JPH0118480B2 - - Google Patents

Description

[Detailed description of the invention]

This invention is provided between a plurality of terminal devices that transmit information signals such as fire signals and a central information processing facility, and transmits information signals sequentially via a pair of signal lines in response to a call signal from the central information processing facility. The present invention relates to a relay device for information gathering and monitoring equipment used for sending back information. Conventionally, in fire alarm equipment, etc., the transmission of signal information from fire detectors, disconnection detectors, T-type transmitters, etc. installed as terminal equipment to the central reception equipment has been carried out using repeaters for each type of terminal equipment. A signal transmission band is allocated according to the type of each information signal. However, as the types of information to be collected increase, it becomes difficult to allocate a dedicated transmission band for each information signal, and the number of repeaters must also increase, causing a rise in equipment costs. The purpose of this invention is to
It converts multiple types of information signals into a single transmission signal for common use, and assigns priority to the information signals to be collected in advance.When an information signal is generated from a specific terminal device, the highest priority information signal is selected. It is an object of the present invention to provide a relay device for information gathering and monitoring equipment that can transmit a large number of information signals with a small number of transmitted signals instead of information signals that are regularly collected. Preferred embodiments of the present invention will be described below, taking application to fire alarm equipment as an example. Of course, this invention is not limited to fire alarm equipment,
The present invention is applied to an appropriate information collection processing facility that collects two or more different types of information signals from a plurality of terminal devices and performs online processing. FIG. 1 shows the overall configuration of fire alarm equipment in which the relay device of the present invention is used, and is connected to a receiving equipment for processing collected fire information and a transmission line 9 consisting of a pair of signal lines. A plurality of commonly connected relay devices 10 (#N, #N+1, #N+2,...)
Consists of. First, in the receiving equipment 1 as a central information processing equipment, 2 is a control processing circuit using a microprocessor, 3 is a transmission transmitting/receiving circuit, and 4 is a control processing circuit 2.
input/output circuit, 5 is an operation panel equipped with a numeric keypad, operation command switch, etc., 6 is a fire light, line number,
Display panel with type indicator, buzzer, etc.; 7 is external accessory equipment such as a map board, CRT, printer, etc.; 8
is a power supply unit with a built-in battery for power outages. The operation of this receiving equipment 1 is such that, under the control of a control processing circuit 2, transmission data corresponding to the repeater 10 to be called is converted into a frequency code by a transmission transmitting/receiving circuit 3, and sent out sequentially to a transmission line. The returned data is reconverted and decoded, and when an abnormality is detected, the contents are immediately displayed on the display panel 6, a bell or a buzzer is sounded, and the relay device is controlled as necessary. The operation of this receiving equipment is based on the storage program, calling the relay device in a regular cyclic sequence to send back data, and automatic scanning according to the cyclic mode is performed, so a reply must be received within a predetermined time. It also has the function of determining that a relay device has failed, and also determining that a failure of consecutive relay devices is a break in a branch transmission line. On the other hand, the relay devices 10 are commonly connected via the transmission line 9, and are provided in plurality according to the number of terminal devices.
In the figure, the relay device 10 is (#N) (#N+1)
(#N+2)... is installed with the relay device number. Therefore, looking at the configuration of the relay device 10 (#N), 11 is a transmission transmitting/receiving section that converts the received calling signal based on the frequency code into a digital code, and converts and outputs the extracted information signal to the transmission line 9. . Reference numeral 12 denotes an input/output unit which sequentially extracts information signals from a plurality of different types of terminals as predetermined information code signals in response to a calling signal. The transmission transmitter/receiver section 11 and the input/output section 12 constitute a relay device according to the present invention, the details of which will be explained later. As a terminal device for inputting a fire information signal to this relay device 10, 14 is a fire detector, a plurality of which are provided for each detector line L ₁ , L ₂ , ...L _o , and are activated when a fire occurs. Sends a detection signal.
Further, 15 is a terminator for each sensor line L ₁ , L ₂ , . . . _Lo , which is used to determine disconnection. When the fire detector 14 and the terminator 15 operate, the alarm/disconnection detection circuit 13 transmits a fire signal or a disconnection signal. Furthermore, 16 is a T-type transmitter, which transmits a patrol signal by operating a patrol key and a fire call signal by using a fire telephone. In addition, a release 18 is also provided which sends out a signal confirming the operation of a fire door or smoke exhaust port driven by a smoke prevention and exhaust control circuit 17 which is activated by a command signal from the receiving equipment 1 when a fire is detected. Reference numeral 19 denotes a power supply section for the relay device that includes a built-in battery for power outage. Furthermore, (#N+1) (#N+2)
Each relay device has the same configuration as the relay device (#N). FIG. 2 is a circuit block diagram showing an embodiment of the relay device according to the present invention, and in this embodiment,
first data selector 20, OR circuits 22 and 23,
The flip-flop 24 constitutes a portion corresponding to the input/output section 12 in the relay device 10 shown in FIG.
It constitutes a portion corresponding to the transmission transmitter/receiver section 11 in the relay device 10 shown in the figure. In FIG. 2, input/output of signals to and from the smoke prevention and exhaust control circuit 17 of FIG. 1 is omitted. In Figure 2, the information signals from the terminal equipment connected to the relay equipment have 18 circuits of 4 types: 6 circuits for fire signals, 6 circuits for disconnection signals, 3 circuits for patrol signals, and 3 circuits for fire telephone signals. An example is shown in which an information signal is input and connected. These 18 lines of information signals are input and connected to a first data selector circuit indicated by block 20, which is an input/output section. This data selector circuit 20 is a switching circuit 20 that switches between two inputs and outputs two inputs.
Channel data selector 20a, 20b, 20
It is composed of c. Each of the two-channel data selectors 20a, 20b, and 20c has input terminals Y ₀ , Y ₁ , and Y ₂ that are connected to output terminals Z ₀ , Z ₁ , and Z ₂ during normal operation, and control terminals A and B. _{It is} equipped _with input terminals _{X 0 ,}
With Y ₀ , Y ₁ , Y ₂ and input terminals X ₀ , X ₁ , X ₂ ,
It constitutes a plurality of input circuit means that receive information signals from a plurality of terminal devices divided into priority information signals and other information signals. Among the information signals of the 18 lines, the disconnection signal and the patrol signal are information signals that are constantly returned in response to a calling signal from the receiving equipment, and the remaining fire signals and fire calls are generated by any one of them. This is a priority information signal that is preferentially retrieved and returned when the information is received. Therefore, the input terminals of each channel data selector 20a, 20b, 20c of the first data selector circuit 20
Disconnection signals 1 to 3 are connected to Y ₀ , disconnection signals 4 to 6 are input to input terminal Y ₁ , and cyclic signals 1 to 3 are connected to input terminal Y ₂ , and output to output terminals Z ₀ , Z ₁ , and Z ₂ . On the other hand, input terminal X ₀ connected to output terminals Z ₀ , Z ₁ , and Z ₂ by priority switching receives fire signals 1 to 3, input terminal X ₁ receives fire signals 4 to 6, and input terminal X Fire telephone signals 1 to 3 are connected to input terminals 2 and ₂ , respectively. 22 is an OR circuit to which 6 fire signal lines and 3 fire telephone signal lines are connected as inputs, and which takes out the logical sum of the OR circuits.
This is to detect that a file has been generated. 24
is a flip-flop which is operated by the logic output of the OR circuit 22 and sends its output Q, to each channel data selector 20 of the first data selector circuit 20.
It is connected to control terminals A and B of terminals a, 20b, and 20c. This OR circuit 22 and flip-flop 24
The first data selector 20 constitutes signal selection means for selecting either the priority information signal or the constant information signal. That is, when neither a fire signal nor a priority information signal consisting of a fire call signal is being generated, flip-flop 24:
Each 2 channel data selector 20a, 20b,
With control terminals A and B of 20c, each input terminal Y ₀ ,
When Y ₁ and Y ₂ are connected to the output terminals Z ₀ , Z ₁ , and Z ₂ and at least one of the priority information signals is generated, the OR circuit 22 produces a logic output and the flip-flop 24 is activated, and its output By inverting the terminal Q, each channel data selector 20a, 2
0b and 20c are switch-controlled to connect each input terminal X ₀ , X ₁ , and X ₂ to output terminal Z ₀ , Z ₁ , and Z ₂ . The block indicated by 26 is a second data selector circuit that constitutes a transmission transmitting/receiving section together with a receiving converting circuit 28 and a transmitting converting circuit 30, which will be described later.
It is configured with 8 channel data selectors _26a , 26b, and 26c that switch and connect Q0 to _Q7 to output terminal Z, and in this embodiment, input terminals _Q4 to _Q7
It is used as a 4-channel data selector with grounded. Each channel data selector 26
The switched connection of a, 26b, 26c to the output terminal Z is made with a 3-bit digital control code applied to its control terminals A, B, C. That is, input terminals _Q0 to _Q3 are connected to output terminal Z using the digital control codes shown in Table 1 below.

[Table] Each input terminal Q ₁ to Q ₃ of each channel data selector 26a, 26b, 26c of this second data selector circuit 26 is connected to the first data selector 2.
0 channel data selectors 20a, 20b,
Each output terminal Z ₀ , Z ₁ , Z ₃ of 20c is input connected. Further, the output of an OR circuit ₂₂ for extracting the presence or absence of a priority information signal is branch-connected to an input terminal Q0 of the channel data selector 26a, and an input terminal Q0 of the channel data selector 26b is connected to an input terminal _Q0 for information signals other than the priority information signal. The output of an OR circuit 23 for detecting the presence or absence of a disconnection or a cyclic signal is connected to the input terminal Q ₀ of the channel data selector 26c, and a power supply abnormality signal for identifying an abnormality in the power supply for the relay device is connected to the input terminal Q 0 of the channel data selector 26c. The block indicated by 28 is a receiving conversion circuit, which uses a calling signal sent from the receiving equipment through the transmission line 9 to the control terminals A, B, and C of each channel data selector 26a, 26b, and 26c of the second data selector circuit 26. The output terminals OX, OY, and OZ are connected, and channel switching is performed using the digital control code shown in Table 1 converted from the calling signal. At the same time, a code reception pulse is sent from the output terminal P as an information extraction synchronization signal for converting and returning the information signal extracted by the second data selector circuit 26 to the receiving equipment. Since the calling signal received from the transmission path 9 is a frequency code signal composed of a combination of different frequencies (a), (b), and (c) in the transmission order, the reception conversion circuit 28 Converts the frequency code signal into a digital code signal and outputs it to the output terminals OX, OY,
It is sent as a parallel digital code signal from OZ.
An example of code conversion in this reception conversion circuit 28 is shown in Table 2 below.

[Table] The block indicated by 30 is a transmission conversion circuit, which converts the information signals extracted by the channel data selectors 26a, 26b, and 26c of the second data selector 26 to the input terminals IX, IY, and IZ as parallel information digital code signals. This digital code signal is converted into a frequency code signal consisting of a combination of transmission orders of different frequencies ( ₀ ), ( ₁ ), and ( ₂ ), and is sent to the transmission line 9. An example of code conversion in this transmission conversion circuit 30 is shown in Table 3 below.

[Table] Furthermore, the timing control of code conversion and transmission in the reception conversion circuit 30 is performed based on the code reception pulse from the output terminal P of the reception conversion circuit 28. The relay device 10 of the present invention having the circuit configuration as described above uses the call signals C1 to C4 shown in Table 2 above.
The first data selector 20 is decoded and sequentially controls the second data selector circuit 26.
and OR circuits 22 and 23 as well as information signals directly inputted from the terminal equipment are returned from the transmission conversion circuit 30 to the reception equipment via the transmission path 9. Therefore, the operation of the relay device of the present invention shown in FIG. 2 will be specifically explained by taking as an example the case where a specific terminal information signal is generated. For convenience of explanation,
The calling signal converted and sent by the receiving conversion circuit 28 is expressed as a "Cn calling code signal (OX, OY, OZ)" based on Table 2 above, and the information code signal input to the receiving conversion circuit 30 is expressed as shown in Table 3 above. Based on this, the information code signal (IX, IY, IZ) is expressed as a bit code of "0" and "1" in parentheses. First, when no information signal is generated from any terminal equipment, a C1 call code signal (0, 0,
0) is sent, the second data selector 26
Each channel data selector 26a, 26b,
26c responds to the C1 call code signal (0, 0, 0) applied to the control terminals A, B, C, and input terminal Q ₀
Connect to output terminal Z. However, each input terminal
Since no information signal is added to any of Q ₀ , the second data selector circuit 26 sends the information code signal (0, 0, 0) to the transmission conversion circuit 30.
The receiving conversion circuit 30 sequentially sends frequency codes ( ₀ , ₁ , ₂ ) to the receiving equipment. This frequency code is reconverted into an information code signal (0, 0, 0) in the receiving equipment, and this means that no terminal information signal is generated in the calling relay device, so the subsequent calling signal C2 ，
C3 and C4 are not sent, and the call is transferred to the next relay device. Next, the operation when the cyclic signal 2 is generated by operating the cyclic key of the T-type transmitter will be described. First, when the repeater is called by the receiving equipment with the calling signal C1, the receiving conversion circuit 28 transfers the calling code signal (0, 0, 0) to the second data selector circuit 26.
Therefore, each channel data selector 26a, 26b, 26c connects each input terminal _Q0 to the output terminal Z in response to the control code (0, 0, 0) applied to the control terminals A, B, C. . Since the cyclic signal 2 is generated at this time, the OR circuit 23
The presence of the cyclic signal is extracted and added to the input terminal _Q0 of the channel data selector 26b,
Therefore, the second data selector circuit 26 sends out an information code signal (0, 1, 0), which is sequentially sent to the receiving equipment as a frequency code ( ₀ , ₂ , ₁ ) by the transmission conversion circuit 30. Therefore, the receiving equipment decodes the returned information code signal and determines that at least one cyclic signal or disconnection signal is generated by the T-type transmitter or disconnection detector of the called relay device, and the cyclic signal is In order to determine whether it is a disconnection signal or a disconnection signal, the calling signal C2 is sent to the same relay device again. Then, receiving converter 2
8 supplies the C2 call code signal (1, 0, 0) to the second data selector circuit 26 and inputs the input terminal of each channel data selector 26a, 26b, 26c.
Connect Q ₁ to output terminal Z. Each of the input terminals _Q1 is connected to the output terminal _Z0 of each channel selector 20a, 20b, 20c of the first data selector circuit 20, and is used to generate a cyclic signal or a disconnection signal other than the priority information signal. Therefore, the logic output of the OR circuit 22 does not operate the flip-flop 24, and with its output Q, each channel data selector 20a, 20b, 20c connects the input terminals Y ₀ , Y ₁ , Y ₂ to the output terminals Z ₀ , As a result, the first data selector circuit 20 sends the information code signal (0, 0, ₀ ) to the channel data selectors _{26a ,} 2 from each output terminal Z0.
It is sent to the input terminal _Q1 of 6b and 26c. As a result, the second data selector circuit 26 takes out the information code signal (0, 0, 0) and sends it to the transmission conversion circuit 3.
0, the frequency codes ( ₀ , ₁ , ₂ ) are sent out in sequence. The reply information from the relay device based on this calling signal C2 is related to disconnection signals 1 to 3, and in order to obtain the remaining disconnection signals 4 to 6, a calling signal C3 is further sent to the same relay device. The receiving conversion circuit 28 that received the calling signal C3 converts and outputs the C3 calling code signal (0, 1, 0), and therefore each channel data selector 26a, 26b, 26 of the second data selector circuit 26
Each input terminal Q ₂ is connected to each output terminal Z of c,
As a result, the information code signals (0, 0, 0) of the disconnection signals 4 to 6 given via the first data selector circuit 20 are extracted, and the transmission conversion circuit 30
The frequency code ( ₀ , ₁ , ₂ ) is sent out sequentially. Furthermore, the call signal C4 is sent out, and the reception conversion circuit 28 converts and outputs the C4 call code signal (1, 1, 0), and each channel data selector 26a, 26b, 26c of the second data selector circuit 26
each output terminal Z is switch-connected to each input terminal _Q3 ,
As a result, the information code signals (0, 1, 0) of the cyclic signals 1 to 3 given via the first data selector circuit 20 are extracted and sent to the transmission conversion circuit 30.
It is transmitted sequentially as frequency codes ( ₀ , ₂ , ₁ ). Therefore, upon receiving the return calling signal C4, the receiving equipment determines that the calling signal (#N) has received the circulating signal 2, and displays this fact on the display panel or the like. Next, the operation when the fire signal 5 is input to the same (#N) relay device will be described with respect to the embodiment shown in FIG. 2. First, when the fire signal 5 is transmitted, it is input to the first data selector circuit 20 and also to the OR circuit 22, and the OR circuit 22 produces a logic output, so that the flip-flop 24 is inverted.
The logic level of its output terminal Q is inverted. By inverting this flip-flop 24, each channel data selector 2 of the first data selector circuit 20
The respective output terminals Z ₀ , Z ₁ , _{Z 2} of 0a, 20b, 20c are connected to _the input terminals X ₀ , The state in which telephone signals 1 to 3 are input to the second data selector circuit 26 is maintained. In this state (#N), the relay device is first called upon receiving the calling signal C1. Call signal C
1 is converted into a C1 call code signal (0, 0, 0) by the reception conversion circuit 28, which is applied to the second data selector circuit 26, and sent to each output terminal Z of each channel data selector 26a, 26b, 26c. Connect input terminal Q ₀ . At this time, OR circuit 2
2 generates a logical output upon inputting the fire signal 5, the second data selector circuit 26 extracts the information code signal (1, 0, 0), and the transmission conversion circuit 30 outputs the output terminal of the reception conversion circuit 28. After receiving a code reception pulse from P, the input information code signal (1, 0, 0) is converted into a frequency code ( ₁ , ₂ ,
₀ ) and send them sequentially. Therefore, the receiving equipment side knows that at least one of the priority information signals is being generated. Next, the (#N) relay device is called again with the calling signal C2. The reception conversion circuit 28 converts and outputs the C2 call code signal (1, 0, 0), and therefore the second data selector circuit 26 receives the fire signals 1 to 3 given via the first data selector circuit 20.
The information code signal (0, 0, 0) corresponding to the frequency code signal (0, 0, 0) is extracted and converted by the transmission conversion circuit 30 into a frequency code ( ₀ , ₁ , ₂ ), which is sequentially transmitted. Furthermore, the (#N) relay device is called again with the calling signal C3. The reception conversion circuit 28 converts and outputs the call code signal (0, 1, 0), so the second data selector circuit 26 converts the information corresponding to the fire signals 4 to 6 given via the first data selector circuit 20. The code signal (0, 1, 0) is extracted, converted into a frequency code ( ₀ , ₂ , ₁ ) by the transmission conversion circuit 30, and sequentially transmitted. By decoding this frequency code ( ₀ , ₂ , ₁ ), the receiving equipment side learns that the fire signal 5 is being input to the called (#2) relay device, and the fire line 5 that generates the fire signal 5 is activated. It is determined that an alarm has been issued and the process associated with fire detection is activated. When the relay device (#N) is called again by the calling signal C4, the receiving conversion circuit 28 converts and outputs the calling code signal (1, 1, 0), and therefore the second data selector circuit 26 The information code signal (0, 0, 0) corresponding to the fire telephone signals 1 to 3 given through the data selector circuit 20 is taken out, and the frequency code signal (0, 0, ₀ ) is extracted by the transmitting converter 30.
₁ , ₂ ) are sequentially converted and sent. Upon receiving the information returned from the (#N) relay device using this call signal C4, the receiving equipment sends a call signal C1 to the next (#N+1) relay device and performs the same information retrieval operation. The operation sequence of the (#N) relay device when the above fire signal 5 is input is C1 to C4.
It is shown in FIG. 3 together with the calling code signals (OX, OY, OZ) and the calling code signals (IX, IY, IZ). That is, in FIG. 3, after the (#N-1) relay device has finished calling, the C1 call code signal (0, 0, 0) is received and converted to the (#N) relay device, and information retrieval synchronization is performed. Code reception pulse P1 corresponding to the signal
is generated, the information code signal (1,
0, 0) is taken out, and with the next C2 calling code signal (1, 0, 0) and code reception pulse P2, the K2 information code signal (0, 0, 0) is taken out, and the following C3 calling code signal (0, 0, 0) is taken out. , 1, 0) and the code reception pulse P3, the information code signal of K3 (0, 1,
0) is extracted, and finally the K4 information code signal (0, 0, 0) is extracted with the C4 call code signal (1, 1, 0) and code pulse P4, and (#N)
The operation of the relay device is ended, and the operation moves to the next (#N+1) relay device. Here, in the embodiment of FIG. 2, the calling signals C1 to C
The information code signal (IX,
The meanings of the information signals of each bit code (IY, IZ) can be summarized as shown in Tables 4-1 and 4-2 below. Here, Table 4-1 shows information code signals when information signals other than priority information are extracted by the first data selector circuit 20, and Table 4-2 shows information code signals when the priority information signal is used to switch the first data selector circuit 20. Represents an information code signal when retrieved in operation.

【table】

[Table] The decoding of the information code signals shown in Tables 4-1 and 4-2 is programmed in the receiving equipment, and automatically upon receiving a reply from the relay device in response to the calling signals C1 to C4. It was deciphered by
Processing is performed according to the information signal for which the bit flag is set. As explained in detail above, the relay device of the information collection and monitoring equipment according to the present invention determines the priority information signal in advance according to the type of information signal to be collected,
When none of the predetermined priority information signals is generated, an information signal other than the priority information signal is returned in response to the paging signal, and when at least one priority information signal is generated, only the priority information signal is returned. By realizing the function of the relay device to distinguish and switch by itself, it is possible to significantly increase the amount of information signals to be transmitted compared to the conventional relay device that does not have the priority information signal switching function, and the amount of information signals can be increased. Even if the signal increases, priority switching transmission is used, so the information retrieval speed will not be reduced, and in particular, emergency signal generation can be sent to the receiving installation with the highest priority, so it can be applied to fire alarm equipment, etc. In such a case, prompt disaster prevention measures can be taken.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram showing the overall configuration of a fire alarm system in which the relay device of the present invention is used, and FIG. 2 shows an embodiment of the relay device of the present invention used in the fire alarm system of FIG. circuit block diagram,
FIG. 3 is an explanatory diagram showing the operation sequence in the relay device of FIG. 2 when one of the predetermined fire signals is generated as a priority information signal, together with a call code signal and an information code signal. 1... Receiving equipment, 2... Control processing circuit, 3...
Transmission transmitting/receiving circuit, 4... Input/output circuit, 5... Operation panel, 6... Display panel, 7... External accessory device, 8... Power supply section, 9... Transmission section, 10... Relay device, 11... ...Transmission transmitting and receiving unit, 12...Input/output section, 13...Alarm/disconnection detection circuit, 14...Fire detector, 15...Terminator, 16...T-type transmitter,
17...Smoke prevention and exhaust control device, 18...Release, 2
0...first data selector circuit, 20a, 20
b, 20c...2 channel data selector, 2
2, 23...OR circuit, 24...flip-flop, 26...second data selector circuit, 26
a, 26b, 26c...channel data selector, 28...reception conversion circuit, 30...transmission conversion circuit.

Claims (1)

[Scope of Claims] 1. Provided between a central information processing facility and a plurality of terminal devices, the central information processing device transmits a plurality of pieces of information from the plurality of terminal devices in response to a call signal from the central information processing facility. In a relay device of an information gathering and monitoring facility that returns information to the facility, a plurality of input circuit means that receive information signals from the plurality of terminal devices separately into a predetermined priority information signal and information signals other than the priority information signal; It determines the presence or absence of a priority information signal in each input information signal, and in normal times when no priority information signal exists, only information signals other than the priority information signal are output, and when the presence of a priority information signal is determined, it outputs information signals other than the priority information signal. signal selection means for outputting only a priority information signal instead of the information signal of the central information processing equipment; A relay device for information gathering and monitoring equipment, comprising: a transmission transmitting/receiving unit that sequentially transmits signals to the central information processing equipment according to signals.