JP3158376U - Wireless sensor - Google Patents

Abstract

A wireless sensor that does not adversely affect the directivity of an antenna due to the movement of a human body and has good wearability. A sensor unit for acquiring human body information, a signal processing unit, a wireless transmission unit, and a battery unit are configured as one device, and an antenna unit 5 is formed outside the device, and the device and the antenna unit are used as a wristband. Wristband type wireless sensor characterized by being attached. [Selection] Figure 1

Description

  The present invention relates to a wristband type wireless sensor attached to an arm.

  A technology for detecting moving human body information with a sensor and wirelessly transmitting and receiving the data is widely known and widely used in the field of sports medical science. For example, a pulse ear sensor measures and analyzes a pulse when exercising on a running machine or the like, and measures a pulse with a light emitting element and a light receiving element sandwiched between ear lobes. The data is transmitted by radio waves by a wireless transmission device attached to the abdominal belt via a cable (Patent Document 1).

  Recently, there is a demand for a system that constantly collects human body information for health management in the field of nursing care. In this case, not only is the device small and light, but it is also important to not feel uncomfortable with the device.

JP2002-360529

  The wireless sensor is roughly divided into a sensor unit, a signal processing unit, a wireless transmission unit, an antenna unit, and a battery unit. When moving human body information is detected by a sensor and wirelessly transmitted, connecting the sensor unit and wireless transmission unit via a cable like the conventional pulse ear sensor will limit the movement of the human body due to the cable. This causes a sense of incongruity with the wireless sensor.

  In order to avoid this, it is desired to integrate the components of the wireless sensor into a light, thin and small device. However, when the antenna unit is incorporated in a device, the antenna efficiency is lowered, so that radio wave radiation is weakened, and wireless transmission may be interrupted depending on the movement of the human body. In order to increase the antenna efficiency, it is desirable that the antenna unit be outside the device. However, if the antenna installed outside and the device are connected by a cable or the like, the movement of the human body is restricted.

  The present invention has been made in view of the above points, and is a wireless sensor in which each component of a wireless sensor is integrated without a cable or the like so that wireless transmission is not interrupted by the movement of the human body and does not affect the movement of the human body. I will provide a.

  A sensor unit, a signal processing unit, a wireless transmission unit, and a battery unit for acquiring human body information are configured as one device, the antenna unit is formed outside the device, and the device and the antenna unit are attached to a wristband. And

  As an effect of the present invention, the wireless sensor including the antenna unit is fixed to a part of the wristband, so that there is no sense of discomfort with the wearing. In addition, since the antenna unit is attached to the outside of the device, radio wave radiation from the antenna unit is not hindered as in the case of incorporating the device, and a configuration of a wireless sensor suitable for a moving human body can be provided. I can do it.

Wristband type wireless sensor in an embodiment of the present invention Diagram showing a part of a list type wireless sensor The figure which shows the equipment part of the wireless sensor Wireless sensor circuit block diagram

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of the present invention. A wristband or wrist strap is used by wrapping around a wrist using a stretchable cloth, and is used for various purposes such as sweat prevention and antistatic. From the point of being widely used, there is no sense of incongruity when wearing. A flexible substrate 3 is attached to such a stretchable cloth 2, and an antenna portion 5 is formed with a metal pattern on the flexible substrate, and a device portion 4 of a wireless sensor is further attached. In addition, although 1 shows a magic tape, there is no restriction | limiting in particular in a stopper.

  As shown in FIG. 2, it is preferable that the antenna unit 5 be out of the wireless sensor device unit 4 and a dipole antenna be formed on the flexible substrate. By doing so, the antenna efficiency is increased, and wireless transmission is not interrupted by the movement of the human body, so that reliable data transmission is possible. In addition, the size of the antenna is not particularly limited.

  FIG. 4 shows a circuit block diagram of the device unit 4 and the antenna unit 5 of the wireless sensor shown in FIG. As shown in the circuit block (FIG. 4), the device unit 4 includes a pressure sensor 6, a CPU, an RFIC, a reset IC, a watchdog timer 9, and a reset button 10. Note that the battery 7 is not shown in the circuit block. However, only necessary functions are described in the circuit block, and not all are necessarily limited.

  The sensor 6 in this embodiment uses a pressure sensor and is used for measuring a pulse. Although the same pressure sensor 6 is formed in two places in FIG. 3, it is for preventing detection omission due to wristband displacement, and a plurality of pressure sensors 6 may be formed. At the same time, a multi-sensor configuration can be adopted so that a body temperature can be measured by attaching a temperature sensor. In the present invention, the type and number of sensors are not particularly limited.

  The wireless sensor of the present invention is designed to be attached to the wrist. This is because wristbands are widely used and there is no sense of incongruity with wearing. In addition, the antenna is configured to be out of the device, and since the antenna is formed on a flexible substrate, there is no particular limitation on the antenna size, and the antenna efficiency can be increased. Therefore, a battery by securing a propagation distance or reducing transmission power The service life can be extended.

In the past, human body information was acquired and analyzed for movements within a limited range such as running machines and training machines. Human information similar to exercise can be acquired, contributing to the development and improvement of sports medical science. In addition, although the health (abnormality) management of the subject is particularly required in the care field, it is not used if there is at least an uncomfortable feeling with respect to wearing. In the field of nursing care, there has never been a wireless sensor that can be used for the purpose of health management. However, the present invention can be used without difficulty.
In the embodiment of the present invention, an antenna patterned with metal is used for the flexible substrate. However, it is obvious that the same effect can be obtained even if the wire-shaped antenna is directly incorporated in the wristband without using the flexible substrate. is there.

DESCRIPTION OF SYMBOLS 1 Magic tape 2 Wristband cloth 3 Flexible substrate 4 Wireless sensor device part 5 Antenna part 6 Sensor part 7 Battery 8 Semiconductor IC block 9 Watchdog timer 10 Reset button

Claims (1)

A sensor unit, a signal processing unit, a wireless transmission unit, and a battery unit for acquiring human body information are configured as one device, the antenna unit is formed outside the device, and the device and the antenna unit are attached to a wristband. Wristband type wireless sensor

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