of the position sensor Explanatory drawing which shows the relationship between the rotation position of the locking plate by 2nd Embodiment of this invention, and the output state of a position sensor. The principal part perspective view which shows 3rd Embodiment of this invention. Explanatory drawing which shows the positional relationship of the locking plate and optical sensor of 2nd Embodiment same as the above. Detailed view of the rotation sensor used in the fourth embodiment of the present invention The flowchart explaining the unauthorized leaving determination processing operation of the terminal according to the fourth embodiment. Detailed view showing another configuration example of the rotation sensor Detailed view showing another configuration example of the locking plate change detecting means Front view of FIG. Explanatory drawing of tire lock-type exit prevention device Explanatory drawing of the body lock type exit prevention device Explanatory drawing of the problems of the conventional lock-out device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Locking plate 2 Drive part 11 and 13 Rotating shaft 20 Position sensor 21 Detection board 21a Protrusion part 22 Sensor part 40 Optical sensor 41A Light emitting element 41B Light receiving element 50 Rotation sensors 51 and 61 Slit plates 61A and 61B Slit groups 51a and 61a 61b Slit 70 Potentiometer 71 Disc 72 Power supply 73 Resistor 74 Slider

Claims (12)

A locking plate that locks the parked vehicle, and a drive unit that selectively rotates the locking plate to a locked position where the locked plate is raised and a lying unlocked position, and when the vehicle enters, the locking plate In the parked vehicle exit prevention device configured to prevent the parked vehicle from exiting by driving from the unlocked position to the locked position,
A lock plate change detecting means for detecting a change in the standing state of the lock plate driven to the lock position is provided, and unauthorized parking of the parked vehicle is detected based on a detection output of the lock plate change detecting means. A parked vehicle exit prevention device characterized in that it is configured to detect.   The parked vehicle exit prevention device according to claim 1, wherein the locking plate change detecting means is configured to detect a change in the standing state of the locking plate based on a rotational displacement of the locking plate.   The parked vehicle exit prevention device according to claim 2, wherein the locking plate change detecting means is configured to detect a predetermined rotation position of the locking plate.   The lock plate change detecting means includes a detection plate having a feature portion at a peripheral portion and a sensor portion for detecting the feature portion of the detection plate, and the feature portion detection output from the sensor portion at the predetermined rotation position. 4. The structure according to claim 3, wherein the detection plate is fixed to one of a shaft portion that rotates the locking plate and a fixing portion around the shaft portion, and the sensor portion is fixed to the other. The parking vehicle exit prevention device according to the description.   The lock plate change detecting means is composed of an optical sensor having a light emitting element and a light receiving element facing each other across the lock plate, and projecting light from the light emitting element to the light receiving element at the predetermined rotation position. 4. The parked vehicle exit prevention apparatus according to claim 3, wherein the light emitting element and the light receiving element are arranged so that a beam is blocked by a locking plate to generate a sensor output.   The parked vehicle exit prevention device according to any one of claims 3 to 5, wherein a plurality of the predetermined rotation positions are set.   The parked vehicle exit prevention device according to claim 2, wherein the locking plate change detecting means is configured to detect a predetermined rotation amount of the locking plate.   The lock plate change detecting means includes a detection plate having a plurality of feature portions in the circumferential direction at a peripheral portion, and a sensor portion that generates a signal each time the feature portion of the detection plate passes, and the lock plate The detection plate is provided in one of the shaft portion that rotates the shaft and the fixed portion around the shaft portion, the sensor portion is provided in the other, and the predetermined rotation amount of the locking plate is determined based on the number of signals of the sensor portion. 8. The parked vehicle exit prevention device according to claim 7, wherein the parked vehicle exit prevention device is configured to detect.   The detection plate is provided with a first feature group and a second feature group that are shifted in the circumferential direction so that there is an overlapping portion between the feature positions in the radial direction, and the phases are shifted from each other from the sensor unit. The parked vehicle exit prevention device according to claim 8, wherein the parking vehicle exit configuration is configured to generate a two-phase signal.   The parking fee is not yet settled, and the lock plate change detection means includes a determination unit that determines that the vehicle is illegally moved when it detects a change in the lock plate in the standing state. The parked vehicle exit prevention device according to one.   When the lock plate change detection means has the configuration according to any one of claims 3 to 6, the determination means includes the lock plate change detection means when the lock plate is in the lock position. 11. The configuration according to claim 10, wherein the output state is stored, the parking fee is not settled, and it is determined that the vehicle is illegally moved when the output state of the locking plate change detecting means is different from the stored output state. A parking vehicle exit prevention device.   When the lock plate change detection means has the configuration according to any one of claims 7 to 9, the determination means has not yet settled a parking fee, and the lock plate change detection means performs the predetermined time from the lock plate change detection means. The parked vehicle exit prevention apparatus according to claim 10, which is configured to determine that an unauthorized exit occurs when a predetermined number of signals corresponding to the amount of movement are input.

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