JP3532862B2 - Home security equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home security device.
Connection, especially between gas detectors and outdoor units and receivers
Receiver malfunction due to line failure
Related to home security devices. 2. Description of the Related Art Conventionally, as shown in FIG.
Device G, fire detector P, emergency push button H, security sensor I,
From bus / toilet call sensor J, receiver R, outdoor unit S
Home security devices have been proposed. [0003] Fire detector P, gas detector G, emergency push button
H, security sensor I, bath / toilet call sensor J
Detector input circuit 10, detector input circuit 11, non-
The normal push button input circuit 12, the security sensor input circuit 13,
Input to the control CPU via the
Is forced. [0004] Fire detector P, gas detector G, emergency push button
H is a detector input circuit 10 and a detector input circuit, respectively.
11, also to the outdoor unit S via the emergency push button input circuit 12
Will be entered. The control CPU includes a fire detector P, a gas detector
G, emergency pushbutton H, security sensor I, bath / toilet
If there is an alarm signal from sensor J, alarm sound generation circuit 1
6. Sound the speaker SP from the alarm sound amplification circuit 17,
And the relay Ry is driven by the relay control circuit 15 and the contact c is
From the contact Nc which is always connected to the communication line L1, the contact No.
And an alarm sound is also generated from the outdoor unit S. further,
An alarm is displayed by the alarm indicator circuit 18. Warning sound is warning
The sound is stopped by the sound stop button 19. 20 is a power supply circuit
Is shown. The receiver R of this home security device
The circuit configuration shown in FIG.
The gas detector G is connected via the gas detection line L
Connected to the gas detector input terminal G + of the receiver R
You. In addition, the gas detector input terminal G + outputs the gas detector status.
It is also connected to the outdoor unit S via the force terminal GT. The gas detector input terminal G + is a diode D1.
Diode ZD1 through the anode and cathode of the
Of the Zener diode ZD1
Is connected to the base of the transistor Q11 via the resistor R1.
One end of the transistor Q11 has a reference potential at its base.
The other end of the resistor R2 connected to the point is connected. The emitter of the transistor Q11 has a reference potential
And the collector is connected to the power supply + via resistors R8 and R7.
Connected to VCC. A connection point between the resistors R8 and R7 is a transistor Q
13 bases are connected and the emitter is connected to power supply + VCC
The collector is connected to the gas leak input I2 of the CPU.
ing. One end of the gas leak input side I2 of the CPU has a reference voltage.
The other end of the resistor R16 connected to the potential point is connected. The cathode of the diode D1 is connected to resistors R3 and R3.
4, connected to the reference potential point via R5 and connected to the resistors R4 and R5.
The base of the transistor Q12 is connected to the connection point.
You. The emitter of the transistor Q12 is connected to the reference potential point.
The collector is connected to the power supply + VCC through the resistor R9.
ing. A connection point between the resistors R3 and R4 is connected via a resistor R6.
Connected to the cathode of diode D2, the anode is a gas
Fault alarm stop switch used when detector G is not connected
It is connected to the power supply + VCC via SW1. Anode of diode D2 and fault alarm stop
The connection point of the switch SW1 is a resistor R10, a light emitting diode
It is connected to a reference potential point via D21. The collector of the transistor Q12 is connected to the resistor R11.
Connected to the reference potential point via R12, and connected to the resistors R11 and R12.
The connection point is connected to the base of the transistor Q15.
The emitter of the transistor Q15 is connected to the reference potential point,
The collector is connected to power supply + VCC through resistors R14 and R13.
Have been. A connection point between the resistors R14 and R13 is a transistor
Q14 base connected, emitter connected to power supply + VCC
Have been. The collector is connected to the line fault input I1 of the CPU.
It is connected. The line fault input I1 of the CPU
The other end of the resistor R15 whose end is connected to the reference potential point is connected
ing. The gas detector G is charged when monitoring, and charged when detecting.
It outputs a two-step voltage with voltage, and the output voltage is shown in Table 1.
It is shown. [Table 1] The voltage applied to the gas detector G during monitoring is 6 V.
Input terminal of the gas detector of the receiver R via the detection line L
Sent to G +, via diode D1, resistors R3 and R4
Transistor Q12 is on and
Ode ZD1 has a threshold that does not conduct at 6V
Transistor Q11 is turned off,
Transistor without base bias applied to the transistor Q13
Transistor Q13 is off and transistor Q12 is on.
The base bias is not applied to the star Q15 and the transistor
Q15 is off, and therefore transistor Q14 also has
The transistor Q14 is turned off due to no bias and the gas leaks.
Gas leak input to line input I2, line fault input I1, line
Do not give fault input. A gas detector G detects a gas leak and detects a gas leak.
When the output of the detector G reaches 12V, which is the voltage at the time of detection, this 1
The voltage of 2V is applied to the gas of the receiver R via the gas detection line L.
It is sent to the detector input terminal G +. The voltage of 12 V is applied to the diode D1.
Via a diode, a cathode, a Zener diode ZD1, and a resistor R1.
Applied to the base of transistor Q11
Q11 is turned on. When the transistor Q11 is turned on,
Transistor Q13 turns on, CPU gas leak input
Apply a gas leak input to side I2. The CPU processes this gas leak input and issues an alarm.
An alarm operation such as sound transmission and lighting of an indicator lamp is performed. Also,
The outdoor unit S is 12 V via the gas detector status output terminal GT.
When the voltage is detected, the alarm sound is sent, the indicator light is turned on, etc.
Perform outdoor display. Failure due to gas detection line L, gas due to power failure
When the detector G does not operate, the gas detector status output terminal GT
Input voltage is 6V when monitoring (standby)
The pressure becomes 0V. When the input of the gas detector status output terminal GT is 6
When the voltage changes from V to 0 V, the transistor Q12 is turned off.
When the transistor Q12 is turned off, the power supply + VCC and the resistance R
9, a current flows through R11 to the base of transistor Q15.
Flow transistor Q15 turns on. Transistor Q15
Is turned on, the transistor Q14 is also turned on and CP
A line fault input is given to U's line fault input I1. The CPU processes the line fault input and generates a line fault.
Performs road failure warning operation, emits warning sound, and turns on indicator light
And so on. The failure alarm stop switch SW1 is a gas detector.
When G is not connected, use it to stop the fault alarm during construction.
To close the fault alarm stop switch SW1
And power supply + VCC, closed fault alarm stop switch SW
1. Anode and cathode of diode D2, resistors R6 and R
4. Base bias is applied to the base of transistor Q12
As a result, the transistor Q12 is turned on. Transistor Q
When 12 turns on, transistors Q15 and Q14 turn off
And the line input to the line fault input side I1 of the CPU.
Stop the fault input. The operation of the transistors Q11 to Q15 and the operation of the CPU
Line fault input side I1 and gas leak input side I2 (both are H
Table 2 shows the situation for (active level). [Table 2] The gas detector status output terminal GT and the outdoor unit S
When the connected line is short-circuited, the gas detector input terminal G
+ Becomes 0 V as shown in Table 2 and the gas detector G
Detects gas leakage and outputs a 12V voltage at detection
Also, no gas leak input is given to the gas leak input side I2.
A normal gas leak cannot be displayed. Problems to be solved by the invention
In the safety device, the outdoor unit S checks the state of the gas detector G.
The gas detector input terminal G +
It is necessary to provide a status output terminal GT, and the gas detector input
Gas detector status output terminal GT is provided in parallel with terminal G +
And that a short circuit fault has occurred between the outdoor unit S and the receiver R.
Causes the receiver to malfunction (false alarm)
There is a drawback. The object of the present invention is to solve such difficulties.
Between the gas detector and the outdoor unit and the receiver
Prevents receiver malfunction due to line connection failure
To provide a home security device that can
I do. [0029] In order to achieve this object,
In addition, the home security device of the present invention is used for monitoring and detection.
2 different voltage values for monitoring and voltage for detection
A detector that outputs stepped voltage, and the detector
A receiver having a receiver control circuit connected through the
And an outdoor unit connected to the
Voltage level detection circuit to detect voltage
Detects pressure and outputs line fault signal to receiver control circuit
At the time of detection by line fault signal circuit and voltage level detection circuit
When a voltage is detected, the receiver control circuit sends a detection signal
At the same time as transmitting a voltage to the outdoor unit during false detection.
Monitoring by the output circuit and the voltage level detection circuit
When a voltage is detected, the line fault signal circuit is turned off.
Monitoring that transmits a voltage during pseudo-monitoring to outdoor units
Output circuit and the detector connected to the receiver via the sensing line
When the switch is not connected, a line fault signal is generated by operating the switch.
And a failure alarm stop circuit for turning off the circuit. In this home security device, the detector
Indicates that there is a different monitoring charge when monitoring and when detecting.
Outputs voltage and voltage at detection. This monitoring voltage and detection
The known voltage is sent to the receiver via the detection line.
The receiver detects a two-step voltage with a voltage level detection circuit.
You. The line fault signal circuit detects no-voltage on the detection line.
If so, a line fault signal is output to the receiver control circuit.
The output circuit at the time of detection is available at the time of detection by the voltage level detection circuit.
When a voltage is detected, a detection signal is sent to the receiver control circuit.
In addition to transmitting the voltage at the time of false detection to the outdoor unit,
You. The monitoring output circuit is monitored by the voltage level detection circuit
Turn off line fault signal circuit when temporal voltage is detected
At the same time, the pseudo-monitoring voltage is transmitted to the outdoor unit. Further, the detector is connected to the receiver via the detection line.
When the switch is operated when not connected to
The alarm stop circuit operates and turns off the line fault signal circuit.
You. Hereinafter, a home security device according to the present invention will be described.
Preferred embodiments will be described in detail with reference to the drawings. As shown in FIG. 1, the home security of the present invention
Security devices have different supervisors during monitoring and detection.
A two-stage voltage output that outputs a voltage when viewing and a voltage when detecting
Gas detector G and gas detector G via gas detection line L
A receiver R having a receiver control circuit CPU connected thereto;
An outdoor unit S connected to the receiver. The receiver R has a voltage for detecting a two-step voltage.
Transistors Q1 and Q2 as level detection circuits and gas
Receiver for detecting line-less signal by detecting no-voltage on detection line L
A circuit as a line fault signal circuit output to the control circuit CPU
Transistor Q6 and a transistor as a voltage level detection circuit
When the detected voltage is detected by the registers Q1 and Q2,
While transmitting the detection time signal to the receiver control circuit CPU,
Detection output circuit for transmitting a voltage at pseudo detection to outdoor unit S
And the voltage level detection circuit
When a voltage is detected during monitoring, the line fault signal circuit
Off the transistor Q6 as
A monitoring output circuit that transmits the voltage during pseudo monitoring to the machine S
Transistor Q4 and zener diode ZD2
ing. The gas detector G connects the gas detection line L
Switch SW1 when not connected to receiver R via
Operation of the transistor Q as a line fault signal circuit
Transistor as a fault alarm stop circuit that turns off 6
Data Q5. As described above, the home security device is
Gas detector G, receiver R, outdoor unit S
Gas detector G receives via gas detection line L
Connected to the gas detector input terminal G + of the machine R. In more detail, the gas detector input terminal G
+ Indicates a connection via the anode and cathode of the diode D1.
Connected to the cathode of the diode ZD1
The anode of the diode ZD1 detects the voltage level via the resistor R1.
Connected to the base of transistor Q1
One end of the base of the transistor Q1 is connected to the reference potential point
The other end of the resistor R2 is connected. The emitter of the transistor Q1 has a reference potential
And the collector is connected to the power supply + via resistors R6 and R5.
Connected to VCC. An output circuit at the time of detection is connected to the connection point of the resistors R6 and R5.
Transistor Q3 has its base connected and its emitter
Source + VCC, collector is receiver control circuit CPU
Is connected to the I2 input side for gas leakage. Receiver system
One end is reference to I2 input side for gas leak of control circuit CPU
The other end of the resistor R18 connected to the potential point is connected. The cathode of the diode D1 is connected to resistors R3 and R4.
Is connected to a reference potential point via the resistor R3 and R4.
Has the base of the transistor Q2 of the voltage level detection circuit.
It is connected. The emitter of transistor Q2 is
And the collector is connected through resistors R9 and R8.
Connected to source + VCC. The connection point of the resistors R9 and R8 has an output circuit for monitoring.
The base of the transistor Q4 is connected to the
Is connected to power supply + VCC, collector is resistor R7, die
One end is referenced through anode and cathode of Aether D3
It is connected to the other end of the resistor R12 connected to the potential point. The other end of the resistor R12 is connected to the cathode of the diode D4.
The transistor Q5 is connected via the load, the anode and the resistor R11.
And the emitter is connected to the power supply + VCC.
Have been. The other end of the resistor R12 is connected to a Zener diode ZD3.
+ VCC via the anode, cathode and resistor R15
It is connected. A switch S having one end connected to a reference potential point
The other end of W1 is connected to a power supply + VCC via resistors R14 and R13.
Has been continued. A transistor is connected to the connection point between the resistors R14 and R13.
The base of Q5 is connected, the collector is resistor R10,
It is connected to a reference potential point via an ion D21. Cathode and resistance of Zener diode ZD3
The base of transistor Q6 is connected to the connection point of R15.
The emitter is connected to the power supply + VCC, and the collector is
Connected to the line fault input side I1 of the machine control circuit CPU
You. Line fault input side I1 input side of receiver control circuit CPU
Is connected to the other end of the resistor R17, one end of which is connected to the reference potential point.
Has been continued. State of gas detector to which outdoor unit S is connected
The output terminal GT is a cathode of a resistor R16 and a diode D5.
Transistor Q of the output circuit at the time of detection through the
3 is connected to the collector of the resistor R16 and the diode D5.
The connection point of the sword is the cathode of diode D2, the anode
Through the anode and cathode of the Zener diode ZD2
Connected to the collector of transistor Q4 of the output circuit during monitoring.
Has been continued. The home security thus configured
At the receiver R of the device, when monitoring the gas detector G (standby
The voltage at the time of monitoring is 6V (voltage range is 5-7V).
This 6V is applied to the receiver R via the gas detection line L.
When the voltage is sent to the input terminal G +, the voltage level is detected.
The anode and cathode of the diode D1 of the circuit, the resistor R3,
Current flows to the base of transistor Q2,
Q2 turns on. When transistor Q2 turns on,
A current also flows through the base of the transistor Q4 via the resistor R9.
As a result, the transistor Q4 of the monitoring output circuit is turned on.
When the transistor Q4 is turned on, the resistor R7 and the diode
A current flows through the path of D3 and the resistor R12. With this current
The voltage across the resistor R15 drops, and the
The current stops flowing to the base of transistor Q6,
The line fault signal is transmitted to the line fault input side I1 of the control circuit CPU.
Not reached. Also, the Zener diode ZD1 is at 6V
Since it has a threshold that does not conduct, the transistor
Q1 is off and therefore transistor Q3 has a base-by
The receiver is not turned on and the transistor Q3 is off.
The gas leak input is transmitted to the gas leak input side I2 of the control circuit CPU.
Not reached. The collector of the transistor Q4 is
Since it is also connected to the cathode of Iode ZD2,
Cathode, anode, and diode of energy diode ZD2
Pseudo-monitoring via the anode and cathode of resistor D2 and resistor R16
The visual voltage is transmitted to the gas detector status output terminal GT. The Zener voltage VZ of the Zener diode ZD2
Assuming that D2 is, for example, VZD2 = 4.6, the gas detector status is output.
A voltage of (VCC-VCEQ4-VZD2-VDD2) .RZ / (RZ + R16) appears at the input terminal GT (where VCEQ4 is the transistor Q4
The collector and emitter voltage of VD2 is the voltage of diode D2.
Pressure and RZ indicate the input resistance of the outdoor unit S, respectively). Vcc = 12V, VCEQ4 = 0.2V, VZD2 =
4.6, VD2 = 0.6V, RZ is 10KΩ, gas detection
The detector input terminal G + becomes about 6V and the voltage when monitoring the gas detector
Is equivalent to When a gas leak is detected, the gas is detected from the gas detector G.
The known voltage 12V (voltage range is 10V to 27V) is
Input terminal of the gas detector of the receiver R via the detection line L
G +. This 12V is the anode of the diode D1,
Through the cathode, zener diode ZD1, and resistor R1.
Is applied to the base of transistor Q1 and transistor Q1
Turns on. When the transistor Q1 is turned on, the power supply +
VCC, emitter and base of transistor Q3, resistor R6,
The collector and transistor of the transistor Q1 of the voltage level detection circuit
Current flows in the path of the mitter, and the
The star Q3 is turned on. When the transistor Q3 is turned on, the receiver
Gas leak input to the gas leak input side I2 of the control circuit CPU
give. The receiver control circuit CPU processes this gas leak input.
Gas leak input alarm operation to send an alarm sound.
Alarm operation such as output and lighting of the indicator lamp is performed. The state of the gas detector to which the outdoor unit S is connected
The output terminal GT is connected to the transistor Q3 of the output circuit upon detection.
, The anode and cathode of diode D5,
A pseudo detection voltage is output via the resistor R16. If the input resistance of the outdoor unit S is 10 KΩ or more,
If the resistance value of the resistor R16 is 1KΩ, the gas detector
A voltage of (VCC-VCEQ3-VD5) .RZ / (RZ + R16) appears at the status output terminal GT. VCC = 12V, VCEQ3 = 0.2V, VD5 =
0.6V, RZ should be 10KΩ of input resistance of outdoor unit S side
If the gas detector input terminal G + becomes approximately 10.2 V
It is equivalent to the detector output (where VCEQ3 is the transistor
The collector and emitter voltages of Q3 and VD5 are diodes D5
Are shown respectively). Failure of gas detection line L, gas due to power failure
When the detector G is not operating, the gas detector input terminal G + is monitored.
During monitoring (at the time of standby), the voltage 6V at the time of monitoring becomes 0V at no voltage.
When the gas detector input terminal G + changes from 6V to 0V,
The transistor Q2 is turned off. Transistor Q2 is off
Then, the transistors Q4 and Q5 are turned off, and the transistors
Q6 is turned on. When the transistor Q6 is turned on,
A line fault input is given to a line fault input side I1 of the CPU. The CPU processes this line fault input and
Performs road failure warning operation, emits warning sound, and turns on indicator light
And so on. Gas detector status output terminal during monitoring and detection
Even if the child GT is short-circuited, if ICQ3 ≧ (VCC-VCEQ3-VD5) / R16 + II2, the resistor R16 becomes the current limiting resistor, and the receiver control is performed.
The signal transmission function to the gas leak input side I2 of the circuit CPU is confirmed.
(Where ICQ3 is the transistor Q3
The collector current, II2, is the current on the gas leakage input side, I2.
Respectively). Operation of transistors Q1 to Q6 and control of receiver
Line fault input I1 and gas leak input I2 of the circuit CPU
Table 3 shows the situation for all (H level is active)
Shown in [Table 3] The failure alarm stop switch SW1 is used for gas detection.
When the device G is not connected to the receiver R, a fault alarm is issued during construction.
Used to stop the system.
Switch SW1 operates the fault alarm stop circuit
Q5 is turned on, which causes a transient in the line fault signal circuit.
The star Q6 is turned off to stop the fault alarm. Further, as shown in FIG.
Thus, the home security device of the present invention
Different voltages at monitoring and at detection
A gas detector G that outputs a two-stage voltage, and a gas detector G
Is connected via the gas detection line L and the receiver control circuit C
Receiver R having PU and outdoor unit connected to receiver R
S is provided. The receiver R has a voltage for detecting a two-stage voltage.
Transistors Q1 and Q2 as level detection circuits and gas
Receiver for detecting line-less signal by detecting no-voltage on detection line L
A circuit as a line fault signal circuit output to the control circuit CPU
Transistor Q6 and a transistor as a voltage level detection circuit
When the detected voltage is detected by the registers Q1 and Q2,
Transmits a detection signal to the receiver control circuit CPU.
Transistor Q3 as a power circuit and receiver control circuit C
Detection of transmitting a voltage at the time of false detection to outdoor unit S by PU
Transistor Q3A as a time transmission output circuit and a voltage level
When monitoring with transistors Q1 and Q2 as
When a voltage is detected, the circuit as a line fault signal circuit
As a monitoring output circuit that turns off transistor Q6
Outdoor by transistor Q4 and receiver control circuit CPU
Monitoring transmission output circuit for transmitting a voltage during pseudo monitoring to the machine S
The transistor Q4A and the Zener diode ZD2
Have. The gas detector G connects the gas detection line L
Switch SW1 when not connected to receiver R via
Operation of the transistor Q as a line fault signal circuit
Transistor as a fault alarm stop circuit that turns off 6
Data Q5. In this embodiment, the receiver R is
An outdoor unit control output O1, O2 is provided in the control circuit CPU.
Yes, as shown in FIG.
Connected to the gas detector input terminal G + of the receiver R via the
Have been. The gas detector input terminal G + is a diode D1
Diode ZD1 through the anode and cathode of the
Of the Zener diode ZD1
Is connected to the transistor of the voltage level detection circuit via the resistor R1.
The base of the transistor Q1 is connected to the base of the
Is connected to the other end of the resistor R2 whose one end is connected to the reference potential point.
Has been continued. The emitter of the transistor Q1 has a reference potential
And the collector is connected to the power supply + via resistors R6 and R5.
Connected to VCC. Emi of the transistor Q3 of the output circuit upon detection
Is the power supply + VCC, and the base is the connection point of resistors R6 and R5.
And the collectors are connected to the receiver control circuit CPU.
It is connected to the gas leak input side I2. Gas leak input side
I2 is connected to a reference potential point by a resistor R26. The cathode of the diode D1 is connected to resistors R3 and R4.
Is connected to a reference potential point via the resistor R3 and R4.
Has the base of the transistor Q2 of the voltage level detection circuit.
It is connected. The emitter of transistor Q2 is
And the collector is connected through resistors R9 and R8.
Connected to source + VCC. The connection point between the resistors R9 and R8 is a monitoring output circuit.
The base of the transistor Q4 is connected and the emitter is
Power supply + VCC is connected. This of transistor Q4
The resistor is the resistor R7, the anode and cathode of the diode D3.
Via a resistor R12, one end of which is connected to the reference potential point.
Connected to the end. The other end of the resistor R12 is connected to the cathode of the diode D4.
The transistor Q5 is connected via the load, the anode and the resistor R11.
And the emitter is connected to the power supply + VCC.
Have been. A switch S having one end connected to a reference potential point
The other end of W1 is connected to a power supply + VCC via resistors R14 and R13.
Has been continued. The connection point between the resistors R14 and R13 is the transistor Q
5 base is connected, and the other end of the resistor R12 is
Via anode, cathode and resistor R15 of Aether ZD3
Connected to power supply + VCC. Cathode and resistance of Zener diode ZD3
The connection point of R15 is connected to the transistor Q6 of the line fault signal circuit.
Connected to base, emitter connected to power supply + VCC
I have. The collector of transistor Q6 is a receiver control circuit
It is connected to the line fault input I1 of the CPU. Track failure
The harmful input side I1 is connected to a reference potential point by a resistor R25.
I have. The state of the gas detector to which the outdoor unit S is connected
The output terminal GT is a cathode of a resistor R16 and a diode D5.
Of the transmission output circuit at the time of detection via the
The collector is connected to the collector of the
It is connected. One end of the base is connected to power supply + VCC
The other end of the resistor R5A is connected to the other end of the resistor R5A.
Connected to the collector of transistor Q22 via 6A
I have. The emitter of transistor Q22 is connected to the reference potential point
The base is a receiver control circuit CPU via a resistor R24.
Is connected to the outdoor unit control output O2. Transistor
The base of Q22 has a resistor connected at one end to the reference potential point.
The other end of R23 is connected. The connection between the resistor R16 and the cathode of the diode D5
The continuation points are the cathode, anode and zenada of diode D2.
During monitoring via anode and cathode of Iode ZD2
Connected to the collector of transistor Q4A in the transmission output circuit
The emitter is connected to the power supply + VCC. The base is
One end of the resistor R8A connected to the power supply + VCC is connected to the other end.
The other end of the resistor R8A is connected to a transistor via the resistor R9A.
Connected to the collector of Q21. Transistor Q21
The emitter is connected to the reference potential point, and the base is connected to a resistor R22.
To the outdoor unit control output O1 of the receiver control circuit CPU
Has been continued. One end is connected to the base of transistor Q21.
The other end of the resistor R21 connected to the quasi-potential point is connected.
You. In this embodiment, the embodiment described above is also used.
During monitoring (standby), the voltage level of the gas detector G is
The transistor Q2 of the bell detection circuit turns on. Tran
When the transistor Q2 is turned on, the line fault signal circuit
The current stops flowing to the base of the transistor Q6, and the receiver is controlled.
The line fault signal is transmitted to the line fault input side I1 of the circuit CPU.
Not done. The receiver control circuit CPU is connected to the line fault input side I1.
Is at L level, the transient from the outdoor unit control output O1
The transistor Q of the transmission output circuit during monitoring via the star Q21
4A, when pseudo-monitoring to the outdoor unit S by the Zener diode ZD2
Transmits voltage. At the time of detection, reception is performed by the transistor Q1.
Machine control circuit CPU leaks gas once to gas leak input side I2
It takes in a signal and outputs a transistor
Transistor as transmission output circuit upon detection via Q22
A voltage is transmitted to the outdoor unit S at the time of pseudo detection by Q3A. As in the previous embodiment, when a line failure occurs,
Due to the transistor Q6, the receiver control circuit CPU enters a line fault.
A line fault signal is given to the input side I1. These signals are sent to the receiver control circuit CPU once.
Capture, signal from outdoor unit control output O1, O2 to outdoor unit S
Of the transistors Q1 to Q6 and the receiver
Line fault input side I1 of control circuit CPU and gas leak input
Situation for side I2 (H level active)
Is shown in Table 3. In this embodiment, the transistors Q3A,
Transistor Q4A is replaced with transistor Q3 shown in FIG.
Replaced with transistor Q4, and connected outdoor unit control output O1, O2
If it is read as the fault input side I1 and the gas leak input side I2,
The operation of the transistor in each circuit is the same. As is clear from the above description, the present invention
According to the home security device, with the detector and the outdoor unit
Receiver operation due to line failure connecting receivers
Failure can be prevented, and the detector receives via the detection line
When not connected to the machine, operation of the switch is under construction
Can stop the fault alarm.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram showing one embodiment of a receiver in a home security device according to the present invention. FIG. 2 is a circuit diagram showing another embodiment of the receiver in the home security device of the present invention. FIG. 3 is a schematic configuration diagram of a conventional home security device. FIG. 4 is a circuit diagram of a receiver in a conventional home security device. [Explanation of Signs] G ... Gas detector S ... Outdoor unit R ... Receiver CPU ... Receiver control circuit Q1, Q2 ... ... Transistor (voltage level detection circuit) Q3 ... Transistor (output circuit at detection) Q4 ... Transistor (output circuit at monitoring) ZD2 ... Output circuit) Q5: Transistor (fault alarm stop circuit) Q6: Transistor (line fault signal circuit) SW1: Switch

Claims (1)

(57) [Claim 1] A detector (G) that outputs a two-stage voltage at monitoring and a voltage at detection, which are different during monitoring and detection, respectively, and the detector detects the voltage. Receiver (R) connected via line (L) and having receiver control circuit (CPU)
And an outdoor unit (S) connected to the receiver, wherein the receiver detects a voltage level detection circuit (Q1, Q2) for detecting the two-step voltage, and detects no voltage on the detection line. And a line fault signal circuit (Q6) for outputting a line fault signal to the receiver control circuit, and transmitting a detection time signal to the receiver control circuit when the voltage at detection time is detected by the voltage level detection circuit. And a detection-time output circuit (Q3) for transmitting a pseudo-detection voltage to the outdoor unit, and turning off the line fault signal circuit when the monitoring-time voltage is detected by the voltage level detection circuit.
A monitoring output circuit (Q4, ZD2) for transmitting a pseudo-monitoring voltage to the outdoor unit, and a switch (SW) when the detector is not connected to the receiver via the detection line.
A home security device comprising a fault alarm stop circuit (Q5) for turning off the line fault signal circuit by the operation of 1).