JPS5940709Y2 - reporting circuit - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reporting circuit, and particularly to a reporting circuit for detecting all abnormal situations such as fire, gas leak, or intrusion, and reporting the occurrence of the abnormality.

A conventional circuit of this kind is shown in Fig. 1 and explained. In the figure, 51ss2 is a switch connected in series, and the switches S 1 * S 2 ... are designated as sensors during an alarm. They are placed in windows, doors, safes, etc.

C1 and C2 are capacitors connected in parallel to the switch 51tS2, L is a line, and T is a transformer, one winding of which is connected to the DC power supply E, and the other winding connected to the relay D.
It is connected to an AC power source or an oscillator (not shown) via a contact d4.

DDT is a direct current detection circuit, and ADT is an alternating current detection circuit.

OUT is an output terminal to which an alarm output or fault output can be sent.

In the reporting circuit configured in this way, the switch S1
When the housing or S2 operates, the DC loop is cut, so the DC current is cut off.

When the DC current is cut off, the DC detection circuit DDT fully detects this, activates the relay D4, and closes its contact d, causing the AC signal from the AC power supply or oscillator to pass through the transformer T and be added to the track. , filter and connect capacitor C1 * C2 to AC detection circuit ADTIC/70, output terminal O
A warning will be issued from UT.

On the other hand, when the line is disconnected, relay D is detected by direct current detection.
operates, but since the AC signal from the AC detection circuit ADTK does not come, it is notified that there is a disconnection fault in the line.

However, since the button in such a notification circuit is based on the detection of current interruption, the switch S1.
S2...If you connect them in series, additional work will be required to add more switches. I didn't want to leave it as a residue.

On the other hand, if the switches S1, S2, etc. are all connected in parallel, each circuit requires a DC detection circuit, a relay, and an AC detection circuit 4, which has the disadvantage of making the configuration complicated and expensive. Ta.

In view of the above points, the present invention was devised to solve such problems 4 and eliminate such disadvantages.The main purpose is to have a simple configuration and to be able to take out the notification output and the line release output 4 separately. Another purpose is to provide a complete reporting circuit whose switches can be easily increased or decreased.

Hereinafter, the configuration and the like will be explained in detail with reference to the illustrated embodiment.

FIG. 2 is a circuit diagram showing an embodiment of the notification circuit according to the present invention, and shows an example of the case where 43 abnormality detection sensors are used as an emergency notification device.

In the figure, S, S2. S3 is switch S in Figure 1.
, S . . . 1
2. A switch located in a designated window door, safe, etc.
Each of these switch sections 81 to S8 is a constant voltage diode ZD, ZD, ZDla 1b.
1C and the series circuit of the switches Sa, Sb, and Sc, and the constant voltage diode zD connected in parallel to the series circuit of the switches Sa, Sb, and Sc.
, zD2b , zD2c and the structure a are very popular.

One end of each of the switch parts S1゜S, S is configured so that the IOV power supply voltage can be supplied via the line L1S L213L3 and the terminal block TERk, and the other end is connected to each P. The line L 1 t L2 9 L3 is grounded through the terminal block TER and the voltage dividing resistor RtR2tR3r, and the voltage detecting section p which divides the power supply voltage V 4, respectively, the constant voltage 18 of the resistor RR and the switch section S to S2.
The entire series circuit consists of 1 circuit and 1 circuit.

Here, the Zener a voltage vz1 of the constant voltage diode ZD-ZDic is 3.2■, and the constant voltage diode zD2a~Z
The Zener voltage Vz2 of D is 6.8V and can be set so that C z 〈■z2.

Then, the voltage diode zD1a and the switch Sa
.

The series circuits of zDlb and Sb and ZD and S are provided in the switch section S-8, and constitute switching means 4 for changing the constant voltage drop division of the constant voltage circuit.

CMP and CMP2 are comparators that make constant comparisons between the reference voltage and the input voltage, and these are the power supply voltage (2).

, when the divided voltage generated in the resistors R1 to R3 of the voltage detecting section that divides the gold voltage is the voltage when the switching means is activated, and when the notification output is the sending power supply voltage, a voltage comparison is made to send out the line failure output. Department COMP consists of gold.

TMl, TM2 are timer circuits, G1 is comparator CMP1
G2 is a Nants gate circuit which uses the output of the comparator CMP2 and the output from the NOR gate circuit G3 as inputs.

K 19 K 2 t K s is a switch, T r 1
t T r 2 .

Tr3 is a transistor corresponding to the switch parts 81 to S3, and these are the NOR gate circuit G8 which is a gate circuit that performs the logical addition of the outputs of the transistors Tr1 to Tr3.
In addition, a line open monitoring circuit 5upk is provided which constantly monitors all currents flowing through the constant voltage circuits of the switch sections S□ to S3 and sends out all line open outputs when the current is interrupted.

Here, the switches 1 to 3 are transistors Tr1 to T corresponding to the switch parts 81 to S8, respectively, so that when the extra switch parts 81 to 83 are removed from the terminal block TER, the line fault output is not sent out incorrectly. This is provided to forcibly apply a base current to r8 and cause the transistor to shift to the on state.

This line open monitoring circuit Su is for lines L1 to L8.
The structure is such that, if a disconnection accident occurs in the line system, the transistors Tr1 to Tr3 connected to the line system will shift from the on state to the off state.

0UT1 is an output terminal that sends an alarm output sound, and the alarm output obtained from this output terminal 0UT1, for example, activates the automatic dialing device 4 and sends the telephone line to a specific location, i.e., to the center (policy, police, etc.). It is configured to send pre-recorded messages.

Also, 0UT2 is the output terminal that sends out the track fault output sound,
The line failure output obtained from this output terminal 0UT2 is configured to alert you to a line failure by sounding a buzzer or the like. Note that VDD is the power supply, and this power supply VDD
The voltage is set to 12V.

Next, the entire operation of the embodiment shown in FIG. 2 will be explained.

1. In the steady state, voltage regulating diodes zD2a-2D2c are inserted in the lines L1-L3, respectively, so the divided voltage V1-V3H■1-V3=Vcp-Vz2(
3,2V210V-6,8V), the value of %3-2V is shown.

The comparator CMP is set σ so that it does not turn on (output is 90") unless ■1 to ■3> vop-Vl2, so it is in the off state, that is, the output is 'X
1” is maintained.

In addition, the comparator CMp2 is adjusted to a voltage value that does not turn on (output force tO") unless V□~■3〉vcp-vzl, so the comparator CMp2 is in the off state, that is, the output cuff 5: S + " state □While holding, timer T
M is provided to prevent an alarm from being issued when the switch units 81 to S3 are operated by mistake, and its time constant is set to, for example, ■s) If the switch sections S□ to S3 do not operate, the alarm output obtained at the output terminal 0UT1 will not become 1.

1. Timer TM2 protects the lines L1 to L3 from momentary interruption or noise to prevent a line failure signal from being generated, and the time constant is smaller than the time constant of timer TM1, which is 300 m8 in this embodiment. It is set.

Next, when any of the switch sections S□ to S3 operates, a series circuit of the closed switch of the operated switch section and a constant voltage diode of the Zener voltage Vzl is formed.
Divided voltages V1 to v3, for example, divided voltage v1 is V1==■op-vz 1 (6,8V=10V-3,2
V) [Relationship color comparator CMP of pickpocket, vz1<Vl2
1 transitions to the on state, its output goes from 11" to "0"
Therefore, if one input of the NOR gate G1, which is the entire output of this comparator CMP1, becomes from 1 to 10'',
The output 'X □' becomes 'X 1 ', and therefore the alarm output changes from 'O' to '91' after a certain period of time determined by the time constant of timer TM1.

In this case, it is the other input "O" of the NOR gate G1.

The alarm output thus obtained is sent to the outside through the output terminal OUT, and, for example, an automatic dialing device is activated to send a prerecorded message to the center or the police.

Next, when one of the lines L1 to L3 is disconnected, the divided voltage of the disconnected line system becomes zero, so the line open monitoring circuit S
Corresponding transistors T r 1 to Tr 3 of UP
One of them shifts from the on state to the off state, and the output of the NOR gate circuit G3 changes from 1" to 0, so the other input of the Nands gate G2, which is the output 4 input of this NOR gate G3, changes from 91" to "0". O", its output changes from "0" to "l", and the Nando game G
The output of 2 is input to timer TM2, and the output of timer TM2 changes from ``O'' to ``1'' after a certain period of time determined by the time constant.
The line fault output obtained at the output terminal 0UT2 changes from 10" to 51".

When one of the lines L1 to L3 is short-circuited, the divided voltage Vl-v3 of the short-circuited line system, for example, the divided voltage v
1 becomes Vl""1Vcp, the comparator CMP2 is on condition, that is, Vl
〉Vop-Vzl is completely satisfied, its output goes from ``1'' to 10'', and the output of the comparator CMP2 is set as all inputs) One input of G2 goes from ``1'' to ``O'', so its The output goes from 10″ to 1.

The output of this Nant gate G2 is the timer TM2.
The output of timer TM2 changes from ``O'' to 11'' after a certain time determined by the time constant, and the line fault output changes from ``O'' to 11''.

In this case, the other input of the Nant gate G2 is "1".

At this time, the line failure output is closed to NOARG1 and the alarm output is held at 2.0''.

This means that when the line is disconnected, no voltage is generated across the resistors R1 to R3, and no false alarm is generated, but when the line is short-circuited, the power supply voltage .

. This is because false alarms may occur.

The line failure output due to line breakage or short circuit obtained in this way is sent out from the output terminal 0UT2, and is sounded by a buzzer or the like to notify that there is a line failure.

In this way, it is possible to separately output the notification output and the track failure output money.

As is clear from the above explanation, according to the present invention, the notification output and the track release output sound can be produced separately with an extremely simple configuration without using complicated means, and the number of switches can be easily increased or decreased. Since it can provide a reporting circuit, the effect of the above is extremely effective.

Since it is possible to constantly monitor track conditions such as short circuits, it is possible to immediately notify all of the faults that occur on the track due to other construction work or other accidents, as well as to notify the operator of faults caused by faults caused by short-circuit sensors on the track. It is extremely effective even though it has the drawback that it disappears when it is sent out and the information becomes accurate.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing an example of a conventional notification circuit, and FIG. 2 is a circuit diagram showing an example of a notification circuit according to the present invention. S1 to S3-...Switch section, ZD1a to zD1
c. ZD2a-ZD2c... Constant voltage diode, 5
a-8c...Switch %R1~R3...
・Resistance, COMP...Voltage comparison section, SUP...
...Line open monitoring circuit, Tr1 to Tr3...
・Transistor, G3...Noah gate.

Claims (1)

[Scope of utility model registration request] When an abnormal situation such as a fire, gas leak, or intrusion occurs, this is detected by a switch section placed at a predetermined location as a total abnormality detection circle sensor, and a button is pressed on the notification circuit that notifies the occurrence of an abnormality. a series circuit consisting of a constant voltage circuit and a resistor of a voltage detecting section that divides the power supply voltage; a switching means provided in the switch section for switching a constant voltage drop of the constant voltage circuit; and a resistor of the voltage detecting section. a voltage comparator unit that outputs a notification sound when the divided voltage generated at the switching means is the voltage at which the switching means is activated, and sends out a line failure output when the voltage is the power supply voltage; It has a transistor connected to the switch section and a gate circuit that logically adds the output of this transistor, and constantly monitors the amount of current flowing through the constant voltage circuit of the switch section, and generates a line open output when the current is interrupted. A reporting circuit that is connected to the line open monitoring circuit that sends out the signal.