Security system for windows

• US 6,885,301 B2
• Filed: 08/06/2001
• Issued: 04/26/2005
• Est. Priority Date: 11/28/2000
• Status: Expired due to Fees

• Current Assignee: Windowcom E&C Corporation Limited
• Original Assignee: Windowcom E&C Corporation Limited
• Inventors: Park, Joung-Seo
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): Walk, Samuel J.
• Application Number:
  US10/399,378
• Publication Number:
  US 20040012493A1
• Time in Patent Office: 1,359 Days
• Field of Search: 340/541, 340/545.1, 340/545.2, 340/545.3, 340/545.9, 160/10, 116/75, 116/86
• US Class Current: 340/541
• CPC Class Codes: G08B 13/19 using infrared-radiation detection systems G08B13/194 takes precedence
• CPC Class Codes: G08B 25/003 Address allocation methods and details
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence

Abstract

A security system for detecting and expelling external intrusions at individual windows is provided. The security system includes an intrusion detection transmission system (100) having a human body detection sensor (110), an infra-red sensor (120), a switching unit (130) for connecting the detection signals from the sensors (110 and 120), and a wireless transmitter (140) for encoding and wirelessly transmitting the signal transmitted from the switching unit (130), and a central processing system (200) including a wireless receiver (210) for receiving, and demodulating the wireless receiver (210) for receiving and demodulating the wireless transmission signals from the wireless transmitter (140) in the intrusion detection transmission system (100), and a home switching unit (220) for controlling operations of a home automation unit (400) and a warning siren portion (240) according to the outputting signal of the wireless receiver (210). The operation of the central processing system (200) which operates at the time of occurrence of intrusion can be controlled according to the switching operation of a remote controller transmitter (300) which wirelessly transmits a remote controller signal to the wireless receiver (210).

Claims

1. A security system for detecting external intrusions at individual windows which are constructed in numbers in a building and integrally processing the detected signals to thereby make alarms, the security system comprising:

an intrusion detection transmission system (100) provided in each window (WD);

a central processing system (200) provided in each home indoor place of the building, for integrally receiving and processing the transmission signals from the intrusion detection transmission system (100); and

a remote controller transmitter (300) for generating and Tirelessly transmitting a remote controller signal for turning on or off operations of the central processing system (200),

wherein said intrusion detection transmission system (100) comprises;

a human body detection sensor (110) for detecting heat radiated from an external intruder reaching a window (WD);

an infra-red sensor (120) having a transmitter (120a) for transmitting infra-red light and a receiver (120b) for receiving the transmitted infra-red light, both of which are installed in respective outdoor sides of the window (WD), for detecting the intruder reaching the window (WD);

a switching unit (130) having a setting switch so that both a detection setting and a detection release setting are possible according to manipulation of a user, for outputting a detection signal from the human body detection sensor (110) and a detection signal from the infra-red sensor (120) during selection of the detection setting in the setting switch; and

a wireless transmitter (140) for wirelessly transmitting the detection signal output from the switching unit (130), and

wherein said central processing system (200) comprises;

a wireless receiver (210) for receiving and demodulating the wireless transmission signals from the wireless transmitter (140) which is configured in correspondence to each window (WD) and the remote controller transmitter (300) for transmitting a user manipulation, and outputting detection signals from the sensors (110 and 120);

a home switching unit (220) for connecting the outputting signal of the wireless receiver (210) to a post-end of the home switching unit (220) according to a control mode from the remote controller transmitter (300);

an external connection terminal (230) for connecting the output signal from the home switching unit (220) to an external apparatus (400); and

a warning siren portion (240) for generating a warning siren according to the output signal from the home switching unit (220).

2. The security system of claim 1, wherein said human body detection sensor (110) comprises:

a pyroelectric sensor (SR1) for generating a pulse signal according to detection of a human body temperature;

an amplifier (112) for amplifying the output signal from the pyroelectric sensor (SR1);

a setting voltage outputter (114) for comparing the output signal from the amplifier (112) with a reference voltage (Vref1) and outputting a predetermined setting voltage;

a comparator (116) for comparing the output voltage from the setting voltage outputter (114) with a reference voltage (Vref2) and outputting a stabilized logic signal; and

a transistor (Q1) for switching a current at a predetermined voltage to a post-end according to the output from the comparator (116).

3. The security system of claim 1, wherein the transmitter (120a) in said infra-red sensor (120) comprises:

an oscillator (122) for oscillating a predetermined frequency signal of 38 KHz;

a current driver (124) for intermittently supplying a current according to the oscillating signal output from the oscillator (122); and

a light transmission element (SR2a) for transmitting infra-red light of a predetermined wavelength by the current supplied via the current driver (124), and

wherein the receiver (120b) in said infra-red sensor (120) comprises;

a light reception element (SR2b) for receiving infra-red light emitted from the light transmission element (SR2a) and outputting an electrical signal proportional with an amount of the received light; and

a comparator (U5) for comparing the output signal from the light reception element SR2b with a reference voltage (Vref3) and outputting a logic signal.

4. The security system of claim 1, wherein said switching unit (130) comprises:

a first switch (S1) for connecting a main power supply of a transistor-transistor logic (TTL) level output from a constant voltage source (132) to a post-end according to a user manipulation;

a second switch (S2) for connecting the output signal from the human body detection sensor (110) and the output signal from the infra-red sensor (120) to a post-end according to a user manipulation; and

a relay (K1) for connecting the power supply supplied via the first switch (S1) according to the output signals of the sensors (110a and 120) applied via the second switch (S2) to the wireless transmitter (140).

5. The security system of claim 1, wherein said wireless transmitter (140) comprises:

an address code generator (142) for generating an address code of a number of bits;

a data code generator (144) for generating a data code of a number of bits for transmitting an external intrusion situation according to the detection signal from the switching unit (130);

an encoder (IC3) combining the data code generated from the data code generator (144) with the address code generated from the address code generator (142) and encoding the combined code; and

a high-frequency modulation and transmission unit (148) for modulating the encoded signal with a predetermined high-frequency signal oscillating from the oscillator (146) and wirelessly transmitting the modulated signal via an antenna (ANT1).

6. The security system of claim 5, wherein said remote controller transmitter (300) comprises:

an address code generator (302) for generating an address code of a number of bits;

a data code generator (304) for generating a data code of a number of bits which can identify remote controller turn-on/turn-off operations according to manipulation of the remote controller switches (S3) and (S4);

an encoder (IC4) combining the data code generated from the data code generator (304) with the address code generated from the address code generator (302) and encoding the combined code; and

a high-frequency modulation and transmission unit (308) for modulating the encoded signal from the encoder (IC4) with a predetermined high-frequency signal oscillating from the oscillator (306) and wirelessly transmitting the modulated signal via an antenna (ANT2).

7. The security system of claim 6, wherein said wireless receiver (210) comprises:

a high-frequency amplifier (212) for amplifying a wireless signal received via an antenna (ANT3);

a tuner (213) for tuning the wireless signal transmitted from the high-frequency modulation and transmission unit (148) in the wireless transmitter (140) and the wireless signal transmitted from the high-frequency modulation and transmission unit (308) in the remote controller transmitter (300), among the amplified signal from the high-frequency amplifier (212);

a demodulator (214) for demodulating the signal tuned and output from the tuner (213) and introducing the generated encoded signal to the encoder (IC3) in the wireless transmitter (140) and the encoder (IC4) in the remote controller transmitter (300);

a low-frequency amplifier (215) for amplifying the demodulated encoded signal from the demodulator (214); and

a decoder (IC5) for decoding the amplified encoded signal from the low-frequency amplifier (215) based on an address code generated in an address code generator (216), and outputting a warning signal for notifying an external intrusion situation according to presence or absence of the data code generated from the data code generator (144) in the wireless transmitter (140) and simultaneously outputting a remote controller manipulation signal for notifying a remote controller turn-on or turn-off state according to presence or absence of the data code generated from the data code generator (304) in the remote controller transmitter (300).

8. The security system of claim 7, wherein said home switching unit (220) comprises:

a relay (K3) for respectively connecting and disconnecting the central processing system (200) to and from an external apparatus (400) according to an output signal for notifying an external intrusion situation output from the decoder (IC5) in the wireless receiver (210) according to the remote controller manipulation signal output from the decoder (IC5) in the wireless receiver (210).

9. The security system of claim 7, wherein the high-frequency signal oscillating in the oscillator (146) in said wireless transmitter (140) and that of the high-frequency signal oscillator in the oscillator (306) in the remote controller transmitter (300) have the same frequency.

10. The security system of claim 1, further comprising a warning siren portion (150) generating a warning signal according to the output signal from said switching unit (130).

11. The security system of claim 1, wherein said human body detection sensor (110) is installed in pair per each window (WD).

12. The security system of claim 8, wherein said external apparatus (400) is a home automation unit.