JP2009177292A - Radio communication system and biological information measuring system using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication system capable of reducing the frequency of performing battery exchange and battery charging of a master unit, and to provide a biological information measuring system using the same. <P>SOLUTION: The master unit 1 includes a master unit transmission data generation part 4 for generating transmission data to a slave unit 10 including the information of a driving power source obtained from a driving power source determination part 2 for determining the driving power source in the transmission data, and a transmission time change part 8 for changing the transmission time on the basis of a reception cycle obtained from a reception cycle extraction part 7 for extracting the cycle of the reception operation of the slave unit from received data. The slave unit 10 includes a reception cycle change part 14 for changing the cycle of the reception operation of the slave unit on the basis of the driving power source information obtained from a driving power source extraction part 13 for extracting the driving power source of the master unit from the information of the driving power source transmitted from the master unit 1, and a slave unit transmission data generation part 15 for generating the transmission data to the master unit 1 including the information of the changed reception cycle in the transmission data. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a biological information measurement system, and more particularly to a technique for wirelessly communicating measured data by intermittent transmission / reception.

  In recent years, white appliances such as air conditioners and refrigerators, security devices such as intrusion sensors, and home controllers installed in the home are connected wirelessly and connected to a mobile phone via the home controller. In-home network systems have been developed that control devices such as air conditioners and notify security information in the home to people on the go via mobile phones.

In this home network system, when a plurality of slave units constituting a network and a home controller that is a master unit communicate with each other, the master unit assigns a device identification code to each slave unit, By storing intermittent reception cycle information, a system is disclosed in which a parent device can transmit a radio wave having a length corresponding to the intermittent reception cycle of each child device (see, for example, Patent Document 1).
JP 2004-201075 A

  However, in the conventional configuration, when the master unit is operating with a driving power source that requires replacement or charging, such as a battery or a battery, the master unit consumes a lot of power because it communicates with a plurality of slave units. There was a problem that it was necessary to frequently replace the battery as a driving power source and to charge the battery.

  The present invention solves the above-described conventional problems, and provides a radio communication system and a biological information measurement system using the same that reduce the frequency of battery replacement and battery charging of the master unit in communication between the master unit and the slave unit. The purpose is to provide.

  In order to solve the above-described conventional problems, a wireless communication system according to the present invention includes a parent device that repeatedly transmits the same data within a single transmission time, and a child that repeatedly performs a reception operation at a predetermined reception time at a constant period. In the wireless communication system constituted by the machine, the master unit includes a drive power source determination unit that determines a drive power source, and information on the drive power source obtained from the drive power source determination unit is included in transmission data and is transmitted to the slave unit A base unit transmission data generation unit for generating data; a base unit transmission / reception unit for transmitting / receiving data to / from the slave unit; a reception cycle extraction unit for extracting a period of a reception operation of the slave unit from data received from the slave unit; A transmission time changing unit that changes the transmission time based on the reception cycle obtained from the reception cycle extraction unit, wherein the slave unit is driven by the drive power source of the master unit based on the drive power source information transmitted from the master unit Extract A dynamic power source extraction unit, a reception cycle change unit that changes the cycle of the reception operation of the slave unit based on the drive power source information obtained from the drive power source extraction unit, and information on the reception cycle changed by the reception cycle change unit Is included in the transmission data, and includes a slave unit transmission data generation unit that generates transmission data to the master unit, and a slave unit transmission / reception unit that performs data transmission and reception with the master unit.

  In the wireless communication system, when the slave unit determines that the master unit is driven by a drive power source that requires replacement or charging in the drive power source extraction unit, Shortening the period of the reception operation, the master unit identifies that the reception period of the slave unit has become shorter than the reception period extraction unit, and the transmission time changing unit shortens the transmission time. It is a feature.

  Furthermore, in the wireless communication system, when the slave unit determines in the drive power source extraction unit that the master unit is driven by a drive power source that does not require replacement or charging, in the reception cycle change unit Increasing the period of the reception operation, the base unit identifies that the reception period of the slave unit has become longer than the reception period extraction unit, the transmission time changing unit to increase the transmission time It is a feature.

  Furthermore, a biological information measuring system including a wireless communication system, wherein the parent device includes a biological information measuring unit that measures biological information, and transmits the biological information to the child device. is there.

  According to the wireless communication system and the biological information measurement system using the wireless communication system of the present invention, the power consumption of the master unit is reduced by changing the intermittent reception cycle of the slave unit in consideration of the drive power source of the master unit. The frequency of battery replacement and battery charging of the master unit can be reduced.

  Embodiments of a wireless communication system and a biological information measurement system using the same according to the present invention will be described below in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a configuration diagram of a radio communication system according to the first embodiment of the present invention.

  In the base unit 1, the drive power source determination unit 2 checks the power source 3 and determines the type of the drive power source connected to the power source 3. The drive power information, which is the determination result, is output to the parent device transmission data generation unit 4, and the parent device transmission data generation unit 4 generates transmission data including the drive power information. The generated transmission data is converted into an analog signal by the base transceiver unit 5 and transmitted from the antenna 6 toward the handset 10. Further, as a response to the transmitted signal, a response signal from the slave unit 10 is received from the antenna 6. The received response signal is binarized by the base transceiver unit 5 and converted into a digital signal. The generated digital signal includes a data signal portion and a header signal portion for identifying the head portion of the data signal portion.

  The reception cycle extraction unit 7 decodes the data signal portion of the digital signal output from the parent device transmission / reception unit 5 and converts it into data. The converted data includes the reception cycle information of the slave unit 10, and the data is extracted and output to the transmission time changing unit 8. The transmission time changing unit 8 changes the transmission continuation time in one transmission based on the reception cycle information output from the reception cycle extraction unit 7 and outputs information on the transmission continuation time to the base transceiver unit 5. The base transceiver unit 5 holds the transmission duration information output from the transmission time changing unit 8 and determines the transmission duration during data transmission based on the information.

  The power source 3 is configured to be able to connect two power sources, and an AC power source and a primary battery or a secondary battery (hereinafter referred to as a storage battery) can be mainly connected. When the AC power supply is connected, the battery is driven by the AC power supply. The drive power supply determination part 2 can determine whether it is driven by AC power supply or a storage battery by monitoring each connection line of AC power supply and a storage battery.

  Moreover, the subunit | mobile_unit 10 performs intermittent reception with a fixed period, and waits for the signal transmitted from the main | base station 1. FIG. The transmitted signal is received by the antenna 11, and the analog signal received by the slave transmission / reception unit 12 is binarized and converted into a digital signal. The generated digital signal includes a data signal part and a header signal part as well as a response signal received by the base unit 1, and outputs the signal to the drive power supply extraction part 13.

  The drive power supply extraction unit 13 decodes the data signal part of the digital signal output from the slave unit transmission / reception unit 12 and converts it into data. The converted data includes the drive power supply information of the base unit 1, and the data is extracted and output to the reception cycle changing unit 14. The reception cycle changing unit 14 changes the reception cycle of the intermittent reception of the slave unit 10 based on the drive power source information output from the drive power source extraction unit 13, and the changed reception cycle information is transmitted to the slave unit transmission data generation unit 15. The data is output to the slave transmission / reception unit 12.

  The slave unit transmission data generation unit 15 uses the reception cycle information acquired from the reception cycle change unit 14 to generate transmission data including the reception cycle information and outputs the transmission data to the slave unit transmission / reception unit 12. The subunit | mobile_unit transmission / reception part 12 changes a receiving period based on the information of the receiving period acquired from the receiving period change part 14. FIG. Further, an analog signal is generated from the transmission data acquired from the slave unit transmission data generation unit 15, and the generated analog signal is transmitted from the antenna 6 toward the base unit 1.

  FIG. 2 is a diagram illustrating a data structure transmitted from the parent device 1 to the child device 10 in the wireless communication system according to the first embodiment of the present invention.

  The data structure transmitted from the base unit 1 includes drive power data storing drive power information generated by the drive power determination unit 2 as shown in FIG. When receiving the data, the slave unit 10 is converted from an analog signal to a digital signal by the slave unit transmission / reception unit 12 and output to the drive power source extraction unit 13. The drive power source extraction unit 13 checks the signal of the part corresponding to the header, and if the pattern is a specific pattern, recognizes the data after the header as data and decodes the data after the header. The error detection data in the decoded data is used to check whether there is an error in the decoded data. If there is no error, the received data is accepted. The received data includes the drive power data of the base unit 1 and the drive power information is extracted from the drive power data.

  FIG. 3 is a diagram illustrating a data structure transmitted from the slave unit to the master unit in the wireless communication system according to the first embodiment of the present invention.

  The data structure transmitted from the child device 10 includes reception cycle data as shown in FIG. When receiving this data, the base unit 1 converts the analog signal into a digital signal by the base unit transmission / reception unit 5 and outputs it to the reception cycle extraction unit 7. The reception cycle extraction unit 7 checks the signal corresponding to the header, and if it is a specific pattern, recognizes the data after the header as data and decodes the data after the header. The error detection data in the decoded data is used to check whether there is an error in the decoded data. If there is no error, the received data is accepted. The reception data includes the reception cycle data of the slave unit 10, and the reception cycle information is extracted from the reception cycle data.

  FIG. 4 shows a flowchart at the time of wireless communication between the parent device 1 and the child device 10 of the wireless communication system in the first embodiment of the present invention.

  In FIG. 4, when the base unit 1 detects a change in the drive power supply in the drive power supply monitoring state (S1), the drive power supply determination unit 2 determines the drive power supply (S2), and generates transmission data including the drive power supply information (S3) and transmit to the child device 10. The slave unit 10 is waiting to receive data from the master unit 1 in the intermittent reception state (S7). When data including drive power supply information is received, the drive power supply information of the data is extracted (S8), and the drive power supply is extracted. The reception cycle of the slave unit 10 is changed according to the information (S9), and transmission data including the changed reception cycle information is generated (S10).

  The generated transmission data is transmitted to the base unit 1 and received when the base unit 1 is in a response waiting state (S4). The received data includes information on the reception cycle of the slave unit 10. Information on the reception cycle is extracted (S <b> 5), and is transmitted from the base unit 1 at a time according to the information on the reception cycle. The transmission duration is changed (S6). When these communication processes are completed, subsequent communication is transmitted and received at the changed communication timing.

  FIG. 5 shows a time chart regarding transmission / reception timing change between the master unit 1 and the slave unit 10 when the drive power source of the master unit 1 is changed from an AC power source to a storage battery.

  A (dotted line) shown in FIG. 5 is a timing when the parent device 1 is changed from an AC power supply to a storage battery. When the drive power supply of the base unit 1 is changed, the drive power supply is determined (S2 in FIG. 4), transmission data including drive power supply information is generated (S3 in FIG. 4), and during the transmission duration T1, Transmit continuously (transmission data group 20). The transmission continuation time T1 is the transmission continuation time of the base unit 1 when the AC power source is used. In FIG. 5, the second transmission data 21 in the transmission continuation time T1 is received at the reception time T3 of the slave unit 10. Drive power supply information is extracted from the transmission data 21 received by the slave unit 10 (S8 in FIG. 4), and it is recognized that the drive power supply is a storage battery.

  The subunit | mobile_unit 10 changed the receiving period from the receiving period T4 corresponding when the main | base station 1 is driven with AC power supply to the receiving period T5 corresponding when driving with a storage battery (S9 of FIG. 4), and changed it. Transmission data 22 including the reception cycle information is generated (S10 in FIG. 4) and transmitted to the parent device 1. Master unit 1 receives transmission data 22 including reception cycle information transmitted from slave unit 10 in response waiting state T2 (S4 in FIG. 4) from slave unit 10. From the transmission data 22 including the slave unit reception cycle information received by the master unit 1, the reception cycle of the slave unit 10 is extracted (S5 in FIG. 4), and the transmission duration T3 when the storage battery is used is changed from the transmission duration T1. Change (S6 in FIG. 4).

  When these processes are completed, data transmitted from the base unit 1 thereafter is continuously transmitted for the transmission duration time T3. In FIG. 5, since the transmission duration T3 is half of the transmission duration T1, the continuous transmission data is 6 times in the transmission duration T1 at the time of AC power supply, but the continuous transmission data is transmitted at the transmission duration T3 at the time of storage battery. Data will be 3 times.

  Moreover, the subunit | mobile_unit 10 shortens a receiving period by changing from the receiving period T4 corresponding to the transmission continuation time T1 of the main | base station 1 to the receiving period T5 corresponding to the transmission continuation time T3.

  Further, when the driving power source of the base unit 1 is changed from the storage battery to the AC power source, the same processing as described above is performed, and the transmission duration time of the base unit 1 is changed from T3 to T1, and the reception cycle of the slave unit 10 Is changed from T5 to T4.

  FIG. 6 shows a configuration diagram of a biological information measuring system using the above wireless communication system. The difference from the wireless communication system shown in FIG. 1 is that the base unit 1 includes a biological information measuring unit 30.

  The biological information measuring unit 30 measures a current value obtained from an electrode provided in a biosensor capable of measuring biological information, and calculates biological information using a predetermined conversion table based on the value. To do. For example, the biosensor is a blood glucose level sensor, blood is spotted on the sensor, the current value of the electrode is measured, and the blood glucose level is measured. Based on the calculated biometric information, the base unit transmission data generating unit 4 can generate transmission data including the biometric information, and the base unit transmitting / receiving unit 5 can transmit the data including the biometric information to the slave unit 10.

  Note that the biological information measuring unit 30 is not limited to blood glucose measurement, and may measure other biological information.

  As described above, in the first embodiment, by considering the drive power supply of the master unit and changing the intermittent reception cycle of the slave unit, the transmission duration time of the master unit can be shortened and the power consumption can be reduced. Therefore, it is possible to reduce the frequency of battery replacement and battery charging of the master unit.

  The wireless communication system and the biological information measurement system using the wireless communication system according to the present invention can reduce the frequency of battery replacement and battery charging of the parent device, and can change the drive power source, such as communication devices and medical measuring instruments. Useful for.

Configuration diagram of radio communication system according to Embodiment 1 of the present invention The figure which shows the data structure transmitted to the subunit | mobile_unit from the main | base station of the radio | wireless communications system in Embodiment 1 of this invention. The figure which shows the data structure transmitted to the main | base station from the subunit | mobile_unit of the radio | wireless communications system in Embodiment 1 of this invention. The flowchart at the time of radio | wireless communication of the main | base station of the radio | wireless communications system in Embodiment 1 of this invention, and a subunit | mobile_unit Time chart relating to transmission / reception timing change between the master unit and the slave unit when the drive power source of the master unit in the first embodiment of the present invention is changed from an AC power source to a storage battery Configuration diagram of biological information measurement system in Embodiment 1 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parent | base station 2 Drive power supply determination part 3 Power supply 4 Parent | base station transmission data generation part 5 Parent | base station transmission / reception part 6 Antenna 7 Reception period extraction part 8 Transmission time change part 10 Slave unit 11 Antenna 12 Reception cycle changing unit 15 Slave unit transmission data generating unit 20 Transmission data group including driving power source 21 Transmission data including driving power source information 22 Transmission data including receiving cycle information 30 Biological information measuring unit

Claims (4)

With the base unit that repeatedly transmits the same data within one transmission time,
In a wireless communication system composed of slave units that repeatedly perform a reception operation at a predetermined reception time at a constant period,
The base unit is
A driving power source determination unit for determining the driving power source;
A parent device transmission data generation unit that generates transmission data to a child device by including information on the driving power source obtained from the driving power source determination unit in transmission data;
A parent device transmission / reception unit for transmitting / receiving data to / from the child device;
A reception cycle extraction unit that extracts a cycle of the reception operation of the slave unit from the data received from the slave unit;
A transmission time changing unit that changes the transmission time based on the reception cycle obtained from the reception cycle extraction unit;
The slave is
A drive power extraction unit that extracts the drive power of the master from the information of the drive power transmitted from the master;
A reception cycle changing unit that changes the cycle of the reception operation of the slave unit based on the drive power source information obtained from the drive power source extraction unit;
A slave unit transmission data generation unit for generating transmission data to a master unit by including information on the reception cycle changed by the reception cycle change unit in transmission data;
A wireless communication system including a slave transmission / reception unit that performs data transmission / reception with the master. The slave is
When the drive power source extraction unit determines that the master unit is driven by a drive power source that requires replacement or charging,
Shorten the period of the reception operation in the reception period changing unit,
The base unit is
The wireless communication system according to claim 1, wherein the reception cycle extraction unit identifies that the reception cycle of the slave unit has become shorter, and the transmission time change unit shortens the transmission time. The slave is
When it is determined in the drive power source extraction unit that the master unit is driven by a drive power source that does not require replacement or charging,
Increasing the period of the reception operation in the reception period changing unit,
The base unit is
The wireless communication system according to claim 1, wherein the reception cycle extraction unit identifies that the reception cycle of the slave unit has become longer, and the transmission time change unit increases the transmission time. A biological information measuring system comprising the wireless communication system according to claim 1,
The master unit includes a biological information measuring unit that measures biological information,
A biological information measurement system that transmits the biological information to the slave unit.

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