JP6046914B2 - Alarm system - Google Patents

Description

  The present invention relates to an alarm system that spot-observes a plurality of predetermined local temperatures in a monitoring area, judges an abnormality such as a fire, and issues an alarm.

  Conventionally, alarm devices that detect and warn of abnormalities such as fires in homes and the like have become widespread. Of these, residential fire alarms are referred to as residential alarms.

  For example, in such a house alarm, it is operated by a battery power source, and a sensor part for detecting a fire and an alarm part for alarming a fire are integrally provided in the house alarm, based on a fire phenomenon detection signal of the sensor part. When a fire is detected, a fire alarm sound of a predetermined pattern is output from the alarm unit, and the fire alarm and alarm notification can be performed by a single residence guard without the need for a receiver or the like as in the so-called automatic fire alarm facility. Installation is simple and inexpensive, and it has become widespread with the mandatory installation in ordinary houses.

  In addition, by communicating between multiple home alarms, when a fire alarm sound is output from any home alarm, an interlocked home police that outputs an alarm sound in conjunction with other home alarms. Containers are also in practical use and are in widespread use.

JP 2007-094719 A Utility Model Registration No. 3143139 JP 2009-140236 A

  Most of the places where fires occur are places where various heat sources such as stoves and gas stoves are used, and places where fire is used, places where fire is used for smoking, waste bins, etc. Etc. In order to detect fires that occur in such places at an early stage, it is only necessary to install residential alarms at or near these locations, but current residential alarms and other fire alarms are It is installed on the ceiling surface and the upper part of the wall surface overlooking the entire monitoring area, and the fire is not monitored in a spot-like manner by further narrowing the location in this monitoring area.

  In order to solve this, it is unreasonable to arrange the home alarms in each region because the number of installed home alarms increases.

  As another method of spot-observing fire locally, for example, a temperature sensor is installed at or near the monitoring target device, the monitoring target location, the temperature rise due to the fire is detected, and the fire is detected based on this. A fire detection signal may be output. However, in order to detect and alarm a fire, an alarm unit that performs an acoustic alarm or display is required in addition to a sensor unit that uses a temperature sensor. The fire is monitored by placing it directly (close to) a place such as a container, which increases the cost and is not practically desirable.

  In addition, the home alarm is installed in a place where it is easy to detect a fire in consideration of convection of smoke or hot air flow, for example, the ceiling surface or the upper part of the wall surface, while the sensor unit and alarm unit, and various operation units are integrated. For example, when it is installed at a high place, it is difficult to operate because it is difficult to reach the operation part, so a place suitable for installation of the sensor part is not necessarily suitable for installation of the alarm part or operation part. There was also a problem that did not match.

  In order to solve this problem, the applicant of the present application is provided with an alarm device and a plurality of temperature measurement chips assigned thereto, and the temperature measurement chip is installed in a predetermined local area, and the temperature measurement chip is a temperature indicated by the temperature observation result. An alarm system is proposed that transmits a temperature measurement signal including a signal to an alarm device, and detects an alarm such as a fire based on the temperature of the temperature measurement signal received from the temperature measurement chip.

  According to such an alarm system, the temperature measuring chip can be used, for example, various heaters such as stoves and gas stoves, heat source equipment, its installation location, places where fire is used for smoking, especially in bed or bedroom where sleeping cigarettes are used. In addition, the temperature indicated by the temperature observation result observed in a spot by installing it in a predetermined local area such as a waste container, etc. By detecting abnormalities based on the temperature received by the alarm device and promptly and reliably alarming abnormalities such as fires occurring in a predetermined area, the user can be appropriately dealt with.

  However, when a temperature measurement chip is placed in a predetermined area such as various stoves, gas stoves, etc. and equipment that uses fire or heat sources, it is necessary to monitor abnormalities such as fires in a spot, depending on the conditions of the fire or heat source equipment. There is a possibility that the temperature at the observation point observed in will temporarily exceed the threshold temperature and a non-fire report may be issued from the alarm. For example, when a temperature measurement chip is placed on an oil stove and the fire is monitored in a spot, when the thermal power is increased during daily use of an oil stove, the observation that is observed with the temperature measurement chip There is a possibility that the temperature of the point temporarily exceeds a predetermined threshold temperature, and an alarm device detects an abnormality such as a fire and issues a non-fire alarm (non-alarm alarm).

  For this reason, it is difficult to use the temperature measurement chip close to fire or heat source equipment and spot abnormalities such as fires in a spot, and it will be placed at a position slightly away so as not to give a non-fire report, In some cases, it is not possible to spotly observe abnormalities such as a fire in a predetermined local area such as fire or heat source equipment.

It is an object of the present invention to provide an alarm system that can spot anomalies such as a predetermined local fire including fire and heat source equipment and can suppress non-fire information.

(Alarm system)
The present invention provides an alarm system,
A plurality of temperature measurement means arranged in a predetermined local area, observing the temperature of the observation point and transmitting a temperature measurement signal including the temperature indicated by the temperature observation result;
The threshold temperature for determining the temperature abnormality is set for each temperature measurement unit according to the arrangement location of the plurality of temperature measurement units, and one or a plurality of patterns in advance associated with at least two of the plurality of temperature measurement units. Alarm means for registering and determining an abnormality based on the temperature of the temperature measurement signal received from a plurality of temperature measurement means associated with any of the registered patterns and the threshold temperature , and outputting an abnormality alarm;
With
Alarm means
As the threshold temperature, at least a first threshold temperature and a second threshold temperature are registered, and as one of the patterns, a first pattern in which the first temperature measuring means and at least the second temperature measuring means are associated with each other. Is registered,
The first threshold temperature is the second threshold temperature within a range in which the temperature measurement means disposed in the vicinity of the heat source using device or the heat source using device does not detect a temperature change due to daily use of the heat source using device as abnormal. Set higher than
The second threshold temperature is a range in which a non-heat source using equipment and location that is likely to become a fire source, or temperature measuring means arranged in the vicinity thereof does not detect a daily temperature change at the location as abnormal. Is set lower than the first threshold temperature,
The first temperature measuring means is disposed to the heat source equipment used,
The second temperature measurement means is arranged closer to the heat source using device than other temperature measurement means not associated with the first pattern.

(Set the threshold temperature lower than the abnormality judgment temperature)
The alarm means determines that the threshold temperature is set lower than a predetermined abnormality determination temperature, and the temperature of the temperature measurement signal received from a plurality of associated temperature measurement means is equal to or higher than the threshold temperature, and outputs an abnormality alarm To do.

(Accumulation abnormality judgment)
The alarm means sets a predetermined accumulation time when the temperature abnormality of the temperature measurement signal received from a plurality of associated temperature measurement means is detected, and the temperature abnormality detection continues during the accumulation time. Judge abnormal condition and output abnormal alarm.

(Difference in threshold temperature)
The alarm means makes the threshold temperatures set corresponding to the plurality of temperature measuring means associated with each other different from each other.

(Linked system)
The alarm means outputs an abnormality alarm when it is judged abnormal based on the temperature abnormality detection of the temperature of the temperature measurement signal received from a plurality of associated temperature measurement means, and an abnormality interlocking signal to the alarm means of another alarm system Is transmitted to output an abnormal alarm. On the other hand, when an abnormal interlock signal is received from alarm means of another alarm system, an abnormal alarm indicating the interlock destination is output.

(Basic effect)
According to the present invention, a plurality of temperature measuring means arranged at a predetermined local area, observing the temperature of the observation point and transmitting a temperature measurement signal including the temperature indicated by the temperature observation result, and received from the plurality of temperature measuring means In an alarm system comprising an alarm means for judging an abnormality based on the temperature of the temperature measurement signal and outputting an alarm, for example, a fire alarm, the temperature measurement signal received from a plurality of temperature measurement means associated in advance. When a temperature abnormality is detected (when an AND condition for a temperature abnormality is detected), an abnormality alarm is output and an abnormality alarm is output. When a temperature abnormality at a point is detected, the temperature abnormality at the observation point by another temperature measurement means associated in advance is monitored, and from each of the observation temperatures of the temperature measurement means associated with each other. It is determined that abnormality when detecting the degree abnormality will be an alarm, the non-abnormal alarm can highly abnormal notification of certainty that suppresses.

(Effect of detecting temperature abnormality with a threshold temperature lower than the abnormality judgment temperature)
The alarm means sets a predetermined threshold temperature lower by a predetermined abnormality determination temperature as a threshold temperature for detecting a temperature abnormality of the observed temperature by a plurality of temperature measurement means associated in advance, and the alarm means is associated in advance. Warning means for detecting a temperature abnormality in the temperature measurement signal received from at least two temperature measuring means (when detecting that an AND condition for temperature abnormality is detected) and outputting an abnormality alarm. For example, the temperature indicated by the temperature observation results of a plurality of temperature measuring means associated with each other by being arranged at a relatively short distance from each other does not rise up to a predetermined abnormality judgment temperature that ignites, but is lower than that. As the temperature rises to the threshold temperature, an abnormal sign is shown. And notifying Jo alarm can discover abnormal such as a fire at an early stage.

  Also, because abnormalities are detected by detecting temperature abnormalities indicated by the temperature observation results of a plurality of temperature measuring means associated in advance, temperature abnormalities are temporarily detected by specific temperature measuring means due to factors other than abnormalities. However, unless a temperature abnormality is detected by another temperature measurement means associated in advance, an abnormality alarm is not output, and the temperature measurement means is disposed, for example, due to a temperature rise caused by daily use such as a heating device. Anomaly alarm can be reliably prevented.

(Effect of accumulated abnormality judgment)
The alarm means sets a predetermined accumulation time when a temperature abnormality of a temperature measurement signal received from a plurality of temperature measurement means associated in advance is detected (when an AND condition for temperature abnormality is detected), If each temperature abnormality detection continues during the accumulation time (when the condition of AND condition for temperature abnormality continues), it is judged as abnormal and an abnormality alarm is output. Even if a temperature abnormality is detected from the temperature of the temperature measurement signal received from the temperature measuring means, if it does not continue for a predetermined accumulation time, it is not determined as an abnormality, and it is not determined due to a temporary temperature abnormality due to a cause other than the abnormality. An abnormal alarm can be prevented more reliably.

(Effect by changing the threshold temperature)
In addition, the threshold temperature for detecting the temperature abnormality of the temperature measurement signal received from a plurality of temperature measurement means associated in advance can be made different from each other. In addition, an appropriate threshold temperature for detecting temperature abnormality can be set. For example, when a temperature measurement chip is placed in a predetermined local area near or near a fire or heat source equipment or place such as various stoves or gas stoves, a threshold value is set so that temperature changes due to daily use of the target equipment are not detected as temperature abnormalities. Set the temperature to high, for example, while using a fire for smoking, etc., a predetermined place in a bed or bedroom for sleeping cigarettes, and a device or place that is highly likely to become a fire source such as litter. For the neighborhood, for example, the threshold temperature is set to a low value in a range where temperature change at room temperature is not detected as a temperature abnormality, for example, and the threshold temperature is set in accordance with the situation of a predetermined local temperature where the temperature measurement chip is arranged. It is possible to perform abnormality monitoring that achieves both early detection and prevention of non-abnormality alarms.

(Effect of judging abnormalities with warning means)
Further, the alarm means detects the temperature abnormality of the observation temperature received from a plurality of temperature measurement means associated in advance, and judges the abnormality. Therefore, the temperature measurement means observes the temperature of the observation point and detects the temperature observation result. It is only necessary to transmit the temperature measurement signal including the temperature indicated by the alarm means to the alarm means, so that the structure of the temperature measurement means is simplified, and the size and cost can be reduced.

(Effect of interlocking alarm system)
In addition, since one alarm system and a plurality of temperature measurement chips assigned to the alarm system constitute one alarm system, and a plurality of alarm systems can be provided and arranged in each room, for example, an alarm system for a room When an abnormality is detected and alarmed, an abnormal interlocking signal can be sent to an alarm system in another room to notify the alarm, and a multi-communication network between multiple alarm systems can be constructed flexibly and appropriately, It is possible to detect anomalies in a multi-spot manner and provide early warnings in response to monitoring areas such as detached houses, apartment houses, schools, hospitals, and office buildings.

Explanatory drawing showing an installation example of an alarm system according to the present invention Explanatory drawing which showed schematic structure of the alarm system by this invention Explanatory drawing showing the appearance and structure of the temperature measurement chip Block diagram showing outline of functional configuration of temperature measurement chip Block diagram showing an outline of the functional configuration of the alarm An explanatory diagram showing the relationship between an example of an alarm system installed in a kitchen and a temperature measurement chip Time chart showing abnormal monitoring operation in the normal monitoring state by the alarm system of FIG. FIG. 6 is a time chart showing an abnormality monitoring operation when an abnormality occurs due to the alarm system of FIG. Explanatory drawing which showed other embodiment of the temperature measurement chip | tip. Explanatory drawing which showed other embodiment of the temperature measurement chip | tip. Explanatory drawing which showed other embodiment of the temperature measurement chip | tip. Explanatory drawing which showed other embodiment of the temperature measurement chip | tip.

[Configuration of alarm system]
(Outline of system configuration)
FIG. 1 shows an installation example of an alarm system according to the present invention for a house, and FIG. 2 shows a schematic configuration of the alarm system by taking out an alarm device and a temperature measuring chip. The alarm system of the present invention comprises one alarm device and a plurality of temperature measurement chips.

  The temperature measurement chip 10 (10-11 to 10-44) is a temperature measurement means that is arranged in a predetermined local area, observes the temperature of the observation point, and transmits a temperature measurement signal including the temperature indicated by the temperature observation result, The alarm device 100 (100-1 to 100-4) is configured to determine an abnormality based on the temperature of the temperature measurement signal received from a plurality of temperature measurement means allocated and managed, and to output an abnormality alarm It is a means for judging the abnormality based on the temperature abnormality of the temperature of the temperature measurement signal received from a plurality of temperature measurement chips associated in advance (based on the success or failure of the temperature abnormality AND condition) and outputting an abnormality alarm. Further, the plurality of temperature measuring means are arranged in a predetermined local area within the communication range of the alarm means for managing the temperature measuring means. In the following description, a case where the alarm device 100 outputs a fire alarm as an abnormality alarm will be described as an example.

(Alarm and temperature measurement chip arrangement)
1 and 2, the temperature measurement chips 10-11 to 10-10 are divided into rooms such as a kitchen, a living room, a children's room, and a main bedroom of the house 14 and correspond to each of the alarm devices 100-1 to 100-4. -14, 10-21 to 10-24, 10-31 to 10-34, 10-41 to 10-44 are allocated and arranged to constitute alarm systems A1 to A4.

  That is, the alarm system A1 is composed of the alarm device 100-1 and the temperature measurement chips 10-11 to 10-14, and the alarm system A2 is composed of the alarm device 100-2 and the temperature measurement chips 10-21 to 10-24. The alarm system A3 includes an alarm device 100-3 and temperature measurement chips 10-31 to 10-34, and the alarm system A4 includes an alarm device 100-4 and temperature measurement chips 10-41 to 10-44.

  Taking the kitchen alarm system A1 as an example, the temperature measurement chips 10-11 to 10-14 observe the temperature at each observation point, and output a temperature measurement signal including the temperature indicated by the temperature observation result to the alarm device 100-1. Send to. The alarm device 100-1 previously registers a plurality of temperature measurement chips arranged in a predetermined local area and their associations in a memory or the like, and the temperature abnormality of the temperature measurement signal received from the plurality of temperature measurement chips associated with each other. Based on the above (based on the success or failure of the temperature abnormality AND condition), an abnormality is determined, and a fire alarm is output when an abnormality is determined.

  For example, the alarm device 100-1 pre-registers the temperature measurement chips 10-11 and 10-12 whose installation locations are close to each other as related temperature measurement chips, and receives the temperature measurement chips 10-11 and 10-12 from each of the temperature measurement chips 10-11 and 10-12. When a temperature measurement signal is received, and when an AND condition having a temperature abnormality detected based on the temperature of each temperature measurement signal is satisfied, accumulation starts, and when the AND condition continues to be established for a predetermined accumulation time ΔT The fire alarm is output when it is judged abnormal.

  Further, the alarm device 100-1 previously registers, for example, the temperature measurement chips 10-13 and 10-14 as a plurality of temperature measurement chips respectively arranged at different predetermined local locations, and the temperature measurement chips 10-11 and 10 are registered. Similarly to the case of -12, temperature measurement signals are received from the temperature measurement chips 10-13 and 10-14, and accumulation is performed when the AND condition of the temperature abnormality detected based on the temperature of each temperature measurement signal is satisfied. If the AND condition continues to be established for a predetermined accumulation time ΔT, it is determined that there is an abnormality and a fire alarm is output.

  Between the alarm device 100-1 and the temperature measurement chips 10-11 to 10-14, there is a communication path 11 according to a predetermined first communication protocol, and the temperature measurement chips 10-11 to 10-14 are connected via this communication path 11. Then, a signal including an alarm group code unique to the alarm system A1 is transmitted to the alarm device 100-1. The same applies to the other alarm systems A2 to A4.

  In the example of FIG. 1, an interlocking group is formed by enabling mutual communication with the alarm devices 100-1 to 100-4 provided in the alarm systems A1 to A4. A communication path 12 according to a predetermined second communication protocol is provided between the alarm devices 100-1 to 100-4, and an interlock configured by a plurality of alarm systems by transmitting and receiving a signal including a predetermined interlock group code. Enable communication within the group. For example, the alarm device 100-1 determines an abnormality based on reception of temperature measurement signals from at least two of the temperature measurement chips 10-11 to 10-14 belonging to its own alarm system (alarm system A1). When the fire alarm indicating the interlock source is output, the abnormal interlock signal is transmitted to the alarm devices 100-2 to 100-4 of the other alarm systems A2 to A4, and the alarm devices 100-2 to 100-4 that have received the alarm interlock signals are received. To output a fire alarm indicating the link destination.

  As described above, the present invention links a plurality of alarm systems including at least one alarm system that manages a plurality of temperature measurement chips 10 with one alarm device 100.

  Here, managing a plurality of temperature measurement chips 10 with one alarm device 100 means that a plurality of temperature measurement chips 10 are assigned to one alarm device 100 provided in the alarm system, and the plurality of temperature measurement chips 10 thus allocated are assigned. The alarm device 100 effectively receives a temperature measurement signal transmitted from each of at least two temperature measurement chips 10 associated in advance, and an AND condition of temperature abnormality detected based on the temperature of each temperature measurement signal is established. In this case, accumulation is started, and when the AND condition is established for a predetermined accumulation time ΔT, it is determined that there is an abnormality and a fire alarm is output.

  Accumulation means that the establishment of the AND condition having a temperature abnormality is accumulated for a predetermined accumulation time. That is, when the temperature abnormal AND condition is met, the timing of the predetermined accumulation time is started. When the temperature abnormal AND condition is not met during the accumulation time measurement, the accumulation is canceled and the accumulation is canceled. If the predetermined accumulation time has passed without being completed, the accumulation is completed and it is determined that the AND condition has been established over the accumulation time.

  The interlocking of a plurality of alarm systems means that the alarm device 100 of one alarm system has each of at least two temperature measurement chips 10 associated in advance among a plurality of temperature measurement chips managed by the alarm device. When the transmitted temperature measurement signal is effectively received and the AND condition of the temperature abnormality detected based on the temperature of each temperature measurement signal is satisfied, the accumulation starts, and the AND condition continues to be established for a predetermined accumulation time ΔT. When a fire alarm is output indicating the linkage source when it is judged abnormal, an abnormal linkage signal is generated, and the abnormal linkage signal is transmitted to an alarm device of another alarm system to output a fire alarm indicating the linkage destination. On the other hand, when an abnormal interlock signal transmitted from any alarm device of another alarm system is received, a fire alarm indicating the interlock destination is output.

  In addition, although the following description takes an example of an interlocking system when the alarm devices 100-1 to 100-4 form an interlocking group, the interlocking group may be formed by some of the alarm systems, or interlocking The alarm systems A1 to A4 may be used as independent systems without forming a group. Hereinafter, when the alarm devices 100-1 to 100-4 and the temperature measurement chips 10-11 to 10-44 are not distinguished from each other, they are referred to as the alarm device 100 and the temperature measurement chip 10.

  Here, the temperature of the observation point observed by the temperature measurement chips 10-11 to 10-44 is temperature information that is an index indicating the temperature observed based on a detection signal of a temperature detection element (described later). Or “observation temperature”.

  The temperature measuring chip 10 can be arranged in a predetermined local area in the house 14 such as the inside or outside surface of a device using fire, the inside or outside surface of a device serving as a heat source, the inside or outside surface of a waste bin, or the vicinity thereof. As the predetermined local area in the house 14, for example, there are a stove and a litter box installed in a kitchen gas stove, a kitchen, a living room and a children's room, a bed in a main bedroom for sleeping cigarettes, a television set in the living room, and the like. .

  In each alarm system of this embodiment, a plurality of temperature measurement chips 10 are arranged, and these are assigned to one alarm device 100 for management. For this reason, the several temperature measurement chip | tip 10 allocated to the alarm device 100 is arrange | positioned in the predetermined local which enters the communication range of the alarm device 100 which manages these. The communication range of the alarm device 100 refers to a range in which a signal transmitted from the temperature measurement chip 10 assigned and managed by the alarm device 100 falls within a communication distance that can be effectively received by the alarm device 100.

  The system shown in FIGS. 1 and 2 is provided with four alarm systems that combine such an alarm device 100 and a temperature measurement chip 10 that is assigned to and managed by the alarm device 100.

[Configuration of temperature measurement chip]
(Appearance and structure of temperature measurement chip)
FIG. 3 is an explanatory view showing the appearance of the temperature measuring chip provided in FIG. 1. FIG. 3A is a plan view, FIG. 3B is a cross section of the internal structure, and FIG. Show.

  In FIG. 3, the temperature measurement chip 10 has a disk-shaped cover 18 opened at one end (lower side of FIG. 3B) molded with a synthetic resin, for example, and a base 20 mounted on the opening side of the cover 18. The circuit board 22 is housed inside the housing. A seal 45 indicating a number for identifying the ID of the temperature measurement chip 10 is attached to the surface of the cover 18 as necessary.

  A button battery 24 is housed between the circuit board 22 and the base 20, a positive terminal fitting 32 is in contact with the positive electrode of the button battery 24, and a negative electrode on the end face located on the circuit board 22 side of the button battery 24 is connected to the negative electrode. The terminal fitting 30 is in contact.

  The button battery 24 is fixed by attaching a battery lid 26 to the opening hole of the base 20. The battery lid 26 can be locked by forming L-shaped fitting protrusions at two opposite locations on the inner periphery of the outer periphery and inserting and turning the L-shaped fitting protrusions into the fitting notches formed in the opening of the base 20. The battery cover 26 is formed with a fitting groove 28 for fitting a coin or the like for a turning operation when the button battery 24 is attached or detached.

A control chip 38 and a wireless communication chip 40 are mounted on the upper side surface of the circuit board 22, and a temperature detection element 36 is mounted inside a slit (opening) 42 formed in the cover 18 at a position where outside air flows. doing. As the temperature detection element 36, an appropriate temperature detection element such as a thermistor whose resistance value changes according to the temperature of the observation point (heat sensitive part) is used.

  In addition, an LED 46 is mounted on the circuit board 22, and a display window 44 using a transparent resin or the like is disposed on the cover 18 side.

  A mounting sheet 34 is provided on the outer periphery of the surface of the base 20. The attachment sheet 34 is a magnetic sheet or an adhesive sheet, and can be easily attached and arranged on the attachment surface of the device or place to be monitored. In addition, an attachment means and a method are arbitrary, In addition to the attachment sheet | seat 34, appropriate means, such as a hook, a clip, a string, can be provided as needed.

(Functional configuration of temperature measurement chip)
FIG. 4 is a block diagram showing an outline of the functional configuration of the temperature measurement chip. The temperature measuring chip 10 includes a temperature detecting element 36, a temperature measuring control unit 48, and a communication unit 50 connected to an antenna 52, and operates by receiving power supply from the button battery 24 shown in FIG. The temperature measurement control unit 48 is a function realized by executing a program, for example. The hardware includes a control chip 38 shown in FIG. 3, and a computer circuit or a wired logic circuit having a CPU, a memory, various input / output ports, and the like.

  The communication unit 50 includes the wireless communication chip 40 of FIG. 3 and transmits / receives signals to / from the alarm device 100-1 according to a predetermined first communication protocol. As the first communication protocol, for example, a short-range communication protocol for a sensor network using a frequency of 900 MHz assigned to RFID (Radio Frequency IDentification “abbreviation of individual identification by radio wave”), that is, 950 to 957 MHz is used. This signal has a format including data such as a transmission source code, an alarm group code (alarm system identification code), a control command, and an observation temperature, which are identifiers indicating the transmission source. For example, a serial number is used as the transmission source code.

  As described above, for example, the thermistor is used as the temperature detection element 36, and in this case, a voltage detection signal corresponding to a change in resistance value due to temperature is output to the temperature measurement control unit 48.

  The temperature measurement control unit 48 is a function realized by executing a program by the CPU, for example.

  The temperature measurement control unit 48 observes the temperature at the observation point based on an instruction from the alarm device 100, for example, and transmits a temperature measurement signal including the temperature indicated by the temperature observation result. That is, when the temperature measurement control unit 48 detects the effective reception of the batch AD conversion signal transmitted from the mortgage alarm device 100 at predetermined intervals via the communication unit 50, the temperature measurement control unit 48 is based on the detection signal from the temperature detection element 36. When the temperature is observed and the polling signal specifying the address (for example, the sender code) is transmitted, the temperature measurement signal including the temperature indicated by the temperature observation result is generated. The communication unit 50 is instructed to control the temperature measurement signal to be transmitted to the home alarm device 100.

  In this way, by observing and transmitting the temperature according to the instruction from the home guard 100, it is possible to avoid a collision (transmission failure) of the temperature measurement signals transmitted from the plurality of temperature measurement chips 10. In addition, the temperature observation timings of the plurality of temperature measurement chips 10 can be matched.

  Note that the temperature measurement control unit 48 voluntarily observes the temperature every predetermined period and transmits a temperature measurement signal including the temperature indicated by the temperature observation result, regardless of the instruction from the alarm device 100. good. In this case, carrier sensing is performed so as not to overlap with the transmission of temperature measurement signals from other temperature measurement chips, and transmission is performed at a timing with no carrier.

[Alarm configuration]
FIG. 5 is a block diagram showing an outline of a functional configuration of the alarm device 100-1. 5 shows the alarm device 100-1 of the alarm system A1, the configurations of the alarm devices 100-2 to 100-4 of the other alarm systems A2 to A4 are the same.

(Functional configuration of alarm device)
In FIG. 5, the alarm device 100-1 includes an alarm control unit 102, a first communication unit 104 connected to an antenna 106, a second communication unit 108 connected to an antenna 110, a notification unit 112, and an operation unit 114, not shown. It operates with a power source, for example a battery power source. The alarm device 100-1 includes an ID for identifying each of the plurality of temperature measurement chips 10 managed by the alarm device 100 and a memory for registering and storing the relationship between them (not shown). The alarm control unit 102 can be read out.

  The alarm control unit 102 uses a computer circuit or a wired logic circuit equipped with a CPU, memory, various input / output ports, and the like.

  The first communication unit 104 receives an instruction from the alarm control unit 102, and transmits and receives signals to and from the temperature measurement chips 10-11 to 10-14 according to the first communication protocol. This signal has a format including data such as a transmission source code indicating a transmission source, an alarm group code, a control command, and an observation temperature, as in the case of the communication unit 50 of the temperature measurement chip 10. The aforementioned temperature measurement signal corresponds to this signal. The alarm group code is a code unique to the alarm system (in this case, A1). By using such an alarm group code, a communication message such as a temperature measurement signal is transmitted between the other adjacent alarm systems A2 to A4. Can avoid interference.

  The 2nd communication part 108 transmits / receives an interlocking signal according to a predetermined | prescribed 2nd communication protocol between the alarm devices 100-2 to 100-4 of other alarm systems. The interlock signal is assigned as a unique identifier to each alarm device 100, and is used as a code indicating the transmitter when transmitting the signal. Code) and an event code indicating an event such as an abnormality. The alarm device 100-1 forms an interlocking group that transmits and receives interlocking signals with the alarm devices 100-2 to 100-4 according to the second wireless communication protocol, and the interlocking group code is a code unique to this group. By using such interlocking group codes, it is possible to avoid interference of interlocking signals with other adjacent groups.

  In the case of transmission / reception using the second communication protocol in Japan, for example, STD-30 (a wireless equipment standard for a low power security system radio station) or STD- known as a standard for a specific low power radio station in the 400 MHz band. Conforms to T67 (standard for low-power radio station telemeter, telecontrol and data transmission radio equipment).

  The notification unit 112 includes a speaker, an LED, and respective drive circuits. The notification unit 112 outputs an alarm sound from the speaker according to an instruction from the alarm control unit 102 as needed, and displays an alarm with the LED. The operation unit 114 includes various switches such as an alarm stop switch that receives an operation for stopping an alarm sound and / or an alarm display. The operation unit 114 also has a registration operation unit for performing a registration operation for registering and storing the IDs for identifying the plurality of temperature measurement chips 10 managed by the alarm device 100-1 and their associations in the memory. . The alarm device 100-1 may be provided with a display unit that displays information necessary for the registration operation.

  The alarm control unit 102 is a function realized by executing a program of the CPU, and performs the following control.

(Temperature measurement control)
The alarm control unit 102 instructs the first communication unit 104 to perform batch AD conversion from the first communication unit 104 to the temperature measurement chips 10-11 to 10-14 of the alarm system A1 at predetermined intervals according to the first communication protocol. Control for transmitting a signal is performed, and the temperature measurement chips 10-11 to 10-14 that have received the signal are caused to perform a temperature observation operation. Subsequently, the alarm control unit 102 instructs the first communication unit 104 to send a polling signal designating the address of the temperature measurement chip 10, for example, a transmission source code that is an identifier assigned to each temperature measurement chip 10 to the first communication. The temperature measurement signal including the temperature indicated by the temperature observation result is transmitted from the temperature measurement chip 10-11 to 10-14 that has received the polling signal. Send sequentially.

  Note that, regardless of the instruction from the alarm device 100-1, the temperature measurement chip 10 voluntarily observes the temperature every predetermined period and transmits a temperature measurement signal including the temperature indicated by the temperature observation result. In this case, the above-described control for observing the temperature by transmitting the batch AD conversion signal and the polling signal becomes unnecessary.

(Temperature abnormality detection control)
Further, the alarm control unit 102 performs control to detect a temperature abnormality when the temperature of the temperature measurement signal received from the temperature measurement chip 10 is equal to or higher than the threshold temperature Tth. The temperature abnormality detection may be performed when a temperature change rate is obtained from temperatures observed a plurality of times and this temperature change rate (increase rate) is equal to or higher than a predetermined change rate threshold value. In addition, the temperature abnormality may be detected by various calculations based on the temperature.

Here, the alarm control unit 102 sets a predetermined temperature that becomes an abnormality determination temperature, for example, a predetermined threshold temperature Tth lower than 75 ° C. as a threshold temperature Tth for detecting temperature abnormality, and stores it in a memory or the like (not shown in FIG. 5). ing. This threshold temperature Tth is set as required when the user installs an alarm system in accordance with the temperature of a predetermined local temperature where the temperature measuring chip 10 is disposed.

  For example, when the temperature measuring chip 10 is disposed in a predetermined local area such as various stoves, gas stoves, etc., or a device or place using a heat source or in the vicinity thereof, a temperature change due to daily use of the target device is not detected as a temperature abnormality. The threshold temperature Tth is set higher, for example, Tth = 65 ° C.

  In addition, a place where the temperature measurement chip 10 is used for smoking or the like, a predetermined place in a bed or bedroom for sleeping cigarettes, a device or place that is likely to become a fire source such as a litter box, or the vicinity thereof. In the case where the device is disposed locally, that is, in a predetermined local area that is not in the vicinity of the device or place where the fire or heat source is used, for example, the threshold temperature Tth is set to, for example, a lower Tth = 50 ° C. .

  Specifically, the alarm control unit 102 initially sets, for example, a threshold temperature Tth = 50 ° C., and when the alarm system is installed, the user needs to match the predetermined locality where the temperature measurement chip 10 is installed. Accordingly, the initially set threshold temperature is changed to the threshold temperature.

  In addition, after detecting the temperature abnormality, the alarm control unit 102 recovers the temperature abnormality (the temperature abnormality detection state is resolved) when the temperature of the temperature measurement signal effectively received from the same temperature measurement chip 10 falls below the threshold temperature Tth. Control to detect).

(Fire alarm control)
Further, the alarm control unit 102 stores a plurality of temperature measurement chips arranged in a predetermined local area and their relations in a memory as necessary, and registers them in advance and receives them from a plurality of temperature measurement chips associated with each other. If the AND condition of the temperature abnormality detected from the temperature of the temperature measurement signal is satisfied and this continues for a predetermined accumulation time ΔT, it is determined (determined) as an abnormality and a fire alarm is output.

FIG. 6A shows an example of a kitchen in which an alarm system A1 is arranged. The alarm device 100-1 is arranged at a wall surface position where the display is easy to see and operate, and the temperature measuring chip 10-11 is directly attached to the oil stove 16. The temperature measuring chip 10-12 is arranged near the oil stove 16, and the temperature measuring chips 10-13 and 10-14 are arranged relatively far from the oil stove 16. ing. (Actually, a case is assumed in which the installation position of the oil stove 16 changes relative to the installation position of the temperature measuring chips 10-12 to 10-14 by moving the stove or the like. It can be said that (A) shows such a case .

  When the temperature measurement chips 10-11 to 10-14 are arranged in a predetermined local area as shown in FIG. 6A, the alarm control unit 102 measures the temperature as shown in the list (table) of FIG. 6B, for example. For each of the chips 10-11 to 10-14, a plurality of temperature measurement chips 10 arranged at predetermined local locations that are related to each other are registered in advance in a memory or the like (not shown in FIG. 5) as related.

  For example, the temperature measurement chip 10-11 attached to the outer surface of the oil stove 16 is registered in association with the temperature measurement chip 10-12 disposed in the vicinity thereof, and the temperature measurement chip 10-12 is registered in the vicinity thereof. The adjacent temperature measurement chips 10-11, 10-13 and 10-14 are registered in association with each other, the temperature measurement chip 10-12 is registered in association with the temperature measurement chip 10-13, and the temperature measurement chip 10-14 is registered. Is registered in association with the temperature measuring chip 10-12. This is merely an example, and an expected occurrence of an abnormality such as associating the temperature chip 10-12 to 10-14 with the temperature chip 10-11 and associating the temperature chip 10-11 with each of the temperature chips 10-12 to 10-14. Various registration patterns can be selected according to the above.

  The IDs of the temperature measurement chips 10-11 to 10-14 use identifiers such as transmission source codes.

  The alarm controller 102 belongs to the alarm system A1 via the first communication unit 104, and is transmitted from at least two temperature measurement chips 10, for example, temperature measurement chips 10-11 and 10-12, which are associated with each other. When the temperature measurement signal according to the first communication protocol is effectively received, the AND condition of the temperature abnormality detected based on the temperature of each temperature detection signal is satisfied, and this continues for a predetermined accumulation time ΔT, Judges abnormalities and outputs a fire alarm.

  For this abnormality determination, the alarm control unit 102 stores, for example, a temperature abnormality detection flag assigned to each of the temperature measurement chips 10-11 to 10-14 in the memory, and the temperature measurement signal that is effectively received from the temperature measurement chip 10 When a temperature abnormality detection is detected, the corresponding temperature abnormality detection flag is set, and then, when the temperature abnormality recovery of the temperature of the temperature measurement signal effectively received from the same temperature measurement chip 10 is detected, the corresponding temperature is detected. Reset the abnormality detection flag.

  For example, when the alarm control unit 102 detects the temperature abnormality of the temperature measurement signal effectively received from the temperature measurement chip 10-11 and sets the temperature abnormality detection flag corresponding to the temperature measurement chip 10-11, the alarm control unit 102 measures the temperature. With reference to the temperature abnormality detection flag corresponding to the temperature measurement chip 10-12 associated with the chip 10-11, when both temperature abnormality detection flags of the temperature measurement chips 10-11 and 10-12 are in the set state, It is determined that the AND condition of the temperature abnormality detected by the temperature measurement chips 10-11 and 10-12 is satisfied, and accumulation is started. When a predetermined accumulation time ΔT has elapsed, both temperature abnormality detection flags are set again. If it is checked and it is determined that the AND condition having a temperature abnormality is satisfied (the AND condition has been satisfied for a predetermined accumulation time ΔT). If it is determined that there is a problem, the alarm unit 112 is controlled to output a fire alarm.

  As a fire alarm in this case, for example, a voice message such as “Please confirm that a fire has been detected” is repeatedly output from the speaker, and the LED is lit, for example.

  Further, the alarm control unit 102 starts accumulation when the AND condition having a temperature abnormality detected by at least two temperature measurement chips 10 associated in advance is established, and the establishment of the AND condition continues for a predetermined accumulation time ΔT. When a fire alarm is output based on the above, an abnormal interlocking signal according to the second communication protocol is generated in accordance with this, and the abnormal interlocking signal is sent from the second communication unit 108 to the alarm devices 100-2 to 100-2 of other alarm systems. Control to transmit to 100-4 is performed, and a fire alarm indicating the interlock destination is output by alarm devices 100-2 to 100-4 of other alarm systems that have effectively received the abnormal interlock signal. In this case, the fire alarm indicating the interlocking destination performs a control to repeatedly output a voice message such as “Please confirm that a fire has been detected in another location” from the speaker and to blink the LED, for example.

  When the alarm control unit 102 detects effective reception of the abnormal interlocking signal transmitted by any of the alarm devices 100-2 to 100-4 of the other alarm systems via the second communication unit 108, the notification unit 112 Control to output a fire alarm (alarm sound and / or alarm display) indicating the link destination from.

  “Detecting effective reception of signal” means that the alarm group code or the interlocking group code included in the received signal matches the alarm group code or the interlocking group code registered in advance in its own memory as the receiving device. Recognized as a signal addressed to itself (a signal from the temperature measuring chip 10 under its control or a signal within the interlocking group to which it belongs), and there is no abnormality (error) in the signal content It means that you recognized that. Hereinafter, such effective reception may be simply referred to as reception.

(Abnormality recovery control)
The alarm control unit 102 has at least two temperature measurement chips 10 (all temperature measurement chips 10 related to the success or failure of one AND condition) that are associated in advance via the first communication unit 104 as the source of the fire alarm. In this case, the alarm device 100-1 recovers the temperature abnormality from the temperature of the temperature measurement signal that is effectively received from the temperature measurement chips 10-11 and 10-12 according to the first communication protocol, for example, from which the fire alarm is output. Detecting and resetting each temperature abnormality detection flag (the AND condition for temperature abnormality recovery is satisfied), and the reset state of each temperature abnormality detection flag continues for the same predetermined accumulation time ΔT as in the case of abnormality determination, for example (When the temperature abnormality is detected during the accumulation time ΔT and the temperature abnormality detection flag is not set), it is caused by the temperature measurement signal from the notification unit 112 The fire alarm output (alarm sound and / or alarm display) indicating the interlocking destination to be stopped is stopped, and an abnormality recovery interlock signal according to the second communication protocol is generated, and the second communication unit 108 is instructed, and the abnormality recovery interlock is performed. Control is performed to transmit the signal to the alarm devices 100-2 to 100-4 of the other alarm systems, and the alarm devices 100-2 to 100-4 of the other alarm systems that have received this control are caused by the same temperature measurement signal. Stop the fire alarm output (alarm sound and / or alarm display) indicating the link destination.

  Further, the alarm control unit 102 notifies when an effective reception of the abnormality recovery interlocking signal transmitted from any of the alarm devices 100-2 to 100-4 of other alarm systems via the second communication unit 108 is detected. Control which stops the fire alarm output (alarm sound and / or alarm display) which shows the interlocking | linkage destination from the part 112 is performed.

  The abnormality recovery control detects abnormality recovery from the temperature of a temperature measurement signal that is effectively received from, for example, at least one of the temperature measurement chips 10-11 and 10-12, and resets the temperature abnormality detection flag. Further, it may be performed when the reset state of the temperature abnormality detection flag continues for the same predetermined accumulation time ΔT as in the case of fire determination, for example.

(Alarm stop control)
Warning control unit 102, when detecting an alarm stop operation accepted by the alarm stop switch of the operation unit 114 while the output of the fire alarm as a linkage source fire alarm output indicating a linkage source from the alert section 112 (warning sound and / Or alarm display), and generates an alarm stop interlocking signal in accordance with the second communication protocol and instructs the second communication unit 108 to send the alarm stop interlocking signal to the alarm devices 100-2 to 100-2 of other alarm systems. The control which transmits to 100-4 is performed, and the alarm device 100-2 to 100-4 of the other alarm system which received this stops the fire alarm output (alarm sound and / or alarm display) which shows an interlocking destination.

  When the alarm control unit 102 detects the effective reception of the alarm stop interlocking signal transmitted from any of the alarm devices 100-2 to 100-4 of the other alarm systems via the second communication unit 108, the alarm control unit 102 Control to stop the fire alarm output indicating the interlocking destination from 112 is performed.

[Alarm system operation]
Next, the abnormality monitoring operation by the alarm system of the present invention will be described taking the alarm system A1 shown in FIG. 6 as an example. Note that the distinction between the first communication protocol and the second communication protocol in signal transmission / reception is omitted.

(Operation in normal monitoring state)
FIG. 7 shows an abnormality monitoring operation in a normal monitoring state by the temperature measuring chip 10-11 disposed on the oil stove 16 of the alarm system A1 installed in the kitchen of FIG. 6A and the temperature measuring chip 10-12 associated therewith. The case where temperature abnormality is detected for some reason is taken as an example.

  That is, FIG. 7 (A) shows the time change of the observed temperature, temperature abnormality detection, recovery detection, and temperature abnormality detection flag received from the temperature measurement chip 10-11 arranged in the oil stove 16 in the alarm device 100-1. FIG. 7B shows the time change of the observed temperature, temperature abnormality detection, recovery detection, and temperature abnormality detection flag received from the temperature measurement chip 10-12 associated with the temperature measurement chip 10-11 in the alarm device 100-1. Further, FIG. 7 (C) shows an abnormality determination situation of the alarm device 100-1.

  The oil stove 16 arranged in the kitchen of FIG. 6A is an example in which the user has changed the operation maintenance temperature of the stove to a high temperature, and is arranged on the outer surface of the oil stove 16 accordingly. As shown in FIG. 7A, for example, the observed temperature of the temperature measuring chip 10-11 rises above the threshold temperature Tth at time t1, falls below the threshold temperature Tth at time t3, rises again, and reaches the threshold at time t5. After rising above the temperature Tth, the change below the threshold temperature Tth is repeated at time t7.

  In this case, the alarm device 100-1 detects the temperature abnormality at the time t1, sets the temperature abnormality detection flag, detects the temperature abnormality recovery at the time t3, resets the temperature abnormality detection flag, and resets the temperature at the time t5. An abnormality is detected, a temperature abnormality detection flag is set, and at time t7, a temperature abnormality recovery is detected and the temperature abnormality detection flag is reset.

  On the other hand, the observed temperature of the temperature measurement chip 10-12 associated with the temperature measurement chip 10-11 changes with a time delay with respect to the temperature measurement chip 10-11 as shown in FIG. After the temperature rises above the threshold temperature Tth, the temperature falls below the threshold temperature Tth at time t4, rises again at time t6, rises above the threshold temperature Tth at time t6, and then changes below the threshold temperature Tth at time t8.

  For this reason, the alarm device 100-1 detects a temperature abnormality at time t2, sets a temperature abnormality detection flag, detects a temperature abnormality recovery at time t4, resets the temperature abnormality detection flag, and again detects a temperature abnormality at time t6. Is detected, the temperature abnormality detection flag is set, and at time t8, temperature abnormality recovery is detected and the temperature abnormality detection flag is reset.

  Further, the alarm device 100-1 determines whether or not the AND condition of the temperature abnormality detection flag corresponding to the temperature measurement chips 10-11 and 10-12 has been established, and at the time t2, the temperature measurement chips 10-11 and 10- When it is determined that the AND condition in which both the temperature abnormality detection flags corresponding to 12 are in the set state is established, accumulation is started. However, when the temperature abnormality detection flag is reset by detecting the recovery of the temperature measurement chip 10-11 at time t3 before the accumulation time ΔT elapses, both of the temperature abnormality detection flags corresponding to the temperature measurement chips 10-11 and 10-12 are set. Since the AND condition is no longer established and the AND condition is not established over the accumulation time ΔT, no abnormality is determined.

  Further, the alarm device 100-1 starts accumulation even when the temperature abnormality detection flags corresponding to the temperature measurement chips 10-11 and 10-12 are both set and the AND condition is satisfied at time t6, At t7, when the temperature abnormality detection flag is reset by detecting the recovery of the temperature measurement chip 10-11, the temperature abnormality detection flags corresponding to the temperature measurement chips 10-11 and 10-12 are both set and the AND condition is not satisfied. Since the establishment of the AND condition does not continue over the accumulation time ΔT, no abnormality is determined.

  As described above, in the alarm system of the present invention, the observation temperature of the associated temperature measurement chips 10-11 and 10-12 varies so as to become the threshold temperature Tth or more due to some factor other than an abnormality such as a fire. Thus, when a temperature abnormality is temporarily detected, it is possible to reliably prevent the occurrence of a non-abnormality alarm (non-fire alarm) by judging the abnormality.

(Operation when abnormality occurs)
FIG. 8 shows the operation in the case of a fire that uses the oil stove 16 as a fire source in the kitchen of FIG.

  As shown in FIG. 8A, the observed temperature of the temperature measuring chip 10-11 disposed in the oil stove 16 that has become the source of fire rises to the threshold temperature Tth or higher at time t1, and then the threshold temperature Tth is increased at time t3. It falls below, rises again, and reaches the threshold temperature Tth or higher at time t5.

  In this case, the alarm device 100-1 detects a temperature abnormality at time t1, sets a temperature abnormality detection flag, detects a temperature abnormality recovery at time t3, and resets the temperature abnormality detection flag. At t5, the temperature abnormality is detected again and the temperature abnormality detection flag is set.

  On the other hand, the observation temperature of the temperature measurement chip 10-12 associated with the temperature measurement chip 10-11 changes with a time delay with respect to the temperature measurement chip 10-11 as shown in FIG. After the temperature rises above the threshold temperature Tth, the temperature falls below the threshold temperature Tth at time t4 and rises again to reach the threshold temperature Tth at time t6.

  For this reason, the alarm device 100-1 detects a temperature abnormality at time t2, sets a temperature abnormality detection flag, detects a temperature abnormality recovery at time t4, resets the temperature abnormality detection flag, and again detects a temperature abnormality at time t6. Is detected and the temperature abnormality detection flag is set.

  The alarm device 100-1 starts accumulation when the two temperature abnormality detection flags corresponding to the temperature measurement chips 10-11 and 10-12 are both set at time t2 and it is determined that the AND condition is satisfied. However, the AND condition is not satisfied by resetting the temperature abnormality detection flag by detecting the recovery of the temperature measurement chip 10-11 at time t3 before the accumulation time ΔT elapses, and the AND condition does not continue over the accumulation time ΔT. Not judged as abnormal.

  On the other hand, when the temperature abnormality detection flags corresponding to the temperature measurement chips 10-11 and 10-12 are both set at time t6 and it is determined that the AND condition is satisfied, accumulation starts, and at time t7 when the accumulation time ΔT has elapsed. Since both the temperature abnormality detection flags are in the set state and the AND condition continues to be established over the accumulation time ΔT, it is determined that there is an abnormality and a fire alarm (alarm sound and / or alarm display) indicating the interlocking source is output. An abnormal interlocking signal is generated, instructed to the second communication unit 108, the abnormal interlocking signal is transmitted to the alarm devices 100-2 to 100-4 of other alarm systems, and the alarm device 100- 2 to 100-4, fire alarm output (alarm sound and / or alarm display) indicating the interlock destination is performed.

As described above, in the present invention, since the temperature abnormality is detected by setting the threshold temperature Tth lower than the abnormality determination temperature in the alarm device 100 , for example, the temperature measurement chips 10-11 and 10- associated in advance are detected. Even if the AND condition of the temperature abnormality detected in 12 is established and accumulation is started, and the AND condition is established for a predetermined accumulation time ΔT, the abnormality is determined. With respect to the timing of the abnormality determination, it can be determined and notified at an early stage without causing a large time delay.

  7 and 8 show the abnormality determination based on the temperature abnormality detection of the two temperature measurement chips 10-11 and 10-12, which are associated in advance by the alarm device 100-1, but are associated in advance. The abnormality may be determined based on the temperature abnormality detection of the three temperature measurement chips 10. In this case, the alarm device 100-1 detects whether or not the AND condition of each temperature abnormality detection is satisfied from the state of the three temperature abnormality detection flags set by the temperature abnormality detected by the three temperature measurement chips 10. Accumulation is started when an AND condition in which all three temperature abnormality detection flags are set is established, and it is determined that the AND condition is established for a predetermined accumulation time ΔT.

[Other Embodiments of Temperature Measuring Chip]
FIG. 9 is an explanatory view showing another embodiment of the temperature measurement chip according to the present invention. In the present embodiment, a temperature detecting element 36 (for example, a thermistor) that protrudes from the upper portion of the cover 18 of the temperature measuring chip 10 to form a cage-like protective frame 64 and has a lead terminal connected and fixed to the circuit board 22 in the housing. ) Is disposed inside the space surrounded by the protective frame 64, and the temperature of the installation space can be efficiently measured while the temperature detecting element 36 is exposed to the outside air and protected from external impacts.

  In order to efficiently measure the temperature of the space in which the temperature measuring chip 10 is arranged, for example, a heat collecting plate may be arranged outside the cover 18 and the temperature detecting element 36 may be provided there.

  FIG. 10 is an explanatory view showing another embodiment of the temperature measuring chip according to the present invention in a sectional structure. In the present embodiment, the temperature detection element 36 is provided on the base 20 side. A heat transfer member 66 using a metal having a high thermal conductivity is arranged on the base 20 with its contact surface exposed to the outside, and a lead terminal is connected and fixed to the circuit board 22 in a recess formed inside the heat transfer member 66. The temperature detecting element 36 is accommodated and fixed using an adhesive 68 or the like in a state where the temperature detecting element 36 is in thermal contact with the heat transfer member 66.

  A mounting sheet 34 using a magnet sheet or an adhesive sheet is provided on the outer surface of the base 20 on which the heat transfer member 66 is disposed. The other structure is basically the same as that of the embodiment of FIG.

  According to the embodiment of FIG. 10, when the temperature measurement chip 10 is arranged in a device or a place to be monitored, the heat transfer member 66 provided on the base 20 directly contacts the monitor target and heats it. The temperature can be efficiently transmitted to the temperature detection element 36, and the temperature detection sensitivity can be increased.

  FIG. 11 is an explanatory view showing another embodiment of the temperature measuring chip in the present invention. In the present embodiment, the signal line 70 is pulled out from the side surface of the cover 18, the temperature detection element 36 is provided at the tip of the signal line 70, and the mounting pad 72 is provided on the temperature detection element 36. As the attachment pad 72, an adhesive sheet or the like can be used in the same manner as the attachment sheet 34. A mounting sheet 34 is provided on the outer surface of the base 20. The other structure is basically the same as that of the embodiment of FIG.

  According to the embodiment of FIG. 11, the temperature can be acquired by attaching the temperature detection element 36 using the attachment pad 72 at a place away from the temperature measuring chip 10, and the device or place to be monitored can be obtained. Appropriate placement according to the situation is possible.

FIG. 12 is an explanatory view showing another embodiment of the temperature measuring chip in the present invention. In the present embodiment, the signal line 70 is pulled out from the side surface of the cover 18 in the same manner as in the embodiment of FIG. 10, but a probe 74 having a sharp end is provided at the end of the signal line 70. A temperature detecting element 36 is provided at the tip of the head. The other structure is basically the same as that of the embodiment of FIG.

  According to such an embodiment of FIG. 12, the temperature detecting element 36 can be positioned by inserting the probe 74 in a place away from the temperature measuring chip 10, and for example, the temperature inside the monitoring target can be acquired. Appropriate placement according to the situation of the target equipment and location is possible.

[Modification of the present invention]
(Abnormality judgment)
In the above embodiment, an AND condition having a temperature abnormality detected by a plurality of temperature measuring chips associated in advance is established and accumulation is started, and the AND condition is established for a predetermined accumulation time. However, if an AND condition with a temperature abnormality is established, a fire prediction warning is output when a temperature abnormality AND condition is satisfied, and then the AND condition continues to be established over a predetermined accumulation time. In such a case, it may be determined that an abnormality has occurred (an abnormality is confirmed) and an abnormality alarm may be output.

(Communication protocol)
In each of the above embodiments, communication between the alarm device and the temperature measurement chip is performed according to the first communication protocol, and communication between the alarm devices is performed according to the second communication protocol. For example, another channel may be used. If it does in this way, it is not necessary to provide a 1st communication part and a 2nd communication part in an alarm device, and a structure can be simplified as one communication part.

(Correspondence between alarm device and temperature measurement chip)
In each of the above embodiments, a plurality of alarm systems are configured by assigning temperature measurement chips to all alarm devices. However, an alarm system only for alarm devices without assignment of temperature measurement chips is provided, and other alarm systems are provided. It is also possible to receive only the abnormal alarm by receiving the abnormal forecast interlocking signal and / or the abnormal interlocking signal from the alarm device of the alarm system. Moreover, not only a temperature measurement chip but also a smoke measurement chip can be applied.

(Communication form)
In the above embodiment, each communication is wireless. However, any part or all of the communication may be wired communication.

(Applications other than housing)
The above embodiment can be applied not only to residential use but also to monitoring abnormalities in various uses such as buildings and offices.

(Other)
The present invention is not limited to the above-described embodiments, includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above-described embodiments.

10-11 to 10-44: temperature measurement chip 36: temperature detection element 48: temperature measurement control unit 50: communication unit 100-1 to 100-4: alarm device 102: alarm control unit 104: first communication unit 108: first 2 Communication unit 112: Notification unit 114: Operation unit

Claims (5)

A plurality of temperature measurement means arranged in a predetermined local area, observing the temperature of the observation point and transmitting a temperature measurement signal including the temperature indicated by the temperature observation result;
A threshold temperature for determining a temperature abnormality is set for each temperature measurement unit in accordance with an arrangement location of the plurality of temperature measurement units, and a pattern in which at least two of the plurality of temperature measurement units are associated with each other is set in advance. Or alarm means for determining an abnormality based on the temperature of the temperature measurement signal received from a plurality of temperature measurement means associated with any one of the registered patterns and the threshold temperature and outputting an abnormality alarm; ,
With
The alarm means includes
As the threshold temperature, at least a first threshold temperature and a second threshold temperature are registered, and as one of the patterns, a first temperature measuring unit and at least a second temperature measuring unit are associated with each other. Pattern is registered,
The first threshold temperature is within a range in which the temperature measurement means arranged in the vicinity of the heat source using device or the heat source using device does not detect a temperature change due to daily use of the heat source using device as abnormal. Set higher than the threshold temperature,
The second threshold temperature is not detected by the temperature measurement means arranged in the vicinity of the non-heat source using equipment and place that are likely to be a fire source or in the vicinity thereof. The range is set lower than the first threshold temperature,
The first temperature measuring means is disposed in the heat source using device,
The alarm system, wherein the second temperature measuring means is arranged closer to the heat source using device than other temperature measuring means not associated with the first pattern.
The alarm system according to claim 1, wherein
The alarm means determines that the temperature is abnormal when the threshold temperature is set lower than a predetermined abnormality determination temperature and the temperature of the temperature measurement signal received from the plurality of associated temperature measurement means is equal to or higher than the threshold temperature. An alarm system that outputs an abnormality alarm.
2. The alarm system according to claim 1 , wherein the alarm unit sets a predetermined accumulation time when temperature abnormality of the temperature of the temperature measurement signal received from the plurality of associated temperature measurement units is detected, and An alarm system characterized in that, when the temperature abnormality continues to be detected during the accumulation time, the abnormality is determined and an abnormality alarm is output.
2. The alarm system according to claim 1 , wherein the alarm means has different threshold temperatures set corresponding to the plurality of associated temperature measuring means.
  2. The alarm system according to claim 1, wherein the alarm means outputs an abnormality alarm when it is determined that an abnormality has occurred based on temperature abnormality detection of a temperature measurement signal received from the plurality of associated temperature measurement means. At the same time, an abnormal interlock signal is transmitted to the alarm means of another alarm system to output an abnormal alarm, and when an abnormal interlock signal is received from the alarm means of another alarm system, an abnormal alarm indicating the interlock destination is output. An alarm system characterized by that.

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