JP4428989B2 - Information processing device, parent device and child device in information processing device, method of automatically assigning child device identification information in information processing device - Google Patents

Description

  The present invention relates to an information processing apparatus, particularly an information processing apparatus suitable for establishing wireless communication between a master unit and a slave unit by automatically detecting the slave unit in a device configuration in which data measured by a plurality of slave units is collected by a single master unit. Or, it relates to a master unit and a slave unit.

  Conventionally, there are many cases in which a master unit and a slave unit are provided as a form of an information processing apparatus, and the master unit wirelessly collects data acquired by the slave unit and executes predetermined processing. The telemeter system is considered to have such a form. In the telemeter system, the master unit collects data measured by the slave unit having a measurement function. Then, the base unit or the external information processing apparatus connected to the base unit executes a predetermined process based on the collected measurement data.

  By the way, a telemeter system generally associates a master unit and a slave unit on a one-to-one basis. However, in recent years, a plurality of slave units are associated with one master unit, and measurement at a plurality of locations is performed in parallel. In some cases, the configuration is configured so that it can be executed (see Patent Documents 1 and 2, for example).

  In Patent Document 1, when performing wireless communication with a plurality of measuring means, for example, there is disclosed an apparatus configuration that has two frequencies used for transmission and reception, and performs communication using the other frequency when one frequency is in use. Has been. Patent Document 2 discloses a configuration in which a unique ID is assigned in advance to a slave unit and wireless communication is performed by adding the ID to transmission data.

Japanese Patent Laid-Open No. 10-63974 JP 2000-224673 A

  However, when a plurality of use frequencies are used as in Patent Document 1, wireless communication cannot be performed in parallel with more measurement means than the number of use frequencies prepared by the measurement means. Therefore, the number of measuring means cannot be increased beyond the operating frequency, and flexibility is lacking.

  Further, in Patent Document 2, there is no restriction as in Patent Document 1 in order to perform communication using the ID assigned to each child device, but it is troublesome because a unique ID must be assigned to each child device. . Further, even when viewed from the parent device side, it is necessary to grasp in advance which ID is assigned to the child device provided at a predetermined location, and ID management becomes troublesome.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an information processing apparatus and an information processing apparatus that can easily realize data transmission / reception between a parent device and a plurality of child devices. It is to provide a method of automatically assigning parent device, child device, and child device identification information.

In order to achieve the above object, a slave unit in an information processing apparatus according to the present invention is a slave unit in an information processing apparatus that wirelessly transmits and receives data to and from a master unit having a data collection function. When the detection request issued from the machine is received, the response timing for the detection request is determined based on the number uniquely assigned to it, and the detection request issued by another child machine before the determined response timing elapses A response information sending means for sending back response information when response information according to the response is not received, and a specification for sending back its own specification information in response to a transmission request from the master unit after replying the response information and information transmitting means, when receiving normally the specification information transmitted after specification information back from the base unit, transmits a response signal indicating that receives the specification information normally And answer signal transmitting unit, the specification information master unit is transmitted by the specification information sending unit before performing the master unit and the data exchange a handset identification information given from the master unit after the response signal replied Slave unit identification information acquisition means for acquiring slave unit identification information stored in association with the master unit, and data communication for exchanging data with the master unit by adding the slave unit identification information given from the master unit Means.

Further, it has a measuring means for collecting sensor data using the connected sensor means, and the slave unit identification information acquisition mode or the slave unit identification information acquisition based on the operations of the response information transmitting unit and the slave unit identification information acquiring unit It is possible to operate in a measurement mode based on the operation of the measurement means later.

The master unit in the information processing apparatus according to the present invention is configured to respond to a detection request transmitted to the slave unit in the master unit in the information processing apparatus that collects data transmitted wirelessly from a plurality of slave units having a data transmission function. In response, the specification information collecting means for collecting the specification information by transmitting a specification information transmission request to the slave device that has returned the response information first, and the specification information received when the specification information collecting means collects It means for transmitting to the slave unit, if a response signal indicating that receives the specification information properly from the slave unit to the transmitted specification information is sent back, the handset identification information to the handset Correspondence between the slave unit identification information giving means to be transmitted, the slave unit identification information sent by the slave unit identification information giving unit before data exchange with the slave unit, and the specification information collected by the specification information collecting means Date And having a storage means for storing the specification information storage means, and data communication means for performing slave unit exchange data by adding the handset identification information to the data Te.

Further, characterized by having a pre-SL specification information collection means based on the collected specification information data collection means to collect the identified type of data from the slave unit.

  An information processing apparatus according to the present invention includes a combination of the slave unit and the master unit described above.

  The master unit and the slave unit are mounted on a vehicle, and the slave unit includes a measuring unit that measures a state quantity of the vehicle, and the slave unit is provided with the measured state quantity of the vehicle. Machine identification information is added and transmitted to the parent machine.

  The slave unit is disposed on a wheel, and the master unit includes antenna means disposed in a position near the wheel where the slave unit is disposed and capable of wireless communication with the slave unit. It is characterized by.

A method of automatically assigning slave unit identification information in an information processing apparatus according to the present invention includes: a plurality of slave units having a data transmission function; and a master unit having a data collection function; In the method of automatically assigning slave unit identification information in the device, the master unit receives a detection request step for transmitting a detection request to the slave unit, and each slave unit receives the detection request transmitted by the detection request step. The response timing for the detection request is determined based on the number uniquely assigned to the detection request, and the response information corresponding to the detection request issued by another slave unit before the determined response timing elapses is not received. A response information transmission step of returning response information when the response is received, and transmission of specification information to the slave unit that has returned the response information in the master unit A transmission request transmitting step of transmitting the determined, in each of the slave unit, when receiving the transmission request specification information transmission request transmitted by the transmission step, its own specification information held therein in accordance with the specification information transmission request A specification information transmission step for sending back the specification information, a step for sending the specification information to the slave unit that has sent back the specification information in the specification information sending step in the base unit, and a specification information sending back in the specification information sending step If the specification information transmitted from the parent device is normally received in the slave device, the response signal transmission step of returning a response signal indicating that the specification information has been normally received; and and the slave device identification information assigning step of transmitting the handset identification information to the slave unit that has returned the response signal in the response signal transmitting step, the master unit smell A step of associating and storing the specification information returned from the slave unit in the specification information transmission step and the slave unit identification information transmitted in the slave unit identification information adding step; A step of adding data to the master unit and exchanging data between the slave unit and the slave unit.

  ADVANTAGE OF THE INVENTION According to this invention, the subunit | mobile_unit which can be communicated by radio | wireless can be automatically detected by control of main | base station initiative, and subunit | mobile_unit identification information can be provided to the detected subunit | mobile_unit. Accordingly, data transmission / reception between the parent device and the plurality of child devices can be easily realized without assigning child device identification information to each child device in advance.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a case where the present invention is applied to a telemeter system will be described as an example of the information processing apparatus according to the present invention.

  FIG. 1 is a block configuration diagram showing an embodiment of a slave unit 10 and a master unit 40 included in the telemeter system according to the present embodiment. In addition, since each subunit | mobile_unit 10 may each be the same structure, only 1 unit | set clearly indicated the block configuration.

  A plurality of sensors 12 are attached to the slave unit 10. The sensor 12 is various sensors such as a temperature sensor, a strain sensor, and a pressure sensor, and obtains desired data by measurement. The sensor 12 connected to one slave unit 10 may be a mixture of different types of sensors, may be composed of the same type of sensor, or may be a single sensor. The slave unit 10 includes a sensor interface (I / F) 14 for connecting the sensor 12, a wireless communication module 18 that performs wireless communication with other devices via the antenna 16, and a serial number for uniquely identifying the slave unit that is assigned at the time of manufacture. And the nonvolatile memory 20 in which the specification information of each connected sensor 12 is stored in advance, the slave unit ID holding unit 22 that holds the slave unit ID for identifying the self-slave unit assigned from the master unit 40, and each of the above An ECU (Electronic Control Unit) 24 that connects the components and executes overall operation control is provided.

  The ECU 24 transmits a response signal in response to a detection request issued from the parent device 40, and a child device ID acquisition portion 28 that acquires child device identification information given from the parent device 40 after the response signal is returned. In response to a transmission request from the base unit 40 after replying the response signal, the specification information transmission unit 30 that returns the specification information, and the transmission / reception of measurement data and the like with the base unit 40 by adding the slave unit ID given from the base unit 40 And a data communication unit 32 that performs the measurement and a measurement unit 34 that collects sensor data using the sensor 12. Details of each processing function will be described later.

  On the other hand, the parent device 40 performs processing such as collecting data measured by the sensor 12 using the child device 10 and sending the collected measurement data to an external device (not shown). The parent device 40 is connected to an external storage device interface (I / F) that connects a wireless communication module 44 that performs wireless communication with the child device 10 via an antenna 42 and a specification information storage device 46 that holds specification information collected from the child device 10. ) 48 and an ECU 50 that performs overall operation control.

  The ECU 50 responds to the detection request transmitted to the child device 10, and the child device ID assigning unit 52 that assigns the child device ID to the child device 10 that first returns the response signal, and the child that has returned the response signal. A specification information collection unit 54 that collects specification information by transmitting a specification information transmission request to the device 10 and a child device 10 that is a data transmission destination by adding a child device ID are specified, and the child device 10 has a data communication unit 56 for exchanging data with 10. The data collection unit 58 collects measurement data collected by each child device 10 using the sensor 12.

  FIG. 2 is a diagram showing an example of the specification information held in the specification information storage device 46 in the present embodiment. In the telemeter system, various types of sensor data measured by the slave unit 10 are collected by the slave unit 10 using the sensor 12 in accordance with the measurement control led by the master unit, but what kind of sensor 12 is attached to each slave unit 10. It is impossible to collect desired measurement data from each slave unit 10 unless the user knows in advance. Therefore, the base unit 40 in the present embodiment collects specification information from each slave unit 10 and stores it in the specification information storage device 46 in the procedure described later. The specification information includes information such as the number and type of each sensor 12 and the type of data collected from each sensor, and is held and managed for each slave unit. According to the specification information illustrated in FIG. 2, it can be seen that one temperature sensor and one flow sensor are connected to the child device 10 whose child device ID is 1. In this embodiment, it is assumed that the specification information storage device 46 is connected to an external information management device connected to the parent device 40, but the parent device is not limited to this connection relationship. The specification information storage device 46 may be provided in the inside 40.

  Although the telemeter system in this Embodiment has the said structure, the example when this telemeter system is arrange | positioned in a vehicle and it utilizes for a tire pressure monitor is shown in FIG.3 and FIG.4. Among these, FIG. 4 shows a schematic cross-sectional view of a wheel including the tire 62 and the wheel 64. In each tire 62, the child device 10 attached to the tip of the wheel 64 is disposed. A sensor attached to the tire valve portion is connected to the slave unit 10 in order to measure the air pressure. The antenna 42 of the parent device 40 is disposed in the vicinity of the wheel 64 where the child device 10 is disposed and at a position where wireless communication with the child device 10 is possible. Although FIG. 1 shows that only one antenna 42 is connected to the parent device 40, a plurality of antennas 42 are connected to correspond to each child device 10 as shown in FIG. It may be configured.

  The telemeter system collects data measured by each sensor 12 at the parent device 40 by executing wireless communication between the child device 10 and the parent device 40. In the present embodiment, a method is adopted in which the child device 10 is specified as the wireless communication destination by using the child device ID, but in this embodiment, each child device 10 has a child device ID. Is not assigned in advance. That is, the base unit 40 in the present embodiment automatically detects the slave unit 10 mounted on the vehicle 60, assigns the slave unit ID to the detected slave unit 10 each time, and thereafter the slave unit 10 Wireless communication is performed with the child device 10 using the ID. From the parent device 40, an automatic detection mode for automatically detecting the child device 10 and assigning a child device ID to the detected child device 10, and a measurement mode for collecting measurement data from the detected child device 10 And work with. On the other hand, from the standpoint of the slave unit 10, the sensor responds to the detection signal transmitted from the master unit 40 by giving a slave unit ID acquisition mode in which the slave unit ID is given, and the sensor according to the instruction from the master unit 40. It operates in a measurement mode in which measured data is transmitted to the parent device 40.

  FIG. 5 is a flowchart showing processing of base unit 40 in the present embodiment, and FIG. 6 is a flowchart showing processing in automatic detection mode among processing performed by base unit 40, that is, processing for detecting handset 10. It is. FIG. 7 is a flowchart showing processing of the slave unit 10 in the present embodiment, and FIG. It is the flowchart which showed the process which has you give. Operations in this embodiment will be described with reference to these flowcharts. In the following description, various data are exchanged in the telemeter system. However, the data format used in the data communication of the telemeter system is defined in advance, and the parent device 40 and each child device 10 are It is assumed that the type of each received data can be determined.

  First, when the parent device 40 is activated, detection of the child device 10 capable of wireless communication is started (step 101). The slave automatic detection process in the master 40 will be described in detail with reference to FIG. Further, the slave unit ID acquisition process in the slave unit 10 corresponding to this process will be described in detail with reference to FIG. At the start of this process, it is assumed that each slave unit 10 is powered on in advance and is waiting for a detection signal sent from the master unit 40 in the slave unit ID acquisition process (step 201) ( Step 221).

  The slave unit ID assigning unit 52 in the master unit 40 broadcasts a detection signal to the slave unit 10 (step 121), and then waits for a response from any one of the slave units 10 (step 122). Broadcast transmission means transmission to an unspecified handset 10. If no response is received from any of the slave units 10 within the predetermined time, the present process is terminated because there is no slave unit 10 for which a slave unit ID is desired to be acquired at present (step 123).

  The slave 10 that has been turned on is in a state of waiting for a detection signal (step 221). When a detection signal is received at this time (step 222), a countdown of a timer counter (not shown) held therein is started. (Step 223). This timer counter is used to determine the response timing for the detection signal. The initial value of the timer counter is a value obtained by calculation based on the serial number of each slave unit 10. Since the serial number is different for each slave unit, the calculation result differs for each slave unit. Therefore, the time required for the count value to become 0 after receiving the detection signal from the base unit 40 and starting the countdown of the timer counter differs depending on the handset 10. For this reason, in Steps 223 to 225, the handset 10 whose initial value of the timer counter is the minimum value first has a count value of zero. Note that the slave unit 10 whose count value is 0 before the other slave units 10 because the initial value of the timer counter is minimum is referred to herein as a “minimum value slave unit” for convenience. When the response signal transmission unit 26 in the minimum value slave unit 10 recognizes that the count value has become 0 (step 225), it broadcasts a response signal to the detection signal at that timing (step 226). At this time, the minimum value slave unit 10 has obtained the right to acquire the slave unit ID from the master unit 40.

  On the other hand, since the slave unit 10 other than the minimum slave unit receives a response signal issued by the minimum slave unit before the count value of its own timer counter reaches 0 in step 224, the slave unit 10 receives the response signal. As a result, it is not possible to obtain the right to acquire the child machine ID that is the object of this process. For this reason, it will return to the reception waiting state of the detection signal which the main | base station 40 will emit after this (step 221).

  The slave unit 10 that has become the minimum value slave unit in the above process transmits a response signal (step 226), and then shifts to a reception waiting state for a specification information transmission request issued by the master unit 40 (step 227). If the specification information transmission request cannot be received within a preset time due to a communication failure or the like caused by noise generation, the acquisition of the slave unit ID is abandoned in the current process as a timeout, As in the case of the slave unit 10, the detection signal reception waiting state is resumed (step 221).

  If the slave unit ID assigning unit 52 in the master unit 40 cannot receive a response signal that any of the slave units 10 will reply within a preset time, the slave unit detection process is terminated as a timeout (step 123). ). When the response signal is received before the timeout, the specification information collection unit 54 is caused to broadcast the specification information transmission request (step 124). Then, a transition is made to a reception waiting state for the specification information that should be returned in response to the specification information transmission request (step 125). It is only the minimum value slave that is waiting in a state that can respond to the specification information transmission request (step 227).

  When the specification information transmission request is received before the timeout, the specification information transmission unit 30 in the minimum value slave unit returns the specification information recorded in the memory 20 to the parent unit 40 in response to the request (step 229). Then, the state shifts to a verify signal waiting state (step 230). If the verify signal cannot be received within the preset time, it is timed out to give up the slave unit ID in the current process and return to the detection signal reception wait state in the same manner as the other slave units 10 ( Step 221).

  If the specification information collection unit 54 in the parent device 40 does not receive the specification information that the minimum value child device should return within a preset time, it terminates the current child device detection process as a timeout (step 126). When the specification information is received before the timeout, the specification information collecting unit 54 is caused to broadcast the received specification information as a verify signal (step 127). Then, base unit 40 shifts to a reception wait state for a response signal that should be returned in response to the verify signal (step 128). Note that it is only the minimum value slave unit that is waiting in a state where it can cope with the verify signal (step 230).

  When the verify signal is received before the time-out, the slave unit ID acquisition unit 28 in the minimum value slave unit notifies the reception status of the verify signal. That is, the slave unit ID acquisition unit 28 returns a response signal indicating “NG” when it cannot be normally received (steps 232 and 234), and enters a reception waiting state for the detection signal in the same manner as the other slave units 10. Return (step 221). When the reception is successful, a response signal indicating “OK” is returned (steps 232 and 233), and then the mobile device ID shifts to a reception waiting state (step 235). If the handset ID cannot be received within a preset time, the handout ID is abandoned in the current process as a time-out and the process returns to the detection signal reception wait state in the same manner as the other handset 10. (Steps 236 and 221).

  If the slave unit ID assigning unit 52 in the master unit 40 does not receive a response signal that the minimum value slave unit should return within a preset time, the slave unit detection process is terminated as a timeout (step 129). . Even when the response signal is received before the time-out, if the content is “NG”, the current slave unit detection process is terminated (step 130). On the other hand, when the content of the received response signal is “OK”, the handset ID assigning unit 52 searches the specification information storage device 46 to select an unused handset ID (step 131). The transmitted slave ID is broadcasted (step 132). Then, parent device 40 shifts to a reception waiting state for an acquisition signal that should be returned in response to transmission of the child device ID (step 133). Note that it is only the minimum value slave unit that is waiting in a state capable of supporting the slave unit ID transmission (step 235).

  When the child device ID is received before the timeout, the child device ID acquisition unit 28 in the minimum value child device stores the received child device ID in the child device ID holding unit 22 (step 237). Then, the child device ID acquisition unit 28 returns an acquisition signal notifying that the child device ID has been acquired to the parent device 40 (step 238).

  If the slave unit ID assigning unit 52 in the master unit 40 does not receive the confirmation signal that the minimum slave unit should return within the preset time, the slave unit detection process is terminated as a timeout (step 134). . However, in this case, since the slave unit ID is already stored in the slave unit 10, it is necessary to take some measures such as resetting the power of the minimum slave unit, displaying a message on the display screen, and notifying the external device of a warning. There is. When the acquisition signal is received before the timeout, the slave unit ID assigning unit 52 associates the slave unit ID selected in step 131 with the specification information received in step 125 and stores it in the specification information storage device 46 (step 135). ).

  In the present embodiment, the slave unit ID can be automatically given to the slave unit 10 by operating as described above. As a result, it is not necessary to pre-allocate the child device ID to the child device 10, so that troublesome and complicated setting work is unnecessary, and the management of the child device ID is simple.

  In the present embodiment, since the same calculation formula using a serial number that is different for each slave unit as a variable is incorporated in the response signal transmission unit 26 of each slave unit 10, the initial value of the timer counter is calculated. The order of the slave units 10 corresponding to the detection signals emitted from the master unit 40 is fixed. However, since the child device 10 that has acquired the child device ID shifts to the measurement mode and does not correspond to a detection signal that is issued by the parent device 40 after the child device ID is acquired as is apparent from FIG. The child device 10 can acquire the child device ID as soon as the parent device 40 repeatedly issues the detection signal. In the present embodiment, in order to vary the response timing to the detection signal for each slave unit, serial numbers having different values for each slave unit are effectively used. However, since the response timing only needs to be different from that of the other slave units 10, for example, other numbers may be used so that this purpose can be achieved. Alternatively, other methods can be used.

  In the present embodiment, as described above, the slave unit ID is assigned after the specification information is acquired. This is because the base unit 40 grasps the specification information in this embodiment, so that it is possible to recognize in advance which type of sensor 12 is connected to each slave unit 10 and quickly collect measurement data. This is because it is one of the features. Of course, the present invention need not be limited to the above procedure, and the parent device 40 may collect the specification information after giving the child device ID.

  As described above, the automatic detection mode of the slave unit 10 in the master unit 40 (automatic acquisition mode of the slave unit ID in the slave unit 10) is executed. Next, the measurement mode will be described.

  The parent device 40 repeatedly executes the above-described child device detection process (step 101) until a measurement instruction or the like is received from an external device. Then, when measurement is started in accordance with the instruction (step 102), the data collection unit 58 refers to the specification information storage device 46 to identify the child device 10 to be measured. In the measurement mode in the present embodiment, in principle, measurement data is collected from all detected child devices 10. Therefore, the data collection unit 58 sequentially sets the slave units 10 to which the slave unit IDs are assigned as measurement targets.

  The data collection unit 58 adds a slave unit ID of the slave unit 10 to be measured and transmits a measurement data transmission request to the slave unit 10 (step 103). Then, the state shifts to a data reception waiting state (step 104). The data collection unit 58 can easily recognize the types of measurement data that can be collected from the measurement target child device 10 by referring to the specification information stored in the specification information storage device 46. For example, if the handset 10 is for tire pressure monitoring, the data collection unit 58 can easily determine that the collected measurement data is air pressure data, so that the collected data can be processed appropriately. It can be carried out.

  When the slave unit 10 that has entered the measurement mode and is waiting for a transmission request (step 202) receives a transmission request addressed to itself from the master unit 40 (step 203), the measuring unit 34 is connected. Sensor data measured by the sensor 12 is collected (step 204) and transmitted to the parent device 40 (step 205).

  When the measurement data is sent, the data collection unit 58 stores it in a predetermined storage device (not shown) (step 106). If the measurement data is not sent within a preset time, a timeout is set (step 105). Subsequently, when there is a slave unit 10 that has not received measurement data, the data collection unit 58 acquires the slave unit ID of the corresponding slave unit 10 from the specification information storage device 46 (step 108), and the procedure described above. In (steps 103 to 106), measurement data is collected from the slave unit 10 and stored. The measurement process is repeatedly executed until an instruction to end the measurement mode is received (step 109). When the end is instructed, the process returns to step 101.

  According to the present embodiment, base unit 40 can collect measurement data as described above. However, in addition to simply collecting measurement data, base unit 40 can also be used for the following information management. .

  FIG. 9 is a diagram showing an example of specification information when the handset 10 is used for tire pressure monitoring as illustrated in FIGS. Although history information such as tire rotation and air pressure change history is shown in FIG. 9, history information for each tire can also be managed in this way. As a result, the master unit can more accurately indicate the tire replacement timing and the air pressure alarm. In addition, the tire pressure monitor may be temporarily replaced by changing the location by tire rotation, changing to a studless tire in winter, etc., so the nonvolatile memory 20 of the slave unit 10 disposed inside the tire or a separate installation is provided. It can also be recorded in a non-volatile memory. In this way, by feeding back the information maintained and managed on the parent device side to the child device side, history information can be managed integrally with the tire even when the tire is removed.

  By the way, once the telemeter system is mounted on a vehicle or the like, it can be normally used without being attached or detached. Therefore, in the present embodiment, it is assumed that the child device ID holding unit 22 is realized by a nonvolatile memory and the child device ID assigned to the child device 10 is continuously used. Further, as described above, the specification information of the child device 10 is not sent to the parent device 40 when the child device ID is given, and is not sent again thereafter. However, it may be exchanged depending on the type and life of the slave unit 10 or the sensor 12 connected to the slave unit 10 or the form of application of the information processing apparatus according to the present invention. You may want to send it. Furthermore, it may not happen that it is desired to reassign the child device ID. In order to cope with such a case, the child device ID holding unit 22 may be realized by a volatile memory, and a child device ID may be assigned each time.

It is a lock block diagram of the subunit | mobile_unit and parent | base_unit included in the telemeter system which is one Embodiment of the information processing apparatus which concerns on this invention. It is the figure which showed the example of the specification information hold | maintained at the specification information storage device in this Embodiment. It is a conceptual diagram when the telemeter system in this Embodiment is applied to a vehicle. It is a schematic sectional drawing of the wheel by which the subunit | mobile_unit was arrange | positioned in FIG. It is the flowchart which showed the process of the main | base station in this Embodiment. It is the flowchart which showed the detail of the subunit | mobile_unit detection process shown in FIG. It is the flowchart which showed the process of the subunit | mobile_unit in this Embodiment. It is the flowchart which showed the detail of the subunit | mobile_unit ID acquisition process shown in FIG. It is the figure which showed the example of the specification information hold | maintained at the specification information storage device when the telemeter system in this Embodiment is applied to a vehicle.

Explanation of symbols

  10 slave units, 12 sensors, 16, 42 antennas, 18, 44 wireless communication modules, 20 memories, 22 slave unit ID holding units, 26 response signal transmission units, 28 slave unit ID acquisition units, 30 specification information transmission units, 32, 56 data communication unit, 34 measuring unit, 40 master unit, 46 specification information storage device, 52 slave unit ID assigning unit, 54 specification information collecting unit, 58 data collecting unit, 60 vehicle, 62 tire, 64 wheel.

Claims (9)

In the slave unit in the information processing apparatus that wirelessly transmits and receives data to and from the master unit having a data collection function,
When receiving a detection request issued from the master unit, the response timing for the detection request is determined based on a number uniquely assigned to the base unit, and the corresponding slave unit issued before the determined response timing elapses. Response information transmitting means for returning response information when response information corresponding to the detection request is not received;
In response to a transmission request from the parent device after reply information is returned, specification information transmission means for returning its own specification information held therein,
A response signal transmitting means for returning a response signal indicating that the specification information has been normally received when the specification information transmitted from the parent device is normally received after the specification information is returned;
The slave unit identification information given from the master unit after the response signal is returned, and the master unit stores the master unit in association with the specification information transmitted by the specification information transmitting unit before exchanging data with the master unit. Slave unit identification information acquisition means for acquiring slave unit identification information from the master unit;
Data communication means for exchanging data with the parent device by adding child device identification information given from the parent device;
A slave unit in an information processing apparatus characterized by comprising: In the subunit | mobile_unit in the information processing apparatus of Claim 1,
Having measuring means for collecting sensor data using connected sensor means;
It is possible to operate in a slave unit identification information acquisition mode based on the operations of the response information transmission unit and the slave unit identification information acquisition unit or in a measurement mode based on the operation of the measurement unit after acquisition of the slave unit identification information. A slave unit in an information processing apparatus. In the master unit in the information processing apparatus that collects data transmitted wirelessly from a plurality of slave units having a data transmission function,
Specification information collecting means for collecting specification information by transmitting a specification information transmission request to the child device that has returned response information first in response to the detection request transmitted to the child device;
Means for transmitting the specification information received when the specification information collecting means collects to the slave unit;
If the response signal from the slave unit to the transmitted specification information indicating that receives the specification information normally sent back, and the child device identification information adding means for transmitting the handset identification information to the handset ,
Before exchanging data with the slave unit, the slave unit identification information transmitted by the slave unit identification information adding unit and the specification information collected by the specification information collection unit are stored in the specification information storage unit in association with each other. Storage means;
Data communication means for exchanging data with the slave unit by adding the slave unit identification information to the data;
A master unit in an information processing apparatus characterized by comprising: In the main | base station in the information processing apparatus of Claim 3,
A master unit in an information processing apparatus, comprising: a data collection unit that collects data of a type specified based on specification information collected by the specification information collection unit from the slave unit.   An information processing apparatus comprising the slave unit according to claim 1 and the master unit according to claim 3.   An information processing apparatus comprising: the slave unit according to claim 2; and the master unit according to claim 4. The information processing apparatus according to claim 5 or 6,
The master unit and the slave unit are mounted on a vehicle,
The slave unit includes a measurement unit that measures a state quantity of the vehicle, adds the slave unit identification information given to the slave unit to the measured vehicle state quantity, and transmits the slave unit identification information to the master unit. Information processing apparatus. The information processing apparatus according to claim 7,
The slave unit is disposed on a wheel,
The information processing apparatus according to claim 1, wherein the parent device includes antenna means disposed near a wheel where the child device is disposed and at a position where wireless communication with the child device is possible. In a method of automatically assigning slave unit identification information in an information processing apparatus having a plurality of slave units having a data transmission function and a master unit having a data collection function and transmitting and receiving data to and from each other wirelessly,
In the master unit, a detection request step for transmitting a detection request to the slave unit;
When each of the slave units receives the detection request transmitted by the detection request step, the response timing for the detection request is determined based on the number uniquely assigned to the slave unit, and before the determined response timing elapses A response information transmission step of returning response information when response information corresponding to the detection request issued by the slave unit is not received;
In the master unit, a transmission request transmission step of transmitting a specification information transmission request to the slave unit that has returned response information;
In each of the slave units, when receiving the specification information transmission request transmitted by the transmission request transmission step, a specification information transmission step of returning its own specification information held in response to the specification information transmission request;
In the master unit, transmitting the specification information to the slave unit that has returned the specification information in the specification information transmission step;
In the slave unit that has returned the specification information in the specification information transmission step, when the specification information transmitted from the master unit is normally received, a response signal that returns a response signal indicating that the specification information has been normally received Sending step;
In the master unit, a slave unit identification information providing step for transmitting slave unit identification information to the slave unit that has returned a response signal in the response signal transmission step;
In the master unit, the specification information returned from the slave unit in the specification information transmission step and the slave unit identification information transmitted in the slave unit identification information giving step are stored in association with each other;
Adding child unit identification information to data and exchanging data between the parent unit and the child unit;
A method for automatically assigning handset identification information in an information processing apparatus, comprising:

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