JP4767756B2 - Microwave detector - Google Patents

Description

  The present invention relates to a microwave detector.

  There is known a microwave detector that detects and notifies a microwave transmitted from a vehicle speed measuring device. This microwave detector recognizes the reception of microwaves from the vehicle speed measurement device even when it receives microwaves sent from a malfunctioning source such as an automatic door of a convenience store using the same frequency as the speed measurement device. As a result, there is a problem that an unnecessary alarm is issued. In view of such circumstances, recent microwave detectors store the position information of malfunction sources, recognize the position of the vehicle by GPS, and detect the microwave when the vehicle is located at the malfunction source. Also, it is possible to prevent unnecessary alarms from being issued by controlling so as not to generate alarms.

There is an invention disclosed in Patent Document 1 that automatically stores position information of malfunction sources. The present invention pre-registers position information of a fixed speed measuring device installed on the side of a road, etc., and issues a warning when receiving a microwave of a predetermined frequency band, and a position where the microwave is received Information is acquired and it is judged whether it is the reception of the microwave from the fixed speed measuring device registered beforehand. If the microwave is not received from the fixed speed measuring device, the location where the microwave is received is stored as the malfunction source position information, and an alarm is issued when the microwave is received next when passing through the same location. By not doing so, the location information of the malfunction source is automatically registered. Further, when the microwave is not received at the location of the stored malfunction source position information, the location stored previously as the malfunction source position information erases the malfunction source position information stored as not being a malfunction source. . This can be considered that microwaves sent from malfunctioning sources such as automatic doors are always sent, whereas microwaves from mobile vehicle speed measuring devices are not always output. Because.

  On the other hand, recent microwave detectors are equipped with a receiver that can receive various frequency bands in addition to the microwave frequency band transmitted from the vehicle speed measuring device, and various GPS position information. Notification can be performed. However, when all the functions are working, there is a drawback in that unnecessary notification that the position has already been learned is performed on a daily commute.

  Therefore, recent microwave detectors can individually turn on / off the notification function, and the function can be turned off according to the use situation. In addition, an ON / OFF combination for each notification function is registered as one operation mode, and an optimum operation state can be manually selected by switching a plurality of operation modes with a simple button operation.

Furthermore, by registering the location using the GPS location information in the center where you want to make it a familiar action area in advance and setting the radius that will be the action range, the operation mode is automatically selected according to the position of the vehicle after that There is also.
JP 2006-46976 A

  The conventional microwave detector described above has the following problems. In the case of the invention disclosed in Patent Document 1, there are many malfunctioning sources such as automatic doors in stores, and microwaves are not emitted when it is out of business hours, so microwaves cannot be received and positions registered as malfunctioning sources are deleted. End up. Furthermore, as the number of malfunction sources to be registered increases, a larger storage capacity is required.

  In the case of the latter invention, when the user's action range is not centered on the home, registration of the familiar action area needs to move to a position that the user wants to center and press the registration button. Furthermore, when the user's action range is constantly changing, the user needs to re-register familiar action areas each time the action range is different. Furthermore, since the conventional familiar action area is a circle with a specified radius centered on a uniformly registered point, there are a mixture of areas that you want to be familiar and areas that you do not want to be familiar. Sometimes.

  It is an object of the present invention to provide a microwave detector that can easily set a familiar action area and that can be updated according to the use situation of a user.

In order to achieve the above-described object, a microwave detector according to the present invention includes a position detection unit that detects a position of a host vehicle, a microwave detection unit that detects a predetermined microwave, and a microwave detection unit. A microwave reception notifying means for notifying that a predetermined microwave has been received based on an output; an operation determining means for determining presence / absence of an operation of means including the microwave detecting means; an output of the operation determining means; Based on the output of the position detection means, a reference position determination means for determining a plurality of reference points, a reference point storage section for storing a plurality of reference points determined by the reference position determination means, and detected by the position detection means Local area determination means for determining whether or not a current position of the vehicle exists in a local area set based on the plurality of reference points; and the local area determination means A microwave receiving notification control means for controlling said microwave receiver informing means or / and the microwave detecting means from the output, those comprising assume. The reference position determination means stores at least one of the position information acquired when the determination result of the operation determination means is active and the position information acquired when the operation is not The plurality of reference points are determined from the stored number of .
Alternatively, based on the above premise, the reference position determination unit may include at least one of position information acquired when the determination result of the operation determination unit indicates that there is an operation and position information acquired when there is no operation. Can be stored in association with the position information for the same position in association with the accumulated time from the absence of movement at that position to the presence of movement, and the plurality of reference points can be determined from the accumulated time.

  The situation of familiar action areas (local areas) is usually known by the driver, and there is often no need to output an alarm or there is no problem even if the number of alarms is reduced. Therefore, the range of daily activities such as a commuting area is determined by using a plurality of points where the vehicle is parked, and a familiar action area is determined from these points. Control was made to suppress the notification operation. The suppression of the normal notification operation includes both a case where notification is not performed and a case where different notification is performed. Different notifications include changing the notification means itself (sound and lamp, etc.), changing the level without changing the notification means (changing the volume of the sound, changing the color / number of the lamps to be emitted, etc.), etc. There is. The present invention also includes a case in which the notification operation at the normal time is suppressed as a result of not performing the detection operation itself or changing the sensitivity at the time of detection.

  Here, in the present invention, a plurality of reference points are used in the present invention as reference points for determining whether or not they are in the local area, and the determination result of the operation determining means is used for the plurality of reference points. It was decided based on the position information acquired when it became or the position information acquired when there was no action.

  The presence / absence of the operation can be determined, for example, by detecting ON / OFF of the power source. This is because the operation becomes possible by supplying power. When the driving power of the microwave detector is taken from a cigar socket or the like of the automobile, the power is turned on when the engine is started (more specifically, when the accessory switch is turned on), and the power is turned off when the engine is stopped. Also, when the drive power supply is independent of the automobile, such as a solar battery, a vibration sensor is usually installed to turn off the power while the vehicle is stopped in order to avoid battery capacity consumption. Control is performed to turn on the power supply when it is detected, and to turn off the power supply when it no longer vibrates.

  Therefore, if the operation changes from “Yes” to “No”, it can be estimated that the vehicle is parked, and if the operation changes from “No” to “Yes”, the parked vehicle moves with the engine running. Then it can be estimated. Therefore, the position information of the vehicle at the time of the change can be regarded as a position where the vehicle is parked, and is often a parking lot at home or the like in many cases. Also, when used for commuting, it is often a home parking lot or a company parking lot. In this way, the parking area is not limited to a home / company parking lot, but corresponds to a user's action area in addition to a frequently-used store / inn parking lot. As a result, the reference point is determined based on the position information when the operation is changed to “Yes” / “No”, and the local area is set based on the reference point. Can be set in the area.

In the present invention, the determination result of the operation determination means stores the position information acquired when there is an operation and the position information acquired when there is no operation, and the number of stored position information for the same position, Since multiple reference points are determined based on the length of accumulated time until the judgment result at the same position changes from no action to action, It is possible to prevent the action area from changing. When the familiar action area changes, the local area is updated / set based on the new familiar action area.

  When the history information is generated, if there is motion again / within a certain narrow area centered on the motion presence / absence position information, the position of motion presence / absence at the beginning of storage It is better to consider them the same. The position information stored at that time may be the one stored first (same as in the embodiment), updated to the last detected one, or the position calculated based on both position information (for example, the intermediate point) Etc.) can be used.

  The local area determination unit may calculate a predetermined range (local area) from at least two pieces of position information stored in the reference point storage unit. The local area may be an area including one reference point or an area including a plurality of reference points. If the region includes a plurality of reference points, a region including a route moving between the plurality of reference points can be set as the local area. For example, if the two reference points are home and office parking locations, it can be estimated that the user is using a car for commuting. And the user knows not only the surroundings of each reference point but also the situation of the commuting passage, and there are many cases where an alarm is unnecessary. In such a case, an area including a plurality of reference points may be set.

  Various methods can be used for setting a specific area. For example, a distance between a plurality of reference points is calculated, and a familiar action area can be determined from the calculated value. As an example of the calculation algorithm, as shown in the embodiment, an area having a smaller sum of the distance between the vehicle position and the two points than that value is set as a local area by multiplying the distance between the two points by a certain numerical value. it can. Of course, other than this, for example, an area separated by a certain distance from a virtual line connecting two points, or any other form can be adopted. However, if the method shown in the embodiment is adopted, it is possible to determine whether or not the microwave detector having no map information belongs to the local area by a simple arithmetic processing.

  Furthermore, on the premise of each of the above inventions, a warning means based on the position information of the vehicle, and a warning based on the position information when the local area determination means determines that the current position is within the local area It is advisable to provide means for suppressing the above.

  In the present invention, it is possible to easily set a familiar action area and update it according to the usage status of the user.

  FIG. 1 shows a preferred embodiment of the present invention. The microwave detector according to the present embodiment includes a microwave detection unit 10 that issues an alarm upon reception of a microwave, a GPS reception unit 20 that obtains position information when the microwave is received, and a vehicle within a predetermined range. The local area notification control unit 30 that controls the operation of the microwave detector when the signal exists, and the operation determination unit 40 that determines the operation state of the microwave detector itself or the microwave detection unit 10.

  The microwave detection unit 10 includes an antenna 11 and a microwave receiver 12 for receiving a microwave, a microwave reception determination unit 13 that detects a predetermined microwave from a signal received by the microwave receiver 12, and a predetermined And a microwave reception notifying unit 14 for notifying that when the microwave is detected.

  The GPS receiving unit 20 includes a GPS antenna 21 and a GPS receiver 22 for receiving a GPS signal, and a position information detecting unit 23 that extracts position information indicating the position of the own vehicle from the signal received from the GPS receiver 22. Prepare.

  The operation determination unit 40 determines whether or not the microwave detection unit 10 or the present apparatus (microwave detector) is operating. Specifically, when the power of the apparatus is taken from ACC, it is determined that the apparatus is operating when the power of the apparatus is turned on. Another method is to use a vibration sensor so that the device is turned on when a predetermined vibration is occurring, and whether the device is still operating by determining the state of the vibration sensor or the resulting power state. Can be determined.

  The local area notification control unit 30 includes a notification control unit 31, a local area determination unit 32, a reference point storage unit 33, and a reference position determination unit 34. The reference position determination unit 34 determines at least two reference points based on the output of the motion determination unit 40 and the output of the position detection unit 23. Specifically, as shown in FIG. 2, the reference position determination unit 34 is stored in the acquisition position storage unit 34 a that stores the latest (final) position information from the position information detection unit 23 and the acquisition position storage unit 34 a. Based on the obtained position information, a position information acquisition history is generated, and a plurality (two in this embodiment) of reference points are obtained from the history state and stored in the reference point storage unit 33. And a history information storage unit 34c.

  The history information storage unit 34c includes a plurality of position storage units L1, L2, and L3 and counters C1, C2, and C3 that are linked to the respective position storage units. The number of these position storage units and counters need only be larger than the number of reference points. In this embodiment, the number is three, which is one more, but may be four or more. If the number of reference points is 3 or more, the number of position storage units is increased accordingly.

  The function of each processing unit will be described while explaining the operation of the reference point storage control unit 34b. FIG. 3 shows an outline of the operation. Here, three position storage units L1, L2, and L3 are prepared, and counters C1, C2, and C3 that are linked to the respective position storage units are prepared.

  When the reference point storage control unit 34b recognizes that the operation has started from the output of the operation determination unit 40, the reference point storage control unit 34b acquires the current position information stored in the acquisition position storage unit 34a, and the acquired position is the position storage unit L1, It is determined whether or not it falls within a predetermined range (narrow area) centered on the position information stored in L2 and L3. In the present embodiment, since the predetermined range (narrow area) is a circle having a radius of a certain distance (for example, 100 m), the distance between the acquired position and the position stored in each position storage unit L1, L2, L3 is Judgment can be made based on whether the distance is equal to or less than a certain distance (eg, 100 m).

  Then, when there is a position storage unit that falls within the narrow area, the reference point storage control unit 34b adds +1 to the counter value of the counter associated with the position storage unit, and if there is no corresponding position storage unit, The smallest position storage unit is switched with the acquired position information, and the counter value of the corresponding counter is set to 1 (S1). In addition, although it is the positional information acquired in response to the output of the operation determination unit 40, since the GPS receiving unit cannot immediately detect the positional information, the acquired positional information storage unit 34a has acquired the last before the power is turned off. Location information may be stored. However, in this case as well, since the position of the vehicle does not usually change while the vehicle is stopped, it can be regarded as the same position as when the power is turned on.

  Further, the reference point storage control unit 34b accesses the counters C1, C2, and C3 of the history information storage unit 34c to compare the counter values of the counters, and adopts the upper two points with the larger counter values as reference points. It stores in the point memory | storage part 33 (S2). In the initial state, no information is included in the position storage unit, so the position information is written in order from L1.

In the present embodiment, apart from providing a reference point storage unit 33 and the history information storage unit 34c, but so as to store a reference point therein, the present invention is not limited to this, I shared both, For storing the reference position, the position storage unit may be sorted by the counter value, and the position information stored in the upper two position storage units may be used.

  A specific operation will be described with reference to FIGS. As a premise, as shown in FIG. 4, three points (point A, point B, point C) are stored in the position storage units L1, L2, L3 of the history information storage unit, and the respective counter values are shown in FIG. As shown in a), it shall be 5 times, 3 times, and 2 times. In this state, assuming that the position information acquired upon detection of the next operation start is the point A1 in FIG. 4, the point A1 is the same as the point A because it is a narrow area of the point A already registered. It is considered. Therefore, the reference point storage control unit 34b increments the point A counter by one. As a result, the history state of the history information storage unit 34c before processing becomes a state in which the counter value at point A is incremented by one as shown in FIG. 5B. As a result, the reference point storage control unit 34b employs points A and B having a large counter value as reference points of the local area.

  Next, it is assumed that the position information acquired upon detection of the next operation start is a point D in FIG. Then, the reference point storage control unit 34b recognizes that the acquired position information is not included in the narrow area of the position information of any position storage unit, and adds new position information to the position storage unit L3 with the smallest counter value. (D point in this case) is written and the counter value of the counter C3 is set to 1 (see FIGS. 6A and 6B). Then, the reference point storage control unit 34b employs points A and B having a large counter value as reference points of the local area. By performing such an update process, it is possible to cope with a change in behavior pattern within a limited memory range.

  In the above-described embodiment, the operation determination unit 40 performs the operation start output when the power is turned on. However, the present invention is not limited to this, and the above-described processing may be performed when the power is turned off. In particular, in consideration of the fact that the GPS receiving unit may not be able to operate immediately when the power is turned on, the GPS receiving unit may execute the processing with the power being turned off as a trigger. Furthermore, for example, when the parking position is a place where GPS radio waves cannot be received, such as an underground parking lot, a situation occurs in which the GPS receiver cannot receive GPS radio waves when the power is turned off. This is the same when the power is turned on. However, the position information based on the GPS radio wave received last time is stored in the acquisition position storage unit 34a, and the reference point position control unit 34b uses the position information stored in the acquisition position storage unit 34a as the current vehicle position. There is no problem because it is judged and processed. In other words, in the present embodiment, the reference point is set based on the position information stored last with reference to the time when the power is turned ON / OFF.

  Also, since the positional information is equivalent when the power is turned on and off, both may be used as triggers for starting the processing. When such a configuration is adopted, a local area is set if at least one commute is performed.

  Further, the reference point storage control unit 34b may have a function of decrementing the counter values of all the position storage units every predetermined period (see FIGS. 7 and 8). When such a function is provided, even when the reference point set by commuting or the like changes due to a change in work place or the like, it is possible to replace the stored content with the state changed at a relatively early time.

  In the local area determination unit 32, the current position of the vehicle acquired from the position information detection unit 23 is set based on a plurality of (two in this embodiment) reference points stored in the reference point storage unit 33. It is determined whether or not it exists in the area. That is, in the past, the local area was set based on one point, but in the present embodiment, the local area is set based on two reference points.

  Specifically, as shown in FIG. 9, when there are two reference points (point A, point B), an area defined by a line connecting points D satisfying the following conditions is defined as a local area. That is, the sum of the distance (L2) between the points D and A and the distance (L3) between the points D and B is equal to the value obtained by multiplying the distance (L1) between the two points A and B by a certain numerical value. Let the point drawn to be point D. The locus of the point D that satisfies this condition is an ellipse as shown in the figure. Therefore, in FIG. 9, for example, when the vehicle is at point C, it can be determined that it is a familiar action area (local area) because it is within the locus drawn by point D.

When the value multiplied by the distance between the two points A and B is 1.5,
(L2 ′ + L3 ′) <(1.5 * L1)
When satisfying, it can be determined that it is a familiar action area. This determination result is given to the notification control unit 31.

  In other words, when the distance between the two reference points (L1) is multiplied by a certain value and the sum of the distance between the vehicle position and each reference point is less than that value, the vehicle is in a familiar action area ( Can be determined to be in the local area.

  When the notification control unit 31 receives a determination result indicating that it is currently in the local area from the local area determination unit 32, the notification control unit 31 sends a control signal for suppressing a normal alarm to the microwave reception notification unit 14.

  In the present embodiment, the notification control unit 31 is configured to mute the notification sound from the microwave reception notification unit 14 as normal alarm suppression. However, the present invention is not limited to this, and for example, the display portion The reception display may not be performed, or the display content may be indicated as a malfunction source. Furthermore, the alarm sound is not muted, but can be set as appropriate in addition to changing the timbre or changing the content of speech synthesis. Furthermore, not the change of the output mode of the microwave reception notification unit 14, but the reception sensitivity of the microwave reception determination unit 13 is appropriately reduced so that the microwave from the malfunction source cannot be received or the detection operation itself is not performed. As a result, the notification operation at the normal time may be suppressed as a result.

  In the above-described embodiment, two reference points are set. However, as shown in FIG. 10, three reference points may be provided. In this case, the number of position storage units may be increased to use the upper three data. In this case, the third point (E) may be paired with one of the two points, and an ellipse is drawn in the same manner as in the case of the two points, and the inside of the two ellipses may be set as the local area. Of course, four or more reference points may be used.

  Further, instead of the counter value stored in correspondence with the position storage unit, the elapsed time until the state of the motion determination unit changes is stored in correspondence with the position information, and two points with long accumulation of time information are used as reference points. You may make it do.

  For example, if the vehicle usage status is commuting and going out on a trip once a month, for example, the total amount of time in the parked state after arriving at the office until leaving the office, and returning home What is necessary is just to memorize | store the integration | accumulation of the time which is in the parking state after going to work, and the integration | accumulation of the time which is parked at a lodging place for a travel for every positional information, and makes two long time a reference point.

  Further, in the present invention, although not specifically illustrated, if the means for issuing a warning based on the position information of the own vehicle and the local area determination means determine that the current position is within the local area, the position information Means may be further provided to suppress the warning based on. As an alarm based on the position information of the own vehicle, for example, there is one that notifies the existence of a speed measuring device. In this case, the velocity measuring device may be only a type that does not emit microwaves, or may include one that emits microwaves. Further, as the information to be notified, information other than the speed measuring device may be used, for example, information indicating the presence of the number reading device of the license plate of the vehicle may be used, and various other types of information can be notified.

  The means for giving an alarm based on the position information of the own vehicle includes a database for storing position information and notification contents of a notification object such as a speed measuring device and a number reading device, and a position detection means for detecting the current position of the own vehicle. And means for determining whether or not it is necessary to notify from the current position detected by the position detecting means and the position information of the notification object stored in the database, and notification means for notifying when necessary. This can be achieved.

  The position detection means can also be used as the GPS receiver 20. The local determination means and the means for suppressing the alarm can also be used as the local area notification control unit 30.

It is a figure which shows suitable one Embodiment of this invention. It is a figure which shows the internal structure of a reference position determination part. It is a figure explaining the function of a reference position judgment part. It is a figure explaining the function of a reference position judgment part. It is a figure explaining the function of a reference position judgment part. It is a figure explaining the function of a reference position judgment part. It is a figure explaining the function of a reference position judgment part. It is a figure explaining the function of a reference position judgment part. It is a figure explaining a local area. It is a figure explaining a local area.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Microwave detection part 11 Antenna 12 Microwave receiver 13 Microwave reception determination part 14 Microwave reception alerting | reporting part 20 GPS receiving part 21 GPS antenna 22 GPS receiver 23 Position detection part 30 Local area alerting control part 31 Alerting control part 32 Local area determination unit 33 Reference point storage unit 34 Reference position determination unit 40 Operation determination unit

Claims (4)

Position detecting means for detecting the position of the own vehicle;
Microwave detection means for detecting a predetermined microwave;
Microwave reception notification means for notifying that a predetermined microwave has been received based on the output of the microwave detection means;
Operation determining means for determining presence or absence of operation of the means including the microwave detecting means;
Reference position determination means for determining a plurality of reference points based on the output of the operation determination means and the output of the position detection means;
A reference point storage unit that stores a plurality of reference points determined by the reference position determination means;
Local area determination means for determining whether or not a current position of the vehicle detected by the position detection means exists in a local area set based on the plurality of reference points;
A microwave reception notification control means for controlling the microwave reception notification means or / and the microwave detection means from the output of the local area determination means,
The reference position determination unit stores at least one of the position information acquired when the determination result of the operation determination unit is active and the position information acquired when the operation is not performed. The microwave detector, wherein the plurality of reference points are determined from the stored number of . Position detecting means for detecting the position of the own vehicle;
Microwave detection means for detecting a predetermined microwave;
Microwave reception notification means for notifying that a predetermined microwave has been received based on the output of the microwave detection means;
Operation determining means for determining presence or absence of operation of the means including the microwave detecting means;
Reference position determination means for determining a plurality of reference points based on the output of the operation determination means and the output of the position detection means;
A reference point storage unit that stores a plurality of reference points determined by the reference position determination means;
Local area determination means for determining whether or not a current position of the vehicle detected by the position detection means exists in a local area set based on the plurality of reference points;
A microwave reception notification control means for controlling the microwave reception notification means or / and the microwave detection means from the output of the local area determination means,
The reference position determination unit stores at least one of the position information acquired when the determination result of the operation determination unit is active and the position information acquired when the operation is not performed. The microwave detector is characterized in that the position information on the position is stored in association with an accumulated time from the absence of movement at the position to the presence of movement, and the plurality of reference points are determined from the accumulated time. 3. The microwave detector according to claim 1, wherein the local area determination unit calculates a predetermined range from at least two pieces of position information stored in the reference point storage unit. Means for issuing a warning based on the position information of the vehicle;
The said local area determination means is provided with the means to suppress the warning based on the said positional information, when it determines with the present position being in a local area, The any one of Claim 1 to 3 characterized by the above-mentioned. Microwave detector.

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