KR100353495B1 - crime prevention system for a window - Google Patents

Abstract

The present invention discloses a security window system that enables to combat the external intrusion through the furniture-specific windows of the building in advance.

According to the present invention, each window (WD) of the building detects an external intruder, a human body sensor 110, an infrared sensor 120, a switch 130 connecting the detection signals of the sensor 110 and 120, and Intrusion detection and transmission system 100 comprising a wireless transmission unit 140 for wirelessly transmitting the code transmitted through the switch unit 130, the building indoors wireless transmission unit 140 of the transmission system (100) The home switch unit controls the operation of the home automation 400 and the operation of the alarm siren unit 240 according to the output signal of the wireless receiver 210 and the wireless receiver 210 for receiving and decoding the wireless signal transmitted from the wireless receiver. And a central processing system 200 consisting of 220. Operation performed when an intrusion is received by the central processing system 200 may be controlled on / off according to a switch operation of the remote control transmitter 300 which wirelessly transmits a remote controller signal to the wireless receiver 210.

Description

Wire / wireless security window system {crime prevention system for a window}

The present invention relates to a security window system suitable for use in homes or offices, and more specifically, the external intrusion situation through a plurality of windows of the building is generated as a detection signal by the various types of sensors installed outside each window The present invention relates to a security window system that implements a function for combating external intrusions such as an alarm by transmitting a detection signal of sensors to a central processing system in a room by wireless transmission and reception.

The windows are made of aluminum or synthetic resin and are constructed as balconies of apartments or windows of office buildings to provide a pleasant indoor environment by insulation and sound insulation, and recently, crimes such as theft by intrusions through windows besides doors. Accidents are frequent.

As such, in order to prevent intrusion through windows and doors, it is necessary to install a security alarm system in the windows as well as the doors.

There are various known security alarm systems, but there are largely classified online real-time monitoring devices by security service providers, and a single alarm device installed and used by a user at an appropriate place.

However, it is pointed out that the online real-time monitoring device has a large economic burden, such as the need to continuously pay the service fee during the use period, the alarm of the single product can not implement a reliable security cost because the monitoring area is limited. Have

In addition, the above-described conventional security alarm system has a problem that can not be eliminated before the bar is detected only after the intrusion occurs through the window.

The present invention devised to solve this problem is to provide a security window system that can combat the intrusion through a plurality of windows provided in the building in advance, to achieve the object of the present invention described above The present invention will be described in detail with reference to the embodiments based on the accompanying drawings.

1 is a block diagram showing a system configuration of the present invention;

Figure 2 is a plan sectional view of a window and window schematically showing the installation state of the sensors according to the present invention,

3 is a circuit diagram showing a configuration of two sensor units according to the present invention;

4 is a circuit diagram showing a configuration of a switch unit according to the present invention;

5 is a circuit diagram showing the configuration of a wireless transmission unit according to the present invention;

6 is a circuit diagram showing a configuration of a remote control transmitter according to the present invention;

7 is a circuit diagram showing a configuration of a wireless receiver according to the present invention;

8 is a circuit diagram showing a configuration of a home switch unit according to the present invention;

Explanation of symbols on the main parts of the drawings

WD-Window SR1-Pyroelectric Sensor

SR2a-Transmitter SR2b-Receiver

100-Intrusion detection transmission system 110-Human body detection sensor

120-infrared sensor unit 130-switch unit

140-Wireless Transmitter 150-Alarm Siren

200-Central Processing System 210-Wireless Receiver

220-Home switch section 230-External connection terminal section

240-Alarm siren part 300-Remote control transmitter part

400-External device

1 is a block diagram showing a system configuration of the present invention, Figure 2 is a plan sectional view of a window and window schematically showing the installation state of the sensors according to the present invention.

1 and 2, the present invention is a security window system that detects an external intrusion individually provided to a plurality of windows in the building individually and processes the detected signal to give an alarm, the intrusion detection transmission for each of the windows (WD) The system 100 is provided, and each room of each building has a signal received from the intrusion detection transmission system 100 in an integrated manner to generate an alarm and simultaneously transmit a signal to the external device 400. A central processing system (200) is provided, and a remote control transmitter (300) for generating a remote control signal for wirelessly transmitting the on / off operation of the central processing system (300).

The intrusion detection transmission system 100 is a human body detection sensor unit 110 for detecting the body heat of the external intruder approaching the window (WD), and the transmission unit is installed on both sides of the outside of the window (WD) and transmits infrared light An infrared sensor unit 120 configured to detect an intruder in proximity to the window WD, and a detection setting and a release detection setting according to a user's operation. A switch unit 130 having a switch and outputting a detection signal of the human body sensor 110 and a detection signal of the infrared sensor unit 120 to a rear end when the detection setting of the setting switch is selected, and the switch unit 130. It consists of a wireless transmitter 140 for wirelessly transmitting the detection signal output from the.

The central processing system 200 receives and demodulates the wireless transmission signal of the wireless transmitter 140 and the remote controller transmitter 300 that transmits a user operation. In the wireless receiver 210 for outputting a detection signal, the home switch 220 for connecting the output signal of the wireless receiver 210 to the rear end according to the operation mode of the remote control signal, and the home switch 220 External connection terminal 230 for connecting the output signal to the external device 400, such as home automation, and the alarm siren 240 for generating an alarm siren according to the signal output from the home switch unit 220 do.

The present invention may further configure the alarm siren unit 150 connected to the rear end of the switch unit 130, in this case, to generate a separate alarm siren for each window (WD).

3 is a circuit diagram showing the configuration of two sensor units according to the present invention.

A circuit configuration of the human body sensor 110 and the infrared sensor 120 will be described with reference to FIG. 3.

The human body sensor 110 includes a pyroelectric sensor SR1 for generating a pulse signal according to human body heat detection, an amplifier 112 for amplifying an output signal of the pyroelectric sensor SR1, and the amplification. The set voltage output unit 114 outputs a predetermined voltage by comparing the output signal of the unit 112 with the reference voltage Vref1, and the voltage output from the set voltage output unit 114 is referred to as the reference voltage Vref2. Comparing unit with a comparison unit 116 for outputting a stabilized logic signal, and a transistor (Q1) for switching the current of a predetermined voltage to the rear stage in accordance with the output of the comparison unit 116. The human body sensor 110 is preferably installed in a pair of two each one of the two windows per window (WD) on the basis of the size of a typical building window for the detection reliability.

The transmitter 120a of the infrared sensor unit 120 includes an oscillator 122 for oscillating a signal having a predetermined frequency (38KHZ), and a current driver for intermittently supplying current according to an oscillation signal output from the oscillator 122. 124 and a light transmitting element SR2a for transmitting infrared light having a predetermined wavelength by the current supplied through the current driving unit 124, and the receiving unit 120b of the infrared sensor unit 120 includes: A light receiving element SR2b for receiving the infrared light emitted from the light transmitting element SR2a and outputting an electrical signal proportional to the amount of light received, and comparing the output signal of the light receiving element SR2b with a reference voltage Vref3 to provide a logic signal. It consists of a comparator U5 for outputting.

4 is a circuit diagram showing the configuration of a switch unit according to the present invention.

Referring to FIG. 4, the switch unit 130 may include a first switch S1 for connecting the main power of the TTL level output from the constant voltage unit 132 to a rear end according to a user operation, and the human body sensor unit ( A second switch S2 for connecting the output signal of the 110 and the output signal of the infrared sensor unit 120 to a rear end according to a user's operation, and the sensor units 110 and 120 applied through the second switch S2. Relay means (K1) for connecting the power supplied through the first switch (S1) in accordance with the output signal of the wireless transmitter 140.

5 is a circuit diagram showing the configuration of a wireless transmitter according to the present invention.

The configuration of the wireless transmitter 140 will be described with reference to FIG. 5. The wireless transmitter 140 includes an address code generator 142 for generating an address code of a plurality of bits, and the switch unit 130. A data code generator 144 for generating a data code consisting of a plurality of bits for transmitting an external intrusion situation according to an applied detection signal, and a data code generated by the data code generator 144 in combination with the address code The encoder IC3 is encoded, and a high frequency modulation and transmission unit 148 modulates the encoded signal with a predetermined high frequency signal oscillated by the oscillator 146 and transmits the radio signal through the antenna ANT1. The data code generated by the data code generator 144 may be set by the dip switch DSW1, or may be set by a soldering connection that shorts the bit lines and omits the configuration of the dip switch DSW1. Unexplained symbol LED2 is a lamp that lights up when a signal is input from the switch unit 130 when an intrusion occurs.

6 is a circuit diagram showing the configuration of a remote control transmitter according to the present invention.

Referring to FIG. 6, the remote controller transmitter 300 may distinguish between an address code generator 302 for generating an address code of a plurality of bits and a remote controller on / off operation according to operations of the remote controller switches S3 and S4. A data code generator 304 for generating a plurality of bits of data codes, an encoder IC4 for combining the data code generated by the data code generator 304 with the address code, and the encoder IC4. In this case, the high frequency modulation and transmission unit 308 modulates the signal encoded by the high frequency signal oscillated by the oscillator 306 and transmits the radio signal through the antenna ANT2.

At this time, the encoder IC3 of the wireless transmitter 140 and the remote controller transmitter 300 have the same internal diagram of the encoder IC3, and a plurality of bits inputted to the encoder IC3 of the wireless transmitter of an external intrusion. The data code of and the plurality of bit data codes input to the encoder IC4 when the on signal remote controller switch S3 and the off signal remote controller switch S3 are operated are different from each other. Only when the wireless receiver 210 can distinguish whether the remote control is on or off or intrusion occurs as a data code.

In addition, the high frequency signal oscillated by the oscillator 146 of the wireless transmitter 140 and the high frequency signal oscillated by the oscillator 306 of the remote controller transmitter 300 have the same frequency.

In FIG. 6, reference numeral BAT is a battery, and LED2 is a lamp that is turned on as a signal is input by the generation of a data code from the switches S3 and S4 when the remote controller is turned on or off.

7 is a circuit diagram showing the configuration of a wireless receiver according to the present invention.

Referring to FIG. 7, the wireless receiver 210 includes a high frequency amplifier 212 for amplifying a wireless signal received through an antenna ANT3, and the wireless transmitter of the signals amplified by the high frequency amplifier 212. A tuning unit 213 for tuning a radio signal transmitted from the high frequency modulation and transmission unit 148 of 140 and a radio signal transmitted from the high frequency modulation and transmission unit 308 of the remote control transmitter 300, and the tuning unit ( A demodulator 214 for demodulating and outputting a signal output from the encoder IC3 of the wireless transmitter 140 and the encoder IC4 of the remote controller transmitter 300 by demodulating the output signal tuned by 213. The low frequency amplifier 215 for amplifying the coded signal demodulated by the demodulator 214 and the coded signal amplified by the low frequency amplifier 215 are decoded based on the address code generated by the address code generator 216. Day of the wireless transmitter 140 According to the presence or absence of the data code generated by the code generator 144, and outputs an alarm signal for notifying the external intrusion situation, and whether or not the data code generated by the data code generator 304 of the remote control transmitter 300 Accordingly, the decoder IC5 outputs a remote control operation signal for informing the remote control on / off operation state.

8 is a circuit diagram showing a configuration of a home switch unit according to the present invention.

Referring to FIG. 8, the home switch unit 220 has an external intrusion situation output from the decoder IC5 of the wireless receiver 210 according to a remote control operation signal output from the decoder IC5 of the wireless receiver 210. According to the output signal to inform the configuration of the relay means (K3) to control the connection of the external device (400).

Effects of the present invention configured as described above will be described in detail based on the specific configuration shown in the accompanying circuit diagrams.

First, when there is no intruder around the window (WD), since the generation of the electrical signal is very weak in the pyroelectric sensor (SR1) of the human body sensor 110 shown in Figs. Since the signal voltage applied to the set voltage output unit 114 is also weak, the set voltage output unit 114 outputs a low level signal, and accordingly, the output of the comparator 116 is also turned low to turn off the transistor. The voltage at the output terminal a connected to the emitter at Q1 goes low.

However, when the intruder approaches the window (WD), the pyroelectric sensor (SR1) of the human body sensor 110 detects the heat emitted from the human body of the approaching intruder and outputs an electrical signal, such an electrical signal Is input to the non-inverting terminal of the OP amplifier U1 of the amplifier 112 connected to the rear end of the pyroelectric sensor SR1 and amplified by a high gain by a gain set by the resistors R6 and R7 connected to the inverting terminal. After that, it is input to the inverting terminal of the comparator U2 of the set voltage output unit 114 through the coupling capacitor C4. When the input signal is larger than the reference voltage Vref1 applied to the non-inverting terminal of the comparator U2 due to the intruder detection, the comparator U2 is connected to the resistors R9 and R10 and the capacitor C5 which are feedback loops. The output voltage is amplified by the gain set by the output voltage, and the output voltage becomes higher than the reference voltage Vref2 input to the inverting terminal of the comparator U3 constituting the comparator 116, so that the comparator U3 is at a high level. The transistor Q1 is turned on by outputting a signal such that the collector-side voltage of the transistor Q1 is energized to the emitter, so that the voltage of the output terminal a connected to the emitter becomes high level.

On the other hand, if the intruder approaches the window (WD), such as damage to the glass window very close, it is transmitted from the transmitting unit (SR2a) of the transmitting unit 120a side of the infrared sensor unit 120, the light receiving element (receiving unit 120b side) ( The infrared light received by SR2b) is blocked by the intruder body, and the light receiving element SR2b outputs a low level signal and applies it to the non-inverting terminal of the comparator U5. The low level signal is supplied to the comparator U5. Since the comparator U5 outputs a high level signal to turn on the transistor Q4 because the voltage is lower than the reference voltage Vref3 applied to the inverting terminal of the output terminal b, the output terminal b connected to the emitter side of the transistor Q4 is therefore turned on. Becomes high level by the voltage which energized the transistor.

In the accompanying drawings, an output terminal for outputting a signal and an input terminal for receiving the output signal are denoted by the same reference numerals in order to easily understand the connectivity between the drawings.

The signals of the output terminals a and b of the sensor units 110 and 120 are input to the input terminals a and b of the switch unit 130 shown in FIG. 4. The output signal of the second human body sensor 110 ', not shown, is input to the one input terminal a ′ of the switch unit 130. The second human body sensor 110 'is one of two human body sensor installed in the window (WD) as described in the configuration of the human body sensor.

These signals are applied to one end of the switch S2 through the diodes D1, D2, and D3 connected in the forward direction, and when the signal of any one of the signals of the sensor units 110, 110 ', and 120 is at a high level. The signal applied to S2 is at a high level. This high level signal magnetizes the coil K1a of the relay K1 in the on-operation state of the switch S2 to turn on the movable contact K1b, thereby directing the DC 12V input to the TTL level constant voltage. The output voltage of the constant voltage circuit 132 which is transformed and outputted to DC 5V is a high level logic signal via the movable contact K1b of the relay K1 through the output terminal d as shown in FIG. Is applied to the dip switch DSW1 of the data code generator 144.

The dip switch DSW1 of the data code generator 144 generates 4-bit code data by changing logic levels input to pins 10, 11, 12, and 13 of the encoder IC3 according to a setting state.

The address code generator 142 of the data code generator 144 generates a predetermined address code based on a connection state with pins 1 to 8 of the encoder IC3, and the encoder IC3 is connected to the address code. The coded signal generated by combining the data codes is output to pin 17 and applied to the base of the transistor Q5 constituting the high frequency modulation and amplifying unit 148, and the high frequency modulation and amplifying unit 148 is the encoder IC3. ) Is modulated with the high frequency signal oscillated by the oscillation circuit 146 to wirelessly transmit through the antenna ANT1. The oscillation circuit 146 oscillates a high frequency signal of a carrier frequency by the multiple capacitors C14, C15, C16, and VC1 connected between the emitter and the base of the transistor Q5, and by the variable capacitor VC1. The carrier frequency can be adjusted.

The operation of transmitting a radio signal from the remote control transmitter 300 shown in FIG. 6 is also similar to the operation of the wireless transmitter 140, and a data code capable of distinguishing a remote control operation different from a data code generated only when an intrusion occurs. The point of transmission is different.

As described above, the radio signal transmitted from the radio transmitter 140 or the radio signal transmitted from the remote controller 300 is received through the antenna ANT1 of the radio receiver 210 shown in FIG. After the amplified signal is tuned by the tuner 213 and demodulated by the demodulator 214. The demodulated signal is amplified by the low frequency amplifier 215 and input to pin 14 of the decoder IC5.

The decoder IC5 decodes the input coded signal by the address code generated by the address code generator 216 and determines whether the data code generated by the data code generator 144 of the wireless transmitter 140 is present. Accordingly, a signal for notifying an external intrusion situation is output to the output terminal h, and for informing a remote controller on / off operation state according to the presence or absence of a data code generated by the data code generator 304 of the remote controller transmitter 300. The remote control operation signal is output to the output terminals e and f.

Among the output signals of the decoder IC5 thus output, the remote controller on signal is input to pin 2 of the timer integrated device IC6 through the output terminal e, and the remote controller off signal is output to the output terminal f. It is input through pins 5, 6 and 7 of the timer integrated device IC6 constituting the home switch unit 220 shown in FIG.

The timer integrated device IC6 outputs a low level signal to pin 3 when the remote controller ON signal is input, thereby turning off the transistor Q9, and thus the movable contact K3a of the relay K3 is connected to the wireless receiver. The intrusion alarm signal output through the output terminal h of 210 is applied to the base of the transistor Q10 to turn on the transistor Q10. Accordingly, the relay K4 turns on the movable contact K4b to turn on the direct current. 12V power is applied to one side terminal of the external connection terminal unit 230 connected to the alarm siren unit 240 and the external device 400 home automation to generate an alarm siren indicating an external intrusion and to cope with the intrusion in the home automation. Let the operation of

In addition, when the remote controller OFF signal is input to pin 7, the timer integrated device IC6 outputs a high level signal to pin 3 to turn on the transistor Q9, thereby enabling the movable contact K3a of the relay K3. The output signal of the wireless receiving unit 210 applied to the base of the transistor Q10 is blocked through the above, thereby stopping the alarm siren generated from the alarm siren unit 240 and both sides of the external connection terminal unit 230. The terminal is short-circuited to interrupt the operation of home automation.

On the other hand, when the alarm signal notifying the occurrence of intrusion through the output terminal (h) of the wireless receiver is not normally input to the relay K3 of the home switch unit 220, the alarm siren and the home automation are of course not operated.

As described above, the security window system of the present invention is capable of pre-treatment by detecting and alerting an external intruder who attempts to intrude through windows of an apartment or a building before the window passes, and in particular, a sensor installed in each window. Since the detection signal of these systems can be integrated in the central processing system to operate the alarm siren and home automation, etc., it is possible to implement a more reliable security alarm function than the separately installed security alarm device.

Claims (12)

A security window system that individually detects an external intrusion and provides an alarm by integrating the detected signals, and has an intrusion detection transmission system 100 for each of the windows (WD). A remote control system including a central processing system 200 for integrally receiving and processing the transmission signals of each intrusion detection transmission system 100, and generating and transmitting a remote control signal for turning on and off the operation of the central processing system. Having a transmitter 300, The intrusion detection transmission system 100, the human body sensor for detecting the heat of the external intruder approaching the window (WD) sensor unit 110; Infrared sensor unit 120 installed on both sides of the outside of the window (WD) and composed of a transmitting unit (120a) for transmitting infrared light and a receiving unit (120b) for receiving the transmitted infrared light to detect an intruder near the window (WD) Wow; It has a setting switch to enable detection setting and detection release setting according to a user's operation, and when the detection setting of the setting switch is selected, the detection signal of the human body sensor 110 and the detection signal of the infrared sensor 120 are rearwarded. An output switch 130; A wireless transmitter 140 for wirelessly transmitting the detection signal output from the switch unit 130, The central processing system 200 receives and demodulates the wireless transmission signal of the wireless transmitter 140 and the remote controller transmitter 300 that transmits a user operation. A wireless receiver 210 for outputting a detection signal; A home switch unit 220 for connecting the output signal of the wireless receiver 210 to a rear end according to an operation mode of the remote control signal; An external connection terminal unit 230 for connecting the signal output from the home switch unit 220 to the external device 400; Security door system, characterized in that consisting of the alarm siren unit 240 for generating an alarm siren according to the signal output from the home switch unit 220. The apparatus of claim 1, wherein the human body sensor 110 comprises: a pyroelectric sensor SR1 for generating a pulse signal according to human body heat detection, and an amplifier for amplifying an output signal of the pyroelectric sensor SR1. 112 and a set voltage output unit 114 for outputting a predetermined voltage by comparing the output signal of the amplifier 112 with a reference voltage Vref1, and a voltage output from the set voltage output unit 114. Is compared with the reference voltage (Vref2) and outputs a stabilized logic signal and a transistor Q1 for switching the current of a predetermined voltage to the rear stage in accordance with the output of the comparison unit 116 Security window system made with. According to claim 1, The transmitting unit 120a of the infrared sensor unit 120, An oscillator 122 for oscillating a signal of a predetermined frequency 38KHZ, a current driver 124 for intermittently supplying current according to an oscillation signal output from the oscillator 122, and the current driver 124. Composed of a transmitting element SR1a which transmits infrared light having a predetermined wavelength by the supplied current, The receiving unit 120b of the infrared sensor unit 120 receives the infrared light emitted from the light transmitting element SR1a and outputs an electrical signal proportional to the amount of received light, and the light receiving element SR2b. Security window system comprising a comparator (U5) for outputting a logic signal by comparing the output signal of the reference voltage (Vref3). The method of claim 1, wherein the switch unit 130, the first switch (S1) for connecting the main power of the TTL level output from the constant voltage unit 132 to the rear end according to the user operation and the human body sensor unit ( A second switch S2 for connecting the output signal of the 110 and the output signal of the infrared sensor unit 120 to a rear end according to a user's operation, and the sensor units 110 and 120 applied through the second switch S2. Security door system characterized in that it comprises a relay means (K1) for connecting the power supplied through the first switch (S1) in accordance with the output signal of the wireless transmitter (140). The apparatus of claim 1, wherein the wireless transmitter 140 transmits an external intrusion situation according to an address code generator 142 for generating a plurality of bits of an address code, and a detection signal applied from the switch unit 130. A data code generation unit 144 for generating a plurality of bits of data codes, an encoder IC3 for combining the data code generated by the data code generation unit 144 with the address code, and the encoded A security window system comprising a high frequency modulation and transmission unit (148) for modulating a signal with a predetermined high frequency signal oscillated by the oscillation unit (146) and wirelessly transmitting it through an antenna (ANT1). The remote controller transmitter 300 of claim 5, wherein the remote controller transmitter 300 can distinguish between an address code generator 302 for generating a plurality of bits of address codes and a remote controller on / off operation according to operations of the switches S3 and S4. A data code generator 304 for generating a plurality of bits of data code, an encoder IC4 for encoding the data code generated by the data code generator 304 in combination with the address code, and the encoder IC4. And a high frequency modulation and transmission unit (308) for modulating the signal encoded in the radio frequency signal oscillated by the oscillator (306) and transmits through the antenna (ANT2). The wireless receiver of claim 6, wherein the wireless receiver 210 includes a high frequency amplifier 212 for amplifying a wireless signal received through the antenna ANT3 and a signal amplified by the high frequency amplifier 212. A tuning unit 213 for tuning a radio signal transmitted from the high frequency modulation and transmission unit 148 of 140 and a radio signal transmitted from the high frequency modulation and transmission unit 308 of the remote control transmitter 300, and the tuning unit ( A demodulator 214 for demodulating and outputting a signal output from the encoder IC3 of the wireless transmitter 140 and the encoder IC4 of the remote controller transmitter 300 by demodulating the output signal tuned by 213. The low frequency amplifier 215 for amplifying the coded signal demodulated by the demodulator 214 and the coded signal amplified by the low frequency amplifier 215 are decoded based on the address code generated by the address code generator 216. Day of the wireless transmitter 140 According to the presence or absence of the data code generated by the code generator 144, and outputs an alarm signal for notifying the external intrusion situation, and whether or not the data code generated by the data code generator 304 of the remote control transmitter 300 Security window system comprising a decoder (IC5) for outputting a remote control operation signal for informing the remote control on / off operation state. The external intrusion situation of claim 7, wherein the home switch unit 220 is output from the decoder IC5 of the wireless receiver 210 according to a remote controller operation signal output from the decoder IC5 of the wireless receiver 210. Security window system comprising a relay means (K3) to control the connection of the external device 400 according to the output signal to inform the. The system of claim 7, wherein the high frequency signal oscillated by the oscillator 146 of the wireless transmitter 140 and the high frequency signal oscillated by the oscillator 306 of the remote controller transmitter 300 are the same frequency. . The security window system according to claim 1, further comprising an alarm siren unit (150) for generating an alarm in accordance with the output signal of the switch unit (130). The method of claim 1, wherein the body detection sensor unit (110) is a security window system, characterized in that provided with two per window (WD). 9. The security window system according to claim 8, wherein the external device (400) is home automation.