JP2005099057A - Microwave detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a microwave detector that can execute an intrinsic detecting operation and an associated alarming operation using a simple structure and can suppress false alarms. <P>SOLUTION: The microwave detector has a microwave detector body for detecting desired microwaves, means 8 for raising an alarm, when the microwave detector body detects the microwave; a GPS detection part 3 for detecting a current position; a position storage part 4 for storing the position of a target; a position displacement storage part 6 for recording displacement of the vehicle position; a detection part 5 for outputting a detection signal, when the distance from the current position computed by the GPS detection part to the target is within a given range; an approach determination part 7 for determining whether the vehicle approaches the target from the relation between the vehicle position displacement and the target position; an alarm part 8 for raising an alarm-notifying the target; and a temporary alarm content storage part 15 for storing installation information about the target, when the position information detected by the GPS detection part is within a given distance of the target. When the microwave detector body detects microwaves, the alarm is controlled, based on the installation information stored in the temporary alarm content storing means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a microwave detector.

  In recent years, a number of speed monitoring devices for measuring the speed of a vehicle have been installed around the road. As an example of a speed monitoring device, a microwave of a predetermined frequency band is emitted toward a vehicle, and the reflected wave is received to measure the traveling speed of the vehicle.

  On the other hand, in order to detect the presence of such a speed monitoring device, a microwave detector configured to detect a microwave emitted from the speed monitoring device and output an alarm is conventionally known.

  However, depending on the installation location of the speed monitoring device, road conditions, and other surrounding environments, conventional microwave detectors can be detected from a relatively long distance, and can be detected only after a relatively close distance. .

  Also, some speed monitoring devices cannot be detected by conventional microwave detectors. As an example, there is a type in which a loop-shaped coil is embedded in the ground and a vehicle speed is determined while detecting the vehicle passing over the coil, as called a loop type. Others detect the speed of the vehicle using light other than microwaves.

  Therefore, recently, using GPS information, the installation position information of the speed monitoring device is stored in advance, and when the current position approaches the stored installation position, an alarm is issued regardless of whether microwaves are detected or not. There is something like that.

  However, the alarm system using GPS information has the following problems. That is, when a target is within a predetermined distance from the current vehicle position, an alarm is issued even if the vehicle is not a monitoring target of the speed monitoring device that is the target. In other words, the speed monitoring device detects a vehicle traveling on a certain lane at a predetermined speed or higher. For example, when traveling on a road that is not monitored by the speed monitoring device, an alarm is not originally required. However, if the vehicle and the speed monitoring device, which is the target, are less than a certain distance, an alarm is issued.

  Such a phenomenon may occur, for example, when a speed monitoring device is installed in the up lane, when traveling in a down lane, or when the speed monitoring device joins the up lane from the back in the traveling direction of the speed monitoring device. In addition to this, there are cases of traveling on a highway and a road formed so as to extend substantially in parallel, such as a general road formed in parallel therewith.

  In order to solve this, for example, a map is provided like a navigation device, map matching or DGPS function is provided to recognize an accurate vehicle position, and it is determined whether or not the vehicle is traveling in the monitoring area of the speed monitoring device. This can be dealt with by determining whether or not an alarm is necessary. However, in order to implement these, it becomes a complicated structure and an implementation cost will become large.

  The present invention has been made in view of the above-described background. The object of the present invention is to solve the above-described problems and to perform an original detection operation and an accompanying alarm operation with a simple configuration. It is an object of the present invention to provide a microwave detector that can suppress the occurrence of the occurrence as much as possible.

  In order to achieve the above-described object, a microwave detector according to the present invention includes a microwave detector main body that detects a desired microwave, and a means for alarming when a microwave is detected by the microwave detector main body, A position detection means; a position storage means for storing the position of the target; a position displacement storage means for recording a displacement of the position of the vehicle; and a distance from the position detection means and the position storage means to the target is within a predetermined range. A microwave detector having a detection means for outputting a detection signal at times and an alarm means for warning the presence of the target, wherein the position information detected by the position detection means is at a predetermined distance from the target When an alarm content temporary storage means (in the embodiment, corresponding to “target information temporary storage unit 15”) for storing the installation information of the target is provided, and the microwave detector detects a microwave And to control an alarm based on the installation information stored in the warning contents temporary storage means.

  With such a configuration, even when the position detection unit is stopped or the position information cannot be measured due to the cause of the surrounding environment, a satisfactory alarm output can be performed. The alarm content stored in the alarm content temporary storage means may be deleted based on the output of the detection means.

  Here, the position detecting means, the position storing means for storing the position of the target, the position displacement storing means for recording the displacement of the position of the vehicle, and the distance from the position detecting means and the position storing means to the target are predetermined. The detection means for outputting a detection signal when it is within the range and the alarm means for alarming the presence of the target are an alarm function based on position detection implemented in the microwave detector, that is, an in-vehicle target detection device. You can also. Then, the microwave detector according to the present invention can be regarded as having a microwave detector main body for detecting a desired microwave and an in-vehicle target detection device.

  In this case, the alarm means that operates based on the detection signal of the microwave detector main body and the alarm means of the in-vehicle target detection apparatus may be shared or provided separately. In any case, it is preferable that the type of alarm that is generated when the microwave is detected is different from the type of alarm that is generated when the vehicle-mounted target detection device detects a target. Of course, an alarm can be made without distinguishing between the two. Differentiating here means that the type of alarm device can be changed, for example, one is appealing to hearing such as a buzzer or sound, and the other is appealing to vision such as an LED. Also, the present invention is not limited to this, and various modes such as changing the contents of a buzzer (alarm) or changing the contents of a buzzer and sound can be taken. In short, it is only necessary to distinguish between an alarm based on detection of a microwave and an alarm based on detection of a target.

  Further, according to the microwave detector of the present invention, the alarm means controls the alarm based on the output of the microwave detector main body and the installation information of the target close to the position of the vehicle. The alarm can be controlled so that the alarm is issued only when the setting information of the target object close to the position of the vehicle when the microwave detector detects the microwave has a predetermined content.

  Furthermore, the microwave detector main body is provided with signal intensity detection means for detecting the signal intensity of the received signal, and when the signal intensity is smaller than the threshold value, the target that emits the microwave is detected based on the position information. It is advisable to issue a normal alarm on the condition that it has been.

  That is, when a predetermined target is detected, an alarm is given because the possibility of microwaves from the target is high even if the signal intensity is small. When such a target is not detected, it is highly likely that the object is not a noise or other detection target, so a normal alarm is not issued. Here, “no regular alarm” includes both no alarm itself and alarms in different modes (minor alarms). Further, when the position information cannot be acquired, for example, it is possible to take a countermeasure such as holding the alarm until the next position information can be acquired.

  Further, as an in-vehicle target detection device mounted on the microwave detector together with the microwave detector main body, for example, a position detection means, a position storage means for storing the position of the target, and a displacement of the position of the vehicle are recorded. Position displacement storage means, detection means for outputting a detection signal when the distance from the position detection means and the position storage means to the target is within a predetermined range, and the relationship between the displacement of the position of the vehicle and the position of the target An on-vehicle target alarm device having an approach determination means for determining whether or not the vehicle is approaching the target and an alarm means for warning the presence of the target, wherein the alarm means is an output of the detection means. An alarm can be controlled from the output of the approach determination means.

  In the embodiment, both outputs are directly given to the alarm unit. However, the present invention is not limited to this, and the output of the detecting unit is given to the approach determining unit, and the approach determining unit is operated only when the detection signal is ON. As described above, those that indirectly use two outputs are also included.

  In this case, since the approach determination means is provided, it is determined that the vehicle is approaching the target, and this determination result is also set as a condition for the alarm. Therefore, even if the distance to the target is short, it can be estimated that the target is installed on a different road from the road on which it is traveling, preventing malfunction (false alarm). can do.

  Preferably, an installation information storage means for storing the installation information of the target in relation to the position of the target is provided, and the approach determination means takes the installation information stored in the installation information storage means into account. It is determined whether or not the object is approaching, and the alarm means controls the alarm based on the output of the detection means, the output of the approach determination means, and the output of the installation information storage means.

  Even if the target is approaching, the target may be installed on a road different from the road on which the vehicle is traveling. In such a case, it is possible to suppress false alarms by taking the installation information into consideration. In other words, when the monitoring direction of the target is registered as the installation information, for example, a condition is added as to whether or not the vehicle is within a predetermined range defined by the monitoring direction. Will not alert you even if you are approaching. If it is outside the monitoring range, there is no problem even if no alarm is given.

  In addition, the target installation information may be road information, target type, target lane information, and the like, and such information may be reported. The driver (user) who has heard the informed installation information determines whether or not there is a target ahead of the traveling road by determining whether or not it matches the currently traveling road. be able to.

  On the other hand, there is provided separation determination means for determining whether or not the vehicle is moving away from the target based on the relationship between the displacement of the position of the vehicle and the position of the target, and the warning means is configured such that the separation determination means causes the separation determination means to It can also be configured to control to stop the alarm when it is determined that the alarm is detected. Thereby, it can suppress that a useless alarm continues.

  Still further, there is provided a relationship determination means for determining the relationship between the current position of the vehicle and the target, and the warning means is configured to notify the relationship between the vehicle and the target based on the output of the relationship determination means. You can also. With such a configuration, it is possible to provide a material for determining whether or not there is a target ahead of the traveling road, in the same manner as the notification of the various installation information described above.

  Furthermore, a selection switch for selecting usage information (installation information, relations, etc.) of the alarm content may be provided, and the alarm means may determine the content to be alarmed based on the setting of the selection switch. When a plurality of types of information are registered, all of them may be used, or a part of information selected by the selection switch can be used. Thereby, an alarm suitable for the traveling situation can be issued.

  As described above, according to the present invention, it is possible to perform the original detection operation and the accompanying alarm operation with a simple configuration, and to suppress the occurrence of a false alarm as much as possible.

  FIG. 1 shows a first embodiment of an in-vehicle target detection device mounted on a microwave detector according to the present invention. As shown in the figure, a GPS detection unit 3 as position detection means for acquiring GPS information, a position storage unit 4 that stores position information of a target (detection target), and a current position detected by the GPS detection unit 3 And a detection unit 5 for obtaining a distance to the target based on the position information of the target existing in the periphery stored in the position storage unit 4 and outputting a detection signal when the distance to the target is within a predetermined range. A position displacement storage unit 6 that stores the displacement of the current position detected by the GPS detection unit 3, vehicle position displacement information stored in the position displacement storage unit 6, and a target stored in the position storage unit 4 An approach determination unit 7 that determines whether or not the vehicle is approaching the target from the relationship with the position of the vehicle, and an alarm unit 8 that receives the outputs of the detection unit 5 and the approach determination unit 7 and controls the alarm. .

  In addition, although illustration is omitted, the power source of this embodiment is configured to be taken from a cigar socket of the vehicle. In other words, the vehicle battery is used. In addition, it is good also as a secondary battery charged by a solar cell and it.

  The GPS detection unit 3 receives a GPS signal emitted from the earth position measurement satellite and measures the current position of the vehicle. Specifically, GPS signals emitted from a plurality of satellites are received by the receiving antenna 3a and the GPS receiver 3b, and the reception is given to the position detector 3c, where the current position (based on the received information) Longitude and latitude information) is calculated.

  In addition, although it is the drive of this GPS detection part 3, it is preferable to carry out a continuous operation | movement (when it makes it intermittent, a temporary stop period is short) as long as electric power permits. Therefore, when the power source is taken from the cigar socket, it is made continuous. In the case of a configuration in which power supply is received from a solar cell (secondary battery), it is necessary to drive intermittently, and preferably, by changing the ratio of pause / operation according to the situation Therefore, an operation control unit for this purpose is provided.

  In the position storage unit 4, the latitude and longitude of the place where the target is installed are registered as the position information of the target to be stored. Further, the target to be registered is a device for monitoring the vehicle, such as a speed monitoring device or a number reading device called an N system. Therefore, the position information may be registered in association with the type of target. If it does in this way, more exact information can be conveyed to a driver by changing the alarm at the time of detection according to the kind of target. Further, the present invention is not limited to the device for monitoring the vehicle, and may be a malfunction source such as an automatic door.

  For the position (latitude, longitude) of the target object stored in the position storage unit 4, for example, the position of the target object to be detected can be registered in advance using an input operation unit (not shown). In this input operation, an operation panel, an input button, etc. provided on the microwave detector may be operated to input latitude, longitude, etc., or a ROM or various storage media may be set and received from there. As described above, a user can register or store a certain amount of information at the time of factory shipment.

  Note that the target (position information of the target) stored in the position storage unit 4 is not only the position where the target actually exists, but also the position where the presence of the target is warned, for example, the position of the target 1 km before the target. May be defined.

  The position displacement storage unit 6 stores a plurality of pieces of position information (latitude, longitude) output from the position detection unit 3c every time or at predetermined intervals, and stores them in time series so that the displacement can be understood. When the physical addresses are stored so as to be continuous, only the position information is simply stored sequentially, and when the time information, the record number, etc. are stored in association with each other, the storage position is arbitrary.

  Further, since this position information only needs to be stored for the latest predetermined number of times, for example, if a ring buffer is prepared on the memory, the position information is stored in order from the top, and the ring buffer capacity is stored, By sequentially overwriting, the latest position information for a plurality of times can be stored and held.

  The detection unit 5 obtains the distance to the target from the current position and the position information of each target stored in the position storage unit 4 and outputs a detection signal when the target is within a predetermined distance. 8 to give.

  The approach determining unit 7 determines whether or not the vehicle is approaching the target. Specifically, the approach determining unit 7 determines the position of the vehicle stored in the position displacement storage unit 6 and the distance to the target. It can be determined that the vehicle is moving toward the target when the distance to the target is reduced.

  As another approach determination method, the vehicle movement trajectory is obtained from the position information stored in the position displacement storage unit 6, and if there is a target on the extension line (within a predetermined range) of the trajectory, the vehicle It can also be determined that the vehicle is moving toward the target. In this way, it is possible to prevent erroneous detection of a target that is not on the extension line of the same road.

  As another determination method, for example, the traveling direction of the vehicle is obtained from the position information stored in the position displacement storage unit 6, and if there is a target within a predetermined angle range with reference to the traveling direction, the target is It can be determined that the vehicle is traveling toward, that is, approaching. By setting the predetermined angle range in this way, the range becomes wider as the distance from the vehicle increases. Therefore, even if the road is curved, the target ahead of the road is set within the predetermined angle range. It can be detected and it can recognize that it is approaching. In other words, if there is no target within the predetermined angle range, it can be determined that the vehicle is traveling in a direction different from the target, such as the reverse direction, and it can be estimated that the target is not approaching. The predetermined angle is preferably increased as the distance from the target is closer.

  Furthermore, as will be described later, when the monitoring direction of the target is stored, the angle formed by the monitoring direction and the traveling direction of the vehicle is obtained. If the angle formed is within a predetermined angle range, the vehicle is approaching. Can be determined. If the predetermined angle serving as the determination reference at this time is also changed according to the distance from the target, it can be determined with higher accuracy. Of course, other determination methods can be used. In any case, if it is determined that the vehicle is approaching, an approach determination signal is output toward the alarm unit 8.

  The alarm unit 8 issues an alarm when both the detection signal and the approach determination signal are ON, that is, when it is determined that the vehicle is approaching the target with the distance to the target within a certain range. In addition, by adding the remaining distance to the target as information output from the detection unit 5, the alarm unit 8 notifies the remaining distance to the target, or the number of target units detected by the detection unit. Can also be notified.

  FIG. 2 shows a second embodiment of the on-vehicle target detection device mounted on the microwave detector according to the present invention. The present embodiment is based on the first embodiment described above, and further includes an installation information storage unit 4a that stores the installation information of the target in relation to the position information of the target. The installation information stored here means, for example, the monitoring direction (direction: ○ degree from north) of the target, the type of the target (monitoring device type, malfunctioning source), installation route information (National Route ○), etc. .

  This installation information is used as a determination condition when determining the presence or absence of an alarm in the alarm unit 8, or becomes notification information when alarming. That is, for example, when the installation information is the target monitoring direction, both the approach determination signal and the detection signal are ON, and when the vehicle exists within a predetermined angle with respect to the monitoring direction, When the angle formed between the traveling direction and the monitoring direction is a predetermined value, an alarm can be output for the first time. Thus, for example, as shown in FIG. 3, when the vehicle takes a displacement of B1 → B2 → B3 with respect to the target existing at point A, the viewpoint (B1, B2, B3) of the vehicle and the target (A The distance to the point is gradually approaching. Therefore, both the approach determination signal and the detection signal are turned on. Therefore, in the first embodiment, an alarm is output.

  However, since the vehicle is actually traveling on a road where no target is installed, an alarm is not necessary. Therefore, according to the present embodiment, when the monitoring direction of the target is the direction of the arrow in the figure, the point B2 is out of the range of the corner angle formed by the monitoring direction, and no alarm is issued. Thereby, it is possible to suppress false alarms. Of course, even if it is within a predetermined angle, for example, when the approach determination signal is OFF (not approaching) such as when traveling in the reverse direction on the road where the target is installed in FIG. There is no alarm.

  In addition, the installation information includes road information (road number) such as “National highway XX”, “XX highway”, and “prefectural road XX” and lane information such as “upbound lane” and “downbound lane”. In this case, when the alarm is issued, the alarm unit 8 can notify the installation information together. Whether to issue an alarm in this case is determined by alarming when both the approach determination signal and the detection signal are ON as in the first embodiment, or by taking the installation information into consideration as described above. Various methods such as determining the presence or absence of an alarm based on the three conditions can be adopted.

  In this way, by notifying road information etc., the driver can recognize whether the warning is intended even if he / she is driving on a road other than the road where the target is located. It can be recognized that this is an alarm.

  In other words, depending on the situation such as a three-dimensional intersection where the road is complicated, there is a case where there is a road parallel to the top and bottom, and even if the approach determination is used, an appropriate alarm may not be performed. In this case, the driver can check which road he is currently driving and knows the lane information (up / down) using road signs, etc. without knowing it. It can be determined whether an object is on the currently traveling road. Therefore, even in the case of a false alarm, the driver can recognize that the alarm is out of the target.

  In the case of lane information, since only two states are represented, when storing in the installation information storage unit 4a, only one bit of information is required, and the memory used for the installation information storage unit is minimized. This is preferable.

  Further, when the type of target (H system, N system) is notified, the following effects are obtained. That is, it is generally difficult to distinguish a device for detecting the state of the vehicle, and there is a possibility that an erroneous determination is made when the target is a speed monitoring device or a travel system monitoring device. By notifying the contents of the object, it is possible to recognize these accurately. In addition, since another structure and effect are the same as that of above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted.

  FIG. 4 shows a third embodiment of the in-vehicle target detection device mounted on the microwave detector according to the present invention. This embodiment is based on the second embodiment, and further includes a departure determination unit 9. The departure determination unit 9 determines whether the vehicle is moving away from the target based on the displacement information stored in the position displacement storage unit 6 and the position information of the target stored in the position memory. is there. The same determination algorithm as the approach determination unit 7 (the final determination is reversed) can be used (of course, it is not prohibited to take another method). That is, in the case of the approach determination unit 7, the distance to each target position stored in the position displacement storage unit 6 and the distance to the target are obtained. However, when the distance is longer, the departure determination unit 9 determines that the vehicle is leaving, and turns the separation determination signal ON.

  When the departure determination signal (ON) is given from the departure determination unit 9, the alarm unit 8 determines that the vehicle is moving away from the target and controls to stop the alarm. With such a configuration, it is possible to prevent an unnecessary alarm from being notified indefinitely.

  In addition, since another structure and effect are the same as that of above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted. In this embodiment, the second embodiment is basically used. However, the first embodiment may be used as a basis.

  FIG. 5 shows a fourth embodiment of the in-vehicle target detection device mounted on the microwave detector according to the present invention. As shown in the figure, the present embodiment is based on the third embodiment, and further includes a relationship determination unit 10 for determining the relationship between the current position of the vehicle and the target, which is determined here. The relationship is also given to the alarm unit 8. The relationship determined by the relationship determination unit 10 is the positional relationship between the two in this embodiment. That is, the position information of the target stored in the position storage unit 4 and the current position of the vehicle given from the position detection unit 3c (strictly, for example, the previous position information is stored and the traveling direction is obtained). Based on the above, the installation direction (left, right) of the target viewed from the vehicle and the angle between the vehicle and the target (20 degrees left, etc.) are obtained. The obtained result is passed to the alarm unit 8.

  In the alarm unit 8, the received relationship is used as notification information when an alarm is issued in the same manner as the above-described target installation information. That is, when the approach determination signal from the approach determination unit 7 is ON (approaching) and the detection signal from the detection unit 5 is ON (within a certain distance), an alarm is output. For example, a specific relationship such as “there is a target on the right side in the traveling direction” or “a target exists in the direction of 20 degrees to the left” is also notified.

  As a result, as in the case of notifying the installation information, even if an alarm is issued when driving on a lane or road that is not the target, the driver must confirm that the alarm is an out-of-target alarm. Can be recognized. This is particularly effective when the driver recognizes the state of the road on which the driver is traveling. In other words, although it is a road with a straight line, in the case of a large angle or a general road, it is often installed on the left or upper side of the road, but it was reported that there is a target on the right side. In some cases, it can be estimated that it is out of scope.

  In addition, since another structure and effect are the same as that of above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted. In this embodiment, the third embodiment is used as a basis. However, other embodiments may be used as a basis.

  FIG. 6 shows a fifth embodiment of the in-vehicle target detection device mounted on the microwave detector according to the present invention. As shown in the figure, the present embodiment is based on the fourth embodiment. And the selection switch 11 which selects the information to use among the output of the installation information storage part 4a and the output of the relationship determination part 10 is provided. That is, as described in the second embodiment, there are various types of installation information stored in the installation information storage unit 4a, and all of the stored installation information may be always used, but it is suitable depending on the situation. There is information that is not suitable for information (not very meaningful).

  Therefore, a selection switch is provided so that information to be used can be selected by the user, and a plurality of pieces of installation information are notified in combination, thereby enabling notification according to the purpose of use. Furthermore, in this embodiment, the presence / absence of notification can be selected for the relationship (positional relationship) between the vehicle and the target determined by the relationship determination unit 10. Thereby, it is possible to warn appropriate information for each region by allowing the driver to select which information is to be notified according to the situation at that time.

  In the state shown in the figure, information (installation information and related information) to be notified at the time of alarm is once given to the alarm unit 8 via the selection switch 11 and is used as a selector, but data (information) Of course, it is also possible to send and receive data directly to the alarm unit 8 in the same manner as in the above-described embodiments, and to set the presence or absence of use by a selection switch. In that case, the selection command may be given to the installation information storage unit 4a and the relationship determination unit 10 side (controls whether or not information is output) or may be given to the alarm unit 8 side.

  In addition, since another structure and effect are the same as that of above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted. In this embodiment, the fourth embodiment is basically used. However, other embodiments may be used as a basis.

  FIG. 7 shows a main configuration of the microwave detector according to the first embodiment of the present invention. In this embodiment, the vehicle-mounted target detection device shown in FIG. 1 is incorporated. As shown in the figure, the microwave detector body 12 is further provided for detecting a microwave in a predetermined frequency band based on the set operation setting condition and outputting a control signal for outputting an alarm, and the microwave detector Based on the detection signal of the main body 12, the alarm unit 8 issues an alarm.

  The microwave detector body 12 detects a microwave having a desired frequency based on the microwave captured via the horn antenna 12a, and determines whether the target microwave is received based on the detection output signal. . When it is received, a detection signal is sent to the alarm unit 8 to output a predetermined alarm. For example, the alarm may be a buzzer or a sound, or may be various types such as a lamp such as a light LED or a display. Preferably, the type of alarm is made different between when the microwave is received and when it is based on the GPS position information.

  Many speed monitoring devices installed on ordinary roads often use microwaves. In addition, since there are many speed monitoring devices that are installed but not in operation, the driver can make a more accurate judgment by integrating with a microwave detector.

  Further, by providing the microwave detector main body 12 in this way, the position information of the target can be automatically registered based on the output of the microwave detector main body 12. That is, when a desired microwave is detected, the S meter output is monitored, and when the maximum value is reached, it can be determined that the transmitter is closest to the transmission source, and the position information (latitude, longitude) at that time is detected by the position detector. It can be received from 3c and stored.

  As an example, when the position of the malfunction source is stored, such as a human body sensor in an automatic door, for example, control is performed so as not to output an alarm even if a microwave is detected in the state of approaching the stored position. .

  Furthermore, the alarm control in the alarm unit 8 is performed independently when the microwave detector body 12 detects the microwave as described above and when the target is detected based on the position information. Alternatively, each detection result may be comprehensively determined and a final output may be performed.

  As an example, the type of speed monitoring device is stored and held as target installation information, and the type of speed monitoring device that is a target close to the position of the vehicle when a microwave is detected is notified. To do. In addition, information on whether or not the target emits microwaves is stored and held as target installation information. And when the target which emits a microwave is detected based on positional information, the kind of alarm can be changed by whether the microwave detector main body 12 actually received the microwave. In other words, when both are received, an alarm such as a normal alarm is given, and when the microwave is not received, the LED is turned on or “There is a speed monitoring device but the microwave is not received. Or the like may be output. Further, in such a case (microwave non-reception), the alarm itself can be prevented. Thereby, necessary information can be obtained without issuing a useless alarm to the speed monitoring device which is not operating.

  Furthermore, another algorithm for comprehensively judging the detection result when the target is detected based on the detection signal from the microwave detector main body 12 and the position information is as follows.

  That is, a signal intensity detection unit for obtaining the signal intensity of the reception signal in the microwave detector main body 12 is provided. When the microwave is detected, it is determined whether or not the signal intensity (S meter output) is equal to or higher than the threshold value. In some cases, an alarm is issued on the condition that the presence of a target (one that emits a microwave) is detected based on position information.

  That is, when such a target does not exist, the detected microwave is presumed to be emitted from noise or other non-detection target and no warning is given or a minor warning is given. On the other hand, even if the signal strength of the received signal is small, if the target is present in the surroundings, it can be estimated that the microwave is from the target, so that a normal alarm is given.

  In addition, the target detection process based on the position information may not be performed during a temporary stop when the GPS detection unit 3 is intermittently driven or when a microwave is received due to the surrounding environment. In such a case, in the case of the algorithm using the signal strength, when the signal strength is small, the determination result as to whether or not there is a target object based on the acquisition of the position information accompanying the subsequent operation of the GPS detection unit 3 is Until the alarm is issued, the generation of the alarm is suspended, and the above control (with target → alarm, without target → no alarm) is performed based on the determination result. Of course, when the signal intensity is equal to or higher than the threshold value, the alarm is performed as described above.

  Normally, when an intermittent operation or the like is performed, when a target is detected, the stop period is shortened or the operation is switched to a continuous operation. Therefore, when microwaves with low signal intensity are received during the stop period, there are many cases of microwaves from a malfunctioning source or a speed monitoring device installed on a road other than the running road. However, priority was given to the prevention of false alarms.

  Further, the alarm unit 8 can issue an alarm only when the installation information of the target object close to the position of the vehicle when the microwave detector body 12 detects the microwave has a predetermined content. In other words, when the installation information is a malfunction source, it is possible to limit the malfunction of the microwave detector or to notify the driver of a false alarm by not issuing an alarm or notifying that it is a malfunction source. It can be recognized.

  In addition, since another structure and an effect are the same as that of each above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted. In the illustrated example, the example in which the first embodiment of the in-vehicle target detection apparatus is incorporated has been described. However, as described above (using the installation information), various implementations of the in-vehicle target are performed. Forms can be applied.

  FIG. 8 shows a main configuration of the second embodiment of the microwave detector according to the present invention. In the present embodiment, the on-vehicle target detection device shown in FIG. 2 is incorporated. As a premise, in this embodiment, it is operated by a solar cell and a secondary battery. Therefore, in order to save power, the intermittent control unit 14 is provided to operate the GPS detection unit 3 intermittently.

  Furthermore, as shown in the figure, the target information temporary storage unit 15 is provided, the installation information about the target detected by the detection unit 5 is read from the installation information storage unit 4a, and the read installation information is used as the target information. The physical information is stored in the temporary storage unit 15. The alarm unit 8 controls the alarm based on the installation information stored in the target information temporary storage unit 15 when a desired microwave is detected by the microwave detector body 12. Specific alarm control is the same as that described in the embodiment of the in-vehicle target detection means.

  That is, it is assumed that when the microwave detector body 12 detects a microwave, the alarm is controlled using the installation information. Then, if the GPS detection unit 3 is temporarily stopped at the time of microwave detection, the GPS detection unit 3 must then be operated, and time is required for re-acquisition of satellites, etc. Is expensive. If this happens, an appropriate alarm cannot be implemented.

  Therefore, the target information temporary storage unit 15 stores and holds the target installation information within a certain distance obtained during operation of the GPS detection unit 3 as in this embodiment, and the microwave is detected. Then, by performing control based on the stored installation information, an appropriate alarm can be issued in the same manner as when the position detection operation is in operation.

  Although described in the case of the intermittent operation, the position information cannot always be obtained in the tunnel or the surrounding environment even in the case of the normal operation.

  In addition, since another structure and an effect are the same as that of each above-mentioned embodiment, the same code | symbol is attached | subjected to a corresponding member and the detailed description is abbreviate | omitted. In the illustrated example, the second embodiment of the in-vehicle target detection apparatus is incorporated. However, various embodiments of the in-vehicle target can be applied.

  Furthermore, the facility information stored in the target temporary storage means may be deleted at a predetermined timing. The predetermined timing is erased when the vehicle disappears at a predetermined distance from the target. Thereby, it can prevent issuing erroneous information.

  Furthermore, also in the present embodiment, alarm control based on signal strength can be performed as in the first embodiment described above. That is, when a microwave having a signal intensity smaller than the threshold value is received, the alarm can be controlled based on information stored in the target information temporary storage unit 15.

  When the microwave detector body 12 detects the microwave and the installation information is not stored in the target information temporary storage unit 15, the target is detected during the previous operation of the GPS detection unit 3. If it is not detected or the current position information is being calculated or the target is being detected, for example, if the signal strength is below a certain level, the urgency is low, Waiting for the target detection process based on the acquisition of position information, and confirming that there is a target that emits microwaves in the surroundings, it is possible to perform an alarm process (if the target is not detected) Do not alarm or reduce alarms). Of course, when the signal strength is high, there is an urgency, and an alarm is output immediately.

  As described above, when the microwave is detected during the temporary stop when the installation information is not stored in the target temporary storage unit 15, the intermittent control unit 14 operates the GPS detection unit 3, It is good to control so that acquisition of position information is attempted. Of course, it is not hindered to repeat periodic intermittent driving.

1 is a block diagram showing a first embodiment of an in-vehicle target detection device mounted on a microwave detector according to the present invention. It is a block diagram which shows 2nd Embodiment of the vehicle-mounted target object detection apparatus mounted in the microwave detector which concerns on this invention. It is a figure explaining operation | movement of 2nd Embodiment. It is a block diagram which shows 3rd Embodiment of the vehicle-mounted target detection apparatus mounted in the microwave detector which concerns on this invention. It is a block diagram which shows 4th Embodiment of the vehicle-mounted target detection apparatus mounted in the microwave detector which concerns on this invention. It is a block diagram which shows 5th Embodiment of the vehicle-mounted target detection apparatus mounted in the microwave detector which concerns on this invention. It is a block diagram which shows 1st Embodiment of the microwave detector which concerns on this invention. It is a block diagram which shows 2nd Embodiment of the microwave detector which concerns on this invention.

Explanation of symbols

3 GPS detector (position detection means)
4 Position storage section 4a Installation information storage section 5 Detection section 6 Position displacement storage section 7 Approach determination section 8 Alarm section 9 Departure determination section 10 Relationship determination section 11 Selection switch 12 Microwave detector body 14 Intermittent control section 15 Target information temporary Memory

Claims (5)

A microwave detector main body for detecting a desired microwave;
Means for alarming when a microwave is detected by the microwave detector body;
Position detecting means;
Position storage means for storing the position of the target;
Position displacement storage means for recording displacement of the position of the vehicle;
Detection means for outputting a detection signal when a distance from the position detection means and the position storage means to the target is within a predetermined range;
A microwave detector comprising an alarm means for alarming the presence of a target,
When the position information detected by the position detection means is at a predetermined distance from the target, an alarm content temporary storage means for storing the setting information of the target is provided.
When the microwave detector detects a microwave, the microwave detector controls an alarm based on installation information stored in the alarm content temporary storage means.   2. The microwave detector according to claim 1, wherein the alarm content stored in the alarm content temporary storage means is deleted based on the output of the detection means.   3. The microwave detection according to claim 1, wherein the alarm unit controls an alarm based on an output of the microwave detector main body and installation information of a target close to a position of the vehicle. vessel. The alarm means controls the alarm so that the alarm is issued only when the setting information of the target object close to the position of the vehicle when the microwave detector detects the microwave has a predetermined content. The microwave detector according to claim 3. The microwave detector main body is provided with signal intensity detection means for detecting the signal intensity of the received signal,
5. The apparatus according to claim 1, wherein when the signal intensity is smaller than a threshold value, a normal alarm is issued on the condition that a target that emits a microwave is detected based on position information. The microwave detector according to any one of claims.

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