JP2008288671A - Wireless communication system - Google Patents

Abstract

【Task】
In a wireless device that does not have time information inside, when failure information generated for analysis of failure contents is stored in the storage unit, information on the occurrence time important for failure analysis cannot be obtained.
[Solution]
A data terminal device, a radio that transmits the data of the data terminal device through a radio channel, and a control station that receives the data from the radio via a base station radio, and the radio controls A controller and a storage unit, and the control unit records a function for checking a failure of the radio device and intermittent time information sent from either the control station or the data terminal device in the storage unit. When the failure of the wireless device occurs, the failure of the wireless device is stored in the storage unit in association with the time information stored in the storage unit.
[Selection] Figure 1

Description

  The present invention relates to a radio communication system, and more particularly to a radio communication system that records various faults occurring in a radio together with time information.

  2. Description of the Related Art Conventionally, a wireless communication system is known that collects various data from a data terminal device at a remote location to a control station via a wireless line using the wireless communication system. An example of such a wireless communication system will be described with reference to FIG. FIG. 6 shows a block diagram of a schematic configuration of a conventional wireless communication system. In FIG. 6, reference numeral 601 denotes an information terminal device. The information terminal device 601 includes a wireless device 602 and a data terminal device 603. Note that the wireless device 602 may be a mobile wireless device. The wireless device 602 is coupled to a data terminal device 603 that collects data through, for example, a wired transmission path 604, and transmits data transmitted from the data terminal device 603 to a base station via a wireless line. In FIG. 6, only one information terminal device 601 is shown, but the number is not limited to one, and a plurality of information terminal devices are generally used.

  Reference numerals 605-1,... 605-n denote base station radios. When a base station radio is represented, it is referred to as a base station radio 605. Reference numeral 606 denotes a control station, which transmits data from each base station radio 605 to the control station 606 through the wired transmission paths 607-1,... 607-n.

  The wireless communication system described above performs data communication between the control station 606 and the information terminal device 601. Here, the role of the wireless device 602 is to transmit data transmitted from the data terminal device 603 by, for example, RS232C wired to the base station wireless device 605 through a wireless line. The base station radio 605 outputs the data from the data terminal device 603 to the control station 606 via the RS232C wired transmission path 607.

  FIG. 8 shows a transmission format when data is transmitted from the information terminal device 601 to the base station radio 605. In FIG. 8, reference numeral 801 denotes a message type. Reference numeral 802 denotes a calling station ID, for example, the number or ID of the wireless device 602 of the information terminal device 601. Reference numeral 803 denotes a called station ID, for example, the number or ID of the base station radio 605-1. Reference numeral 804 denotes data transmitted from the data terminal device 603. This data format has a length of about 100 ms, and various digital data are transmitted by this repetition.

  On the other hand, in the case of data transmission from the control station 606 to the information terminal device 601, the base station radio 605 transmits data transmitted from the control station 606 by wire (for example, RS232C) to the information terminal device 601 through a wireless line. The wireless device 602 outputs the data from the control station 606 to the data terminal device 603 by wire. The data format when data is transmitted from the base station radio 605-1 to the radio 602 of the information terminal device 601 is similar to the data format shown in FIG. In this case, the calling station ID 802 is the number or ID of the base station radio 605-1, the called station ID 803 is the number or ID of the radio 602 of the information terminal apparatus 601, and the data 804 is the control station. Data transmitted from 606.

  In the wireless communication system described above, for example, the wireless device 602 of the information terminal device 601 is an important wireless device that connects the data terminal device 603 and the base station wireless device 605 with a wireless line. However, when a failure occurs due to a failure or the like, there is a problem that data from the data terminal device 603 is not transmitted, and reliability as a wireless communication system is lowered. Therefore, conventionally, for the wireless device 602, a method of detecting and recording a failure is used. This will be described in more detail.

  FIG. 7 is a block diagram for explaining a failure recording method of the wireless device 602. In FIG. 7, reference numeral 701 denotes a control unit (hereinafter abbreviated as MPU) such as a microcomputer that controls the whole radio 602, 702 denotes a memory connected to the MPU 701, and 703 denotes an LSI (large scale) having various functions. Integrated Circuit), 704 is a transmission / reception unit, 705 is an interface unit for connection between the MPU 701 and an external device (hereinafter abbreviated as an external IF unit), 706 is a battery that supplies power to the radio 602, Reference numeral 707 denotes a voltage monitoring unit that detects a drop in the power supply voltage, 708 denotes a power supply unit that converts the battery output into a voltage necessary for each unit, and 709 denotes a power switch.

  Next, the operation of the failure recording method of the wireless device 602 will be described. First, when the power switch 709 is turned on, a voltage from the battery 706 is supplied to the power supply unit 708, and power is supplied from the power supply unit 708 to each unit (not shown) of the wireless device 602. When the battery voltage is normal, the voltage monitoring unit 707 outputs a voltage check result OK (normal) to the MPU 701. For example, in the case of the voltage check result OK, a logic level (H) (H: high, the same applies hereinafter) is output. On the other hand, when the voltage check result is NG (abnormal), the logic level (L) (L: indicates low. The same applies hereinafter) is output to the MPU 701. When the voltage check result from the voltage monitoring unit is OK, the MPU 701 starts an initial process for each unit. Each unit is already supplied with power from the power supply unit 708. In the initial process, an initial process program for each unit is stored in advance in the MPU 701, for example, in a ROM (Read Only Memory). When power is supplied from the power supply unit 708 to each unit, the initial process for each unit is performed. The program is configured to run.

  Here, the initial process will be described. For example, the initial processing of the memory 702 is a so-called memory sum in which predetermined data is written to the memory 702 (WR data), this is read (RD data), and the recorded information is checked for correctness. Perform a check test. That is, when the information in the memory 702 is correct, the output of the memory sum check result is, for example, 0. If the information in the memory 702 is not correct, the output of the memory sum check result is not zero.

  Initial processing of the LSI 703 will be described. The wireless device 602 includes a transmission unit and a reception unit as will be described later. Recently, an LSI 703 such as an FPGA (Field Programmable Gate Array) may be used for the transmission unit and the reception unit. This FPGA has a self-diagnosis function, and when the power is turned on, various control signals are transmitted from the MPU 701 to start a self-check. Then, the result of the self check is output to the MPU 701. For example, if the self-check result is normal, the logic level H (normal) is output, and if it is abnormal, the logic level L (abnormal) is output.

  Similarly, the initial processing is executed for the transmission / reception unit 704. In the initial processing of the transmission / reception unit 704, for example, the MPU 701 outputs synthesizer setting data corresponding to the wireless communication frequency of the wireless device 602 to the transmission / reception unit 704. In the transmission / reception unit 704, the internal synthesizer is automatically set to a predetermined radio communication frequency based on the synthesizer setting data. Then, the MPU 701 is notified by a synth lock signal whether or not the set frequency is locked. For example, if the synthesizer is locked, a logic level H (normal) is output, and if it is not locked, a logic level L (abnormal) is output.

  As described above, the MPU 701 executes initial processing such as a sum check test for the memory 702 of the wireless device 602, confirmation of the self-diagnosis result of the LSI 703, confirmation of synthesizer lock of the transmission / reception unit 704, and all of these are normal. If so, the operation as a radio is started. However, if any one of the failures is found, the details of the failure are recorded in the memory 702.

  Next, the failure occurrence record will be described with reference to Table 1. Table 1 shows a failure occurrence coding table in the case where the content of the failure occurrence described above is stored in the memory 702, for example.

表１において、部署名は、例えば、上述したイニシャル処理を実行した部署（または、部品、ユニット等）の名前を示し、検出結果の表示は、例えば、電源の場合では、正常な場合、０１Ｈ、電圧低下の場合、０１Ｌをコード情報として記録する。メモリ７０２の場合では、正常な場合、０２Ｈ、異常の場合、０２Ｌをコード情報として記録する。また、ＬＳＩ７０３の場合では、正常な場合、０３Ｈ、異常の場合、０３Ｌをコード情報として記録する。同様に、送信／受信部７０４のシンセサイザの場合では、周波数がロックした場合、０４Ｈ（ロック）、周波数がアンロックの場合、０４Ｌ（アンロック）をコード情報として記録する。

In Table 1, the department name indicates, for example, the name of the department (or component, unit, etc.) that performed the initial process described above, and the display of the detection result is, for example, 01H, In the case of a voltage drop, 01L is recorded as code information. In the case of the memory 702, 02H is recorded as code information when normal, and 02L is recorded when abnormal. Also, in the case of the LSI 703, 03H is recorded as code information when normal, and 03L is recorded when abnormal. Similarly, in the case of the synthesizer of the transmission / reception unit 704, 04H (locked) is recorded as code information when the frequency is locked, and 04L (unlocked) is recorded when the frequency is unlocked.

  Next, a case where the failure content of the wireless device 602 is recorded in the memory 702 will be described with reference to Table 2. Table 2 is a failure history table when a failure occurs, and is stored in the memory 702.

表２において、アドレスは、メモリ７０２内の番地を示し、かつ、障害の発生順にメモリ７０２に記録されている状態を示している。即ち、障害の発生順序は、Ａ０００、Ａ００１、・・・Ａ００５、・・・の順序で発生したことを表している。部署は、障害のチェック個所を示す。チエック結果は、先に説明した正常（Ｈ）、異常（Ｌ）のコード情報で記録されている。なお、チェック結果には、正常、異常のコード情報の外にチェック回数も記録されている。例えば、０１Ｈ００１の下３桁の“００１”は、第１回目の電源チェックを表している。同様に、０２Ｌ００２は、第２回目のメモリチェックを表している。障害の内容は、先に説明したチェック結果の障害内容を表示している。例えば、アドレスＡ０００から順に、割当てられた障害記憶エリアに障害が発生した順に順次記憶される。表２の例では、最初にＡ００１のＬＳＩ自己診断エラーが発生し、次に、Ａ００４のメモリの異常が発生したことを示している。なお、表２では、正常な場合もメモリ７０２に記録した場合を示しているが、異常のみを記録することもできる。

In Table 2, an address indicates an address in the memory 702 and indicates a state recorded in the memory 702 in the order of occurrence of the failure. That is, the order of occurrence of faults indicates that they occurred in the order of A000, A001,... A005,. The department indicates the check point of the failure. The check results are recorded with the normal (H) and abnormal (L) code information described above. In the check result, the number of checks is recorded in addition to the normal and abnormal code information. For example, “001” in the last three digits of 01H001 represents the first power check. Similarly, 02L002 represents the second memory check. The content of the failure displays the failure content of the check result described above. For example, the addresses are stored in order from the address A000 in the order in which the failure occurred in the assigned failure storage area. In the example of Table 2, it is shown that an LSI self-diagnosis error A001 has occurred first, and then an abnormality in the memory A004 has occurred. Although Table 2 shows a case where data is normal and a case where data is recorded in the memory 702, only an abnormality can be recorded.

  Since the failure occurrence content is recorded in the memory 702 as the failure history table shown in Table 2 in this way, for example, the operation unit (not shown) of the control station 606 is operated to operate the memory 702 of the wireless device 602. The failure history table shown in Table 2 is read out, and the failure content of the wireless device 602 is displayed on the display unit (not shown) of the control station 606, so that the operator can grasp the failure content of the wireless device 602. Can do. Alternatively, it is also possible to connect a personal computer or the like to the external IF unit 705 and read out and confirm the failure content stored in the memory 702. In addition, when the wireless device 602 has a display unit (not shown) in the main body, it is possible to display the failure content on the display unit. Therefore, when a failure occurs in communication between the data terminal and the control station due to some cause in the system, the system is checked by checking the failure history table stored in the radio as a means of failure cause analysis. It becomes possible to discover obstacles.

  By the way, generally, a small-scale wireless device using a microcomputer or the like as a control unit generally does not have a timer for generating time information inside the wireless device. Since the radio of the information terminal device of the above-described radio communication system does not have a timer for generating time information, the fault information that has occurred is stored in the memory in the order in which the faults occurred. And when analyzing the failure history etc. and taking measures against the failure, it is possible to roughly analyze according to the order of the failures stored in the memory, but there is information about the failure occurrence time important for failure analysis. Absent. For example, since it is difficult to respond to the time when a system failure occurs and the contents of the failure of the radio, it is not possible to adequately answer the customer's response to the system failure. Therefore, realization of a wireless communication system capable of adding time information with a simple configuration is desired.

JP 2005-203999 A

  In conventional wireless communication systems, when troubleshooting is performed by analyzing failure history, etc., an approximate analysis can be performed according to the order of failures stored in the memory. Since there is no information about the time, it is difficult to correlate the time when a system failure occurs with the contents of the wireless device failure, and the customer's response to the system failure cannot be fully answered.

  The objective of this invention is providing the radio | wireless communications system which can respond to a system failure.

  Another object of the present invention is to provide a wireless communication system capable of obtaining time information with a simple configuration.

  Still another object of the present invention is to provide a wireless communication system capable of reducing the burden on a control unit such as a microcomputer and associating occurrence of a failure with time information.

  The wireless communication system of the present invention includes a data terminal device, a wireless device that transmits data of the data terminal device through a wireless line, and a control station that receives the data from the wireless device via a base station wireless device. The wireless device includes a control unit and a storage unit, and the control unit checks the failure of the wireless device and intermittent time information transmitted from either the control station or the data terminal device. Is stored in the storage unit, and the failure of the wireless device is stored in the storage unit in association with the time information stored in the storage unit when the failure of the wireless device occurs.

  In the wireless communication system of the present invention, when the failure of the wireless device is stored in the storage unit in association with the time information stored in the storage unit when the failure of the wireless device occurs, the time information is stored in advance. It is time information at a predetermined time interval.

  In the wireless communication system of the present invention, the control unit further includes a clock counter, controls the clock counter based on the time information, and counts the clock counter when a failure occurs in the radio. Is stored in the storage unit together with the failure information of the wireless device.

  As described above, according to the present invention, in a wireless device that does not have time information inside the wireless device, it is possible to associate failure occurrence time information important for failure analysis and store it together with the content of the failure, Since the clue about the failure analysis can be increased, a wireless communication system capable of dealing with the system failure can be realized. In addition, a wireless communication system capable of obtaining time information with a simple configuration can be realized, and further, the burden on a control unit such as a microcomputer can be reduced, and the occurrence of a failure can be associated with time information.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a block diagram of a schematic configuration of an embodiment of the present invention. In FIG. 1, 101 indicates a wireless device, 102 indicates a control station, and 103 indicates a timer. In addition, the same code | symbol is attached | subjected to the same thing as FIG.

  The wireless communication system shown in FIG. 1 performs data communication between the control station 102 and the information terminal device 601, but the control station 102 includes a timer device 103. The timer device 103 operates in synchronization with the standard time. As a method of operating in synchronization with the standard time, there is a method of synchronizing with time information from a conventionally known GPS (Global Positioning System) or a method of counting accurate time with a radio clock.

  FIG. 3 shows a block diagram of a schematic configuration of the control station 102 and the base station radio 605-1 used in the present invention. 3, the control station 102 includes a control unit 301, a storage unit 302, a display unit 303, and an operation unit 304. The control unit 301 includes a timer device 103. The base station radio 605-1 includes a transmission radio 305 and a reception radio 306. FIG. 3 shows a case where the control station 102 and the base station radio 605-1 are coupled by a transmission path 607-1. However, the control station 102 and the base station radio 605-1 are , It can also be configured integrally.

  FIG. 4 is a block diagram illustrating a schematic configuration of the information terminal device 601. Note that the radio shown in FIG. 4 uses, for example, a pair wave of an uplink radio carrier f and a downlink radio carrier F. In FIG. 4, 401 is an antenna for performing transmission / reception with the base station radio 605-1, 402 is a transmission / reception changeover switch, and 403 is a reception unit. The receiving unit 403 includes a high frequency unit, an intermediate frequency unit 404, and a received signal processing unit 405. In addition, this receiving part is comprised by LSI like FPGA, for example. Reference numeral 406 denotes a frequency synthesizer, which determines the frequencies of the reception unit and the transmission unit under the control of the MPU 201. Reference numeral 407 denotes a transmission unit, which includes a high frequency unit, an intermediate frequency unit 408, and a transmission signal processing unit 409. Note that this transmission unit is also composed of an LSI such as an FPGA. Reference numeral 410 denotes a display unit, and 411 denotes an operation unit. 201 is an MPU that controls the wireless device 101, 202 is a RAM, 203, 204, and 205 are voltage terminals for voltages supplied to the respective units of the wireless device 101, and are different, for example, 3V, 5V, and 8V. Voltage terminal. In FIG. 4, the connection destination is omitted. Moreover, the same code | symbol is attached | subjected to the same thing as FIG. 1 and FIG.

  First, in the case of data transmission from the control station 102 to the information terminal device 601, the base station radio 605 transmits data and time information sent from the control station 102 by wire (for example, RS232C) to the information terminal device 601 through a wireless line. Send. When wireless device 101 receives time information and data from control station 102, MPU 201 of wireless device 101 stores time information in RAM (Random Access Memory) 202 (generally a storage unit). The data is stored, and the data is output to the data terminal device 603 via the wire 604.

  FIG. 5 shows a data format when time information and data are transmitted from the base station radio 605-1 to the radio 101 of the information terminal device 601. In FIG. 5, reference numeral 501 denotes a message type. 502 is the calling station ID, for example, the number or ID of the base station radio 605-1. Reference numeral 503 denotes a called station ID, for example, the number or ID of the wireless device 101 of the information terminal device 601. Reference numeral 504 denotes data transmitted from the control station 102. Reference numeral 506 denotes time information sent from the timer device 103 of the control station 102. The data format has a length of about 100 ms, and various digital data are transmitted by repeating this.

  Now, how to send the above time data 506 will be described. For example, when transmitting some data from the control station 102 to the radio device 101 from the radio station 605-1, the time data 506 is transmitted using a part of the bits of the data 504. There are cases where the time information 506 of the timer 103 is transmitted at a predetermined time interval irrespective of the case and the data transmission.

  On the other hand, in the case of data transmission from the information terminal device 601 to the control station 102, data transmitted from the data terminal device 603 via a wire (for example, RS232C) 604 is transmitted to the base station wireless device 605-1 via a wireless line using the wireless device 101. Send to. The base station wireless device 605-1 outputs the transmitted data to the control station 102 by wire. Note that the data format when data is transmitted from the radio 101 of the information terminal device 601 to the base station radio 605-1 is similar to the data format shown in FIG. 5, but the time information 506 is unnecessary. In this case, the calling station ID 502 is the number or ID of the wireless device 101 of the information terminal apparatus 601, and the called station ID 503 is the number or ID of the base station wireless device 605-1. Data 504 is data sent from the data terminal device 603.

  Here, acquisition of time information of the wireless device 101 shown in FIG. 4 will be described. As described above, since the wireless device 101 used in the wireless communication system of the present invention does not include a timer device that generates time information, the time information sent from the control station as described above. Is remembered. Based on this time information, the contents of the failure of the wireless device and the failure occurrence time information important for failure analysis are associated and stored. This will be described in detail below.

表３は、統制局１０２のタイマー装置１０３の時刻と無線機１０１のＲＡＭ（Random Access Memory）２０２に記憶される時刻との関係を示しており、“統制局タイマーの時刻”は、統制局１０２の制御部３０１のタイマー１０３の時刻を示し、“無線機のＲＡＭに記録される時刻”は、例えば、無線機１０１のＲＡＭ２０２（一般的には、記憶部）に記録される時刻、即ち、時刻情報テーブルを示している。そして、統制局１０２のタイマー装置１０３は、標準時間を順次、計時している。例えば、・・・2007年7月20日12時00分00秒から１秒刻みに時刻をカウントしている。これに対して統制局１０２から基地局無線機６０５−１を介して送られる時刻情報は、例えば、５分間隔の周期的な時間間隔、2007年7月20日12時00分00秒、2007年7月20日12時05分00秒、2007年7月20日12時10分00秒、・・・で無線機１０１に送信されるので、無線機１０１のＭＰＵは、これら時刻情報を検出してＲＡＭ２０２に記憶すると、表３の“無線機のＲＡＭに記録される時刻”に示すような時刻情報テーブルとなる。なお、時刻情報の送信は、先に図５で説明した通りである。

Table 3 shows the relationship between the time of the timer device 103 of the control station 102 and the time stored in a RAM (Random Access Memory) 202 of the wireless device 101. The “time of the control station timer” is the control station 102. The time recorded in the RAM of the wireless device 101 is, for example, the time recorded in the RAM 202 (generally a storage unit) of the wireless device 101, that is, the time An information table is shown. The timer device 103 of the control station 102 sequentially measures the standard time. For example: Time is counted in 1 second increments from 12:00:00 on July 20, 2007. On the other hand, the time information sent from the control station 102 via the base station radio 605-1 is, for example, a periodic time interval of 5 minutes, July 20, 2007, 12:00:00, 2007 July 20, 2007 12:05:00, 2007/07/20 12:10:00, and so on. The MPU of the radio 101 detects these time information. When stored in the RAM 202, the time information table shown in “Time recorded in the RAM of the wireless device” in Table 3 is obtained. Note that the transmission of time information is as described above with reference to FIG.

  Next, the failure recording method of the wireless device 101 of the present invention will be described with reference to FIG. FIG. 2 is a block diagram for explaining a failure recording method of the wireless device 101. Since the failure detection method has been described in detail with reference to FIG. 7, it will be briefly described here, and failure detection and time information addition will be described.

  First, when the power switch 709 is turned on, the voltage from the battery 706 is supplied to the power supply unit 708, and power is supplied from the power supply unit 708 to each unit (shown in FIG. 4) of the wireless device 101. For example, in this embodiment, 13.8V is used as the battery voltage to determine whether or not the battery voltage is normal. Therefore, the voltage monitoring unit 707 sets a threshold value at a voltage that is reduced by about 10%. In the case of a decrease within%, the voltage monitoring unit 707 outputs a voltage check result OK (normal) to the MPU 201. For example, in the case of the voltage check result OK, a logic level (H) (H: high, the same applies hereinafter) is output. On the other hand, when the voltage drops by 10% or more, it is determined as abnormal, and a logic level (L) (L: indicates low. The same applies hereinafter) is output to the MPU 201.

  Here, when the power switch 709 is turned on and the voltage check result in the voltage monitoring unit 707 is normal, the voltage monitoring unit 707 outputs a logic level (H) to the CPU 201. In the CPU 201, the voltage check result input from the voltage monitoring unit 707 is accumulated in the memory 702, and at the same time, the time information recorded in the RAM 202 is read and recorded in association with the voltage check result. This is shown in Table 4.

表４は、ＲＡＭの時刻情報と障害チェック結果を関連付けてメモリ７０２に記録した時刻情報と障害検出結果との関係を示すテーブルである。例えば、上記のように電圧監視部７０７での電圧チェック結果がＣＰＵ２０１に入力された時点が、ＲＡＭ２０２に記録された時刻、例えば、2007.7.20.12.00.00（2007年7月20日、12時00分00秒を意味する。以下同様）以降であれば、Ｎｏ．１の時刻枠に対応付けて記録する。即ち、時間枠Ｎｏ．１は、2007年7月20日、12時00分00秒以降で、2007年7月20日、12時05分00秒以前の検出結果を対応付ける時間枠であり、アドレスは、例えば、Ａ０００から開始し、チェック結果を書込む毎に１つずつ更新する。部署は、この場合、電源部、チェック結果のコードは、先に説明した０１Ｈ００１が記憶され、障害内容の説明には、第１回目正常が記憶される。

Table 4 is a table showing the relationship between the time information recorded in the memory 702 in association with the RAM time information and the failure check result, and the failure detection result. For example, the time when the voltage check result in the voltage monitoring unit 707 is input to the CPU 201 as described above is the time recorded in the RAM 202, for example, 2007.7.20.12.00.00 (July 20, 2007, 12:00 It means 00 seconds. Record in association with one time frame. That is, the time frame No. 1 is a time frame for associating detection results before July 20, 2007, 12:00:00 and July 20, 2007, 12:05:00, and the address is, for example, from A000 Start and update one each time you write the check result. In this case, the department stores the power supply unit and the check result code of 01H001 described above, and the description of the failure content stores the first normality.

  Subsequently, when the voltage check result from the voltage monitoring unit 707 is OK, the MPU 201 starts an initial process for each unit. First, the first initial process of the memory 702 is executed. That is, predetermined data is written into the memory 702 (WR data), read out (RD data), and a sum check test is performed to check whether the recorded information is correct. If the information in the memory 702 is not correct, the output of the memory sum check result is not zero. If this point is after July 20, 2007, 12:00:00 and before July 20, 2007, 12:05:00, as shown in Table 4, the address: A001, Department : Memory, check result: 02L001, content of failure: first time (abnormal) is recorded in time frame N0.1.

  Next, in the initial processing of the LSI 703, for example, since the FPGA has a self-diagnosis function, various control signals are transmitted from the MPU 701 when the power is turned on, and the self-check is started. Then, the result of the self check is output to the MPU 701. For example, if the self-check result is abnormal, the logic level L (abnormal) is output. If this output time is after July 20, 2007, 12:10: 00 and before July 20, 2007, 12:15:00, as shown in Table 4, the address: A002, Department: LSI, check result: 03L001, content of failure: first time (self-diagnosis error) is recorded in time frame N0.3.

  Similarly, the initial processing is executed for the transmission / reception unit 704. In the transmission / reception unit 704, the internal synthesizer is automatically set to a predetermined radio communication frequency based on the synthesizer setting data. Then, the MPU 701 is notified by a synth lock signal whether or not the set frequency is locked. For example, if the synthesizer locks, the logic level H (normal) is output. If this output time is after July 20, 2007, 12:10: 00 and before July 20, 2007, 12:15:00, as shown in Table 4, the address: A003, Department: synthesizer, check result: 04H001, content of failure: first frequency lock is recorded in time frame N0.3. Similarly, the second and subsequent times are sequentially recorded. The time frame No. 2 “None” is displayed after July 20, 2007, 12:05:00, and before July 20, 2007, 12:10: 00, the failure check result is output to the MPU 201. It shows that there was not.

  As described above, the MPU 201 performs initial processing such as a voltage check of the power supply unit 708, a sum check test for the memory 702 of the wireless device 101, a self-diagnosis of the LSI 703, a synthesizer lock of the transmission / reception unit 704, etc. If is normal, the operation as a wireless device is started. However, if any one of the failures is found, the details of the failure are recorded in the memory 702. In Table 4, all the normal and abnormal information by the initial processing of each department is stored, but it can also be stored only in the case of an abnormality. The time information in the RAM is also stored with a time frame determined every 5 minutes in this embodiment, but various changes can be made according to the scale and purpose of the wireless communication system. Also, the check items for failures are not limited to the embodiments of the present invention.

  As described above, the present invention has been described in detail. In the present invention, even in the case of a wireless device that does not have a timer device, the time information of the control station 102 and the failure check result are associated with each other in the memory (or storage unit) of the wireless device 101. ) 702. Since the failure occurrence content is recorded as the failure history table shown in Table 4 in the storage unit 702 in this way, for example, the content of the failure history table shown in Table 4 is periodically transmitted from the wireless device 101 to the base station radio. The failure history table of Table 4 in the storage unit 702 of the wireless device 101 is read out by transmitting to the control station 102 via the device 605 or by operating the operation unit 304 of the control station 102, and the display unit 303 of the control station 102. And the failure can be analyzed in relation to the time information, and the operator can grasp the content of the failure of the wireless device 101. It is also possible to connect a personal computer or the like to the external IF unit 705 and read and confirm the failure content stored in the storage unit 702. Furthermore, the failure content can be displayed on the display unit 410 of the wireless device 101 main body. Therefore, when a failure occurs in communication between the data terminal and the control station due to some cause in the system, the system is checked by checking the failure history table stored in the radio as a means of failure cause analysis. It becomes easy to find the obstacles. In the above embodiment, the case where the time information of the control station 102 is used has been described. However, the present invention is not limited to this. For example, many data terminal devices have standard time information. It is also possible to easily obtain the time information from the terminal device having the time information and store it in the RAM 202 of the wireless device 101.

  In this way, failure information can be recorded in association with time information in units of time frames. Therefore, since the recording of time information is performed intermittently or periodically, there is a feature that the burden on the MPU can be greatly reduced as compared with the case where time information is continuously recorded. In particular, since the functions of the MPU are limited as much as possible in a small-scale wireless device, such a wireless device is extremely advantageous.

  Next, another embodiment of the present invention will be described with reference to FIG. In the embodiment described above, the case has been described in which failure information is recorded in association with time information in units of time frames stored in the RAM. However, when the time frame is 5 minutes or 10 minutes, it is too much. Can be too rough. In such a case, it may be possible to shorten the time frame to 1 minute or 2 minutes, but if the time frame is shortened, the burden on the CPU increases. The embodiment shown in FIG. 9 shows an embodiment in which an approximate time is set with a simple configuration.

  In FIG. 9A, reference numeral 901 denotes a clock pulse generator. The clock pulse generator 901 is provided in the MPU 201 of the wireless device 101, for example, and generates a clock pulse for operating the wireless device 101. The output of the clock pulse generator 901 is input to the counter 902. A counter 902 is also provided in the CPU 201. The counter 902 is provided with a counter / reset terminal 903. The output of the counter 902 is input to the RAM 202.

  Next, the operation of this circuit will be described with reference to FIG. In FIG. 9B, reference numeral 904 denotes a clock train from the clock pulse generator 901. The counter 902 counts the clock pulses from the clock pulse generator 901 as 0, 1, 2, 3,. The counter 902 is reset by a reset input from the counter / reset terminal 903, and again counts 0, 1, 2, 3,... And repeats this operation. Here, the reset input corresponds to time frame information such as 12:00:00 shown in Table 4, 12:05:00, and so on. That is, when the MPU 201 detects time information sent from the control station 102, for example, when detecting 12:00:00, this time information is recorded in the RAM 202 and a pulse is applied to the counter / reset terminal 903. The counter 902 is reset. As a result, the counter 902 starts counting from zero. For example, the state of count 0 is assumed to be 0 pulses in FIG. 9B and time information 12.00.00. In the embodiment shown in FIG. 9, the clock pulse generator 901 is described as generating 60 pulses / second, for example. However, the present invention is not limited to this.

  For example, as described above, the power switch 709 is turned on, and the voltage check result in the voltage monitoring unit 707 is output to the MPU 201. If the count value of the pulse of the counter 902 at this time is 5400, since the time at that time is approximately 12.01.30, this time (or the number of pulses of 5400) is stored in the memory 702 together with the voltage check result. Note that the number of pulses or time information corresponding to the number of pulses is referred to as information related to the count value. Similarly, the check result in the memory 702 is input to the MPU 201. If the count value of the pulse of the counter 902 at this time is 15660, the time at that time is approximately 12.04.21. Therefore, information related to the count value (time or the number of pulses of 15660) is checked in the memory 702. At the same time, it is stored in the memory 702. With this configuration, the failure information can be recorded in association with the approximate time information without having a timer in the wireless device 101, which is effective for analysis of failure information.

  Although the present invention has been described in detail above, the present invention is not limited to the embodiments of the radio communication system described herein, and can be widely applied to radio communication systems other than those described above. Needless to say.

The block diagram of schematic structure of one Example of this invention is shown. It is a block diagram for demonstrating the failure recording method of the radio | wireless machine of this invention. The block diagram of schematic structure of the control station and base station which are used in one Example of this invention is shown. The block diagram of schematic structure of the radio | wireless machine used by one Example of this invention is shown. It is a figure for demonstrating the signal format used by one Example of this invention. The block diagram of schematic structure of an example of the conventional radio | wireless communications system is shown. It is a block diagram for demonstrating the failure recording method of the conventional radio | wireless machine. It is a figure for demonstrating the signal format used with the conventional radio | wireless communications system. It is a figure for demonstrating another Example of this invention.

Explanation of symbols

  101, 602: Radio unit, 102, 606: Control station, 103: Timer, 201, 701: MPU, 202: RAM, 203, 204, 205: Voltage terminal, 301: Control unit, 302: Storage unit, 303, 410 : Display unit, 304, 411: operation unit, 305: transmission radio, 306: reception radio, 401: antenna, 402: changeover switch, 403: reception unit, 404, 408: high frequency unit, intermediate frequency unit, 405: reception signal processing unit, 406: frequency synthesizer, 407: transmission unit, 409: transmission signal processing unit, 601: information terminal device, 603: data terminal device, 604, 607: transmission path, 605: base station radio, 702: Memory, 703: LSI, 704: Transmission / reception unit, 705: External IF unit, 706: Battery, 707: Voltage monitoring unit, 708: Electricity Part, 709: switch, 901: clock pulse generator, 902: Counter 903: reset terminal.

Claims (2)

  A data terminal device, a radio that transmits the data of the data terminal device through a radio channel, and a control station that receives the data from the radio via a base station radio, and the radio controls A controller and a storage unit, and the control unit records a function for checking a failure of the radio device and intermittent time information sent from either the control station or the data terminal device in the storage unit. A wireless communication system, wherein a failure of the wireless device is stored in the storage unit in association with the time information stored in the storage unit when a failure of the wireless device occurs.   2. The radio communication system according to claim 1, wherein the control unit further includes a clock counter, controls the clock counter based on the time information, and counts the clock counter when a failure occurs in the radio. A wireless communication system, wherein information related to the wireless communication device is stored in the storage unit together with failure information of the wireless device.

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