JP2021030770A - Temperature monitoring sensor unit and monitoring system - Google Patents

Abstract

To promptly recognize an abnormal rise of temperature in a connection portion of a return feeder, in a power-saving manner and without requiring manpower.SOLUTION: A temperature monitoring sensor unit 1 comprises: a detection section 3; a transmission section 4; a control section 5; and a power source section 6. The detection section 3 is attached to a connection portion 21 of a return feeder 2. The transmission section 4 wirelessly transmits information. The control section 5 receives, as input, a result of detection performed by the detection section 3, and controls the transmission section 4. The power source section 6 supplies electric power to the transmission section 4 and the control section 5. The detection section 3 mechanically detects that a temperature T of the connection portion 21 has reached a predetermined threshold temperature Ts or more, and the detection result changes from a non-detected state s0 to a detected state s1. The detection section 3 mechanically holds the detected state s1. The control section 5 refers to a result of detection performed by the detection section 3, at a prescribed monitoring cycle, and when the detection result is in the detected state s1, the control section 5 causes the transmission section 4 to wirelessly transmit the detection result.SELECTED DRAWING: Figure 2

Description

The present invention relates to a temperature monitoring sensor unit for monitoring the temperature of the connection portion of the electric wire, and a monitoring system including the temperature monitoring sensor unit.

Electric railways are equipped with electric wires. A power line is an overhead wire that is erected in parallel with the train line or installed in parallel with it to supply electricity to the trolley line or increase the effective cross-sectional area of the train line (non-conducting line). See Patent Document 1). The electric wire is a metal stranded wire. The connection portion of the wire is mechanically and electrically connected by compressing and gripping the ends of the wire by a metal fitting called a connecting pipe (sleeve). For this reason, the connection part of the wire is also called the compression part of the wire. Since a large current flows through the wire, if the electrical resistance of the connection of the wire is high for some reason, it may overheat due to Joule heat, leading to disconnection. For this reason, a temperature indicator label (thermo label) is attached to the connecting pipe, and an inspection is carried out to regularly visually check for discoloration of the temperature indicator label. However, it cannot be said that the temperature indicating label has excellent weather resistance. In addition, visual inspection of the temperature indicator label requires manpower. Furthermore, even if the temperature label is discolored, it is not known that the temperature label has been discolored until the next inspection time.

An abnormal heat generation detection device is known in which a heat sensor made of a shape memory alloy is provided at a connection portion of an electric wire so that deformation of the shape memory alloy due to abnormal heat generation (generated heat load) at the connection portion can be visually detected (for example). , Patent Document 1). However, when such an abnormal heat generation detection device is used, it is necessary to visually confirm the presence or absence of deformation of the shape memory alloy, which requires manpower.

Further, there is known an overheat display device in which an overheat display plate is hung with a string inside a case having a metal member having a shape memory effect on the bottom surface (see Patent Document 2). However, when such a superheat display device is used, it is necessary to visually check whether or not the superheat display board is hung, which requires manpower.

Further, there is known a temperature monitoring method in which a shape memory alloy is wound around a compression connection tube and changes in coil pitch before and after heating are visually captured by a telescope from a distance (see Patent Document 3). However, such a temperature monitoring method requires manual labor because it is necessary to visually grasp the change in the coil pitch.

Further, a temperature control device for photographing a temperature indicator label while moving by a self-propelled machine is known (see Patent Document 4). However, since such a temperature control device has a self-propelled machine, the device becomes large-scale. Further, even if the temperature indicator label is discolored, it is not known that the temperature indicator label is discolored until the self-propelled machine of the temperature control device is run and the temperature indicator label is photographed.

Further, there is known a train track monitoring system that includes a temperature sensor that detects the temperature of a connection portion and writes the detected monitoring information in an ID tag (see Patent Document 5). In this train track monitoring system, the monitoring information written in the ID tag is read by an ID tag reader attached to the train or an ID tag reader carried by an inspection worker. Therefore, in such a train track monitoring system, it is necessary to operate many ID tag readers in order to quickly read the detected monitoring information after detecting an abnormal temperature, which makes the system large-scale.

Therefore, the inventor of the present application has studied a device that detects the temperature of the connection portion of the electric wire with a temperature sensor and wirelessly transmits the detected temperature in real time. However, since a high voltage is applied to the electric wire to which the device is attached, it is difficult to supply sufficient power for the operation of the device for a long time. Then, even if an abnormal temperature rise occurs at the connection portion of the electric wire when the power for operation is insufficient, the device cannot detect it.

Japanese Unexamined Patent Publication No. 63-180533 Japanese Unexamined Patent Publication No. 7-27632 Japanese Unexamined Patent Publication No. 2001-167860 Japanese Unexamined Patent Publication No. 10-115560 Japanese Unexamined Patent Publication No. 2006-131173

JIS E2001: 2002 "Train track terminology"

The present invention solves the above-mentioned problems, and an object of the present invention is to quickly grasp an abnormal temperature rise of a connection portion of an electric wire without manpower, with power saving.

The temperature monitoring sensor unit of the present invention is for monitoring the temperature of the connection portion of the wire, and includes a detection unit attached to the connection portion of the wire, a transmission unit that wirelessly transmits information, and the detection unit. The detection unit includes a control unit that controls the transmission unit and a power supply unit that supplies power to the transmission unit and the control unit, and the detection unit has a temperature of the connection unit equal to or higher than a predetermined threshold temperature. The detection result changes from the non-detection state to the detection state, and the detection state is mechanically held, and the control unit refers to the detection result in a predetermined monitoring cycle. Then, when the detection result is in the detection state, the detection result is wirelessly transmitted to the transmission unit.

In this temperature monitoring sensor unit, it is preferable that the control unit refers to the detection result in a predetermined operation confirmation cycle longer than the monitoring cycle, and causes the transmission unit to wirelessly transmit the detection result.

In this temperature monitoring sensor unit, the detection unit has a plurality of temperature detection sensors, and each of the temperature detection sensors mechanically indicates that the temperature of the attachment portion at the connection portion is equal to or higher than the threshold temperature. When the detection result changes from the non-detection state to the detection state, the detection state is mechanically held, and the detection result of at least one temperature detection sensor is the detection state, the detection result by the detection unit. Is preferably in the detection state.

In this temperature monitoring sensor unit, the temperature detection sensor has a bimetal for detecting the temperature and an electric contact for outputting the detection result, and the contact state of the electric contact is equal to or higher than the threshold temperature due to the deformation of the bimetal. Is changed, the changed contact state is mechanically held, and the held contact state can be manually restored.

In this temperature monitoring sensor unit, it is preferable that the power supply unit includes a solar cell and a power storage device that is charged by the solar cell and supplies electric power by electric discharge.

In this temperature monitoring sensor unit, the power storage device is preferably an electric double layer capacitor.

In this temperature monitoring sensor unit, the power supply unit may have a primary battery.

The monitoring system of the present invention is a system including a temperature monitoring sensor unit, in which a receiving unit that receives a detection result wirelessly transmitted by the temperature monitoring sensor unit and a monitoring unit that receives the detection result received by the receiving unit are transmitted. The monitoring device further includes a device, and is characterized in that the monitoring device includes a notification unit that notifies an alarm when the transmitted detection result is in the detection state, and a storage unit that stores the transmitted detection result.

According to the temperature monitoring sensor unit of the present invention, the detection unit mechanically detects that the temperature of the connection portion exceeds the threshold temperature and mechanically holds the detection state, so that power is required for the detection. do not do. The control unit refers to the detection result in the monitoring cycle, and when the detection result is in the detection state, the control unit wirelessly transmits the detection result to the transmission unit. Yes, by setting the monitoring cycle, it is possible to quickly grasp the detection state of an abnormal temperature rise at the connection of the wireless wire. According to the monitoring system of the present invention, the monitoring device has a notification unit that notifies an alarm when the transmitted detection result is in the detection state, so that the user of this system can use the abnormal temperature of the connection portion of the electric wire. The rise can be grasped quickly.

The perspective view of the temperature monitoring sensor unit which concerns on one Embodiment of this invention. Block configuration diagram of the temperature monitoring sensor unit. The state transition diagram of the detection unit of the temperature monitoring sensor unit and the temperature detection sensor. The block block diagram of the monitoring system which concerns on one Embodiment of this invention. The operation explanatory view of the temperature monitoring sensor unit when the sunshine condition is good. An operation explanatory view of the temperature monitoring sensor unit when the sunshine condition is not good.

The temperature monitoring sensor unit according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the temperature monitoring sensor unit 1 is a device for monitoring the temperature of the connecting portion 21 of the electric wire 2. As shown in FIG. 2, the temperature monitoring sensor unit 1 includes a detection unit 3, a transmission unit 4, a control unit 5, and a power supply unit 6. The detection unit 3 is attached to the connection unit 21 of the electric wire 2. The transmission unit 4 wirelessly transmits information. The control unit 5 inputs the detection result by the detection unit 3 and controls the transmission unit 4. The power supply unit 6 supplies electric power to the transmission unit 4 and the control unit 5.

As shown in FIG. 3 (state transition diagram), the detection unit 3 mechanically detects that the temperature T of the connection unit 21 exceeds a predetermined threshold temperature Ts, and detects the detection result from the non-detection state s0. It changes to the state s1 (event e01). The detection unit 3 mechanically holds the detection state s1 (event e11). The threshold temperature Ts is, for example, 70 ° C., which is substantially the same as the discoloration temperature of the conventional temperature indicating label.

The control unit 5 refers to the detection result by the detection unit 3 in a predetermined monitoring cycle, and when the detection result is in the detection state s1, causes the transmission unit 4 to wirelessly transmit the detection result (see FIG. 2). The monitoring cycle is set to, for example, 10 minutes.

The control unit 5 refers to the detection result by the detection unit 3 in a predetermined operation confirmation cycle longer than the monitoring cycle, and causes the transmission unit 4 to wirelessly transmit the detection result. The operation check cycle is, for example, 24 hours (once a day).

In the present embodiment, the detection unit 3 has a plurality of temperature detection sensors 3a, 3b, 3c, and 3d (see FIGS. 1 and 2). The state transition diagram of each of the temperature detection sensors 3a, 3b, 3c, and 3d is the same as the state transition diagram of the detection unit 3 (see FIG. 3). That is, each of the temperature detection sensors 3a, 3b, 3c, and 3d mechanically detects that the temperature T of the attachment portion at the connection portion 21 is equal to or higher than the threshold temperature Ts, and the detection result is detected from the non-detection state s0. While changing to the state s1 (event e01), the detection state s1 is mechanically held (event e11). The detection result of the detection unit 3 is the logical sum (OR) of the detection results of the temperature detection sensors 3a, 3b, 3c, and 3d. That is, when the detection result of at least one temperature detection sensor 3a, 3b, 3c, 3d is the detection state s1, the detection result by the detection unit 3 is the detection state s1. The detection unit 3 may have one temperature detection sensor.

In the present embodiment, the temperature detection sensors 3a, 3b, 3c, and 3d have a bimetal for detecting the temperature and an electric contact for outputting the detection result (not shown). In the temperature detection sensors 3a, 3b, 3c, and 3d, the contact state of the electrical contact changes at the threshold temperature Ts or higher due to the deformation of the bimetal (event e01 in FIG. 3), and the changed contact state is mechanically held (event e01 in FIG. 3). Event e11), the held contact state can be manually restored (event e10). In the present embodiment, the electrical contacts of the temperature detection sensors 3a, 3b, 3c, and 3d have the closed state as the contact state of the non-detection state s0 and the open state of the detection state s1. In the detection unit 3, the electrical contacts of the temperature detection sensors 3a, 3b, 3c, and 3d are connected in series, and the detection result of at least one temperature detection sensor 3a, 3b, 3c, and 3d is in the detection state s1 (open state). At a certain time, the detection result by the detection unit 3 becomes the detection state s1 (open state) (logical sum). The control unit 5 refers to the detection result (non-detection state s0 or detection state s1) by checking the presence or absence of continuity of the detection unit 3. The detection results of the plurality of temperature detection sensors 3a, 3b, 3c, and 3d may be input to the control unit 5, and the logical sum of the detection results may be created by the processing in the control unit 5.

The power supply unit 6 includes a solar cell 61 and a power storage device 62 (see FIG. 2). The power storage device 62 is charged by the solar cell 61 and supplies electric power by discharging. In this embodiment, the power storage device 62 is an electric double layer capacitor. The power supply unit 6 has a power management circuit 63 in addition to the solar cell 61 and the power storage device 62. The power management circuit 63 has functions such as charge / discharge control of the power storage device 62 and on / off of the output current. The power supply unit 6 may have a primary battery 64. The primary battery 64 is, for example, several AA batteries.

A monitoring system 10 having a temperature monitoring sensor unit 1 will be described with reference to FIG. The monitoring system 10 includes a temperature monitoring sensor unit 1, a receiving unit 8, and a monitoring device 9. The number of the temperature monitoring sensor unit 1 and the receiving unit 8 is not limited. The receiving unit 8 receives the detection result wirelessly transmitted by the temperature monitoring sensor unit 1. The monitoring device 9 transmits the detection result received by the receiving unit 8. The monitoring device 9 has a notification unit 91 and a storage unit 92. The notification unit 91 notifies an alarm when the transmitted detection result is the detection state s1. The storage unit 92 stores the transmitted detection result.

In the monitoring system 10, when there are a plurality of temperature monitoring sensor units 1, the temperature monitoring sensor unit 1 adds information (ID) that uniquely identifies the temperature monitoring sensor unit 1 and transmits the detection result. When the temperature monitoring sensor unit 1 and the receiving unit 8 are one-to-one, the receiving unit 8 may add the ID of the temperature monitoring sensor unit 1.

The receiving unit 8 is provided in a place where the voltage is not pressurized, for example, a railroad crossing, a place where the voltage is not applied in a feeder substation, or the like. The detection result received by the receiving unit 8 is transmitted to the monitoring device 9 by wire or wirelessly. The monitoring device 9 is installed at, for example, a command center.

The monitoring device 9 is a computer having a CPU, a memory, an input / output interface, and the like. The notification unit 91 is a computer display or speaker. The storage unit 92 is a database having a storage device.

The temperature monitoring sensor unit 1 will be described in more detail. In this embodiment, the detection unit 3 has four temperature detection sensors 3a, 3b, 3c, and 3d (see FIG. 1). The mounting locations of the temperature detection sensors 3a, 3b, 3c, and 3d are, for example, substantially the same as the mounting locations of the conventional temperature indicating label. In the connection portion 21 of the wire wire 2, the connection pipe 22 is connected by compressing the two wire wires 2a and 2b. The temperature detection sensor 3a is attached to a portion of the connecting pipe 22 where one of the wires 2a is compressed. The temperature detection sensor 3b is attached to a wire wire 2a in the vicinity thereof. The temperature detection sensor 3c is attached to the portion of the connecting pipe 22 where the other wire 2b is compressed. The temperature detection sensor 3d is attached to a wire wire 2b in the vicinity thereof.

The temperature detection mechanism of the temperature detection sensors 3a, 3b, 3c, and 3d is a bimetal non-energized type and does not require electric power to detect the temperature. Such temperature detection sensors 3a, 3b, 3c, and 3d are, for example, manual return type thermostats. The temperature detection sensors 3a, 3b, 3c, and 3d may be thermal fuses.

The transmission unit 4, the control unit 5, and the power supply unit 6 are housed in a housing 7 having outdoor weather resistance. The housing 7 is attached to the connecting pipe 22. The transmission unit 4 has a wireless module and an antenna 41. The wireless module is housed in the housing 7. The antenna 41 projects from the housing 7. The power supply unit 6 includes a solar cell 61 and the like. The light to the solar cell 61 is incident from the window portion 71 provided in the housing 7.

The communication method of the transmission unit 4 is a kind of wireless communication method (LPWA: Low Power, Wide Area) that covers a wide area with low power consumption (for example, "LoRa" (registered trademark) standard).

The control unit 5 has a CPU and a memory, and operates by executing a program (see FIG. 2).

The temperature monitoring sensor unit 1 is exposed to direct sunlight and may be heated by the heat generated by the connection portion 21 of the electric wire 2. Therefore, in the present embodiment, an electric double layer capacitor is used as the power storage device 62 of the power supply unit 6 instead of the lithium ion battery in order to prevent thermal runaway. An electric double layer capacitor, also called an electric double layer capacitor, is a capacitor that utilizes the charge storage action of an electric double layer formed on the interface between two different substances (JIS C 5602-1986 "Passive component term for electronic equipment". See number 3421).

The power management circuit 63 of the power supply unit 6 is configured by using a power management IC.

The operation of the temperature monitoring sensor unit 1 configured as described above will be described with reference to FIGS. 5 and 6. In FIGS. 5 and 6, the horizontal axis is the time t, the vertical axis on the left side is the current I supplied by the power supply unit 6, and the vertical axis on the right side is the temperature T of the connection portion 21 of the wire line 2. FIG. 5 shows the operation of the temperature monitoring sensor unit 1 when the sunshine conditions and the like are good. As described above, the control unit 5 refers to the detection result by the detection unit 3 in a predetermined monitoring cycle (for example, 10 minutes).

As shown in FIG. 5, when the temperature T of the connection portion 21 of the electric wire 2 becomes equal to or higher than the threshold temperature Ts, the detection unit 3 mechanically detects that the temperature T of the connection portion 21 exceeds the threshold temperature Ts. Then, the detection result changes from the non-detection state s0 to the detection state s1. The detection state s1 is mechanically held. The control unit 5 refers to the detection result of the detection unit 3 at the next timing (time ta) in the monitoring cycle. Since the detection result is the detection state s1, the control unit 5 wirelessly transmits the detection result to the transmission unit 4. This is an abnormality detection operation by the temperature monitoring sensor unit 1.

Since the temperature monitoring sensor unit 1 holds the detection state s1, it may be omitted to wirelessly transmit the detection result again in the monitoring cycle after the detection result in the detection state s1 is wirelessly transmitted.

The temperature monitoring sensor unit 1 wirelessly transmits the detection result in the operation confirmation cycle regardless of whether the detection result is the non-detection state s0 or the detection state s1 for the operation confirmation. The control unit 5 wirelessly transmits the detection result by the detection unit 3 to the transmission unit 4 at the timing of the operation confirmation cycle (for example, 24 hours) (time tb, for example, 6:00). After the temperature monitoring sensor unit 1 wirelessly transmits the detection result in the detection state s1, it may be omitted to wirelessly transmit the detection result in the operation confirmation cycle.

In the temperature monitoring sensor unit 1, when the detection result is wirelessly transmitted, the current I supplied by the power supply unit 6 becomes large. At night, the current I is supplied by the power storage device 62.

FIG. 6 shows the operation of the temperature monitoring sensor unit 1 when the sunshine conditions and the like are not good. In FIG. 6, it is assumed that the sunshine starts at 6 o'clock and the sunshine ends at 18:00. The reference of the detection result of the detection unit 3 by the control unit 5 is described as "measurement", and the wireless transmission of the detection result by the transmission unit 4 is described as "transmission". If the power supply unit 6 cannot supply sufficient current I for measurement and transmission in each monitoring cycle, such as when it rains or becomes cloudy, the control unit 5 stops operating (time 0:00 to 6:00, etc.). .. When the amount of power generated by the solar cell 61 is not sufficient (time 18:00 to 6:00 the next day), such as at night, when the temperature T of the connection portion 21 of the electric wire 2 becomes equal to or higher than the threshold temperature Ts (for example, 24:00), Since it is mechanically detected and held, the detection result is transmitted at the next timing (6:00) in the operation confirmation cycle. When the amount of residual electricity of the power storage device 62 decreases, the temperature monitoring sensor unit 1 measures and transmits after the power storage device 62 is charged until the detection result can be transmitted. A primary battery 64 may be provided in the power supply unit 6 as an auxiliary power source, and the temperature monitoring sensor unit 1 may be operated for 24 hours.

As described above, according to the temperature monitoring sensor unit 1 according to the present embodiment, the detection unit 3 mechanically detects that the temperature T of the connection unit 21 is equal to or higher than the threshold temperature Ts, and mechanically determines the detection state s1. Since it is held at, no power is required for detection. The control unit 5 refers to the detection result in the monitoring cycle, and when the detection result is in the detection state s1, causes the transmission unit 4 to wirelessly transmit the detection result. It is power saving, and by setting the monitoring cycle, it is possible to quickly grasp the detection state s1 which is an abnormal temperature rise of the connection portion 21 of the wire 2. Further, since the temperature monitoring sensor unit 1 is power-saving, its power supply unit 6 can be miniaturized and can be easily attached to the electric wire 2.

The control unit 5 refers to the detection result in a predetermined operation confirmation cycle longer than the monitoring cycle, and wirelessly transmits the detection result to the transmission unit 4, so that it is confirmed whether or not the temperature monitoring sensor unit 1 is operating. Can be done.

Since the detection unit 3 has a plurality of temperature detection sensors 3a, 3b, 3c, and 3d, it is possible to more reliably grasp the abnormal temperature rise of the connection portion 21 of the electric wire 2.

Since the held contact state of the temperature detection sensors 3a, 3b, 3c, and 3d can be manually restored, the temperature detection sensors 3a, 3b, 3c, and 3d that have changed to the detection state s1 are returned to the non-detection state s0. Can be reused.

Since the power supply unit 6 includes the solar cell 61 and the power storage device 62, it is possible to supply electric power for operation even when the temperature monitoring sensor unit 1 is located at a high voltage location.

Since the power storage device 62 is an electric double layer capacitor, thermal runaway can be prevented.

Since the power supply unit 6 has the primary battery 64, electric power can be supplied even when the sunshine conditions are not good. In addition, primary batteries have a low risk of thermal runaway.

According to the monitoring system 10 according to the present embodiment, the monitoring device 9 has a notification unit 91 that notifies an alarm when the transmitted detection result is the detection state s1, so that the user of this system can use the wire 2 The abnormal temperature rise of the connection portion 21 of the above can be quickly grasped (see FIG. 4). Further, since the monitoring device 9 has a storage unit 92 for accumulating the transmitted detection result, the accumulated detection result can be used for analysis or the like.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without changing the gist of the invention. For example, the power supply unit 6 may have a primary battery 64 without the solar cell 61 and the power storage device 62 (see FIG. 2). In that case, when the temperature monitoring sensor unit 1 stops wirelessly transmitting the detection result in the operation confirmation cycle, the primary battery 64 (dry battery) is replaced as post-maintenance or as preventive maintenance before that. Since the temperature monitoring sensor unit 1 saves power, the battery lasts for a long time even if a dry battery is used as the primary battery 64.

1 Temperature monitoring sensor unit 3 Detection unit 3a, 3b, 3c, 3d Temperature detection sensor 4 Transmission unit 5 Control unit 6 Power supply unit 61 Solar cell 62 Storage device 64 Temporary battery 8 Reception unit 9 Monitoring device 91 Notification unit 92 Storage unit 10 Monitoring System s0 Undetected state s1 Detected state

Claims (8)

It is a temperature monitoring sensor unit for monitoring the temperature of the connection part of the electric wire.
The detector attached to the connection part of the electric wire and
A transmitter that wirelessly transmits information and
A control unit that inputs the detection result by the detection unit and controls the transmission unit,
It is provided with a power supply unit that supplies electric power to the transmission unit and the control unit.
The detection unit mechanically detects that the temperature of the connection unit exceeds a predetermined threshold temperature, changes the detection result from the non-detection state to the detection state, and mechanically holds the detection state. ,
The control unit refers to the detection result in a predetermined monitoring cycle, and when the detection result is in the detection state, the temperature monitoring sensor unit wirelessly transmits the detection result to the transmission unit. The temperature monitoring sensor unit according to claim 1, wherein the control unit refers to the detection result in a predetermined operation confirmation cycle longer than the monitoring cycle, and causes the transmission unit to wirelessly transmit the detection result. The detection unit has a plurality of temperature detection sensors and has a plurality of temperature detection sensors.
Each of the temperature detection sensors mechanically detects that the temperature of the attachment point at the connection portion exceeds the threshold temperature, and the detection result changes from the non-detection state to the detection state, and the detection state is changed. Hold mechanically
The temperature monitoring sensor unit according to claim 1 or 2, wherein when the detection result of at least one of the temperature detection sensors is in the detection state, the detection result by the detection unit is in the detection state. The temperature detection sensor has a bimetal for detecting the temperature and an electric contact for outputting the detection result, and the contact state of the electric contact changes at the threshold temperature or higher due to the deformation of the bimetal, and the change thereof. The temperature monitoring sensor unit according to claim 3, wherein the contact state is mechanically held, and the held contact state can be manually restored. The temperature monitoring sensor according to any one of claims 1 to 4, wherein the power supply unit includes a solar cell and a power storage device that is charged by the solar cell and supplies electric power by electric discharge. unit. The temperature monitoring sensor unit according to claim 5, wherein the power storage device is an electric double layer capacitor. The temperature monitoring sensor unit according to any one of claims 1 to 6, wherein the power supply unit includes a primary battery. A monitoring device including the temperature monitoring sensor unit according to any one of claims 1 to 7.
A receiving unit that receives the detection result wirelessly transmitted by the temperature monitoring sensor unit, and
A monitoring device for transmitting the detection result received by the receiving unit is further provided.
The monitoring device is a monitoring system including a notification unit that notifies an alarm when a transmitted detection result is in a detection state, and a storage unit that stores the transmitted detection result.

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