JPS5831633A - Signal transmitter - Google Patents

Abstract

PURPOSE:To simplify the circuit constitution and installation works through decreased number of receiver circuits, by transmitting at least (>=3) different signal voltages to a receiver in accordance with the detecting state of a stator provided for each slave device. CONSTITUTION:Normally, voltages detected by gas sensors 14a and 14b are ea=eb=6V. A voltage detector 18 of a relay device 12b discriminates the eb(=6V) and gives an output, a switch circuit 16 turns on and a voltage presence signal in 6V is transmitted to an output terminal 8b. On the other hand, a voltage detector 38 in a relay device 12a discriminates the signal voltage in 6V and gives an output, a switch circuit 36 turns on and transmits the ea(=6V) to the receiver via a signal line l1. If the sensor 14b detects leakage of gas and produces an eb(=12V), voltage detectors 18, 22 and 26 turn on switches 16, 20 and 24 and applies the eb(=12V) to a terminal 4a. In this case, a switch circuit 40 in the relay device 12a is turned on and the eb(=12V) is transmitted to the reception side. If the eb is zero, the signal line l1 also goes to 0V.

Description

[Detailed description of the invention]

In the present invention, a plurality of slave units are sequentially connected to a signal line drawn out from a receiver (i! It relates to a signal transmission device that outputs voltage to a receiver. Conventionally, in this type of signal transmission device, for example, a gas leak alarm device, a gas sensor is connected to a signal line drawn out from the receiver. The power source is a commercial power source C100V, and the detection status is 6 volts under normal conditions with no gas leaks, 18 volts when gas leak is detected, and KO volts when the power source C100V is cut off and the Senna stops functioning. The ME is configured to generate different voltage outputs depending on the ME.Therefore, in order to detect multiple gas sensors using a receiver, K is configured to generate different output voltages for gas leakage, normality, and failure in each detection state. It is necessary to pull out a signal line from the receiver each time, and the number of signal lines increases depending on the type of detection state.
For this reason, when it comes to centralized gas leakage monitoring equipment in residential complexes such as apartment complexes, the equipment configuration becomes complicated and
The strike was also high, and there were 5 problems. The present invention has been made by focusing on such conventional problems, and the detection state of the carp and sensor can be determined by sequentially connecting a plurality of slave units having gas sensors etc. to the signal line drawn out from the receiver. In order to be able to transmit at least eight different signal voltages depending on the signal voltage to the receiver side via the same signal line, the It is an object of the present invention to solve the above-mentioned problems by making it possible to transmit a specific signal voltage through an intermediate device at the front stage of a receiver ll1K according to this priority even when the detection state is different. The present invention will be explained below based on the drawings. FIG. 1 is a block diagram showing the configuration of an apparatus according to the present invention. First, to explain the configuration, signal line 4 and common [4 are each pulled out from the pot transmitter 10, and signal line 4 is connected to middle 1 as a slave unit. ! 4112m, 12b are connected in sequence, and each repeater 121. The lZb includes gas leak detectors (hereinafter referred to as "gas sensors"5') 14a, 14b.
is connected

[There is. The gas sensor 14&, 14b uses commercial AC 100V as a power source, and its output voltage C is Keo = 6 volts under normal conditions, Keo - 12 volts when detecting a gas leak, and furthermore, when a failure occurs when the commercial AC 100V is cut off, e, =
Different signal voltages are produced depending on each detection state of 0 volts. Figure 2 shows the middle ts vessel 124 shown in Figure 1. FIG. 2 is a block diagram showing a specific configuration of Igb. Repeater 12a#
The configuration of the limb is Gassen'? 14b was connected. An input terminal 4 which has input terminals sb and g'b and which applies a signal voltage from another intermediate
b. 6b, and an output terminal 8b for transmitting a signal voltage from the repeater to the receiver side. The detection signal eb from the gas sensor 14b is sent to the voltage detector B6.
voltage detection 1) 86 is applied to the gas leak detection 1 c
b = 18 The switch circuit 14 determines the < generates an output; and is turned on by the output of this voltage detection 41116.
(first switch path) is provided, and the switch circuit z4
A detection signal of &164geall volts at the time of gas leak detection is sent to the output terminal 8bK via the diode Dll. On the other hand, the signal voltage from the input terminal is voltage detection -18,8
8, and the voltage detection I) 18 is O.
The voltage detector 2s is configured to discriminate and output a signal voltage other than the voltage signal, that is, a voltage signal, and to discriminate and output a signal voltage of 1B volt. When the voltage detection 1118 determines that the signal voltage is 6 volts or 1z volts, it turns on the switch circuit (third switch circuit 16) and sends the signal voltage of the input terminal 6b to the output terminal 8b. , the voltage detector 2z turns on the switch circuit (eighth switch circuit) 20, and the switch circuit 8° outputs the signal voltage of the input terminal i to the output terminal 8bK. . The configuration of the repeater 1sb is the same for the repeater 18 located at the front stage of the receiver, and the repeater 1sb is
The interconnection between la, ilb is signal III
4, the output terminal 8b of repeater IBb and relay 1)
The input terminal 4a of 111m is connected to the receiver Kli via the output terminal 81 of IBm and the low signal Ji4,
Furthermore, the common line 4 from the receiver is connected to each repeater 12a,
IBb ec is sequentially connected. Also, since there is no other repeater in the succeeding stage of the terminal 18bK located at the final end, the jumper 11taK connects the input terminals 4b and 6b to I1! It is controlled. On the other hand, another relay 41 is located between the middle fIs devices.
Input terminal 6a is not used in 1aMK. Next, an overview of the operation of the repeater will be explained with reference to the embodiment shown in FIG. First, under normal conditions with no gas leakage, the gas sensor 148. The detection voltage e of 14b is 6 volts. At this time, at repeater 1sb K,
Detection voltage eb is voltage detection 1) $6 and diode DII
, is applied to each of the voltage detectors 18 and 81 via jumper llA4, and the voltage detector 18 discriminates and outputs el■6 volts, the switch circuit 16 is turned on, and 6 volts is present at the output terminal 8b. Sending out voltage signals. On the other hand, in the repeater 11a K, the gas sensor 141
The detection voltage em=6melt from is applied to the voltage detector 111@, and the signal voltage of 6 volts sent from 5isxsb is applied to the voltage detector 88. through the input terminal 4a.
41, and for this reason the voltage detector 8
8 discriminates and outputs a signal voltage of 6 volts, the switch circuit 86 is turned on, and the gas sensor 1 is connected via the diode D.
A signal voltage of 6g=15 volts output from 4a is transmitted to the receiver side via output terminal 8aK sending signal #11. Next, the gas sensor 14b detects a gas leak, and ell=1
Assuming that a detection voltage of 2 volts is generated, the input voltage of each of the voltage detectors 18, 22, and 26 will be ~1 volt, and all the voltage detectors 1g, is, and 2a will generate discrimination outputs, and the switch circuit 16 , 1110 , 2
4, the detection voltage eb of the sensor 14b
Jf line 1. Sends 1g volt to output terminal 8bK. Relay via 1) Add iga input terminal 4JIK. At this time, the repeater 12m detects the detection voltage of the gas sensor 14Jl at 6.
The signal exit is performed based on the voltage of the voltage detector 4z f3 volts, but when the input terminal 48 K IB volts is added, in addition to the voltage detection of the voltage detector aSS, the voltage detector 4z
Distinguish the input of the signal voltage of volts and switch times W & 40
is turned on, and the signal voltage 1$1 from the repeater IJb applied to the input terminal 41 is transmitted from the output terminal 8a to the receiver via the signal mtI. Furthermore, relay 1! Ilb K connected gas sensor 1
In the event of a failure in which the commercial AC 100V of 4b is cut off, the detected voltage % from the gas sensor becomes 0 port, and the voltage detectors 18, 22, 26 and switch circuits 16, 80,
24 are not activated at all, and the signal voltage at the output terminal 8b of relay II 18b becomes Q#. At this time, in the repeater 181, the signal voltage 6 from the medium-II Ilb
Switch 86, which was turned on by the bolt, is connected to input terminal 4m.
When the signal voltage becomes O pol), the discrimination output of the voltage detector section stops and turns off, and the signal voltage from output terminal 8 becomes O volts, which indicates to the receiver that there is a gas sensor failure. A signal voltage will be sent out. Note that there are various states of the signal voltage output in the repeaters IBa and 111bic in addition to those exemplified in the above operation theory @, which will be explained later in Section 8 showing specific embodiments of the present invention. An explanation of the operation of the circuit configuration shown in the figure will be clarified. The M8 diagram shows 1l=1. FIG. 2 is a circuit diagram showing a specific embodiment of the signal transmission device of the present invention shown in the Z diagram. First, using the repeater 1ab as an example -)''CC explanation and the detection voltage eb of the gas sensor 14b when detecting a gas leak = 1
A circuit consisting of a transistor TI4, a Zener diode ZD connected to the base of the transistor Th4, and a resistor R14 is provided as a first switch circuit that discriminates and outputs 2 volts, and another relay connected from the input terminal Higashigaki. A circuit consisting of a transistor Tlt, a Zener diode ZD connected to the transistor TI, and a resistor B1 is provided as a 1s2 switch circuit that discriminates and outputs a signal voltage of 1 g volt when a gas leak is detected from a gas leakage device. Furthermore, as an eighth switch circuit that discriminates and outputs the normal output 6>=z9 volts of the gas sensor 14b and the signal voltage 6 volts from another repeater applied from the input end dried persimmon, the input end dried persimmon is connected to a resistor 8. A transistor 'I'ti is connected to its base through a diode Dll and a resistor, and its base is connected to its base through a diode Dll and a resistor.
A circuit is provided consisting of a transistor 'I'll connected to the collector of 'xs. Note that the diode D, ,D, is the transistor T□. This is a diode for preventing voltage withstand voltage to Tll, and the diode D11. D, is provided to prevent backflow. Furthermore, a Zener diode ZD1. connected to the base of the transistor T1m+T14. , each of the ZD trowels is a means for determining the detection voltage of 12 volts when detecting a gas leak, and the zener voltage of is, for example, vz=
It is set to 8 volts. On the other hand, the transistor 'I'll is made conductive by the Zener diode ZD□ connected to its base when a gas leak is detected, i.e., < ah m 1 g volt), and energizes the relay 80b connected to the collector of the transistor 'I'ts. The relay contacts are used to operate alarm indicators, alarm bells, etc. in the area where the repeater is installed. The circuit configuration of repeater IJb is repeater 1gm.
The same is true for [. Also, repeater 1B1. llb
The signal line connection between the terminals is the same as in the embodiment shown in the eighth rail, and the input terminals of the repeater IJb and eb are connected by a jumper l[4. On the other hand, the receiver lO has a voltage detection circuit bO to which the signal line t1 from the repeaters ISa and llb is input connected,
This voltage detection circuit bO discriminates between signal voltages of 0 and 6.18 volts, produces an output, and displays a display circuit! The detection status of failure, normal, and gas leak is displayed according to each SSK signal voltage. Further, 54 is a power supply circuit provided in the receiver 10, which supplies power to the voltage detection line ISO and display circuit 5B, and also supplies power to the power line LhL,
Power is supplied to the drive circuits of relays 80m and 80b for transmitting information provided in each of the intermediates 1ga and Igb through the relays 80m and 80b, respectively. Next, the operation of the embodiment shown in FIG. 3 will be explained. First, gas leakage monitoring states of the gas leakage relays 1118a and 1IBb gas sensors 148 and 14b based on S*< are in nine modes A to ■ shown in the machine table 1K. Table 1 The operation of the embodiment shown in FIG. 8 will be explained for each mode A-I shown in Table IK. Mode A (e, x eb=roasted bolt): In this state, the gas sensor 141. 14b has not detected any gas leak or failure, and its detection voltage e* = eb
= 6 volts, first, in the repeater 19b, the detection voltage clk is applied to the base of the transistor T1.0.
is diode D, 1. Jumper wire 4 and resistance wind 0. Therefore, the transistor T1m is turned on, and the transistor T
Since the base current flows, the transistor T0 turns on,
Output terminal 8bK sends out a signal voltage with detection voltage eb=6 volts. The signal voltage (6 volts) from this repeater 12b is transmitted to the input terminal 4m of the repeater 11m via the signal line t1.
The transistor Tu is turned on via the resistor Ru, and the transistor Tu is turned on, and the gas sensor 1 is turned on.
A signal voltage of 6 volts applied from 4m to the emitter of transistor T4 via diode D1 is applied to output terminal 8a.
The signal is sent to the voltage detection circuit 15 of the receiver 10 via the signal line. Therefore, the voltage detection circuit 60
determines that the received voltage is 6 volts, and displays on the display circuit 52 that the area where each gas sensor is installed is in a normal state with no gas leakage. Mode B (ea = IJ volt, Q proverb 6 volt);
This mode B state exists when the gas sensor 14a+ connected to the repeater 1B1 is detecting a gas leak, and the detection voltage e, we 1! Volt is transistor Tm
The Zener diode zD14 connected to the base of KIIk conducts, so that the transistor T turns on and sends out the detection voltage C,m 13% volts to the output terminal 8aK. On the other hand, the Zener diode ZD also passes the detection voltage ea = 12 mini 12 volts, the transistor T is also turned on, and the relay 8
0a- is energized, and the closing of the transfer contact activates an alarm means (not shown). At this time, from the repeater ] Jb, the signal II! A normal signal voltage of 6 volts is applied to the input terminal 4a of the repeater 1210 through 4, and each of the transistors T, , , and Tu is turned on. , a signal voltage of 12 volts is transmitted from the output terminal 8m to the receiver 10K. Therefore, in the receiver 10, the voltage detection circuit 50 determines whether a signal voltage of 1B volt corresponding to gas leak detection is received, and the display circuit displays an alarm indicating that a 5mK gas leak has occurred. Mode C (ea = 5 mini 5 volts xll volts); This mode C is the gas connected to the repeater 11b -)! ZD
,,, ZD,, ZDl, nosotLsotL is JIAL
, transistor T11 e 'I'14*''11 is turned on, and transistor Tit is also turned on due to transistor Tll being turned on. Therefore, repeater IBb is turned on.
A signal voltage of 12 volts is sent to the output terminal 8bl'C of the input terminal 41K of the preceding stage lza via the signal line.
A signal voltage of 12 volts is applied. The signal voltage of 12 volts at this input terminal 4m conducts the Zener diode ZD connected to the base of the transistor T.
u turns on and sends a signal voltage of 12 volts to output terminal 8. Gassen, of course? Normal detection voltage el from 14a
l = 6 volts turns on the transistor T, which causes the output terminal 8 to
Although aK is transmitted, it is included in the transmission of the signal voltage IS port by turning on the transistor T, and a signal voltage of 1B volt is transmitted to the receiver 10K. In this case, as in the case of mode B, the voltage detection circuit 50 of the receiver 10 determines reception of the signal voltage 1z volts, and displays the gas leak alarm on the display circuit 6fiK. -v--)"D (e@meb=lB volts); This mode D is the gas sensor 14 & of the repeater IBm, 12b.
This is a case where gas leakage detection is performed in each of 14b. In this case, in the repeater IBb, each of the transistors 'To to TfiI is turned on and sends out a signal voltage of 18 volts to the output terminal 8b, and on the other hand, in the repeater 18m, the detection voltage eb = 12 volts is applied, so that the transistor Ts4 is turned on. ．． Each of the transistors T is turned on, and each of the transistors Tel to Tu is turned on in response to a signal voltage of 1z volts from the repeater 12b, and similarly the output terminal 8 is turned on.
A signal voltage of 1B volts is sent to the terminal 1, and the receiver IO determines the received voltage 1zpolF due to gas leakage detection and displays a gas leakage alarm. Mode E (eaa++eQ volts, eb=6 volts);
(iD %-E is the gas sensor 14 of the repeater 11m.
This is the state at the time of failure when the commercial AC 100V was cut off in 1. At this time, since the output voltage ehw of 6 volts is generated in the normal state of the relay sensor 14b of the repeater 12b, the signal voltage from the output terminal 8b is 6 volts, and the transistor T is turned on via the resistor Ru. ing. . However, since the voltage across the transistor 'I'll is 0 volts, the transistor T3%, T,. are off, and the signal voltage at the output terminal ga also becomes 0 volts, so the voltage detection circuit 50 of the receiver 10
It is determined that the received voltage is 0 volts, and an alarm is displayed on the display 4-way 53 indicating that a failure has occurred in the gas sensor of the repeater. Mode F (6a x= 6 volts, @bWQ volts)
; This mode F is a case where a failure occurs in which the commercial AC 100V is cut off at the gas sensor 14b of the terminal repeater IZ'b. At this time, the transistors/T1 to T of repeater 1zb
ll are all off, and the signal voltage at the output terminal 8b is 0 volts. On the other hand, the normal detection voltage 9B=fj volts is applied to the repeater 181, but since the transistor T connected to the base via the input terminal 4a and the resistor R is turned off, K)? The sensor T is also off, so the output terminal 8a/) No. 1 voltage is also O volts, and the receiver 10 determines that the received voltage is 0 volts F and displays an alarm indicating that a fault has occurred in one of the gas sensors. do. Mode G (eaweb+=+xOmult); This mode q is gassen+141. Commercial A in each of 14b
This is a case where a failure occurs due to disconnection of CxooV, and in this case, all of the transistors provided in 11111111M and 12bK are turned off, and the 1ga repeater that sends the signal voltage to the receiver is turned off. The signal voltage at the output terminal 8m is also 0 volts, and the receiver 10 determines that the received voltage is 0 volts and displays an alarm indicating a failure in the gas center t. Mode H (ea = 12 volts, @i, == Q HoAt)); In this mode H, the gas sensor 14m of the repeater 131 has detected a gas leak, and the
This is a case where one gas sensor of unit A 1mb detects a failure. In this case, as is clear from the explanation of modes F and Q above, the signal voltage from the output terminal 8b of the repeater lzb is O volts, and the signal voltage is relayed by the gas leak detection voltage ea■12 volts from the gas sensor 144. Transistor TA of device 12m turns on due to conduction of Zener diode ZD,
A signal voltage of 13 volts is sent to the output terminal 81, and the receiver 10 determines a gas leak based on the received voltage of 1z volts, and displays a gas leak alarm in priority to a failure of the gas sensor 14b. Mode I (ea!: +IO volts, 6hmlj1% volts); This mode I is the gas sensor 14 of repeater II.
A fault was detected at the gas relay] Jb's gas sensor 1.
4b is a case where gas leakage is detected. In this case, the output terminal 8kl of the repeater 1mb is connected to the above-mentioned port C,
As shown in DK, the signal voltage lz volt is output and the transistor of relay l11111%e TtbT,,
T, are turned off by the fault detection voltage 6g-Q port, but the transistor Tll1 is turned off by the Zener diode ZDu by the signal voltage IB volts from the repeater 12b.
It turns on due to continuity and sends out a signal voltage of 12 volts to the output terminal 8, and the receiver 10 displays a gas leak warning based on the received voltage of 12 volts.
. In this way, 1.2. ．． In the embodiment of the present invention shown in Fig. 8, the highest priority is given to gas leak detection, followed by failure and then normality, according to the detected voltage from the gas sensor connected to each repeater. The voltage signal is sent to the receiver via the previous stage repeater. Furthermore, although the above embodiment takes as an example the case where two repeaters are provided, the present invention is not limited to this, and the number of repeaters connected to the receiver can be arbitrarily determined. w, Figure 4 shows the relay @ 1ga, H! used in the present invention.
FIG. 3 is a circuit block diagram showing another embodiment of FIG. First, to explain the configuration using the repeater 11b as an example, the repeater 12b K is provided with voltage detection 466L 66, 70 and switch circuits 60, 64, 68, respectively, and the voltage detector 62 receives voltage from the input terminal 4b. The switch circuit 60 determines the signal voltage of 1B volt from the other medium
In addition, the voltage detector 66 is configured to determine the normal detection voltage from the gas sensor llb (6b = x @ d) and turn on the switch circuit 64. Furthermore, the voltage detector 70 determines the signal voltage at the time of gas leak detection, which is the detection voltage of the gas sensor 1Bb, which is 6b x 19 volts, and turns on the switch circuit 68. The first switch circuit that discriminates the detection voltage 12 volts and sends out the K signal voltage 12 volts from the output terminal 8b is connected to the voltage detector 70.
．． The third switch circuit, which is composed of a switch circuit 68 and which discriminates the signal voltage 12polF from another medium fIA device, that is, the signal voltage applied to the input terminal 4b and sends it out to the output terminal 8bK, is a voltage detection * 62゜It is composed of a switch circuit 60, and further discriminates a signal voltage of 6 volts from its own gas sensor 14b and/or another repeater.[Output terminal 8b]
The eighth switch circuit that sends out K is the voltage detector 6.
6. It is now composed of a switch circuit 64. Next, to explain the difference from the repeater shown in Fig. 8, the repeater distinguishes the gas leak detection voltage 1z volt from its own sensor and the gas leak detection signal voltage IB volt from other repeaters and sends it out. 1. The second switch circuit, voltage detector 68.70 and switch circuit 60.68, is similar to the embodiment of FIG. In the eighth switch circuit that discriminates and outputs, the voltage detector 6
The input voltage to the switch circuit 6 is the detection voltage eb from its own gas sensor Igb, and the signal voltage applied to the switch circuit 6, which is turned on by the discrimination output of the voltage detector 66, is the signal voltage from another repeater. 5 so that the signal voltage from the input terminal 4b to which is input is applied. Also, the input terminal of the repeater is one of the terminals 4b. The repeater 12Jl also has the same configuration as the relay Is IJb, and the interconnection between the repeaters 18m and IJb is that the output terminal 8b and the input terminal 41 are connected through the signal line tlK.
The output terminal 8m of the medium-46IBM is connected to the receiver via the signal line, and furthermore, each medium 1i! Commons 84 are sequentially connected to 11 from the receiver. Also, in the repeater 11b which is the final end repeater, for the input end dried persimmon, the output of the gas center ISb is passed through the termination diode D, l1III! , will be done. FIG. M6 is a pull diagram showing the overall configuration of the signal transmission device of the present invention when the repeater having the configuration shown in the embodiment shown in FIG.
For K**) Repeater 1fia, IBb @=
*12n are connected in sequence, and the final end repeater 12nK has a terminating diode D connected in the same way as relay-1&b shown in Figure 4, and the receiver 1G; - device i11 ~] JnKl [Next, the common line of gas sensors t14 Hatake ~ 14n which is connected and inputs the K detection voltage of 1141 x@a -1ass
is also connected. FIG. 6 is a circuit block diagram showing a specific circuit configuration of another embodiment of the present invention shown in FIGS. 4 and 5, and shows the case where two repeaters are connected to the receiver. I'm taking this as an example. Note that parts corresponding to the circuit diagram of FIG. 8 are denoted by the same reference numerals. First, the configuration of the repeater is 1! ! 1) lB
Taking the case of transistor T14.b as an example, the first switch circuit that determines the gas leak detection voltage eb = 12 port from the gas sensor 14b and outputs it to the output terminal 8b is the transistor T14.b. It is composed of a Zener diode ZDu having a Zener voltage of 8 volts and a resistor R1, and also discriminates the signal voltage of 12 volts from another repeater, that is, the signal voltage of 12 volts applied to the input terminal dried persimmon, and sends it to the output terminal 8b. The second switch circuit consists of a transistor T*m, a Zener diode ZDl with a Zener voltage of 8 ports.
The eighth switch circuit is configured with l* resistors and further discriminates the normal detection voltage eb-6 volts of the j sensor 14b and/or the signal voltage 6 volts applied to the input terminal 4bK and sends it to the output terminal 8bK. A transistor T connects the output of the gas sensor 14b to the pace via a resistor R1.
A power plant ivy is placed between the i1e input terminal 4b and the output terminal 8b.
Transistor T□, transistor T with collector connected
The base of 1□ is the = rector Km of the transistor 'I'sa.
It is composed of a connecting diode Dll@resistor RuK. Note that the diode I)ts is a transistor "11*
A diode is provided to prevent reverse breakdown voltage of 'I'tm, and a diode Dll is provided to prevent reverse IIm. Furthermore, the relay II llb ec is the gas leak detection voltage eb W 1B
Zener diode ZDIm-) conductive at &le F. Tunister TII# relay 80b. A diode D, a droplet signal for alarm output, and a path for taking out the contact are provided. Even if the relay likm K is connected, it has the same circuit configuration as the relay 1) IBb, and the receiver 1G collects the signals and determines whether the signals are normal or not based on the discrimination output of the voltage detection circuit 50 that discriminates and outputs the signals received through the relay 1) IBb. A display circuit 5B for displaying gas leaks and troubles, a power supply to the voltage detection circuit ISO and the display circuit 58, and a power supply line, . A power supply circuit 64 is provided to supply power to a circuit having relays 80m and 80b for taking out contacts. Next, the operation of the embodiment shown in FIG. 6 will be explained according to the mode shown in 11-71 above. Mode A (ea m 6b = T3-rt): Transistor T1m is turned on by the normal detection voltage ebm6 volts from gas center t14b, and the signal voltage 6 volts is applied to transistor TsIK via the termination diode D. When 'I'ts is turned on, the transistor T11 is also turned on, and the signal voltage of 6 volts at the input terminal 4b is sent to the output terminal 8bK. On the other hand, in the repeater IJa, the transistor TI is turned on by the normal detection voltage from the gas sensor 14 heat, and the signal voltage of 6 volts from the relay 11 IBb is applied to the input terminal 41, so the transistor T1 When the transistor T is turned on, it becomes conductive and sends a signal voltage of 6 volts to the output terminal 8a. This signal voltage 6 port is the voltage detection circuit 60 of the receiver 1G.
It is determined that the detection pattern of each gas sensor is normal on the display circuit b8. Mode B (ea w Is bolt, @>m@volt)
; Gas leak detection voltage of Gassen 914m @ @ w 19
The volt causes the Zener diode ZD to conduct, turning on the transistor Tm, and sending out a detected voltage of 13 volts to the output terminal 8aK. At this time, relay 6! From 1Bb, 6 signal voltages corresponding to the normal detection output are input to the input terminal 4a.
A signal voltage of 6 volts is applied to the output terminal amK by turning on transistors T and T1.
The signal voltage from the transistor T(IBpol)K is included,
A signal voltage of 1 g volt is sent to the receiver 10 via the signal 114, which is determined by the voltage detection circuit 50 and a gas leak alarm is displayed by the display circuit 5B. Mode C (ea=6 & yt, eb=12 volts): Zener diion zDi4 becomes conductive due to gas leak detection voltage eb=12 volts from gas sensor 14b, transistor TI4 is turned on, and diode D0. The signal voltage of the output terminal 8bK1Z&root is sent out via the output terminal 8b. On the other hand, in the middle 18m 12a, the gas sensor 14 [
Due to the normal detection voltage 5a=fi volts, the transistor T
! 1°T1. are on, and input terminal 4 is on.
The Zener diode ZD conducts due to the signal voltage of 12 volts applied to the output terminal 8m1, and the transistor Tu also turns on, sending out a signal voltage of 12 volts to the output terminal 8m1,
detects this signal voltage of 12 volts and displays a gas leak alarm. In mode D (ea = 413-12 dt); relay 1) 12b, transistors T□, T8. and T1 are on, and a signal voltage of 1 B volt is sent to the output terminal 8b. Also, at the repeater 18m, the gas leak detection voltage ea = liB volts (K)? Injista T
□, 'r snow s and Tn are each on, and the signal voltage lB volts from the repeater 11b applied to the input terminal 41 is applied to the transistor T! 1#Ttl to the output terminal 81, and the receiver 10 detects a gas leak and displays an alarm. Mode 1 (e, = Q port, eb = 6 volts): The relay 11b is sending out a signal voltage of 6 volts from the output terminal 8bK with the normal detection voltage ebx = 6 volts, and at this time, relay! Since the detection voltage C- of 1B1 becomes 0 volts, each of the transistors Ttin Tus T14 is turned off, and the signal voltage of 6 volts from the repeater 1sb is applied to the output terminal 8i.
K is not sent, and a signal voltage of 0 volts is sent to the receiver 10, and the receiver 10 determines that the signal voltage is 0 volts and displays an alarm indicating the occurrence of a fault. Mode p (6, -6 volts, @h=+zQ volts);
Due to the fault detection voltage eb - zero volts, each of the transistors T□, T1 and T1 of the repeater IBb is off, and the voltage at the output terminal 8b is zero volts. At this time, the transistor T of the repeater 121 is in the ON state MK due to the normal detection voltage ea"6 volts, but since the eight voltage of the transistor 'I'tt is -MO volts, the transistor T□ , Tu are not turned on, and the signal voltage at the output terminal 8a becomes zero volts, and the receiver IO determines this signal voltage of zero volts and displays an alarm indicating that a failure has occurred.Mode G (e*deh=zero volts); Relay 1 ) 1
The respective sending voltages of 2b and 1gm are both zero volts,
The receiver IO determines this signal voltage of zero volts and displays an alarm indicating the occurrence of a fault. Mode l ((@@e IB bolt, @bxQ bolt);
The signal voltage sent by the repeater 12b is zero volts,
Since the voltage across the transistors TtI, T, of the repeater 12m is zero volts, the transistor T1
~T2. is off. On the other hand, due to the gas leak detection voltage @@+19 volts, the Zener diode ZD becomes conductive and the transistor T is turned on, and the signal voltage 1zpolF is sent to the output terminal 8, and the receiver 10 receives this signal voltage IS volts. gas alarm is displayed. Gas leakage detection voltage eb = 1! Repeater 11b by bolt
Each of the transistors Tll to T14 is on, and a signal voltage of 12 volts is sent to the output terminal 8b. Meanwhile, middle school 11th! Vessel 11! At la, the fault detection voltage e
,=F transistor l by Zep bolt! Il, t'
r,, IT each is off, but the signal voltage from relay 4111b that is applied to the input terminal is 0 volts.
turns on and sends out a signal voltage of 1z volts to the output terminal 8, and the receiver IO determines this signal voltage of 1B volts and displays a gas leak alarm. In this way, in the embodiment shown in Fig. K11g6, as well as in the embodiment shown in Fig. 8, each of the modes A to I in Table 1 is [Similarly, the signal voltage is sent out according to the priority order of gas leak, trouble, and normal.] will be performed on the receiver 10. FIG. 7 shows another Il cable configuration of the present invention using repeaters having the configurations shown in FIGS. 4 and 6. In addition to the connection configuration shown in FIG. Gas sensor! Signal from i-connection terminal! IL1, pull out the line 4, and output this signal III 4e K II number 1il unit 1
1b. ~lbm is installed, and for the terminal relay -12bm, a termination diode D is used in the same way as the middle Iik device 12n, and each middle -1! 12b+ -ISbm, respectively K
k'! The gas sensors 14tn to 14bmt' are connected to each other. The same applies to the final end repeater IZn. According to these five connection configurations, for example, repeaters Ill to
In a facility with 1 iln, if the number of guarded areas increases due to the addition of buildings, etc., there is no need to draw out a new signal line from the receiver IO, and the signal line can be connected from a repeater near the newly installed guarded area. You can easily expand the device by connecting multiple repeaters to this signal line in sequence.
It has the advantage of being able to In addition, the above example is a gas leak detection letter 1! 0 depending on
Although a gas leak central monitoring device that generates different detection voltages of 6.18 volts is taken as an example, the present invention is not limited thereto, and can receive at least eight different signal voltages from a single slave unit. The present invention can be applied to any appropriate signal transmission device that transmits signals to a machine. As explained above, according to the present 1lIK, a plurality of slave units are sequentially connected to the signal extracted from the receiver, and at least eight or more four In addition, since the signal voltage is set to 5K so that the signal voltage can be sent to the receiver side, for example, depending on the gas leak monitoring status, it can be changed to 18 volts when a gas leak occurs, 6 volts when normal, and 0 volts when the Senna power is cut off. When centrally monitoring slave units that generate signal voltages, it is possible to connect multiple slave units to the signal line from the receiver for centralized monitoring. The number of receiver circuits can be reduced, the circuit configuration and installation work can be simplified, and the cost of the device can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the overall configuration of the present invention, FIG. 2 is a block diagram showing an embodiment of the repeater used in the present invention, and FIG. Figure #14 is a block diagram showing another embodiment of the repeater used in the present invention, and Figure 5 is a circuit diagram showing another embodiment of the repeater used in the present invention together with a receiver. A block diagram showing the overall configuration of the present invention, FIG. 6 is a circuit diagram showing a specific embodiment of the repeater of FIG. 4 together with a receiver, and FIG. 7 is another embodiment of the device configuration of the present invention. FIG. 3 is a block diagram showing an example. 10...Receiver Iga, 12b, ISn, 12bt
*lsbm, 1Jnt a 15311m・
... Repeater 14m, 14b, 14bl,
14bm, 14n, 14nm...Gas sensor 4ae 4b, 6a, 6b...Input terminal 8a#8b...Song output terminal 16, *0.24.8
6.4G, 44.60.64.68.80.84.8
8 ・Song...Switch circuit 18, 8B, 26.88.4B, 46.6L 66
, 10.8L 86. H----------... Voltage detection excellent 60... Voltage detection circuit 5fl... Song indication circuit 64... Electric II circuit 4... Jumper wire t,... Signal 11 4...-:
1% line, L heavy...Tighten the power supply.

Claims (1)

[Claims] A plurality of slave units are sequentially connected to a signal line drawn out from a receiver, and at least eight or more different signal voltages are transmitted to the receiver side according to the detection state of a sensor provided in each slave unit. I'll send it to 5
In the K signal transmission device, each of the slave units described above has an input terminal for inputting the signal voltage from other slave units, an output terminal for outputting the signal voltage to the receiver side, and an output terminal for outputting the signal voltage from its own sensor. ! a first switch circuit that sends a % charged voltage signal to the output terminal after determining the sl voltage signal; A switch circuit of II8 that sends a cough voltage signal to the output terminal upon determining the first voltage signal from another handset applied to the input terminal; When determining each of the second voltage signal different from the voltage signal of l and/or the second voltage signal from another slave unit applied to the input terminal, the voltage signal is An i-number transmission W device characterized in that it is provided with an eighth switch circuit that sends out data to an output terminal.