JPS6239468B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention emits a notification signal from the master unit installed indoors by operating the call switch of the slave unit installed on a gatepost or entrance, and then a response signal is also sent to the slave unit. The present invention relates to a response chime with a crime prevention alarm device that combines a response chime and a crime prevention alarm device.

Conventionally, devices such as answering chimes and intercoms that can be answered by a slave unit and a master unit are known. On the other hand, there is a security alarm system that detects whether the door is locked and sounds an alarm if there is an intruder. However, security alarm devices are generally configured to emit an alarm sound only from the main unit, so if the main unit is installed indoors, the alarm sound will not be emitted outdoors, and if necessary, two wires will be used to It was necessary to connect the main unit to the additional alarm system installed in the main unit, which not only required construction work but also required the provision of additional alarm means (a bell or flasher lamp) separately. This invention was made in view of the above-mentioned drawbacks, and includes a slave device including a call switch and a speaker, a response signal generation circuit electrically connected to the slave device such as a signal tone, voice, melody, etc., a speaker, and a crime prevention device. It consists of a master unit including an intrusion detection circuit that detects whether the switch is open or closed, and a security switch connected to the intrusion circuit, which detects the operation of the call switch of the slave unit and A crime prevention device that outputs a response signal such as the signal tone, voice, melody, etc. from the speaker of the slave unit, and also notifies the speaker of the slave unit and the master unit of an alarm sound indicating the presence of an intruder when the crime prevention switch is opened. This is a response chime with a notification device. Examples will be described in detail below.

In FIG. 1, reference numeral 1 denotes a slave device having a call switch 2 and a speaker 3. speaker 3
A capacitor C connected in series with the matching coil 3a has the role of cutting off the DC component.
4 is a parent device, and a detection circuit 5 detects that the call switch 2 of the slave device 1 is operated;
A latch circuit 6 which is set by the output of this detection circuit 5, a first timer circuit 7 which starts time-limiting by the output of this latch circuit 6, and a second timer circuit 7 which starts time-limiting from the time-up point of this first timer circuit. a timer circuit 8, a third timer circuit 9 that starts expiring from the time-up point of the second timer circuit, and a signal that is driven during the expiration period of the first timer circuit 7 and the second timer circuit 8. Sound generation circuit 10 and the third timer circuit 9
A sound generating circuit 11 that is driven during the time limit period, a melody generating circuit 12 that starts driving by a reset signal of this sound generating circuit 11, and the outputs of the signal sound generating circuit 10, the sound generating circuit 11, and the melody generating circuit 12. The low frequency mixing circuit 13
a low frequency amplification circuit 14 connected to the speaker 17 via a normally open contact a of the contact 16 of the changeover switch means 15 which is energized during the time limit of the first timer circuit 7; 60 and a crime prevention alarm signal processing circuit 50. The security alarm signal processing circuit 50 includes an intrusion detection circuit 51 and a second latch circuit 52 that is reset by the output of this intrusion detection circuit.
This second latch circuit and the intrusion detection circuit 51
is connected to the fourth timer circuit 54 via the NOR gate 53.
4 is connected to the third relay 55 and the alarm sound terminal 10a of the signal sound generation circuit 10. Further, the output of the second latch circuit 52 is connected to the fifth timer circuit 56 and the warning sound terminal 10b of the signal sound generation circuit 10. The output of the fifth timer circuit 56 is connected to a third latch circuit 57;
The Q output of the third latch circuit 57 is connected to the a' terminal of the sound generating circuit 11, and the output is connected to the 10b terminal of the signal tone generating circuit 10. Note that 58 is a security switch, 59 is a contact point of the third reel 55, 60 is a power source, and 61 is an emergency power source. 6
2 is a switch that applies voltage to the crime prevention signal processing circuit 50; Here, the detection circuit 5 detects the voltage V ₀ and the power supply voltage generated across the resistor R ₀ connected in series to the electric wire l ₂ on the main device 4 side by operating the call switch 2 as shown in FIG. 2, for example. The comparator 5a compares the voltage _V1 obtained by dividing _VB with resistors _r1 and _r2 , and outputs an output signal when _V1 < _V0 . The first to third timer circuits 7, 8, and 9 are, for example, circuits as shown in FIG.
The voltage applied to this time limit circuit section is configured to be outputted via flip-flops 7b, 8b, and 9b. For example, as shown in FIG. 4, the signal sound generation circuit 10 is a circuit that generates an audible sound by dividing the frequency of an oscillation circuit that oscillates a reference high frequency (for example, 7 KHz), and 19 is a power supply holding circuit; This circuit supplies power to all circuits using the power supply voltage V _B as the circuit voltage Vcc by the set signal output from the timer circuit 7 of the circuit, maintains this state, and cuts off the power supply voltage V _B by the reset signal. .
20 is an oscillation circuit that generates a reference frequency ₁ ; 2
1 is a frequency dividing stage for generating audible sound, for example, frequency divided wave ₂ =
It is a frequency division stage such as a T flip-flop that combines multiple frequency dividers to obtain a constant ratio audible sound of 800Hz, ₃ = 704Hz ( ₂ : ₃ = 5:4). 2
2 is a frequency division stage for sound generation and modulation timing, which further divides the frequency of the audible sound obtained by the audible sound generation frequency division stage 21 to produce pulses of, for example, about 1 to 10 Hz, and sets the sound generation timing, modulation period, and power supply reset pulse. This is a frequency dividing stage. Reference numeral 23 denotes an initial state establishment circuit, which resets the frequency division stage 22 for sound generation modulation timing in one shot when the power supply is set. 24 is a digital modulator, which is the frequency dividing stage 2 for the sound generation and modulation timing.
This circuit modulates the amplitude of the input signal in a stepwise manner using the binary code of the frequency divider. 25
A selection control circuit is a circuit that selects the timing for applying frequency ₂ or ₃ , or alternating frequencies ₂ and ₃ , to the digital modulator 24 depending on whether input A or input B is input.
AMP14 is an amplifier connected to the digital modulator 24 via a variable resistor VR1 and a mixing circuit 13, and a speaker 17 is a slave speaker 3'.
Configure it to be more pronounced.

When input A is applied from the first timer circuit 7, the power supply holding circuit 19 enters the set state and voltage Vcc is supplied to all circuits, and the initial state setting circuit 23 outputs a one-shot reset pulse to set the tone generation and modulation timing. All outputs of each frequency divider in the frequency dividing stage 22 are set to H level. Oscillation circuit 20
outputs an output of frequency ₁ (approximately 7KHz), which is frequency-divided by the alarm sound generation frequency division stage 21, and ₂ ≒
The broadcast frequency is 880Hz, ₃ ≒704Hz, ₂ : ₃ = 5:4. The sound generation and modulation timing frequency dividing stage 22 is excited by one of these frequencies to obtain control square waves ₄ and ₅ and a modulation binary code signal. The square wave in this case is ₄
≒16Hz, ₅ ≒1Hz. The selection control circuit 25 outputs frequencies ₂ and ₃ alternately with a period of frequency ₅ , and the output thereof enters the digital modulator 24 and is modulated by a step-like modulation signal obtained by a binary code signal, and finally outputs the frequency 5. It is input to the amplification circuit 14 as a modulated waveform ₆ as shown in FIG.

Next, regarding the sound generation circuit 11, FIGS.
This will be explained according to the diagram.

When audio is decomposed using a machine called a sonagraph, a diagram (sonagram) as shown in Figure 7-1 is created. That is, time is plotted on the horizontal axis and frequency is plotted on the vertical axis, and a voice, for example, "a", is shown broken down into several frequency components. Therefore, it can be said that speech can be synthesized using the simple block diagram shown in Figure 7-2. That is, the output of a periodic pulse generator 82 controlled by pitch data 81 is controlled by an amplitude controller 84 controlled by amplitude data 83.
The output of this amplitude controller 84 drives filters F ₁ , F ₂ , and F ₃ . These filters F ₁
F ₃ to F 3 are set by parameters 〓 to 〓 corresponding to the first to third formants.
On the other hand, the output of the noise generator 85 is input to an amplitude controller 87 controlled by amplitude data 86, and the output of this amplitude controller 87 is input to a frequency band controller 89 controlled by band data 88. The outputs of F ₁ to F ₃ are combined and output as audio from a speaker via a digital-to-analog converter D/A, a low frequency filter LPF, and an amplifier AMP. Therefore, in order to synthesize speech using a microprocessor, phoneme data (basic,
The frequencies of the first to third formants), pitch data, and amplitude data are transferred to the phoneme data ROM2.
6. The program is stored in the ROM 27 and the microprocessor 2 is programmed by the output of the third timer circuit 9.
8, the phoneme data is controlled by the pitch data and the amplitude data, and the digital voice waveform is generated by the microprocessor 28 according to a program to make it say things such as "Please wait for a while" or "I'm not at home." The audio signals are synthesized via the digital-to-analog converter 29 and the low frequency filter 30.

Next, the melody generating circuit 12 will be explained with reference to FIG.

A melody is made up of a combination of notes, and notes can be divided into pitch and length. Therefore, the pitch data and note length data of a plurality of notes are sequentially stored in the memory circuit by determining addresses. For example, if the pitch is "C" and the pitch length is a quarter note, the pitch data should be replaced with numbers such as 1140 and the pitch data 2140.
Set an address and memorize it. Next, the pitch data and note length data are sequentially read out according to the program stored in the ROM 34 of the microprocessor 23, and the oscillation circuit is controlled to sequentially generate notes as digital signal waveforms, and the digital-to-analog converter 35, A melody is created via the low bar filter 36 and the amplifier 14, and then generated from the speaker. A flowchart of the program is shown in FIG.

Next, the security alarm signal processing circuit 50 will be explained with reference to FIG. That is, the security switch group 58 is the first
Security switches S ₁ , S ₂ . . . as shown in FIG. Therefore, security switches S ₁ and S ₂
... are all in a closed circuit state, the output terminal z of the intrusion detection circuit 51 is at L (low) level. The second latch circuit 52 is composed of an SCR, and when the switch 62 is closed, if even one of the series circuits of the security switches S ₁ , S ₂ . . . is open, the output z of the intrusion detection 51 becomes low level. Therefore, there is no input to the gate of the SCR, the SCR is in an inactive state, and the output of the latch circuit 52 becomes H (high) level.

As shown in FIG. 11, the security switches S ₁ , S ₂ . . . have a reed switch 90 housed in a container 91 and attached to a construction surface 92, and a permanent magnet 93 facing the reed switch 90 to attach the reed switch 90 to a sliding door or window frame 94. Fixed to. and both ends 90a of the reed switch 90,
90b becomes open when the permanent magnet 93 moves away from the reed switch 90 due to movement of a sliding door or window.

Next, the operation will be explained.

When the call switch 2 of the slave unit 1 is operated, a current flows from the power supply 60 through the resistor R ₀ , the potential V ₀ at point X rises, the detection circuit 5 sends out an H level signal, and the output of the latch circuit 6 is It becomes H level. The output of the latch circuit 6 is connected to the first timer circuit 7.
is applied to start the timer. During this time limit, the output becomes an H level signal, and the signal sound generation circuit 1
0 and is also driven by the output of the first timer circuit via the mixing circuit 13 and the low frequency amplification circuit 14.
A signal sound is emitted from the speaker 17 through the a contact of the speaker 17. This signal sound is, for example, a visitor notification sound called "ping pong" as shown in FIG. When the first timer circuit times out, the changeover switch means is opened, and the contact is switched from the a side to the b side and connected to the electric wire _l1 side. After the first timer circuit times up, the second timer circuit 8 starts time-limiting operation, and the output of the signal sound generation circuit 10 is transmitted to the electric wire.
For example, a response signal of "ping ping" is emitted from the speaker 3 of the slave device 1 via _l1 . Second
After the timer circuit 8 times up, the third timer circuit 9 starts time-limiting operation, and the sound generation circuit 11
to drive. This sound generation circuit generates a pre-stored sound such as "Please wait for a moment."
The sound is produced from the speaker of slave device 1. Next, the melody generation circuit 12 is activated by the end pulse of the voice generation circuit 11. The melody generating circuit 12 sequentially reads out the stored musical note data and causes the speaker 3 of the slave unit 1 to produce the sound. Note that three of the first to third timer circuits shown in FIG. 3 are not necessarily required, and it is also possible to configure each of the signal tone, voice, and melody generation circuits as one block. It is.

Next, when the switch 62 is closed, a voltage is applied to the security alarm signal processing circuit 50. At this time, if any one of the security switches S ₁ , S ₂ , ... is open (that is, the door is not locked), the output z of the intrusion detection circuit 51 becomes low level, and the second latch circuit is activated. 52 becomes H (high) level, the terminal 10b of the signal sound generation circuit 10 becomes high level, and a signal different from the visitor notification sound described above, such as a "boo" sound, is emitted, and the changeover switching means 15 is activated in the same manner. , the "boo" sound is announced from the speaker 17 of the parent device, and the output of the fifth timer circuit 56 remains for a certain period of time from the time when the output of the second latch circuit 52 becomes high level. That is, the third latch circuit outputs a high level signal after a period of time determined by the time at which the charging voltage of the capacitor Ca charged via rc' and the voltage at the voltage dividing point of the resistors ra and rb are reversed. 57 is set, and the Q output of this third latch circuit 57 is inputted to the a' terminal of the sound generating circuit 11. This sound generation circuit generates a notification sound different from that when the call switch 2 is operated, for example, a sound signal such as "Please make sure the door is locked." At this time, the changeover switch means 15 is still energized and the contact 16 is a
Since it is connected to the side, the sound is emitted from the speaker 17 of the parent device. If you listen to this voice and completely lock the door, the output of the intrusion detection circuit 51 will go to H level, so the SCR of the second latch circuit 52 will become conductive, and the output of the second latch circuit 52 will go to L level. . If an intruder opens a window or door in this state, the security switch will open and the intrusion detection circuit 5 will open.
1's output z shifts to L level, and NOR gate 5
3 shifts to H level, voltage is applied to both the fourth timer circuit 54 and the third reel 55, and the output of the fourth timer circuit is input to the alarm sound terminal 10a of the signal sound generation circuit 10. Therefore, an alarm signal such as "pipo, pipo, pipo" is generated, and the signal is transmitted from the speaker 17 of the main device via the a contact of the contact 59 of the third relay 55 and the b contact of the contact 16 of the changeover switch means 15. The alarm sound is simultaneously sounded from the speaker 3 of the slave device 1. It is also possible to connect the output of the fourth timer circuit 54 to the sound generation circuit 11 and generate an alarm sound corresponding to this input, for example, a sound such as "thieves!".

FIG. 12 shows a second embodiment in which an intercom function, a home/absence switch, and a changeover switch are added to the above-mentioned main unit. It is connected to the two wires l ₁ ′ and l ₂ ′ by a network 39 and also connected to an alternate coupling circuit 38.
The voice signal is coupled to the call switch 2' by the call switch 2'. This child device 1' is connected to the parent device 4' via an electric wire l ₁ '. The specific circuit of the child device is the first
Shown in Figure 3. In addition to the circuit group shown in FIG. 2, the parent device is provided with a handset 40, and is provided with means 41 for detecting removal of the handset 40. For example, the slave device 1' and the handset are configured to be directly connected by a push button switch 41a. As shown in FIG. 12, the weight of the handset 40 causes the lever 41b that presses the push button of the push button switch 41a to move against the force of the return spring 42 and move to the fulcrum 43.
The switch rotates around , energizes the switching relay 41c to the normally closed contact side of the switch 41a, changes the contact 41d of the relay 41c from the B contact to the A contact, and connects the initial handset 40 and the slave unit 1'. 40 is configured to be opened and connected to the electronic circuit group of the child device and the parent device 4'. The circuit configuration below the slave unit voltage detection circuit 5' for detecting the operation of the calling switch 2' of the slave unit 1' is the same as that shown in FIG. However, home/absence changeover switches SW ₁ to SW ₂ are provided, and switches that can switch between at least two stages of "home" and "away" are installed between the signal tone generation circuit 10', the sound generation circuit 11', and the timer circuit. Insert into. This changeover switch SW ₁ to
SW ₂ is for switching between being at home and being away.When you are at home, you can change the switch to the "home" position, and when you are out, you can change the switch to the "away" position.You can change the content of the initial signal sound and voice. It is for. As shown in FIG. 13, the AC/DC coupling circuit 38 of the slave unit 1' is composed of a capacitor C and a call switch 1', and high frequency waves flow through the capacitor C and direct current flows through the call switch 1'.

When a voice signal is sent, the simultaneous call circuit network 39 connects a current i ₀ through the primary winding of the matching transformer 44 and the capacitor C, generates sound from the speaker 3', and transmits the voice signal. When transmitting, currents i ₁ and i 1 ' are made to flow from the middle point of the primary winding of the matching transformer 44 to one coil 45a and the other coil _45b , respectively, and currents i ₁ and i ₁ are sent from the speaker 3'. ' is a synthesized sound, that is, it is canceled and no sound is produced. Therefore, howling will not occur even if the microphone and speaker are close to each other. In the second embodiment shown in FIG. 12, as in the first embodiment shown in FIG. After that, the speaker 3' of the slave device 1' issues a response signal such as "ping pong", the voice response signal "Please wait for a while", a melody tone, etc., and the handset is set on the main device 4'. 40, the contacts of the push-button switch 41a are reversed, and the contacts of the push-button switch connect the handset 40 to the handset 1' directly or via a relay, allowing a conversation to take place. Also, when you switch SW ₁ to SW ₂ to indicate that you are away from home, the signal tone generating circuit 10' will emit a sound different from ``ping-dong,'' for example, ``boo,'' and the sound generating circuit 11' will say ``I'm currently out.'' It becomes possible to change it into a response signal such as . The operation of the crime prevention alarm signal processing circuit is similar to that of the embodiment shown in FIG. However, it is most desirable to have the switch 62 interlock with the changeover switch for "at home" and "away" so that when the switch is switched to indicate that the user is away, the switch 62 is closed and voltage is applied to the crime prevention alarm signal processing circuit 50. .

As described above, according to the response chime with a crime prevention alarm device of the present invention, there is a slave device including a call switch and a speaker, a response signal generation circuit such as a signal tone, voice, melody, etc. electrically connected to the slave device, and a speaker. Security switch “open” or “closed”
It consists of a master unit including an intrusion detection circuit that detects the status, and a crime prevention switch connected to the intrusion detection circuit, detects operation of the call switch of the slave unit, and emits the signal sound from the speakers of the master unit and the slave unit. ,
In addition to issuing response signals such as voice and melody,
Since the response chime is equipped with a crime prevention alarm device that broadcasts an alarm sound indicating the presence of an intruder when the crime prevention switch is opened, the speaker of the slave unit and the master unit is used, so that the signal of the response chime, the sound generation circuit, and the slave unit are used. It can be used in common with the main unit and the speaker of the main unit, and can be provided at low cost.Moreover, in the case of an intrusion alarm, both the main unit and the slave unit can issue an alarm at the same time, so the crime prevention effect can be further increased.

In addition, if the switch for "home" and "absent" is linked with the voltage application switch for the crime prevention alarm signal processing circuit, you can check that the door is locked and set the security alarm circuit at the same time when you go out, so you will not forget to do so. Moreover, since it notifies you by voice when confirming that the door is locked, etc., it has the effect of making it even clearer.

[Brief explanation of the drawing]

The figures are drawings for explaining an embodiment of the present invention, in which Fig. 1 is a block diagram of the first embodiment, Figs. 3 is a circuit diagram of the circuit 5, FIG. 3 is an electric circuit diagram of the first to third timer circuits, FIG. 4 is a block diagram of a signal tone generating circuit, and FIG. 5 is a signal waveform. Figure 6 shows a block diagram of the voice generation circuit, Figure 7-1 is a voice decomposition waveform diagram, Figure 7-2 is a block diagram of a voice synthesis electric circuit, Figure 8 is a block diagram of a melody generation circuit, and Figure 7-2 is a block diagram of a voice synthesis electric circuit. FIG. 9 is a flowchart, FIG. 10 is an electric circuit diagram of the security alarm signal processing circuit, FIG. 11 is a schematic diagram explaining the security switch, FIG. 12 is a block diagram of the second embodiment, and FIG.
Figure 3 is the electrical circuit diagram between the handset and slave unit, 1st
FIG. 4 is a diagram illustrating a handset removal detection circuit. FIG. 15 is an overall time chart. Here, 1: Slave device, 2: Call switch,
3: Speaker, 4: Master device, 10: Signal sound generation circuit, 11: Sound generation circuit, 12: Melody generation circuit, 50: Security alarm signal processing circuit, 58: Security switch.

Claims (1)

[Claims] 1. A slave unit including a call switch and a speaker, and a slave unit electrically connected to the slave unit and capable of producing a signal sound, voice,
The main unit includes a response signal generation circuit such as a melody, a speaker, and an intrusion detection circuit that detects the "open" or "closed" state of the security switch, and a crime prevention switch connected to the intrusion detection circuit. detects the operation of the call switch and outputs a response signal such as the signal tone, voice, melody, etc. from the speakers of the master device and slave device, and also emits an alarm sound indicating the presence of an intruder when the security switch is closed. A response chime with a crime prevention alarm device, characterized in that an alarm is made through speakers of the child device and the parent device. 2 When the security switch connected to the intrusion detection circuit is in the "open" state and the power is connected, an audio notification sound will be emitted from the master speaker to remind you to confirm that the door is locked, and when the security switch is in the "closed" state and the power is connected After that, when the crime prevention switch shifts to the "open" state, an alarm sound to notify the presence of an intruder is sounded from the speakers of the master device and slave device. Response chime with crime prevention alarm device. 3. A response chime with a security alarm device according to claim 1, characterized in that the alarm sound is an audio alarm sound. 4. A switch for switching between "at home" and "away" is installed on the main unit, and when the user is away, a different response signal is output than when the user is at home, and when the switch is switched while the user is away, voltage is applied to the crime prevention alarm signal processing circuit at the same time. A response chime with a crime prevention alarm device according to claim 1, characterized in that: