JP2009211400A - Wireless crime-prevention sensor apparatus - Google Patents

Abstract

A sensor at the time of simultaneous sensor detection by providing a difference in transmission timing of sensor detection signals transmitted from a plurality of wireless security sensor terminals to a master terminal by wireless communication for each wireless security sensor terminal. Wireless communication with improved stability by preventing collision of detection signals is performed.
Sensor detection signals S1a, S1b, S1c, which are transmitted by wireless communication from a transmission circuit 110 of a plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b, 2c to a master terminal 3 at the time of sensor detection. The transmission times of S2a, S2b, and S2c are periodically acquired in the wireless communication performed with the master terminal at any time T1a, T1b, T1c, T2a, T2b, and T2c for each wireless security sensor terminal. The electric field intensity value or the illuminance value indicating the brightness in the vicinity of the wireless security sensor terminal detected by the illuminance sensor 17 is multiplied and the time determined by the control units 16a and 16b is applied.
[Selection] Figure 2

Description

  The present invention relates to a wireless security sensor device that performs wireless communication between a plurality of wireless security sensor terminals and a master terminal, and in particular, stable transmission signals wirelessly communicated from a wireless security sensor terminal to a master terminal. The present invention relates to a wireless security sensor device with improved performance.

  In recent years, crimes such as thieves and other suspicious persons entering the dwelling units have frequently occurred, and this countermeasure is urgently needed. Therefore, as a security system for a dwelling unit, home security having a configuration in which an abnormal situation in a house is informed through a wireless telephone line to a pager (registered trademark) carried by an outsider has been disclosed (for example, a patent) See reference 1.)

  According to this home security, various sensors such as heat detection sensors, smoke detection sensors, gas sensors, security detection sensors, etc. are placed in the dwelling unit (in each room), and when various security abnormalities such as gas leaks are detected, An alarm is issued by the main controller connected by wire, and a radio telephone line transmitter built in the main controller is activated, and an alarm is issued by a pager or mobile phone carried by the outsider. The

  Also disclosed is a portable security system in which a wireless connection is applied as another aspect of the connection between the various sensors and the main controller, and an alarm can be issued when a security abnormality is detected by the various sensors. (For example, see Patent Document 2).

JP-A-6-36154 JP 2000-36088 A

  However, in the portable security system of Patent Document 2 described in the background art, when a plurality of various sensors start operating at the same timing, signals transmitted from the various sensors to the main controller through wireless communication collide with each other. There is a risk that wireless communication with improved stability cannot be performed, and therefore it is difficult to issue an accurate alarm.

  The present invention has been made to solve this problem, and there is a difference in transmission timing of sensor detection signals transmitted from a plurality of wireless security sensor terminals to the master terminal by wireless communication for each wireless security sensor terminal. It is an object of the present invention to provide a wireless security sensor device capable of performing wireless communication with improved stability by preventing collision of sensor detection signals at the time of simultaneous sensor detection.

  In order to achieve the above-described object, the wireless security sensor device according to the first aspect of the present invention includes a transmission circuit for transmitting a sensor detection signal by wireless communication at the time of sensor detection, and a wireless communication of a confirmation signal of the sensor detection signal. Wireless security sensor terminals having a plurality of reception circuits for receiving wirelessly, and a reception circuit for receiving a sensor detection signal transmitted from the wireless security sensor terminal by wireless communication and a confirmation signal by wireless communication And a master terminal having a transmission circuit for transmitting to the type security sensor terminal. The wireless security sensor terminal can set the time measured from the time of sensor detection until the sensor detection signal is transmitted by wireless communication, and the time measured by the time measuring unit arbitrarily set for each wireless security sensor terminal And a setting unit for doing so.

  Moreover, the wireless security sensor device according to the second aspect of the present invention is the wireless security sensor terminal according to the first aspect of the present invention, wherein the wireless security sensor terminal periodically determines the electric field strength of wireless communication performed with the master terminal. A control unit is provided for determining the transmission time based on the time obtained by multiplying the acquired field strength value by the time set by the setting unit.

  The wireless security sensor device according to the third aspect of the present invention is the wireless security sensor terminal according to the first aspect of the present invention, in which the wireless security sensor terminal detects brightness in the vicinity of the wireless security sensor terminal. Illuminance sensor and a control unit for determining the transmission time based on the time set by the setting unit multiplied by the illuminance value detected by the illuminance sensor.

  The wireless security sensor device according to the fourth aspect of the present invention is the wireless security sensor terminal according to the second aspect or the third aspect of the present invention, wherein the control unit of the wireless security sensor terminal is a time set by the setting unit. The time interval until the sensor detection signal is retransmitted to the master terminal by wireless communication is determined based on the time obtained by multiplying the acquired electric field intensity value or the illuminance value detected by the illuminance sensor.

  According to the wireless security sensor device of the present invention, the transmission time of the sensor detection signal transmitted by wireless communication from the transmission circuit of a plurality of wireless security sensor terminals to the reception circuit of the master terminal at the time of sensor detection is determined by the setting unit. Control by multiplying the electric field strength value periodically acquired in the wireless communication performed with the master terminal at any time for each of the plurality of wireless security sensor terminals measured by the time measuring unit in the setting. By applying the time determined by the unit, there is a difference in the transmission timing of the sensor detection signal for each wireless security sensor terminal, and it is possible to prevent the collision of the sensor detection signal at the time of simultaneous sensor detection and to stabilize It is possible to carry out wireless communication with improved performance.

  Also, according to the wireless security sensor device of the present invention, as the transmission time of the sensor detection signal transmitted by wireless communication from the transmission circuit of the plurality of wireless security sensor terminals to the reception circuit of the master terminal at the time of sensor detection, set Illuminance value indicating brightness in the vicinity of the wireless security sensor terminal detected by the illuminance sensor at an arbitrary time for each of the plurality of wireless security sensor terminals timed by the timing unit set by the unit Is applied to the time determined by the control unit, the transmission timing of the sensor detection signal is different for each wireless security sensor terminal, and the collision of the sensor detection signal at the time of simultaneous sensor detection is generated. Wireless communication with improved stability can be performed.

  Furthermore, according to the wireless security sensor device of the present invention, as the time interval of the sensor detection signal retransmitted by wireless communication from the transmission circuit of the plurality of wireless security sensor terminals to the reception circuit of the master terminal at the time of sensor detection, Electric field strength value or illuminance periodically acquired in wireless communication performed with the master terminal at an arbitrary time for each of the plurality of wireless security sensor terminals measured by the timing unit by setting by the setting unit Sensor detection signal collision at the time of retransmission by applying the time interval determined by the control unit by multiplying the illuminance value indicating the brightness of the vicinity of the wireless security sensor terminal detected by the sensor Can be prevented, and wireless communication with improved stability can be performed.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments to which a wireless security sensor device of the invention is applied will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an overall configuration of a wireless security sensor device according to an embodiment of the present invention. This wireless security sensor device is used to detect various security anomalies such as thieves and other suspicious persons entering the dwelling unit, the presence of deaf persons, fires, gas leaks, water leaks, etc. Wireless communication between the plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b and 2c and the plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b and 2c. Receiving a sensor detection signal transmitted by wireless communication from the wireless security sensor terminal that has detected various security anomalies, and receiving a confirmation signal indicating that the reception of the sensor detection signal has been confirmed. A master terminal 3 for transmitting to the wireless security sensor terminal by wireless communication is provided.

  Each of the plurality of wireless security sensor terminals 1a, 1b, and 1c is assigned an individual terminal ID with the same configuration, and the first of the plurality of wireless security sensor terminals in the embodiment of the present invention. It is set as this aspect. Further, each of the plurality of wireless security sensor terminals 2a, 2b, and 2c is assigned an individual terminal ID with the same configuration, and the second of the plurality of wireless security sensor terminals in the embodiment of the present invention. It is set as this aspect.

  Next, a specific configuration of the plurality of wireless security sensor terminals 1a, 1b, and 1c will be described with reference to the block diagram of FIG. The plurality of wireless security sensor terminals 1a, 1b, and 1c include a security sensor unit 10, a wireless communication unit (hereinafter referred to as a sensor wireless communication unit) 11, a time measuring unit 12, a setting unit 13, and a display unit (hereinafter referred to as a wireless communication unit). A sensor display unit 14, a power supply unit (hereinafter referred to as sensor power supply unit) 15, and a control unit (hereinafter referred to as sensor control unit) 16 a are provided.

  In the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. 2A, the security sensor unit 10 is detected by the sensor control unit 16a to detect various security abnormalities. .

  The sensor wireless communication unit 11 transmits information for transmitting a sensor detection signal generated by the sensor control unit 16a including information on various security abnormalities detected by the security sensor unit 10 to the master terminal 3 by wireless communication. The circuit 110 includes a reception circuit 111 for receiving a confirmation signal generated by the master terminal 3 and transmitted by wireless communication and sending the confirmation signal to the sensor control unit 16a. In the first aspect of the wireless security sensor terminal, the receiving circuit 111 periodically acquires a received signal strength indicator (RSSI) of wireless communication performed with the master terminal 3 to perform sensor control. It can be sent to the part 16a.

  The timing unit 12 is controlled by the sensor control unit 16a, and the sensor detection signal generated by the sensor control unit 16a starts from the time (detection time) when various security abnormalities are detected by the security sensor unit 10. This is for measuring the time until wireless transmission from the transmission circuit 110 of the sensor wireless communication unit 11. The timekeeping unit 12 is not limited to a mode provided separately from the sensor control unit 16a as shown in the drawing, and may be provided integrally with the sensor control unit 16a as indicated by a broken line.

  The setting unit 13 is for arbitrarily setting the time detected by the sensor control unit 16a and timed by the time measuring unit 12 for each of the plurality of wireless security sensor terminals 1a, 1b, and 1c. For example, it is composed of a numeric key switch and a dip switch.

  The sensor display unit 14 is controlled by the sensor control unit 16a, and displays alarms indicating various security abnormalities detected by the security sensor unit 10, and confirmation signals generated by the master terminal 3 and transmitted by wireless communication. Is received by the sensor control unit 16a, and the master terminal is blinked / lighted in a predetermined pattern (color pattern) when performing a warning display and a confirmation display indicating that the alarm is displayed normally. For example, it is composed of LEDs.

  The sensor power supply unit 15 is controlled by the sensor control unit 16a, and supplies operating power to each component of the plurality of wireless security sensor terminals 1a, 1b, and 1c. For example, a DC power supply is stored in advance. It is composed of a secondary battery.

  The sensor control unit 16a is for controlling each component of the plurality of wireless security sensor terminals 1a, 1b, and 1c. As a specific control, the sensor control unit 16a performs the operation with the master terminal 3 at an arbitrary time for each of the plurality of wireless security sensor terminals timed by the time measuring unit 12 set by the setting unit 13. The sensor detection signal is transmitted from the transmission circuit 110 of the sensor wireless communication unit 11 to the master terminal 3 by wireless communication according to a time (transmission time) determined by multiplying the field strength value periodically acquired in wireless communication. be able to. In addition, the sensor control unit 16a performs wireless communication with the master terminal 3 at an arbitrary time for each of the plurality of wireless security sensor terminals measured by the time measuring unit 12 according to the setting by the setting unit 13. The sensor detection signal can be retransmitted by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 to the master terminal 3 at a time interval determined by multiplying the periodically acquired electric field strength value. In addition, the sensor control unit 16a can control the sensor display unit 14 to perform alarm display or confirmation display in a predetermined pattern. Further, the sensor control unit 16a can control the sensor power supply unit 15 to vary the voltage level of the operation power supply.

  Next, a specific configuration of the plurality of wireless security sensor terminals 2a, 2b, and 2c will be described with reference to the block diagram of FIG. In addition, about the structure which has the same effect | action in the several wireless security sensor terminal 1a, 1b, 1c as a 1st structure as a structure of several wireless security sensor terminals 2a, 2b, 2c, it is the same Reference numerals shall be given and description thereof shall be omitted. The plurality of wireless security sensor terminals 2a, 2b, and 2c include a security sensor unit 10, a sensor wireless communication unit 11, a timing unit 12, a setting unit 13, a sensor display unit 14, a sensor power supply unit 15, and a sensor control unit 16b. And an illuminance sensor 17 are provided.

  In the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. 2B, the illuminance sensor 17 is controlled by the sensor control unit 16b to detect the brightness of the surrounding environment of the wireless security sensor terminal. Is for.

  The sensor control unit 16b is for controlling each component of the plurality of wireless security sensor terminals 2a, 2b, and 2c. As specific control, the sensor control unit 16b can control the sensor display unit 14 to perform alarm display or confirmation display in a predetermined pattern, as with the above-described sensor control unit 16a. The voltage level of the operating power supply can be varied by control. In addition, the sensor control unit 16b is configured to detect the wireless crime prevention that is detected by the illuminance sensor 17 at an arbitrary time for each of the plurality of wireless security sensor terminals timed by the timing unit 12 according to the setting by the setting unit 13. Transmitting a sensor detection signal from the transmission circuit 110 of the sensor wireless communication unit 11 to the master terminal 3 by wireless communication according to a time (transmission time) determined by multiplying the illuminance value indicating the brightness in the vicinity of the sensor terminal. Can do. Further, the sensor control unit 16b is configured to set the wireless security sensor terminal of the wireless security sensor terminal detected by the illuminance sensor 17 at any time for each of the plurality of wireless security sensor terminals. The sensor detection signal can be retransmitted by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 to the master terminal 3 at a time interval determined by multiplying the illuminance value indicating the brightness in the vicinity of the surroundings.

  Next, a specific configuration of the master terminal 3 will be described with reference to the block diagram of FIG. The master terminal 3 includes a wireless communication unit (hereinafter referred to as a master wireless communication unit) 30, a notification unit 31, a display unit (hereinafter referred to as a master display unit) 32, and a power supply unit (hereinafter referred to as a master power supply unit). ) 33 and a control unit (hereinafter referred to as a master control unit) 34.

  In the master terminal 3 shown in FIG. 3, the master wireless communication unit 30 performs wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 that constitutes a plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b, and 2c. Is generated by the receiving circuit 300 for receiving the sensor detection signal transmitted by the receiver and sending it to the master control unit 34, and the master control unit 34 to which the sensor detection signal received by the receiving circuit 300 is input. A transmission circuit 301 for transmitting the confirmation signal to a specific wireless security sensor terminal that has detected various security abnormalities by the security sensor unit 10 by wireless communication.

  The reporting unit 31 is controlled by the master control unit 34 and indicates various security abnormalities detected by the security sensor units 10 of the plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b, and 2c. When issuing an alarm, it is for outputting a predetermined alarm sound, a voice message, etc., and is composed of, for example, a loud speaker.

  The master display unit 32 is controlled by the master control unit 34, and indicates various security abnormalities detected by the security sensor units 10 of the plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b, and 2c. When displaying an alarm, it is for displaying a predetermined alarm message, picture data, etc. and / or for blinking / lighting in a predetermined pattern (color pattern), such as an LCD, PDP, organic EL display, etc. It consists of various display media and / or LEDs.

  The master power supply unit 33 is controlled by the master control unit 34 and supplies operating power to the components of the master terminal 3. For example, a power supply circuit that rectifies and smoothes commercial power and generates DC power The DC power source is composed of a secondary battery that is stored in advance.

  The master control unit 34 is for controlling each component of the master terminal 3. As a specific control, the master control unit 34 can control the alarm unit 31 and the master display unit 32 to perform alarm notification and alarm display in a predetermined pattern. Further, the master terminal 34 can change the voltage level of the operation power supply by controlling the master power supply unit 33.

  In the wireless security sensor device according to the embodiment of the present invention configured as described above, a specific operation will be described below with reference to the drawings.

  As a first operation according to the embodiment of the present invention, when applying a plurality of wireless security sensor terminals 1a, 1b, 1c having the configuration shown in FIG. 2A, the wireless security sensor terminals 1a, 1b, As shown in FIG. 1, each of the reception circuits 111 of the sensor wireless communication unit 10 constituting 1c has the lengths of the wireless communication distances La, Lb, and Lc with the master terminal 3, in this case, “La> Lb The electric field strength whose magnitude increases and decreases in inverse proportion to> Lc is periodically acquired and sent to the sensor control unit 16a.

  The sensor control units 16a of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. 2 (A) are timed by the time measuring unit 12 according to the setting by the setting unit 13, respectively. The electric field strength value (which is periodically acquired with a different value for each of the plurality of wireless security sensor terminals) is converted based on that value at any time T1a, T1b, T1c for each security sensor terminal. (Time) is performed.

  Here, assuming that the detection operation of various security abnormalities in the security sensor units 10 of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. 2 (A) is started at the same timing, Each of the sensor control units 16a of the wireless security sensor terminals 1a, 1b, and 1c displays alarms indicating various security abnormalities detected by the sensors using the sensor display unit 14 and is determined by the above-described arithmetic processing. In addition, based on the timing of T11a, T11b, and T11c, which is different for each of the plurality of wireless security sensor terminals, the security abnormality information and the terminal ID of the own wireless security sensor terminal are added. Transmitting the detected sensor detection signals S1a, S1b, and S1c from the transmission circuit 110 of the sensor wireless communication unit 11 to the master terminal 3 by wireless communication. Can therefore, sensor detection signals S1a during simultaneous sensor detection, S 1 b, collision S1c is prevented, it is possible to perform wireless communication to the master terminal 3 in a state of increased stability.

  As an example of the timing of transmission times T11a, T11b, and T11c determined by the sensor control units 16a of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. The master terminal by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 at a timing such that the sensor detection signal from the small wireless security sensor terminal has the highest priority and the order corresponding to the magnitude of the electric field strength value. 3 can be transmitted.

  Here, the wireless communication distance A between the wireless security sensor terminal 1a and the master terminal 3 shown in FIG. 1, the wireless communication distance B between the wireless security sensor terminal 1b and the master terminal 3, the wireless security sensor terminal 1c, and Since the wireless communication distance C between the master terminals 3 has a relationship of “La> Lb> Lc”, the timing of the transmission time is “T11a <T11b <T11c”, and the wireless communication shown in FIG. The sensor detection signal S1a transmitted by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 configuring the wireless security sensor terminal 1a is given top priority, and the transmission circuit of the sensor wireless communication unit 11 configuring the wireless security sensor terminal 1b. 110, the sensor detection signal S1b transmitted by wireless communication, and the sensor detection signal S transmitted by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 constituting the wireless security sensor terminal 1c. In the order of 1c, the reception circuit 300 of the master radio communication unit 30 configuring the master terminal 3 shown in FIG.

  The master control unit 34 of the master terminal 3 shown in FIG. 3 simultaneously performs sensor detection operations for various security abnormalities in the security sensor units 10 of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. When the sensor detection signal S1a received by the reception circuit 300 of the master wireless communication unit 30 is input at the timing after the elapse of the transmission time T11a from the start of the timing, the sensor detection signal S1a is added. Based on the security abnormality information and the terminal ID, various security abnormality alarms and alarm indications detected by the security sensor unit 10 of the wireless security sensor terminal 1a are displayed as an alarm unit 31 and a master display unit 32. And a confirmation signal S11a to which the terminal ID of the wireless security sensor terminal 1a is added to generate a master wireless signal. It transmits by the wireless communication from the transmission circuit 301 of the communication unit 30, and is transmitted to the sensor control unit 16a via the reception circuit 111 of the sensor wireless communication unit 10 constituting the plurality of wireless security sensor terminals 1a, 1b, 1c. .

  Each of the sensor control units 16a of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. 2A has a terminal ID added to the confirmation signal S11a transmitted from the master terminal 3 by wireless communication. The security ID detected by the security sensor unit 10 is normally alarmed and displayed on the master terminal 3 only when the terminal ID of the self-wireless security sensor terminal is verified and the verification results match. The confirmation display to the effect can be performed using the sensor display unit 14. Here, only the sensor control unit 16a of the wireless security sensor terminal 1a matches the collation result, and the confirmation display using the sensor display unit 14 is performed.

  Also, the master control unit 34 of the master terminal 3 shown in FIG. 3 performs various security abnormality sensor detection operations in the security sensor units 10 of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. Is input when the sensor detection signals S11b and S11c sequentially received by the receiving circuit 300 of the master wireless communication unit 30 are input at the timing after the elapse of the transmission times T11c and T11d described above from the start at the same timing. Based on security abnormality information and terminal ID added to the sensor detection signals S11b and S11c, various security abnormality alarms and alarm indications detected by the security sensor unit 10 of the wireless security sensor terminal 1b The various security abnormality alarms and alarm indications detected by the security sensor unit 10 of the wireless security sensor terminal 1c are issued. 31 and the master display unit 32 are used to correspond to the time difference between the transmission times T11c and T11d, respectively, and at the timing of this time difference, confirmation signals to which the terminal IDs of the wireless security sensor terminals 1b and 1c are added respectively. S11b and S11b are generated and transmitted by wireless communication from the transmission circuit 301 of the master wireless communication unit 30, via the reception circuit 111 of the sensor wireless communication unit 11 constituting a plurality of wireless security sensor terminals 1a, 1b, 1c. Then, the data is transmitted to the sensor control unit 16a.

  Further, among the plurality of wireless security sensor terminals 1a, 1b, 1c shown in FIG. 2A, the sensor control unit 16a of the wireless security sensor terminals 1a, 1b is a sensor of the above-described wireless security sensor terminal 1a. As with the control unit 16a, the collation result of the terminal ID added to the confirmation signals S11b and S11c transmitted from the master terminal 3 by wireless communication and the terminal ID of the own wireless security sensor terminal match, The sensor display unit 14 can be used to confirm that various security abnormalities detected by the sensor unit 10 have been normally issued and displayed on the master terminal 3.

  In the above description, an example of the timing of transmission times T11a, T11b, and T11c determined by the sensor control units 16a of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. As described above, the sensor detection signal from the wireless security sensor terminal having a small electric field strength value is given top priority, and the timing corresponding to the magnitude of the electric field strength value is applied. However, the timing is limited to this timing. It is not a thing. For example, in a mode where the function of the receiving circuit 111 of the sensor wireless communication unit 11 constituting the plurality of wireless security sensor terminals is inadequate, the timing unit 12 is set by the setting unit 13. The time (optional) times T1a, T1b, and T1c that are timed by the sensor may be different for each of the plurality of wireless security sensor terminals, such as “T1a ≠ T1b ≠ T1c”. The collision of the detection signals S1a, S1b, S1c is prevented, and wireless communication to the master terminal 3 can be performed in a state where stability is improved.

  Further, in the above description, various security abnormality sensor detection operations in the security sensor units 10 of the plurality of wireless security sensor terminals 1a, 1b, and 1c shown in FIG. 2A are started at the same timing. The transmission times T11a, T11b, and T11c at the time of the transmission are described. After the transmission times T11a, T11b, and T11c have elapsed, the sensor detection signals S1a, S1b, and S1c generated by the sensor control unit 16a are again transmitted to the sensor wireless communication unit. As for the time interval from the eleventh transmission circuit 110 to re-transmission to the master terminal 3, at any time for each of the plurality of wireless security sensor terminals timed by the timekeeping unit 12 set by the setting unit 13, In the sensor control unit 16a, the electric field strength value periodically acquired in the wireless communication performed with the master terminal 3 (time converted based on the value) is multiplied. Constant The time interval T21a, T21b, can be T21C. By the time intervals T21a, T21b, and T21c, the collision of the sensor detection signals S1a, S1b, and S1c at the time of retransmission can be prevented, and wireless communication to the master terminal 3 can be performed with improved stability.

  Next, as a second operation according to the embodiment of the present invention, when applying a plurality of wireless security sensor terminals 2a, 2b and 2c having the configuration shown in FIG. 2B, the wireless security sensor terminal 2a The illuminance sensors 17 of 2b and 2c monitor the brightness of the surrounding environment of the self-wireless security sensor terminal, and send the illuminance value indicating the periodically detected brightness to the sensor control unit 16b. Yes.

  The sensor control units 16b of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. 2 (B) are timed by the time measuring unit 12 according to the setting by the setting unit 13, respectively. Multiply the arbitrary time T2a, T2b, T2c for each security sensor terminal by the illuminance value (converted based on that value), which is usually detected at a different value for each of the plurality of wireless security sensor terminals. An arithmetic process is performed.

  Here, if the sensor detection operation of various security abnormalities in the security sensor units 10 of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. 2 (B) is started at the same timing, Each of the sensor control units 16b of the wireless security sensor terminals 2a, 2b, and 2c displays a warning indicating the security abnormality detected by the sensor using the sensor display unit 14 and is determined by the calculation process described above. Based on the timing of transmission times T12a, T12b, and T12c that differ for each wireless security sensor terminal, sensor detection signals S2a, S2b, and S2c to which the security abnormality information and the terminal ID of the own wireless security sensor terminal are added are Since it can be transmitted to the master terminal 3 by wireless communication from the transmission circuit 110 of the wireless communication unit 11, it is effective at the time of simultaneous sensor detection. That sensor detection signals S2a, S2b, collision S2c is prevented, it is possible to perform wireless communication to the master terminal 3 in a state of increased stability.

  As an example of the timing of the transmission times T12a, T12b, and T12c determined by the sensor control units 16b of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. The sensor wireless signal is transmitted at a timing such that the sensor detection signal from the wireless security sensor terminal in the dark surrounding environment is in the order corresponding to the size of the illuminance value with the highest priority. Transmission from the transmission circuit 110 of the communication unit 11 to the master terminal 3 by wireless communication is possible.

  Here, in FIG. 2B, the illuminance value Va indicating the brightness of the surrounding environment of the wireless security sensor terminal 2a, the illuminance value Vb indicating the brightness of the surrounding environment of the wireless security sensor terminal 2b, and the wireless security sensor. If the illuminance value Vc indicating the brightness of the surrounding environment of the terminal 2c has a relationship of “Va <Vb <Vc”, the timing of the transmission time is “T12a <T12b <T12c”, and the wireless security sensor The sensor detection signal S2a transmitted by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 that constitutes the terminal 2a is given top priority, and wirelessly transmitted from the transmission circuit 110 of the sensor wireless communication unit 11 that constitutes the wireless security sensor terminal 2b. The sensor detection signal S2b transmitted by communication and the sensor detection signal S2c transmitted by wireless communication from the transmission circuit 110 of the sensor wireless communication unit 11 constituting the wireless security sensor terminal 2c are shown in FIG. Will be received by the receiving circuit 300 of the master wireless communication unit 30 constituting the to the master terminal 3 in a state there is no collision of stable.

  The master control unit 34 of the master terminal 3 shown in FIG. 3 simultaneously performs sensor detection operations for various security abnormalities in the security sensor units 10 of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. When the sensor detection signal S2a received by the receiving circuit 300 of the master wireless communication unit 30 is input at the timing after the elapse of the transmission time T12a from the start of the above-described timing, it is added to the sensor detection signal S2a. Based on the security abnormality information and the terminal ID, various security abnormality alarms and alarm indications detected by the security sensor unit 10 of the wireless security sensor terminal 2a are displayed as an alarm unit 31 and a master display unit 32. Is used to generate a confirmation signal S12a to which the terminal ID of the wireless security sensor terminal 2a is added to generate a master wireless signal. It transmits by the wireless communication from the transmission circuit 301 of the communication unit 30, and transmits it to the sensor control unit 16b via the reception circuit 111 of the sensor wireless communication unit 10 constituting the plurality of wireless security sensor terminals 2a, 2b, 2c. .

  The sensor control units 16b of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. 2 (B) are respectively connected to the terminal ID added to the confirmation signal S12a transmitted from the master terminal 3 by wireless communication. Various security anomalies detected by the security sensor unit 10 are normally alarmed and issued by the master terminal 3 only when the IDs of the self-wireless security sensor terminals are collated and the collation results match. The confirmation display to the effect that it has been displayed can be performed using the sensor display unit 14. Here, only the sensor control unit 16b of the wireless security sensor terminal 2a matches the collation result, and the confirmation display using the sensor display unit 14 is performed.

  Also, the master control unit 34 of the master terminal 3 shown in FIG. 3 performs various security abnormality sensor detection operations in the security sensor units 10 of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. Is input when the sensor detection signals S2b and S2c sequentially received by the receiving circuit 300 of the master wireless communication unit 30 are input at the timing after the elapse of the transmission times T12c and T12d described above from Based on security abnormality information and terminal ID added to the sensor detection signals S2b and S2c, various security abnormality alarms and alarm indications detected by the security sensor unit 10 of the wireless security sensor terminal 2b , A warning alarm and a warning display of a security abnormality detected by the security sensor unit 10 of the wireless security sensor terminal 2c are displayed on the alarm unit 31 and The master display unit 32 is used to correspond to the time difference between the transmission times T12c and T12d described above, and the confirmation signal S12b to which the terminal IDs of the wireless security sensor terminals 2b and 2c are respectively added at the timing of this time difference, S12b is generated and transmitted by wireless communication from the transmission circuit 301 of the master wireless communication unit 30, via the reception circuit 111 of the sensor wireless communication unit 11 constituting a plurality of wireless security sensor terminals 2a, 2b and 2c. The data is transmitted to the sensor control unit 16b.

  Further, among the plurality of wireless security sensor terminals 2a, 2b and 2c shown in FIG. 2B, the sensor control unit 16b of the wireless security sensor terminals 2a and 2b is respectively a sensor of the wireless security sensor terminal 2a. As with the control unit 16b, since the collation result of the terminal ID added to the confirmation signals S12b and S12c transmitted from the master terminal 3 by wireless communication matches the terminal ID of the own wireless security sensor terminal, The sensor display unit 14 can be used to confirm that various security abnormalities detected by the sensor unit 10 have been normally issued and displayed on the master terminal 3.

  In the above description, as an example of the timing of transmission times T12a, T12b, and T12c determined by the sensor control units 16b of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. Although the sensor detection signal from the wireless security sensor terminal having a small illuminance value detected by the illuminance sensor 17 is given top priority, the timing corresponding to the magnitude of the illuminance value is applied. It is not limited to timing. For example, in an aspect in which the illuminance sensor 17 is inadequate for the plurality of wireless security sensor terminals, (optional) times T2a, T2b, and T2c timed by the timekeeping unit 12 set by the setting unit 13 are Multiple wireless security sensor terminals only need to be different so that “T2a ≠ T2b ≠ T2c”, and collision of sensor detection signals S2a, S2b, S2c at the time of simultaneous sensor detection is prevented, and stability is improved. Wireless communication to the master terminal 3 can also be performed in the state.

  In the above description, various security abnormality sensor detection operations in the security sensor units 10 of the plurality of wireless security sensor terminals 2a, 2b, and 2c shown in FIG. 2B are started at the same timing. The transmission times T12a, T12b, and T12c at the time have been described. After the transmission times T12a, T12b, and T12c have elapsed, the sensor detection signals S2a, S2b, and S2c generated by the sensor control unit 16b are again transmitted to the sensor wireless communication unit 11. As for the time interval from the transmission circuit 110 to the master terminal 3 for re-transmission, the illuminance at any time for each of the plurality of wireless security sensor terminals timed by the time measuring unit 12 set by the setting unit 13 An illuminance value indicating the brightness in the vicinity of the wireless security sensor terminal detected by the sensor 17 (the time converted based on the value) is multiplied by the sensor control unit 16b. It determined the time interval T22a, T22b, can be T22C. By the time intervals T22a, T22b, and T22c, collision of the sensor detection signals S2a, S2b, and S2c at the time of retransmission can be prevented, and wireless communication to the master terminal 3 can be performed with improved stability.

  Finally, the wireless security sensor device of the present invention has been described with a specific embodiment. However, the present invention is not limited to this embodiment, and any configuration known so far as long as the effect of the present invention is achieved. It goes without saying that even a wireless security sensor device can be adopted.

  Specifically, the plurality of wireless security sensor terminals are not limited to three (1a, 1b, 1c, 2a, 2b, 2c) as in the above-described embodiment, but two or more. If there are, a plurality of wireless security sensor terminals can be applied.

  When the master terminal 3 is provided with a function of alarm transmission to the outside of a server or the like as shown by a broken line in FIG. 3, a plurality of wireless systems detected by the master control unit 34 are provided. The security sensor terminals 1a, 1b, 1c, 2a, 2b, and 2c of the security sensor terminals 10 are connected to various security abnormalities that are detected via an external network such as the Internet or a public LAN. For example, the alarm can be transferred to a predetermined organization such as a police station or a security company.

  Furthermore, as a configuration of the plurality of wireless security sensor terminals 1a, 1b, 1c, 2a, 2b, and 2c, a configuration in which an alarm notification function is incomplete, that is, shown in FIGS. 2 (A) and (B). Not only is the wireless security sensor terminal lacking the sensor display unit 14 suitable, but also a reporting unit (not shown) that outputs not only the sensor display unit 14 but also an alarm sound, a confirmation sound, a voice message, and the like. The wireless security sensor terminal having an alarm issuing function provided with is also suitable.

FIG. 1 is a block diagram showing an overall configuration of a wireless security sensor device according to an embodiment of the present invention. FIG. 2A is a block diagram showing a specific configuration of the first aspect of a plurality of wireless security sensor terminals in the wireless security sensor device according to the embodiment of the present invention. FIG. 2B is a block diagram showing a specific configuration of the second aspect of a plurality of wireless security sensor terminals in the wireless security sensor device according to the embodiment of the present invention. FIG. 3 is a block diagram showing a specific configuration of the master terminal in the wireless security sensor device according to the embodiment of the present invention.

Explanation of symbols

1a, 1b, 1c, 2a, 2b, 2c ... Multiple wireless security sensor terminals 16a, 16b ... Sensor control unit (control unit)
17 …… Illuminance sensor 110 …… Transmission circuit 111 …… Reception circuit 3 …… Master terminal 300 …… Reception circuit 301 …… Transmission circuit

Claims (4)

A plurality of wireless security sensors having a transmission circuit (110) for transmitting a sensor detection signal by wireless communication at the time of sensor detection and a reception circuit (111) for receiving a confirmation signal of the sensor detection signal by the wireless communication A terminal (1a, 1b, 1c, 2a, 2b, 2c), a reception circuit (300) for receiving the sensor detection signal transmitted from the wireless security sensor terminal by the wireless communication, and the confirmation signal. A master terminal (3) having a transmission circuit (301) for transmitting to the wireless security sensor terminal by the wireless communication;
The wireless security sensor terminal includes a time measuring unit (12) for measuring a time from when the sensor is detected until the sensor detection signal is transmitted by the wireless communication, and a time measured by the time measuring unit. A wireless security sensor device comprising: a setting unit (13) for arbitrarily setting each security sensor terminal.   The wireless security sensor terminal periodically acquires the electric field strength of the wireless communication performed with the master terminal, and the time set by the setting unit is multiplied by the acquired electric field strength value. The wireless security sensor device according to claim 1, further comprising a control unit (16a) for determining a transmission time.   The wireless security sensor terminal is detected by the illuminance sensor (17) for detecting the brightness in the vicinity of the periphery of the wireless security sensor terminal and the illuminance sensor at a time set by the setting unit. The wireless security sensor device according to claim 1, further comprising a control unit (16b) for determining a transmission time based on a time when the illuminance value is multiplied.   The control unit of the wireless security sensor terminal, based on a time obtained by multiplying the time set by the setting unit by the acquired electric field intensity value or the illuminance value detected by the illuminance sensor. The wireless security sensor device according to claim 2 or 3, wherein a time interval until the detection signal is retransmitted to the master terminal by the wireless communication is determined.

Images