JP5284765B2 - Open / close detection device - Google Patents

Description

The present invention, the opening and closing state of the crescent lock provided on a window or a window about you detect open closed detection device using a magnetic sensing element such as a Hall sensor.

2. Description of the Related Art Conventionally, there is known a wireless window opening / closing detection device that detects opening / closing of a window as a monitoring target and wirelessly transmits the alarm to a monitoring panel. In such a window opening and closing detecting device detects the magnetic force of the magnet arranged on the window glass by the magnetic sensing element, the radio transmission to the alarm panel abnormality detection signal determines that the window opens when the detected magnetic force drops Alarm. Also, when the magnetic force of the magnet placed on the open / close lever of the crescent lock provided on the window to be monitored is detected by another magnetic detection element, and the detection magnetic force decreases due to the opening / closing lever being released and the magnet moving away from the magnetic detection element Therefore, it is determined that the crescent lock is released, and an abnormality detection signal is wirelessly transmitted to the alarm panel to give an alarm.

The magnetic detection elements used in conventional window open / close detection devices mainly use reed switches that mechanically turn contacts on and off according to the strength of the magnetic force, but in recent years, the Hall effect has been used. Therefore, it has been studied to employ a Hall sensor that detects magnetic force.

  When the Hall sensor is used as a magnetic sensing element, the closer to the magnet to be detected, the stronger the magnetic force that passes through the Hall sensor, the higher the sensor output.

However, when the magnetic force of the magnet provided on the open / close lever of the crescent lock is detected by the hall sensor, the window open / close detection device installed in the vertical frame of the window does not hinder the operation of the open / close lever of the crescent lock, for example, It is necessary to install it about 30 mm away from the tip of the opening / closing lever in the locked position.

  When the position of the magnet with respect to the window open / close detection device is separated as described above, the magnetic force is attenuated in proportion to the square of the distance, so that the magnetic force passing through the Hall sensor arranged in the device is reduced and sufficient detection is achieved. No output can be obtained.

  In order to solve this problem, the inventor of the present application arranges a conical magnetic collector on the front surface of the Hall sensor so as to increase the detection output through sufficient magnetic force to the Hall sensor even if the distance from the magnet increases. Has been proposed (Japanese Patent Application No. 2008-278878).

  The window open / close detection device is driven by a battery, and since the window open / close detection device is attached to the vertical frame on the side of the window, the window open / close detection device is vertically long, and the Hall sensor is disposed on the lower end side opposite to the crescent lock. The battery is stored on the upper side.

  In addition, in order to monitor the crescent lock by the window open / close detection device, the crescent lock open / close lever is set to the lock position and the magnetic force level detected by the Hall sensor in the state where the magnet is close to the minimum distance is initially registered. A determination threshold value for determining locking and unlocking is set based on the initially registered magnetic force level.

Such initial registration of the magnetic force level may be performed by placing the magnet at the minimum distance in the locked state assumed for the crescent lock at the final stage of the manufacturing process, and initially shipping the magnetic force level.

JP 2003-281636 A Japanese Patent Laid-Open No. 2001-14990

  However, there is the following problem when the magnetic force level is initially registered at the final stage of the manufacturing process.

  First, there are various types of crescent locks provided on the windows that are actually installed. Initially register the magnetic force level assuming the minimum distance from the magnet provided on the open / close lever when the crescent lock is uniquely locked. However, the magnetic force level when actually installed may differ greatly, and there is a possibility that an appropriate determination threshold value cannot be set.

  In addition, the Hall sensor that detects the magnetic force level of the magnet provided on the open / close lever of the crescent lock outputs a magnetic force level detection signal proportional to the magnetic flux passing through the sensor by applying a constant power supply voltage, for example. Even if the strength of the magnetic flux is the same, when the power supply voltage fluctuates, a different magnetic force level detection signal is output.

  On the other hand, the window open / close detection device operates using a battery as a power source, and providing a low-voltage circuit or a constant current circuit for driving the Hall sensor increases the cost by increasing the circuit configuration and increases the current consumption. The battery voltage is supplied directly. For this reason, when the magnet position corresponding to the closed state of the crescent lock is set and the magnetic force level is initially registered, the current consumption increases when the wireless transmission circuit, the LED driving circuit, etc. provided in the window opening / closing detection device operate. As a result, the battery voltage fluctuates, the magnetic force level detected by the Hall sensor also fluctuates, and the initial registration of the correct magnetic force level may not be possible.

  In particular, when a lithium battery is used as the battery, if the battery temperature decreases, the internal resistance of the battery increases, the battery voltage decreases significantly with increasing current consumption, and the magnetic force level detected by the Hall sensor. There is a risk that a determination threshold for determining unlocking and locking based on the initially registered magnetic force level is set to an inappropriate level.

The present invention is easily and reliably at the installation site, and to provide a real window opening closing detecting device you allow accurate initial registration of magnetic force level corresponding to the installation conditions.

The present invention, in the to that opening-closing detecting device monitors the state of the monitored object,
A magnet placed on the monitored object;
An apparatus main body including a magnetic detection element and a processing circuit unit for detecting a magnetic force level of the magnet ;
A registration operation part provided in instrumentation Okimoto body,
A battery provided in the apparatus body;
With
In the processing circuit section,
And redo operation by the registration operation unit, and a registration processing unit that sets the determination threshold for detecting the open or closed state of the monitored object based on the magnetic force levels the acquired acquires the force level detected by the magnetic sensing element,
And power stabilization timing setting unit which acquires magnetic force level detected by determination to magnetic sensing element to stop the timing of the circuit operation to vary the power supply voltage supplied from the battery to the registration processing unit,
And to that monitoring unit determines the opening and closing states of the monitored object by comparison with the magnetic force level detected by the magnetic sensing element and the determination threshold,
It is provided with.

Here, as a circuit for changing the power supply voltage,
A wireless transmission unit for transmitting the monitoring state of the monitoring unit to the outside;
A display unit for displaying a registration status of the registration processing unit;
With
The power supply stabilization timing setting unit determines at least the timing at which the operations of the wireless transmission unit and the display unit are stopped, and causes the registration processing unit to acquire the magnetic force level detected by the magnetic detection element.

The registration processing unit, when you start the operation by the operation of the registration operation unit, and blinking Table radical 113,
Power stabilization timing setting section, to acquire the registration processing unit magnetic force level detected by the magnetic sensing element display and operation of the radio transmitting unit in the stop timing to determine the timing is stopped at the flashing operation table radical 113.

The power supply stabilization timing setting unit can stop the circuit operation that varies the power supply voltage, and causes the registration processing unit to acquire the magnetic force level detected by the magnetic detection element while the circuit operation is stopped. Also good. The magnetic sensing element is a Hall sensor.

According to the present invention, when the registration process according to a predetermined procedure when it is installed on a window of the open-close detecting device location, the opening and closing of the opening and closing lever Crescent lock is monitored object in a state of operating in the locking position The magnetic force level of the magnet provided in the lever is detected by the Hall sensor, which is a magnetic detection element, and is initially registered, and an appropriate determination threshold can be set based on the initially registered magnetic force level.

When initially registering the magnetic force level, the wireless transmitter transmits the magnetic force level detected by the Hall sensor, which is a magnetic detection element, by determining the timing at which the operation of the wireless transmitter and display unit is stopped. The timing at which the battery voltage drops and fluctuates due to an increase in the current consumption due to the operation of the display unit can be removed, and the magnetic force level detected by the Hall sensor can be taken in at the timing when the battery voltage is stable and registered for initial registration. The initial registration of the magnetic force level that caused an error due to the fluctuation of the battery voltage is surely avoided, and the correct magnetic force level is initially registered, so that the determination threshold for locking monitoring set based on this is set to an appropriate level. be able to.

  FIG. 1 is an explanatory view showing an installation state of a window opening / closing detection device according to the present invention. In FIG. 1, a window opening / closing detection device 10 of the present invention is fixed to a vertical frame of window sashes 12a and 12b to be monitored by double-sided tape or screws. On the upper side of the window opening / closing detection device 10, the window sash 12a, 12b is closed, and a window opening / closing detection magnet 14 is affixed to the opposite position with double-sided tape. It is detected by a hall sensor as a detection element.

  When the window sash 12a, 12b is opened, the magnetic force is reduced by the window opening / closing detection magnet 14 being separated from the window opening / closing detection device 10, and a detection signal indicating the opening of the window is detected by detecting the decrease in the magnetic force with a hall sensor. Sent to a monitoring device wirelessly to alert.

  The window open / close detection device 10 is arranged so that the lower end thereof is close to the crescent lock 16 provided on the window sash 12a, 12b, and the magnetic force of the crescent lock detection magnet 20 attached to the open / close lever 18 of the crescent lock 16 is lowered to the lower end. It is detected by a hall sensor built in the side.

  The crescent lock 16 locks the window sashes 12a and 12b at an operation position in which the opening / closing lever 18 is rotated in the illustrated vertical direction. At this time, the crescent lock detection magnet 20 is the hall sensor closest to the window opening / closing detection device 10. The magnetic force to be detected is maximized, and the locked state is detected.

When the closing lever 18 to unlock the crescent lock 16 by turning the lower magnetic force is reduced by crescent lock detecting magnet 20 leaves, a detection signal indicating the unlocking state reduction of the magnetic force detected by the Hall sensor Sends a warning to the monitoring device by radio.

  FIG. 2 is an explanatory view showing the relationship between the hall sensor and the magnet in the installed state of FIG. 1, in which FIG. 2 (A) shows a plan view and FIG. 2 (B) shows a state seen from the lateral direction.

  As shown in FIG. 2 (A), the window opening / closing detection device 10 of the present embodiment is attached to the vertical frame of the window sash 12a located inside by double-sided tape or screws, and is opposed to the right side surface of the window opening / closing detection device 10. The window opening / closing detection magnet 14 is adhered to the glass surface of the window sash 12b with double-sided tape.

  As shown in FIG. 2B, the window opening / closing detection hall sensor 46 built in the window opening / closing detection device 10 is mounted on the sensor substrate 45 so that the effective detection surface faces the window opening / closing detection magnet 14. With the sashes 12a and 12b closed, the distance d from the side of the apparatus is minimum, and the window opening / closing detection magnet 14 outputs a magnetic level detection signal that is maximum with positive polarity, for example, according to the direction of the magnetic field indicated by the broken line. doing.

  The minimum distance d when the window is closed varies depending on the structure of the window sash and the attachment state of the window opening / closing detection device 10, but in the present embodiment, the window is at a magnetic force level when it is disposed at a distance within a specified range. The amplification factor and determination threshold value by the amplifier circuit 52 are set so that the closed determination result can be obtained efficiently.

  In contrast to FIG. 2, when the window sash 12b is on the inner side and the window sash 12a is on the outer side, the window opening / closing detection device 10 is installed in the opposite direction to the vertical frame on the right end of the inner window sash 12b. In this case, the lines of magnetic force generated by the window opening / closing detection magnet 14 affixed to the glass surface of the window sash 12a pass through the window opening / closing detection hall element 46 in the reverse direction from left to right, and from the window opening / closing detection hall sensor 46. Is output as a negative polarity magnetic force level detection signal.

  FIG. 3 is an exploded view showing an embodiment of the window opening / closing detection apparatus according to the present invention. In FIG. 3, the window opening / closing detection device 10 according to the present embodiment includes an apparatus main body 22 and a cover member 24.

  The apparatus body 22 is assembled from the bottom side, a base 30, a metal plate lock cover 32, a body case 36, a circuit board 38 including an antenna 40, and a body cover 40, and a battery 44 is detachably provided. . A conical magnetic current collector 26 is housed and fixed in the holder member 28 at an end portion of the cover member 24 located on the crescent lock side.

  A sensor board 45 is erected on the upper side of the circuit board 38, and the window opening / closing detection hall sensor 46 and the processing circuit section are mounted thereon. A crescent lock detecting hall element 48 is installed at the lower end of the circuit board 38, and a window opening / closing detecting hall element 46 is arranged on the sensor board 45 standing on the upper side.

  FIG. 4 is an explanatory view showing a state where the cover member 24 is removed from the apparatus main body 22 in the window opening / closing detection apparatus 10 according to the present embodiment. On the upper part of the apparatus main body 22, a display unit 56 using two-color LEDs of red LED and green LED, a registration switch 60 for executing registration processing for initial registration of the magnetic force level detected by the lock detection hall sensor 48, and a cover member A tamper switch 64 for detecting the opening / closing of 24 is provided. The apparatus main body 22 is fitted and fixed in response to the fitting of the cover member 24.

The cover member 24 is opened and closed with respect to the apparatus body 22, so that the provided display window 5 7 in the front center, visible display state of the display unit 56 of the apparatus body 22.

  FIG. 5 is a block diagram showing a circuit configuration of the window opening / closing detection apparatus according to the present embodiment. In FIG. 5, a processor 50 provided as a control unit is a computer known as a one-chip microcomputer, and includes a CPU, a ROM, a RAM, an AD conversion port, various input / output ports, etc. on one chip. In the embodiment, a nonvolatile memory 68 such as an EEPROM is externally attached.

  A magnetic force level detection signal from the window opening / closing detection magnet 14 provided on the window glass detected by the window opening / closing detection hall sensor 46 is amplified by the amplifier circuit 52 and then applied to the AD conversion port 70 for digital conversion. The obtained magnetic force level (AD conversion value) is obtained.

  Further, a magnetic force level detection signal detected by the lock detection hall sensor 48 by the crescent lock detection magnet 20 provided on the open / close lever 18 of the crescent lock 16 is amplified by the amplification circuit 54 and then applied to the AD conversion port 72 for digital conversion. The obtained magnetic force level (AD conversion value) is obtained.

  FIG. 6 is a circuit diagram showing details of the lock detection hall sensor 48 and the amplifier circuit 54 of FIG. In FIG. 6, the lock detection Hall sensor 48 can be represented by an equivalent circuit in which four resistors r are bridge-connected, and the output linearly changes according to the strength of the magnetic field due to the change of the resistance r according to the magnetic field. A voltage is obtained.

  The polarity of the output voltage depends on the direction of the line of magnetic force passing through the lock detection Hall sensor 48, and the output voltage of the positive polarity that the output voltage increases with the increase of the magnetic field, and the output of the negative polarity that the output voltage decreases with the increase of the magnetic field Voltage. Further, the battery voltage Vc is directly supplied from the battery 44 to the lock detection hall sensor 48. Therefore, in the present embodiment, the lock voltage detection hall sensor 48 is driven at a constant voltage and is greatly affected by the fluctuation of the battery voltage Vc.

  The output voltage of the lock detection hall sensor 48 is amplified by the amplifier circuit 54, sampled by the AD conversion port 72 of the processor 50, and converted into 8-bit AD conversion data.

  The amplifier circuit 54 comprises a differential amplifier circuit by the operational amplifier 82 and the resistors R1, R2, R3, and R4. Here, R1 = R3 and R2 = R4, and the voltage amplification gain G is given by G = R2 / R1.

  The same circuit as that shown in FIG. 6 is used for the window opening / closing hall sensor 46 and the amplifier circuit 52.

  Referring to FIG. 5 again, the processor 50 is provided with a display unit 56, a frequency switch 58, a registration switch 60, a test switch 62, a tamper switch 64, and a wireless transmission unit 66.

  The display unit 56 is provided with a two-color LED, a red LED 56a serving as a first display unit and a green LED 56b serving as a second display unit. For example, the red LED 56a is turned on upon detection of an abnormality such as opening of a window or unlocking, and thereafter normal The green LED 56b is turned on by the return. In addition, the registration state is displayed at the time of initial registration of the magnetic force level detected by the lock detection hall sensor 48. The frequency switch 58 selects any one of a plurality of usable channels prepared in advance for the wireless transmission unit 66.

  The registration switch 60 is used for setting a registration mode for registering a magnetic force level necessary for monitoring the locking of the crescent lock 16 at the start of use of the window opening / closing detection device 10 of the present embodiment. A reed switch is used as the test switch 62. When the test magnet is brought close to the test switch 62, the test switch 62 operates to transmit a test message from the wireless transmission unit 66 to the monitoring board. The tamper switch 64 is a switch that detects opening and closing of the cover member 24.

  The wireless transmission unit 66 is provided with a transmission circuit, and wirelessly communicates the monitoring state to the monitoring panel.

Nonvolatile memory 68 and a determination threshold required for window opening and closing determination apparatus, data such effective levels used in initial registration of the magnetic force level required to lock monitoring crescent lock 16 is stored in advance, the locking monitor crescent lock 16 When the necessary initial registration is completed, the magnetic force level Vs and the determination threshold value TH are stored as illustrated.

  The processor 50 is provided with a registration processing unit 74, a power supply stability timing setting unit 75, a window opening / closing monitoring unit 76, a lock monitoring unit 78, and a communication control unit 80 as functions realized by execution of a program by the CPU.

  As shown in FIG. 1, the registration processing unit 74 operates the open / close lever 18 of the crescent lock 16 to the unlocked position after the installation of the window open / close detection device 10, the window open / close detection magnet 14 and the crescent lock detection magnet 20 is completed. In this state, when the cover member 24 is removed and the registration switch 60 of the apparatus main body 22 is operated as shown in FIG. 3, the registration mode is set and the registration process is executed.

  When the registration mode is started, the red LED 56a of the display unit 56 starts blinking. This red LED 56a blinks, as will be clarified in the following description, so that the operation stop timing can be secured when the magnetic force level for the initial registration is taken. It should not be an action.

  While the red LED is blinking, the cover member 24 is attached to the apparatus main body 22, and the open / close lever 18 of the crescent lock 16 is operated to the locked position to bring the crescent lock detection magnet 20 closer.

  During the registration mode operation, the registration processing unit 74 acquires the magnetic force level detected by the lock detection hall sensor 48 and compares it with a predetermined effective level set in advance. Stored as a magnetic force level Vs. Note that the second and subsequent magnetic force levels are overwritten on the magnetic force level Vs of the nonvolatile memory 68.

When the magnetic force level Vs is effectively initially registered in the nonvolatile memory 68, the green LED 56b of the display unit 56 is turned on to notify the completion of the initial registration. When the initial registration is completed, the registration processing unit 74 calculates a value obtained by multiplying the initially registered magnetic force level Vs by a predetermined ratio, and registers it in the nonvolatile memory 68 as a determination threshold TH for determining whether the crescent lock 16 is unlocked or unlocked. The locking monitoring unit 78 starts monitoring the locking of the crescent lock 16 .

On the other hand, if the operation of closing the cover member 24 and returning the open / close lever 18 of the crescent lock 16 to the locked position is not performed during a predetermined time in which the registration mode is set by operating the registration switch 60, the effective level is set. The initial registration of the magnetic force level is not completed and the red LED 56a is switched from blinking to lighting when the registration mode is set within a predetermined time, and the initial registration failure is not obtained. displayed, sets an error status of the registration process is not performed locking monitor Crescent lock 16 by locking monitoring unit 78.

  In this case, the opening / closing lever 18 is returned to the unlocked position, the cover member 24 is opened, and the registration switch 60 is operated, so that the initial registration of the magnetic force level is performed again.

The operation procedure of the method necessary for the initial registration of the magnetic force level by the registration processing unit 74 is as follows.
(1) The crescent lock detection magnet 20 is set to the maximum distance by operating the open / close lever 18 to the unlock position.
(2) Open the cover member 24 and operate the registration switch 60.
(3) Within a predetermined time from the operation of the registration switch 60, the open / close lever 18 is operated to the locked position with the cover member 24 closed to the apparatus main body 22, and the crescent lock detecting magnet 20 is set to the minimum distance.

  The window opening / closing monitoring unit 76 compares the magnetic force level obtained from the window opening / closing detection hall sensor 46 with a determination threshold value from the non-volatile memory 68, determines whether the window is open or closed, and transmits a message indicating the determination result to the wireless transmission unit 66. To send it to the monitoring panel to make an alarm or cancel the alarm.

Furthermore, since the window opening and closing the monitoring unit 76 to deal with the so-called fraud such as open windows in the magnetic force level by bringing the strong magnet from the outside is not below the threshold, the magnetic force level is at the window closing force level On the other hand, a message indicating that the window is opened is transmitted even when a threshold value exceeding a predetermined ratio is exceeded. Also, based on the magnetic force level at the time of locking and unlocking, an appropriate range of the normal use magnetic force level is set, and if the magnetic force level deviates up and down from the appropriate range, it may be determined that fraud has occurred. good. In other words, the upper limit value of the proper use range is set to a value that is higher by a predetermined ratio than the magnetic force level at the time of locking, and the lower limit value is set to a value that is lower by a predetermined ratio than the zero point level at the time of unlocking, so that the magnetic force is within the proper range. It is possible to detect whether there is a level and determine fraud. This is not limited to the measurement of the magnetic force level of the crescent lock 16 , but can also be applied to the measurement of the magnetic force level for window opening / closing detection.

The lock monitoring unit 78 compares the threshold value TH set by the registration processing unit 74 based on the initial registration of the magnetic force level obtained from the lock detection hall sensor 48, and unlocks the crescent lock 16 when the threshold value TH or less is reached. A message indicating unlocking is transmitted from the wireless transmission unit 66 to the monitoring device to give an alarm. Further, the lock monitoring unit 78 wirelessly transmits a message to that effect to the monitoring device even when it returns to normal after detecting unlocking.

  When the window opening / closing monitoring unit 76 determines that the window is open or closed, the communication control unit 80 transmits a message indicating each state change when the locking monitoring unit 78 determines whether the window is unlocked or locked. Send a regular notification message at each time interval.

  FIG. 7 is an explanatory view showing the relationship between the crescent lock detection magnet 20 and the crescent lock detection hall sensor 48 in the present embodiment. In FIG. 7, a lock detection hall sensor 48 is disposed at the crescent lock side end of the apparatus main body 22 in the window opening / closing detection apparatus 10, and a conical magnetic current collector 26 housed in the cover member 24 in front (downward) thereof. Is arranged. A battery 44 is disposed behind (above) the hall sensor 48 for locking detection.

  The crescent lock detection magnet 20 provided on the open / close lever 18 of the crescent lock 16 is located at a distance h from the outer end surface of the illustrated cover member 24 in the locked state of the open / close lever 18, and the distance h at this lock position is the minimum distance. Become. The magnetic flux from the crescent lock detection magnet 20 enters the large-diameter incident surface of the magnetic collector 26, then converges on the opposite small-diameter exit surface and passes through the lock detection hall sensor 48.

The magnetic flux generated by the crescent lock detection magnet 20 is detected as a voltage signal corresponding to the magnetic force by the lock detection hall sensor 48, amplified by the amplifier circuit, and read as a magnetic force level (AD conversion value) by the AD conversion port.
In addition, if the device main body and magnet are placed close to each other after shipment from the factory, the internal circuits and components, or the mounting surface of the device main body may be magnetized, and the magnetic force level detected by the Hall sensor at that time increases. Offset.

Figure 8 is a graph showing the AD conversion characteristics of the magnetic force level detection signal by the AD conversion port 7 2 of FIG. The crescent lock detection hall sensor 48 shown in FIG. 5 outputs a positive polarity magnetic level detection signal and a negative polarity magnetic level detection signal according to the direction of passage of the magnetic lines of force.

  The magnetic force level detection signal from the lock detection hall sensor 48 is amplified by the amplification circuit 54. As the amplifier circuit 54, a differential amplifier circuit is used as shown in FIG. The magnetic force level detection signal (voltage signal) amplified by the amplifier circuit 54 is converted into, for example, 8-bit magnetic force level data by the AD conversion port 72.

  The conversion characteristic of the AD conversion port 72 has a value of 0 to 256 as a decimal AD conversion value as shown by the vertical axis in FIG. 8, and the input positive polarity magnetic force level detection signals 0 to + Vmax are converted into AD conversion values. It converts into 128-256, and the magnetic force level detection signal 0-Vmax of the minus polarity input is converted into AD conversion value 128-0.

FIG. 9 is a graph showing the relationship between the magnetic force level detected by the crescent lock detecting hall sensor 48 and the distance h from the device end face shown in FIG. 8 to the crescent lock detecting magnet 20. Note that the actual conversion characteristics of the AD conversion port 7 2 becomes as shown in FIG. 8, in the FIG. 9, for simplicity of description, regardless of the polarity of the magnetization level detection signal, the AD conversion value Shown as 0-128.

  The characteristic A in FIG. 9 is a case where the influence is caused by the magnetization of the peripheral member, and AD that becomes a magnetic force level when the distance h to the crescent lock detection magnet 20 in FIG. 7 is changed to h = 0 to 40 mm. The conversion value is shown.

  Here, for example, if the distance h to the crescent lock detection magnet 20 is h = 20 mm, the magnetic force level Vs corresponding to the point P of the characteristic A is initially registered. The determination threshold value TH is set as a value obtained by multiplying a predetermined ratio of the initially registered magnetic force level Vs.

  On the other hand, the characteristic B is a case where it is not affected by magnetization, and in this case, the characteristic is lowered by the magnetization level. In this embodiment, the initial registration of the magnetic force level is performed for the characteristic A including the offset due to the magnetization of the peripheral member, and the actual registration is actually performed according to the characteristic B that does not include the magnetization in the initial registration of the magnetic force level at the factory shipment stage. Prevents initial registration of different magnetic force levels.

If the initial registration of the magnetic force level according to the characteristic B that does not include the influence of magnetization is performed for the distance h, the determination threshold set by multiplying the registered magnetic force level by a predetermined ratio is the determination calculated by the characteristic A becomes lower than the threshold, decreases the detection sensitivity unlocking crescent lock 16, not detected unlocked unless turned considerably crescent lock 16 in the unlocking direction, a problem occurs such as delayed unlocking detection.

  FIG. 10 is a flowchart showing the window opening / closing detection process of the present embodiment by the processor of FIG.

  In FIG. 10, when the battery 44 is turned on and the power is turned on, the initialization process and the self-diagnosis process are executed in step S1. If there is no abnormality, the process proceeds to step S2, and the window opening / closing stored in the nonvolatile memory 68 is performed. Read data including decision threshold.

  Subsequently, the process proceeds to step S3, where it is determined whether or not the registration mode is selected. If it is the registration mode, the process proceeds to step S4, and a threshold value setting for detecting the opening and closing of the crescent lock 16 based on the initial registration of the magnetic force level by the lock detection hall sensor 48 is set. The registration process including is executed. As described above, the registration mode is started by opening the cover member 24 and operating the registration switch 60 as shown in FIG.

  Subsequently, in step S5, it is determined whether or not a predetermined monitoring cycle has been reached. If it is determined that the monitoring cycle has been reached, low battery monitoring processing for the battery 44 is executed in step S6. At this time, if the battery voltage drops below a specified voltage, a message indicating a low battery is wirelessly transmitted to the monitoring panel to display a failure.

  Next, in step S7, a window opening / closing monitoring process is executed, and when a window opening or window closing is determined, a message indicating the contents is transmitted to the monitoring board. In step S8, a lock monitoring process is executed, and when unlocking or subsequent locking is determined, a message indicating the contents is transmitted to the monitoring board. Subsequently, in step S9, it is determined whether the regular notification time has elapsed, and if it is determined that the process has elapsed, the process proceeds to step S10, where a periodic notification process for transmitting a periodic notification message to the monitoring panel is performed.

  FIG. 11 is a flowchart showing details of the registration process in step S4 of FIG. In FIG. 11, it is first determined in step S11 that the registration switch 60 is turned on. For initial registration of the magnetic force level, the open / close lever 18 is operated to the unlocked position and the crescent lock detecting magnet 20 is set to the maximum distance. When the cover member 24 is opened and the registration switch 60 is operated, it is determined that the registration switch is turned on, the process proceeds to step S12, the red LED 56a blinks, and the registration mode is started in step S13.

  In the registration mode, it is determined whether or not a predetermined time, which is a registerable period, has elapsed by the timer started at the start of the registration mode in step S14. The process proceeds to step S15 until the predetermined time elapses, and in step S12. It is determined whether or not the red LED 56a that has started blinking is at the turn-off timing.

  When the turn-off timing is determined in step S15, the process proceeds to step S16, where it is determined whether or not the wireless transmission unit 66 is in communication stop. If it is determined that communication is stopped, the process proceeds to step S17. The obtained magnetic force level is taken in from the AD conversion port 72 and held in the register.

  For this reason, the red LED 56a is in the extinguishing timing, and the battery voltage Vcc is not lowered and fluctuated due to the increase in the operating current when the operation of the wireless communication unit 66 is stopped. Can be captured.

  Subsequently, the magnetic force level held in the register is compared with the predetermined effective level set in advance in step S18, and if it is the effective level, the process proceeds to step S19 and is stored in the nonvolatile memory 68 as the magnetic force level Vs.

  In actual processing, when a magnetic force level that is an effective level can be acquired continuously a plurality of times, the last acquired magnetic force level is initially registered in the nonvolatile memory 68.

When the magnetic force level Vs is effectively initially registered in the nonvolatile memory 68, the green LED 56b of the display unit 56 is turned on in step S20 to notify the completion of the initial registration. When the initial registration is completed, a value obtained by multiplying the magnetic force level Vs initially registered in step S21 by a predetermined ratio is calculated and registered in the non-volatile memory 68 as a determination threshold TH for determining whether the crescent lock 16 is unlocked or unlocked, and in step S22. The locking monitoring unit 78 starts monitoring the locking of the crescent lock 16 .

On the other hand, when the operation of closing the cover member 24 and returning the open / close lever 18 of the crescent lock 16 to the locked position is not performed during a predetermined time which is a registration possible period in which the registration mode is set by operating the registration switch 60. Since a magnetic force level exceeding the effective level cannot be obtained in step S18, when it is determined in step S14 that the registerable period has elapsed, the process proceeds to step S23, where the red LED 56a is switched from blinking to lighting, and an initial registration failure occurs. displayed, and registers the error condition of the registration process in step S24, is not performed locking monitor Crescent lock 16 by locking superintendent processing section 78.

  In the above embodiment, the red LED 56a is extinguished and the wireless transmission unit 66 determines the power source stable timing when communication is stopped and takes in the magnetic force level to perform initial registration. The operation of the wireless transmission unit 66 may be forcibly stopped.

  In the above embodiment, the determination threshold is set by multiplying the initially registered magnetic force level by a predetermined ratio. If the offset of the Hall sensor itself is known in advance, the offset is shipped to the factory. Measured in stages and stored in non-volatile memory. When calculating the judgment threshold from the initially registered magnetic force level, the magnetic force level change amount is obtained by subtracting the offset from the magnetic force level, and this change amount is multiplied by a predetermined ratio. An offset may be added to the value to obtain the determination threshold TH.

  In the above-described embodiment, the magnetic force level detected by the magnetic detection element is acquired by determining the timing at which the operation of the wireless transmission unit is stopped in the registration mode. The measurement of the magnetic force level in the normal monitoring state may also be performed at the timing when the operation of the wireless transmission unit or the display circuit is stopped.

  In the above embodiment, the determination threshold value for crescent lock monitoring is taken as an example. Similarly, for window opening / closing monitoring, similarly, the magnetic field level is initially registered at the installation site and the window opening / closing determination threshold value is set. You may do it.

Further, the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

Explanatory drawing which showed the installation state of the window opening / closing detection apparatus by this invention Explanatory drawing which showed the relationship between a hall sensor and a magnet in the window opening / closing detection of FIG. Assembly exploded view showing an embodiment of a window opening and closing detection device according to the present invention Explanatory drawing which showed the state which removed the cover member from the apparatus main body about the window opening / closing detection apparatus by this embodiment The block diagram which showed the circuit structure of the window opening / closing detection apparatus by this embodiment FIG. 5 is a circuit diagram showing details of the locking detection hall sensor and its amplifier circuit. Explanatory drawing which showed the relationship between the crescent lock detection magnet and Hall sensor in this embodiment The graph which showed the AD conversion characteristic of the magnetic force level detection signal by the AD conversion port of FIG. The graph which showed the relationship of the magnetic force level detected with the Hall sensor with respect to the distance from the apparatus lower end in this embodiment to a crescent lock detection magnet The flowchart which showed the window opening / closing detection process of this embodiment by the processor of FIG. The flowchart which showed the detail of the registration process in step S4 of FIG.

Explanation of symbols

10: Window open / close detection devices 12a, 12b: Window sash 14: Window open / close detection magnet 16: Crescent lock 18: Open / close lever 20: Crescent lock detection magnet 22: Device main body 24: Cover member 26: Magnetic collector 28: Holder member 40: Antenna 44: Battery 46: Window open / close detection hall sensor 48: Lock detection hall sensor 56: Display unit 58: Frequency changeover switch 60: Registration switch 75: Power supply stability timing setting unit 76: Window open / close monitoring unit 78: Locking monitoring unit 80: Communication control unit 82: Operational amplifier

Claims (5)

Closed state of the monitored object at the to that opening-closing detecting unit monitoring,
A magnet disposed on the object to be monitored,
An apparatus body including a magnetic detection element and a processing circuit unit for detecting a magnetic force level of the magnet;
A registration operation unit provided in the apparatus body;
A battery provided in the apparatus body;
With
In the processing circuit section,
The registration operation unit I and redo operation to the magnetic detection element on the basis of the force level the acquired acquires the force level detected by setting the determination threshold value for detecting the open or closed state of the monitored object registration processing unit When,
And power stabilization timing setting unit which acquires magnetic force level detected by the pre-Symbol magnetic detector element to determine the timing of stopping the circuit operation to vary the power supply voltage supplied from the battery in the registration processing unit,
A monitoring section you determine the open or closed state of the monitored object by comparing the the detected force levels the determination threshold value by the magnetic sensing element,
Open-close detecting device you comprising the.
In the open closed detection device according to claim 1, as a circuit for varying the power supply voltage,
A wireless transmission unit for transmitting the monitoring state of the monitoring unit to the outside;
A display unit for displaying a registration status of the registration processing unit;
With
The power supply stabilization timing setting unit determines at least a timing at which the operations of the wireless transmission unit and the display unit are stopped, and causes the registration processing unit to acquire a magnetic force level detected by the magnetic detection element. that open closed detection devices.
In the open closed detection device according to claim 2,
Pre Symbol registration processing unit, when you start the operation by the operation of the registration operation unit, and blinking the front Symbol Table radical 113,
The power stabilization timing setting section before Symbol Table radical 113 the register the magnetic force level detected by the magnetic sensing element operation and the radio transmitting unit in the display stop timing is to determine the timing is stopped at the flashing operation of the open-close detecting device you characterized thereby obtaining the processing unit.
In the open closed detection device according to claim 1, wherein the power supply stabilization timing setting unit is capable stop circuit operation to vary the power supply voltage by the magnetic sensing element while the circuit operation is stopped open-close detecting device you characterized thereby obtaining the detected force levels in the registration processing unit.
In the open closed detection device according to claim 1, wherein the object to be monitored, open closed detection device you being a crescent tablets provided in the window and / or the window.

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