JPH0855289A - Terminal equipment of fire alarm facilities - Google Patents

Abstract

PURPOSE:To decrease the number of ports of a microcomputer required for data setting as much as possible by dividing plural switches into a specific number of groups, providing (m) output ports for supplying electric power to the respective groups individually, and connecting an (n)th switch in each group to an (n)th input port. CONSTITUTION:The dip switches S11-S14, and S21-S24 are divided into the groups G1 and G2, and the microcomputer MPU 11 is provided with the two output ports P01 and P02 for supplying the electric power to the groups G1 and G2. Further, the microcomputer MPU 11 is provided with the input ports P1-P4, and the (n)th switches of the groups G1 and G2 are connected to the (n)th input port Pn. Then the microcomputer MPU 11 detects the ON/OFF states of the respective switches according to the relation between the states of power supply of the output ports P01 and P02 and the input signals of the input ports P1-P4, and recognizes the data setting of a terminal equipment on the basis of the detection results.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving unit such as a fire receiver and a terminal device which are wirelessly connected to each other by a signal line, radio waves or infrared rays, and the terminal device sets its own data in its data setting unit. The present invention relates to a terminal device of a fire alarm facility in which a receiving unit and the terminal device send and receive signal transmission such as a coded signal.

[0002]

2. Description of the Related Art Conventionally, in a fire alarm system, an address is set for each terminal device in order to individually call a large number of terminal devices such as a fire detector connected to a fire receiver by a signal line or wirelessly. There is. In this case, the binary number 8
If the address is configured by bits, 256 terminal devices can be connected. Specifically, the address is set by using eight dip switches that can be turned on and off. Thus, when using the DIP switch, the microprocessor recognizes the set address by detecting the on / off state of each switch.

FIG. 4 is a diagram showing an example of a conventional address setting unit in a terminal device of a fire alarm facility.

This conventional example is a microprocessor MPU.
The dip switches S1 to S8 are connected to the eight input ports P1 to P8 of the dip switch S10, respectively.
The opposite ends of the input ports 1 to S8 are grounded, and pull-up resistors are connected to the input ports P1 to P8, respectively.

Any of the dip switches S1 to S8 is turned on, and at the time of reading an address, the L signal is input to the input port connected to the turned on dip switch, and the dip switch is turned off. Since the H signal is input to the input port connected to, the microprocessor MPU10 can recognize the on / off state of the dip switches S1 to S8, and thus recognizes the address set by the dip switches S1 to S8. it can.

[0006]

However, in the above-mentioned conventional example, when setting an 8-bit address, eight input ports of the microprocessor MPU10 are required,
When increasing the number of address settings, there is a problem that the same number of dip switches as the number of binary digits is required, and the number of input ports used increases by the same number as the number of dip switches increases.

Even when a switch for setting data other than the address, for example, data such as sensitivity, type, and timer time is provided for each terminal device, the same problem as described above occurs.

The present invention provides a terminal device for a fire alarm system which can reduce the number of microcomputer ports required for setting data such as addresses when using a DIP switch to set the data. It is intended to be provided.

[0009]

According to the present invention, a data setting section of a terminal device is provided with a plurality of switches, and a microprocessor reads the on / off states of the plurality of switches to determine the data setting state of the terminal device. In a fire alarm facility that recognizes and transmits signals between the receiving unit such as a fire receiver or repeater and the terminal device, divide multiple switches into a predetermined number of groups and supply power individually to each group. M output ports are provided, the nth switch in each group is all connected to the nth input port, and the power supply state by the m output ports is
The on / off state of each switch is detected according to the relationship with the input signal at the input port, and the data setting state of the terminal device is recognized based on the detection result.

[0010]

According to the present invention, a plurality of switches are divided into a predetermined number of groups, m output ports for individually supplying power to each group are provided, and the nth switch in each group is the nth switch. The on / off state of each switch is detected according to the relationship between the state of power supply by m output ports connected to the input port and the input signal at the input port, and the terminal device is detected based on the detection result. Since it recognizes the data setting state of its own address and the like, the number of ports of the microcomputer required for address setting and the like can be reduced as compared with the conventional case.

[0011]

FIG. 1 is a circuit diagram showing an address setting circuit as a data setting unit in a terminal device of a fire alarm system according to an embodiment of the present invention.

The fire alarm system used in this embodiment is
The receiver such as a fire receiver or repeater and the terminal device are connected by a signal line or radio such as radio waves or infrared rays, and a plurality of switches are provided in the address setting part of the terminal device. Is read by the microprocessor to recognize the self-address of the terminal device,
This is a fire alarm facility in which a receiving unit and a terminal device transmit a signal, for example, a coded signal is transmitted and received via a signal line or a radio.

In the embodiment shown in FIG. 1, eight dip switches S11 to S14 and S21 to S24 are divided into two groups G1 and G2. Specifically, the first group G1 includes the first switch. S11 and the second switch S
12, the third switch S13, and the fourth switch S14, and the second group G2 includes the first switch S13.
21, a second switch S22, a third switch S23, and a fourth switch S24.

The microprocessor MPU11 is provided with two output ports PO1 and PO2 for individually supplying power to the groups G1 and G2, and the first output port PO1 constitutes the first group G1. The first output port PO2 is a port to which all one ends of the first to fourth switches S11 to S14 are connected, and the second output port PO2 is
The first to fourth switches S forming the second group G2
It is a port to which all of one end of each of 21 to S24 are connected.

Further, the microprocessor MPU11 is provided with four input ports P1 to P4, and is the n-th (n in this case is 1 to 4) in each of the groups G1 and G2.
One end of each switch) is connected to the nth input port Pn. That is, the first switch S11 of the first group G1 and the first switch S21 of the second group G2 are connected to the first input port P1, and the second switch S1 of the first group G1 is connected. The switch S12 and the second switch S22 of the second group G2 are connected to the second input port P2, and similarly, the third switch S13 and S23 are connected to the third input port P3. Connected, the fourth switches S14 and S24 are connected to the fourth input port P4.

Further, the microprocessor MPU11
Detects the on / off state of each switch according to the relationship between the state of power supply by the two output ports PO1 and PO2 and the input signal at the input ports P1 to P4, and based on the detection result, 4 is an example of an address recognition unit as an example of a data recognition unit that recognizes a self-address as an example of data setting of a terminal device.

Further, the first to fourth input ports P1 to P
4 are connected to pull-up resistors R11 to R14, respectively, and first to fourth switches S11 to S14 forming a first group G1 and a first group forming a second group G2.
-Diodes D11 to 11 as backflow element means for blocking backflow in each of the fourth switches S21 to S24
D14 and D21 to D24 are provided.

Next, the operation of the above embodiment will be described.

In this embodiment, the output port PO
L signals are alternately output to 1 and PO2, and signals are input from the input ports P1 to P4 in synchronization with this. That is, when an L signal is output to the output port PO1, a signal is input from the input ports P1 to P4 in the state set in the first group G1, and an L signal is output to the output port PO2. Then, a signal is input from the input ports P1 to P4 as the state set in the second group G2.

For example, if the decimal number "175" is set in the above-described embodiment, the binary number represents the address "10101111", but the microprocessor MPU11:
This address is read every 4 digits.

That is, first, signals are input from the input ports P1 to P4 with the L signal output to the output port PO1 and the H signal output to the output port PO2. In this case, the switches S11 and S13 are turned off, and the switch S1
Since 2 and 14 are on, the microprocessor MP
U11 inputs “1010” from the input ports P1 to P4. Next, let the output port PO1 output an H signal,
With the L signal output to the output port PO2, signals are input from the input ports P1 to P4. In this case, since all the switches S21 to S24 are off, the microprocessor MPU11 inputs "1111" from the input ports P1 to P4. When these are combined, "10
The address is 101111 ", which is decimal number" 175 ".

In the above embodiment, when setting an address of a binary number of 8 bits, the number of ports of the microprocessor is six. In the conventional example, when setting a binary 8-bit address, the number of ports of the microprocessor was required to be eight as shown in FIG. Can be made.

FIG. 2 is a circuit diagram showing another embodiment of the present invention.

The embodiment shown in FIG. 2 is an example in which the number of switch groups for setting addresses is increased by one as compared with the embodiment shown in FIG.

That is, in the embodiment shown in FIG. 2, the third group G3 includes the first to fourth switches S3.
1 to S34, and a first to fourth switch S3 that forms a third group G3 at the third output port PO3.
One end of each of 1 to S34 is all connected, and the first input port P1 is connected to the first switch S11, S21, S3.
Second input port P2 connected to the other end of each
Is connected to the other end of each of the second switches S12, S22, S32, the third input port P3 is connected to the other end of each of the third switches S13, S23, S33, and The input port P4 of is connected to the other end of each of the fourth switches S14, S24, and S34.

Further, the diodes D31 to D34 as the backflow element means are provided with the first to fourth switches S31 to S34.
Is a means to prevent backflow in each of the.

In the embodiment shown in FIG. 2, L signals are output one by one in the order of the output ports PO1, PO2, PO3, and in synchronization with the output of this L signal, the input ports P1 to P1.
Input the signal from 4. That is, when the L signal is output only to the output port PO1, the signal is input from the input ports P1 to P4 as the setting state in the first group G1, and then the L signal is output only to the output port PO2. Then, a signal is input from the input ports P1 to P4 as a setting state in the second group G2, and
When the L signal is output only to the output port PO3, the signal is input from the input ports P1 to P4 as the setting state in the third group G3.

By constructing as shown in FIG.
A binary 12-bit address can be set and 1
Approximately 4000 addresses can be set in the 0-ary number, and in this case, the number of ports required by the microprocessor is only seven.

FIG. 3 is a circuit diagram showing a modification of the embodiment shown in FIG.

The embodiment shown in FIG. 3 has rotary switches RS1, RS2, R respectively instead of the groups G1, G2, G3 of switches in the embodiment shown in FIG.
This is an example when S3 is used.

The rotary switch is a decimal number "0".
The numbers up to "9" are mechanically converted into a binary number, which has four switches, and these four switches are turned on and off to be expressed by a binary number. That is, each of the rotary switches RS1, RS2, and RS3 represents one digit of a decimal number, that is, the rotary switch RS1 represents a decimal place of 100, the rotary switch RS2 represents a decimal place of ten, and the rotary switch RS3. Represents the ones digit of a decimal number. Further, the rotary switch RS1 includes four switches S1.
1, S12, S13, S14, the rotary switch RS2 has four switches S21, S22, S23,
The rotary switch RS3 has S24 and four switches S31, S32, S33, and S34.

That is, in the embodiment shown in FIG. 3, the first rotary switch RS1 composed of the first to fourth switches S11 to S14 and the first to fourth switches S21 to S24 are used. The configured second rotary switch RS2 and the first to fourth switches S31 to
Third rotary switch RS composed of S34
3 and 3 form a group of a plurality of switches.

Next, the operation of the embodiment shown in FIG. 3 will be described.

In the embodiment shown in FIG. 3, L signals are output one by one in the order of the output ports PO1, PO2, PO3, and in synchronization with the output of this L signal, the input ports P1 to P1.
Input the signal from 4.

Also in this case, if the address "175" in decimal is set, the rotary switch RS1 indicating the digit of decimal 100 is "1" in decimal.
Is set to "0001" if it is represented in binary, only the first, second and third switches S11, S12, S13 are turned on, and the decimal number is set in the rotary switch RS2 indicating the decimal place. "7" is set, and if this is shown in binary, it becomes "0111", and the first switch S21
Only the rotary switch RS3, which is turned on and indicates the ones digit of the decimal number, is set to the decimal number "5". If it is expressed in binary number, it becomes "0101", and the first and third switches S
Only 31, S33 are turned on. Then, the microprocessor MPU12 reads this binary number by 4 bits.

That is, first, with the L signal output to the output port PO1 and the H signal output to the output ports PO2 and PO3, a signal is input from the input ports P1 to P4 as the setting state of the rotary switch RS1. Setting the rotary switch RS2 from the input ports P1 to P4 in a state where the decimal place 100 is read, and then the output port PO2 outputs the L signal and the output ports PO1 and PO3 output the H signal. Input the signal as
Read the decimal tens place and output port P
With the L signal output to O3 and the H signal output to the output ports PO1 and PO2, a signal is input from the input ports P1 to P4 as the setting state of the rotary switch RS3, and the decimal digit is read. . As a result of reading these, the address is recognized as a decimal number "175".

In the embodiment shown in FIG. 3, since the address can be set in the decimal number as it is by using the rotary switch, there is an advantage that the address setting operation is easier than the address setting in the binary number. Further, in the embodiment shown in FIG. 3, when setting a decimal three-digit address, the microprocessor MPU is used.
The number of ports used by 12 is only seven. In the conventional example, eight input ports are required to set a three-digit decimal address in binary. Therefore, the embodiment shown in FIG. 3 can reduce the required number of ports as compared with the related art.

In the above embodiment, the number of groups for dividing a plurality of switches is 2 or 3. However, the number of groups may be 4 or more, and the number of switches belonging to each group is other than 4. It may be set to.

That is, a plurality of switches are divided into a predetermined number of groups, and power is supplied to each of these groups individually.
(M is an integer of 2 or more) output ports are provided, and the n-th (n is an integer of 2 or more) switch in each group is all connected to the n-th input port, and power is supplied by m output ports. Address recognition means for detecting the on / off state of each switch according to the relationship between the supply state and the input signal at the input port and recognizing the self-address of the terminal device based on the detection result. It may be provided.

The microprocessors MPU11, 12
Detects the on / off state of each switch according to the relationship between the state of power supply from the m output ports and the input signal at the input port, and based on the detection result, the self-address of the terminal device, etc. It is an example of an address recognition means as a data recognition means for recognizing a data setting state.

In the embodiments of FIGS. 2 and 3, the switches S11 to S14, S21 to S24, S31 to S3 of the first to third groups G1 to G3.
The case where 4 is used for address setting as data setting has been described, but each switch of each group may be used for different data setting. In this case, for example, the first group G1 is used for address setting, the second group G2 is used for terminal device type (for example, heat as a detector, smoke, flame, gas, odor, etc., and one type as a fire level). Two kinds,
Classification type such as 3 types, type for monitoring as a repeater, type for controlling district sound, type for controlling smoke evacuating equipment, etc.), fire determination level when the third group G3 is a detector (for example, smoke detector) In the two cases, the smoke concentration of 10% / m can be used as a detection level), and in the case of a repeater for controlling smoke-exhausting equipment, it can be used for setting a timer time of control time.

[0042]

According to the present invention, the number of ports required for address setting in the microprocessor can be reduced as compared with the conventional case.

Further, according to the present invention, since the number of ports can be reduced, the microprocessor can be simplified and downsized, and as a result, the circuit portion such as a printed circuit board can be downsized.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an address setting circuit in a terminal device of a fire alarm facility according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing another embodiment of the present invention.

FIG. 3 is a circuit diagram showing a modified example of the embodiment shown in FIG.

FIG. 4 is a diagram showing a conventional address setting unit in a terminal device of a fire alarm facility.

[Explanation of symbols]

MPU11, MPU12 ... Microprocessor, S11-S14, S21-S24, S31-S34 ... Switch, G1 ... First group, G2 ... Second group, P1 ... First input port, P2 ... Second input port , P3 ... Third input port, P4 ... Fourth input port, PO1 ... First output port, PO2 ... Second output port, PO3 ... Third output port, D11-D14, D21-D24, D31 D34 ... Diode, R11, R12, R13, R14 ... Pull-up resistance, RS1 ... 100 rotary switch, RS2 ... 10 rotary switch, RS3 ... 1 rotary switch.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04Q 9/00 Q

Claims (4)

[Claims] 1. A data receiver of a terminal device is provided with a plurality of switches, and a microprocessor reads the on / off state of the plurality of switches to recognize the data setting state of the terminal device and to detect a fire receiver. In the fire alarm equipment in which signals are transmitted between the receiving unit such as the above and the terminal device, the plurality of switches are divided into a predetermined number of groups, and m (m is a power source) for individually supplying power to each of these groups. An output port of 2 or more); an n-th input port to which all the n-th (n is an integer of 2 or more) switches in each group are connected; power supply by the m output ports And the ON / OFF state of each switch according to the relationship between the input signal at the input port and the input signal at the input port, and based on the detection result, the data of the terminal device is detected. Terminal equipment fire alarm system characterized by having a; and recognizing data recognizing means a constant state. 2. The group of switches according to claim 1, wherein the group of switches includes a first group including first to fourth switches and a second group including first to fourth switches. And the m output ports have a first output port to which one end of each of the first to fourth switches forming the first group is all connected, and the second output port. A second output port to which one end of each of the first to fourth switches forming the first group is all connected, and the n input ports form the first group forming the first group. First input port to which the other end of the switch and the other end of the first switch forming the second group are connected, and the other end of the second switch forming the first group Configure the second group A second input port connected to the other end of the second switch, another end of the third switch forming the first group, and a third switch forming the second group. A third input port whose end is connected, the other end of the fourth switch forming the first group, and the other end of the fourth switch forming the second group are connected. Further comprising a fourth input port, further comprising pull-up resistors respectively connected to the first to fourth input ports, the first to fourth switches forming the first group, and A back flow element means for blocking back flow in each of the first to fourth switches forming the second group, and a terminal device of a fire alarm facility. 3. The group of switches according to claim 2, further comprising a third group of first to fourth switches, wherein the m output ports are the third group. Also has a third output port to which one end of each of the first to fourth switches that make up the third group is all connected, and the first input port has the third output port that makes up the third group. The second input port is also connected to the other end of the first switch, the second input port is also connected to the other end of the second switch forming the third group, and the third input port is connected to the third switch. Is also connected to the other end of the third switch forming the third group, the fourth input port is also connected to the other end of the fourth switch forming the third group, and the backflow element means is , The first to the third which constitute the third group Terminal equipment fire alarm system, characterized in that the fourth switch but also has a means for preventing back flow in each. 4. The group according to claim 1, wherein the group formed by the switches is 10
1 in a rotary switch that converts a binary number into a binary number
A terminal device for a fire alarm facility, which corresponds to one digit of a decimal number.