JP2021037210A - Biological information measurement device - Google Patents

Abstract

To provide a biological information measurement device capable of reducing noise occurring in a biological signal in comparison with a case when a circuit for processing the biological signal and a receiving part are mounted on a single board.SOLUTION: The biological information measurement device comprises: a first board having a circuit for processing an inputted biological signal formed on a mounting surface; and a second board which is disposed along the first board at a part separated in the thickness direction of the first board and has a receiving unit for sending and receiving signals to and from the first board and to receive a mechanical load.SELECTED DRAWING: Figure 6

Description

The present invention relates to a biological information measuring device.

Patent Document 1 discloses a bone conduction earphone.

In this bone conduction earphone, the vibration source housed in the accommodating chamber of the earphone body has a rectangular substrate and a piezoelectric diaphragm in which a part thereof is fixed to the substrate in a state separated from the substrate. The vibration of the piezoelectric diaphragm is also transmitted to the substrate via the spacer, causing the entire vibration source to vibrate and the earphone body to vibrate. The vibration of the earphone body is transmitted to the user's outer ear via the ear insertion part, converted into an electric signal via the cochlear organ / auditory nerve via the outer ear, and transmitted to the brain.

Japanese Unexamined Patent Publication No. 2009-11182

INDUSTRIAL APPLICABILITY The present invention makes it possible to reduce the noise generated in a biological signal as compared with the case where a circuit for processing a biological signal and a reception unit for receiving a mechanical load from the outside are mounted on a single substrate. An object of the present invention is to provide a biological information measuring device.

In the first aspect, the first substrate on which the circuit for processing the input biological signal is formed and the first substrate are arranged along the first substrate at a portion separated in the plate thickness direction of the first substrate. A biological information measuring device provided with a second substrate provided with a reception unit for exchanging signals between them and receiving a mechanical load.

Aspect 2 is the biomedical information according to the first aspect, wherein the input unit to which the input line for inputting the biological signal is connected and the transfer unit to which the signal transfer line is connected are arranged at separate positions. measuring device.

Aspect 3 is the biomedical information measuring device according to the first or second aspect, wherein the first integrated circuit that processes the biological signal and the second integrated circuit that processes the signal to be passed are provided on different mounting surfaces.

Aspect 4 is the biometric information measuring apparatus according to Aspect 3, wherein the first integrated circuit and the second integrated circuit are provided separately on one surface and the other surface of the same substrate.

Aspect 5 is the biometric information measuring apparatus according to aspect 4, wherein a shield layer is formed between the mounting surface provided with the first integrated circuit and the mounting surface provided with the second integrated circuit.

Aspect 6 is the biometric information measuring device according to Aspect 3, wherein the first integrated circuit and the second integrated circuit are provided on different substrates.

Aspect 7 has a shield layer arranged between a mounting surface provided with the first integrated circuit and a mounting surface provided with the second integrated circuit, and the shield layer is provided with the first integrated circuit. The biometric information measuring device according to the sixth aspect, which is formed on at least one of the provided substrate or the substrate provided with the second integrated circuit.

Aspect 8 is the biological information measuring apparatus according to any one of aspects 2 to 7, wherein a wiring hole through which an input line for inputting a biological signal passes is formed on the second substrate.

Aspect 9 is the biometric information measuring device according to aspect 8, wherein the signal passing line is wired through the outer peripheral portion of the second substrate.

In the first aspect, it is possible to reduce the noise generated in the biological signal as compared with the case where the circuit for processing the biological signal and the reception unit for receiving the mechanical load from the outside are mounted on a single substrate. ..

In the second aspect, noise propagation between the input line connected to the input unit and the delivery line connected to the delivery unit is suppressed as compared with the case where the input unit and the delivery unit are arranged close to each other. Is possible.

In the third aspect, it is possible to suppress the noise given to the biological signal by the delivery signal as compared with the case where the first integrated circuit and the second integrated circuit are provided on the same mounting surface.

In the fourth aspect, as compared with the case where the first integrated circuit and the second integrated circuit are provided on the same surface of the same substrate, it is possible to suppress the routing of the signal line between the substrates.

In the fifth aspect, it is possible to suppress the influence of the input / output signal to the second integrated circuit on the biological signal processed by the first integrated circuit, as compared with the case where the shield layer is not provided.

In the sixth aspect, the wiring pattern to the first integrated circuit and the wiring pattern to the second integrated circuit are arranged separately from each other as compared with the case where the first integrated circuit and the second integrated circuit are provided on the same substrate. It becomes possible.

In the seventh aspect, it is possible to suppress the influence of the input / output signal to the second integrated circuit on the biological signal processed by the first integrated circuit, as compared with the case where the shield layer is not provided.

In the eighth aspect, the wiring length can be shortened as compared with the case where the input line for the biological signal is routed around the second substrate.

In the ninth aspect, the noise generated in the biological signal can be reduced as compared with the case where the input line for the biological signal and the transfer line for signal transfer are wired through the wiring holes.

It is a perspective view which shows the biological information measuring apparatus which concerns on 1st Embodiment. It is a block diagram which shows the biological information measuring apparatus which concerns on 1st Embodiment. It is a block diagram which shows the biological information measuring apparatus which concerns on 1st Embodiment. It is a perspective view which shows the inside of the biological information measuring apparatus which concerns on 1st Embodiment. It is sectional drawing which follows the AA line of FIG. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the arrangement of the integrated circuit provided in the biological information measuring apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the substrate which provided the integrated circuit of the biological information measuring apparatus which concerns on 1st Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 2nd Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 3rd Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 4th Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 5th Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 6th Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 7th Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 8th Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on 9th Embodiment. It is explanatory drawing which shows the substrate provided in the biological information measuring apparatus which concerns on tenth embodiment. It is sectional drawing which shows the arrangement of the integrated circuit provided in the biometric information measuring apparatus which concerns on eleventh embodiment. It is sectional drawing which shows the arrangement of the integrated circuit provided in the biometric information measuring apparatus which concerns on 12th Embodiment. It is sectional drawing which shows the arrangement of the integrated circuit provided in the biometric information measuring apparatus which concerns on 13th Embodiment. It is sectional drawing which shows the substrate which provided the integrated circuit of the biological information measuring apparatus which concerns on 1st Embodiment.

(First Embodiment)
Hereinafter, the first embodiment will be described with reference to the drawings.

FIG. 1 is a diagram showing a biological information measuring device 10 according to the present embodiment, and the biological information measuring device 10 is a device attached to a living body to acquire biological information.

Examples of the living body to which the biological information measuring device 10 is attached include animals, and the case where the biological information measuring device 10 is attached to a human being, which is an example of an animal, will be described as an example. The biological information measuring device 10 may be attached to pets such as dogs and cats and livestock.

Examples of the biological information acquired by the biological information measuring device 10 include pulse, muscle movement, and brain wave. Among these biological information, examples of generating bioelectricity in the living body include muscle movement and brain waves. The biometric information measuring device 10 of the present embodiment measures brain waves from the acquired bioelectricity.

The biological information measuring device 10 is attached to the head of a human body, and specifically, is attached to an ear and has an earphone function. The biological information measuring device 10 includes a right mounting portion 12 mounted on the right ear, a left mounting portion 14 mounted on the left ear, and a linear connecting portion 16 connecting both mounting portions 12 and 14. There is.

The right mounting portion 12 and the left mounting portion 14 are provided with a substrate for acquiring bioelectricity as a biological signal, and the substrate of the right mounting portion 12 and the substrate of the left mounting portion 14 are provided in the connecting portion 16. It is electrically connected via a harness.

FIG. 2 is a configuration diagram showing the biological information measuring device 10. The left mounting portion 14 is provided with a battery 18, a left speaker 20, a first left left electroencephalogram sensor 22, and a second left electroencephalogram sensor 24.

The right mounting unit 12 includes an operation unit 26, a right speaker 28, a first right electroencephalogram sensor 30, a second right electroencephalogram sensor 32, a control unit 34, a voice processing unit 36, and an electroencephalogram signal processing unit 38. , Communication unit 40 and microphone 42 are provided. The operation unit 26 is provided on the first board 72 described later, and the control unit 34, the voice processing unit 36, the electroencephalogram signal processing unit 38, the communication unit 40, and the microphone 42 are the second board described later. It is provided in 74.

FIG. 3 is a block diagram showing a biological information measuring device 10, in which a battery 18, a communication unit 40, an operation unit 26, a voice processing unit 36, and an electroencephalogram signal processing unit 38 are connected to a control unit 34. Has been done.

The microphone 42, the right side speaker 28, and the left side speaker 20 are connected to the voice processing unit 36. Further, the first left electroencephalogram sensor 22, the second left electroencephalogram sensor 24, the first right electroencephalogram sensor 30, and the second right electroencephalogram sensor 32 are connected to the electroencephalogram signal processing unit 38.

The inside of the right mounting portion 12 and the mechanical inside of the left mounting portion 14 are configured in substantially the same manner, and the inside of the right mounting portion 12 will be described with reference to FIGS. 4 and 5.

The right mounting portion 12 includes a mounting portion main body 50 to which the connecting portion 16 is connected, and an insertion portion 52 extending from the mounting portion main body 50 and inserted into the ear canal. The mounting portion main body 50 includes a rectangular housing 54 (see FIG. 1), and the housing 54 is made of an insulator.

The housing 54 includes a container-shaped housing body 54A arranged on the inner side I on the human body side in a mounted state, and a lid 54B arranged on the outer side O that closes the opening opened in the housing body 54A. It has. A protrusion 54C protruding inward I is formed in the housing body 54A, and a metal cylindrical portion 56 constituting the first right electroencephalogram sensor 30 extends obliquely from the tip of the protrusion 54C. ing.

The cylindrical portion 56 includes a large-diameter large-diameter portion 56A fixed to the protruding portion 54C and a small-diameter small-diameter portion 56B extending from the large-diameter portion 56A. At the end of the large-diameter portion 56A, a driver 58 constituting a right-side speaker 28 that converts an electric signal into vibration is arranged, and the driver 58 reproduces music, voice, or the like and outputs the music or voice from the hole of the small-diameter portion 56B.

The earpiece 60 is replaceably attached to the small diameter portion 56B, and the earpiece 60 is inserted into the ear canal when worn. The earpiece 60 is made of a conductive member, and as an example of the conductive member, it is made of conductive rubber.

A metal penetrating member 62 constituting the second right electroencephalogram sensor 32 penetrates through the peripheral wall of the protruding portion 54C protruding from the housing 54. The penetrating member 62 includes a neck portion 62A penetrating the protruding portion 54C and a large-diameter head portion 62B arranged outside the protruding portion 54C. A ring member 64 mounted on the outer peripheral surface of the protruding portion 54C is in contact with the head portion 62B of the penetrating member 62.

The ring member 64 is replaceably attached to the groove 68 formed on the outer peripheral surface of the protrusion 54C, and the ring member 64 comes into contact with the auricle when worn. The ring member 64 is made of a conductive member, and as an example of the conductive member, it is made of a conductive rubber.

The housing 54 houses a substrate on which the electronic circuit of the biological information measuring device 10 is formed, and this substrate is divided into a first substrate 72 and a second substrate 74.

Here, in the present embodiment, the case where the substrate in the housing 54 is composed of the first substrate 72 and the second substrate 74 will be described, but the present invention is not limited thereto. This substrate may be composed of three or more substrates.

The first substrate 72 is arranged outside O from the second substrate 74, and the first substrate 72 has a circuit of an electroencephalogram signal processing unit 38 or the like (see FIG. 2) for processing an input biological signal formed on a mounting surface. Has been done.

The second substrate 74 is arranged so as to face each other along the first substrate 72 at a portion of the first substrate 72 separated in the plate thickness direction. The second substrate 74 and the first substrate 72 are electrically connected via a connecting line 76, and the second substrate 74 exchanges a signal with the first substrate 72 via the connecting wire 76. ..

As shown in FIG. 6, the second substrate 74 is provided with a first reception unit 78 and a second reception unit 80 that receive a mechanical load on the mounting surface.

In FIG. 6, the front side of the paper surface shows the inner side I, and the receiving portions 78 and 80 are provided on the second inner mounting surface 74A of the second substrate 74 arranged on the inner side I.

The first reception unit 78 is composed of a first switch soldered to a second substrate 74, and an example of the first switch is a push button switch. The operation unit 78A extending from the first reception unit 78 is provided with a first button 78B, and the first button 78B protrudes from the side surface of the housing 54 so that it can be pressed with a finger. As a result, the second substrate 74 receives a mechanical load when the first button 78B is pressed with a finger.

The second reception unit 80 is composed of a second switch soldered to the second substrate 74, and an example of the second switch is a push button switch. The operation unit 80A extending from the second reception unit 80 is provided with a second button 80B, and the second button 80B protrudes from the side surface of the housing 54 so that it can be pressed with a finger. As a result, the second substrate 74 receives a mechanical load when the second button 80B is pressed with a finger.
These reception units 78 and 80 form a volume and a selection key.

As shown in FIGS. 5 and 6, an input line 82 for inputting a biological signal is soldered to an input portion 84 connected to the first inner mounting surface 72A of the first substrate 72 arranged on the outer side O. And a delivery section 88 to which the delivery line 86 for signal delivery is connected by soldering.

The input unit 84 and the delivery unit 88 are composed of pads provided at the end or in the middle of the wiring pattern formed on the first inner mounting surface 72A, and are formed in an elliptical shape thicker than the wiring pattern as an example. There is.

The wiring pattern can be rephrased as printed wiring, and based on the circuit design, the conductor pattern indicates the wiring formed by printing on the front surface, the back surface, or the inside of the insulating substrate in order to connect the electronic components. ..

The input line 82 connected to the input unit 84 includes a GND line 82A and an EG line 82B. As shown in FIG. 5, the GND line 82B is connected to, for example, a penetrating member 62 constituting the second right side electroencephalogram sensor 32, and the EG line 82B is, for example, a cylindrical portion 56 constituting the first right side electroencephalogram sensor 30. It is connected to the. As a result, the first substrate 72 can acquire the potential difference generated between the pinna and the ear canal as biological information by measuring the potential difference between the GND line 82A and the EG line 82B.

The delivery line 86 connected to the delivery unit 88 is connected to the driver 58, and by passing the signal from the first board 72 to the driver 58 via the delivery line 86, music, voice, etc. are transmitted to the driver 58. Play with and output to the ear canal.

In the present embodiment, the case where the signal output from the delivery unit 88 is a sound signal such as music or voice will be described, but the present invention is not limited to this. Examples of the signal delivered by the delivery unit 88 include video, image, temperature, audio data, acoustic data, speech data, video data, image data, tactile data, vibration data, and the like.

As shown in FIGS. 4 and 6, the second substrate 80 is formed with an elliptical wiring hole 90 through which an input line 82 for inputting a biological signal passes. As shown in FIG. 5, the wiring hole 90 is formed at a portion of the second substrate 74 facing the input portion 84 in a state where the first substrate 72 and the second substrate 74 are arranged so as to overlap each other.

The input line 82 connected to the input portion 84 of the first board 72 is wired through the wiring hole 90 of the second board 74. On the other hand, the delivery line 86 connected to the delivery portion 88 of the first substrate 72 is wired through the outer peripheral portion of the second substrate 74 as shown in FIG. Further, when the delivery line 86 is wired through the outer peripheral portion of the second substrate 74, the wiring hole 90 is arranged so that the delivery line 86 does not line up with the input line 82.

As a result, it is possible to reduce the area in which the input line 82 for transmitting the biological signal and the delivery line 86 for transmitting the signal are wired side by side.

In FIG. 6, the input unit 84 is arranged on the left side in the longitudinal direction of the first substrate 72 and in the central portion in the lateral direction. Further, the delivery portion 88 is arranged on the right side in the longitudinal direction of the first substrate 72 and on the end side in the lateral direction, and the input portion 84 and the delivery portion 88 are arranged at separate positions. In other words, the input unit 84 and the delivery unit 88 are arranged at positions that are not adjacent to each other.

The first substrate 72 is formed with a biological signal processing circuit that constitutes a brain wave signal processing unit 38 that processes biological signals, and a delivery signal processing circuit that is a voice processing unit 36 that processes delivery signals.

As shown in FIG. 7, the biological signal processing circuit is configured to include a first integrated circuit 92 that processes biological signals, and the first integrated circuit 92 is configured by, for example, an ASIC that is an integrated circuit for a specific application. There is. The delivery signal processing circuit includes a second integrated circuit 94 that processes the signal to be delivered, and the second integrated circuit 94 is composed of an ASIC that is an integrated circuit for a specific application as an example.

The first integrated circuit 92 and the second integrated circuit 94 are provided on different mounting surfaces, and the first integrated circuit 92 and the second integrated circuit 94 are arranged separately on one surface and the other surface of the same substrate. ing. Specifically, the first integrated circuit 92 is arranged on the first outer mounting surface 72B of the first substrate 72, and the second integrated circuit 94 is arranged on the first inner mounting surface 72A of the first board 72. Has been done.

As shown in FIG. 8, the first substrate 72 is composed of a first outer mounting surface 72B, a first inner mounting surface 72A, and a multilayer substrate in which a wiring layer 96 is formed in an insulating substrate. In the first substrate 72, a metal shield layer is formed between the first outer mounting surface 72B provided with the first integrated circuit 92 and the first inner mounting surface 72A provided with the second integrated circuit 94. 98 (GND shield plane) is formed over the entire area, and the shield layer 98 is grounded to the GND line.

As a result, the first outer mounting surface 72B provided with the first integrated circuit 92 and the first inner mounting surface 72A provided with the second integrated circuit 94 are electromagnetically separable by the shield layer 98. ..

(Action and effect)
The operation of the present embodiment according to the above configuration will be described.

The second substrate 74 provided with the receiving portions 78 and 80 that receive the mechanical load is arranged at a portion separated in the plate thickness direction of the first substrate 72 that processes the biological signal.

Therefore, it is possible to reduce the noise generated in the biological signal as compared with the case where the circuit for processing the biological signal and the reception unit for receiving the mechanical load from the outside are mounted on a single substrate.

That is, as the noise generated in the second board 74 provided with the receiving units 78 and 80 that receive the mechanical load, noise caused by chattering during switch operation and noise such as static electricity received from the finger performing the switch operation are included. Can be mentioned. In addition, examples of other noise include noise caused by a deviation in the contact position between the earpiece 60 or the ring member 64 and the human body, which may occur during switch operation or tap operation.

In the present embodiment, it is possible to suppress the influence of these noises on the biological signal processing.

Then, the substrate arranged in the housing 54 was composed of the first substrate 72 and the second substrate 74 arranged so as to be overlapped when viewed from the side. As a result, even in the present embodiment in which the number of parts is large for real-time processing of brain waves, the size of the housing can be reduced, and the wearing feeling and the appearance quality can be improved.

Further, the input unit 84 to which the input line 82 for inputting the biological signal is connected and the delivery unit 88 to which the delivery line 86 for signal transfer is connected are arranged at positions apart from each other. Therefore, as compared with the case where the input unit 84 and the delivery unit 88 are arranged close to each other, the input line 82 connected to the input unit 84 and the delivery line 86 connected to the delivery unit 88 are connected to each other. It is possible to suppress signal propagation.

Specifically, the voltage level of the brain wave is very small (50 μV or less), and electrical noise propagation (crosstalk) is performed from the voltage level (3.3 V) of the audio signal processing and other control systems on the first substrate 72. Need to prevent.

Therefore, in the present embodiment, by passing the input line 82 through the wiring hole 90, it is possible to shorten the line length so that the input line 82 is not in close contact with the circuits of the second substrate 74 and the first substrate 72. Further, it is possible to prevent crosstalk between the input line 82 and the delivery line 86, and as a result, it is possible to suppress noise transmission.

In the present embodiment, the music signal output from the delivery unit 88 to the driver 58 includes a 40 Hz signal, and this 40 Hz signal overlaps with the region of the γ wave in the brain wave input from the input unit 84. Therefore, by suppressing the signal propagation between the input line 82 connected to the input unit 84 and the delivery line 86 connected to the delivery unit 88, it is possible to suppress the influence on the biometric signal processing.

The first integrated circuit 92 that processes the biological signal and the second integrated circuit 94 that processes the signal to be passed are provided on different mounting surfaces. Therefore, as compared with the case where the first integrated circuit 92 and the second integrated circuit 94 are provided on the same mounting surface, it is possible to suppress the influence of the delivery signal on the biological signal.

Further, the first integrated circuit 92 and the second integrated circuit 94 are provided separately on one surface and the other surface of the same substrate. Therefore, as compared with the case where the first integrated circuit 92 and the second integrated circuit 94 are provided on the same surface of the same substrate, it is possible to suppress the routing of signal lines between the substrates.

In particular, when the high-performance integrated circuits 92 and 94 are separately arranged on different substrates as in the present embodiment, the number of signal lines increases, so that the effect becomes remarkable.

Further, a shield layer 98 is formed between the first outer mounting surface 72B provided with the first integrated circuit 92 and the first inner mounting surface 72A provided with the second integrated circuit 94. Therefore, as compared with the case where the shield layer 98 is not provided, it is possible to suppress the influence of the input / output signal to the second integrated circuit 94 on the biological signal processed by the first integrated circuit 92.

Further, the second substrate 74 is formed with a wiring hole 90 through which an input line 82 for inputting a biological signal passes. Therefore, the wiring length can be shortened as compared with the case where the input line 82 for the biological signal is routed around the outer peripheral portion of the second substrate 74 as well.

Further, as compared with the case where the input line 82 is routed around the outer peripheral portion of the second substrate 74, a wiring space is not required around the second substrate 74, which contributes to the miniaturization of the housing 54. Is possible.

Further, since the input line 82 can be wired away from the electronic components on the substrate, the noise received from the electronic components can be reduced.

Then, the signal transfer line 86 is wired through the outer peripheral portion of the second substrate 74. Therefore, the noise generated in the biological signal can be reduced as compared with the case where the input line 82 for the biological signal and the transfer line 86 for signal transfer are wired through the wiring hole 90.

In the present embodiment, as shown in FIG. 6, the input unit 84 is arranged on the left side in the longitudinal direction of the first substrate 72 and in the central portion in the lateral direction, and is on the right side in the longitudinal direction of the first substrate 72. The delivery unit 88 is arranged on the end side in the lateral direction, and the input unit 84 and the delivery unit 88 are arranged at positions apart from each other.

However, the "remote position" is not limited to this, and the "distant position" will be described below by giving an example.

(Second Embodiment)
FIG. 9 is a diagram showing a second embodiment showing an example of a distant position. In the present embodiment, the first substrate 72 is arranged on the inner side I, and the input portion 84 and the delivery portion 88 are provided on the second inner mounting surface 74A of the second substrate 74.

The input unit 84 and the delivery unit 88 are arranged at corners on the long side of the second substrate 74 and are separated from each other, and the separation distance RK at the portion where the input unit 84 and the delivery unit 88 are closest to each other is determined. The input unit 84 and the delivery unit 88 are arranged apart from each other so as to have a length of 5 mm or more.

(Third Embodiment)
FIG. 10 is a diagram showing a third embodiment showing an example of a distant position, and the input unit 84 and the delivery unit 88 are provided on the first inner mounting surface 72A of the first substrate 72.

The input unit 84 and the delivery unit 88 are arranged on the long side side of the first substrate 72 so that the separation distance RK at the portion where the input unit 84 and the delivery unit 88 are closest to each other is 5 mm or more. The input unit 84 and the delivery unit 88 are arranged apart from each other.

(Fourth Embodiment)
FIG. 11 is a diagram showing a fourth embodiment showing an example of a distant position. The input unit 84 is provided on the first inner mounting surface 72A of the first board 72, and the delivery unit 88 is provided on the second inner mounting surface 74A of the second board 74.

The input unit 84 is arranged on the long side side of the first substrate 72, and is arranged on the right corner portion on the right side in the drawing. The delivery portion 88 is arranged on the long side side of the second substrate 74, and is arranged on the left corner portion on the left side in the drawing. In a state where the first substrate 72 and the second substrate 74 are arranged so as to be overlapped with each other, the input unit 84 and the receiving unit 84 and the receiving unit 84 receive so that the separation distance RK at the portion where the input unit 84 and the delivery unit 88 are closest to each other is 5 mm or more. It is arranged apart from Watanabe 88.

Further, in the present embodiment, the input unit 84 and the delivery unit 88 are arranged further apart by the distance from the first inner mounting surface 72A of the first board 72 to the second inner mounting surface 74A of the second board 74. There is.

(Fifth Embodiment)
FIG. 12 is a diagram showing a fifth embodiment showing an example of a distant position. The input unit 84 is provided on the first inner mounting surface 72A of the first board 72, and the delivery unit 88 is provided on the second inner mounting surface 74A of the second board 74.

The input unit 84 is arranged at the lower left corner of the first substrate 72 in the drawing, and the delivery unit 88 is arranged at the upper left corner of the second substrate 74 in the drawing. As a result, even when the first substrate 72 and the second substrate 74 are arranged in an overlapping manner, the input unit 84 and the delivery unit 88 are not close to each other, and the input unit 84 and the delivery unit 88 are arranged apart from each other. ing.

Further, in the present embodiment, the input unit 84 and the delivery unit 88 are arranged further apart by the distance from the first inner mounting surface 72A of the first board 72 to the second inner mounting surface 74A of the second board 74. There is.

(Sixth Embodiment)
FIG. 13 is a diagram showing a sixth embodiment showing an example of a distant position. In the present embodiment, the first substrate 72 is arranged on the inner side I, and the input portion 84 and the delivery portion 88 are provided on the first inner mounting surface 72A of the first substrate 72.

The input unit 84 and the delivery unit 88 are arranged at positions of peripheral edges on different sides of the first substrate 72 formed in a rectangular shape.

That is, the input unit 84 is arranged on the long side side of the first substrate 72, and the delivery unit 88 is arranged on the short side side of the first substrate 72. Specifically, the input unit 84 is arranged in the upper left corner of the drawing of the first substrate 72, and the delivery unit 88 is arranged in the lower left corner of the lower left of the drawing of the first substrate 72. There is. As a result, the input unit 84 and the delivery unit 88 are arranged apart from each other.

(Seventh Embodiment)
FIG. 14 is a diagram showing a seventh embodiment showing an example of a distant position. In the present embodiment, the first substrate 72 is arranged on the inner side I, and the input portion 84 and the delivery portion 88 are provided on the first inner mounting surface 72A of the first substrate 72.

The input unit 84 is arranged at the upper left corner of the drawing of the first substrate 72, and the delivery unit 88 is arranged on the right side of the input unit 84. The pads P constituting the input unit 84 and the delivery unit 88 are arranged with a constant pitch P1, and the constant pitch P1 indicating the distance from the center of the adjacent pads P to the center is set to 1.5 mm as an example. ing.

A space of 1 pitch or more is provided between the pad P of the input unit 84 and the pad P of the delivery unit 88 adjacent to the pad P, and both pads P and P are separated by a separation pitch P2 of 2 pitches or more. Is arranged. As a result, the input unit 84 and the delivery unit 88 are arranged apart from each other.

The distance K between the edges of adjacent pads P is preferably 0.6 mm or more. Further, it is desirable that the width YH of the pad P is 1 mm or more. The length N of the pad P is preferably 1.6 mm or more. From these, it is desirable that the separation pitch P2 between the adjacent pads P and P is 1.6 mm or more.

(Eighth embodiment)
FIG. 15 is a diagram showing an eighth embodiment showing an example of a distant position. In the present embodiment, the first substrate 72 is arranged on the inner side I, and the input portion 84 and the delivery portion 88 are provided on the first inner mounting surface 72A of the first substrate 72.

The input unit 84 is arranged at the upper left corner of the drawing of the first substrate 72, and the delivery unit 88 is arranged on the right side of the input unit 84. An electronic component 100 is arranged between the pad P forming the input unit 84 and the pad P forming the delivery unit 88. Examples of the electronic component 100 include a chip component, and a chip resistor is arranged between the input unit 84 and the delivery unit 88 as an example of the chip component. As a result, the input unit 84 and the delivery unit 88 are arranged apart from each other.

(Ninth Embodiment)
FIG. 16 is a diagram showing a ninth embodiment showing an example of a distant position, and the input unit 84 and the delivery unit 88 are provided on the first inner mounting surface 72A of the first substrate 72 (first substrate). Only 72 is shown).

The first substrate 72 is formed in a circular shape, and the input portion 84 and the delivery portion 88 are provided on the peripheral edge portion of the first substrate 72. The input portion 84 and the delivery portion 88 provided on the peripheral edge portion are arranged at positions deviated from the center C of the first substrate 72 by a certain angle α or more, and this constant angle α is 30 degrees as an example. Has been done.

As a result, the first straight line 102 connecting the center C and the edge of the pad P of the input unit 84 on the delivery portion 88 side, and the second straight line 104 connecting the center C and the edge of the pad P of the delivery portion 88 on the input portion 84 side. The angle formed by the two is 30 degrees or more, and the input unit 84 and the delivery unit 88 are arranged apart from each other.

(10th Embodiment)
FIG. 17 is a diagram showing a tenth embodiment showing an example of a distant position, and the input unit 84 and the delivery unit 88 are provided on the first inner mounting surface 72A of the first substrate 72 (first substrate). Only 72 is shown).

The first substrate 72 is formed in a polygonal shape, and the first substrate 72 is formed in a hexagonal shape as an example. The input unit 84 and the delivery unit 88 are arranged at diagonal positions of the first substrate 72, so that the input unit 84 and the delivery unit 88 are arranged apart from each other.

In the first embodiment, as shown in FIG. 7, the first integrated circuit 92 is arranged on the first outer mounting surface 72B, and the second integrated circuit 94 is arranged on the first inner mounting surface 72A. Although the case where the substrate 72 is arranged outside O from the second substrate 74 has been described, the present invention is not limited to this.

(Eleventh Embodiment)
For example, as shown in the eleventh embodiment of FIG. 18, the first board in which the first integrated circuit 92 is arranged on the first outer mounting surface 72B and the second integrated circuit 94 is arranged on the first inner mounting surface 72A. 72 may be arranged inside I from the second substrate 74.

(Action and effect)
Also in this embodiment, it is possible to obtain the same effects as those in the first embodiment with respect to the same or equivalent parts as those in the first embodiment.

Further, in the first embodiment, as shown in FIG. 7, the first integrated circuit 92 is arranged on the first outer mounting surface 72B of the first board 72, and the first integrated circuit 92 is placed on the first inner mounting surface 72A of the first board 72. (Ii) The case where the integrated circuit 94 is arranged has been described, but the present invention is not limited to this.

(Twelfth Embodiment)
For example, as shown in the twelfth embodiment of FIG. 19, the first integrated circuit 92 and the second integrated circuit 94 may be arranged on different substrates.

That is, in the present embodiment, the first integrated circuit 92 is arranged on the first inner mounting surface 72A of the first board 72, and the second integrated circuit 94 is arranged on the second outer mounting surface 74B of the second board 74. ing.

(Action and effect)
Also in this embodiment, it is possible to obtain the same effects as those in the first embodiment with respect to the same or equivalent parts as those in the first embodiment.

Further, in the present embodiment, the first integrated circuit 92 and the second integrated circuit 94 are provided on different substrates.

Therefore, the wiring pattern to the first integrated circuit 92 and the wiring pattern to the second integrated circuit 94 are separated from each other as compared with the case where the first integrated circuit 92 and the second integrated circuit 94 are provided on the same substrate. Can be placed. This makes it possible to suppress the influence of the delivery signal on the biological signal.

(13th Embodiment)
Further, as shown in the thirteenth embodiment of FIG. 20, the first integrated circuit 92 is provided on the first outer mounting surface 72B of the first board 72, and the second integrated circuit 92 is provided on the second inner mounting surface 74A of the second board 74. A circuit 94 may be provided.

FIG. 21 is a cross-sectional view showing the substrates 72 and 74 provided with the integrated circuits 92 and 94. A shield layer 110 is provided between the first outer mounting surface 72B provided with the first integrated circuit 92 and the second inner mounting surface 74A provided with the second integrated circuit 94. The shield layer 110 is formed on at least one of the substrate provided with the first integrated circuit 92 and the substrate provided with the second integrated circuit 94.

Specifically, the first substrate 72 is composed of a first outer mounting surface 72B, a first inner mounting surface 72A, and a multilayer board in which two layers of wiring layers 112 are formed in a board having an insulating property. There is.

Further, the second substrate 74 is composed of a second outer mounting surface 74B, a second inner mounting surface 74A, and a multilayer board in which a wiring layer 114 is formed in a board having an insulating property. In the second substrate 74, a metal shield layer 110 (GND shield plane) covers the entire area between the second inner mounting surface 74A provided with the second integrated circuit 94 and the wiring layer 114 in the substrate. It is formed across and the shield layer 110 is grounded to the GND line.

As a result, the first outer mounting surface 72B provided with the first integrated circuit 92 and the second inner mounting surface 74A provided with the second integrated circuit 94 can be electromagnetically separated by the shield layer 110.

(Action and effect)
Also in this embodiment, it is possible to obtain the same effects as those in the first embodiment and the twelfth embodiment with respect to the same or equivalent parts as those in the first embodiment and the twelfth embodiment.

Further, in the present embodiment, the first integrated circuit 92 and the second integrated circuit 94 can be arranged apart from each other as compared with the twelfth embodiment. This makes it possible to suppress the influence of the signals handled by both integrated circuits 92 and 94.

Further, in the second substrate 74, a metal shield layer 110 is formed between the second inner mounting surface 74A provided with the second integrated circuit 94 and the wiring layer 114 in the substrate. Therefore, as compared with the case where the shield layer 110 is not provided, it is possible to suppress the influence of the input / output signal to the second integrated circuit 94 on the biological signal processed by the first integrated circuit 92.

10 Biometric information measuring device 54 Housing 56 Cylindrical part 58 Driver 62 Penetration member 72 First board 72A First inner mounting surface 72B First outer mounting surface 74 Second board 74A Second inner mounting surface 74B Second outer mounting surface 78 1 Reception unit 80 2nd reception unit 84 Input unit 88 Delivery unit 90 Wiring hole 92 1st integrated circuit 94 2nd integrated circuit 98 Shield layer I Inside O Outside

Claims (9)

The first substrate on which the circuit that processes the input biological signal is formed,
A second substrate, which is arranged along the first substrate at a portion separated in the plate thickness direction of the first substrate, is provided with a reception unit for exchanging signals with the first substrate and receiving a mechanical load. With the board
Biological information measuring device equipped with. The biomedical information measuring device according to claim 1, wherein an input unit to which an input line for inputting a biological signal is connected and a delivery unit to which a signal transfer line is connected are arranged at a distant position. The biomedical information measuring device according to claim 1 or 2, wherein the first integrated circuit that processes the biological signal and the second integrated circuit that processes the signal to be passed are provided on different mounting surfaces. The biometric information measuring device according to claim 3, wherein the first integrated circuit and the second integrated circuit are provided separately on one surface and the other surface of the same substrate. The biometric information measuring apparatus according to claim 4, wherein a shield layer is formed between the mounting surface provided with the first integrated circuit and the mounting surface provided with the second integrated circuit. The biometric information measuring device according to claim 3, wherein the first integrated circuit and the second integrated circuit are provided on different substrates. There is a shield layer arranged between the mounting surface on which the first integrated circuit is provided and the mounting surface on which the second integrated circuit is provided.
The biometric information measuring device according to claim 6, wherein the shield layer is formed on at least one of a substrate provided with the first integrated circuit and a substrate provided with the second integrated circuit. The biomedical information measuring device according to any one of claims 2 to 7, wherein a wiring hole through which an input line for inputting a biological signal passes is formed on the second substrate. The biometric information measuring device according to claim 8, wherein a signal transfer line is wired through the outer peripheral portion of the second substrate.