JP4572652B2 - In-vehicle wireless device - Google Patents

Description

  The present invention relates to an in-vehicle wireless device that periodically transmits data to an external receiving center even when a key switch for starting an electric vehicle is turned off.

  2. Description of the Related Art In recent years, wireless mobile communication such as a global positioning system (GPS) receiver and a mobile phone that measure the position of a mobile object on the ground using an artificial satellite, for example, for a mobile object such as an electric vehicle. Attempts have been made to mount various in-vehicle wireless devices such as devices and devices connected to the Internet.

  As a technique related to such an in-vehicle wireless device, for example, there is one described in Patent Document 1 or the like.

Specifically, Patent Document 1 discloses a vehicle-mounted wireless device that includes a wireless device for performing wireless communication and that intermittently starts the wireless device when the main power is off. In particular, this in-vehicle wireless device activates the wireless device when an operation by the user is detected outside the vehicle when the operation of the wireless device is stopped when the main power is off. Thereby, according to this vehicle-mounted radio | wireless apparatus, it is supposed that the telematics ECU (Electronic Control Unit) which can improve the convenience while suppressing power consumption can be provided.
JP 2003-278418 A

  However, in the above-described in-vehicle wireless device, the power required for communication and computation may be affected depending on the environmental condition of the place where the vehicle is stopped, particularly the wireless communication state, but the change in the required power according to the environmental condition Did not consider. For this reason, the conventional in-vehicle wireless device has a problem that, when activated without considering environmental conditions, excessive power is consumed depending on the environmental conditions, leading to an increase in battery power.

  Therefore, the present invention has been proposed in view of the above-described circumstances, and it is possible to reliably reduce necessary power information to the outside while reducing changes in power consumption that depend on environmental conditions and preventing battery overdischarge. An in-vehicle wireless device capable of transmitting is provided.

Vehicle radio device according to the present invention, the importance of the data at the current position calculated on the basis of the mapping information based on the received signal strength level received from G PS satellites, low controls the operation frequency of the communication unit Thus, the above-described problem is solved by adjusting the power consumption degree.

  According to the in-vehicle wireless device according to the present invention, the operation frequency is reduced under the condition of excessive power consumption, and the power saving drive is performed while obtaining necessary information. Necessary information can be reliably transmitted to the outside while appropriately saving power and preventing overdischarge of the battery of the electric vehicle.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

  The present invention is mainly applied to an in-vehicle wireless device mounted on an electric vehicle. In particular, the in-vehicle wireless device periodically transmits data to the receiving center so that the receiving center can monitor the state of the electric vehicle even while the key switch for starting the electric vehicle is turned off. It is composed of.

[First Embodiment]
First, an in-vehicle wireless device according to a first embodiment to which the present invention is applied will be described.

[Configuration of in-vehicle wireless device]
As shown in FIG. 1, the in-vehicle wireless device 10 includes a mobile phone device 11 that is a communication unit that performs communication with the reception center 20 and a global positioning system (hereinafter referred to as GPS) (not shown). A GPS data processing device 12 that is a GPS data processing unit that receives and processes a signal transmitted from a satellite, and a main calculation unit 13 that is a control unit that performs various calculations.

  The mobile phone device 11 communicates with the external receiving center 20 by transmitting and receiving radio waves via the mobile phone antenna 11 a according to the control of the main calculation unit 13. Specifically, the cellular phone device 11 transmits position data indicating the current position of the electric vehicle calculated by the GPS data processing device 12 to the reception center 20. Here, the cellular phone device 11 receives data such as ACK for the data transmitted to the receiving center 20, POI information and mail data related to various services provided by the receiving center 20 to the electric vehicle.

  The GPS data processing device 12 receives a signal transmitted from a GPS satellite via the GPS antenna 12a under the control of the main arithmetic unit 13, and calculates the current position of the electric vehicle based on the received signal. The GPS data processing device 12 supplies position data indicating the calculated current position to the main calculation unit 13.

  The main calculation unit 13 includes, for example, a calculation device such as a CPU (Central Processing Unit) and a memory that is a storage unit that stores various information including at least map information such as a RAM (Random Access Memory) and a ROM (Read Only Memory). Consists of The main calculation unit 13 calculates the strength of radio waves transmitted and received when the mobile phone device 11 communicates with the reception center 20.

  The main calculation unit 13 displays a navigation system (not shown) in a state where a marker indicating the current position is superimposed on the map information based on the position data indicating the current position of the electric vehicle calculated by the GPS data processing device 12. Display on the screen. Further, the main calculation unit 13 performs the operation frequency of the mobile phone device 11, that is, the reception center 20 based on various information such as the radio wave intensity and the current position exchanged with the reception center 20. Control the communication frequency.

  Such an in-vehicle wireless device 10 is connected to a vehicle battery that is a secondary battery as a power source (not shown), and operates by consuming electric power supplied from the vehicle battery. And the vehicle-mounted radio | wireless apparatus 10 transmits data to the receiving center 20 regularly, in order to monitor the state of an electrically powered vehicle always according to control of the main calculating part 13. FIG.

[Operation of in-vehicle wireless device]
In general, in the above-described in-vehicle wireless device, when the strength of radio waves transmitted to and received from the reception center 20 is weak, in order to ensure communication performance, the strength of radio waves transmitted from the mobile phone device 11 is increased, Along with this, power consumption exceeding the normal time when the radio wave condition is stable is required.

  On the other hand, the in-vehicle wireless device 10 to which the present invention is applied receives radio waves transmitted to and received from the receiving center 20 according to the control of the main calculation unit 13 in order to transmit data to the receiving center 20 reliably and regularly. Based on the strength, we will save power according to the radio wave conditions.

  FIG. 2 shows the time transition of the communication processing from the in-vehicle wireless device 10 to the reception center 20, the radio wave intensity exchanged with the reception center 20, and the activation state of the electric vehicle.

  First, since the vehicle battery is charged during traveling in which the key switch for starting the electric vehicle is turned on, the main calculation unit 13 is unlikely to be in an overdischarged state. There is no need to perform a power saving operation, and the cellular phone device 11 is controlled to transmit data to the receiving center 20 at regular intervals at a time interval T1 which is a communication interval at normal times.

  On the other hand, when the key switch is turned off, the main calculation unit 13 shifts to the power saving mode shown below.

  That is, in the first communication after the key switch is turned off, the main arithmetic unit 13 communicates with the receiving center 20 after the time T1 has elapsed since the previous data transmission to the receiving center 20, as described above. Communicate. At this time, the main calculation unit 13 measures and calculates the intensity of radio waves transmitted to and received from the reception center 20. When the calculated radio wave intensity is equal to or less than the predetermined determination value W1, the main calculation unit 13 determines that the radio wave intensity is weak and sets the time interval for performing communication with the reception center 20 as the time described above. The time is changed to a predetermined time interval T2 longer than the interval T1. Further, since the radio wave intensity of the radio wave received from the reception center 20 is weak, the main arithmetic unit 13 increases the radio wave intensity of the mobile phone device 11 in order to reliably complete data transmission from the mobile phone device 11 to the reception center 20. Let

  More specifically, the main calculation unit 13 performs a series of processes as shown in FIG. 3 to save power according to the radio wave condition based on the radio wave intensity exchanged with the receiving center 20. Plan.

  First, in step S1, the main calculation unit 13 determines whether or not the elapsed time TA from the previous data transmission to the receiving center 20 is larger than a predetermined time interval T1 set in advance.

  Here, the main calculation unit 13 waits until the elapsed time TA reaches the time interval T1, and when the elapsed time TA reaches the time interval T1, the main arithmetic unit 13 controls the mobile phone device 11 in step S2 to receive the reception center 20. In step S3, the radio wave intensity of the radio wave transmitted from the reception center 20 is measured and calculated.

  Subsequently, in step S4, the main calculation unit 13 determines whether or not the key switch is on. Here, when determining that the key switch is in the ON state, the main calculation unit 13 sets the time interval T to the above-described time interval T1 in step S5, and repeats the processing from step S1.

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 sets a time interval according to the radio wave intensity. For example, in step S6, the main calculation unit 13 determines whether or not the radio wave intensity calculated in step S3 is equal to or less than the predetermined determination value W1 described above. If the main calculation unit 13 determines that the radio wave intensity is not equal to or less than the determination value W1, the main calculation unit 13 determines that the radio wave intensity is sufficiently strong and proceeds to step S5, while the radio wave intensity is equal to or less than the determination value W1. If it is determined that there is a signal, it is determined that the radio field intensity is weak, the process proceeds to step S7, the time interval T is set to the time interval T2 described above, and the process from step S1 is repeated.

  As described above, when the key switch is turned off, the in-vehicle wireless device 10 changes the operation frequency based on the radio wave intensity exchanged with the receiving center 20 according to the control of the main calculation unit 13. , To save power. In addition, in the case where the in-vehicle wireless device 10 includes a fuel cell that generates electric power consumed by a drive motor as well as a vehicle battery, the electric power required for starting the fuel cell remains. Of course, the operation frequency of the mobile phone device 11 is adjusted.

[Effect of the first embodiment]
As described above in detail, the in-vehicle wireless device 10 according to the first embodiment is configured so as to limit the number of communication when the radio wave intensity exchanged with the receiving center 30 is weak. Control the frequency of operation. As described above, the in-vehicle wireless device 10 is a condition that consumes excessive power even when the strength of the radio wave transmitted from the mobile phone device 11 needs to be increased in a state where the radio wave strength from the reception center 20 is low. The operation frequency is reduced and power-saving driving is performed while obtaining necessary information, so that the duration of the vehicle battery can be extended and overdischarge of the vehicle battery can be prevented, and the necessary information can be transferred to the outside. And can be transmitted reliably.

[Second Embodiment]
Next, an in-vehicle wireless device according to the second embodiment will be described. In the description of the second embodiment, the same parts as those in the first embodiment described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof will be omitted.

  The in-vehicle wireless device according to the second embodiment calculates the operation frequency based on information obtained by mapping in advance the radio wave intensity degree for each region with respect to the map information, not the radio wave intensity exchanged with the receiving center 20. It is something to control.

[Configuration of in-vehicle wireless device]
The in-vehicle wireless device 10 has the configuration shown in FIG. The in-vehicle wireless device 10 needs to perform communication once in order to directly measure the intensity of radio waves exchanged with the receiving center 20, and the mobile phone device 11 uses the high power to transmit radio waves in the communication. When making a call, a lot of power is consumed.

  On the other hand, the in-vehicle wireless device 10 according to the second embodiment stores mapping information in which the radio wave intensity degree for each region is mapped to map information in a memory in the main calculation unit 13 as illustrated in FIG. 4, for example. is doing. This mapping information is obtained by classifying regions in multiple stages, for example, based on the average radio field strength for each region, such as high radio field strength, medium radio field strength, and low radio field strength.

  And the main calculating part 13 reads the mapping information of the radio field intensity corresponding to the said map information while reading the map information of the present position vicinity calculated | required based on the signal acquired by the GPS data processor 12. FIG.

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 10 saves power according to the situation based on the current position and the mapping information according to the control of the main calculation unit 13.

  FIG. 5 shows communication processing from the in-vehicle wireless device 10 to the receiving center 20, data processing by the GPS data processing device 12, radio wave intensity based on mapping information, and time transition of the activation state of the electric vehicle.

  First, the main calculation unit 13 does not need to perform the power saving operation during the traveling in which the key switch for starting the electric vehicle is turned on, as in the first embodiment. Therefore, the in-vehicle wireless device 10 is in the time interval T1, which is a normal communication interval, according to the control of the main calculation unit 13 regardless of the radio wave intensity based on the mapping information while the key switch is in the ON state. Periodically, the GPS data processing device 12 performs a process for obtaining the current position, and transmits the processed data to the receiving center 20.

  On the other hand, when the key switch is turned off, the in-vehicle wireless device 10 shifts to the power saving mode shown below.

  That is, the in-vehicle wireless device 10 performs processing by the GPS data processing device 12 and the receiving center 20 after the time T1 has elapsed since the previous data transmission to the receiving center 20 for the first time after the key switch is turned off. And communicate with each other. At this time, the main calculation unit 13 searches and calculates the radio wave intensity at the current position based on the position data indicating the current position obtained by the GPS data processing device 12 and the mapping information stored in the memory. .

  When the calculated radio field intensity is not strong, the main calculation unit 13 sets the time interval for performing processing by the GPS data processing device 12 and communication with the reception center 20 to be longer than the time interval T1 described above. Change to a predetermined time interval T2.

  More specifically, the in-vehicle wireless device 10 goes through a series of processes as shown in FIG. 6 according to the control of the main calculation unit 13, thereby saving power according to the situation based on the current position and mapping information. Plan.

  First, as shown in FIG. 6, when the main calculation unit 13 performs the processing of step S1 and step S2 previously shown in FIG. 3, in step S11, the main calculation unit 13 controls the GPS data processing device 12 to determine the current position. calculate. That is, the main calculation unit 13 performs communication with the reception center 20 and calculates the current position.

  Subsequently, in step S12, the main calculation unit 13 refers to the stored mapping information and searches and calculates the radio wave intensity at the current position calculated in step S11.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to a predetermined time interval T1, and repeats the processing from step S1. .

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 proceeds to step S13 and sets the time interval T according to the radio wave intensity. For example, when the radio wave intensity calculated in step S12 is weak, the main calculation unit 13 sets the time interval T2 longer than the time interval T1, and repeats the processing from step S1, while the radio wave intensity If the area is strong, the time interval T is set to the above-described time interval T1, and the processing from step S1 is repeated. Of course, the setting of the time interval is not limited to two of T1 and T2, and for example, a time interval of a type corresponding to the divided radio wave intensity degree may be set.

  As described above, when the key switch is turned off, the in-vehicle wireless device 10 determines the current position from the mapping information obtained by mapping the radio wave intensity degree for each area to the map information according to the control of the main calculation unit 13. The radio wave intensity is calculated, and the operation frequency is changed based on the radio wave intensity to save power.

[Effects of Second Embodiment]
As described above in detail, the in-vehicle wireless device 10 according to the second embodiment performs radio waves for each region with respect to the current position obtained by the GPS data processing device 12 and the map information according to the control of the main calculation unit 13. The radio field intensity at the current position is calculated based on the mapping information in which the intensity level is mapped in advance, so that the radio field intensity can be predicted in advance, and it is not necessary to perform communication for measuring the radio field intensity. The power consumption can be reduced.

[Third Embodiment]
Next, an in-vehicle wireless device according to the third embodiment will be described. In the description of the third embodiment, the same parts as those in the first embodiment and the second embodiment described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof is omitted. To do.

  The on-vehicle wireless device according to the third embodiment controls the operation frequency of the mobile phone device 11 based on information in which a predetermined importance degree is mapped in advance to map information, not radio wave intensity.

[Configuration of in-vehicle wireless device]
The in-vehicle wireless device 10 has the configuration shown in FIG. For example, as shown in FIG. 7, the in-vehicle wireless device 10 stores mapping information in which the degree of importance for each region is mapped to map information in a memory in the main calculation unit 13. This mapping information is obtained by dividing a region into multiple levels such as high importance, medium importance, and low importance.

  Here, the importance is an element for determining whether to increase or decrease the frequency of the mobile phone device 11 that performs communication with the reception center 20. That is, the importance is set high in an area where it is desirable to increase the frequency of communication with the receiving center 20.

  As described above, an area where it is desirable to increase the frequency of communication with the receiving center 20 is an area that matches the environmental condition that is a problem for the electric vehicle, that is, the condition that the startup performance or driving efficiency of the electric vehicle is reduced. Is mentioned.

  In particular, an electric vehicle equipped with a fuel cell that needs to be warmed up at the time of start-up is generally known as a problem such as a decrease in starting performance at the time of cold engine, but the importance becomes a problem as such an electric vehicle. The higher the region that matches the environmental conditions, the higher the setting. Specifically, examples of the low temperature region that is likely to cause a decrease in start-up performance during cold operation include a mountainous region, a highland region, a high latitude region, a snowy region, and the like. Yes.

  In addition to low-temperature areas, examples of areas that affect electric vehicles include hot springs where poisoning due to sulfur is considered, urban areas where high-temperature environments are considered, low-latitude areas, and coastal areas. The status is set with high importance.

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 10 performs a series of processes as shown in FIG. 8 according to the control of the main calculation unit 13, thereby saving power according to the situation based on the current position and the mapping information.

  First, as shown in FIG. 8, when the main calculation unit 13 performs the processing of step S1 to step S11 shown in FIG. 6 previously, in step S21, the stored mapping information is referred to and step S11 is performed. The degree of importance at the current position calculated in the above is searched and calculated.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to a predetermined time interval T1, and repeats the processing from step S1. .

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 proceeds to step S22 and sets the time interval T according to the importance. For example, when the importance calculated in step S21 is lower than a predetermined value, the main calculation unit 13 determines that the region does not match the environmental condition that is a problem as the electric vehicle, and sets the time interval T as the time interval. A predetermined time interval T2 longer than T1 is set, and the processing from step S1 is repeated.

  On the other hand, when the importance is equal to or greater than the predetermined value, the main calculation unit 13 determines that the electric vehicle is an area that matches the environmental condition that is a problem, and sets the time interval T to the time interval T1 described above. The processing from step S1 is repeated. Of course, the setting of the time interval is not limited to two of T1 and T2, and for example, a time interval of a type corresponding to the divided degree of importance may be set.

  As described above, when the key switch is turned off, the in-vehicle wireless device 10 is based on the mapping information in which the degree of importance for each region is mapped to the map information according to the control of the main calculation unit 13. The degree of importance is calculated, and the operation frequency of the mobile phone device 11 is changed based on the degree of importance to save power.

[Effect of the third embodiment]
As described in detail above, the in-vehicle wireless device 10 according to the third embodiment is mapping information in which the current position obtained by the GPS data processing device 12 and the degree of importance for each region are mapped in advance to the map information. Based on the above, the importance level at the current position is calculated, and the operation frequency of the mobile phone device 11 is controlled based on the calculated importance level. The transmission frequency of the vehicle information to the reception center 20 can be changed according to the stop location of the vehicle, and the number of transmissions in an area where the vehicle information is unnecessary can be reduced, thereby reducing power consumption. Therefore, the in-vehicle wireless device 10 can extend the duration of the vehicle battery and prevent the vehicle battery from being overdischarged, and can reliably transmit necessary information to the outside.

  In addition, the in-vehicle wireless device 10 sets an area where priority should be given to power saving and an area where priority should be given to transmission of vehicle information by setting a high degree of importance for an area that matches the environmental condition that is a problem as an electric vehicle. They can be set separately, and can be set so that more vehicle information is acquired by the reception center 20, and the power saving function and the vehicle information transmission function can be set appropriately.

[Fourth Embodiment]
Next, an in-vehicle wireless device according to the fourth embodiment will be described. In the description of the fourth embodiment, the same parts as those in the first to third embodiments described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof is omitted. To do.

  The on-vehicle wireless device according to the fourth embodiment is not a radio wave intensity or importance, but a relay device provided between the mobile phone device 11 and the reception center 20 when the mobile phone device 11 communicates with the reception center 20. Among these base stations, the operation frequency of the mobile phone device 11 is controlled based on the distance from the in-vehicle wireless device 10 to the nearest base station.

[Configuration of in-vehicle wireless device]
The in-vehicle wireless device 10 has the configuration shown in FIG. For example, as shown in FIG. 9, the in-vehicle wireless device 10 stores map information in which the position of the base station is recorded in a memory in the main calculation unit 13.

  Here, in the wireless communication by the mobile phone device 11, the distance from the in-vehicle wireless device 10 to the base station is generally proportional to the radio wave intensity. The in-vehicle wireless device 10 pays attention to such a phenomenon, and uses the distance from the current position to the base station instead of the radio wave intensity used in the first embodiment or the second embodiment.

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 10 performs a series of processes as shown in FIG. 10 according to the control of the main calculation unit 13, thereby saving according to the situation based on the distance from the current position to the nearest base station. Plan for power.

  First, as shown in FIG. 10, when performing the processing of steps S1 to S11 shown in FIG. 6, the main calculation unit 13 refers to the stored map information in step S31, and proceeds to step S11. The distance from the current position calculated in this way to the nearest base station to be wirelessly connected when the mobile phone device 11 communicates with the receiving center 20 is calculated. Since the position data obtained by the GPS data processing device 12 is data composed of latitude and longitude, the distance between two points from the current position to the base station is calculated using a general method based on the position data. Can be calculated.

  At this time, a power root is generated in the process of calculating the distance. Therefore, the main calculation unit 13 may store the root value that should correspond to a certain value in a memory in advance and calculate the distance by referring to this table. Of course, when the main arithmetic unit 13 is constituted by a microcomputer such as a CPU, the main arithmetic unit 13 can directly perform the calculation without requiring a table.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to a predetermined time interval T1, and repeats the processing from step S1. .

  On the other hand, when determining that the key switch is in the OFF state, the main computation unit 13 proceeds to step S32 and sets a time interval T according to the distance. For example, when the distance calculated in step S31 is equal to or less than a predetermined value, the main calculation unit 13 determines that the radio wave intensity is sufficiently strong, sets the time interval T to the above-described time interval T1, and starts from step S1. Repeat the process. On the other hand, when the distance is greater than the predetermined value, the main calculation unit 13 determines that the radio wave intensity is weak, sets the time interval T to a predetermined time interval T2 longer than the time interval T1, and performs the processing from step S1. repeat.

  Note that the time interval T2 is not a constant value, and is preferably variable so that the value of the time interval T2 increases as the distance increases. Accordingly, the main calculation unit 13 sets an appropriate time interval T2 by referring to a table in which the value of the time interval T2 corresponding to the distance is associated or by linearly increasing the value according to the distance. .

  As described above, when the key switch is turned off, the in-vehicle wireless device 10 changes the operation frequency based on the distance from the current position to the nearest base station according to the control of the main calculation unit 13 to save the operation. Plan for power.

[Effect of Fourth Embodiment]
As described above in detail, the in-vehicle wireless device 10 according to the fourth embodiment is based on the map information in which the position of the base station is recorded, from the current position obtained by the GPS data processing device 12 to the nearest base station. And the operation frequency of the mobile phone device 11 is controlled based on the calculated distance. As a result, the in-vehicle wireless device 10 can calculate the distance more easily than in the case of mapping the radio field intensity, extend the duration of the vehicle battery, and overdischarge the vehicle battery. In addition to being able to reliably transmit necessary information to the outside, it is effective in reducing memory capacity and reducing costs.

[Fifth Embodiment]
Next, an in-vehicle wireless device according to a fifth embodiment will be described. In the description of the fifth embodiment, the same portions as those in the first to fourth embodiments described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof is omitted. To do.

  The in-vehicle wireless device 10 according to the fifth embodiment operates based on the operating frequency of the mobile phone device 11 at the current position calculated by the receiving center 20.

[Operation of in-vehicle wireless device]
The in-vehicle wireless device 10 has the configuration shown in FIG. This in-vehicle wireless device 10 goes through a series of processes as shown in FIG. 11 according to the control of the main calculation unit 13, and thereby saves power according to the situation based on the operating frequency calculated by the receiving center 20. .

  First, as shown in FIG. 11, the main calculation unit 13 indicates the current position obtained by the GPS data processing device 12 in step S <b> 41 when the processing of step S <b> 1 and step S <b> 2 previously shown in FIG. 10 is performed. The position data is transmitted to the receiving center 20.

  In response to this, the reception center 20 calculates the distance from the nearest base station wirelessly connected to the in-vehicle wireless device 10 to the in-vehicle wireless device 10 when the mobile phone device 11 performs communication from the current position of the electric vehicle. To do. At this time, the reception center 20 can calculate the distance from the nearest base station to the in-vehicle wireless device 10 as in the fourth embodiment. Further, the reception center 20 calculates the operating frequency of the in-vehicle wireless device 10 at the current position based on the calculated distance, and transmits this operating frequency data to the in-vehicle wireless device 10.

  When the operation frequency data is transmitted from the reception center 20 in this way, the main calculation unit 13 receives the operation frequency data by the mobile phone device 11 in step S42.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to the time interval T1, which is a normal communication interval, and step S1. Repeat the process from.

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 proceeds to step S43, and the time interval T1 according to the operation frequency data received from the reception center 20 in step S42. Alternatively, the time interval T2 is set, and the processing from step S1 is repeated.

  As described above, when the key switch is turned off, the in-vehicle wireless device 10 changes the operation frequency based on the operation frequency calculated by the reception center 20 according to the control of the main calculation unit 13 to save power. Plan.

[Effect of Fifth Embodiment]
As described above in detail, the in-vehicle wireless device 10 according to the fifth embodiment is a mobile phone at the current position calculated by the receiving center 20 based on the distance from the current position of the in-vehicle wireless device 10 to the nearest base station. Since the cellular phone device 11 is operated according to the operation frequency of the device 11, a memory for storing map information is not required, and power consumption can be reduced and costs can be reduced.

[Sixth Embodiment]
Next, an in-vehicle wireless device according to a sixth embodiment will be described. In the description of the sixth embodiment, the same parts as those in the first to fifth embodiments described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof is omitted. To do.

  The in-vehicle wireless device 10 according to the sixth embodiment determines the operation frequency of the mobile phone device 11 based on the remaining amount of the vehicle battery as a power source, not the radio wave intensity, the importance, the distance from the base station, or the like. It is something to control.

[Configuration of in-vehicle wireless device]
As shown in FIG. 12, the in-vehicle wireless device 10 is connected to a vehicle battery 30 serving as a power source, and operates the main arithmetic unit 13 and the mobile phone device 11 based on electric power supplied from the vehicle battery 30. Let

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 10 achieves power saving according to the situation based on the remaining amount of the vehicle battery 30 according to the control of the main calculation unit 13.

  FIG. 13 shows the time transition of the communication processing from the in-vehicle wireless device 10 to the reception center 20, the voltage indicating the remaining amount of the vehicle battery 30, and the startup state of the electric vehicle.

  First, the main computing unit 13 does not need to perform a power saving operation, as in the first to fifth embodiments, during traveling in which the key switch that activates the electric vehicle is on. Therefore, while the key switch is in the ON state, the main calculation unit 13 periodically performs GPS data processing at the time interval T1, which is a normal communication interval, regardless of the remaining amount of the vehicle battery 30. The device 12 performs processing for obtaining the current position, and transmits the processed data and the like to the reception center 20 via the mobile phone device 11.

  On the other hand, when the key switch is turned off, the main arithmetic unit 13 does not charge the vehicle battery 30 by a generator (not shown), so that the remaining amount of the vehicle battery 30 starts to decrease. Therefore, the main calculation unit 13 shifts to the power saving mode shown below.

  In other words, after the key switch is turned off, the main calculation unit 13 transmits data from the mobile phone device 11 to the reception center 20 a plurality of times, and detects the battery voltage indicating the remaining amount of the vehicle battery 30. When the battery voltage falls below the predetermined determination value V1, the time interval for performing communication with the receiving center 20 is increased to reduce power consumption. Change to a long predetermined time interval T2.

  More specifically, the main arithmetic unit 13 performs a series of processes as shown in FIG. 14 to save power according to the situation based on the remaining amount of the vehicle battery 30.

  First, as shown in FIG. 14, when the main calculation unit 13 performs the processing of step S1 and step S2 previously shown in FIG. 11, in step S51, the remaining amount of the vehicle battery 30, that is, the vehicle The battery voltage of the battery 30 is detected.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to a predetermined time interval T1, and repeats the processing from step S1. .

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 proceeds to step S52 and responds to the remaining amount (battery voltage) of the vehicle battery 30 detected in step S51. Set the time interval T. For example, when the main calculation unit 13 determines that the remaining amount (battery voltage) of the vehicle battery 30 detected in step S51 is not equal to or less than the predetermined determination value V1, the remaining amount of the vehicle battery 30 is less. It is determined that there is enough, the time interval T is set to the time interval T1 described above, and the processing from step S1 is repeated.

  On the other hand, when it is determined that the remaining amount (battery voltage) of the vehicle battery 30 is equal to or less than the predetermined determination value V1, the main calculation unit 13 determines that the remaining amount of the vehicle battery 30 is low. The time interval T is set to the above-described time interval T2, and the processing from step S1 is repeated. The time interval T2 is not a constant value, and is preferably variable so that the value of the time interval T2 increases as the remaining amount of the vehicle battery 30 decreases. Therefore, the main calculation unit 13 can be appropriately set by referring to a table in which the value of the time interval T2 corresponding to the remaining amount of the vehicle battery 30 is associated or by linearly increasing the value depending on the remaining amount. A short time interval T2 is set.

  Thus, when the key switch is turned off, the in-vehicle wireless device 10 changes the operating frequency of the mobile phone device 11 based on the remaining amount of the vehicle battery 30 according to the control of the main calculation unit 13. , To save power.

[Effects of Sixth Embodiment]
As described above in detail, the in-vehicle wireless device 10 according to the sixth embodiment detects the remaining amount of the vehicle battery 30 connected as a power source, and operates the mobile phone device 11 based on the detected remaining amount. By controlling the frequency, it is possible to perform further power saving driving when the remaining amount of the vehicle battery 30 is reduced, and it is possible to reliably prevent overdischarge of the vehicle battery 30.

[Seventh Embodiment]
Next, an in-vehicle wireless device according to a seventh embodiment will be described. In the description of the seventh embodiment, the same portions as those in the first to sixth embodiments described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof is omitted. To do.

  The in-vehicle wireless device according to the seventh embodiment operates the mobile phone device 11 based on the current time and the current month, not the radio wave intensity, the importance, the distance from the base station, or the remaining amount of the vehicle battery. It controls the frequency.

[Configuration of in-vehicle wireless device]
As shown in FIG. 15, the in-vehicle wireless device 50 includes a time measuring timer 51 that is a time measuring device for measuring time in addition to the above-described mobile phone device 11, GPS data processing device 12, and main calculation unit 13.

  The time measurement timer 51 provides a calendar function by measuring time according to the control of the main calculation unit 13. Specifically, the time measurement timer 51 presents the current date and time according to the control of the main calculation unit 13. The time measurement timer 51 supplies time data indicating the current time measured to the main calculation unit 13.

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 50 performs a series of processes as shown in FIG. 16 according to the control of the main calculation unit 13, thereby saving on the basis of the current time measured by the time measurement timer 51. Plan for power.

  First, as shown in FIG. 16, when the main calculation unit 13 performs the processing of step S1 and step S2 previously shown in FIG. 14, the current time is calculated using the calendar function by the time measurement timer 51 in step S61. calculate.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to a predetermined time interval T1, and repeats the processing from step S1. .

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 proceeds to step S62 and calculates a time interval T2 corresponding to the current time calculated in step S61. At this time, as shown in FIG. 17, for example, the main calculation unit 13 stores a table in which the time interval values T10, T11, T12, T13, and T14 corresponding to each time are associated in advance in the memory. The time interval T2 is calculated by referring to the table.

  In step S63, the main calculation unit 13 sets the time interval T2 calculated in step S62 as the time interval T, and repeats the processing from step S1.

  As described above, when the key switch is turned off, the in-vehicle wireless device 50 changes the operating frequency of the mobile phone device 11 based on the current time according to the control of the main calculation unit 13 to save power. .

  The in-vehicle wireless device 50 changes the operation frequency of the mobile phone device 11 based on the current date by storing a table in which the time in the table shown in FIG. Power saving.

  In addition, the in-vehicle wireless device 50 appropriately sets the item of the night time zone for the table shown in FIG. 17 when information assuming cold at night is necessary as an element that affects the starting performance at the time of cold operation. The time interval T of the time zone may be set shorter than the time interval T1, and the operation frequency of the mobile phone device 11 may be increased. Similarly, the in-vehicle wireless device 50 can also set a season in which snow, freezing, etc. are considered as factors that affect the starting performance particularly during cold operation in the table shown in FIG. 17, and the time interval T in that season can be set. May be set shorter than the time interval T1, and the operation frequency of the mobile phone device 11 may be increased. As a result, the in-vehicle wireless device 50 can obtain information on a generally known time-down period or season that matches the conditions, such as a decrease in start-up performance during cold operation, and realizes a power saving function. However, important information can be obtained with certainty.

[Effect of the seventh embodiment]
As described in detail above, the in-vehicle wireless device 50 according to the seventh embodiment controls the operation frequency of the mobile phone device 11 based on the current time or the current date measured by the time measurement timer 51. The number of data transmissions of the mobile phone device 11 can be reduced and the power consumption can be reduced according to the time zone or season when the importance of the vehicle information is low. Therefore, the in-vehicle wireless device 50 can extend the duration of the vehicle battery and prevent over-discharge of the vehicle battery, and can reliably transmit necessary information to the outside.

[Eighth Embodiment]
Next, an in-vehicle wireless device according to an eighth embodiment will be described. In the description of the eighth embodiment, the same parts as those in the first to seventh embodiments described above are denoted by the same reference numerals and the same step numbers, and detailed description thereof is omitted. To do.

  The in-vehicle wireless device 10 according to the eighth embodiment is not a radio wave intensity, an importance level, a distance from a base station, a remaining amount of a vehicle battery, or a current time or current date from a GPS satellite via a GPS antenna. The operating frequency of the cellular phone device 11 is controlled based on the received signal strength.

[Operation of in-vehicle wireless device]
The in-vehicle wireless device 10 has the configuration shown in FIG. Such an in-vehicle wireless device 10 achieves power saving according to the situation based on the received signal intensity received from the GPS satellite via the GPS antenna 12a under the control of the main calculation unit 13.

  FIG. 18 shows the time transition of the communication processing from the in-vehicle wireless device 10 to the receiving center 20, the data processing by the GPS data processing device 12, the received signal strength received from the GPS satellite, and the start state of the electric vehicle.

  First, the main calculation unit 13 does not need to perform the power saving operation during the traveling in which the key switch for starting the electric vehicle is turned on, as in the first to seventh embodiments. Therefore, while the key switch is in the on state, the main calculation unit 13 periodically updates the GPS data at the time interval T1, which is the normal communication interval, regardless of the received signal strength received from the GPS satellite. Processing for obtaining the current position is performed by the processing device 12, and the processed data or the like is transmitted to the receiving center 20 via the mobile phone device 11.

  On the other hand, when the key switch is turned off, the main calculation unit 13 shifts to the power saving mode shown below.

  That is, the main arithmetic unit 13 performs processing by the GPS data processing device 12 and the cellular phone device after the time interval T1 has elapsed since the previous data transmission to the receiving center 20 for the first time after the key switch is turned off. 11 performs a data transmission process from 11 to the reception center 20. At this time, the main calculation unit 13 calculates the received signal strength received from the GPS satellite.

  Then, when the calculated received signal strength is equal to or less than the predetermined determination value R1, the main calculation unit 13 determines that the received signal strength is weak, and performs processing by the GPS data processing device 12 and the mobile phone device 11 to the receiving center. The time interval for performing the data transmission process to 20 is changed to a time interval T2 longer than the above-described time interval T1.

  More specifically, the main arithmetic unit 13 performs a series of processes as shown in FIG. 19 to save power according to the situation based on the received signal strength received from the GPS satellite.

  First, as shown in FIG. 19, the main calculation unit 13 receives the reception signal from the GPS satellite via the GPS antenna 12a in step S71 when the processing of step S1 and step S2 shown in FIG. 16 is performed. In step S72, the received signal strength is calculated. The main calculation unit 13 receives the received signal based on, for example, the time required for the GPS data processing device 12 to calculate the current position based on the received signal, the number of GPS satellites captured by the GPS data processing device 12, and the like. The intensity can be calculated.

  If the main calculation unit 13 determines in step S4 that the key switch is on, in step S5, the main calculation unit 13 sets the time interval T to the above-described time interval T1, and repeats the processing from step S1. .

  On the other hand, when determining that the key switch is in the OFF state, the main calculation unit 13 proceeds to step S73, and sets the time interval T according to the received signal strength calculated in step S72. For example, when the main calculation unit 13 determines that the received signal strength calculated in step S72 is not equal to or less than the predetermined determination value R1 described above, the main calculation unit 13 determines that the received signal strength is strong and sets the time interval T to the time described above. The interval T1 is set, and the processing from step S1 is repeated. On the other hand, when the main calculation unit 13 determines that the received signal strength is equal to or less than the predetermined determination value R1 described above, the main calculation unit 13 determines that the received signal strength is weak and sets the time interval T to the time interval T2 described above. The processing from step S1 is repeated.

  As described above, when the key switch is turned off, the in-vehicle wireless device 10 changes the operation frequency of the mobile phone device 11 based on the received signal strength received from the GPS satellite according to the control of the main calculation unit 13. To save power.

[Effect of Eighth Embodiment]
As described above in detail, the in-vehicle wireless device 10 according to the eighth embodiment calculates the received signal strength received from the GPS satellite by the GPS data processing device 12, and based on the calculated received signal strength, the mobile phone device 11 operation frequency is controlled. As described above, when the in-vehicle wireless device 10 normally calculates the current position by the GPS data processing device 12 and the reception state from the GPS satellite is bad, the calculation time becomes long and the power consumption increases. However, power consumption can be reduced by reducing the operating frequency of the mobile phone device 11. Therefore, the in-vehicle wireless device 10 can extend the duration of the vehicle battery and prevent the vehicle battery from being overdischarged, and can reliably transmit necessary information to the outside.

[Ninth Embodiment]
Next, an in-vehicle wireless device according to a ninth embodiment will be described. In the description of the ninth embodiment, the same parts as those in the first to eighth embodiments described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The in-vehicle wireless device according to the ninth embodiment is not the radio wave intensity, the importance, the distance from the base station, the remaining amount of the vehicle battery, the current time or the current month, or the received signal intensity received from the GPS satellite, The operation frequency of the mobile phone device 11 is controlled based on an analog data value obtained from a sensor value detected by a predetermined analog sensor.

[Configuration of in-vehicle wireless device]
As shown in FIG. 20, the in-vehicle wireless device 100 includes analog data processing means having analog input ports (not shown) in addition to the above-described mobile phone device 11, GPS data processing device 12, and main calculation unit 13. A processing apparatus 101 is provided. The analog sensor 101a may be any sensor that detects a value that affects the starting performance, fuel consumption, importance, etc. of the electric vehicle in the environment around the electric vehicle, such as a temperature sensor. For example, it detects brightness. Illuminance sensor etc. are mentioned.

  The analog data processing device 101 inputs a sensor value detected by the analog sensor 101a that detects a predetermined parameter and performs a predetermined process under the control of the main calculation unit 13. The analog data processing device 101 supplies the analog data obtained by processing to the main calculation unit 13 and stores it in the memory.

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 100 achieves power saving according to the situation based on the analog data value obtained from the sensor value detected by the analog sensor 101a according to the control of the main calculation unit 13.

  FIG. 21 shows the time transition of the communication processing from the in-vehicle wireless device 100 to the reception center 20, the sensor value detected by the analog sensor 101a, and the starting state of the electric vehicle.

  First, the main calculation unit 13 does not need to perform a power saving operation during traveling in which the key switch for starting the electric vehicle is in the ON state, as in the first to eighth embodiments. Therefore, while the key switch is in the ON state, the main arithmetic unit 13 periodically performs GPS at a time interval T1, which is a normal communication interval, regardless of the sensor value detected by the analog sensor 101a. The data processed by the data processing device 12 is transmitted to the receiving center 20.

  On the other hand, when the key switch is turned off, the main calculation unit 13 shifts to the power saving mode shown below.

  That is, after the key switch is turned off, the main calculation unit 13 calculates an analog data value obtained by processing the sensor value detected by the analog sensor 101a by the analog data processing device 101.

  When the calculated analog data value is equal to or greater than the predetermined determination value D1, the main calculation unit 13 determines that the importance of the analog data is not high according to the control of the main calculation unit 13, and the reception center 20 Is changed to a predetermined time interval T2 longer than the above-described time interval T1.

  When the calculated analog data value is not equal to or greater than the predetermined determination value D1, the main calculation unit 13 determines that the importance of the analog data is high, and performs communication between the mobile phone device 11 and the reception center 20. The time interval to be performed is further changed to the above-described time interval T2. The main calculation unit 13 may set a plurality of values in the memory as the determination value D1, or store a table in which the range is set in the memory.

  Further, when the calculated analog data value is equal to or greater than the predetermined determination value D1, the main calculation unit 13 determines that the importance of the analog data is high, and sets a time interval for performing communication with the reception center 20. On the other hand, if the calculated analog data value is not equal to or greater than the predetermined determination value D1, while setting the time interval T1 described above, it is determined that the importance of the analog data is not high, and communication with the receiving center 20 is performed. You may make it set the time interval to perform to the time interval T2 mentioned above. That is, the main calculation unit 13 may determine the magnitude of the analog data value and the level of importance according to the type of parameter detected by the analog sensor 101a.

  In this way, when the key switch is turned off, the in-vehicle wireless device 100 is a mobile phone based on the analog data value obtained from the sensor value detected by the analog sensor 101a according to the control of the main calculation unit 13. The operating frequency of the device 11 is changed to save power.

[Effects of Ninth Embodiment]
As described above in detail, the in-vehicle wireless device 100 according to the ninth embodiment calculates an analog data value obtained from the sensor value detected by the analog sensor 101a, and based on the calculated analog data value, By controlling the operating frequency of the telephone device 11, it becomes possible to grasp the environmental conditions at the stop location of the electric vehicle based on the acquired analog data, so that the starting performance and driving efficiency of the electric vehicle are reduced. It is possible to reduce power consumption while acquiring necessary data, such as increasing the operation frequency under environmental conditions. Therefore, the in-vehicle wireless device 100 can extend the duration of the vehicle battery and prevent the vehicle battery from being overdischarged, and can reliably transmit necessary information to the outside.

[Tenth embodiment]
Next, an in-vehicle wireless device according to the tenth embodiment will be described. In the description of the tenth embodiment, the same parts as those in the first to ninth embodiments described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The in-vehicle wireless device according to the tenth embodiment is a specific example of the above-described ninth embodiment, includes a temperature sensor that detects an outside air temperature, a cooling water temperature, and the like, and is based on a sensor value detected by the temperature sensor. The operation frequency of the mobile phone device 11 is controlled.

[Configuration of in-vehicle wireless device]
Generally, parameters that affect the starting performance and driving performance of an electric vehicle include the outside air temperature and the cooling water temperature circulated inside the vehicle to cool the fuel cell and other devices. Therefore, as shown in FIG. 22, the in-vehicle wireless device 100 inputs a sensor value detected by a temperature sensor 101b as a specific example of the analog sensor 101a by the analog data processing device 101 and performs a predetermined process.

[Operation of in-vehicle wireless device]
Such an in-vehicle wireless device 100 basically sets the time interval T due to a decrease in temperature based on the sensor value detected by the temperature sensor 101b according to the control of the main calculation unit 13, as shown in FIG. Although power saving is achieved by changing from T1 to T2, more specific processing will be described here.

  FIG. 23 shows communication processing from the in-vehicle wireless device 100 to the reception center 20, data processing by the GPS data processing device 12, storage processing of analog data in the memory, and time transition of the activation state of the electric vehicle.

  That is, the main calculation unit 13 sets the time interval so that the processing timing is different for each of the mobile phone device 11, the GPS data processing device 12, and the main calculation unit 13 which are processing modules constituting the in-vehicle wireless device 100. Set. In other words, the main calculation unit 13 performs communication processing from the mobile phone device 11 to the reception center 20, data processing by the GPS data processing device 12, and storage processing of analog data in the memory at different timings. Set the time interval.

  Note that the main computing unit 13 is less burdened on the vehicle battery due to overcurrent while the key switch is in the on state, so the communication processing from the mobile phone device 11 to the receiving center 20 and the GPS data processing device 12 The data processing and the storage processing of the analog data in the memory may be executed at different timings or may be executed simultaneously.

  In addition, as shown in FIG. 24, the main calculation unit 13 may set different time intervals for each processing module constituting the in-vehicle wireless device 100. Specifically, the time interval TP1 for communication processing from the mobile phone device 11 to the receiving center 20 when the key switch is on, the time interval TG1 for data processing by the GPS data processing device 12, and the analog data for the memory Each time interval TD1 of the storage process is set. When the key switch is turned off, the key switches are changed to time intervals TP2, TG2, and TD2 that are longer than those in the on state, respectively. As shown in FIG. In such a case, the time interval TD3 is changed to a time interval TD3 which is longer than the time interval TD2 of the analog data storing process for the memory.

  Note that the in-vehicle wireless device 100 may include a pressure sensor, an acceleration sensor, and the like in addition to the temperature sensor 101b.

[Effect of the tenth embodiment]
As described above in detail, the in-vehicle wireless device 100 according to the tenth embodiment is an analog obtained from the sensor value detected by the temperature sensor 101b that detects the outside air temperature or the cooling water temperature according to the control of the main calculation unit 13. The data value is calculated, and the operation frequency of the mobile phone device 11 is controlled based on the calculated analog data value. In general, an electric vehicle has an effect on performance according to an environmental temperature or a vehicle temperature. However, the in-vehicle wireless device 100 uses analog data obtained from a sensor value detected by a temperature sensor 101b that detects an outside air temperature or a cooling water temperature. By controlling the operation frequency of the mobile phone device 11 based on the value, it is possible to reduce power consumption while acquiring important information.

  The in-vehicle wireless device 100 is a processing module that configures the in-vehicle wireless device 100 according to the control of the main arithmetic unit 13 and performs processing differently for each of a plurality of processing modules that perform different processing. By doing so, it is possible to avoid problems due to the concentration of power consumption due to simultaneous operation of the processing modules and the overcurrent caused by this.

[Eleventh embodiment]
Next, the in-vehicle wireless device according to the eleventh embodiment will be described. In the description of the eleventh embodiment, the same parts as those in the first to tenth embodiments described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The in-vehicle wireless device according to the eleventh embodiment is a modification of the above-described ninth embodiment, and supplies power to each processing module constituting the in-vehicle wireless device.

  As described above, the in-vehicle wireless device 100 includes a plurality of processing modules that execute different processes, such as the mobile phone device 11, the GPS data processing device 12, and the analog data processing device 101. As shown in FIG. 25, power is individually supplied to each processing module in accordance with the control of the main calculation unit 13. That is, the in-vehicle wireless device 100 is operated by supplying power only to a processing module that requires operation.

  For example, the in-vehicle wireless device 100 is provided with a relay, a semiconductor switch, and the like that operate according to the control of the main calculation unit 13 and operates these relays, the semiconductor switch, etc. And stop.

  As described above, the in-vehicle wireless device 100 according to the eleventh embodiment is a processing module that configures the in-vehicle wireless device 100 according to the control of the main arithmetic unit 13, and individually processes a plurality of processing modules that execute different processes. Since power is controlled to be supplied, useless power is not supplied to a processing module that is not operating, and power consumption can be reduced. Therefore, the in-vehicle wireless device 100 can extend the duration of the vehicle battery and prevent the vehicle battery from being overdischarged, and can reliably transmit necessary information to the outside.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and even if it is a form other than this embodiment, as long as it does not depart from the technical idea of the present invention, it depends on the design and the like. Of course, various modifications are possible.

It is a block diagram explaining the structure of the vehicle-mounted radio | wireless apparatus which concerns on 1st Embodiment to which this invention is applied. It is a timing chart explaining the communication process from the vehicle-mounted radio | wireless apparatus which concerns on 1st Embodiment to which this invention is applied to the receiving center, the radio wave intensity | strength exchanged between the said receiving centers, and the time transition of the starting state of an electric vehicle. is there. 5 is a flowchart for explaining a series of processes when power saving is performed according to a situation in the in-vehicle wireless device according to the first embodiment to which the present invention is applied. It is a figure explaining the example of the mapping information memorize | stored in the memory in the vehicle-mounted radio | wireless apparatus which concerns on 2nd Embodiment to which this invention is applied, Comprising: The mapping information which mapped the radio field strength degree for every area with respect to map information It is a figure explaining an example. Timing for explaining communication processing from the in-vehicle wireless device to the receiving center according to the second embodiment to which the present invention is applied, data processing by the GPS data processing device, radio wave intensity based on mapping information, and time transition of the activation state of the electric vehicle It is a chart. It is a flowchart explaining a series of processes at the time of aiming at the power saving according to a condition in the vehicle-mounted radio | wireless apparatus which concerns on 2nd Embodiment to which this invention is applied. It is a figure explaining the example of the mapping information memorize | stored in the memory in the vehicle-mounted radio | wireless apparatus which concerns on 3rd Embodiment to which this invention is applied, Comprising: The mapping information which mapped the importance degree for every area with respect to map information It is a figure explaining an example. It is a flowchart explaining a series of processes at the time of aiming at the power saving according to the condition in the vehicle-mounted radio | wireless apparatus which concerns on 3rd Embodiment to which this invention is applied. It is a figure explaining the example of the map information which recorded the position of the base station memorize | stored in the memory in the vehicle-mounted radio | wireless apparatus which concerns on 4th Embodiment to which this invention is applied. In the vehicle-mounted radio | wireless apparatus which concerns on 4th Embodiment to which this invention is applied, it is a flowchart explaining a series of processes at the time of aiming at the power saving according to a condition. In the vehicle-mounted radio | wireless apparatus which concerns on 5th Embodiment to which this invention is applied, it is a flowchart explaining a series of processes at the time of aiming at the power saving according to a condition. It is a block diagram explaining the structure of the vehicle-mounted radio | wireless apparatus which concerns on 6th Embodiment to which this invention is applied. It is a timing chart explaining the time transition of the communication process from the vehicle-mounted radio | wireless apparatus which concerns on 6th Embodiment to the receiving center, the voltage which shows the residual amount of the battery for vehicles, and the starting state of an electric vehicle. In the vehicle-mounted radio | wireless apparatus which concerns on 6th Embodiment to which this invention is applied, it is a flowchart explaining a series of processes at the time of aiming at the power saving according to a condition. It is a block diagram explaining the structure of the vehicle-mounted radio | wireless apparatus which concerns on 7th Embodiment to which this invention is applied. In the vehicle-mounted radio | wireless apparatus which concerns on 7th Embodiment to which this invention is applied, it is a flowchart explaining a series of processes at the time of aiming at the power saving according to a condition. It is a figure explaining the example of the table memorize | stored in the memory in the vehicle-mounted radio | wireless apparatus which concerns on 7th Embodiment to which this invention is applied, Comprising: The example of the table which matched the value of the time interval according to time is demonstrated. FIG. Explains the communication process from the in-vehicle wireless device to the receiving center according to the eighth embodiment to which the present invention is applied, the data processing by the GPS data processing device, the received signal intensity received from the GPS satellite, and the time transition of the activation state of the electric vehicle. It is a timing chart to do. In the vehicle-mounted radio | wireless apparatus which concerns on 8th Embodiment to which this invention is applied, it is a flowchart explaining a series of processes at the time of aiming at the power saving according to a condition. It is a block diagram explaining the structure of the vehicle-mounted radio | wireless apparatus which concerns on 9th Embodiment to which this invention is applied. It is a timing chart explaining the time transition of the communication processing from the vehicle-mounted radio | wireless apparatus which concerns on 9th Embodiment to which this invention is applied to a receiving center, the sensor value detected by the analog sensor, and the starting state of an electric vehicle. It is a block diagram explaining the structure of the vehicle-mounted radio | wireless apparatus which concerns on 10th Embodiment to which this invention is applied. A communication process from the in-vehicle wireless device to the receiving center according to the tenth embodiment to which the present invention is applied, data processing by the GPS data processing device, storage processing of analog data in the memory, and time transition of the activation state of the electric vehicle will be described. It is a timing chart. A communication process from the in-vehicle wireless device to the receiving center according to the tenth embodiment to which the present invention is applied, data processing by the GPS data processing device, storage processing of analog data in the memory, and time transition of the activation state of the electric vehicle will be described. It is a timing chart, Comprising: It is a timing chart explaining the time transition at the time of setting a different time interval for every apparatus which comprises the said vehicle-mounted radio apparatus. It is a block diagram explaining the structure of the vehicle-mounted radio | wireless apparatus which concerns on 11th Embodiment to which this invention is applied.

Explanation of symbols

10, 50, 100 In-vehicle wireless device 11 Mobile phone device 11a Mobile phone antenna 12 GPS data processing device 12a GPS antenna 13 Main calculation unit 20 Reception center 30 Vehicle battery 51 Time measurement timer 101 Analog data processing device 101a Analog sensor 101b Temperature Sensor

Claims (3)

In an in-vehicle wireless device that periodically transmits data from an electric vehicle to an external receiving center,
A communication means for communicating with the receiving center;
GPS data processing means for receiving a signal transmitted from a GPS satellite and calculating a current position of the electric vehicle based on the received signal;
Storage means for storing mapping information in which the degree of importance for each region is previously mapped to map information;
And the current position obtained by the GPS data processing unit, based on said mapping information stored in the storage means, wherein when calculating the importance of the current position, a lower calculated importance importance is compared to the frequency of operation of said communication means when high, and control means for controlling a low operation frequency of the communication means,
The in-vehicle wireless device according to claim 1, wherein the importance is set to be higher in a region that matches a condition in which the startup performance or driving efficiency of the electric vehicle is reduced . Areas with a high degree of importance include mountainous areas, highlands, high latitudes, snowy areas, hot spring towns that can be poisoned by sulfur, and high-temperature environments as low-temperature areas that are likely to cause a decrease in starting performance when cold. The in-vehicle wireless device according to claim 1, comprising at least one of a conceivable urban area, a low-latitude area, and a coastal area. In an in-vehicle wireless device that periodically transmits data from an electric vehicle to an external receiving center,
A communication means for communicating with the receiving center;
GPS signal processing means that receives a signal transmitted from a GPS satellite, calculates a current position of the electric vehicle based on the received signal, and operates at the same operating frequency as the communication means ;
The GPS signal processing means calculates the received signal strength received from the GPS satellite, and when the calculated received signal strength is low, it compares with the operating frequency of the communication means and the GPS data processing means when the received signal strength is high. And a control means for controlling the operating frequency of the communication means and the GPS data processing means to be low.

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