JP7172412B2 - SENSOR CONTROL DEVICE, SENSOR DEVICE, SENSOR CONTROL METHOD AND SENSOR CONTROL PROGRAM - Google Patents

Description

The present invention relates to a sensor control device, a sensor device, a sensor control method, and a sensor control program.

For example, there are devices that provide a pressure-sensitive insole within the runner's shoe and can quantify the runner's responsiveness from measurements of the time-dependent center of pressure applied against the surface of the pressure-sensitive insole during running. (see, for example, Patent Document 1).

Japanese translation of PCT publication No. 2014-528752

However, since the device disclosed in Patent Document 1 operates with a power supply battery provided in the shoe, there is a problem of battery life.

The present invention has been made in view of such problems, and an object of the present invention is to provide a sensor control device, a sensor device, a sensor control method, and a sensor control program capable of extending battery life.

In order to solve the above problems, the sensor control device according to the present invention includes:
Acquisition means for acquiring sensor data output by a motion sensor that senses the state of the user either during running or walking;
detection means for detecting a swing phase when the user is either running or walking , based on the sensor data output by the motion sensor acquired by the acquisition means ;
Derivation means for deriving the period of either running or walking;
a control means for controlling the operation of a predetermined sensor that senses the force applied to the user's sole according to the detection result of the detection means;
with
The detecting means detects the start of the swing phase and the end of the swing phase based on the period derived by the deriving means,
The control means stops the operation of the predetermined sensor when the detection means detects the start of the swing period, and the detection means detects the end of the swing period. starting the operation of the predetermined sensor at a timing a predetermined time before the end timing;
It is characterized by

According to the present invention, battery life can be extended.

It is a block diagram showing the functional configuration of the sensor device. 3 is a schematic diagram showing a circuit configuration of a power control circuit unit; FIG. 4 is a flowchart showing sensor control processing; It is a figure which shows the cycle of walking motion.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the illustrated examples.

<<Schematic configuration of the sensor device 100>>
The sensor device 100 of the present embodiment is a device for measuring the force applied to the user's sole during walking (including running). used for

FIG. 1 is a block diagram showing a schematic configuration of a sensor device 100 of one embodiment to which the present invention is applied. FIG. 2 is a schematic diagram showing the circuit configuration of the power supply control circuit section 19. As shown in FIG.
As shown in FIG. 1, the sensor device 100 includes a CPU (Central Processing Unit) 11, a RAM (Random Access Memory) 12, a storage section 13, an operation section 14, a communication section 15, and a pressure sensor section 16. , a motion sensor section 17 , a power supply section 18 , and a power control circuit section 19 . Also, each part of the sensor device 100 is connected via a bus B. FIG. Note that a sensor control device 10 is a portion of the sensor device 100 that is configured by the respective portions excluding the pressure sensor portion 16 and the motion sensor portion 17 .

CPU (acquisition means, detection means, control means, derivation means) 11 reads various programs such as system programs and application programs stored in storage unit 13 based on control signals input from operation unit 14, , and execute the various programs in sequence.

The RAM 12 is, for example, a volatile memory, and has a work area for temporarily storing various programs and data read by the CPU 11 .

The storage unit 13 is configured by, for example, a non-volatile memory such as flash memory. The storage unit 13 stores various programs (system programs and application programs) executed by the CPU 11, data necessary for executing the various programs, and the like.

The operation unit 14 includes, for example, a power button for turning ON/OFF the power of the sensor device 100 . When various buttons are operated, the operation unit 14 outputs an operation instruction to the CPU 11 according to the operated button.

The communication unit 15 is an interface for performing wireless data communication with an external device. Specifically, the communication unit 15 includes, for example, an antenna, a modulation/demodulation circuit, a signal processing circuit, etc., and performs communication according to a standard such as Bluetooth (registered trademark).

The pressure sensor unit 16 includes a pressure sensor (predetermined sensor) 16a, an amplifier (AMP) 16b, an AD converter (ADC) 16c, and the like. As shown in FIG. 2, the pressure sensor unit 16 amplifies analog sensor data detected by the pressure sensor 16a with an amplifier (AMP) 16b, and then digitizes the analog sensor data with an AD converter (ADC) 16c. sensor data, and outputs the digital sensor data to the CPU 11 .

The motion sensor unit 17 includes a motion sensor capable of detecting motion of the sensor device 100 such as a triaxial acceleration sensor, a gyro sensor, a geomagnetic sensor, an amplifier, an AD converter, and the like. The motion sensor unit 17 amplifies analog sensor data detected by the motion sensor with an amplifier, converts the analog sensor data into digital sensor data with an AD converter, and outputs the digital sensor data to the CPU 11. do.

The power supply unit 18 includes, for example, a battery. A secondary battery is used as the battery of the power supply unit 18 . As the battery of the power supply unit 18, a primary battery such as a button type dry battery may be used in addition to the secondary battery.

The power control circuit unit 19 includes, for example, a switching element 19a. As shown in FIG. 2, the power control circuit unit 19 switches the state of the switching element 19a based on the power control signal output from the CPU 11, thereby supplying power to each of the pressure sensor 16a, the amplifier 16b, and the AD converter 16c. Start or stop the power supply.

<<Operation of the sensor device 100>>
Next, sensor control processing executed by the CPU 11 will be described with reference to FIGS. 3 and 4. FIG. FIG. 3 is a flowchart showing sensor control processing. FIG. 4 is a diagram showing the cycle of walking motion (stance phase and swing phase). Here, the stance phase refers to a phase in which one of the left and right feet is in contact with the supporting surface, and the swing phase is the phase in which the one foot is in contact with the supporting surface. means a situation in which it is not That is, each of the left and right feet has a stance phase and a swing phase.

As shown in FIG. 3, first, the CPU 11 activates the pressure sensor unit 16 and the motion sensor unit 17 when an instruction to start measuring the force applied to the sole of the user's foot is given via the operation unit 14, for example. (step S1).

Next, the CPU 11 derives the cycle of the user's walking motion or running motion based on the sensor data output from the motion sensor unit 17 (step S2). Specifically, for example, when the user is performing a walking motion, as shown in FIG. , the acceleration value starts to increase from 0, reaching the first peak strength between the initial swing and the middle swing, and then the foot on the side opposite to the kicking leg (Fig. The black leg in the middle) is attracted to the body and decelerates, and becomes 0 when the opposite leg is attracted to the body in the mid-swing period. Subsequently, the traveling direction acceleration begins to increase in value as the opposite leg advances to the front of the body, reaching a second peak strength near the mid-swing stage and the final swing stage. , then decreases due to deceleration as the foot on the opposite side approaches the landing, and becomes 0 when the foot on the opposite side lands at the end of the free leg. , the swing period is derived as the cycle of the user's walking motion, and the period other than the swing period is derived as the stance period. Note that the method for deriving the period of the walking motion described above is merely an example, and the period of the walking motion may be derived by another method.

Next, the CPU 11 determines whether or not the start timing of the swing phase is detected from the cycle of the walking motion derived in step S2 (step S3).

If it is determined in step S3 that the start timing of the swing phase has not been detected (step S3; NO), the CPU 11 continues the determination process of step S3 until the start timing of the swing phase is detected. Repeat.
On the other hand, if it is determined in step S3 that the start timing of the swing phase has been detected (step S3; YES), the CPU 11 sends a power control signal to the power control circuit unit 19 at the detected start timing of the swing phase. By outputting and switching each switching element 19a to a non-energized state, the power supply to the pressure sensor section 16 is stopped (step S4).

Next, the CPU 11 determines whether or not the end timing of the swing phase is detected from the cycle of the walking motion derived in step S2 (step S5).

If it is determined in step S5 that the end timing of the swing phase has not been detected (step S5; NO), the CPU 11 continues the determination process of step S5 until the end timing of the swing phase is detected. Repeat.
On the other hand, if it is determined in step S5 that the end timing of the swing phase has been detected (step S5; YES), the CPU 11 causes the power supply control circuit unit 19 to send a signal to the power supply control circuit unit 19 a predetermined time before the detected end timing of the swing phase. By outputting a power supply control signal and switching each switching element 19a to an energized state, power supply to the pressure sensor unit 16 is restarted (step S6).

Next, the CPU 11 determines whether or not an instruction to end the measurement of the force applied to the sole of the user's foot has been issued via the operation unit 14 (step S7).

When it is determined in step S7 that the measurement end instruction has not been given (step S7; NO), the CPU 11 returns the process to step S2, and repeats the process thereafter.
On the other hand, if it is determined in step S7 that the measurement end instruction has been issued (step S7; YES), the CPU 11 stops the operation of the pressure sensor unit 16 and the motion sensor unit 17 (step S8), and ends the sensor control process. do.

As described above, according to the present embodiment, the sensor device 100 (sensor control device 10) detects one state of the user during running or walking, and according to the detection result, the user's sole is affected. Since the operation of the pressure sensor unit 16 that senses force is controlled, power consumption by the pressure sensor unit 16 can be reduced. Thereby, the life of the battery of the power supply unit 18 can be extended.

Further, according to the present embodiment, the sensor device 100 (sensor control device 10) acquires sensor data output by a motion sensor (motion sensor unit 17) that senses the state of the user during running or walking, Since one state of the user is detected based on the sensor data, one state of the user can be accurately detected. Therefore, according to the sensor device 100, it is possible to accurately detect one state of the user, so that the operation of the pressure sensor section 16 can be preferably controlled.

Further, according to the present embodiment, the sensor device 100 (sensor control device 10) detects the swing phase during running or walking of the user based on the sensor data output by the motion sensor unit 17. Since the operation of the pressure sensor unit 16 that senses the force applied to the sole of the user is controlled according to the detection result, the operation of the pressure sensor unit 16 can be stopped during the detected swing phase. Become. As a result, it is possible to stop the operation of the pressure sensor unit 16 by utilizing the swing period during which it is not necessary to measure the force applied to the sole of the user. power consumption can be suitably reduced.

Further, according to the present embodiment, the sensor device 100 (sensor control device 10) detects the start of the swing phase and the end of the swing phase, and when the start of the swing phase is detected, the pressure sensor unit 16 detects the start of the swing phase. is stopped, and when the end of the swing phase is detected, the operation of the pressure sensor section 16 is started, so that the power consumption of the pressure sensor section 16 can be reduced to the maximum.

Further, according to the present embodiment, the sensor device 100 (sensor control device 10) derives the cycle during running or walking, and based on the derived cycle, the start of the swing phase and the end of the swing phase are detected. is detected, and when the end of the swing phase is detected, the operation of the pressure sensor unit 16 is started at a timing a predetermined time before the timing of the end of the swing phase. can reliably measure the force applied to the sole of the user's foot.

Further, according to the present embodiment, the sensor device 100 includes the sensor control device 10, the motion sensor section 17, and the pressure sensor section 16, so that the operation control of the pressure sensor section 16 can be efficiently performed. can be done.

In addition, according to the present embodiment, the sensor device 100 is built into the insole or shoe sole that is placed inside the shoe, so that it can be made less likely to affect the user's motion during running or walking. .

Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and it goes without saying that various modifications are possible without departing from the scope of the invention.

For example, in the above embodiment, the sensor device 100 includes the pressure sensor section 16, but instead of the pressure sensor section 16, it may include a force sensor section. This force sensor unit is provided with a force sensor, an amplifier, an AD converter, and the like.

Further, in the above-described embodiment, the sensor device 100 is incorporated in the insole or shoe sole that is arranged inside the shoe, including the motion sensor section 17. However, for example, the motion sensor section 17 may It may be set as Specifically, the portion of the sensor device 100 excluding the motion sensor section 17 is the sensor device main body, and the sensor device main body is incorporated in the insole or shoe sole. , and a communication unit capable of transmitting the sensor data output from the motion sensor unit 17. A separate device (attachment device) is provided. Then, this separate device is used by being attached to a part capable of sensing the motion of the user during walking, such as the user's waist or knee.

In the above embodiment, the sensor device 100 derives the walking cycle of the user based on the acceleration data in the user's traveling direction output from the motion sensor unit 17. The derivation method is not limited to the above method. For example, the sensor device 100 derives the global coordinates of the user's feet based on the sensor data output from the sensors that make up the motion sensor unit 17, and walks from the positional relationship between the user's feet and the ground. You may make it derive a period of operation|movement.

Further, in the above embodiment, the sensor device 100 stops or restarts the power supply to the pressure sensor unit 16 by executing the sensor control process (see FIG. 3), but this sensor control process is an example. It's nothing more than For example, in the sensor device 100, the matching rate between the cycle of the walking motion derived in step S2 of the sensor control process and the cycle of the walking motion derived in the most recent step S2 is a first threshold value (for example, 90%). In the above cases, as in the above embodiment, the processing from step S3 onwards is performed, and if the matching rate is less than the second threshold value (for example, 30%), power supply to the pressure sensor unit 16 is stopped. You can do it. Further, when the matching rate is less than the first threshold value and equal to or greater than the second threshold value, the sensor device 100 sets the sampling rate of the sensor data output from the pressure sensor unit 16 to be lower than normal. The sampling rate may be returned to the normal rate when sensor data is output from the sensor unit 16, that is, when pressure applied to the sole of the user's foot is detected.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, and includes the scope of the invention described in the claims and their equivalents.
The invention described in the scope of claims originally attached to the application form of this application is additionally described below. The claim numbers in the appendix are as in the claims originally attached to the filing of this application.

[Appendix]
<Claim 1>
detection means for detecting one state of the user when running or walking;
a control means for controlling the operation of a predetermined sensor that senses the force applied to the user's sole according to the detection result of the detection means;
A sensor control device comprising:
<Claim 2>
Acquiring means for acquiring sensor data output by a motion sensor that senses the state of the user while running or walking,
The detection means detects one state of the user based on the sensor data output by the motion sensor acquired by the acquisition means.
2. The sensor control device according to claim 1, wherein:
<Claim 3>
The detection means detects a swing phase when the user is running or walking, based on sensor data output from the motion sensor.
3. The sensor control device according to claim 2, wherein:
<Claim 4>
The control means stops the operation of the predetermined sensor when the swing phase is detected by the detection means.
4. The sensor control device according to claim 3, characterized in that:
<Claim 5>
The detection means detects the start of the swing period and the end of the swing period,
The control means stops the operation of the predetermined sensor when the detection means detects the start of the swing period, and the predetermined sensor is activated when the detection means detects the end of the swing period. start the action,
5. The sensor control device according to claim 3 or 4, characterized in that:
<Claim 6>
Provided with derivation means for deriving the period during running or walking,
The detecting means detects the start of the swing phase and the end of the swing phase based on the period derived by the deriving means,
When the detection means detects the end of the swing period, the control means causes the predetermined sensor to start operating at a predetermined time before the end of the swing period.
6. The sensor control device according to claim 5, wherein:
<Claim 7>
the predetermined sensor is a pressure sensor,
The sensor control device according to any one of claims 1 to 6, characterized in that:
<Claim 8>
a sensor control device according to any one of claims 1 to 7;
the predetermined sensor;
A sensor device comprising:
<Claim 9>
9. The sensor device of claim 8, further comprising the motion sensor.
<Claim 10>
The sensor device is built into an insole or a sole placed inside the shoe,
10. The sensor device according to claim 8 or 9, characterized in that:
<Claim 11>
a detection step of detecting a state of the user when running or walking;
a control step of controlling the operation of a predetermined sensor that senses the force applied to the sole of the user according to the detection result of the detection step;
A sensor control method, comprising:
<Claim 12>
the computer,
detection means for detecting one state of the user when running or walking;
Control means for controlling the operation of a predetermined sensor that senses the force applied to the sole of the user according to the detection result by the detection means;
A sensor control program characterized by functioning as

100 sensor device 10 sensor control device 11 CPU (acquisition means, detection means, control means, derivation means)
16 pressure sensor unit 16a pressure sensor (predetermined sensor)
17 motion sensor

Claims (7)

Acquisition means for acquiring sensor data output by a motion sensor that senses the state of the user either during running or walking;
detection means for detecting a swing phase when the user is either running or walking , based on the sensor data output by the motion sensor acquired by the acquisition means ;
Derivation means for deriving the period of either running or walking;
a control means for controlling the operation of a predetermined sensor that senses the force applied to the user's sole according to the detection result of the detection means;
with
The detecting means detects the start of the swing phase and the end of the swing phase based on the period derived by the deriving means,
The control means stops the operation of the predetermined sensor when the detection means detects the start of the swing period, and the detection means detects the end of the swing period. starting the operation of the predetermined sensor at a timing a predetermined time before the end timing;
A sensor control device characterized by: the predetermined sensor is a pressure sensor,
2. The sensor control device according to claim 1, wherein: A sensor control device according to claim 1 or 2 ;
the predetermined sensor;
A sensor device comprising: 4. The sensor device of claim 3 , further comprising the motion sensor. The sensor device is built into an insole or a sole placed inside the shoe,
5. The sensor device according to claim 3 or 4 , characterized in that: an acquisition step of acquiring sensor data output by a motion sensor that senses the state of the user either when running or walking; and based on the sensor data output by the motion sensor acquired by the acquisition step, A detection step of detecting a swing phase during either running or walking, a derivation step of deriving the period of either running or walking, and a detection result by the detection step A sensor control method for a sensor control device, comprising:
the detecting step detects the start of the swing phase and the end of the swing phase based on the cycle derived by the deriving step;
The control step stops the operation of the predetermined sensor when the detection step detects the start of the swing period, and the detection step detects the end of the swing period. starting the operation of the predetermined sensor at a timing a predetermined time before the end timing;
A sensor control method characterized by: Acquisition means for acquiring sensor data output by a motion sensor that senses the user's state of either running or walking; and based on the sensor data output by the motion sensor acquired by the acquisition means, the user detection means for detecting a swing phase during either running or walking, derivation means for deriving the period of either running or walking, and detection results by the detection means Accordingly, the computer of the sensor control device comprising control means for controlling the operation of a predetermined sensor that senses the force applied to the user's sole,
causing the detecting means to detect the start of the swing phase and the end of the swing phase based on the period derived by the deriving means;
The control means is configured to stop the operation of the predetermined sensor when the detection means detects the start of the swing phase, and to stop the swing phase when the detection means detects the end of the swing phase. starting the operation of the predetermined sensor at a timing a predetermined time before the end timing;
A sensor control program characterized by:

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