JP7713664B2 - Receiver, automatic fire alarm system, control method, and program - Google Patents

Description

This disclosure generally relates to a receiver, an automatic fire alarm system, a control method, and a program, and more specifically, to a receiver for an automatic fire alarm system, an automatic fire alarm system including the receiver, and a control method and program for the receiver.

The disaster prevention system described in Patent Document 1 includes a sensor that issues a fire alert when it detects a fire, and a receiver that receives the alert from the sensor. When the receiver receives the alert from the sensor, it issues an alert to notify the user of the occurrence of a fire using a display unit provided on the receiver. At that time, the receiver displays the location of the fire, a message, etc. on the display unit.

Japanese Patent Application Publication No. 1-46193

However, the display unit of the receiver in Patent Document 1 displays a lot of information, such as the location of the fire and messages. This causes the characters displayed on the display unit to be small and difficult to read (i.e., poor visibility), which is an issue.

This disclosure has been made in consideration of the above-mentioned reasons, and its purpose is to provide a receiver, an automatic fire alarm system, a control method, and a program that can improve the visibility of the information displayed on the display unit, even if the number of characters in the displayed information increases.

A receiver according to an aspect of the present disclosure includes a receiving unit, a display unit, a control unit, a setting unit, and an operation unit. The receiving unit receives a signal notified from a sensor. The display unit displays display information based on the signal received by the receiving unit. The control unit displays information within a partial range of the display information on the display unit, and changes the partial range within the display information. The setting unit sets the display information to be displayed on the display unit. The operation unit accepts an input operation. The setting unit is capable of setting the display of the display information to a normal display or an enlarged display. The setting of the normal display or the enlarged display is determined by the input operation to the operation unit. The normal display and the enlarged display display the same display information. Changing the partial range includes a change to scroll the enlarged displayed partial range.
A receiver according to an aspect of the present disclosure includes a receiving unit, a display unit, a control unit, a setting unit, and an operation unit. The receiving unit receives a signal notified from a sensor. The display unit displays display information based on the signal received by the receiving unit. The control unit displays information within a partial range of the display information on the display unit, and changes the partial range within the display information. The setting unit sets the display information to be displayed on the display unit. The operation unit accepts an input operation. The setting unit can set the display of the display information to a normal display or an enlarged display. The setting of the normal display or the enlarged display is determined by the input operation to the operation unit. The display information is divided into a plurality of parts. The normal display and the enlarged display display the same display information. Changing the partial range includes displaying the enlarged-displayed display information on the display unit as information within the partial range, one by one, in order.

An automatic fire alarm system according to one embodiment of the present disclosure includes the receiver and the detector.

A control method according to an aspect of the present disclosure includes a reception process, a display process, a control process, a setting process, and an operation process. In the reception process, a signal notified from a sensor is received. In the display process, display information is displayed on a display unit based on the signal received in the reception process. In the control process, information within a partial range of the display information is displayed on the display unit, and the partial range is changed within the display information. In the setting process, the display information to be displayed on the display unit is set. In the operation process, an input operation to an operation unit is accepted. In the setting process, the display of the display information can be set to a normal display or an enlarged display. The setting of the normal display or the enlarged display is determined by the input operation to the operation unit. The normal display and the enlarged display display the same display information. Changing the partial range includes a change to scroll the enlarged displayed partial range.
A control method according to an aspect of the present disclosure includes a reception process, a display process, a control process, a setting process, and an operation process. In the reception process, a signal notified from a sensor is received. In the display process, display information is displayed on a display unit based on the signal received in the reception process. In the control process, information within a partial range of the display information is displayed on the display unit, and the partial range is changed within the display information. In the setting process, the display information displayed on the display unit is set. In the operation process, an input operation to an operation unit is accepted. In the setting process, the display of the display information can be set to a normal display or an enlarged display. The setting of the normal display or the enlarged display is determined by the input operation to the operation unit. The display information is divided into a plurality of parts. The normal display and the enlarged display display the same display information. Changing the partial range includes displaying the enlarged-displayed display information on the display unit as information within the partial range, one by one, in order.

A program according to one aspect of the present disclosure causes a computer system to execute the control method.

According to the present disclosure, it is possible to improve the visibility of the display information displayed on the display unit even if the number of characters in the display information increases.

FIG. 1 is a block diagram showing a schematic configuration of an automatic fire alarm system including a master unit according to an embodiment of the present disclosure. FIG. 2 is a block diagram showing the overall configuration of the automatic fire alarm system. FIG. 3 is a front view showing a schematic configuration of a display unit and an operation unit of the parent unit. FIG. 4 is a front view showing a schematic configuration of a liquid crystal display unit of the display unit of the above. FIG. 5 is an explanatory diagram showing an example of display information displayed on the liquid crystal display unit in normal display mode. FIG. 6 is an explanatory diagram showing an example of special characters displayed in the display area of the liquid crystal display unit of the above embodiment. 7A to 7J are explanatory diagrams showing numbers (0 to 9) displayed in an enlarged manner on the liquid crystal display unit of the same. 8A and 8B are explanatory diagrams illustrating a method for displaying display information on a liquid crystal display unit when the number of characters in the display information does not exceed a threshold number in an enlarged display, and a method for displaying display information on a liquid crystal display unit when the number of characters in the display information exceeds a threshold number in an enlarged display. FIG. 9 is a flowchart illustrating the operation of the parent unit.

(1) Embodiment (1.1) Overview Below, a master unit 1, which is an embodiment of a receiver according to the present disclosure, and an automatic fire alarm system 100 including the master unit 1 will be described with reference to the drawings.

As shown in FIG. 1, the parent unit 1 (receiver) of this embodiment is electrically connected to a pair of electric wires 31, 32 together with the child unit 2 (sensor), and can communicate with the child unit 2 by changing the current flowing through the pair of electric wires 31, 32. As shown in FIG. 2, the parent unit 1 is connected to a plurality of communication lines L1, with the pair of electric wires 31, 32 constituting one communication line L1. In addition, a plurality of child units 2 are connected to each of the plurality of communication lines L1.

As shown in FIG. 1, the parent unit 1 includes a receiving unit 14, a display unit 15, and a control unit 17.

The receiver 14 receives a signal transmitted from the slave unit 2 via the communication line L1. In particular, the receiver 14 receives a fire alert, which is a signal notifying the occurrence of a fire, from the slave unit 2.

The display unit 15 displays fire information (display information) showing information related to the fire based on the fire report received by the receiving unit 14. The fire information is expressed by at least one of letters, numbers, and symbols, and is displayed on the display unit 15 by, for example, letters, numbers, symbols, or a combination thereof. The content of the fire information includes, for example, information indicating the communication line L1 connected to the handset 2 that notified the fire report, or information on the location where the handset 2 that notified the fire report is installed. The information indicating the communication line L1 is, for example, a line number assigned in advance to each communication line L1, or information on the location where each communication line L1 is wired. The information on the location where the handset 2 is installed is, for example, the name of the location registered in advance in association with each handset 2 (the name of the location where the handset 2 is installed, for example, the room number in an apartment building), etc.

The control unit 17 controls the display information (e.g., fire information) displayed on the display unit 15. More specifically, the control unit 17 displays information within a partial range of the display information on the display unit 15, and changes (e.g., scrolls) the partial range within the display information. In other words, rather than displaying the entire display information on the display unit 15 at once, the control unit 17 displays only information within a partial range of the display information on the display unit 15, and changes (e.g., scrolls) the partial range throughout the entire display information. In this way, the control unit 17 displays the display information on the display unit 15, partial range at a time.

In this way, since the parent unit 1 of this embodiment is equipped with a control unit 17, it is possible to display information within a partial range of the display information on the display unit 15 and change (e.g., scroll) the partial range within the display information. Therefore, even if the number of characters in the display information increases, it is not necessary to reduce the size (display size) of the letters, numbers, and symbols (hereinafter also referred to as "characters, etc.") included in the display information, and the visibility of the display information displayed on the display unit 15 can be improved.

(1.2) Overall Configuration In the following, a case where the automatic fire alarm system 100 of the present embodiment is used in an apartment building A1 (e.g., an apartment building) will be illustrated as an example, as shown in Fig. 2. Of course, the automatic fire alarm system 100 of the present embodiment may be used in various buildings, such as detached houses, commercial facilities, hospitals, hotels, and multi-tenant buildings, without being limited to the apartment building A1.

As shown in FIG. 2, the automatic fire alarm system 100 of this embodiment is provided with one parent unit 1 and multiple (here, 16) child units B1 to B16 for one apartment building A1. In addition, in this automatic fire alarm system 100, multiple (here, four) communication lines L1 (L11 to L14) are connected to the parent unit 1. Two or more (here, four) child units 2 are connected to each communication line L1. In detail, child units B1 to B4 are connected to communication line L11, child units B5 to B8 are connected to communication line L12, child units B9 to B12 are connected to communication line L13, and child units B13 to B16 are connected to communication line L14. In addition, at the end of each communication line L1 (the end opposite to the parent unit 1), a pair of electric wires 31 and 32 are electrically connected via a termination resistor C1. Therefore, the parent unit 1 can detect a break in the pair of electric wires 31, 32 by monitoring the current flowing between the pair of electric wires 31, 32. In the following explanation, when there is no need to distinguish between the child units B1 to B16, they will be referred to as "child unit 2."

Here, each of the multiple handset units 2 is either a first handset unit 21 or a second handset unit 22.

When the first handset 21 detects a fire, it shorts the pair of electric wires 31, 32, thereby transmitting a signal (hereinafter referred to as a "fire alarm") notifying the occurrence of a fire to the parent unit 1. That is, the first handset 21 here is a contact-type fire detector used in so-called P-type (proprietary-type) automatic fire alarm systems. When a fire alarm is transmitted from the first handset 21, the parent unit 1 cannot know which handset 2 (first handset 21) has transmitted the fire alarm. Therefore, in this case, the parent unit 1 identifies the source of the alarm on a communication line L1 basis.

When the second handset 22 detects the outbreak of a fire, it transmits a fire alert to the main unit 1 by communication using a transmission signal transmitted through a pair of electric wires 31, 32. Furthermore, after issuing an alert (after transmitting a fire alert), when the second handset 22 receives a transmission signal from the main unit 1 including an address request requesting the address (identifier) of the source of the fire alert, it transmits a pre-assigned address to the main unit 1 using the transmission signal. In other words, when a fire alert is transmitted from the second handset 22, the main unit 1 can identify the source of the alert on a handset 2 (second handset 22) basis by communicating with the second handset 22 that issued the alert.

The automatic fire alarm system 100 is basically configured to detect the occurrence of a fire using a slave unit 2, which is a detector (such as a heat detector, smoke detector, or flame detector), and to notify the occurrence of a fire (fire alarm) from the slave unit 2 to the master unit 1, which is a receiver. However, the slave unit 2 is not limited to a detector that detects the occurrence of a fire, and may also include a transmitter, etc. The transmitter is a device that has a push button switch (not shown) and notifies the master unit 1 of the occurrence of a fire by manually operating (pressing) the push button switch when a person discovers a fire.

The automatic fire alarm system 100 may have a linking function that links with other equipment, such as a smoke control and exhaust system (not shown) and/or an emergency broadcast system (not shown). In this case, the automatic fire alarm system 100 can control the fire doors of the smoke control and exhaust system in the event of a fire, or can notify the emergency broadcast system of the occurrence of a fire by sound or voice.

Generally, there are two types of automatic fire alarm systems: proprietary type (P type) and record type (R type). In a P type automatic fire alarm system, the slave unit notifies the master unit of a fire by electrically shorting a pair of wires. In an R type automatic fire alarm system, the slave unit notifies the master unit of a fire by communicating with the master unit using a transmission signal transmitted along a transmission line.

The automatic fire alarm system 100 of this embodiment is based on the P type. In the automatic fire alarm system 100 of this embodiment, it is assumed that in an apartment building A1 where a P type automatic fire alarm system was installed, the existing wiring (communication line L1) is used as is, and the parent unit 1 and multiple child units 2 (first child unit 21, second child unit 22) are replaced. Here, some of the child units 2 may be the existing child units as is. Of course, the automatic fire alarm system 100 of this embodiment can also be adopted as a newly installed automatic fire alarm system.

The configuration of the parent unit 1 and child unit 2 will be described in detail below. Note that, in the following, one of the multiple child units 2, the first child unit 21, and one of the multiple child units 22 will be described, and a description of the remaining child units 2 will be omitted. In the following, the description will focus on one communication line L1 of the multiple communication lines L1.

(1.3) Configuration of the slave units First, the configuration of the slave units 2 (first slave unit 21 and second slave unit 22) will be described with reference to Fig. 1. Fig. 1 illustrates one each of the first slave unit 21 and the second slave unit 22, which are made up of sensors connected to one communication line L1, and does not illustrate the other slave units 2. Each slave unit 2 is installed in a room, staircase, hallway, etc. of the apartment building A1.

As shown in FIG. 1, the first slave unit 21 includes a (first) diode bridge 211, a (first) power supply unit 212, a (first) sensor 213, a thyristor 214, and a drive unit 215.

The diode bridge 211 has an input terminal electrically connected to a pair of electric wires 31, 32, and an output terminal electrically connected to a power supply unit 212 and a thyristor 214. The power supply unit 212 generates power for operating the first handset 21 by receiving power from the pair of electric wires 31, 32. The sensor 213 detects the occurrence of a fire by detecting, for example, a change in smoke concentration, a change in temperature, or a change in gas concentration such as carbon monoxide. The drive unit 215 shorts the pair of electric wires 31, 32 by turning on the thyristor 214 according to the output of the sensor 213.

With this configuration, when the first slave unit 21 detects the occurrence of a fire, it turns on the thyristor 214 to electrically short-circuit the pair of electric wires 31, 32, thereby notifying the master unit 1 of a fire alert.

As shown in FIG. 1, the second handset 22 includes a (second) diode bridge 221, a (second) power supply unit 222, a (second) sensor 223, a transmitter 224, a receiver 225, a controller 226, and a memory unit 227.

The diode bridge 221 has an input end electrically connected to a pair of electric wires 31, 32, and an output end electrically connected to a power supply unit 222, a transmitter 224, and a receiver 225. The power supply unit 222 generates power for operating the second slave unit 22 by receiving power from the pair of electric wires 31, 32. The sensor 223 detects the occurrence of a fire by detecting, for example, a change in smoke concentration, a change in temperature, or a change in gas concentration such as carbon monoxide. The control unit 226 controls the transmitter 224 and receiver 225 to transmit a fire alert and a transmission signal from the transmitter 224 to the master unit 1 and to receive a transmission signal from the master unit 1 at the receiver 225 according to the output of the sensor 223.

The transmitter 224 transmits a signal to the parent unit 1 by changing the current flowing through the pair of electric wires 31, 32. In other words, the transmitter 224 transmits a current signal to the parent unit 1 by drawing in and changing the current from the pair of electric wires 31, 32.

The receiver 225 receives the transmission signal from the parent unit 1 as a voltage signal (voltage change) on the pair of electric wires 31, 32. In other words, the current value of the current drawn by the parent unit 1 from the pair of electric wires 31, 32 corresponds to the magnitude of the voltage drop across resistor 12. Therefore, the receiver 225 receives the signal represented by the current value of the current drawn by the parent unit 1 as a voltage signal.

The memory unit 227 stores an address (identifier) that is assigned in advance to the second handset 22. A unique address is assigned to each of the multiple second handset units 22. Each address is associated with the installation location (e.g., room number) of each of the multiple second handset units 22 and stored in the memory unit 170 of the parent unit 1.

(1.4) Configuration of the Master Unit The master unit 1 in this embodiment has a function as a P-type receiver that receives a notification of a fire outbreak (fire alert) from the slave unit 2. The master unit 1 is installed, for example, in a management room of a building (apartment building A1).

As shown in FIG. 1, the parent unit 1 includes a receiving unit 14, a display unit 15, and a control unit 17, as well as an application unit 11, a resistor 12, a transmitting unit 13, an operation unit 16, a memory unit 170, a backup power supply 18, and a communication interface (referred to as "communication I/F" in FIG. 1) 19.

The application unit 11 is controlled by the control unit 17 to apply a predetermined voltage to the pair of electric wires 31, 32. As an example, the voltage applied by the application unit 11 between the pair of electric wires 31, 32 is 24 V DC, but this is not intended to be limiting.

The resistor 12 is connected between the application unit 11 and at least one of the pair of electric wires 31, 32. In the example of FIG. 1, the resistor 12 is inserted between one (high potential side) electric wire 31 of the pair of electric wires 31, 32 and the application unit 11. However, this is not the only example, and the resistor 12 may be inserted between the other (low potential side) electric wire 32 and the application unit 11, or between both of the pair of electric wires 31, 32 and the application unit 11.

The resistor 12 has two functions: a first function of converting the current flowing through the resistor 12 into a potential difference (voltage) between both ends of the resistor 12 by a voltage drop, and a second function of limiting the current flowing through the pair of electric wires 31, 32 when the pair of electric wires 31, 32 are shorted. In short, the resistor 12 has both a first function as a current-voltage conversion element and a second function as a current limiting element. Here, as an example, the resistance value of the resistor 12 is set to 470 Ω, but this is not intended to be limited to this value.

The transmitter 13 is electrically connected between the pair of electric wires 31, 32. The transmitter 13 transmits a transmission signal to the second handset 22 by changing the current flowing from the pair of electric wires 31, 32. In other words, the transmitter 13 transmits a transmission signal to the second handset 22 by changing the current flowing through the pair of electric wires 31, 32 by drawing in the current flowing from the application unit 11 to the resistor 12.

The receiving unit 14 is electrically connected between the pair of electric wires 31, 32. The receiving unit 14 distinguishes between a state in which the pair of electric wires 31, 32 is short-circuited by the first handset 21 and a state in which the pair of electric wires 31, 32 is not short-circuited. The receiving unit 14 thereby receives a fire alert transmitted by the first handset 21 shorting the pair of electric wires 31, 32.

The receiver 14 also receives the signal transmitted from the second handset 22 as a voltage change between the pair of electric wires 31, 32 by drawing current from the pair of electric wires 31, 32. In other words, the current value of the current drawn by the second handset 22 from the pair of electric wires 31, 32 corresponds to the magnitude of the voltage drop across the resistor 12. Therefore, the receiver 14 receives, as a transmission signal, the voltage change (voltage signal) that occurs on the pair of electric wires 31, 32 when the second handset 22 changes the current drawn from the pair of electric wires 31, 32. The receiver 14 also receives the address that the second handset 22 transmits in response to the address request. This allows the master unit 1 to know which second handset 22 has notified the fire alarm.

The display unit 15 is provided, for example, on the front of the housing of the parent unit 1. The display unit 15 displays various information. As shown in FIG. 3, the display unit 15 includes a plurality of indicator lights 151 and a liquid crystal display unit 152.

Each of the multiple indicator lights 151 is equipped with, for example, an LED (Light Emitting Diode). The control unit 17 controls the lighting, extinguishing, blinking, etc. of each of the multiple indicator lights 151. Some of the multiple indicator lights 151 (in the example of FIG. 3, the 20 indicator lights 151 on the left side) are respectively associated with multiple communication lines L1. Each of these indicator lights 151 associated with the communication line L1 is equipped with, for example, a red LED, and when it is lit, it indicates that a fire alarm has been notified through the corresponding communication line L1, and when it is blinking, it indicates that a disconnection has occurred in the corresponding communication line L1. In addition, some of the other indicator lights 151 respectively indicate the state of the parent unit 1. These indicator lights 151 include, for example, a transmitter light equipped with a red LED, an AC power light equipped with a green LED, and a trouble light equipped with a red LED. The transmitter light blinks to indicate that the push button of the transmitter connected to any of the communication lines L1 has been pressed. The AC power light is lit to indicate that the parent unit 1 is powered on. The trouble light flashes to indicate that there is an abnormality in the parent unit 1 or one of the communication lines L1.

The liquid crystal display unit 152 displays various information (display information) under the control of the control unit 17. The liquid crystal display unit 152 displays information using at least one of letters, numbers, and symbols. As shown in FIG. 4, the liquid crystal display unit 152 of this embodiment has multiple display areas 1520, and is basically configured to display one letter, number, or symbol using one display area 1520, for example, to display a sentence including multiple letters. The liquid crystal display unit 152 displays information (display information) indicating the contents of the fire report received from the slave unit 2. The liquid crystal display unit 152 displays, as fire information, information indicating, for example, that a fire has occurred, the floor on which the fire has occurred, or the location where the fire has occurred. The liquid crystal display unit 152 also displays information (including confirmation messages, etc.) when performing various settings of the automatic fire alarm system 100. The specific configuration of the liquid crystal display unit 152 will be described in section (1.5).

The operation unit 16 accepts input operations when performing various settings of the automatic fire alarm system 100. The operation unit 16 is equipped with a plurality of push buttons 161. The plurality of push buttons 161 includes a selection switch button for switching the display content displayed on the liquid crystal display unit 152, and an execution switch button for executing the display content displayed on the liquid crystal display unit 152. The plurality of push buttons 161 further includes an input switch button for displaying letters, numbers, symbols, etc. on the liquid crystal display unit 152.

Here, the communication interface 19 is a card slot into which a recording medium such as a memory card can be inserted. The communication interface 19 transmits information stored in the inserted card slot to the control unit 17 in response to, for example, an input operation to the operation unit 16. Note that the communication interface 19 may also be a connector to which a communication line from an external device is connected.

The backup power supply 18 is equipped with a storage battery. Here, the parent unit 1 uses a commercial power supply, a private power generating facility, etc. as its main power supply. The application unit 11 automatically switches the power supply source from the main power supply to the backup power supply 18 when the main power supply is interrupted, and automatically switches from the backup power supply 18 to the main power supply when the main power supply is restored. In this way, by providing the backup power supply 18, it is possible to ensure a power supply for the operation of the automatic fire alarm system 100 even in the event of a power outage.

The control unit 17 controls the transmission unit 13 and the reception unit 14 to transmit a signal from the transmission unit 13 and to receive a signal from the handset 2 at the reception unit 14. The control unit 17 also controls the on/off of the indicator light 151 of the display unit 15 and controls the display content displayed on the liquid crystal display unit 152. The control unit 17 mainly comprises, for example, a computer having a CPU (Central Processing Unit) and memory, and realizes various functions by executing a program stored in the memory with the CPU. The program may be recorded in the computer's memory in advance, may be provided by recording it on a recording medium such as a memory card, or may be provided via a telecommunications line such as the Internet.

When the receiver 14 receives a fire alert via any of the communication lines L1, the control unit 17 turns on the indicator light 151 based on the fire alert, and also displays fire information indicating information related to the fire on the liquid crystal display unit 152. In one example, the content of the fire information includes information (communication line information) indicating the communication line L1 connected to the handset 2 that notified the fire alert. For example, when the control unit 17 receives a fire alert from the first handset 21, the control unit 17 displays the communication line information of the communication line L1 that received the fire alert on the liquid crystal display unit 152. In another example, the content of the fire information includes information (installation location information) of the location where the handset 2 that notified the fire alert is installed. For example, when the control unit 17 receives a fire alert from the second handset 22, the control unit 17 displays the installation location information of the second handset 22 that received the fire alert on the liquid crystal display unit 152 based on the address transmitted from the second handset 22. In addition, the content of the fire information may include a message in addition to the above communication line information or installation location information. The contents of these fire information items (the contents displayed on the LCD display unit 152) are stored in the memory unit 170. The control unit 17 reads out information from the memory unit 170 based on which communication line L1 and/or slave unit 2 sent the fire alert, and displays the read out information on the LCD display unit 152.

For example, in the case where the communication line L11 is wired to the first floor of the apartment building A1, when the receiver 14 receives a fire report via the communication line L11, the control unit 17 causes the liquid crystal display unit 152 to display fire information including information informing the user of the 1st floor, which is the location of the fire (i.e., the location of the communication line L11). In this case, for example, fire information such as "1F KASAI HASSEI" is displayed on the liquid crystal display unit 152.

For example, if handset B1 is the second handset 22 and is installed in room 1021 of apartment building A1, when the receiver 14 receives a fire alert from handset B1, the control unit 17 causes the liquid crystal display 152 to display fire information including information informing the user of room 1021, which is the location of the fire (i.e., the location of handset 22). In this case, for example, fire information such as "1021 Kasai Hassei" is displayed on the liquid crystal display 152.

The control unit 17 in this embodiment includes a setting unit 171 for setting the contents of the fire information to be displayed on the liquid crystal display unit 152 when a fire alert is received from the communication line L1 or the slave unit 2 (the contents of the fire information to be stored in the memory unit 170).

The setting unit 171 sets the display information (fire information) to be displayed on the LCD display unit 152 when a fire alert is received by the receiving unit 14. In particular, the setting unit 171 sets (changes or registers) the fire information to be displayed on the LCD display unit 152 when a fire alert is received by the receiving unit 14 in response to an input operation by the operator to the operation unit 16. In the parent unit 1 of this embodiment, the setting unit 171 is capable of setting fire information for each communication line L1 and for each child unit 2 (for each second child unit 22).

For example, the storage unit 170 stores a message such as "L001-01 Kasai Hassei" as the default fire information (hereinafter referred to as "first fire information") to be displayed on the liquid crystal display unit 152 when a fire report is received from the slave unit B1 of the communication line L11. Here, "L001" in the message indicates the line number of the communication line L11, and "-01" indicates the address of the slave unit B1. The control unit 17 receives information regarding the changed content of the first fire information via the operation unit 16. The changed content of the first fire information is the content input by the user himself by operating the operation unit 16 (operating the input switch button for displaying letters, numbers, symbols, etc.), for example, a message such as "1021 Kasai Hassei". Then, when the changed content of the first fire information is confirmed by operating the operation unit 16, the setting unit 171 stores the changed content of the first fire information in the storage unit 170 in association with the slave unit B1. As a result, when the receiver 14 receives a fire report from the slave B1 after changing the first fire information, the control unit 17 causes the LCD display 152 to display the changed first fire information message "No. 1021 Fire Alarm." The content of the fire information corresponding to the other slaves B2 to B16 and the content of the fire information corresponding to the communication lines L11 to L14 can also be changed in a similar manner.

Furthermore, the setting unit 171 is configured to be able to set (change or register) the display mode of the display information (e.g., fire information) displayed on the liquid crystal display unit 152. Here, the display mode includes the size (display size) of characters, etc., the type of color or font, etc. In particular, the setting unit 171 is configured to be able to set the size of characters, etc. indicating the display information displayed on the liquid crystal display unit 152 as the display mode to normal display or enlarged display. Whether to set the size of characters, etc. indicating the display information to normal display or enlarged display can be determined by input operation to the operation unit 16. Note that normal display is a display mode in which characters, etc. indicating the display information are displayed in a normal size (e.g., a size of 1x square, which will be described later). Enlarged display is a display mode in which characters, etc. indicating the display information are displayed in a size larger than the normal display (e.g., 4x size). In normal display, the display information is displayed on the liquid crystal display unit 152 at one time. For this reason, the number of characters of the display information is limited to or less than the maximum number of characters that can be displayed on the liquid crystal display unit 152 at one time in normal display (threshold number for normal display). However. In enlarged display, the display information is scrolled, so the number of characters in the display information can be set to exceed the maximum number of characters that can be displayed at one time on the LCD display unit 152 in enlarged display (threshold number for enlarged display).

For example, the setting unit 171 is configured to set (change or register) the size of letters, numbers, and symbols by accepting input of a specific symbol (e.g., - (hyphen)) via the operation unit 16. For example, if a specific symbol (- (hyphen)) is included at the beginning of the first fire information (message content) stored in the memory unit 170, the control unit 17 displays the content of the first fire information other than the specific symbol in letters, numbers, and symbols larger than the normal display. For example, the control unit 17 displays the first fire information on the liquid crystal display unit 152 in characters four times larger than the normal display. On the other hand, if the first fire information (message content) stored in the memory unit 170 does not include the specific symbol at the beginning, the control unit 17 displays the content of the first fire information on the liquid crystal display unit 152 in the normal display.

In this way, the control unit 17 is configured with a plurality of display modes (e.g., normal display and enlarged display) that can be selected by input operations to the operation unit 16. The enlarged display is an example of a display mode in which the size of characters, etc. (display size) of information within the above-mentioned partial range of the display information is displayed on the liquid crystal display unit 152 in a changeable manner. The control unit 17 can then display the information within the above-mentioned partial range on the liquid crystal display unit 152 in a display mode (e.g., enlarged display) selected from the above-mentioned plurality of display modes by input operations to the operation unit 16 (i.e., by the user).

When the display mode of the display information is set to normal display, the control unit 17 displays the entire display information at normal size on the liquid crystal display unit 152 at one time. When the display mode of the display information is set to enlarged display, the control unit 17 displays the display information in enlarged display on the liquid crystal display unit 152 at one time if the number of characters of the display information does not exceed the threshold number for enlarged display. The threshold number for enlarged display is the maximum number of characters that can be displayed at one time in enlarged display on the liquid crystal display unit 152.

In addition, when the display mode of the display information is set to enlarged display, if the number of characters of the display information exceeds the threshold number for enlarged display, the control unit 17 displays information within a partial range of the display information on the liquid crystal display unit 152 when displaying the display information on the liquid crystal display unit 152, and changes the partial range within the display information. Here, the above-mentioned "partial range of the display information" is a display range that displays a part of the display information, and is a range of the display information that can be displayed at one time on the liquid crystal display unit 152 when the display information is displayed in enlarged display. In addition, the above-mentioned "changing the partial range within the display information" means, for example, scrolling the partial range from the leading end of the enlarged display information to the trailing end. In other words, the control unit 17 scrolls the partial range from the leading end of the display information to the trailing end while displaying information within the partial range of the enlarged display information on the liquid crystal display unit 152 (for example, the entire display screen). As a result, the enlarged display information is scrolled from the leading end to the trailing end by a partial range and displayed on the liquid crystal display unit 152. In this way, when the number of characters in the display information exceeds the threshold number for enlarged display, the control unit 17 automatically changes (e.g., scrolls) the above-mentioned partial range within the display information, thereby scrolling the entire display information to display it on the liquid crystal display unit 152. Note that the above-mentioned "when the number of characters in the display information exceeds the threshold number for enlarged display" is an example of a case where a predetermined condition is satisfied.

In this way, information within a partial range of the display information is displayed on the liquid crystal display unit 152, and the partial range is changed (e.g., scrolled) within the display information. Therefore, even if the number of characters in the display information increases, the display size of the display information does not need to be reduced, and the visibility of the display information displayed on the liquid crystal display unit 152 can be improved. At this time, the display information is displayed in an enlarged view, so the visibility of the display information can be further improved.

(1.5) Specific Examples of Display Modes Next, specific examples of display modes will be described with reference to FIGS. 4 to 7B.

The liquid crystal display unit 152 of the display unit 15 of this embodiment has a plurality of display areas 1520 arranged vertically and horizontally. As shown in FIG. 4, the liquid crystal display unit 152 here has a total of 32 display areas 1520, 16 horizontally and 2 vertically. Here, the 32 display areas 1520 constitute the display screen of the liquid crystal display unit 152. Each display area 1520 is a matrix display, and has a total of 35 small areas, 5 horizontally and 7 vertically. Each small area has, for example, a backlight (one backlight may be used for multiple small areas), first and second polarizing plates whose polarization directions are orthogonal to each other, and a liquid crystal layer disposed between the first and second polarizing plates. Each small area can be switched between a light-on state in which light from the backlight is transmitted and a light-off state in which light is not transmitted by switching between a state in which a voltage is applied to the liquid crystal layer and a state in which a voltage is not applied.

The control unit 17 displays characters and the like on the display screen of the liquid crystal display unit 152 by turning each small area on or off and color-coding it.

In normal display, as shown in FIG. 5, the control unit 17 displays the display information on the liquid crystal display unit 152 by displaying one character or the like in one display area 1520 on the display screen of the liquid crystal display unit 152. This display mode in which one character or the like is displayed in one display area 1520 is called single-width display. The example in FIG. 5 shows an example of the case where the display information "No. 1409, Kasai Hatsuei Kakuningo, Onkyo Teishi" is displayed in normal display (i.e., single-width display).

On the other hand, in an enlarged display (when displaying larger than normal display), the control unit 17 uses two or more of the multiple display areas 1520, in this case four display areas 1520, to display one character or the like. This display mode in which one character or the like is displayed using four display areas 1520 is called a quadruple-size display.

For example, the storage unit 170 stores dedicated symbols for enlarged display (hereinafter referred to as "external characters") E1 to E8 (see FIG. 6). For example, the external character E1 is a symbol that is displayed with the two leftmost rows (total of 14) of the 35 small regions in the display area 1520 turned off and the remaining small regions turned on. The external character E2 is a symbol that is displayed with the four upper left and four lower left (total of 8) of the 35 small regions in the display area 1520 turned off and the remaining small regions turned on. Although not shown in the figure, a display with all 35 small regions turned on is also stored as the external character E0. In the parent unit 1 of this embodiment, the external characters E0 to E8 are appropriately displayed in a total of four display regions 1520, two horizontally and two vertically, to perform the enlarged display.

For example, when enlarging the number 0, the external characters E6, E1, E7, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7A). When enlarging the number 1, the external characters E0, E1, E0, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7B). When enlarging the number 2, the external characters E4, E1, E7, and E3 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7C). Similarly, when enlarging the number 4, the external characters E7, E1, E0, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7D). In addition, when enlarging the number 5, the external characters E4, E7, E8, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7F). When enlarging the number 6, the external characters E4, E2, E7, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7G). When enlarging the number 7, the external characters E6, E1, E0, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7H). When enlarging the number 8, the external characters E5, E1, E7, and E1 are displayed in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (see FIG. 7I). To enlarge the number 9, you can display the external characters E5, E1, E8, and E1 in the four display areas 1520 at the top left, top right, bottom left, and bottom right, respectively (Figure 7J).

Thus, the liquid crystal display unit 152 has a total of 32 display areas 1520, 16 horizontally and 2 vertically. For this reason, the liquid crystal display unit 152 can display a maximum of 32 characters, etc. at one time in normal display, and a maximum of 8 characters, etc. at one time in enlarged display. In this embodiment, as an example, the number of characters of the displayed information is limited to 32 in normal display. In this case, the threshold number for the normal display is 32, the threshold number for the enlarged display is 8, and the fixed range is a range of 8 characters in enlarged display. In enlarged display, the number of characters of the displayed information is not particularly limited.

In this embodiment, when the number of characters in the display information (e.g., "No. 1409") does not exceed the threshold number for enlarged display (e.g., 8 characters), the control unit 17 displays the display information on the liquid crystal display unit 152 at once, as shown in FIG. 8A. When the number of characters in the display information (e.g., "No. 1409 Kasai Hatsusei Kakuningo Onkyo Teishi") exceeds 8 characters, as shown in FIG. 8B, the control unit 17 displays information on a partial range (a range of 8 characters) R1 of the display information on the liquid crystal display unit 152, and changes (e.g., scrolls) the partial range R1 within the display information. As a result, the control unit 17 scrolls the display information from the first 8 characters to the last 8 characters, one character at a time, and displays it on the liquid crystal display unit 152.

(1.6) Description of Operation Next, the operation of the base unit 1 (more specifically, the operation of the control unit 17 when displaying display information on the liquid crystal display unit 152) will be described with reference to FIG.

When the control unit 17 receives a fire alert via the receiving unit 14 (S1), it determines whether the display mode of the display information is set to normal display or enlarged display based on the setting of the setting unit 171 (S2). If the result of this determination is that the display mode of the display information is set to normal display (S2: normal display), the control unit 17 displays the display information in normal display on the liquid crystal display unit 152 (S3). In this case, if the display information is, for example, "No. 1409 Fire Prevention Confirmation Onkyo Teishi," the display information is displayed in normal display on the liquid crystal display unit 152 as shown in FIG. 5. Then, the process ends.

On the other hand, if the result of the judgment in step S2 is that the display mode of the display information is set to enlarged display (S2: enlarged display), the control unit 17 judges whether or not the number of characters of the display information exceeds the threshold number for enlarged display (S4). If the result of this judgment is that the number of characters of the display information does not exceed the above-mentioned threshold number (S4: NO), the control unit 17 displays the display information in enlarged display all at once on the liquid crystal display unit 152. In this case, if the display information is, for example, "No. 1409", the display information is displayed in enlarged display all at once on the liquid crystal display unit 152, as shown in FIG. 8A. Then, the process ends.

On the other hand, if the result of the judgment in step S4 is that the number of characters in the display information exceeds the threshold number (S4: YES), the control unit 17 displays the information in the partial range R1 of the display information in an enlarged display on the liquid crystal display unit 152, and changes the partial range R1 within the display information (for example, scrolling one character at a time from the first 8 characters of the display information to the last 8 characters). As a result, the display information is scrolled in an enlarged display and displayed on the liquid crystal display unit 152. In this case, if the display information is, for example, "1409 No. Kasaibatsusei Kakuningo Onkyo Teishi," the first 8 characters of the display information ("1409 No. Kasa") are first displayed in an enlarged display on the liquid crystal display unit 152, and then the display information is scrolled one character at a time from the first side to the last side of the display information in an enlarged display until the last 8 characters of "Onkyo Teishi" are displayed (see FIG. 8B). Then, the process ends.

(1.7) Main Effects The parent unit 1 (receiver) according to this embodiment includes a receiving unit 14, a display unit 15, and a control unit 17. The receiving unit 14 receives a signal notified from the sensor 2. The display unit 15 displays display information based on the signal received by the receiving unit 14. The control unit 17 displays information within a partial range R1 in the display information on the display unit 15 (more specifically, the liquid crystal display unit 152) and changes the partial range R1 within the display information. According to this configuration, information within a partial range R1 in the display information is displayed on the display unit 15 and the partial range R1 is changed within the display information, so that even if the number of characters in the display information increases, the display information can be displayed on the display unit 15 without being made smaller. As a result, even if the number of characters in the display information increases, the visibility of the display information displayed on the display unit 15 can be improved.

(2) Modifications The above embodiment is merely one of various embodiments of the present disclosure. The above embodiment can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. In addition, a function similar to that of the control unit 17 of the parent unit 1 may be embodied as a control method, a computer program, or a non-transitory recording medium on which a computer program is recorded.

The control method according to one embodiment includes a reception process, a display process, and a control process. In the reception process, a signal notified from the sensor 2 is received. In the display process, display information is displayed on the display unit 15 (more specifically, the liquid crystal display unit 152) based on the signal received in the reception process. In the control process, information within a partial range R1 of the display information is displayed on the display unit 15, and the partial range R1 is changed within the display information.

In one embodiment, the program causes a computer system to execute the above-mentioned control method.

(Variation 1)
In the above embodiment, in the normal display, the number of characters of the display information is limited within the threshold number for normal display (i.e., the maximum number of characters that can be displayed on the liquid crystal display unit 152 in the normal display, for example, 32 characters), but the number of characters of the display information may exceed the above threshold number in the normal display. In this case, when the display information is set to the normal display, the control unit 17 judges whether the number of characters of the display information exceeds the above threshold number. If the result of this judgment is that the number of characters of the display information exceeds the above threshold number, the control unit 17 displays information within a partial range of the display information on the liquid crystal display unit 152 in the normal display, and changes (for example, scrolls) the partial range within the display information. The above partial range is, for example, the maximum number of characters that can be displayed on the liquid crystal display unit 152 in the normal display. In addition, the above partial range is moved (for example, scrolled) one character at a time from the front side to the rear side of the display information. As a result, the entire display information is displayed on the liquid crystal display unit 152 by scrolling. Note that, if the result of the above judgment is that the number of characters of the display information does not exceed the above threshold number, the control unit 17 displays the display information on the liquid crystal display unit 152 in the normal display at one time.

According to this modified example, even if the number of characters in the display information increases in normal display, the display information can be displayed on the display unit 15 without being reduced in size. As a result, even if the number of characters in the display information increases in normal display, the visibility of the display information displayed on the display unit 15 can be improved.

(Variation 2)
In the above embodiment, a case is exemplified where a partial range R1 of the display information is scrolled within the display information in the enlarged display. However, the display information may be divided into a plurality of parts, and the control unit 17 may display the plurality of parts one by one in order as information within the partial range R1 on the liquid crystal display unit 152. For example, when the display information is "No. 1409, Kasai Hatsu Sei, Kakuningo, Onkyo Teishi", the display information is divided into four parts, "No. 1409", "Kasai Hatsu Sei", "Kakuningo", and "Onkyo Teishi". Then, these four sections are displayed one by one in order from the first to the fourth on the liquid crystal display unit 152. In this way, the plurality of parts of the facial expression information are displayed one by one in order on the liquid crystal display unit 152.

Note that variant 2 is applied when enlarging the display, but it may also be applied when displaying normally, as in variant 1.

Even with this modified example, even if the number of characters in the display information increases, the display information can be displayed on the display unit 15 without being made smaller. As a result, even if the number of characters in the display information increases, the visibility of the display information displayed on the display unit 15 can be improved.

(Variation 3)
In the above embodiment, the communication I/F 19 may be a communication unit that communicates with an external device using a wired or wireless communication network (e.g., a public line network). In this case, the control unit 17 is controlled based on a signal from the external device received via the communication I/F 19. More specifically, the control unit 17 displays information received from the external device as display information on the display unit 15 (indicator light 151 or liquid crystal display unit 152), or changes the settings of the setting unit 171 based on control received from the external device. This makes it possible to control the master unit 1 based on information from the outside.

(Variation 4)
In the above embodiment, when the display information is displayed in an enlarged manner on the display unit 15, if the number of characters in the display information always exceeds the threshold number for enlarged display, the control unit 17 automatically changes the partial range R1 within the display information whenever the display information is enlarged and displayed on the display unit 15. In this case, the above-mentioned "when the display information is enlarged and displayed on the display unit 15" is an example of a case where a predetermined condition is satisfied.

(Other Modifications)
In the automatic fire alarm system 100 of the present disclosure, the control unit 17 of the parent unit 1 includes a computer system. The computer system is mainly composed of a processor and a memory as hardware. The processor executes a program recorded in the memory of the computer system to realize the function of the control unit 17 of the parent unit 1 of the present disclosure. The program may be pre-recorded in the memory of the computer system, may be provided through an electric communication line, or may be recorded and provided in a non-transitory recording medium such as a memory card, an optical disk, or a hard disk drive that can be read by the computer system. The processor of the computer system is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integrated circuit (LSI). The integrated circuits such as IC or LSI here are called by different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, a field-programmable gate array (FPGA) that is programmed after the manufacture of an LSI, or a logic device that allows reconfiguration of the connection relationship within the LSI or reconfiguration of the circuit partition within the LSI, can also be adopted as a processor. The electronic circuits may be integrated into one chip, or may be distributed among multiple chips. The chips may be integrated into one device, or may be distributed among multiple devices. The computer system referred to here includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including a semiconductor integrated circuit or a large-scale integrated circuit.

In addition, it is not essential for the control unit 17 of the parent unit 1 that the multiple functions are concentrated in one housing. In other words, the components of the control unit 17 may be distributed across multiple housings. Furthermore, at least some of the functions of the control unit 17 may be realized by the cloud (cloud computing) or the like.

The display unit 15 is not limited to the liquid crystal display unit 152 using a matrix display as shown in FIG. 4. For example, the display unit 15 may have a seven-segment display instead of the display area 1520 of the liquid crystal display unit 152.

The setting unit 171 may be capable of setting the color of the letters, numbers, and symbols indicating the fire information displayed on the display unit 15 (LCD unit 152).

In addition, the automatic fire alarm system 100 in the above embodiment is illustrated as being applied to a P-type automatic fire alarm system, but may also be applied to an R-type automatic fire alarm system.

(3) Modes As is apparent from the embodiment and modifications described above, the following modes are possible.

The receiver (1) of the first aspect includes a receiving unit (14), a display unit (15), and a control unit (17). The receiving unit (14) receives a signal notified from the sensor (2). The display unit (15) displays display information based on the signal received by the receiving unit (14). The control unit (17) displays information within a partial range (R1) of the display information on the display unit (15) and changes the partial range (R1) within the display information.

According to this configuration, information within a partial range (R1) of the display information is displayed on the display unit (15), and the partial range (R1) is changed within the display information, so that even if the number of characters in the display information increases, the display information can be displayed on the display unit (15) without being made smaller. As a result, even if the number of characters in the display information increases, the visibility of the display information displayed on the display unit (15) can be improved.

In the receiver (1) of the second aspect, in the first aspect, the display information is information consisting of at least one of letters, numbers, and symbols.

This configuration can be applied to display information consisting of at least one of letters, numbers, and symbols.

In the receiver (1) of the third aspect, in the first or second aspect, the control unit (17) changes a partial range (R1) of the display information when a predetermined condition is satisfied.

With this configuration, when a certain condition is met, a partial range (R1) can be automatically changed within the display information.

In the receiver (1) of the fourth aspect, in the third aspect, the control unit (17) automatically changes a partial range (R1) of the display information when the number of characters in the display information exceeds a threshold number.

With this configuration, if the number of characters in the display information exceeds a threshold number, a partial range (R1) can be automatically changed within the display information.

In the fifth embodiment of the receiver (1), in the third or fourth embodiment, the control unit (17) changes a partial range (R1) within the display information when enlarging the display information and displaying it on the display unit (15).

With this configuration, when the display information is enlarged and displayed on the display unit (15), a partial range (R1) can be changed within the display information.

In the sixth embodiment of the receiver (1), in any one of the first to fifth embodiments, the control unit (17) displays information within a partial range (R1) on the display unit (15) in a display mode selected by the user from among multiple display modes.

With this configuration, information within a partial range (R1) can be displayed on the display unit (15) in a display form selected by the user from among multiple display forms.

In the seventh embodiment of the receiver (1), in the sixth embodiment, the multiple display modes include a display mode in which the display size of information within a partial range (R1) is changeable on the display unit (15).

With this configuration, the operator can select from a plurality of display modes a display mode for displaying information within a partial range (R1) on the display unit (15) in a changeable display size.

In the receiver (1) of the eighth aspect, in the first to seventh aspects, the control unit (17) changing a partial range (R1) of the display information includes a change that scrolls the partial range (R1) of the display information.

With this configuration, the display information can be scrolled and displayed on the display unit (15).

In the ninth embodiment of the receiver (1), in any one of the first to eighth embodiments, the display information is divided into a plurality of parts. The control unit (17) displays the plurality of parts one by one in order on the display unit (15) as information within a partial range (R1).

With this configuration, multiple parts of the display information can be displayed one by one in sequence on the display unit (15).

The receiver (1) of the tenth aspect is any one of the first to ninth aspects and includes a communication unit (19) that communicates with an external device. The control unit (17) is controlled based on a signal received from the external device via the communication unit (19).

According to this configuration, the control unit (17) can be controlled based on information received from an external device. This allows the information received from the external device to be displayed on the display unit (15) as display information, and also allows the settings of the control unit (17) to be changed based on the control received from the external device.

The automatic fire alarm system (100) of the eleventh aspect includes a receiver (1) of any one of the first to tenth aspects and a detector (2).

This configuration makes it possible to provide an automatic fire alarm system (100) that includes a receiver (1) and a detector (2).

The control method of the twelfth aspect includes a reception process, a display process, and a control process. In the reception process, a signal notified from the sensor (2) is received. In the display process, display information is displayed on the display unit (15) based on the signal received in the reception process. In the control process, information within a partial range (R1) of the display information is displayed on the display unit (15), and the partial range (R1) is changed within the display information.

According to this configuration, information within a partial range (R1) of the display information is displayed on the display unit (15), and the partial range (R1) is changed within the display information, so that even if the amount of display information increases, the display information can be displayed on the display unit (15) without being made smaller. As a result, even if the amount of display information increases, the visibility of the display information displayed on the display unit (15) can be improved.

The program of the thirteenth aspect causes a computer system to execute the control method of the twelfth aspect.

With this configuration, it is possible to provide a program for executing the above control method.

REFERENCE SIGNS LIST 1 Receiver 2 Sensor 14 Receiving section 15 Display section 17 Control section 19 Communication section 100 Automatic fire alarm system R1 Partial range

Claims (16)

A receiving unit that receives a signal notified from a sensor;
a display unit that displays display information based on the signal received by the receiving unit;
a control unit that displays information within a partial range of the display information on the display unit and changes the partial range of the display information;
a setting unit that sets the display information to be displayed on the display unit;
An operation unit that accepts an input operation,
the setting unit is capable of setting the display of the display information to a normal display or an enlarged display, and the setting of the normal display or the enlarged display is determined by the input operation to the operation unit;
the normal display and the enlarged display display the same display information,
Changing the partial range includes a change in which the enlarged and displayed partial range is scrolled.
Receiver. A receiving unit that receives a signal notified from a sensor;
a display unit that displays display information based on the signal received by the receiving unit;
a control unit that displays information within a partial range of the display information on the display unit and changes the partial range of the display information;
a setting unit that sets the display information to be displayed on the display unit;
An operation unit that accepts an input operation,
the setting unit is capable of setting the display of the display information to a normal display or an enlarged display, and the setting of the normal display or the enlarged display is determined by the input operation to the operation unit;
The display information is divided into a plurality of parts,
the normal display and the enlarged display display the same display information,
Changing the partial range includes displaying the enlarged and displayed display information on the display unit as information within the partial range in sequence, one by one, of the plurality of portions.
Receiver. The setting unit is capable of setting the normal display or the enlarged display by receiving a specific input via the operation unit.
2. The receiver of claim 1. The display information includes information consisting of at least one of letters, numbers, and symbols.
A receiver according to any one of claims 1 to 3. The control unit changes the partial range of the display information when a predetermined condition is satisfied.
A receiver according to any one of claims 1 to 4. When the number of characters in the display information exceeds a threshold number, the control unit changes the partial range within the display information.
6. The receiver according to claim 5. The receiver according to claim 5 , wherein the control unit changes the partial range within the display information when the display information is enlarged and displayed on the display unit. The control unit displays the information within the partial range on the display unit in a display mode selected by a user from among a plurality of display modes.
8. A receiver according to any one of claims 1 to 7. the plurality of display modes include a display mode in which the display size of the information within the partial range is changeable on the display unit;
9. The receiver of claim 8. The control unit changes the partial range of the display information to include a change in which the partial range of the display information is scrolled.
Receiver according to any one of claims 1 to 9. The display information is divided into a plurality of parts,
The control unit changes the partial range by displaying the plurality of portions one by one in order on the display unit as information within the partial range.
Receiver according to any one of claims 1 to 10. A communication unit for communicating with an external device,
The control unit is controlled based on a signal received from the external device via the communication unit.
Receiver according to any one of the preceding claims. A receiver according to any one of claims 1 to 12,
The sensor,
Automatic fire alarm system. A receiving process for receiving a signal notified from a sensor;
a display process for displaying display information on a display unit based on the signal received in the receiving process;
a control process of displaying information within a partial range of the display information on the display unit and changing the partial range within the display information;
A setting process for setting the display information to be displayed on the display unit;
An operation process for receiving an input operation to an operation unit,
In the setting process, the display of the display information can be set to a normal display or an enlarged display, and the setting of the normal display or the enlarged display is determined by the input operation to the operation unit;
the normal display and the enlarged display display the same display information,
Changing the partial range includes a change in which the enlarged and displayed partial range is scrolled.
Control methods. A receiving process for receiving a signal notified from a sensor;
a display process for displaying display information on a display unit based on the signal received in the receiving process;
a control process of displaying information within a partial range of the display information on the display unit and changing the partial range within the display information;
A setting process for setting the display information to be displayed on the display unit;
An operation process for receiving an input operation to an operation unit,
In the setting process, the display of the display information can be set to a normal display or an enlarged display, and the setting of the normal display or the enlarged display is determined by the input operation to the operation unit;
The display information is divided into a plurality of parts,
the normal display and the enlarged display display the same display information,
Changing the partial range includes displaying the enlarged and displayed display information on the display unit as information within the partial range in sequence, one by one, of the plurality of portions.
Control methods. A computer system is caused to execute the control method according to claim 14 or 15.
program.