JPS58203592A - Centralized gas monitor system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention provides an electric jj
This is related to the gas central monitoring system that utilizes the line conveyance system, and in the case of centralized IP buildings that require strict regulations, there is a risk of fires, explosions, or suicides due to sagging due to operational errors or aging equipment. It is Tora's feeling that the residents are feeling very anxious about whether it is an accident caused by the pond or a large amount of damage to the living area of the pond. Therefore, gas detectors are installed in each IF residence, and information such as gas leaks is centrally monitored in the manager's room.
If an abnormality such as a gas leak occurs, the gas central monitoring panel (set in the manager's room) displays and alerts the manager so that he or she can respond and, if necessary, contact the service company. A method has been proposed.

However, in the 11 types proposed up to 2012, information is transmitted between the gas detectors installed in each residence and the gas central monitoring panel using a dedicated line. Therefore, it is not popular because the installation work is complicated and very expensive. Moreover, it goes without saying that installation is even more difficult in existing apartment buildings.

In view of the conventional problems such as α, the present invention uses power line transport to transmit information between a plurality of gas detection transmission units and a gas central monitoring panel, and eliminates the need for wiring work between each child unit and the monitoring panel. The purpose is to significantly improve economic effects by eliminating construction costs and significantly reducing the burden of construction costs.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
1 shows a configuration system diagram of the present invention,
and a plurality of gas detection and transmission slave units 2, the monitoring panel 1 is placed in the manager's room of the housing complex, and each gas detection and transmission slave unit 2 is placed in each unit in the housing complex. Transmission and reception of data signals between the gas detection transmitter Wi2 and the monitoring panel 1 is performed using AC1 (
A power line transport method is adopted in which a data signal is superimposed on the 10V line 3. Therefore, the adoption of the power line transport method has the great advantage of eliminating the need for construction of conventional signal dedicated lines. A header signal that informs the timing by lighting each gas detection transmitter 112i from the monitoring panel 1 is transmitted at certain time intervals in synchronization with the cycle of the power supply, and the mustard PIi2 that receives this calculates from the header signal and +li, a predetermined position every 2 (on the second day, the status of the gas detection transmission slave unit 2 is hooded (4 bits) is transmitted to the monitoring panel 1. This off-site, 61), J
One cycle of Iz or 51') Hz is assigned to one bit, and response signals are sent out sequentially from the slave unit hood () in synchronization with the power supply, and the monitoring panel 1 transmits each gas detection transmission slave unit 2.
The signal is read and displayed/alarmed at the position (slot) corresponding to the position.

The monitoring panel 1 consists of a power line transmission receiving section 4, a control recognition section 5, a display switch 6, an alarm 7, a occupancy/unoccupancy setting section 8, etc., and the monitoring panel 1 monitors the occurrence status of gas leaks and the status of some gas sensors. Malfunction, power off of handset, transmission line (AC100)
It is possible to know the transmission status of the V line) and the open/close status of the shutoff valve (gas main valve for each unit), and also to set and display the occupied/unoccupied status of each unit.

Conventionally, as a terminal device, as shown in FIG. 2, an energization initial ringing prevention circuit 9 and an alarm delay circuit 1(), l are used.

A gas detector 15 consisting of an IUD flashing display circuit/buzzer intermittent sounding circuit 11, a gas sensor 12, an output detection circuit/temperature compensation circuit 13, a constant voltage power supply circuit 14, etc., a control/recognition section 16, and a code setting section. 17, power line carrier transmitter/receiver 18,
A separate type (2) in which the transmitter fi20 consisting of the power supply section 19 and the like is separated has been used.
As shown in the figure, a gas sensor part 21, a control/recognition part 2
2. An integrated type that integrates the hood setting section 23 and the power line transmission/reception section 24, etc., or as shown in FIG.
A removable type in which part of the sensor 21, such as the output detection circuit and temperature compensation circuit 26, can be removed and replaced at the dotted line section■
It is.

Here, we will discuss the conventional separation type and the method used in the present invention.
Comparing the integrated type ■ and the removable type ■, it can be seen that by integrating the conventional gas detector 15 and the transmission fljt2o
This makes it possible to share the circuit with the gas central monitoring system, making it possible to miniaturize the device as a single terminal.As a result, there are many advantages in terms of manufacturing, appearance, etc., making it extremely advantageous.

Separation type ■ is a method that uses a gas detector 15 currently on the market. The outdoor buzzer output terminal of the detector 15 is controlled and recognized by the IC'
+ to constantly monitor the space detector 15,
This state is sent to a slot determined based on the header signal from the monitoring panel 1 via the power line transport section l;j according to the data of the coat setting 31S17, and the monitoring panel 1 receives this and displays information and issues an alarm. section.

The integrated type ① integrates the gas detector and the transmission cordless unit, and thereby achieves the effects described in 1 above. That is, the microcomputer used in the control/recognition unit 22 is equipped with 77 towware to control the circuits of the detector 15 (see Fig. 2), including the energization initial ringing prevention circuit 9, the alarm delay circuit 10, and the intermittent buzzer ringing circuit 11. By processing this, it can be eliminated from the circuit configuration of the space detector 15, and the configuration can be significantly simplified. Further, the constant voltage power supply circuit 14 of the gas detector 15 can be shared with the constant voltage power supply circuit of the transmitter Ps, 20, and the circuit configuration of the gas detector 15 is as follows.
Only the sensor 12 and the output detection circuit/temperature compensation circuit 13 that adjusts sensor variations or compensates for temperature are required, and the effect of integration is remarkable.

In addition, for the removable type (2) in which part of the sensor 21 is removable and replaceable, please report the sensor 25 and its output detection circuit/temperature compensation circuit, which is the circuit that adjusts the variation, to the insurance company or service center. IS! It is also easy to deploy machine security. Further, the present invention can be applied to the case where the monitoring panel 1 and each terminal are connected by weak radio waves or signal dedicated lines.

Next, the configuration and operation of the integrated type (2) transmission slave device 2 will be specifically explained. tJS4 and FIG. 5, when the gas concentration increases, the internal current of the gas sensor 25 increases, and the electric current (t) of the load resistance R1+R2 increases.

This voltage increase is also applied to the humpator 28 via the variable resistor \'R2.

-Noi, diode 29, capacitor 30, resistor R3,
A voltage from a stabilized power supply section consisting of a Zener diode 31 and the like is applied as a reference voltage to the humpator 28 via a variable resistor R1 through a temperature compensation circuit composed of a resistor R6 and a thermistor R5. The voltage 31 is applied as a reference voltage a to the comparator 27 through a variable resistor \゛[<3.Reference voltage a is the gas explosion limit concentration]/11) (1. W (If you set the sensor detection voltage at the time of seismic intensity 1/'1, the gas concentration will reach the explosive limit concentration 1
/100, the comparator 27 outputs C. Furthermore, when the explosive limit concentration reaches 1/4, comparator 2
8 outputs D. 32 is the power line (AClooV), 3
A power transformer 8 supplies power to the sensor 25 and the output detection circuit, and also to the control recognition section and the conveyance section via stabilizing power supply circuits 39 and 40.

41 is a coupling transformer for transmission, 42 is a conveyance increaser section, 43
44 is a carrier oscillator, 44 is a receiving coupling transformer, R8 is a matching and protection resistor, and CI and Ll are series resonant circuits for the carrier frequency. 45 is a carrier signal receiving section, which is inputted to E of the control microcomputer 47 via a noise canceller circuit 16. 48 is a power cycle detection unit, 49 is a low concentration (1/10n) display LED, and 50 is 1
．． , ED 49 switching transistor, 5]
is a high concentration (1/, t) display 1. E D, 52 is LED
51 switching transistor, 53 alarm buzzer,
5.1 is a hood setting section, and if an 8-bit switch is used, for example, 256 settings are possible. C is the low concentration output, l) is the high concentration output, and is the input to the control microcomputer 17. K is the response to monitor board 1 (
i? By switching the switching transistor 55, the transport signal 1d is switched on and off by the 7-channel ET56, and is sent to the power s32 via the multiplication part 42. This intermittent timing is determined by the power cycle detection unit 4.
Based on the detection output of 8.

In the configuration described above, when there is no gas leak, that is, under normal conditions, neither the low concentration output C nor the high concentration output requires manual effort.
l': D4], 1. , EI')51 are both orf
"L, 7 sir 5: (is stopped 1. When received at the input E of the user 47, the signal set by the code setting unit 54 [1 always without gas leakage set in the position of the order of 2 (manual power G)] is output from K.Low concentration gas In the event of a leak, there is an input for the low concentration output C, and there is no input for the high concentration output, so
L, ED 49 and I-.

ED51 blinks alternately, and the buzzer 53 stops.
-L, and the output is the same as normal. When there is a high concentration gas leak, there is an input for the low concentration output C and an input for the high concentration output, so L E D 49 is turned off.
, 1. , El') 51 lights up, the buzzer \-53 makes a sound, and the output K1. Outputs tff leakage signal. The output of the control microcomputer (1) 7 is transmitted to the monitoring board 1 via a power line transmission section (2), and the monitoring board 1 disconnects this and displays and warns according to the situation.

1- Compared to the previous set in which the gas alarm and the power line carrier were separated as described above, the control microcomputer 47
By having the gas alarm function as the component part (described above), the circuit configuration can be simplified and other effects are significant. Note that the separation points in FIGS. 4 and 5 correspond to the separation points of the removable type shown in FIG. The manufacturing variation of the sensor 25 is - Variable resistance on the field side\; R1,\7) (2, VR
By precisely adjusting 3, it becomes possible for general users to perform paternal replacement. I.

The input of N1 is the sensor d block (Fig. 4) and the transmission section (Fig. 5).
are attached and detached, and I5. If one room becomes open,
The microcomputer 47 detects this and outputs a signal to the output K indicating that a part of the sensor has come off, and the monitoring panel 1 also displays that a part of the sensor has been removed. Therefore, even if a part of the sensor is intentionally dislodged, it can be recognized on the side of the monitoring board 1, and is always effective, especially in detecting suicide victims. However, when the power to the transmission section is disconnected,
Abnormalities in the power line can be detected because there is no response to the signal.

The present invention is equipped with a gas central monitoring panel and a plurality of gas detection transmitters 7, and a gas detection transmitter f[(plural) However, since it uses a power line transmission method that sends the information of the corresponding fPIi to the power line in a preset order and displays this information on the Daito Central monitoring board, it can be used to The signal line that communicates with the machine becomes the key point, and the economic value of it is extremely large, as it significantly reduces the labor cost.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram showing an embodiment of the present invention, Figure 2 is a terminal configuration diagram of a conventional type, Figure 3 is a terminal configuration diagram of a removable type (2) used in the present invention, Figures 1 and 5. The figures are the same <
It is a circuit diagram of integrated type (■). l: Monitoring panel, 2: Person detection transmission cordless unit, 3: AC] OOV
Line, 1: Power line transport cost control section, 5: Control recognition section,
21: part of the sensor, 2: control/recognition section, 24: power line carrier receiving section, 47: control microcomputer. Applicant Sharp Corporation Agent Tsunehisa Nakamura

Claims (1)

[Claims] Enjoy the gas central monitoring panel and multiple human detection transmission cordless units,
The human detection transmitter 1 (multiple) that receives the header signal sent from the gas central monitoring panel to the power line transmits the information of the relevant human detection transmitter to the power line in the preset order. The gas central monitoring system 8 is characterized by displaying this information on the gas central monitoring panel.