JP2001333026A - Data processor and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an unatlemded data processor to operate for a long period by reducing the power consumption in a standby mode installed at a remote place and is provided with a function, etc., for collecting data. SOLUTION: This data processor is provided with a pocket pager receiving function 20 capable of drastically suppressing standby power in addition to a satellite communication system 14 of high power and high function, and the communication system 14 can be started by a command received by the receiving function 20. Since the system 14 can make power consumption zero in the standby mode in this way, the standby power can be reduced almost to the standby power of the receiving function 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing apparatus installed in a remote place or the like and a control method therefor.

[0002]

2. Description of the Related Art At present, many data processing devices such as unmanned automatic measurement and automatic monitoring devices are installed in Japan or all over the world. Such equipment must be installed in a remote place where the power supply environment or communication environment is not necessarily maintained. The communication environment can be solved by transmitting and receiving data via wireless. In addition, the environment of the power supply can be solved by a method of combining a solar cell and a battery. However, since the density of electric energy obtained from sunlight or the like is small and not always stable, it is important to pay close attention to its use and not waste it. On the other hand, in a device installed in a remote place, a communication device with a large output is required to transmit and receive data wirelessly, and power consumption increases. Therefore, in an unmanned data processing device installed in a remote place, how to reduce power consumption while using a high-output communication device is a major issue.

When using such a data processing device,
Conventional monitoring or observation methods generally employ the following two methods. First, there is a method in which power is constantly supplied to a circuit of a part of the device, the device is started at a predetermined time by a clock function provided there, and a measurement result or a monitoring result is sent to a monitoring device. According to this method, a high-output communication device can be operated only when data is transmitted or received periodically for a short period of time at a preset time, so that power consumption can be reduced. However, data cannot be transmitted / received until a preset time is reached, so that the flexibility relating to data transmission / reception is low.

Another method is to call individual data processing devices from a center that manages the data processing devices and send back data accordingly. Also in this method, the power of the communication device need only be increased when data is transmitted and received after being called, so that power consumption can be reduced. Also,
Since data can be transmitted and received by calling, the timing can be set flexibly. It is best for monitoring / observation to provide necessary data when requested, and from that point of view, it is desirable that data can be transmitted / received in response to a call.

[0005]

However, in a data processing apparatus for transmitting and receiving data in response to a call, at least a function for responding to a call from a center must always be operated, and therefore power is constantly consumed. You. For this reason, only the receiving part of the wireless function is energized,
Power is saved by sequentially supplying power to other parts including the transmission unit in accordance with commands such as a received carrier signal and a control signal. In addition, there is an apparatus that further reduces power consumption by intermittently receiving in units of seconds or minutes while sacrificing responsiveness somewhat. To send and receive large amounts of data at high speed, 50M
FM-based radios of about Hz to 800 MHz are used, and current consumption during standby can be significantly reduced by energizing only the receiving unit.

In the case where a large number of data processing devices are collectively managed at a center, there is a problem that the current consumption is reduced to the extent that the current consumption can be actually reduced. That is,
In normal operation, the power of the wireless receiver is turned on to reduce power consumption, but when trying to control multiple data processing devices, the available frequency band is small, so
The data processing device that communicates by transmitting the identification information at the same frequency is identified. However, the data processing device needs to turn on the power to the modem, the call discrimination circuit, and the like only by receiving the carrier of the same frequency. Therefore, in many cases, power is consumed except for actually calling the data processing apparatus. Even when the power is supplied only to the receiving unit and the apparatus is in the standby state, the case other than the case where the specific data processing apparatus is actually called is used. However, it is necessary to make use of some functions, and it is difficult to greatly reduce power consumption.

Further, in recent years, the use of data communication services using communication satellites has become popular, and the cost for preparing a communication environment can be reduced, and an economic measurement network can be provided. In other words, equipment that uses radio equipment in the terrestrial frequency band has large antennas as the frequency decreases, making installation difficult.In addition, prior work such as radio wave measurement at the time of installation, and maintenance of relay stations etc. in remote locations Incurs equipment costs and costs to maintain them, so that just maintaining and maintaining a communication environment requires huge costs. However, when a communication satellite is used, the line communication speed is relatively low, but there is an advantage that the satellite line does not have any obstacles, so there is no need for prior work such as radio wave measurement at the time of installation and communication can always be performed. . In addition, the antenna is small and easy to install, and since it is often used, the equipment is inexpensive and a relay station is not required, so that the cost for installation and subsequent maintenance can be greatly reduced.

[0008] On the other hand, while there is such a great advantage, the transmitted and received radio waves are attenuated because the satellite is far away, and the electrolytic strength is weak. Therefore, it is necessary to considerably increase the amplification of the radio waves in the receiving unit or the transmitting unit. Therefore, it is necessary to further increase the output of the communication device, and the power consumption increases. In particular, since the power consumption of the receiving unit increases, the current consumption during standby also increases. Therefore, it is necessary to increase the size of the solar cell or the battery. As a result, the cost of maintaining the wireless environment can be suppressed, but the price of the data processing device alone increases significantly. For this reason, even if the present invention is applied to a system in which a data processing device is installed in a remote place by wireless means including a measurement system, a telemeter, or a telecontrol, and data is collected, no economic merit can be obtained.

Therefore, in the present invention, a data processing apparatus and a data processing apparatus capable of providing economical advantages even in a system for transmitting and receiving data using a communication satellite by further reducing power consumption during standby. It is intended to provide a control method. It is another object of the present invention to provide a highly reliable data processing device by providing a function such as tracking a communication satellite without increasing standby power.

[0010]

Therefore, in the present invention, in addition to communication means for transmitting or receiving data,
Second communication means operating at different low power is provided, and the first communication means is activated by the second communication means. That is, the data processing device of the present invention includes a processing unit capable of executing a process based on data transmitted or received via the first communication unit, and a processing unit capable of receiving at least a command for activating the first communication unit. 2 communication means. The control method of the data processing apparatus according to the present invention includes a step of executing a process based on data transmitted or received via the first communication unit, and a command for activating the first communication unit by the second communication unit. And executing the command when the command is received. Such a control method can be realized by hardware such as a gate circuit or wired logic, and can also be realized by software called a control program of a data processing device having instructions capable of executing these steps. It is possible. The control program can be recorded on a computer-readable recording medium, such as a ROM, a RAM, or a magnetic disk, and can be provided or held.

As described above, the communication means using a communication satellite or the FM communication means capable of transmitting a large amount of data at a high speed even on a terrestrial wave is suitable for transferring data, but is made to wait in a reception state. However, it is difficult to reduce power consumption. On the other hand, by providing the second communication means mainly for communicating commands in addition to the communication means mainly for performing data communication, the power consumption in the standby state in the reception state can be reduced. can do. If the first communication means is activated when a command is received by the second communication means, the first communication means does not need to maintain the standby state, and the standby power of the first communication means does not need to be maintained. Can be reduced to zero or significantly.

For this reason, the data processing apparatus of the present invention is employed to connect directly or indirectly to the base station (center) via the first and second communication means, thereby enabling the first communication with the base station. A command for starting the first communication means is transmitted from the base station via the second communication means of the data processing apparatus to a data processing apparatus capable of executing processing based on data transmitted or received via the means. A data transmission / reception system can be constructed, and a system for collecting and monitoring data without receiving power supply for a long period of time can be constructed.

Therefore, the data processing device of the present invention
It is suitable for a device that operates with limited power, and is suitable for a data processing device having a power storage unit that supplies power to a processing unit, a first communication unit, and a second communication unit. The storage means is, of course, primary batteries such as dry batteries,
It also includes a secondary battery such as a solar battery, a rechargeable battery using wind, waves, or the like.

Further, the first and second communication means may be wired, but the data processing apparatus of the present invention can significantly reduce the power consumption during standby, so that it can be used in a remote place where the power supply environment is not established. Are suitable. Therefore, it is desirable that the first and second communication means be wireless communication means that can easily communicate even in such an area. Then, in the communication means using wireless, the command cannot be received unless the receiving side is in the standby state. However, in the data processing device of the present invention, the power consumption during standby is small, so that it is suitable for wirelessly communicating data. Configuration.

The first communication means for transmitting or receiving data may be a terrestrial FM system or the like.
Since the standby power of the first communication means can be reduced to zero, the data processing apparatus of the present invention is suitable for a data processing apparatus which transmits or receives data via a communication satellite which requires a communication means having a higher output. . Since the power consumption of a data processing device that transmits or receives data using a communication satellite can be reduced, satellite communication can be supported without increasing the size of a power storage unit such as a battery. Therefore, with the data processing device of the present invention, it is possible to realize a measurement system or a telemeter and a telecontrol system using a communication satellite at a low cost, which can significantly reduce the cost for maintaining or maintaining the communication environment as described above. Becomes

It is also useful that the second communication means can receive not only activation but also other commands for remote control. For example, when the first communication means includes a highly directional antenna such as a parabolic antenna, the second communication means adds the command for activating the first communication means and the antenna of the first communication means. Can be received. By executing the command, it is possible to correct the direction of the antenna to the direction of the communication satellite, improve the accuracy of data transmission or reception by the first communication means, and provide a highly reliable data processing device. Can be provided.

[0017] As a second communication means having a small standby power,
By using a communication system capable of receiving commands via a public communication network, the cost for preparing a communication environment for the second communication means can be omitted. In addition, since it is sufficient to receive commands, a system that communicates via terrestrial waves may be used. For example, an individually selected paging receiver (pager),
A communication network such as a mobile phone or a PHS can be used. The communication system employed in these public communication networks has a very small standby power of 1 mW or less, and can reduce the standby power of the data processing device of the present invention to the same value. In addition, any communication means that accesses the public telephone network itself has identification information such as a telephone number, so that the data processing device can be distinguished and called based on the identification information.

An individual selective call receiver or a mobile phone is
Although the area that can be received by the built-in antenna is large,
Further, by providing an external antenna, a receivable area can be expanded. Therefore, even in a place where only communication satellites can maintain data communication strength, it is possible to call up the data processing device of the present invention from a public communication network by setting up an antenna and receiving a command. it can.

As a command for remote operation receivable by the second communication means, a command for activating the processing unit may be further received, and the operation of the processing unit is stopped until the command is received. Consumption can be suppressed.
In addition, the second communication unit may be configured to receive a command to stop the first communication unit or a command to stop the processing unit. After the communication is over, the first communication unit or The processing unit may be stopped to reduce power consumption.

Further, since the data can be transmitted or received by the second communication means because the speed can be low,
It is also possible to use the second communication means as a backup for the first communication means.

The data processing device of the present invention can
It can be operated for a long time in a place where the power environment and the communication environment are not maintained, and can be started at any time in response to a command from a center or the like to transmit or receive data. Therefore, it had a remote control (telecontrol) function, such as telemetering for measuring or observing the weather in remote areas, monitoring the nature of remote areas, or operating a water discharge warning for a dam. It is suitable for a data processing device.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an outline of a data processing apparatus 10 according to the present invention and a data transmission / reception system 1 using the same. The data processing device 10 of the present example includes:
It can monitor crustal deformation near the crater of a volcano, etc., and can output an alarm to the surroundings when a dangerous situation occurs. For this reason, the movement of the crust
And a siren 12 that issues an alarm.
Is connected to

For this reason, the processing unit 13 has a function of storing data from the sensor and transmitting the stored data to the center 5 via the communication satellite 2 using the data communication unit 14 when there is an instruction. . Therefore, the data processing device 10 includes a parabolic antenna 15 for communicating with a satellite, and an actuator 16 capable of controlling the orientation of the parabolic antenna 15. A center (base station) 30 for receiving data from the data processing device 1
Is connected to a satellite ground station 3 capable of receiving radio waves from the communication satellite 2 by an appropriate medium, for example, a public telephone network or the Internet.
Can store and analyze data received from the data processing device 10.

In recent years, data distribution systems using communication satellites have also been utilized for consumer use. Broadband (high-speed) transmission is possible because a communicable area covered by one satellite is wide and radio waves in a high frequency band can be used. Is possible. In addition, there are many benefits overcoming geographic obstacles, uniformity of communication quality, disaster tolerance, broadcast and multiple access schemes.
Therefore, the data transfer rate is several tens to several hundreds Mb.
It is possible to secure a data transfer rate of several hundred to several thousand times or more that of a normal telephone line, and is suitable for transferring a large amount of data such as measurement data in a short time. Almost all areas on the earth can be covered by geostationary satellites in high orbit or low orbiting satellites in low orbit, and data can be obtained even from areas where communication infrastructure is not established. When a geostationary satellite is used, data can be transmitted and received at all times, but since it is located in a high orbit, a high-output communication device is required. If low-orbit satellites are used, the output of the communication device can be reduced, but the communication time is limited. Therefore, communication systems that make use of the respective merits and demerits are being studied.

The data processing apparatus 10 of the present embodiment further includes a system for transmitting and receiving data using the communication satellite 2 (first communication means), and a terrestrial wave from the center 30 without passing through the communication satellite 2. A system (second communication means) for receiving a command is provided. The data processing apparatus 10 of the present embodiment employs a receiving function 21 of an individual selective calling receiver (pager or pager (registered trademark)) for command reception. Pagers are not products based on two-way communication, but products have been established as a means of unilaterally transmitting information. Therefore, it is necessary to convey information to the other party as securely as possible, and about 250 W
Such strong radio waves are transmitted. In addition, the pager body also has sufficient receiving sensitivity with a built-in antenna from the viewpoint of portability.

Further, this communication infrastructure is a public telephone network 9.
, And there are pager base stations 7 in various places, and the radio waves transmitted therefrom cover most of the whole of Japan. In addition, in the data processing device 10 of the present example, a high-gain external antenna 21 is provided as a receiving antenna of the pager 20 instead of the built-in type to obtain a gain of several dB or more. Therefore, the range that can be received by the pager 20 is further expanded, and the paging signal of the pager 20 can be received not only on the ground but also in a wide area on the sea.

Further, the power consumption of the pager 20 during standby is very small, for example, about 0.8 mW. Therefore, the battery consumption is low even when the reception state is always set. Furthermore, since the pager 20 has a unique call number, there is an advantage that a specific data processing apparatus 10 can be called by calling the pager 20. In addition, since a function for sending necessary characters to the other party after the call is provided, use of this function makes it easy to send the characters themselves as control signals instead of sending normal characters.
For this reason, in the data processing device 10 of this example, normally, only the pager function 20 is energized to be in the receiving state,
The communication system 14 and the processing unit 13 for satellite communication are kept in a state where power is not consumed, or the power supplied to the communication system 14 and the processing unit 13 is cut off. Then, when a predetermined signal or command is transmitted to the pager 20, the communication system 14 and the processing unit 13 are activated, and function as the data processing device 10.

For this reason, the data processing device 10 of the present embodiment
An interface unit 22 for interfacing with the pager function 20 and a command execution unit 23 for interpreting and executing a command received by the pager function 20 are provided.
The data processing device 10 according to the present embodiment includes, in addition to the command that activates the communication unit 14 and the processing unit 13 as a command that can be interpreted by the command execution unit 23, the communication unit 14 and the processing unit 13
And a command for controlling the actuator 16 for changing the direction of the satellite communication antenna 15 are prepared. For this reason, the command execution unit 23
Then, when these commands are sent from the personal computer 32 of the center 30 via the pager base station 7 and the pager receiving function 20, the commands are interpreted and the actuator 16, the communication unit 14, and the processing unit 13 are controlled. I do.

In this embodiment, the personal computer 32 of the center 30 is connected to the public telephone network 9 via the Internet 4 and the gateway 8 and can send a command to the pager receiver 20.
It goes without saying that the system may be directly connected to the public telephone network 9.

As described above, the data processing apparatus 10 of the present embodiment
Has turned on and off the functions of the processing unit 13 and the communication unit 14 according to the command received by the pager function 20. Therefore, if the pager function 20 and the interface unit 22 activated by the presence / absence of the command received by the pager function 20 are set in a standby state, the power consumed by the processing unit 13 and the communication unit 14 is reduced when there is no instruction by the command. It can be minimal or zero. Therefore, the data processing device 10 can be maintained in operation for a long period of time even when a battery or the like is used as a power source. Therefore, the data processing apparatus 10 of the present embodiment includes a battery 28 serving as a power storage unit as a power supply, and a solar panel (solar cell) 29 that can be charged thereto. For this reason, the data processing device 1 of the present example is used even in a place where the power supply environment is not particularly prepared.
It is possible to acquire surrounding data and transmit it to the center 30 simply by transporting and installing 0.

FIG. 2 is a flowchart showing an outline of control for starting and stopping the data processing device 10. First, in step 51, the pager 20 is set in a standby state, and waits until the pager 20 of the data processing apparatus 10 is called. During this time, the communication device 14 for the communication satellite is in the off state, and the processing unit 13 is also in the off state.
In the processing unit 13, it is possible to set up a program or hardware so as to execute a process of periodically performing measurement by the sensor 11 even in the off state and storing the value and time in a memory such as a RAM.

When the pager 20 is called and receives a command, the command is interpreted in step 52 and subsequent steps. For example, in step 52, it is determined whether the command is a command for controlling the position of the antenna 15 or not.
3 drives the actuator 16 to adjust the angle of the antenna 15. If it is determined in step 54 that the received command is a command for starting the system, the communication unit 14 and the processing unit 13 are started in step 55, data is measured, and the measured data is transmitted to the center via the communication satellite 2. 30.

Further, in step 56, if the command received by the pager 20 is a system stop, the communication unit 14 and the processing unit 13 are stopped in step 57 to reduce power consumption. On the other hand, if the command received by the pager 20 is not one of these commands, the processing defined by the command is performed in step 58. For example, as a result of analyzing the transmitted data, if the crust is in a dangerous state, a command to sound the siren 12 is transmitted, and the processing unit 13 executes the command. Furthermore, the data processing device 10 of the present example
If the communication unit 14 or the antenna 15 fails,
Is out of order, or is not in a position where circulatory hygiene can be communicated in a system using circulatory hygiene, the data is transferred to the center 3 via the pager 20 and the public telephone network 9.
0, and when a command to execute the processing is received, the data is transmitted at a low speed, but the pager 20 is sent.
To send over.

These controls can be realized by hardware using a gate circuit or other hard wire logic, and a control program having an instruction capable of executing each of the above steps is created and realized by software. Is also possible. When the control of the data processing device 10 is realized by software, the CPU or the MPU operating as the processing unit 13 can be operated with a low clock or other low power consumption, and when only the pager function 20 is waiting for reception, It is desirable that the CPU or the MPU can execute the function as the interface 22 or the command execution unit 23 in the low power consumption mode. And such a control program is a CPU
Alternatively, the data processing device 10 of the present embodiment may be stored together with the MPU in a ROM or a RAM or a magnetic disk together with a program for performing other processing.

As described above, the data processing apparatus 10 of the present embodiment
Usually, only the pager receiving function 20 is set in the standby state, so that the communication unit 14 for communicating with the satellite can be completely turned off. When the pager receiving function 20 receives an instruction from the center 30, the communication unit 1
By activating the device 4, measurement data and the like can be transmitted to the center 30 via the communication satellite 2. For this reason, even if a communication unit 14 having a large output capable of communicating with the satellite 2 is prepared, the standby power can be extremely reduced to only 0.8 mW of the pager reception function 20.
Then, the time during which the communication unit 14 is activated can be minimized, and the power consumed by the communication unit 14 can also be minimized.

Therefore, the average power required to operate the data processing device 10 can be greatly reduced, and the capacity of the power supply 28 can be reduced, and the cost can be reduced. For this reason, the data processing device 1 which can be installed and used immediately anywhere using a satellite communication system.
0 can be provided compactly and at low cost.
Therefore, it is possible to economically construct the data transmission / reception system 1 that can be operated from the center 30 by the satellite communication system and that can collect data in the center 30, and enables observation of volcanic activity, meteorological observation, river condition measurement, and the like. The data processing device 10 and the data transmission / reception system 1 of the present embodiment can be used for various purposes such as an alarm system, other monitoring or observation systems.

As described above, the data processing apparatus 10 of the present embodiment is capable of transmitting and receiving a large amount of data at a high speed with the system 14 for satellite communication and receiving the data at a low speed with a small capacity but with low power consumption. By installing two types of communication systems having different purposes and different power consumptions as a pager receiving system 20 capable of greatly reducing standby power and allowing a high-power communication system to be used freely. I have. In addition, pagers are one of the infrastructures of the public communication network, and the system covers the whole of Japan, so that commands can be transmitted and received at no extra cost. Further, the pager 20 has individual identification information, and has an advantage that the data processing apparatus 10 can be identified by calling the pager 20. Since the hardware configuration is simplified, the data processing device 10 can be compactly assembled even if a different communication system is mounted in addition to the first communication system capable of communicating with the satellite. Size and cost do not increase much. On the other hand, the standby power can be significantly reduced and the battery capacity can be reduced, so that the size of the data processing device 10 can be reduced and the cost can be reduced.

Further, if a communication system using a satellite line is to be used in a standby state to receive a start command, the receiver will have a higher electric field strength of radio waves transmitted from the satellite, since the electric field strength on the ground is weak. A high sensitivity receiver using a gain parabolic antenna and equipped with a low noise amplifier (LNA) is required. Further, in general, the downlink from a satellite is a multi-carrier, and a device for extracting and demodulating a desired carrier from the multi-carrier is a large-scale device. Cannot be reduced. On the other hand, in the case of the pager receiver 20, a technique for reducing standby power has been established, and it is possible to wait for a command with low power as described above.

Like a pager, a mobile phone or PH
S is provided as a wireless public communication network, and the standby power is small. Therefore, instead of a pager, a mobile phone or PH within the range where the radio waves of these communication networks can reach
It is also possible to employ the S system as a communication system for receiving commands. However, considering the reach of radio waves and the like, at present, the area where the pager receiver can receive a command is the widest. Further, in the future, there is a possibility that a system capable of broadcasting an information stream using an IP address as identification information by a satellite or a communication network will be prepared. Is promising as a second communication means.

In this embodiment, the satellite communication system is described as the first communication means as a system capable of transmitting and receiving a large amount of data. However, the communication system may be combined with a terrestrial communication system such as FM radio. And the standby power of the communication system can be reduced to zero.
Further, as described above, the use of the communication satellite can reduce the cost for maintenance and maintenance of the infrastructure such as the relay station, so that there is a great economic advantage. Further, in this example, the present invention is described based on a data processing device having a highly directional parabolic antenna, but it is also possible to use an omnidirectional whip antenna or the like, and use a low-orbit orbiting satellite. It is effective when communicating with

[0041]

As described above, in the data processing device and the data transmission / reception system according to the present invention,
The data processing device is provided with, in addition to the first communication means having a high output and a high function such as a satellite communication system, a second communication means which is inferior in function but can greatly reduce power consumption during standby. Thus, the standby power of the first communication unit is reduced to zero, and the system can be operated with only a small amount of power consumption such as the standby power of the second communication unit or other interface functions. Furthermore, by transmitting appropriate commands from the second communication means, the center can control the power supply of the first communication system and the monitoring / observation system serving as the processing system from the center at any time, greatly reducing power consumption. In addition, it is possible to provide a data processing device that can be easily used from a center or a base station, and a data transmission / reception system that can transmit and receive data at any time and that can be operated for a long period of time can be constructed.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a data transmission / reception system using a data processing device of the present invention.

FIG. 2 is a flowchart illustrating control of starting and stopping of the data processing device.

[Explanation of symbols]

 Reference Signs List 1 data transmission / reception system 2 communication satellite 3 ground station 4 Internet 7 pager base station 9 public telephone network 10 data processing device 11 sensor 13 processing unit 14 satellite communication system 15 antenna 16 actuator 20 pager receiver 21 external antenna 22 interface 23 command execution unit 28 Battery 30 Base station (center)

Claims (20)

[Claims] 1. A processing unit capable of executing a process based on data transmitted or received via a first communication unit, and a second communication unit capable of receiving at least a command for activating the first communication unit. And a power storage unit for supplying power to the processing unit, a first communication unit and a second communication unit, wherein the first communication unit is capable of transmitting or receiving the data via wireless. The second communication means is a data processing device capable of receiving the command via wireless. 2. A data processing apparatus according to claim 1, wherein said first communication means is capable of transmitting or receiving said data via a communication satellite. 3. The data processing device according to claim 1, wherein the second communication unit is capable of receiving the command via a public communication network. 4. The data processing device according to claim 3, wherein the second communication unit can receive the command via a terrestrial wave. 5. A data processing apparatus according to claim 4, wherein said second communication means is capable of receiving said command via at least one of a personal selective call receiver, a mobile phone and a PHS communication network. 6. The data processing device according to claim 3, wherein the second communication unit includes an external antenna capable of receiving a radio wave from the communication network. 7. The data processing device according to claim 1, wherein the second communication unit is capable of receiving another remote control command. 8. The data processing device according to claim 7, wherein the second communication means can receive a command for changing the direction of the antenna of the first communication means. 9. The data processing device according to claim 7, wherein the second communication unit can receive a command for starting the processing unit. 10. The data processing device according to claim 7, wherein the second communication unit can receive a command to stop the first communication unit or a command to stop the processing unit. 11. The data processing device according to claim 1, wherein said second communication means is capable of transmitting or receiving said data. 12. The data processing device according to claim 1, wherein the processing unit has a function of measurement, observation, monitoring, or remote control. 13. A step of executing a process based on data transmitted or received via the first communication means, and receiving a command for activating the first communication means by the second communication means, Executing the data communication apparatus, wherein the first communication means is capable of transmitting or receiving the data wirelessly, and the second communication means is capable of receiving the command wirelessly. Control method. 14. The control method according to claim 13, wherein the second communication unit receives the command via a public communication network. 15. The method according to claim 13, further comprising the step of executing the command when the second communication means receives another command for remote control including a command for changing the direction of the antenna of the first communication means. A control method for a data processing device. 16. A step of executing a process based on data transmitted or received via the first communication means, and receiving a command for activating the first communication means by the second communication means, A computer-readable recording medium on which a control program of a data processing device having instructions capable of executing the steps of executing the steps is recorded. 17. A data processing apparatus capable of executing processing based on data transmitted or received via a first communication means with a base station, said base station being provided via a second communication means of said data processing apparatus. Transmits a command for activating the first communication unit from the first communication unit, the first communication unit can transmit or receive the data via wireless communication, and the second communication unit transmits the command via wireless communication. A data transmission / reception system that can receive data. 18. The data transmission / reception system according to claim 17, wherein said first communication means is capable of transmitting or receiving said data via a communication satellite. 19. The data transmission / reception system according to claim 17, wherein said second communication means can receive said command via a public communication network. 20. A data transmission / reception system according to claim 19, wherein said second communication means is capable of receiving said command via at least one of a communication network of an individual selective call receiver, a mobile phone and a PHS.