JPH0375065A - Human body mounting type radio receiver device - Google Patents

Abstract

PURPOSE:To prevent deterioration of transmission reliability by providing a receiving loop antenna in a casing while a terminal, brought into electrical contact with the human body and connected to a reception input part, in a surface of the casing with this terminal concurrently serving for an electrode which gives an electric stimulus to the human body. CONSTITUTION:A loop antenna 1 is provided in the inside of a casing K or in its surface, and a receiving circuit 2, data discriminating part 3, signal processing part 4, high voltage generating part 5, power supply part 6, etc., are provided. While an electrode E2 for giving an electric stimulus to the human body is connected to a reception input part 7, and a signal, received from the loop antenna 1, is input to the receiving circuit 2 via the reception input part 7. In this way, a radio wave (1) received by the loop antenna 1 and a radio wave (2) received via the human body M are obtained. Accordingly, when these radio waves are coupled (synthesized) by the reception input part 7, a signal level is increased larger than the received signal obtained only by the loop antenna 1, and receiving sensitivity can be improved. While because both the radio waves are different in a transmission route, a reception difficult direction is reduced with directivity compensating each other.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a body-worn wireless device that receives a wireless signal and provides necessary electrical stimulation to a user based on data included in the received wireless signal. The present invention relates to a receiving device.

[Prior Art] A personal paging device (commonly known as a pager) is conventionally known as a body-worn wireless receiving device. Generally, this type of device is used in the form shown in FIG. User M a
, Mb are radio receiving devices Ra, respectively.

I carry Rh. Radio waves a and b emitted from base station B are received by receivers Ra and Rb. Each receiving device Ra, Rb extracts ID code information and control information from the data included in the received radio signal, and transmits the information to the user by sound, vibration, text, etc.

As another means of transmitting information to the user, as shown in FIG. , stimulation type i E I , E 2 By applying a high voltage between them, there is a means for electrically stimulating the human body M and giving a notification.A receiving device that electrically stimulates the human body in this way. can transmit information to the human body even in environments with high noise and vibration levels. Furthermore, with the same configuration, it is possible to realize a low-frequency treatment device that is remotely controlled by wireless signals.

FIG. 5 is a block diagram showing the internal configuration of a wireless receiving device that provides electrical stimulation to the human body. A radio signal received by the loop antenna 1 is amplified and demodulated by the receiving circuit 2, data is extracted by the data identifying section 3, and this data is given to the signal processing section 4. The above data includes the repetition period when stimulating the human body M, the strength of the stimulation (
Information such as applied voltage is included. The signal processing section 4 creates a stimulation signal to be applied to the human body M based on the above data, and controls the generation of high voltage by the high voltage generation section 5. The power supply section 6 is made up of a battery or the like, and supplies operating voltage to each section. Stimulation electrodes E, , E are attached to the surface of the housing of this receiving device, and these electrodes E + ,
E 2 is used in close contact with the human body M. High voltage generator 5
The high voltage generated by this is applied between the electrodes E, E2, thereby giving the human body M the necessary electrical stimulation.

[Problems to be Solved by the Invention] In the conventional example described above, the loop antenna 1 is formed inside or on the surface of the housing and connected to the receiving circuit 2. However, when the receiving device is placed in close contact with the human body M, or when the receiving device is made small, it is strongly influenced by the human body M, and the gain of the antenna decreases, and the antenna orientation changes depending on the part where the receiving device is attached. The problem was that the characteristics changed drastically, making it difficult to receive signals in some directions.

The present invention has been made in view of these points, and its purpose is to prevent deterioration of transmission reliability in a body-worn wireless receiving device.

[Means for Solving the Problems] In the present invention, in order to solve the above problems, the first
As shown in the figure, a wireless receiving device used by being attached to a human body M has a receiving loop antenna 1 inside a housing I or on the surface of the housing, and has a receiving input section that is in electrical contact with the human body M on the housing surface. The device is characterized in that it has a terminal connected to the terminal 7, and the terminal also serves as an electrode E2 for applying electrical stimulation to the human body M.

Here, it is preferable that at least one of the signal from the loop antenna 1 and the signal from the terminal is transmitted to the receiving circuit.

[Operation] According to the present invention, the received signal from the loop antenna 1,
Since the received signal from the terminal that is in electrical contact with the human body M is obtained, the level of the received signal can be increased by combining (synthesizing) the two or selecting one of them, and the directivity can be increased. It can be made less susceptible.

[Example code] FIG. 1 is a block diagram of one embodiment of the present invention.

Similar to the conventional example shown in FIG.
, a signal processing section 4, a high voltage generation section 5, a power supply section 6, and the like. The difference from the conventional example is that the electrode E2 for applying electrical stimulation to the human body is connected to the reception input section 7. Further, the received signal from the loop antenna 1 is input to the receiving circuit 2 via the receiving input section 7. As a result, in this device, as shown in FIG. 2, the loop antenna 1
The radio waves received via the human body M and the radio waves received via the human body M are obtained. In other words, since the human body M has an effect as an antenna, the reception signal due to the antenna effect of the human body M can be obtained by the electrode E2 being in contact with the human body M.

In this way, in addition to being able to obtain a received signal from the loop antenna 1, it is also possible to obtain a received signal via the human body M, so if these are combined (combined) at the receiving input section 7, the loop antenna 1 alone can receive the received signal. The signal level becomes higher than the received signal obtained, and reception sensitivity can be improved. Furthermore, since the propagation paths of both radio waves are generally different, the directivities complement each other, resulting in the effect that there are fewer directions in which reception is difficult. Note that the electrode E2 that provides electrical stimulation to the human body M may constitute an antenna by itself. In this case, the same effect as described above can be expected when worn on the human body, and even when not attached to the human body, the electrode E2 may constitute an antenna by itself. We can expect an antenna effect due to .

Furthermore, in the reception input section 7, not only can the two received signals be combined (combined), but one of them may be selected according to a control signal from the signal processing section 4 and transmitted to the reception circuit 2. . Specifically, only the first received signal is sent to the receiving circuit 2.
A state in which only the second received signal is transmitted to the receiving circuit 2, a state in which both received signals are combined (combined) and transmitted to the receiving circuit 2 can be freely switched by the signal processing unit 4, The signal processing unit 4 may select the state in which the receiving circuit 2 has the best reception state.

Note that it goes without saying that the receiving device of the present invention can be used for both purposes of notifying information to the human body and for medical purposes.

[Effects of the Invention] According to the present invention, in a body-worn wireless receiving device,
Since the terminal that comes into contact with the human body is connected to the reception input section, wireless signals can be received from the receiving path via the loop antenna and the receiving path via the terminal that comes into contact with the human body, which has the effect of improving transmission reliability. be. Further, since the terminal that contacts the human body also serves as an electrode that provides electrical stimulation to the human body, there is no need to add a new terminal, and there is an advantage that the configuration is simplified.

In addition, the signal from the loop antenna and the signal from the terminal are
If at least one is configured to be transmitted to the receiving circuit, there will be a state in which only the signal from the loop antenna is transmitted to the receiving circuit, and a state in which only the signal from the terminal that contacts the human body is transmitted to the receiving circuit. This provides the advantage that the optimal state can be selected from among the states in which both signals are combined and transmitted to the receiving circuit.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of the same operation as above, FIG. 3 is a schematic configuration diagram of a conventional example, FIG. 4 is a schematic configuration diagram of another conventional example, and FIG. The figure is a block diagram same as above. 1 is a loop antenna, 2 is a receiving circuit, 7 is a receiving input section,
E + and E 2 are electrodes.

Claims (2)

[Claims] (1) A wireless receiving device used by being attached to the human body, which has a receiving loop antenna inside the housing or on the surface of the housing, and has a terminal on the surface of the housing that is in electrical contact with the human body and connected to the reception input section, A human body-worn wireless receiving device characterized in that the terminal also serves as an electrode for applying electrical stimulation to the human body. (2) The signal from the loop antenna and the signal from the terminal are
2. The body-worn wireless receiving device according to claim 1, wherein at least one of the signals is transmitted to a receiving circuit.