Attached to the family on the telephone circuit described in this article shall constitute theft of high practical intelligence alarm call device. Lock picking open or broken windows, whether the thief burglary crime, it can be monitored immediately to the designated telephone (office phone owner, security or police to call "110" emergency call) with voice Pirates of the situation and reported the incident location, or by individuals with text display in machine theft occurred in the situation in order to take corresponding measures.
Pirates of the situation throughout the device uses various types of alarm call the appropriate module (board), so the external circuit is very simple, stable and reliable, high performance and low cost. Static power consumption is very small machine that can be used for the power of ordinary batteries, not only affordable, but also improves the reliability of the alarm.
Work
Pirates of the situation the alarm circuit telephone device shown in Figure 1. It is mainly stolen from the probe circuit, automatic dial telephone circuits and voice generating circuit has three major components. Vibration for micro-chip module A1, A2 for the pyroelectric infrared detection module, which with the R1 ~ R3, C1 ~ C3 and VD1, VD2, VT1 and so constitute a probe Pirates of the circuit. External RC components A3 and then into a typical one-shot, it VT2, K, constitute a time delay relay call circuit. A4 for voice recording board, voice recorder alarm required, limited time 6s.
A1, A2 module outputs are equipped with simple time identification circuit (from R2, C2, and R3, C3 delay circuit) with the function of identifying the owner and the thief. When the owner opened, when closed, A1 by the vibration of less than 10s, although the A1 ? the foot of the high signal output = 10s, but the charging voltage across C2 reach 13V, VD1 can not turn on, the circuit does not work after class. This time, the owner can safely leave the door locked or open door into the house, will not trigger the alarm circuit. Similarly, the owner of the effective detection range in the A2 walking time is less than 5s, although A2 ? feet high output signal, but due to lack of C3 both ends of the charging voltage 1.3V, VD2 can not turn it, still does not work after the stage circuit. This 5s, the owner can be leisurely together with the power switch on the hidden SA left the room to go out or return home to enter the room off the power switch SA. A1, A2 to set the output delay circuit is another advantage is to avoid outside interference occasionally trigger false alarms caused by A1 or A2.
When the thief lock picking open the door, twice as long as the interval of continuous vibration signal 10s (or continuous vibration for longer than 10s) acting on the A1,, C2 both ends of the charging voltage is> 1.3V, VD1, VT1 has conduction, A3 ? feet to obtain a negative pulse trigger signal to the A3 into the monostable circuit composed of transient, the output of its ? foot-long delay in the high 60s, the R7-limiting, VT2 current is amplified to drive the relay K pull. Pick-K, its normally open contacts K1 ~ K3 are connected, K1 closed analog telephone hook; K2 can be connected to phone "one-click dial" emergency call button, so that automatically dial pre-stored phone a good number of the corresponding alarm call; K3 A4 repeatedly trigger the 6s warning issued prior voice input signal, so that monitoring can hear the phone pick up after the alarm voice over and over again, or sent to the owner of BP in Chinese portable machine, with Pirates of the text shows a monk in the situation. If the broken window, burglary or theft in a more sophisticated approach to the break in the 10s comes in, although the A1 failed to trigger the alarm circuit, but still set the second A2, "mark." As long as the thief in the effective detection range A2 move more than 5s, then the charging voltage across C3> 1.3V, the same turn to VT1, completion of the auto-dial phone alarm task. If the A3 within 60s after the trigger have fallen behind the busy through monitoring telephone calls (or calls through personal BP machine), as long as the activities do not stop the thieves, and automatically redial after every 60s to send again, until the owner or security personnel arrived at SA hidden switch off after the scene to disarm the alarm.
Circuit, RP is an external gain adjustment potentiometer A2. R6, C6 constitute the initial negative pulse power generating circuit, mainly for the elimination of SA is sometimes closed due to transient voltage surges A3 high output, which can effectively avoid false alarms. VD1, VD2 for the isolation diode, which makes A1, A2's output state mutual interference does not occur.
Component selection
A1 use micro-chip oscillation module, model XDZ-01, containing its internal amplification, filtering, shaping, integral, delay and level conversion circuit, size and pin arrangement shown in Figure 2 (a) below. The main electrical parameters are: operating voltage range of 2.4 ~ 6V, typically 3V, limit 9V; 3V operating voltage quiescent current = 50µA, the output current = 5mA, output time = 10s.
Micro-power use HN911L A2 pyroelectric infrared detector modules, its appearance as shown in Figure 2 (b) below. Requirements coupled with a Q-1A (58.8 × 45mm) type Fresnel lens (or lens) of the finished plastic shell, so that its level of detection angle of up to 85 °, detection distances up to 15m.
A3 use 5G7555 or CB7555 time base type CMOS integrated circuits, the quiescent current is very small, only 100µA. General TTL (bipolar type) when the base number of IC's quiescent current is usually mA, static power is not conducive to reduce the machine, so there should not be used.
By QX-5506 A4 static 6s finished voice recording plate, the printed wiring board as shown in Figure 2 (c) below. The board recording package with a soft bag-making, sound recording UM5506 static type 6s integrated circuit, a total of 12 function leads to foot. UM5506 by the use of four AG10 button-type silver oxide miniature battery-powered in series, voltage 6V, static power consumption of about 5µA, if UPS can guarantee the long-term record is not lost. When you press die SB1, Duizhuohuatong B1 speech, that speech signal will be input 6s; Press SB2 B2 can be heard from the speakers from the recorded voice. The finished plate device described in this application, the speaker should be removed by the chip ?, ? feet (play button on both ends) andFeet (the original speaker terminals) 4-lead access circuit.
VT1, VT2 are using 9014 or 3DG8 NPN silicon transistor, requiring ß> 80. VD1, VD2 with a 1N4148 silicon switching diodes. RP with the WS-2-X-type self-locking of organic solid core potentiometer. R1 ~ R8 be used RTX-1/8W carbon film resistors. C1 ~ C4, C6 are used CD11-16V electrolytic capacitor, C5, C7 with CT1-type ceramic capacitors. SA 1 × 1 with a small toggle switch, can also better with the camouflage magnetic switch. G 5 with 4 (or large) battery in series, voltage 6V.
K with the JAG-4-3HA dry reed relays. If not finished a moment to buy can be made. Self-made, can be three JAG-4-type reed switch normally open contacts into f7 × 22mm plastic tube, and two epoxy cementing; plastic pipe around the outside using f0.11mm 2100 turns enameled wire, and then wax to seal Serve.
Production and use of
Figure 3 shows the device printed circuit board welding map, printed on board the actual size of about 50 × 30mm.
Welded together with the battery circuit board into the volume of G a small box suitable insulation. Box panel cutout fixed SA. A1 through 3 lead to the door at fine wire, and glue it with 502 (copper bottom surface) flat attached to the back of the lock near the door; A2 together with the RP into a special Fresnel lens with a plastic case, the note A2 detection window from 20 ~ 30mm lens is appropriate (adjusted by the experiment), the components can be installed in the house where the effective detection of human activity, and the soft thin wire through the three boxes with the phase control circuit. K through two wire leads to the control circuit box, its and A4, R8, C7 phone into a position within the gap, according to Figure 1, access to telephone circuits.
Circuit is installed, the template entry in the A4 "× × × × No. Street, Pirates of the situation happened ... ..." and other voice, and will monitor the telephone number or paging telephone number stored in the memory used by the alarm circuit. Thus, when the owner or work out together on the switch SA, which will soon enter the monitoring alarm system status, a situation immediately to a stolen phone or personal Chinese BP monitoring machine alarm signal; owner home off SA, alarm system will stop monitoring.
Finally, we illustrate five points: First, the home phone to be used in a "one-click dial" emergency call button, and do not use hands-free phones, to prevent After picking noises, startled thieves. Second, install the alarm circuit should be concealed to prevent thieves soon found that SA or damage after the close circuit. Third, as long as the thieves have activities, exploration Pirates of the circuit after every 60s will automatically redial, voice alarm and send it again, if the interval too long (or short), can reduce (or increase) R5 and C4 values ??to adjustment. Fourth, A1, A2 trigger the alarm delay duration, respectively, by R2, C2, and R3, C3 determine the numerical value, such as not satisfied, by changing the corresponding value of resistive and capacitive elements to be adjusted. Fifth, the circuit is to monitor state, G provides total static current <0.2mA, not alarm over the past mA, so use it to save the battery. Generally every 5 to change a new battery, can work more than six months to one year time.