JP6274591B2 - Wireless communication terminal and wireless communication system - Google Patents

Description

  The present invention relates to a wireless communication terminal and a wireless communication system.

Wireless communication terminals are required to be miniaturized, and higher communication speeds and higher performances are progressing with second generation, third generation, and fourth generation. Wireless communication terminals reduce power consumption, but heat generation continues to increase with higher communication speed and higher performance.
Since the heat generated in the wireless communication terminal is trapped in the device and the temperature inside the device rises, various techniques have been proposed to suppress the temperature rise.

FIG. 5 is a block diagram for explaining a conventional wireless communication terminal.
The wireless communication terminal 11 includes an antenna 3, a wireless transmission / reception unit 4, a wireless transmission / reception control unit 5, a wired transmission / reception unit 6, a temperature monitoring unit 7, and a wired transmission / reception control unit 8.
The external device 2 connected to the wireless communication terminal 11 includes a wired transmission / reception unit 21, a wired transmission / reception control unit 22, and an information collection unit 23.
The external device 2 is, for example, a vending machine, a smart meter, and the like, and information such as the number of products sold and the amount of electricity used collected by the information collection unit 23 is transmitted from the wired transmission / reception unit 21 based on the control of the wired transmission / reception control unit 22. Send to the wireless communication terminal 11.
The wireless communication terminal 11 receives information transmitted from the external device 2 by the wired transmission / reception unit 6 based on the control of the wired transmission / reception control unit 8, and receives the received information based on the control of the wireless transmission / reception control unit 5. 4 through the antenna 3.
The radio transmission / reception control unit 5 is, for example, when the temperature obtained from the temperature monitoring unit 7 is higher than a threshold value (for example, 70 ° C.) set in advance as a temperature guarantee range of the device. The wireless transmission / reception unit 4 stops wireless transmission. The wireless transmission / reception control unit 5 stops the wireless transmission, thereby suppressing internal heat generation and protecting the wireless communication terminal 11 from failure due to heat.

  As a prior art document, for example, in Patent Document 1, when the temperature inside the device exceeds a preset reference value, the transmission time is limited to a certain time, and the transmission is stopped after a certain time has elapsed. Then, when the temperature further rises and exceeds the next reference value, transmission is not possible at all, thereby suppressing heat generation.

Japanese Patent Laid-Open No. 04-326211

In the prior art, a method of suppressing the temperature rise by impairing information transmission, which is a function of the wireless communication terminal itself, regardless of the intention of the external device, such as the wireless communication terminal stopping transmission due to the temperature rise. It was.
An object of the present invention is to suppress an increase in the temperature of a wireless communication terminal without damaging the function of the wireless communication terminal itself in cooperation with an external device side and the wireless communication terminal.

  A wireless communication terminal of the present invention for solving the problems of the conventional example is a wireless communication terminal connected to an external device, and the wireless communication terminal includes a wireless transmission / reception unit, a wired transmission / reception unit, a wired transmission / reception control unit, and a temperature monitoring. The wired transmission / reception control unit instructs the external device to stop outputting information, decelerate the output speed, or output at regular intervals according to the temperature acquired from the temperature monitoring unit.

  The wireless communication terminal of the present invention is a wireless communication terminal connected to an external device, and the wireless communication terminal includes a wireless transmission / reception unit, a wired transmission / reception unit, a wired transmission / reception control unit, and a temperature monitoring unit, and A storage unit that temporarily stores information for wireless transmission of information from the device sequentially from the wireless transmission / reception unit, and the wired transmission / reception control unit wirelessly transmits / receives to / from the wired transmission / reception unit according to the temperature acquired from the temperature monitoring unit Instructing the output of information to be stopped, output speed reduction or constant interval output, and when the storage section exceeds a predetermined capacity relative to the storage capacity, the information output stop or output speed reduction or It is characterized by instructing output at regular intervals.

  The wireless communication terminal of the present invention is the wireless communication terminal described above, and the wired transmission / reception control unit instructs the external device to stop outputting information, reduce output speed, or output at regular intervals using a communication message. It is characterized by doing.

  The wireless communication terminal of the present invention is a wireless communication terminal connected to an external device, and the wireless communication terminal includes a wireless transmission / reception unit, a wired transmission / reception unit, a wired transmission / reception control unit, and a temperature monitoring unit, and a temperature monitoring unit Is characterized by instructing an external device to stop outputting information, decelerate the output speed, or output at regular intervals according to the detected temperature.

  The wireless communication terminal of the present invention is the wireless communication terminal described above, wherein the external device is in accordance with the temperature acquired from the temperature monitoring unit after instructing the external device to stop outputting information, decelerate the output speed, or output at regular intervals. Is directed to cancel the instruction.

  In addition, the wireless communication system of the present invention includes an external device that collects information and outputs the information to the outside by wire, and a wireless communication terminal that is wired to the external device and outputs information from the external device to the network using wireless communication The external communication device includes a wired transmission / reception unit, a wired transmission / reception control unit, and an information collection unit, and the wireless communication terminal includes a wireless transmission / reception unit, a wireless transmission / reception control unit, a wired transmission / reception unit, and a wired transmission / reception control. A wired transmission / reception control unit of the external device monitors information of the temperature monitoring unit of the wireless communication terminal under a predetermined condition, and the wireless communication terminal according to the temperature acquired from the temperature monitoring unit Control of output stop of information, output speed reduction, or constant interval output is performed.

According to the present invention, it is possible to suppress the temperature increase of the wireless communication terminal in cooperation with the external device without impairing the function of the wireless communication terminal itself.
In addition, the wireless communication terminal can reliably transmit the information output from the external device while suppressing the temperature increase of the wireless communication terminal by cooperating with the external device.

It is a block diagram for demonstrating the radio | wireless communication terminal and radio | wireless communications system which concern on one Example of this invention. It is a block diagram for demonstrating the radio | wireless communication terminal and radio | wireless communications system which concern on other one Example of this invention. 5 is a flowchart for explaining an operation of a wireless communication terminal according to an embodiment of the present invention. It is a flowchart for demonstrating operation | movement of the radio | wireless communication terminal which concerns on another one Example of this invention. It is a block diagram for demonstrating the conventional radio | wireless communication terminal and a radio | wireless communications system.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram for explaining a radio communication terminal and a radio communication system according to an embodiment of the present invention.
In FIG. 1, the wireless communication terminal 1 includes an antenna 3, a wireless transmission / reception unit 4, a wireless transmission / reception control unit 5, a wired transmission / reception unit 6, a temperature monitoring unit 7, and a wired transmission / reception control unit 8.
The wireless communication terminal 1 includes a storage unit that stores information, although not particularly illustrated.
Note that the wired transmission / reception unit 6 and the wired transmission / reception control unit 8 may be a CPU (Central Processing Unit) that combines functions into one.

The external device 2 connected to the wireless communication terminal 1 includes a wired transmission / reception unit 21, a wired transmission / reception control unit 22, and an information collection unit 23.
The external device 2 is, for example, a vending machine, a smart meter, and the like, and information such as the number of products sold and the amount of electricity used collected by the information collection unit 23 is transmitted from the wired transmission / reception unit 21 based on the control of the wired transmission / reception control unit 22. Send to the wireless communication terminal 1.

The wireless transmission / reception unit 4 transmits / receives information to / from the network side via the antenna 3 via a wireless base station (not shown). Note that the information includes a setting value for setting the wireless communication terminal 1 and the external device 2 transmitted from the network side via a wireless base station or the like.
The wireless transmission / reception control unit 5 controls transmission / reception of the wireless transmission / reception unit 4.
The wired transmission / reception unit 6 temporarily stores information sent from the external device 2 based on the control of the wired transmission / reception control unit 8 and then outputs the information to the wireless transmission / reception unit 4. The wired transmission / reception unit 6 transmits information transmitted from the network side to the external device 2 via a wireless base station or the like.
The temperature monitoring unit 7 measures the internal temperature of the wireless communication terminal 1 and outputs a temperature, a temperature alarm, and the like to the wired transmission / reception control unit 8.

FIG. 2 is a block diagram for explaining a radio communication terminal and a radio communication system according to another embodiment of the present invention.
The blocks constituting FIG. 1 are substantially the same and are given the same numbering.

Here, the difference between FIG. 2 and FIG. 1 will be described.
2 is different from FIG. 1 in that the temperature monitoring unit 7 is connected to the wired transmission / reception control unit 22 of the external device 2. Thereby, it is possible to directly output a temperature, a temperature alarm, or the like to the wired transmission / reception control unit 22 of the external device 2. Note that it is possible to output a temperature, a temperature alarm, or the like according to an instruction from the wired transmission / reception control unit 22 of the external device 2.

(Example 1) Next, operation | movement of the radio | wireless communication terminal which concerns on one Example of this invention is demonstrated using FIG.
The wireless communication terminal 1 converts an antenna 3 that transmits / receives a wireless signal, converts wired data into wireless data, transmits the data through the antenna 3, and converts wireless data received from the antenna 3 into wired data for transmission to the external device 2. Monitors the temperature in the wireless communication terminal device 1, the wireless transmission / reception unit 4 that performs, the wireless transmission / reception control unit 5 that controls whether to transmit wireless data, the wired transmission / reception unit 6 that transmits / receives wired data to / from the external device 2, And a temperature monitoring unit 7 that notifies the wired transmission / reception control unit 8 of a temperature alarm when the temperature exceeds a threshold (for example, 70 ° C.), and a buffer that is a storage unit because the wired data from the external device 2 is too fast. If the memory seems to overflow, the internal processing is busy with some processing and data processing cannot proceed, or the temperature alarm from the temperature monitoring unit 7 suppresses the temperature rise In a case, and a wired transmitting and receiving controller 8 which adjusts the flow of wired data subjected to such flow control including an output stop or output speed deceleration or constant interval information output from the external device 2 side.

The temperature alarm includes a dedicated line and a command notification method.
The wired transmission / reception control unit 8 that has received a temperature alarm from the temperature monitoring unit 7 directly instructs the external device 2 to perform flow control or the like when directly connected to the wired transmission / reception control unit 22 of the external device 2. However, even when the external device 2 and the wired transmission / reception control unit 22 are not directly connected, the wired transmission / reception control unit 8 is connected to the external device 2 via the wired transmission / reception unit 6 using a communication message or the like. It is possible to instruct flow control and the like. And the flow control by a temperature alarm etc. is notified to the external apparatus 2, and the temperature rise of a radio | wireless communication terminal can be suppressed by controlling the output of data on the external apparatus 2 side.

  In addition, the temperature monitoring unit 7 notifies the temperature alarm based on a predetermined threshold, but if the notification for canceling the temperature alarm is performed based on a threshold that is the same as or different from the predetermined threshold, If the wired transmission / reception control unit 8 indicates a temperature alarm release notification in the same manner as an instruction such as flow control, the external device 2 can return to normal data output control after the temperature alarm is released.

  That is, in the first embodiment, the wired transmission / reception control unit 8 can instruct the external device 2 to stop outputting information, decelerate the output speed, or output at regular intervals according to the temperature acquired from the temperature monitoring unit 7. In addition, the instruction to the external device 2 can be instructed directly or via a wired transmission / reception unit 6 using a communication message, and further, an instruction to cancel the instruction corresponding to the temperature alarm can be issued. It is.

(Example 2) Next, operation | movement of the radio | wireless communication terminal which concerns on one Example of this invention is demonstrated using FIG. 1 again.
The wireless communication terminal 1 converts an antenna 3 that transmits / receives a wireless signal, converts wired data into wireless data, transmits the data through the antenna 3, and converts wireless data received from the antenna 3 into wired data for transmission to the external device 2. Monitors the temperature in the wireless communication terminal device 1, the wireless transmission / reception unit 4 that performs, the wireless transmission / reception control unit 5 that controls whether to transmit wireless data, the wired transmission / reception unit 6 that transmits / receives wired data to / from the external device 2, And a temperature monitoring unit 7 that notifies the wired transmission / reception control unit 8 of a temperature alarm when the temperature exceeds a threshold (for example, 70 ° C.), and a buffer that is a storage unit because the wired data from the external device 2 is too fast. If the memory seems to overflow, the internal processing is busy with some processing and data processing cannot proceed, or the temperature alarm from the temperature monitoring unit 7 suppresses the temperature rise In some cases, the configuration is the same as that of the wired transmission / reception control unit 8 that adjusts the flow of wired data by stopping the output of information from the external device 2 side, decelerating the output speed, or performing flow control including output at regular intervals. is there.

  First, in the case of wireless transmission, there is a case where a method of storing data temporarily transmitted by the wireless communication terminal 1 and sequentially performing wireless transmission is used. Although this has not been described in detail, it goes without saying that the same method may be used in the first embodiment.

  Here, differences from the first embodiment will be described. In the first embodiment, the wired transmission / reception control unit 8 that has received a temperature alarm or the like from the temperature monitoring unit 7 instructs the external device 2 to stop the output, decelerate the output speed, or perform flow control including a constant interval output. In this embodiment, the wired transmission / reception control unit 8 that has received a temperature alarm from the temperature monitoring unit 7 first stops the output of data to the wireless transmission / reception unit 4 or reduces the output speed to the wired transmission / reception unit 6. Instructs flow control including output at regular intervals. Thereby, the temperature rise of a radio | wireless communication terminal can be suppressed similarly to Example 1. FIG.

  However, in the above method, the temperature increase of the wireless communication terminal 1 can be suppressed. However, since new information to be transmitted arrives sequentially from the external device 2, the buffer memory as a storage unit temporarily transmits the information. Even if data to be stored is stored, it is assumed that it will eventually overflow. In this case, as in the prior art, transmission to the wireless communication terminal 1 becomes impossible regardless of the intention on the external device 2 side.

  Here, the wired transmission / reception control unit 8 instructs the wired transmission / reception unit 6 to stop outputting information to the wireless transmission / reception unit, to reduce the output speed, or to output at regular intervals according to the temperature acquired from the temperature monitoring unit 7, and to store it later. When the unit exceeds a predetermined capacity with respect to the storage capacity, the external device 2 is instructed to stop outputting information, decelerate the output speed, or output at regular intervals, as in the first embodiment.

  Further, as in the first embodiment, the temperature monitoring unit 7 notifies the temperature alarm based on a predetermined threshold value. However, the temperature monitoring unit 7 notifies the temperature alarm unit 7 to cancel the temperature alarm based on the same or different threshold value as described above. By doing so, if the wired transmission / reception control unit 8 instructs the temperature alarm release notification in the same way as an instruction such as flow control, the external device 2 can return to the normal data output control after the temperature alarm is released. it can.

(Example 3) Next, operation | movement of the radio | wireless communication terminal which concerns on one Example of this invention is demonstrated using FIG.
The wireless communication terminal 1 converts an antenna 3 that transmits / receives a wireless signal, converts wired data into wireless data, transmits the data through the antenna 3, and converts wireless data received from the antenna 3 into wired data for transmission to the external device 2. Monitors the temperature in the wireless communication terminal device 1, the wireless transmission / reception unit 4 that performs, the wireless transmission / reception control unit 5 that controls whether to transmit wireless data, the wired transmission / reception unit 6 that transmits / receives wired data to / from the external device 2, The temperature monitoring unit 7 that notifies the external device 2 and the wired transmission / reception control unit 8 of a temperature alarm when the temperature exceeds a threshold value (for example, 70 ° C.), and the wired data from the external device 2 are stored too fast. If the buffer memory that is part of the unit is likely to overflow, if the internal processing is busy with some processing and data processing cannot proceed, or if the temperature alarm from the temperature monitoring unit 7 In the case where it is desired to suppress the output, the transmission / reception control unit 8 is configured to adjust the flow of wired data by performing flow control including output stop, output speed reduction, or constant interval output from the external device 2 side Are almost the same.

  Here, differences from the first embodiment will be described. In the first embodiment, the wired transmission / reception control unit 8 that has received a temperature alarm or the like from the temperature monitoring unit 7 instructs the external device 2 to stop the output, decelerate the output speed, or perform flow control including a constant interval output. In the present embodiment, the temperature monitoring unit 7 is connected so that a temperature alarm is directly notified to the external device 2. As a result, the temperature monitoring unit 7 can instruct the external device 2 to stop outputting information, decelerate the output speed, or output at regular intervals as a temperature alarm.

  Further, as in the first embodiment, the temperature monitoring unit 7 notifies the temperature alarm based on a predetermined threshold value. However, the temperature monitoring unit 7 notifies the temperature alarm unit 7 to cancel the temperature alarm based on the same or different threshold value as described above. By doing so, the external device 2 can return to normal data output control after the temperature alarm is released.

(Example 4) Next, operation | movement of the radio | wireless communications system which concerns on one Example of this invention is demonstrated using FIG. 2 again.
The wireless communication terminal 1 converts an antenna 3 that transmits / receives a wireless signal, converts wired data into wireless data, transmits the data through the antenna 3, and converts wireless data received from the antenna 3 into wired data for transmission to the external device 2. Monitors the temperature in the wireless communication terminal device 1, the wireless transmission / reception unit 4 that performs, the wireless transmission / reception control unit 5 that controls whether to transmit wireless data, the wired transmission / reception unit 6 that transmits / receives wired data to / from the external device 2, The temperature monitoring unit 7 that notifies the external device 2 and the wired transmission / reception control unit 8 of a temperature alarm when the temperature exceeds a threshold value (for example, 70 ° C.), and the wired data from the external device 2 are stored too fast. If the buffer memory that is part of the unit is likely to overflow, if the internal processing is busy with some processing and data processing cannot proceed, or if the temperature alarm from the temperature monitoring unit 7 In the case where it is desired to suppress the output, the transmission / reception control unit 8 is configured to adjust the flow of wired data by performing flow control including output stop, output speed reduction, or constant interval output from the external device 2 side Are the same.

  Here, differences from the third embodiment will be described. In the present embodiment, the wireless communication terminal 1 and the external device 2 are used as a wireless communication system, and in the first to third embodiments, the flow control and the like are performed from the wireless communication terminal 1 to the external device 2. 7 is provided so as to be directly connected to the external device 2, so that the external device 2 performs the flow control including the output stop of the information, the deceleration of the output speed, or the output at regular intervals in response to the temperature alarm from the temperature monitoring unit 7. In addition to the embodiment described in the third embodiment, the state of the temperature monitoring unit 7 is monitored from the external device 2 under specific conditions, and the external device 2 itself transmits information to the wireless communication terminal 1 according to the state. In other words, control is performed, that is, flow control including output stop, output speed reduction, or constant interval output is performed. Here, there are various specific conditions under which the external device 2 monitors the state of the temperature monitoring unit 7, for example, monitoring at regular intervals, checking at the time of transmission of information, or information exceeding a specific data amount. One or a plurality of conditions may be stored in advance so that the monitoring timing can be selectively controlled by checking at the time of transmission or by appropriately determining and monitoring necessary timing and conditions.

(Example 5) Next, operation | movement of the radio | wireless communication terminal which concerns on one Example of this invention is demonstrated using FIG. 1 and FIG.
The temperature monitoring unit 7 measures the internal temperature of the wireless communication terminal 1 and outputs it to the wired transmission / reception control unit 8.
When the temperature obtained from the temperature monitoring unit 7 exceeds a preset threshold value (for example, 70 ° C.), the wired transmission / reception control unit 8 performs wired communication with respect to the wired transmission / reception control unit 22 of the external device 2. An instruction to stop information output from the transmission / reception unit 21 or to reduce the information output speed is given. When the temperature obtained from the temperature monitoring unit 7 is equal to or lower than a preset threshold (for example, 70 ° C.), the wired transmission / reception control unit 8 controls the wired transmission / reception control unit 22 of the external device 2. The start of information output from the wired transmission / reception unit 21 or the release of deceleration of the information output speed is instructed.

  Further, the wired transmission / reception control unit 8 is configured such that when the reading speed of the storage unit built in the wired transmission / reception unit 6 is reduced, the wired transmission / reception control unit 22 of the external device 2 is likely to exceed the storage capacity of the storage unit. To stop outputting information from the wired transmission / reception unit 21 or to reduce the information output speed. Then, when the storage capacity of the storage unit built in the wired transmission / reception unit 6 decreases to a capacity that allows normal operation, the wired transmission / reception control unit 8 controls the wired transmission / reception control unit 22 of the external device 2 with respect to the wired transmission / reception control unit 22. An instruction is given to start information output from the transmission / reception unit 21 or cancel the deceleration of the information output speed.

When the reading speed of the storage unit built in the wired transmission / reception unit 6 decreases, the wireless transmission / reception unit 4 often performs retransmission of information to the base station or the like. In this case, the wireless transmission / reception unit 4 may perform transmission for a long time, and the internal temperature of the wireless communication terminal 1 may rapidly increase. For this reason, the wired transmission / reception control unit 8 instructs the external device 2 to stop the information output or reduce the information output speed in order to suppress the internal temperature rise in advance.
Furthermore, when the wired transmission / reception control unit 8 receives an information output start signal from the wired transmission / reception control unit 22 of the external device 2, the wired transmission / reception control unit 8 receives information output from the external device 2 to the wired transmission / reception unit 6. Control signal for output.

Next, detailed operation of the wireless communication terminal according to another embodiment of the present invention will be described with reference to FIG.
FIG. 3 is a flowchart for explaining the operation of the radio communication terminal according to another embodiment of the present invention.
In FIG. 3, the wired transmission / reception control unit 8 of the wireless communication terminal 1 starts operation.
The wired transmission / reception control unit 8 acquires the internal temperature from the temperature monitoring unit 7 in the process of S31.
In the process of S32, the internal temperature is compared with a preset temperature threshold (for example, 70 ° C.). If the internal temperature is higher than the temperature threshold (YES), the process proceeds to S33, and the internal temperature is equal to or lower than the temperature threshold. In the case of (NO), the process returns to S31.
In the processing of S33, it is determined from the operation of the wired transmission / reception unit 6 whether the wired transmission / reception unit 21 of the external device 2 is outputting information. If the wired transmission / reception unit 21 is outputting information (YES), the processing of S34 is performed. If the wired transmission / reception unit 21 is not outputting information (NO), the process proceeds to S35.

In the process of S <b> 34, the wired transmission / reception control unit 22 of the external device 2 is instructed to stop outputting information or to reduce the output speed.
In the process of S35, the internal temperature is acquired from the temperature monitoring unit 7.
In the process of S36, the internal temperature is compared with a preset temperature threshold (for example, 70 ° C.). If the internal temperature is equal to or lower than the temperature threshold (YES), the process proceeds to S37, and the internal temperature is lower than the temperature threshold. If it is higher (NO), the process returns to S35.
In the process of S37, the wired transmission / reception control unit 22 of the external device 2 is instructed to stop outputting information or cancel the output speed deceleration, and the process returns to S31.

The above-described temperature threshold value may be different when an instruction to stop information output to the external device 2 is given and when the stop is released. For example, the temperature threshold value may be set to 70 ° C. when an instruction to stop information output or the like is given, and may be set to 60 ° C. when the stop is released.
Further, the wired transmission / reception control unit 8 may instruct the wired transmission / reception control unit 22 of the external device 2 to output information at a predetermined interval (for example, every 10 minutes).

(Example 6) Next, operation | movement of the radio | wireless communication terminal which concerns on another one Example of this invention is demonstrated using FIG. 2 and FIG.
The wireless communication terminal 1 converts an antenna 3 that transmits / receives a wireless signal, converts wired data into wireless data, transmits the data through the antenna 3, and converts wireless data received from the antenna 3 into wired data for transmission to the external device 2. Monitors the temperatures in the wireless communication terminal device 1, the wireless transmission / reception control unit 5 that controls whether to transmit wireless data, the wired transmission / reception unit 6 that transmits / receives wired data to / from the external device 2, and the wireless communication terminal device 1. When the temperature exceeds a threshold value (for example, 70 ° C.), the temperature monitoring unit 7 notifies the external device 2 and the wired transmission control unit 8 of a temperature alarm, and the wired data from the external device 2 is too fast and the buffer memory If the internal processing is busy with some processing and data processing cannot proceed, the temperature alarm from the temperature monitoring unit 7 may be used to suppress the temperature rise. Composed of the wired transmission and reception controller 8 which adjusts the flow of wired data subjected to the external device 2 side and the flow control.
The temperature alarm includes a dedicated line and a command notification method. The temperature alarm may be notified to the external device 2, and the data may be controlled on the external device 2 side until the temperature alarm is canceled to suppress the temperature increase of the wireless communication terminal.

Next, detailed operation of the wireless communication terminal according to the embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a flowchart for explaining the operation of the wireless communication terminal according to the embodiment of the present invention.
In FIG. 4, the wireless communication terminal 1 starts monitoring the temperature in the device by the temperature monitoring unit 7.
The wireless communication terminal 1 determines whether or not there is a temperature information report request from the external device 2 in the process of S11. If there is a temperature information report request (YES), the process proceeds to the process of S12 and there is no temperature information report request. In the case (NO), the process proceeds to S13.
When there is a temperature information report request from the wired transmission / reception control unit 22 of the external device 2, the wireless communication terminal 1 receives the temperature information from the temperature monitoring unit 7 and sends the temperature information to the wired transmission / reception control unit 22 of the external device 2. Is reported (S12).
In the process of S13, the temperature monitoring unit 7 compares the temperature threshold (for example, 70 ° C.) set in advance with the internal temperature of the device. If the internal temperature is lower (NO), the process returns to the process of S11, and the internal temperature If the temperature is higher (YES), the process proceeds to S14.

When the wireless communication terminal 1 starts transmitting data (information) from the external device 2 wirelessly by transmission control from the external device 2, the power consumption increases, so the internal temperature rises.
In the process of S14, when the internal temperature exceeds a temperature threshold (for example, 70 ° C.), the temperature monitoring unit 7 notifies the wired transmission / reception control unit 8 or the external device 2 of a temperature alarm. The temperature monitoring unit 7 may notify the temperature alarm to both the wired transmission / reception control unit 8 and the external device 2.
In the processing of S15, the wired transmission / reception control unit 8 that has received the temperature alarm notification outputs a hardware flow control or software flow control execution signal to the external device 2, and the flow of wired data (information) from the external device 2 Adjust. When the temperature monitoring unit 7 notifies the external device 2 of a temperature alarm, the external device 2 recognizes the temperature alarm of the wireless communication terminal 1 and suppresses temperature rise such as adjusting the flow of wired data or disconnecting the wireless communication itself. Implement control.

In the process of S16, the temperature monitoring unit 7 compares the temperature threshold (for example, 70 ° C.) set in advance with the device internal temperature, and the device internal temperature is equal to or lower than the temperature threshold (for example, 70 ° C.) (YES). If the device internal temperature is higher than a temperature threshold (for example, 70 ° C.) (NO), the process returns to S14.
The temperature alarm notification to the external device 2 is canceled by the processing of the temperature monitoring unit 7 and S17.
In step S18, the wired transmission / reception control unit 8 notifies the external device 2 of the release of flow control, and returns to step S11.

The wireless communication terminal according to the embodiment of the present invention can suppress the temperature increase of the wireless communication terminal in cooperation with the external device without impairing the function of the wireless communication terminal itself.
Moreover, the wireless communication terminal which is embodiment of this invention can carry out the radio transmission of the information output from an external device reliably, suppressing the temperature rise of a wireless communication terminal by cooperating with an external device.

  Although the present invention has been described in detail above, it is needless to say that the present invention is not limited to the wireless communication terminals described herein and can be widely applied to other wireless communication terminals.

  This application claims the benefit of priority based on Japanese Patent Application No. 2014-236258 filed on Nov. 21, 2014, the entire disclosure of which is incorporated herein by reference.

  The present invention can also be applied to applications that operate when an electronic device and another electronic device are connected.

  DESCRIPTION OF SYMBOLS 1,11 ... Wireless communication terminal, 2 ... External apparatus, 3 ... Antenna, 4 ... Wireless transmission / reception part, 5 ... Wireless transmission / reception control part, 6, 21 ... Wire transmission / reception part, 7 ... Temperature monitoring part, 8, 22 ... Wire transmission / reception Control unit, 23... Information collecting unit.

Claims (4)

A wireless communication terminal connected to an external device,
The wireless communication terminal includes a wireless transmission / reception unit, a wired transmission / reception unit, a wired transmission / reception control unit, and a temperature monitoring unit,
And a storage unit for temporarily storing the information to sequentially wirelessly transmit information from the external device from the wireless transmission / reception unit,
The wired transmission / reception control unit adjusts the flow of wired data by instructing the wired transmission / reception unit to reduce the output speed of the information to the wireless transmission / reception unit or output at regular intervals according to the temperature acquired from the temperature monitoring unit, A wireless communication terminal that instructs the external device to stop outputting information, decelerate output speed, or output at regular intervals when the storage unit exceeds a predetermined capacity with respect to storage capacity. The wireless communication terminal according to claim 1,
The wireless communication terminal, wherein the wired transmission / reception control unit instructs the external device to stop outputting information, decelerate output speed, or output at regular intervals from the wired transmission / reception unit using a communication message. A wireless communication terminal according to any one of claims 1 to 2,
Wireless communication characterized by instructing the external device to cancel the instruction according to the temperature acquired from the temperature monitoring unit after instructing the external device to stop outputting information, decelerate the output speed, or output at regular intervals. Terminal. A wireless communication system comprising the wireless communication terminal according to any one of claims 1 to 3 and the external device connected to the wireless communication terminal by wire,
The external device includes a wired transmission / reception unit, a wired transmission / reception control unit, and an information collection unit,
The wired transmission / reception control unit of the external device monitors information of the temperature monitoring unit of the wireless communication terminal under a predetermined condition, and outputs information to the wireless communication terminal according to the temperature acquired from the temperature monitoring unit A wireless communication system that controls stop, output speed reduction, or constant interval output.

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