JP6524549B2 - Wireless device - Google Patents

Description

The present invention relates to a communication technique relates to particular wireless device for transmitting and receiving data.

  In a keyless entry system for a vehicle, when the portable device transmits a signal including a personal identification code to the in-vehicle device, the in-vehicle device collates the personal identification code of the received signal, and activates the lock device if the collation matches. Lock or unlock the vehicle door. When the vehicle door is locked or unlocked using this keyless entry system, it was not possible to remotely confirm that the vehicle door was correctly locked or unlocked. In order to confirm, after transmitting the signal, the portable device receives a confirmation signal from the on-board device (see, for example, Patent Document 1).

Unexamined-Japanese-Patent No. 10-231651

  The relationship between the portable device and the in-vehicle device in the keyless entry system is also included in the electric lock system and the window opening and closing system. In these, the wireless device on the portable device side (hereinafter referred to as "first wireless device") transmits a signal to the on-vehicle device side wireless device (hereinafter referred to as "second wireless device"), and the second wireless device A confirmation signal is sent to the first wireless device. These are systems mainly based on one-way data communication from the first wireless device to the second wireless device. However, it may be desirable to interrupt data communication in the opposite direction from the second wireless device to the first wireless device.

  The present invention has been made in view of such a situation, and an object thereof is to provide a technology for interrupting data communication in the opposite direction when data communication in one direction is mainly performed.

In order to solve the above problems, a wireless device according to an aspect of the present invention includes a data transmission operation for transmitting data instructing an operation of a device, a response confirmation reception operation for receiving a response confirmation from the device, and a device And a control unit that causes the communication unit to switch data transmission operation, response confirmation reception operation, data reception operation, and stop state. After data is transmitted by the data transmission operation, the control unit switches the data transmission operation to the response confirmation reception operation, and waits for reception of the confirmation response over the period of the response confirmation reception operation, and the control unit (i) If the acknowledgment is not received in the response acknowledgment receiving period, the response acknowledgment receiving operation is switched to the stop state, and if the acknowledgment is received in the response acknowledgment receiving period, the response acknowledgment receiving operation is changed to the data receiving operation. Switching is made to await reception of data over a period of data reception operation provided continuously after a period of response confirmation reception operation , the communication unit executes the data reception operation by intermittent operation, and the communication unit is At the time of data transmission operation, information on control contents of intermittent reception is transmitted together with data .
Another aspect of the invention is also a wireless device. This apparatus performs a data transmission operation for transmitting data instructing operation, a response confirmation reception operation for receiving a response confirmation from the device, and a communication for executing a data reception operation for receiving data indicating a response message. And a control unit that causes the communication unit to switch data transmission operation, response confirmation reception operation, data reception operation, and stop state. After data is transmitted by the data transmission operation, the control unit switches the data transmission operation to the response confirmation reception operation, and waits for reception of the confirmation response over the period of the response confirmation reception operation, and the control unit (i) If the acknowledgment is not received in the response acknowledgment receiving period, the response acknowledgment receiving operation is switched to the stop state, and if the acknowledgment is received in the response acknowledgment receiving period, the response acknowledgment receiving operation is changed to the data receiving operation. Switching is made to await reception of data over a period of data reception operation provided continuously after a period of response confirmation reception operation , the communication unit executes the data reception operation by intermittent operation, and the communication unit is At the time of data transmission operation, information on control contents of intermittent reception is transmitted together with data .

  Note that arbitrary combinations of the above-described components, and conversions of the expression of the present invention among methods, apparatuses, systems, recording media, computer programs and the like are also effective as aspects of the present invention.

  According to the present invention, it is possible to interrupt data communication in the opposite direction when mainly using one-way data communication.

It is a figure which shows the structure of the communication system which concerns on Example 1 of this invention. It is a figure which shows the outline | summary of the communication procedure in the communication system of FIG. FIGS. 3 (a)-(b) are diagrams showing formats of signals used in the communication system of FIG. It is a flowchart which shows the communication procedure by the 1st radio | wireless apparatus of FIG. It is a flowchart which shows the other communication procedure by the 1st radio | wireless apparatus of FIG. FIGS. 6 (a) and 6 (b) are sequence diagrams showing communication procedures by the communication system according to the second embodiment of the present invention. 7 (a) and 7 (b) are sequence diagrams showing another communication procedure by the communication system according to the second embodiment of the present invention. FIGS. 8A to 8C are sequence diagrams showing still another communication procedure by the communication system according to the second embodiment of the present invention.

Example 1
Before specifically explaining the present invention, an outline will be given. The first embodiment of the present invention relates to a communication system in which two wireless devices are included. As described above, in the communication system, one-way data communication from the first wireless device to the second wireless device is mainly performed. For example, in a wireless sensor terminal or a wireless calling device corresponding to the first wireless device, sensing information, paging information, etc. are transmitted unidirectionally to reduce power consumption, but for unidirectional transmission, the first wireless I can not control the device side. An object of the present embodiment is to achieve both low power consumption of one-way communication and two-way communication enabling control to the first wireless device.

  The first wireless device transmits the sensed information or the information on which the call button is pressed (hereinafter, also referred to as “data”) to the second wireless device in a unidirectional manner in a fixed cycle. The second wireless device, upon receiving the data, transmits an acknowledgment (hereinafter referred to as “ACK”) to the first wireless device, and therefore, after transmitting the data, the first wireless device waits for reception of the acknowledgment. After receiving the ACK from the second wireless device, the first wireless device performs an operation for receiving data from the second wireless device from the standby operation for ACK reception for a certain period of time. If the second wireless device transmits data during a certain period of time, the first wireless device receives the data. After the elapse of a predetermined period, the first wireless device transitions to the stop state.

  FIG. 1 shows the configuration of a communication system 100 according to a first embodiment of the present invention. The communication system 100 includes a first wireless device 10a and a second wireless device 10b. Here, the first wireless device 10 a and the second wireless device 10 b are collectively referred to as a wireless device 10. The first radio apparatus 10 a includes a reception unit 20, a communication unit 22, a control unit 24, and a processing unit 26. The communication unit 22 includes a transmission unit 28 and a reception unit 30. The second radio apparatus 10 b includes a communication unit 50, a control unit 52, and an IF unit 54.

  The first wireless device 10a is a wireless device that transmits instructions and information, and corresponds to the above-described wireless sensor terminal or wireless calling device. On the other hand, the second wireless device 10b is a wireless device on the side of receiving an instruction or information, and is a wireless device connected to a device controlled by the instruction or information. The devices to be controlled correspond to, for example, a device for opening and closing a window, a ventilating fan that is turned on / off, and a device for the called clerk. Therefore, data communication that is wireless communication between the first wireless device 10a and the second wireless device 10b is mainly performed in one direction from the first wireless device 10a to the second wireless device 10b.

  The receiving unit 20 of the first wireless device 10a receives data to be transmitted. Specifically, the receiving unit 20 is connected to the temperature sensor, and receives sensing information, which is the temperature measured by the temperature sensor, as data. Further, the receiving unit 20 is connected to the call button, and receives, as data, call information when the call button is pressed. The reception unit 20 outputs the received data to the communication unit 22.

  The transmitting unit 28 included in the communication unit 22 receives the data from the receiving unit 20, converts the received data into a wireless signal, and transmits it from the antenna. The transmission unit 28 has a modulation function, a frequency conversion function, and an amplification function to convert data into a wireless signal, but a known technique may be used for these, and therefore the description thereof is omitted here. Note that an operation for transmitting data performed by the transmission unit 28 is referred to as a “data transmission operation”.

  The receiver 30 included in the communication unit 22 receives a wireless signal via an antenna. The receiving unit 30 converts the received wireless signal into baseband information and outputs the baseband information to the processing unit 26. The baseband information includes ACK and data. The receiving unit 30 has an amplification function, a frequency conversion function, and a demodulation function to convert a radio signal into baseband information, but a known technology may be used for these, so the description is omitted here. Do. The operation for receiving the ACK performed in the receiving unit 30 is called "response acknowledge reception operation", and the operation for receiving data is called "data reception operation".

  The processing unit 26 receives baseband information from the receiving unit 30. If the baseband information is an ACK, the processing unit 26 confirms that the ACK has been received, and notifies the control unit 24 to that effect. If the baseband information is data, the processing unit 26 executes a process according to the data. For example, when the data is a message, the processing unit 26 notifies the user of the content of the message or stores the content of the message.

  Here, in the processing in the communication unit 22, (1) only the transmission unit 28 operates and the reception unit 30 stops, or (2) only the reception unit 30 operates and the transmission unit 28 stops ((3 ) Either the transmission unit 28 or the reception unit 30 is stopped. That is, in the communication unit 22, neither the transmission unit 28 nor the reception unit 30 operates. (1) corresponds to the above-mentioned "data transmission operation", and (2) corresponds to the above-mentioned "response confirmation reception operation" and "data reception operation". Also, (3) is called "stop state".

  The control unit 24 causes the communication unit 22 to sequentially switch the data transmission operation, the response confirmation reception operation, and the data reception operation, and shifts the communication unit 22 from the data reception operation to the stop state. Specifically, the control unit 24 causes the communication unit 22 to be in a stop state at normal times. When the reception unit 20 receives data, the control unit 24 operates only the transmission unit 28. By this, the stop state is switched to the data transmission operation.

  As described above, when data is transmitted from the antenna in the data transmission operation, the control unit 24 stops the transmission unit 28 and operates only the reception unit 30. As a result, the data transmission operation is switched to the response confirmation reception operation. The period of the response confirmation receiving operation is determined in advance as a fixed period, and the receiving unit 30 waits for reception of a wireless signal over the period of the response confirmation receiving operation. In the period, when the processing unit 26 confirms that the receiving unit 30 receives the wireless signal and the ACK signal is included in the wireless signal, the control unit 24 stops the transmitting unit 28, and only the receiving unit 30 is Continue to make it work. This switches the response confirmation reception operation to the data reception operation. On the other hand, in the response confirmation reception operation period, when the receiving unit 30 does not receive the wireless signal, or when the processing unit 26 can not confirm that the wireless signal includes an ACK, the control unit 24 also receives the wireless signal. Stop it. By this, the response confirmation reception operation is switched to the stop state. In this case, the process from the data transmission operation as described above may be performed again.

  The period of the data reception operation is a fixed period, and the reception unit 30 waits for reception of the wireless signal over the period of the data reception operation. During the period, when the receiving unit 30 receives a wireless signal, the processing unit 26 processes data included in the wireless signal. When the data processing ends or the data reception operation period ends, the control unit 24 also stops the receiving unit 30. As a result, the data reception operation is switched to the stop state.

  The communication unit 50 of the second wireless device 10 b executes a process corresponding to the communication unit 22. The communication unit 50 keeps waiting for the reception of the wireless signal from the first wireless device 10a by constantly executing the reception process. When receiving the wireless signal, the communication unit 50 converts the wireless signal into data and outputs the data to the IF unit 54. Therefore, the communication unit 50 includes an amplification function, a frequency conversion function, and a demodulation function as in the reception unit 30. When the control unit 52 confirms reception of the wireless signal in the communication unit 50, that is, acquisition of data, the control unit 52 causes the communication unit 50 to generate an ACK. The communication unit 50 converts the generated ACK into a radio signal and transmits it from the antenna. Therefore, the communication unit 50 includes a modulation function, a frequency conversion function, and an amplification function as the transmission unit 28 does. The control unit 24 executes processing so that the period from confirmation of data acquisition to transmission of an ACK is shorter than the period of the response confirmation reception operation in the first wireless device 10a.

  The IF unit 54 receives data from the communication unit 50. The IF unit 54 is connected to a device such as a device for opening and closing a window, a ventilating fan that is turned on / off, and a device on the side of a called store clerk, and outputs data to the device. The device executes processing according to the data. When data is generated by this process, the IF unit 54 receives data from the device and outputs the data to the communication unit 50.

  When the communication unit 50 receives the data from the IF unit 54 after transmitting the wireless signal including the ACK, the communication unit 50 converts the received data into a wireless signal and transmits it from the antenna. The control unit 24 performs processing so that the period from the transmission of the ACK to the transmission of data is included in the period of the data reception operation in the first wireless device 10a.

  Here, the reception unit 30 of the first wireless device 10a executes the response confirmation reception operation by the continuous operation, but executes the data reception operation by the intermittent operation. To illustrate this, use FIG. FIG. 2 is a diagram showing an outline of a communication procedure in the communication system 100. As shown in FIG. In the upper part of FIG. 2, the transmission operation "TX" and the reception operation "RX" of the second radio apparatus 10b are shown, and in the lower part, the transmission operation "TX" and the reception operation "RX" of the first radio apparatus 10a. Is indicated. During the data transmission operation, the first wireless device 10a transmits data to the second wireless device 10b, and the second wireless device 10b receives data from the first wireless device 10a.

  In the response confirmation reception operation period following the data transmission operation period, the second wireless device 10b transmits an ACK to the first wireless device 10a, and the first wireless device 10a receives an ACK from the second wireless device 10b. Do. During the data reception operation period following the response confirmation reception operation period, the first wireless device 10a receives the data from the second wireless device 10b in five sections indicated as "data 1", ..., "data 5". Wait to receive data. The control unit 24 also stops the receiving unit 30 in a section other than the five sections indicated as “data 1”,..., “Data 5” in the data reception operation period. That is, the receiving unit 30 operates in five sections indicated as “data 1”,..., “Data 5”, and executes an intermittent operation to stop in the other sections.

  This intermittent operation is characterized by the number of operations, the interval of operations, and the length of the section. The number of operations is the number of sections in which the receiving unit 30 is operating, and is “5” in the case of FIG. The operation interval is the interval between the section in which the receiving unit 30 operates and the next section, and corresponds to the interval between the head timing of “data 1” and the head timing of “data 2” in FIG. The length of a section is the length which one section continues, and corresponds to the length which "data 1" in Drawing 2 continues.

  The number of operations, the interval of operations, and the length of the section are recognized by the first wireless device 10a and the second wireless device 10b. The second wireless device 10 b transmits data to the first wireless device 10 a in any of “data 1” to “data 5”, and the first wireless device 10 a receives data from the second wireless device 10 b. . Return to FIG.

  The number of operations, the interval of the operations, and the length of the section are collectively referred to as information on the control content of intermittent reception. This may be held by the first wireless device 10a and the second wireless device 10b as fixed values, but may be set by the first wireless device 10a or the second wireless device 10b.

  First, the case where the information regarding the control content of intermittent reception is set by the first radio apparatus 10a will be described. The transmitting unit 28 of the first wireless device 10a transmits, in addition to the data, information on control content of intermittent reception at the time of the data transmitting operation. FIGS. 3 (a) and 3 (b) show the format of the signal used in the communication system 100, and in particular, FIG. 3 (a) shows the format of the signal transmitted from the transmitter. As shown in the figure, "number information", "interval information", and "section information" are attached to the data. The "number information" corresponds to the number of operations described above, the "interval information" corresponds to the interval of the operations described above, and the "section information" corresponds to the length of the section described above. It is information on control contents. When the second radio apparatus 10b receives the "count information", "interval information", and "section information" together with the data, the second radio apparatus 10b receives the data based on the "count information", "interval information", and "section information". Set the timing of intermittent transmission at the time of transmission. That is, the control unit 52 sets the timing of intermittent transmission at the time of transmitting data based on the "number of times information", the "interval information", and the "section information".

  Next, the case where the information regarding the control content of intermittent reception is set by the 2nd radio equipment 10b is explained. The communication unit 50 of the second wireless device 10b transmits information related to the control content of the intermittent reception in addition to the ACK. FIG. 3 (b) shows the format of the signal transmitted from the communication unit 50. As shown, “number information”, “interval information”, and “section information” are attached to the ACK. The receiving unit 30 of the first radio apparatus 10a receives the information related to the control content of the intermittent reception in addition to the ACK in the response confirmation receiving operation. The control unit 24 sets the timing of intermittent reception in the period of the data reception operation based on the received “number information”, “interval information”, and “section information”.

  In terms of hardware, this configuration can be realized with the CPU, memory, or other LSI of any computer, and with software, it can be realized by a program loaded into the memory, etc. Are drawing functional blocks. Therefore, it is understood by those skilled in the art that these functional blocks can be realized in various forms only by hardware and by a combination of hardware and software.

  The operation of the communication system 100 having the above configuration will be described. FIG. 4 is a flowchart showing a communication procedure by the first wireless device 10a. The transmitter 28 transmits data (S10). The control unit 24 sets a data reception operation (S12). The receiving unit 30 receives the ACK (S14). The receiving unit 30 executes a receiving operation (S16). When the receiving unit 30 receives data (Y in S18), the data processing is performed (S20). When the receiving unit 30 does not receive data (N in S18), if the data receiving operation is to be continued (Y in S22), the process returns to Step S16. If the data reception operation is not to be continued (N at S22), the process is terminated.

  FIG. 5 is a flowchart showing another communication procedure by the first wireless device 10a. The transmitter 28 transmits data (S30). The receiving unit 30 receives the ACK (S32). The control unit 24 sets a data reception operation (S34). The receiving unit 30 executes a receiving operation (S36). When the receiving unit 30 receives data (Y in S38), the data processing is executed (S40). When the receiving unit 30 does not receive data (N in S38), if the data receiving operation is continued (Y in S42), the process returns to Step 36. If the data reception operation is not continued (N at S42), the process is ended.

  According to this embodiment, since the data transmission operation, the response confirmation reception operation, and the data reception operation are switched in order, and the data reception operation is shifted to the stop state, ACK and data can be received after data transmission. In addition, since ACK and data are received after transmitting data, it is possible to interrupt data communication in the opposite direction when data communication in one direction is mainly performed. Further, since data communication in the opposite direction is interrupted when data communication in one direction is mainly performed, convenience can be improved. Further, since the data is received following the ACK, it is possible to receive the data after confirming that the transmission of the data is successful.

  Further, since the data transmission operation, the response confirmation reception operation, and the data reception operation are sequentially switched to shift from the data reception operation to the stop state, an increase in power consumption can be suppressed. Further, since the data reception operation is performed by the intermittent operation, it is possible to suppress an increase in power consumption. Further, in the data transmission operation, the information related to the control content of the intermittent reception is attached to the data and transmitted, so that the timing of the intermittent reception can be determined in the first wireless device. Further, in the response confirmation reception operation, the information on the control content of the intermittent reception is received along with the response confirmation, so that the timing of the intermittent reception can be determined in the second wireless device.

  The outline of one aspect of the present invention is as follows. The wireless device 10 according to an aspect of the present invention includes a data transmission operation for transmitting data, a response confirmation reception operation for receiving a response confirmation, and a communication unit 22 that executes a data reception operation for receiving data. The communication unit 22 includes a control unit 24 that switches data transmission operation, response confirmation reception operation, and data reception operation in order. The control unit 24 shifts the communication unit 22 from the data reception operation to the stop state.

  The communication unit 22 may execute the data reception operation by intermittent operation.

  During the data transmission operation, the communication unit 22 may transmit information related to the control content of intermittent reception in addition to the data.

  The communication unit 22 may receive, in response to the response confirmation, the information on the control content of the intermittent reception at the time of the response confirmation reception operation.

  Another aspect of the present invention is a communication system. The communication system comprises a first radio 10a and a second radio 10b in communication with each other. The first radio apparatus 10a performs a data transmission operation for transmitting data, a response confirmation reception operation for receiving a response confirmation, a communication unit 22 that executes a data reception operation for receiving data, and the communication unit 22. On the other hand, the control unit 24 switches the data transmission operation, the response confirmation reception operation, and the data reception operation in order. The control unit 24 shifts the communication unit 22 from the data reception operation to the stop state.

  Yet another aspect of the present invention is a communication method. This communication method includes a step of sequentially switching data transmission operation for transmitting data, response confirmation reception operation for receiving response confirmation, data reception operation for receiving data, and stop state from data reception operation. And a transition step.

(Example 2)
Next, Example 2 will be described. The second embodiment relates to a communication system in which one-way data communication from the first wireless device to the second wireless device is mainly performed, as in the first embodiment. In the second embodiment, a specific example of actually using the communication system will be described. Specific examples are (1) electric lock, (2) window opening and closing device, and (3) wireless call. The communication system 100 according to the second embodiment is the same type as that of FIG. Here, the differences will be mainly described.

  First, the electric lock will be described. In this case, since the second wireless device 10b is mounted on the electric lock, the IF unit 54 of the second wireless device 10b is connected to the electric lock. Further, the first wireless device 10a is mounted on the electric lock remote controller. Therefore, the reception unit 20 of the first wireless device 10a is connected to the "lock button" and the "unlock button" of the electric lock remote controller. When the "locking button" in the electric lock remote control is pressed, the receiving unit 20 receives a locking instruction, and when the "unlocking button" is pressed, the receiving unit 20 receives a unlocking instruction. Here, the instruction for locking or the instruction for unlocking corresponds to the data transmitted in the data transmission operation. During the data transmission operation, the transmission unit 28 transmits data for instructing locking or unlocking of the electric lock.

  When the communication unit 50 of the second wireless device 10b receives data instructing locking or unlocking of the electric lock, the IF unit 54 outputs the data to the electric lock. The electric lock performs locking when instructed to lock, and unlocks when instructed to lock. The electric lock outputs data indicating the state of locking or unlocking to the second wireless device 10b. If the electric lock is to be locked but can not be locked, it detects an abnormality and outputs data indicating the abnormality to the second wireless device 10b. Data indicating the state of locking or unlocking, and data indicating the abnormality are collectively referred to as data indicating the state of the electric lock. When the IF unit 54 receives data indicating the state of the electric lock from the electric lock, the communication unit 50 transmits the data.

  The receiving unit 30 of the first wireless device 10a receives data indicating the state of the electric lock during the data receiving operation. The processing unit 26 displays the state of the electric lock. In other words, locking, unlocking and abnormality are displayed.

  6 (a) and 6 (b) are sequence diagrams showing communication procedures by the communication system 100 according to the second embodiment of the present invention. FIG. 6 (a) shows the case where locking is performed. The first wireless device 10a receives a "lock" operation by a person (S60). The first wireless device 10a transmits a "lock" instruction to the second wireless device 10b (S62). The second radio apparatus 10b transmits an ACK to the first radio apparatus 10a (S64). The second wireless device 10b locks the electric lock (S66). The second wireless device 10 b transmits a “locking” operation completion notification to the first wireless device 10 a (S 68). The first wireless device 10a displays the completion of the operation (S70).

  FIG. 6 (b) shows the case where an abnormality occurs at the time of locking. The first wireless device 10a receives a "lock" operation by a person (S80). The first wireless device 10a transmits a "lock" instruction to the second wireless device 10b (S82). The second wireless device 10b transmits an ACK to the first wireless device 10a (S84). The second radio apparatus 10b receives an abnormality in the electric lock operation (S86). The second radio apparatus 10b transmits an abnormality notification to the first radio apparatus 10a (S88). The first wireless device 10a displays an abnormality (S90).

  Next, the window opening and closing device will be described. In this case, since the second radio apparatus 10b is mounted on the window opening and closing apparatus, the IF unit 54 of the second radio apparatus 10b is connected to the window opening and closing apparatus. In addition, the first wireless device 10a is mounted on a temperature sensor. Therefore, the receiving unit 20 of the first wireless device 10a receives the temperature from the temperature sensor. The reception unit 20 monitors a change in the received temperature, and detects a rise or a drop in temperature when a change in the temperature larger than a threshold is detected. The reception unit 20 outputs an instruction of “open” to the transmission unit 28 when detecting an increase in temperature, and outputs an instruction of “close” to the transmission unit 28 when detecting a decrease in temperature. Here, the "open" instruction or the "close" instruction corresponds to data transmitted in the data transmission operation, and can be said to be data instructing the opening and closing of the window. The transmitting unit 28 transmits data for instructing the opening and closing of the window in the data transmitting operation.

  When the communication unit 50 of the second wireless device 10b receives data instructing the opening and closing of the window, the IF unit 54 outputs the data to the window opening and closing device. The window opening device opens the window when "open" is instructed, and closes the window when "close" is instructed. The window opening and closing apparatus outputs data indicating the state of the window to the second radio apparatus 10b. The data indicating the state of the window may indicate that the window is fully open or fully closed. When the IF unit 54 receives data indicating the state of the window from the window opening and closing apparatus, the communication unit 50 transmits the data.

  The receiving unit 30 of the first wireless device 10a receives data indicating the state of the window at the time of the data receiving operation. The processing unit 26 stores data indicating the state of the window. When the window is fully open or fully closed, the processing unit 26 grasps it. Therefore, when the window is fully closed, the reception unit 20 can recognize that the window can not be closed any more even if a drop in temperature is detected. Therefore, the reception unit 20 does not output the “close” instruction to the transmission unit 28. The same applies to the case of full opening.

  FIGS. 7A to 7B are sequence diagrams showing another communication procedure by the communication system 100 according to the second embodiment of the present invention. FIG. 7A shows the case where the window is closed. The first wireless device 10a detects a drop in temperature (S100). The first wireless device 10a transmits a "close" instruction to the second wireless device 10b (S102). The second wireless device 10b transmits an ACK to the first wireless device 10a (S104). The second radio apparatus 10b causes the window opening and closing apparatus to close (S106). The second wireless device 10b transmits a status notification to the first wireless device 10a (S108). The first wireless device 10a stores the state of the window (S110).

  FIG. 7 (b) shows the case where the window is fully closed. The first wireless device 10a detects a drop in temperature (S120). The first wireless device 10a transmits a "close" instruction to the second wireless device 10b (S122). The second wireless device 10b transmits an ACK to the first wireless device 10a (S124). The second radio apparatus 10b causes the window opening and closing apparatus to fully close (S126). The second wireless device 10b transmits a status notification to the first wireless device 10a (S128). The first wireless device 10a stores the fully closed state (S130).

  Finally, the wireless call will be described. In this case, since the second wireless device 10b is mounted on the parent device, the IF unit 54 of the second wireless device 10b is connected to the parent device. Also, the first wireless device 10a is mounted on the calling device. Therefore, the reception unit 20 of the first wireless device 10a is connected to the "call button" in the calling device. When the "call button" in the calling device is pressed down, the reception unit 20 receives a call instruction. The transmission unit 28 transmits data instructing a call in the data transmission operation.

  When the communication unit 50 of the second wireless device 10b receives data instructing a call, the IF unit 54 outputs it to the parent device. The parent machine notifies the store clerk that there is a call. The parent machine receives a response from the store clerk. The response is indicated as, for example, "I'm going" or "Please wait". Here, the master unit is provided with a plurality of buttons, and each button is associated with the above-mentioned response on a one-to-one basis. For example, when the button “1” is depressed, “I will go” is accepted as a response. Also, when the button "2" is depressed, "Please wait for a while" is accepted as a response. When the master receives the response, the master outputs data indicating a response message to the second wireless device 10b. Here, the data indicating the response message is indicated by the above-mentioned button number, that is, "1" or "2".

  On the other hand, when the base unit does not receive a response even after a given period of time after notifying the call, it outputs data indicating a response message corresponding to "no response" to the second wireless device 10b. Data indicating a response message corresponding to “no response” is indicated by “0”, for example. When the IF unit 54 receives data indicating a response message from the parent device, the communication unit 50 transmits the data.

  The receiving unit 30 of the first wireless device 10a receives data indicating a response message at the time of the data receiving operation. The processing unit 26 displays data indicating a response message. That is, if the data indicating the response message is “0”, “No response” is displayed, and if the data indicating the response message is “1”, “Now” will be displayed, indicating the response message. If the data is "2", "Please wait" is displayed. When the data indicating the response message is “0”, the receiving unit 20 may repeatedly execute the above-described process. This corresponds to retransmission.

  8 (a) to 8 (c) are sequence diagrams showing still another communication procedure by the communication system 100 according to the second embodiment of the present invention. FIG. 8A shows the case where a response is made. The first wireless device 10a receives a call operation (S140). The first wireless device 10a transmits a call message to the second wireless device 10b (S142). The second wireless device 10b transmits an ACK to the first wireless device 10a (S144). The second wireless device 10b receives the response operation of the parent device (S146). The second wireless device 10b transmits a response message to the first wireless device 10a (S148). The first wireless device 10a displays a message (S150).

  FIG. 8 (b) shows the case where no response is made. The first radio apparatus 10a receives a call operation (S160). The first wireless device 10a transmits a call message to the second wireless device 10b (S162). The second wireless device 10b transmits an ACK to the first wireless device 10a (S164). The second wireless device 10b does not receive the response operation of the parent device (S166). The second wireless device 10b transmits a no-response notification to the first wireless device 10a (S168). The first wireless device 10a displays a message of no response (S170).

  FIG. 8 (c) shows a case where retransmission does not occur and retransmission occurs. The first radio apparatus 10a receives a call operation (S180). The first wireless device 10a transmits a call message to the second wireless device 10b (S182). The second wireless device 10b transmits an ACK to the first wireless device 10a (S184). The second wireless device 10b does not receive the response operation of the parent device (S186). The second wireless device 10b transmits a no-response notification to the first wireless device 10a (S188). The first wireless device 10a transmits a call message to the second wireless device 10b (S190).

  According to this embodiment, since the first wireless device is mounted on the electric lock remote control and the second wireless device is mounted on the electric lock, the state of the electric lock can be confirmed after a person operates the electric lock remote control . Also, even when an abnormality occurs in the electric lock, this can be notified. In addition, since the first wireless device is mounted on the temperature sensor and the second wireless device is mounted on the window opening device, when the temperature rises, the window is opened a little, and when the temperature drops, the window is closed a little be able to. Further, since the temperature sensor side can know the open / close state of the window, unnecessary transmission can be avoided when the window is fully opened or fully closed. In addition, since the first wireless device is mounted on the calling device and the second wireless device is mounted on the master unit, after pressing the button, the reception state is "go now" "wait a minute" It is possible to inform the customer etc. In addition, when there is no response, the call is resent, so the convenience can be improved.

  The outline of one aspect of the present invention is as follows. The first wireless device 10a is mounted on the electric lock remote control, the second wireless device 10b is mounted on the electric lock, and the communication unit 22 transmits data instructing locking or unlocking of the electric lock in the data transmission operation. During the data receiving operation, data indicating the state of the electric lock may be received.

  The first wireless device 10a is mounted on a temperature sensor, the second wireless device 10b is mounted on a window opening and closing device, and the communication unit 22 transmits data instructing opening and closing of a window during data transmission operation, and receives data In operation, data indicative of the state of the window may be received.

  The first radio apparatus 10a is mounted on the calling apparatus, and the second radio apparatus 10b is mounted on the master unit, and the communication unit 22 transmits data for instructing calling in the data transmission operation, and in the data reception operation. , May receive data indicating a response message.

  The present invention has been described above based on the embodiments. It is understood by those skilled in the art that this embodiment is an exemplification, and that various modifications can be made to their respective components or combinations of processing processes, and such modifications are also within the scope of the present invention. .

  In the first embodiment or the second embodiment, “number information”, “interval information”, and “section information” are transmitted as information related to the control content of intermittent reception. However, the present invention is not limited to this, and, for example, any two or less of the “number information”, “interval information”, and “section information” may be transmitted as information regarding the control content of intermittent reception. At that time, the information which is not transmitted is stored as a fixed value in the first wireless device 10a and the second wireless device 10b. According to this modification, the amount of information to be transmitted can be reduced.

  In the first or second embodiment, the data reception operation is performed by intermittent reception. However, not limited to this, for example, the data reception operation may be performed by continuous reception. According to this modification, timing control for data transmission from the second radio apparatus 10b to the first radio apparatus 10a can be simplified.

  10 radio apparatus, 20 reception unit, 22 communication unit, 24 control unit, 26 processing unit, 28 transmission unit, 30 reception unit, 50 communication unit, 52 control unit, 54 IF unit, 100 communication system.

Claims (4)

A data transmission operation for transmitting data instructing an operation of a device, a response confirmation reception operation for receiving a response confirmation from the device, and a data reception operation for receiving data indicating a state of the device Communication department,
And a control unit that causes the communication unit to switch the data transmission operation, the response confirmation reception operation, the data reception operation, and the stop state.
After the data is transmitted by the data transmission operation, the control unit switches the data transmission operation to the response confirmation reception operation, and waits for reception of the confirmation response over a period of the response confirmation reception operation.
The control unit switches the response confirmation receiving operation to the stop state when (i) does not receive the confirmation response in the period of the response confirmation receiving operation, and (ii) receives the confirmation response in the period of the response confirmation receiving operation. In this case, the response confirmation reception operation is switched to the data reception operation, and the reception of data is made to wait for the period of the data reception operation provided continuously after the period of the response confirmation reception operation ,
The communication unit executes the data reception operation intermittently.
The wireless device , wherein the communication unit transmits information associated with the control content of intermittent reception accompanying the data in the data transmission operation . A communication unit that executes a data transmission operation for transmitting data instructing operation, a response confirmation reception operation for receiving a response confirmation from the device, and a data reception operation for receiving data indicating a response message;
And a control unit that causes the communication unit to switch the data transmission operation, the response confirmation reception operation, the data reception operation, and the stop state.
After the data is transmitted by the data transmission operation, the control unit switches the data transmission operation to the response confirmation reception operation, and waits for reception of the confirmation response over a period of the response confirmation reception operation.
The control unit switches the response confirmation receiving operation to the stop state when (i) does not receive the confirmation response in the period of the response confirmation receiving operation, and (ii) receives the confirmation response in the period of the response confirmation receiving operation. In this case, the response confirmation reception operation is switched to the data reception operation, and the reception of data is made to wait for the period of the data reception operation provided continuously after the period of the response confirmation reception operation ,
The communication unit executes the data reception operation intermittently.
The wireless device , wherein the communication unit transmits information associated with the control content of intermittent reception accompanying the data in the data transmission operation .   The controller causes the data to be processed when (iii) data is received in the data reception operation period, and (iv) when the data processing is completed or when the data reception operation period is completed, The wireless device according to claim 1 or 2, wherein the data reception operation is switched to a stop state. 3. The wireless device according to claim 1, wherein the communication unit, in the response confirmation reception operation, receives information on control content of intermittent reception incidentally to the response confirmation.

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