JP5798142B2 - Communication apparatus and communication method - Google Patents

Description

  The present invention relates to a communication device and a communication method.

  An example of a technique for suppressing the output of unauthorized radio signals is described in Patent Document 1. In this technology, the transmission state abnormality determination unit monitors the time of transmission on state from the detection result of the transmission signal, and when this transmission on state continuation time (burst time) exceeds a preset threshold, In this configuration, transmission is forcibly stopped.

  An example of a similar technique is described in Patent Document 2. In this technique, the watchdog timer unit detects an abnormality of the control unit from the stop of the clock supply and stops the function of the power supply unit.

Japanese Patent Laid-Open No. 2003-46426 JP 7-212298 A

  The technique of Patent Literature 1 has a problem that even if an abnormal operation occurs, transmission cannot be stopped unless the transmission on-state duration (burst time) exceeds a preset threshold. Further, in the technique of Patent Document 2, the power supply is suddenly cut off during operation, and a reverse voltage is instantaneously applied to a circuit (for example, a semiconductor) that constitutes a transmission part, thereby causing a circuit failure. There is. That is, both techniques have a problem of low reliability.

  The objective of this invention is providing the communication apparatus and communication method which solved the said problem.

The communication device of the present invention includes a timer unit that starts counting when an abnormal event occurs in its own device, and a basic control unit that performs a reset operation to reset the interior when an abnormal event occurs , When an abnormal event occurs, the timer unit starts counting after the reset operation, and the main control unit sets the transmission / reception switching signal to a value indicating reception until the count value of the timer unit reaches a specified value; If the radio unit demodulates the signal and modulates the content to be transmitted to the transmission signal, and the transmission / reception switching signal is a value indicating transmission, the transmission signal from the radio unit is output to the antenna unit, and the transmission / reception switching signal is if the value indicating the reception, including a transmission and reception switching unit for outputting the received signal from the antenna unit to the radio section.

The communication method of the present invention includes a timer unit that starts counting when an abnormal event occurs in its own apparatus, and a basic control unit that performs a reset operation to reset the interior when an abnormal event occurs. control unit, the abnormal event occurs, the timer starts counting after the reset operation, until the count value of the timer section reaches a prescribed value, a reception switching signal, the value indicating the reception, radio The unit demodulates the received signal, modulates the content to be transmitted into the transmission signal, and the transmission / reception switching unit outputs the transmission signal from the radio unit to the antenna unit if the transmission / reception switching signal is a value indicating transmission. If the transmission / reception switching signal is a value indicating reception, the reception signal from the antenna unit is output to the radio unit.

  The present invention has the effect of high reliability.

It is a block diagram which shows the structure of the 1st Embodiment of this invention. It is a time chart which shows the operation | movement of the 1st Embodiment of this invention. It is a block diagram which shows the structure of the 2nd Embodiment of this invention. FIG. 4 is a circuit diagram illustrating an example of a configuration and connection of a transmission / reception switch in FIG. 3. It is a time chart which shows the operation | movement at the normal time of the 2nd Embodiment of this invention. It is a time chart which shows the operation | movement at the time of the unusual time of the 2nd Embodiment of this invention. It is a block diagram which shows the structure of the 3rd Embodiment of this invention. It is a circuit diagram which shows the structure and connection of the transmission / reception switch of FIG. FIG. 8 is a circuit diagram showing the configuration and connection of the transmission switch of FIG. 7. It is a block diagram which shows the structure of the 4th Embodiment of this invention. It is a circuit diagram which shows the structure and connection of the transmission switch of FIG. It is a block diagram which shows the structure of the 5th Embodiment of this invention. FIG. 13 is a circuit diagram showing the configuration and connection of the transmission switch of FIG. 12. It is a block diagram which shows the structure of the 6th Embodiment of this invention.

  Next, a first embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the first embodiment.

  Referring to FIG. 1, a communication device 100 according to the first embodiment includes a main control unit 200, a radio unit 300, and a transmission / reception switching unit 400. Main control unit 200 includes a timer unit 210. The transmission / reception switching unit 400 is connected to an antenna unit (a device that transmits and receives wirelessly). Timer unit 210 includes a timer function for counting.

  The transmission / reception switching unit 400 receives a reception signal from the antenna unit and outputs it to the radio unit 300. Radio section 300 demodulates the received signal and converts it into a digital signal. The main control unit 200 receives the converted digital signal and performs processing.

  Further, the main control unit 200 outputs a digital signal including the content to be transmitted to the radio unit 300. The radio unit 300 modulates a digital signal into an analog signal and outputs it to the transmission / reception switching unit 400 as a transmission signal. The transmission / reception switching unit 400 outputs a transmission signal to the antenna unit.

  Further, the main control unit 200 outputs a transmission / reception switching signal F0 to the transmission / reception switching unit 400. The transmission / reception switching signal F0 is not limited to one type of signal. The transmission / reception switching unit 400 performs either transmission or reception according to the transmission / reception switching signal F0.

  Next, the operation of the first embodiment configured as described above will be described in detail with reference to the drawings. FIG. 2 is a time chart showing the operation of the first embodiment.

  Referring to FIG. 2, when an abnormal event (for example, a failure or the like) occurs (time T1), main controller 200 forcibly sets transmission / reception switching signal F0 to a value for selecting reception. When the main control unit 200 detects an abnormal event (time T1 or after time T1), the main control unit 200 performs an operation for an abnormal event (for example, a reset operation), and the timer unit 210 counts. Start.

  The main control unit 200 continues to set the transmission / reception switching signal F0 to a value for selecting reception until the time when the count value of the timer unit 210 reaches a predetermined value set in advance (time T2). This specified value is set to a time sufficient to ensure a time during which the main control unit 200 can operate stably after the operation for the abnormal event of the main control unit 200. The transmission / reception switching unit 400 does not output a transmission signal to the antenna unit according to the transmission / reception switching signal F0.

  Next, the effect of the first embodiment will be described.

  The first embodiment is configured to inhibit transmission based on detection of an abnormal event by the main control unit 200, and inhibits transmission regardless of the length of the transmission on-state duration (burst time). Has the effect of being able to. Therefore, the first embodiment has an effect of high reliability.

  Further, the first embodiment has a configuration in which the power supply function is not stopped, and does not induce a circuit failure due to a reverse voltage, and thus has an effect of high reliability.

  Further, in the first embodiment, after an operation for an abnormal event (for example, a reset operation), after a sufficient time has passed to ensure a time during which the main control unit 200 can operate stably, Since the transmission is resumed, the reliability is high.

  Next, a second embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 3 is a block diagram showing the configuration of the second embodiment.

  Referring to FIG. 3, the communication device 100 according to the second embodiment includes a main control unit 200, a radio unit 300, a transmission / reception switching unit 400, and an antenna unit 500. The communication device 100 according to the second embodiment is an example of the communication device 100 according to the first embodiment. The communication device 100 includes a power supply unit for operation and a clock supply unit. However, since the features of the present invention are not involved, description thereof is omitted.

  In addition, the main control unit 200, the radio unit 300, the transmission / reception switching unit 400, and the combination switching signal K0 of the second embodiment are respectively the main control unit 200, the radio unit 300, and the transmission / reception of the first embodiment. It is an example of the switching part 400 and the transmission / reception switching signal F0.

  The main control unit 200 includes a timer unit 210, a basic control unit 220, a switching signal synthesis unit 230, and a storage unit 240. The timer unit 210 according to the second embodiment is an example of the timer unit 210 according to the first embodiment. The timer unit 210 has two timer functions. One is a watchdog timer function, and the other is a timer function for securing time.

  The transmission / reception switching unit 400 includes a transmission / reception switch 410.

  The antenna unit 500 transmits a signal from the transmission / reception switch 410 as a wireless signal, and outputs the received wireless signal to the transmission / reception switch 410. The transmission / reception switch 410 is connected to the wireless unit 300 through two independent lines. The transmission / reception switch 410 outputs the reception signal A0 to the radio unit 300 through one line. In addition, the transmission / reception switch 410 receives the transmission signal B0 from the wireless unit 300 through another line.

  The storage unit 240 stores data transmitted from the antenna unit 500, data received from the antenna unit 500, and the like. In addition, a configuration in which the basic control unit 220 performs control by executing a program stored in the storage unit 240 is possible. In addition, the communication device 100 can be configured to be firmware controlled. That is, a configuration in which the firmware program includes a procedure (step) for causing the main control unit 200, the radio unit 300, and the transmission / reception switching unit 400 to perform respective predetermined operations is possible. In addition, the storage unit 240 can store a specified value of the timer of the timer unit 210, and the specified value can be set in the timer unit 210.

  The basic control unit 220 outputs the data read from the storage unit 240 to the wireless unit 300 for transmission, and the data received from the wireless unit 300 (contents originally received by the antenna unit 500) to the storage unit 240. Store.

  The basic control unit 220 controls the wireless unit 300 by the wireless unit control signal C0, the switching signal combining unit 230 by the normal switching signal D0, and the timer unit 210 by the switching activation signal H0. The normal switching signal D0 is a signal for switching transmission / reception during normal transmission / reception.

  The switching signal synthesis unit 230 outputs the synthesis switching signal K0 to the transmission / reception switch 410. The timer unit 210 outputs the reset control signal G0 to the basic control unit 220 and the forced switching signal E0 to the switching signal synthesis unit 230.

  If the forced switching signal E0 is on, the switching signal combining unit 230 sets the combined switching signal K0 to a value indicating reception (off) regardless of the value of the normal switching signal D0. Further, when the forced switching signal E0 is off, the switching signal synthesis unit 230 sets the synthesis switching signal K0 to the same value as the value of the normal switching signal D0.

  FIG. 4 is a circuit diagram showing an example of the configuration and connection of the transmission / reception switch 410. Referring to FIG. 4, the transmission / reception switch 410 is a switch using a high frequency relay.

  A switch using a high-frequency relay and a high-frequency switch that is not used differ in isolation between terminals (attenuation amount of a radio signal when terminals are not connected). When a high frequency relay is used, since the isolation is high, the level of the radio signal can be lowered, and there is a high possibility that unnecessary radio waves will not be transmitted.

  If the combination switching signal K0 is on, the antenna unit 500 and the line of the transmission signal B0 are connected. If the combination switching signal K0 is off, the antenna unit 500 and the line of the reception signal A0 are connected. Further, the high frequency relay realizes high isolation between the line of the reception signal A0 and the line of the transmission signal B0.

  Next, the operation of the second embodiment configured as described above will be described with reference to the drawings.

  First, the operation during normal time (that is, when the transmission / reception switching unit 400 is not forced to receive) will be described. FIG. 5 is a time chart showing the normal operation of the second embodiment.

  Referring to FIG. 5, the basic control unit 220 outputs a switching activation signal H <b> 0 that turns on and off at a constant cycle to the timer unit 210. For example, a periodic routine of firmware periodically causes the basic control unit 220 to turn on and off the switching activation signal H0. The watchdog timer function of the timer unit 210 detects that the switching activation signal H0 is periodically turned on and off, and keeps the reset control signal G0 and the forced switching signal E0 off.

  At time Tm, the basic control unit 220 reads data to be transmitted from the storage unit 240, outputs the data to the radio unit 300, and instructs transmission by the radio unit control signal C0. The radio unit 300 converts data or the like into an analog signal and outputs it as a transmission signal B0 to the transmission / reception unit switching unit 400.

  At time Tm, the basic control unit 220 turns on the normal switching signal D0 to a value indicating transmission. Further, at time Tx, the basic control unit 220 turns off the normal switching signal D0 to a value indicating reception. Since the forced switching signal E0 remains off, the composite switching signal K0 has the same value as the normal switching signal D0.

  Next, a case where the transmission / reception switching unit 400 is forced to receive will be described. FIG. 6 is a time chart showing the operation in the non-normal time according to the second embodiment.

  Referring to FIG. 6, the basic control unit 220 turns off the switching activation signal H0 from time Tn. For example, an abnormal event occurs, the above-described periodic routine is not executed, and the switching activation signal H0 remains off (in this case, the basic control unit 220 does not generate an abnormal event at this time). Do not recognize). The watchdog timer function of the timer unit 210 detects that the switching activation signal H0 is not periodically turned on or off, and turns on the reset control signal G0 and the forced switching signal E0. At this point, the timer unit 210 has detected an abnormal event.

  When the reset control signal G0 is turned on, the basic control unit 220 resets the inside. When the reset is completed, the basic control unit 220 resumes periodically switching on and off of the switching activation signal H0 (time Ty). When the timer unit 210 detects that the switching activation signal H0 is periodically turned on or off, the timer unit 210 turns off the reset control signal G0, and the above-described timer function for securing time starts counting.

  Then, when the count value reaches a specified value, the timer unit 210 turns off the forced switching signal E0. That is, the timer unit 210 continues to turn on the forcible switching signal E0 until a fixed time elapses after the reset control signal G0 is turned off (that is, until the operation of the basic control unit 220 is stabilized). The switching signal E0 is turned off.

  During the period of time Tn to Tz, the normal switching signal D0 becomes undefined on and off due to the reset operation. The wireless unit 300 may also illegally output the transmission signal B0.

  Since the forced switching signal E0 is on during the time Tn to Tz, the switching signal combining unit 230 sets the combined switching signal K0 to a value indicating reception (off) during that time. Therefore, the transmission / reception switching unit 400 does not output an unauthorized transmission signal B0 to the antenna unit 500.

  Next, the effect of the second embodiment will be described. Since the second embodiment is an example of the first embodiment, the second embodiment has the same effects as the first embodiment.

  In addition, since the second embodiment uses a high-frequency switch using a relay for the transmission / reception switching unit 400, it has an effect of high reliability.

  Further, the second embodiment has an effect that the configuration of the wireless unit 300 is simple because it is possible to suppress transmission of an unauthorized transmission signal B0 without resetting the wireless unit 300.

  Next, a third embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 7 is a block diagram illustrating a configuration of the third embodiment.

  Referring to FIG. 7, in the third embodiment, the transmission / reception switching unit 400 includes a transmission / reception switch 410 and a transmission switch 420. That is, the third embodiment is an example of the second embodiment. The combination of the composite switching signal K0 and the forced switching signal E0 is an example of the transmission / reception switching signal F0.

  Next, the operation of the third embodiment will be described with reference to the drawings.

  FIG. 8 is a circuit diagram showing the configuration and connection of the transmission / reception switch 410 of FIG. FIG. 9 is a circuit diagram showing the configuration and connection of the transmission switch 420 of FIG.

  Referring to FIG. 8, the transmission / reception switch 410 is a high frequency switch. If the composite switching signal K0 is transmitted (ON), the transmission switch 420 and the line of the transmission signal B0 are connected. If the composite switching signal K0 is received (OFF), the transmission switch 420 and the line of the reception signal A0 are connected. Is connected.

  Referring to FIG. 9, the transmission switch 420 is a high frequency switch. If the forcible switching signal E0 is on, the connection between the transmission / reception switch 410 and the antenna unit 500 is disconnected, and the transmission / reception switch 410 and the ground are connected. If the forced switching signal E0 is off, the transmission / reception switch 410 and the antenna unit 500 are connected.

  Even if an unauthorized transmission signal is output from the transmission / reception switch 410, the transmission switch 420 can suppress the unauthorized transmission signal. That is, during the time Tn to Tz, the transmission signal is not output from the antenna unit 500 due to the operation of the transmission / reception switch 410.

  Therefore, in the third embodiment, a high-frequency switch (isolation is not always complete) that is less expensive than the second embodiment can be used for the transmission / reception switch 410. For example, unlike the second embodiment, there is no need to use a high-frequency switch using an expensive relay.

  Next, the effect of the third embodiment will be described. Since the third embodiment is an example of the second embodiment, the third embodiment has the same effect as the second embodiment. Further, the third embodiment has an effect that the economic efficiency is improved as compared with the second embodiment because the transmission / reception switch 410 can be configured at low cost.

  Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 10 is a block diagram illustrating a configuration of the fourth embodiment. Referring to FIG. 10, in the fourth embodiment, the transmission / reception switching unit 400 includes a transmission / reception switch 410 and a transmission switch 420. That is, the fourth embodiment is an example of the second embodiment.

  The transmission / reception switch 410 and the transmission switch 420 are the same as those of the third embodiment. However, unlike the third embodiment, the transmission switch 420 is provided in the middle of the line of the transmission signal B0. The transmission switch 420 is controlled by the composite switching signal K0.

  Next, the operation of the fourth embodiment will be described with reference to the drawings.

  FIG. 11 is a circuit diagram showing the configuration and connection of the transmission switch 420 of FIG. Referring to FIG. 11, the transmission switch 420 is connected so that the transmission signal B0 from the wireless unit 300 is output to the transmission / reception switch 410 if the combination switching signal K0 is transmission (ON).

  If the composite switching signal K0 is received (off), there is no connection between the radio unit 300 and the transmission / reception switch 410, and the line of the transmission signal B0 with the radio unit 300 is connected to the ground.

  Even if an unauthorized transmission signal B0 is output from the wireless unit 300, the transmission switch 420 can suppress the unauthorized transmission signal B0. That is, during the time Tn to Tz, the transmission signal is not output from the antenna unit 500 due to the operation of the transmission / reception switch 410.

  Therefore, in the fourth embodiment, a high-frequency switch (isolation is not necessarily complete) that is less expensive than that in the second embodiment can be used for the transmission / reception switch 410.

  Next, the effect of the fourth embodiment will be described. Since the fourth embodiment is an example of the second embodiment, the fourth embodiment has the same effect as the second embodiment. Further, the fourth embodiment has an effect of improving the economic efficiency as compared with the second embodiment because the transmission / reception switch 410 can be configured at low cost.

  Further, the fourth embodiment is configured such that the transmission switch 420 is not provided between the antenna unit 500 and the radio unit 300 with respect to the input of the reception signal A0. Therefore, compared to the third embodiment in which the transmission switch 420 is provided, there is an effect that the loss of the reception signal A0 is small.

  Next, a fifth embodiment will be described in detail with reference to the drawings.

  The fifth embodiment is an example of the fourth embodiment. FIG. 12 is a block diagram showing the configuration of the fifth embodiment. Referring to FIG. 12, the fifth embodiment does not include the switching signal synthesis unit 230 included in the fourth embodiment. The transmission / reception switch 410 is controlled by the normal switching signal D0, and the transmission switch 420 is controlled by the forced switching signal E0. The combination of the normal switching signal D0 and the forced switching signal E0 is an example of the transmission / reception switching signal F0.

  Next, the operation of the fifth embodiment will be described with reference to the drawings.

  FIG. 13 is a circuit diagram showing the configuration and connection of the transmission switch 420 of FIG. Referring to FIG. 12, the transmission switch 420 is connected so that the transmission signal B0 from the radio unit 300 is output to the transmission / reception switch 410 if the forced switching signal E0 is off.

  If the forcible switching signal E0 is on (for example, between times Tn and Tz in FIG. 6), there is no connection with the transmission / reception switch 410, and the line of the transmission signal B0 with the radio unit 300 is connected to the ground. The

  The transmission / reception switch 410 is controlled by the normal switching signal D0. However, since the transmission signal is not output from the transmission / reception switch 410 during the time Tn to Tz, an unauthorized transmission signal is not output to the antenna unit 500. Absent.

  Next, the effect of the fifth embodiment will be described. Since the fifth embodiment is an example of the fourth embodiment, the fifth embodiment has the same effects as the fourth embodiment. Further, since the fifth embodiment does not include the switching signal synthesis unit 230, the fifth embodiment has an effect that the amount of hardware is small and economical as compared with the fourth embodiment.

  Next, a sixth embodiment will be described in detail with reference to the drawings.

  FIG. 14 is a block diagram showing the configuration of the sixth embodiment. The communication device 100 according to the sixth embodiment is an example of the first embodiment.

  Referring to FIG. 14, the communication device 100 according to the sixth embodiment includes a switching signal combining unit with timer 250 instead of the switching signal combining unit 230 according to the second embodiment, and a reset unit instead of the timer unit 210. 260 is included. The switching signal synthesis unit with timer 250 includes a timer function in addition to the function of the switching signal synthesis unit 230 of the second embodiment.

  The reset unit 260 has a timer function deleted from the timer unit 210 of the second embodiment. The reset unit 260 outputs the reset control signal G0 to the basic control unit 220 and the switching signal combining unit with timer 250. The basic control unit 220 outputs a normal switching signal D0 to the switching signal combining unit with timer 250.

  Next, the operation of the sixth embodiment will be described in detail with reference to the drawings.

  The logic of each signal in the sixth embodiment is the same as the logic of each signal in the second embodiment. That is, the operation of each signal in the sixth embodiment is the same as the operation of each signal in the second embodiment shown in FIGS. The forced switching signal E0 is generated based on the reset control signal G0 in the switching signal combining unit with timer 250.

  The composite switching signal K0 is generated with the same logic as that of the second embodiment, based on the forced switching signal E0 and the normal switching signal D0. As described above, the sixth embodiment realizes the same function as that of the second embodiment. Moreover, the structure which combines 6th Embodiment and 3rd-4th Embodiment is also possible.

  Next, the effect of the sixth embodiment will be described. Since the sixth embodiment realizes the same function as the second embodiment, the sixth embodiment has the same effect as the second embodiment.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

[Appendix 1]
A main control unit that includes a timer unit that starts counting when an abnormal event occurs, and sets the transmission / reception switching signal to a value indicating reception until the count value of the timer unit reaches a specified value when the abnormal event occurs When,
A radio unit that demodulates the received signal and modulates the content to be transmitted into the transmitted signal;
If the transmission / reception switching signal is a value indicating transmission, the transmission signal from the radio unit is output to the antenna unit. If the transmission / reception switching signal is a value indicating reception, the reception signal from the antenna unit is output to the radio unit. A transmission / reception switching unit that outputs to the unit,
A communication device comprising:

[Appendix 2]
The main control unit
A basic control unit that outputs a switching start signal indicating the occurrence of an abnormal event and a normal switching signal for switching between transmission and reception during normal transmission and reception, and resets by a reset control signal;
When the switching activation signal indicates the occurrence of an abnormal event, the timer unit that outputs the reset control signal and turns on the forced switching signal until the count value reaches the specified value;
If the forcible switching signal is on, regardless of the value of the normal switching signal, the composite switching signal that is the transmission / reception switching signal is set to a value indicating reception, and if the forcible switching signal is off, the composite switching is performed. A switching signal synthesizer for outputting a signal having the same value as the value of the normal switching signal;
The communication apparatus according to appendix 1, characterized by comprising:

[Appendix 3]
The transmission / reception switching unit is
A transmission / reception switch connected to the radio unit and performing transmission / reception switching by the composite switching signal;
A transmission switch provided between the transmission / reception switch and the antenna unit, and disconnecting the antenna unit if the forced switching signal is on;
The communication device according to appendix 2, characterized by comprising:

[Appendix 4]
The transmission / reception switching unit is
A transmission / reception switch that performs switching of the output of the reception signal from the antenna to the radio unit and the output of the transmission signal to the antenna unit by the combined switching signal;
A value that is provided between the transmission / reception switch and the radio unit, and that outputs a transmission signal from the radio unit to the transmission / reception switch if the combination switching signal indicates transmission, and the combination switching signal indicates reception. If so, a transmission switch for cutting off the connection with the transmission / reception switch,
The communication device according to appendix 2, characterized by comprising:

[Appendix 5]
The main control unit
A basic control unit that outputs a switching start signal indicating the occurrence of an abnormal event and a normal switching signal that is a part of the transmission / reception switching signal for switching transmission / reception during normal transmission / reception, and resets by a reset control signal;
When the switching activation signal indicates the occurrence of an abnormal event, the reset control signal is output, and the forced switching signal that is a part of the transmission / reception switching signal is turned on and output until the count value reaches a specified value. A timer section;
Including
The transmission / reception switching unit is
A transmission / reception switch for switching the output of the reception signal from the antenna unit to the radio unit and the output of the transmission signal to the antenna unit by the normal switching signal;
Provided between the transmission / reception switch and the wireless unit, if the forced switching signal is off, the transmission signal from the wireless unit is output to the transmission / reception switch, and if the forced switching signal is on, the transmission / reception is performed. A transmission switch that disconnects from the switch;
The communication apparatus according to appendix 1, characterized by comprising:

[Appendix 6]
The main control unit outputs a switching activation signal indicating the occurrence of an abnormal event, and a normal switching signal for switching between transmission and reception during normal transmission and reception, and a basic control unit that resets by a reset control signal;
When the switching activation signal indicates the occurrence of an abnormal event, a reset unit that outputs the reset control signal;
When the reset control signal is received including the timer unit, the forcible switching signal is turned on until the count value reaches a specified value, and if the forcible switching signal is on, regardless of the value of the normal switching signal, A switching signal synthesizer with timer that outputs a combined switching signal that is a transmission / reception switching signal as a value indicating reception and outputs the combined switching signal with the same value as the value of the normal switching signal if the forced switching signal is off. When,
The communication apparatus according to appendix 1, characterized by comprising:

[Appendix 7]
When an abnormal event occurs, the main control unit including the timer unit that starts counting, when an abnormal event occurs, sets the transmission / reception switching signal to a value indicating reception until the count value of the timer unit reaches a specified value. ,
The radio unit demodulates the received signal, modulates the content to be transmitted into the transmitted signal,
The transmission / reception switching unit outputs the transmission signal from the radio unit to the antenna unit if the transmission / reception switching signal is a value indicating transmission, and from the antenna unit if the transmission / reception switching signal is a value indicating reception. Outputting a received signal to the radio unit;
A communication method characterized by the above.

[Appendix 8]
The basic control unit of the main control unit outputs a switching start signal indicating the occurrence of an abnormal event, and a normal switching signal for switching transmission and reception during normal transmission and reception, and performs a reset by a reset control signal,
The timer unit of the main control unit outputs the reset control signal when the switching activation signal indicates the occurrence of an abnormal event, and turns on the forced switching signal until the count value reaches the specified value,
When the forced switching signal is on, the switching signal combining unit of the main control unit sets the combined switching signal that is the transmission / reception switching signal to a value indicating reception regardless of the value of the normal switching signal, and If the switching signal is off, the composite switching signal is output with the same value as the value of the normal switching signal.
The communication method according to appendix 7, which is characterized by the above.

[Appendix 9]
A transmission / reception switch connected to the radio unit of the transmission / reception switching unit performs transmission / reception switching by the composite switching signal,
A transmission switch provided between the transmission / reception switch and the antenna unit of the transmission / reception switching unit disconnects the connection with the antenna unit if the forced switching signal is on;
The communication method according to appendix 8, which is characterized by the above.

[Appendix 10]
The transmission / reception switch of the transmission / reception switching unit performs switching of the output of the reception signal from the antenna to the radio unit and the output of the transmission signal to the antenna unit by the composite switching signal,
If the transmission switch of the transmission / reception switching unit provided between the transmission / reception switch and the wireless unit outputs the transmission signal from the wireless unit to the transmission / reception switch if the combined switching signal is a value indicating transmission, If the composite switching signal is a value indicating reception, the connection with the transmission / reception switch is disconnected.
The communication method according to appendix 8, which is characterized by the above.

[Appendix 11]
The basic control unit of the main control unit outputs a switching start signal indicating the occurrence of an abnormal event and a normal switching signal that is a part of the transmission / reception switching signal for switching transmission / reception during normal transmission / reception, and reset control Reset by signal
When the timer activation signal indicates the occurrence of an abnormal event, the timer unit outputs the reset control signal and turns on the forced switching signal that is a part of the transmission / reception switching signal until the count value reaches a specified value. Output,
The transmission / reception switch of the transmission / reception switching unit performs the switching of the output of the reception signal from the antenna unit to the radio unit and the switching of the output of the transmission signal to the antenna unit by the normal switching signal,
If the transmission switch of the transmission / reception switching unit provided between the transmission / reception switch and the wireless unit outputs the transmission signal from the wireless unit to the transmission / reception switch if the forced switching signal is OFF, the forced switching If the signal is on, disconnect from the transmission / reception switch.
The communication method according to appendix 7, which is characterized by the above.

[Appendix 12]
The basic control unit of the main control unit outputs a switching start signal indicating the occurrence of an abnormal event, and a normal switching signal for switching transmission and reception during normal transmission and reception, and performs a reset by a reset control signal,
The reset unit of the main control unit outputs the reset control signal when the switching activation signal indicates the occurrence of an abnormal event,
When the switching signal synthesis unit with timer of the main control unit including the timer unit receives the reset control signal, the forced switching signal is turned on until the count value reaches a specified value, and the forced switching signal is turned on. Regardless of the value of the normal switching signal, the composite switching signal that is the transmission / reception switching signal is set to a value indicating reception, and if the forcible switching signal is OFF, the composite switching signal is the same as the value of the normal switching signal. Output with the value of
The communication method according to appendix 7, which is characterized by the above.

DESCRIPTION OF SYMBOLS 100 Communication apparatus 200 Main control part 210 Timer part 220 Basic control part 230 Switching signal synthetic | combination part 240 Memory | storage part 250 Switching signal synthesis part with a timer 260 Reset part 300 Radio | wireless part 400 Transmission / reception switching part 410 Transmission / reception switch 420 Transmission switch 500 Antenna part A0 Reception Signal B0 Transmission signal C0 Radio unit control signal D0 Normal switching signal E0 Forced switching signal F0 Transmission / reception switching signal G0 Reset control signal H0 Switching start signal K0 Composite switching signal

Claims (10)

When an abnormal event occurs, including a timer unit that starts counting when an abnormal event occurs within its own device, and a basic control unit that performs a reset operation that resets the internal when an abnormal event occurs, The timer unit starts counting after the reset operation, and the main control unit sets the transmission / reception switching signal to a value indicating reception until the count value of the timer unit reaches a specified value;
A radio unit that demodulates the received signal and modulates the content to be transmitted into the transmitted signal;
If the transmission / reception switching signal is a value indicating transmission, the transmission signal from the radio unit is output to the antenna unit. If the transmission / reception switching signal is a value indicating reception, the reception signal from the antenna unit is output to the radio unit. A transmission / reception switching unit that outputs to the unit,
Communication apparatus according to claim including things. The main control unit
In the basic control unit, a switching start signal indicating the occurrence of an abnormal event, and a normal switching signal for switching transmission and reception during normal transmission and reception,
In the timer unit, when the switching activation signal indicates the occurrence of an abnormal event, the reset control signal is output, and the forced switching signal is turned on until the count value reaches the specified value,
In the basic control unit, the reset is performed by the reset control signal,
If the forced switching signal is on, the transmission / reception switching signal is set to a value indicating reception regardless of the value of the normal switching signal, and if the forced switching signal is off, the transmission / reception switching signal is set to the normal switching signal. The communication apparatus according to claim 1, further comprising a switching signal combining unit that outputs the same value as the value of. The transmission / reception switching unit is
A transmission / reception switch connected to the wireless unit and performing transmission / reception switching by the transmission / reception switching signal;
A transmission switch provided between the transmission / reception switch and the antenna unit, and disconnecting the antenna unit if the forced switching signal is on;
The communication apparatus according to claim 2, further comprising: The transmission / reception switching unit is
A transmission / reception switch that performs switching of the output of the reception signal from the antenna unit to the radio unit and the output of the transmission signal to the antenna unit by the transmission / reception switching signal;
A value that is provided between the transmission / reception switch and the radio unit, and if the transmission / reception switching signal is a value indicating transmission, outputs a transmission signal from the radio unit to the transmission / reception switch, and the transmission / reception switching signal is a value indicating reception If so, a transmission switch for cutting off the connection with the transmission / reception switch,
The communication apparatus according to claim 2, further comprising: The main control unit
The basic control unit outputs a switching start signal indicating the occurrence of an abnormal event and a normal switching signal that is a part of the transmission / reception switching signal for switching transmission / reception during normal transmission / reception, and is reset by a reset control signal. Done
When the switching activation signal indicates the occurrence of an abnormal event, the reset control signal is output, and the forced switching signal that is a part of the transmission / reception switching signal is turned on and output until the count value reaches a specified value. Including timer part,
The transmission / reception switching unit is
A transmission / reception switch for switching the output of the reception signal from the antenna unit to the radio unit and the output of the transmission signal to the antenna unit by the normal switching signal;
Provided between the transmission / reception switch and the wireless unit, if the forced switching signal is off, the transmission signal from the wireless unit is output to the transmission / reception switch, and if the forced switching signal is on, the transmission / reception is performed. A transmission switch that disconnects from the switch;
The communication apparatus according to claim 1, further comprising: The main control unit
In the basic control unit, a switching start signal indicating the occurrence of an abnormal event, and a normal switching signal for switching between transmission and reception during normal transmission and reception, and performing the reset by a reset control signal,
When the switching activation signal indicates the occurrence of an abnormal event, a reset unit that outputs the reset control signal;
When the reset control signal is received including the timer unit, the forcible switching signal is turned on until the count value reaches a specified value, and if the forcible switching signal is on, regardless of the value of the normal switching signal, A transmission / reception switching signal with a value indicating reception, and if the forced switching signal is off, the switching signal combining unit with timer for outputting the transmission / reception switching signal with the same value as the value of the normal switching signal; and
The communication apparatus according to claim 1, further comprising: The main control unit , which includes a timer unit that starts counting when an abnormal event occurs within its own device, and a basic control unit that performs a reset operation that resets the interior when an abnormal event occurs , When There occurs, the timer starts counting after the reset operation, until the count value of the timer section reaches a prescribed value, a reception switching signal, the value indicating the reception,
The radio unit demodulates the received signal, modulates the content to be transmitted into the transmitted signal,
The transmission / reception switching unit outputs the transmission signal from the radio unit to the antenna unit if the transmission / reception switching signal is a value indicating transmission, and from the antenna unit if the transmission / reception switching signal is a value indicating reception. Outputting a received signal to the radio unit;
A communication method characterized by the above. The basic control unit of the main control unit outputs a switching activation signal indicating the occurrence of an abnormal event, and a normal switching signal for switching transmission and reception during normal transmission and reception, and performs the reset by a reset control signal,
The timer unit of the main control unit outputs the reset control signal when the switching activation signal indicates the occurrence of an abnormal event, and turns on the forced switching signal until the count value reaches the specified value,
Switching signal combining unit of the main control unit, if the forced switching signal is ON, regardless of the value of the normal switching signal, and a value indicating the reception of said reception switching signal, the forced switching signal if off For example, the transmission / reception switching signal is output with the same value as the value of the normal switching signal.
The communication method according to claim 7. A transmission / reception switch connected to the radio unit of the transmission / reception switching unit performs transmission / reception switching by the transmission / reception switching signal,
A transmission switch provided between the transmission / reception switch and the antenna unit of the transmission / reception switching unit disconnects the connection with the antenna unit if the forced switching signal is on;
The communication method according to claim 8. The transmission / reception switch of the transmission / reception switching unit performs switching of the output of the reception signal from the antenna unit to the radio unit and the output of the transmission signal to the antenna unit by the transmission / reception switching signal,
If the transmission switch of the transmission / reception switching unit provided between the transmission / reception switch and the radio unit outputs the transmission signal from the radio unit to the transmission / reception switch if the transmission / reception switching signal is a value indicating transmission, If the transmission / reception switching signal is a value indicating reception, the connection with the transmission / reception switch is disconnected.
The communication method according to claim 8.