TWI692271B - Slave device and connection establishment method - Google Patents

Abstract

In the case of data communication between machines by wireless, both the connection destination can be determined and the security can be ensured, and the convenience of the user will not be compromised. A slave device 100 is formed, which includes: a wireless communication module 120 for wireless communication with a main device; an information generating means 110a that converts a part of the address information inherent to the wireless communication module 120 into a digital string After that, the specified number of digits of the digital string is extracted as connection information; and the information output means 110b, which outputs the connection information in order to establish the connection status with the main device.

Description

Slave device and connection establishment method

The present invention relates to a slave device that performs wireless communication with a master device and a connection establishment method for wireless communication between the master device and the slave device.

In a health care device such as a sphygmomanometer, it has a communication function corresponding to Bluetooth (registered trademark). As long as it is such a health care device, data such as the measured blood pressure value can be transmitted to an information processing device such as a smartphone or a personal computer, and managed using this information processing device (for example, refer to Patent Document 1).

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2014-216723

In recent years, Bluetooth Low Energy (hereinafter referred to as "BLE") is known as a specification for power-saving wireless communication between devices. However, regarding the connection of BLE, you can connect without pairing. Therefore, if you want to carry the communication function based on BLE on the health care machine to communicate with the information processing device News, it is worried that the following problems may occur.

In the case where data is transferred from a health care machine corresponding to BLE to an information processing device, if an application is established on the information processing device side and the health care machine side is set to the state of the communication connection mode, the connection can be completed between the devices. Start data transfer. Therefore, for example, if there are plural health care machines in the communicable range, any of these health care machines will be connected to the information processing device, but it is impossible to determine which health care machine is connected to. Knowing that this may cause problems with unsure of connected health care machines. In addition, accompanying this, there is a concern that the security when connected to the information processing device cannot be ensured.

In this regard, for example, it may be considered to construct a high-level security function for an application program operating on an information processing device. However, if you want to build a high degree of security, it will lead to a long-term development period of the application, or an increase in the processing load of the information processing device when the application is created, so this approach may not be practical.

In addition, in order to be able to determine the connection destination and ensure security without relying on high-level security functions, for example, it may be considered that each time the connection is established, it is necessary to enter any connection key information. However, for example, if the machine's inherent manufacturing serial number or communication address information is directly used as the connection key information, the information is generally composed of a multi-digit alphanumeric string, so it may cost too much to input The time and effort are detrimental to the user's convenience.

The purpose of the present invention is to provide a slave device and a connection establishment method, in the case of data communication between machines by wireless, both the connection destination can be determined and the security can be ensured, and the convenience of the user will not be compromised .

The present invention is proposed to achieve the above object.

The first aspect of the present invention relates to a slave device, which is characterized by including: a wireless communication module for wireless communication with a main device; and an information generating means for address information inherent in the wireless communication module After a part is converted into a digital string, the specified number of digits of the digital string is retrieved as connection information; and an information output means that outputs the connection information in order to establish the connection status with the main device. The second aspect of the present invention is the invention described in the first aspect, characterized in that the wireless communication module performs wireless communication according to the low power consumption Bluetooth specification. The third aspect of the present invention is the invention described in the first or second aspect, wherein the slave device is a health care device. The fourth aspect of the present invention relates to a connection establishment method for establishing wireless connection between a master device and a slave device to establish a connection state between the master device and the slave device, characterized in that: After converting a part of the address information inherent in the wireless communication module mounted on the slave device into a digital string, extract the specified number of digits of the digital string as connection information, and use the connection information to establish the master device and the slave The connection status of the device.

According to the present invention, in the case of wireless communication between the master device and the slave device, the connection destination can be determined and the security can be ensured without compromising the user's convenience.

100‧‧‧Sphygmomanometer (slave device)

101‧‧‧Body

102‧‧‧Connector

103‧‧‧Pump

104‧‧‧ECV

105‧‧‧ battery

106‧‧‧DC socket & switch

107‧‧‧AC adapter

110‧‧‧Main microcomputer

110a‧‧‧Information generation means

110b‧‧‧Information output means

111‧‧‧Oscillator

112‧‧‧ First driver

113‧‧‧ Second drive

114‧‧‧ Regulator

115‧‧‧pressure sensor

116‧‧‧LCD

117‧‧‧ touch switch (BT key)

120‧‧‧BT microcomputer

121‧‧‧BT mark

122‧‧‧ Connection Information

200‧‧‧Smartphone (main device)

201‧‧‧Touch panel

202‧‧‧Special icon

203‧‧‧Reception start icon

204‧‧‧Digital string input window

205‧‧‧Information

FIG. 1 is an explanatory diagram showing a specific example of a master-slave system to which the present invention is applied.

2 is a block diagram showing a schematic configuration example of a sphygmomanometer functioning as a slave device of the present invention.

3 is a flowchart showing a specific example of the sequence of the connection establishment method of the present invention.

4 is an explanatory diagram (Part 1) showing a specific example of the state of the slave device in one step of the connection establishment method of the present invention.

5 is an explanatory diagram (Part 2) showing a specific example of the state of the slave device in one step of the connection establishment method of the present invention.

FIG. 6 is an explanatory diagram (Part 1) showing a specific example of the screen display on the main device in one step of the connection establishment method of the present invention.

7 is an explanatory diagram (Part 2) showing a specific example of the screen display on the main device in one step of the connection establishment method of the present invention.

FIG. 8 is an explanatory diagram (Part 3) showing a specific example of the screen display on the main device in one step of the connection establishment method of the present invention.

9 is an explanatory diagram (Part 3) showing a specific example of the state of the slave device in one step of the connection establishment method of the present invention.

10 is an explanatory diagram showing a specific example of the screen display on the main device in the step of the connection establishment method of the present invention (Part 4).

Hereinafter, the slave device and the connection establishment method of the present invention will be described with reference to the drawings.

In this embodiment, the description will be made by item in the following order.

1. Summary of master-slave system 2. Composition example of sphygmomanometer 3. Order of connection establishment method 4. The effect of this embodiment 5. Variation <1. Overview of master-slave system>

In this embodiment, first, the outline of the master-slave system to which the present invention is applied will be described.

The master-slave system is a system that performs wireless communication between the master device and the slave devices. In the master-slave system, at least one of the machines in a group is the master device, and the others are slave devices, and operate under the control of the master device.

FIG. 1 is an explanatory diagram showing a specific example of a master-slave system to which the present invention is applied. The illustrated master-slave system is configured to perform wireless communication according to BLE specifications between the slave device 100 and the master device 200.

Examples of the slave device 100 include health care equipment. The health care machine is used to measure the biological data of the subject (such as the human body). Specifically, examples of the health care device include a sphygmomanometer that measures the blood pressure value of the human body, a pulse meter that measures the pulse rate of the human body, an activity meter that measures the number of steps of the human body, and calculates calories consumed. In the master-slave system, any of these health care devices may be considered as the slave device 100, but it is not necessarily limited to this, and other information processing devices may also be used as the slave device 100. In the present embodiment, the case where the slave device 100 is a sphygmomanometer will be exemplified and the following description will be given.

As the main device 200, for example, a portable information processing terminal device such as a smartphone or a tablet terminal can be cited. That is, as the main device 200, an information processing terminal device having a function as a so-called computer device is used to enable operation of an application program described later. However, it does not have to be a portable type, and a desktop or notebook type personal computer device can also be used. Furthermore, in this embodiment, the main The case where the device 200 is a smart phone is taken as an example for the following description.

<2. Configuration example of sphygmomanometer>

Next, a sphygmomanometer that functions as a slave device will be described in detail. 2 is a block diagram showing an example of a schematic configuration of a sphygmomanometer that functions as a slave device of the present invention. The sphygmomanometer 100 in the illustrated example includes, in addition to the device body 101, a sheath (not shown) attached to the measurement site of the subject who measures blood pressure.

A pump 103 that sends air into the sheath and an ECV (Electrical Control Valve) 104 that finely adjusts and exhausts the air in the sheath are connected to the device body 101 via the connector 102. In addition, a battery 105 is connected to the device body 101 via the connector 102, and an AC adapter 107 is connected via the DC outlet & switch 106. Accordingly, in a state where the AC adapter 107 is connected to the device body 101, power is supplied from the AC adapter 107, and conversely, power is supplied from the battery 105.

In addition, a main microcomputer 110 as a control unit that controls the overall operation of the sphygmomanometer 100 is provided on the device body 101. The main microcomputer 110 is equipped with an information processing function that executes a prescribed program, or a memory function that performs information storage as needed (that is, a function as a computer device). In addition, the device body 101 is provided with an oscillator 111 that oscillates a clock signal for operating the main microcomputer 110, and a first driver 112 that controls the voltage applied to the pump 103 according to a control instruction from the main microcomputer 110. , While controlling the second driver 113 applying voltage to the ECV 104 according to the control instruction from the main microcomputer 110, the regulator 114 which converts the voltage from the AC adapter 107 or the battery 105 and supplies it to the main microcomputer 110, etc., and Pressure sensing including semiconductor sensor for monitoring pressure and pulse in sheath 器115. With these configurations, the sphygmomanometer 100 can measure the blood pressure value of the subject. In addition, the detailed content of blood pressure measurement is well-known, and the description is omitted here.

In addition, the device body 101 is provided with an LCD (Liquid Crystal Display) 116 that is a display for outputting information to the subject, and a tact switch 117 including a key switch for the subject to operate. With such a configuration, the subject (that is, the operator of the sphygmomanometer 100) can cause the sphygmomanometer 100 to perform a desired operation, or can recognize the state of the sphygmomanometer 100 or the measurement result.

In addition, the device body 101 is provided with a BT microcomputer 120, which is a wireless communication module for wireless communication with the main device, that is, the smartphone 200. With the BT microcomputer 120, wireless communication in accordance with BLE specifications is performed.

The inherent address information of the BT microcomputer 120 is supplied to the BT microcomputer 120 in advance. The address information in BLE has a fixed value which is a public address and a variable value which is a random address. Here, the public address is referred to as the inherent address information of the BT microcomputer 120. As the address information inherent to the BT microcomputer 120, for example, an alphanumeric string containing a specified number of hexadecimal digits (for example, twelve digits) is used.

This type of BT microcomputer 120 performs wireless communication with the smartphone 200 while controlling the motion of the main microcomputer 110. The main microcomputer 110 performs operation control of the BT microcomputer 120 based on a predetermined program set in advance. This operation control includes operation control useful for establishing the connection state of the BT microcomputer 120 and the smartphone 200. In order to perform the above-mentioned operation control, the main microcomputer 110 functions as an information generating means 110a and an information output means 110b by executing a prescribed program.

The information generating means 110a is based on the address information inherent in the BT microcomputer 120, and is used to generate new information, that is, the function of connecting information. Specifically, the information generating means 110a is based on the hexadecimal specified position information inherent to the BT microcomputer 120 After a part of the number (for example, twelve digits) is converted into a decimal number string, the specified number of digits in the number string is extracted as connection information.

The information output means 110b is a function for outputting the connection information generated by the information generating means 110a in order to establish the connection status with the smartphone 200. Specifically, the information output means 110b is configured to provide a control instruction to the LCD 116 so that the LCD 116 displays the connection information generated by the output information generation means 110a. In addition, the information output means 110b is configured to provide a control instruction to the BT microcomputer 120 so that the BT microcomputer 120 transmits the connection information generated by the output information generation means 110a.

<3. Sequence of connection establishment method>

Next, the procedure for establishing the connection state with the smartphone 200 using the sphygmomanometer 100 configured as described above, that is, the procedure for the connection establishment method of the present invention will be described.

3 is a flowchart showing a specific example of the sequence of the connection establishment method of the present invention. 4, 5 and 9 are explanatory diagrams showing specific examples of the state of the sphygmomanometer 100 in one step of the connection establishment method of FIG. 3. 6, 7, 8 and 10 are explanatory diagrams showing a specific example of the screen display on the smartphone 200 in one step of the connection establishment method of FIG. 3.

As shown in FIG. 3, in order to establish the connection state of the sphygmomanometer 100 and the smartphone 200, it is necessary to carry out the processing of the sphygmomanometer 100 on the slave device side (steps 101 to 112, hereinafter referred to as the step "S"), and Processing on the smartphone 200 on the main device side (S201~217).

On the side of the sphygmomanometer 100, first, as shown in FIG. 4, the operator of the sphygmomanometer 100 long presses a predetermined touch switch (hereinafter referred to as "BT key") 117 (FIG. 3: S101). With this, the sphygmomanometer 100 shifts to a mode for performing a communication function according to BLE (hereinafter referred to as "BLE mode"). Furthermore, the BT key 117 can also be used for other functions. In this case, in order to distinguish it from the other functions, although a long press is required, as long as it is not shared with other functions, a long press is not necessary.

If the BT key 117 is pressed for a long time, as shown in FIG. 5, the sphygmomanometer 100 will flash the specified BT mark 121 on the LCD 116 (FIG. 3: S102) to inform the operator that it has moved to the BLE mode. In addition, the sphygmomanometer 100 displays the connection information 122 on the LCD 116 (FIG. 3: S102). The connection information 122 is composed of, for example, a 4-digit digital string (refer to “※※※※” in FIG. 5), and is generated by the information generating means 110a of the main microcomputer 110 in the following manner.

The information generating means 110a of the main microcomputer 110 reads the address information from the BT microcomputer 120 when generating the connection information 122. The address information consists of hexadecimal, for example, a 12-digit alphanumeric string. The information generating means 110a, by processing, generating, or extracting based on this alphanumeric string, for the alphanumeric digits that constitute a part of the alphanumeric string (hereinafter referred to as the "first predetermined digits") String, convert the part of the alphanumeric string to a decimal number string. Instead of converting all alphanumeric strings that make up the address information, but converting a portion of this alphanumeric string to a decimal, it is to ensure the necessary security and reduce the processing load (the memory capacity required for processing) Reduction, etc.). Then, if the information generating means 110a performs conversion to a decimal digit string, the digit string of the specified number of digits of the digit string (hereinafter referred to as the "second specified digit") is extracted, and the extracted digit string As the connection information 122. The first specified number of digits and the second specified number of digits may be as long as they are set in advance, and there are no restrictions on the number of digits and positions (lower digits or upper digits, etc.). In addition, both the first specified number of digits and the second specified number of digits can be considered as a complex number of digits, each of which can be the same number of digits The number of digits is different from each other.

In this way, the connection information 122 is finally composed of a digital string with a second specified number of digits (for example, four digits), so in addition to reducing the processing load (reduction of memory capacity required for processing, etc.), it can also be used for the sphygmomanometer 100 The LCD116 can also fully display the amount of information output. In addition, as will be described later, in the case where the connection information 122 is input on the smartphone 200 side, the operation of the operator who performs this input can be expected to be simplified. Moreover, because it is based on the address information inherent in the BT microcomputer 120, it is very necessary to ensure security. In addition, there is no need for complicated management operations such as the case of providing the device with unique identification information of the sphygmomanometer 100 for management. .

Furthermore, the connection information 122 generated by the information generating means 110a of the main microcomputer 110 is displayed and output by the LCD 116 through the information output means 110b of the main microcomputer 110, and is put into the packet when transferring to the BLE mode and It is sent out from the BT microcomputer 120 to the outside. In addition, the connection information 122 can be generated each time it is transferred to the BLE mode, but the memory function of the main microcomputer 110 can also be pre-stored to retain the temporarily generated information, and the self-memory can be used when the next mode is transferred The reader in the function.

On the other hand, on the smartphone 200 side, first, as shown in FIG. 6, the operator of the smartphone 200 taps the dedicated icon 202 displayed on the touch panel 201 of the smartphone 200 to start the application (below , Referred to as "application software") (Figure 3: S201). The activated application software is used by the smartphone 200 to realize the function connected with the sphygmomanometer 100, which is pre-installed in the smartphone 200.

If the application software starts, as shown in FIG. 7, the touch panel 201 of the smartphone 200 outputs a display screen with a reception start icon 203 and a numeric string input window 204. If the reception start icon 203 on this display screen is tapped (Figure 3: S202), Then, in the smart phone 200, it is judged whether the activated application software has a certified performance (Figure 3: S203). The authentication performance refers to the past in which connection information 122 has been input to the digital string input window 204 and the connection status has been established. The existence of such authentication results can be judged by retrieving the memory information in the memory of the smartphone 200 (whether there is memory to keep the connection information 122 input).

If there is no authentication performance, the application software activated in the smartphone 200 enables the operator of the smartphone 200 to input the connection information 122 toward the digital string input window 204 (FIG. 3: S204). The input of the connection information 122 can be performed by using the information input function on the touch panel 201 of the smartphone 200. In this case, it is sufficient to input a second predetermined number of digits (for example, four digits) in the numeric string input window 204 (refer to "※※※※" in FIG. 7) as the connection information 122. The comparison of the address information is not used for this input. Therefore, the operator of the smartphone 200 is excellent in convenience.

If there is an authentication record or the connection information 122 is input in the digital string input window 204, the application software started in the smartphone 200 retrieves the slave device to be connected (FIG. 3: S205). At this time, the touch panel 201 of the smart phone 200 outputs a display screen as shown in FIG. 8. The slave device as the connection target is the sphygmomanometer 100 determined by the connection information 122 that has been input or newly input. The search for the connected device can be performed according to the BLE specification. Specifically, since the sphygmomanometer 100 transferred to the BLE mode sends a packet containing the connection information 122, it is only necessary to connect the target device with the smartphone 200 and based on whether there is any connection information 122 that has been input or newly input Can be retrieved.

As a result of the search, if the sphygmomanometer 100 as the connected device is detected on the smartphone 200 side (FIG. 3: S206), the sphygmomanometer 100 and the smartphone 200 becomes a connection state capable of BLE-based communication (Figure 3: S103, S207). Then, between the sphygmomanometer 100 and the smartphone 200, while complying with the BLE specifications, the certification is obtained from the smartphone 200 side (Figure 3: S208), and the certification is permitted on the sphygmomanometer 100 side (Figure 3: S104) ), if the result is sent back to the smartphone 200 side (FIG. 3: S209), the connection status between each device is established.

When the connection state between the devices is established, on the side of the sphygmomanometer 100, as shown in FIG. 9, the BT mark 121 displayed on the LCD 116 changes from the blinking state to the lighting state (FIG. 3: S105).

Then, between the sphygmomanometer 100 and the smartphone 200 that have established the connection state, data communication according to the BLE specification is started. Specifically, the data measured by the sphygmomanometer 100 and stored in the memory function of the main microcomputer 110 is transmitted toward the smartphone 200 side. At this time, the touch panel 201 of the smartphone 200 outputs a display screen as shown in FIG. 10 (FIG. 3: S210). Preferably, information related to the sphygmomanometer 100 that is the slave device being connected (for example, model or model of the sphygmomanometer 100, etc.) 205 is clearly displayed on the display screen. Thereby, the operator of the smartphone 200 can clearly grasp which sphygmomanometer 100 is being connected.

If data communication is started, first, from the smartphone 200 side, time data is transmitted to the sphygmomanometer 100 (FIG. 3: S211). Then, if the time data is received on the side of the sphygmomanometer 100 (FIG. 3: S106), the time data of the clock function built in the sphygmomanometer 100 is updated (FIG. 3: S107). In this way, the clock function of the sphygmomanometer 100 can be automatically synchronized based on the information processing function of the smart phone 200 with higher performance than the sphygmomanometer 100. Therefore, as a result, the clock function of the sphygmomanometer 100 can be used at low cost High precision.

In addition, after the data communication starts, the blood pressure is checked from the side of the smartphone 200 The meter 100 requires memory to record information (Figure 3: S212). The memory record information refers to information for determining to what extent the amount of data retained in the memory function of the main microcomputer 110 of the sphygmomanometer 100 is determined. After the sphygmomanometer 100 transmits the memory record information according to this request (FIG. 3: S108 ), the sphygmomanometer 100 is requested to transfer the entire data stored in the memory from the smartphone 200 side (FIG. 3: S213 ). According to this request, the sphygmomanometer 100 starts the transfer of the data in the memory toward the smartphone 200 (FIG. 3: S109). Then, on the side of the smartphone 200, based on the transmitted memory record information, it is determined whether the final data from the sphygmomanometer 100 has been received (FIG. 3: S214). In this way, by using the information recorded in the memory to submit the data, even in the memory function on the side of the sphygmomanometer 100, the blood pressure measurement of the plural (for example, 50 to 100) is maintained according to the plural ID (for example, 10 to 20) of the personal ID category memory. In the case of the result data, all the data of the memory function can still be kept in the memory, while being transmitted to the smartphone 200 side according to the BLE specifications.

If the final data from the sphygmomanometer 100 is received, the communication end instruction is sent to the sphygmomanometer 100 from the smartphone 200 side (FIG. 3: S215). After receiving the communication end command (Figure 3: S110) on the side of the sphygmomanometer 100, the sphygmomanometer 100 and the smartphone 200 will be disconnected according to the connection status of BLE (Figure 3: S111, S216). Then, on the side of the sphygmomanometer 100, the BT mark 121 displayed on the LCD 116 is turned off (FIG. 3: S112). In addition, on the smartphone 200 side, the data obtained from the sphygmomanometer 100 is output to the display screen of the touch panel 201 as, for example, text (TEXT) data (FIG. 3: S217). However, it may not be text data but output as graphic image data. In addition, when this kind of data is output, it can also go through data editing processing or data processing processing. By referring to the results of such data output, the measurement results of the sphygmomanometer 100 can be managed using the smartphone 200. Furthermore, regarding data output or data management As long as it is a specific aspect, it is sufficient to use well-known technology, and a detailed description is omitted here.

<4. Effect of this embodiment>

According to this embodiment, one or more of the following effects can be obtained.

In this embodiment, after converting the address information inherent in the BT microcomputer 120 mounted on the sphygmomanometer 100, that is, the first specified number of alphanumeric strings that form part of a hexadecimal alphanumeric string into a decimal digit string The second specified number of digits in the digital string is used as the connection information 122, and the connection information 122 is used to establish the connection status between the sphygmomanometer 100 and the smartphone 200. Therefore, for example, even if there are plural sphygmomanometers 100 within the communicable range, the connection state with the smartphone 200 cannot be established as long as the connection information 122 which is each unique information is not attempted to match. That is, there is no case where the sphygmomanometer 100 does not know which sphygmomanometer 100 is connected to and cannot determine the connection state, and it is very necessary to ensure the security when the connection state is established. In addition, since the connection information 122 including the numeric string of the second specified number of digits is used as the connection key information, a high-level security function that may incur long-term development periods or increase processing load becomes unnecessary. In addition, the connection key information, that is, the connection information 122 is composed of a digital string of the second specified number of digits, so it can not only ensure the much-needed security, but also reduce the processing load (reduction of the memory capacity required for processing, etc.) . In addition, it is the one that can fully display the amount of output information in the LCD 116 of the sphygmomanometer 100. In addition, as the connection key information, compared with the case of directly using the machine's inherent manufacturing serial number or communication address information, etc. It takes too much time to input. Therefore, for the user, the convenience becomes very excellent. Moreover, the connection information 122 containing the digital string of the second specified number of digits is based on the inherent address information of the BT microcomputer 120, so in terms of ensuring security There is a great need, and furthermore, there is no need for complicated management operations such as the case of managing the sphygmomanometer 100 by providing unique identification information of the device. As described above, according to the present embodiment, in the case of performing wireless communication between the sphygmomanometer 100 and the smartphone 200, the connection destination can be determined and the security can be ensured without compromising user convenience.

In addition, in this embodiment, the BT microcomputer 120 mounted on the sphygmomanometer 100 performs wireless communication according to the BLE specification. Although there is no concept of pairing for the connection of BLE, even in this case, according to this embodiment, the connection destination can be determined and the security can be ensured without compromising user convenience. In other words, this embodiment can be said to be very suitable for wireless communication according to the BLE specification.

In addition, in the present embodiment, the health care device representing the sphygmomanometer 100 is a slave device. In addition to the sphygmomanometer 100, the health care device referred to herein includes a pulse meter or an activity meter. Such health care machines are often used in a state where there are a plurality of units in the communicable range, such as a blood pressure monitor in a health examination venue or an activity meter in a running meeting, for example. Even in this case, according to the present embodiment, it is possible to determine the connection destination while ensuring security, and it does not impair user convenience. That is, this embodiment can be said to be very suitable for the case where the slave device is a health care device.

<5. Modifications>

The embodiments of the present invention have been specifically described above, but the present invention is not limited to the above embodiments, and various changes can be made as long as they do not exceed the scope of the substance.

In this embodiment, the specific digits of the alphanumeric string or numeric string are exemplified when the connection information 122 is generated, but the present invention is not limited to this. That is, as long as the present invention converts a part of the address information into a digital string, the specified number of digits of the digital string is extracted and used as the connection information. As for the specific number of digits, as long as it is preset, and No special restrictions.

In addition, in this embodiment, the case of performing wireless communication according to the BLE specification has been described as an example, but the present invention can also be applied to the case of performing wireless communication by other specifications such as conventional Bluetooth (registered trademark).

In addition, in this embodiment, although the slave device is a health care device such as a sphygmomanometer 100 and the main device is a portable information processing terminal device such as a smartphone 200, the present invention is not limited to this. That is, the present invention can be applied to a master-slave system that performs wireless communication between a master device and a slave device.

100‧‧‧Sphygmomanometer (slave device)

101‧‧‧Body

102‧‧‧Connector

103‧‧‧Pump

104‧‧‧ECV

105‧‧‧ battery

106‧‧‧DC socket & switch

107‧‧‧AC adapter

110‧‧‧Main microcomputer

110a‧‧‧Information generation means

110b‧‧‧Information output means

111‧‧‧Oscillator

112‧‧‧ First driver

113‧‧‧ Second drive

114‧‧‧ Regulator

115‧‧‧pressure sensor

116‧‧‧LCD

117‧‧‧ touch switch (BT key)

120‧‧‧BT microcomputer

Claims (4)

A slave device, characterized in that it is provided with: a wireless communication module for wireless communication with a main device; an information generating means for the first provision of a part of the address information inherent to the wireless communication module After the number of digits is converted into a digital string, the second specified number of digits in the digital string is retrieved as connection information; and information output means is used to output the connection information in order to establish the connection status with the main device. The slave device of claim 1, wherein the wireless communication module performs wireless communication in accordance with Bluetooth low energy consumption specifications. The slave device according to claim 1 or 2, wherein the slave device is a health care machine. A connection establishment method is to establish a connection state between the master device and the slave device for wireless communication between the master device and the slave device, and is characterized in that it is inherent in the wireless communication module mounted on the slave device After the first specified number of bits in a part of the address information is converted into a digital string, the second specified number of bits in the digital string is retrieved as connection information, and the connection information is used to establish the connection status of the master device and the slave device .

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