Patient Monitor

Abstract

To provide a biological information monitor capable of mitigating preprocessing of monitoring by an administrator.SOLUTION: A central monitor includes: a demodulation unit having a plurality of demodulation circuits for individually demodulating a plurality of pieces of biological information transmitted from a plurality of biological information acquisition terminals in a plurality of different radio frequency channels, the plurality of demodulation circuits demodulating signals in the plurality of radio frequency channels, respectively; an electric field intensity measurement unit for measuring electric field intensity in a medical telemeter band including at least all of target frequency bands of the radio frequency channels of demodulation of the demodulation unit; a display unit; and a control unit. The control unit performs channel registration by allocating a radio frequency channel on the basis of the electric field intensity measured by the electric field intensity measurement unit, displays a bed use screen for patient bed use processing on a display unit when the channel registration is performed, and associates the radio frequency channel of the channel registration with patient information input using the displayed bed use screen.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a physiological information monitor that receives physiological information transmitted wirelessly, for example, a central monitor. [Background technology]

[0002] Conventionally, a central monitor installed in a nurse's station at a medical institution is known as a vital sign monitor for monitoring the conditions of multiple patients. The central monitor receives vital signs (e.g., electrocardiogram, blood pressure, arterial blood oxygen saturation, etc.) of each patient from a bedside monitor installed at the bedside of each patient in an intensive care unit, hospital room, etc., and displays the information on a screen (see, for example, Patent Document 1).

[0003] In recent years, medical telemetry systems that use radio waves to monitor patients' vital signs have become widespread. Medical telemetry systems use radio waves to monitor vital signs such as electrocardiograms from a distance, making them an indispensable tool for helping to improve medical services and reduce the burden on medical staff.

[0004] A medical telemetry system is composed of a biological information acquisition terminal such as a telemetry transmitter or a bedside monitor, and a central monitor that receives and demodulates the biological information wirelessly transmitted from the biological information acquisition terminal (see, for example, Patent Document 2).

[0005] The central monitor demodulates the vital sign information wirelessly transmitted from the telemeter transmitter and displays the demodulated vital sign information on a display unit.

[0006] Here, a dedicated radio frequency channel (transmission frequency) is assigned in advance to each biological information acquisition terminal. The biological information acquisition terminal wirelessly transmits biological information detected from the patient using the assigned radio frequency channel. The central monitor obtains the biological information by demodulating the signal of the radio frequency channel transmitted from the biological information acquisition terminal. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2005-124903 A [Patent Document 2] JP 2003-010138 A Summary of the Invention [Problem to be solved by the invention]

[0008] In order for the central monitor to demodulate the signal of the radio frequency channel (hereinafter sometimes simply called the channel) transmitted from the biometric information acquisition terminal, it is necessary to register the receiving channel of the central monitor so that it matches the transmitting channel of the biometric information acquisition terminal. This registration of the receiving channel is performed by the administrator manually entering it or by using a barcode reader, etc.

[0009] In the case of manual input, the administrator registers the channel by setting the channel of the central monitor to match the channel displayed on the label or LCD screen of the biometric information acquisition terminal. At this time, the administrator sets the channel using operation keys (e.g., numeric keys) provided on the central monitor.

[0010] When manually setting the receiving channel of the central monitor, it is generally necessary to input a four-digit number. If an input error results in an incorrect channel setting, the central monitor will not be able to receive the vital signs transmitted by the intended vital signs acquisition terminal, resulting in a mix-up in which the vital signs of the intended patient cannot be monitored or the vital signs of an unintended patient are monitored.

[0011] This meant that the administrator in charge of the telemeter system in the hospital had to perform the task of setting the channels correctly for many vital sign acquisition terminals, which was time-consuming.In particular, large hospitals have more than 100 vital sign acquisition terminals, so it is very cumbersome to register the receiving channels of the central monitor to correspond to each vital sign acquisition terminal.

[0012] In addition to registering the channel, the administrator must also process the patient's admission before starting monitoring. The admission process is carried out by the administrator displaying the admission screen on the central monitor and inputting the patient's name and other information while viewing the screen.

[0013] Therefore, before starting monitoring of the patient's vital signs, the administrator had to perform preprocessing such as at least launching the channel registration screen and admission screen and entering the appropriate information, which was a significant burden.

[0014] The present invention has been made in consideration of the above points, and provides a biological information monitor that can reduce the pre-processing required for monitoring by an administrator. [Means for solving the problem]

[0015] One embodiment of the biological information monitor of the present invention comprises: a demodulation unit including a plurality of demodulation circuits for demodulating a plurality of pieces of biometric information transmitted from a plurality of biometric information acquisition terminals via a plurality of different radio frequency channels, each of the plurality of demodulation circuits demodulating signals of the plurality of radio frequency channels; a field strength measuring unit for measuring a field strength of a medical telemetry band including at least the entire frequency band of the radio frequency channel demodulated by the demodulation unit; A display unit; A control unit; Equipped with The control unit is assigning the radio frequency channel based on the electric field strength measured by the electric field strength measurement unit and performing channel registration; and, When the channel is registered, an admission screen for performing admission processing of the patient is displayed on the display unit; and, The radio frequency channel on which the channel registration has been performed is associated with the patient information input using the displayed admission screen. Effect of the Invention

[0016] According to the present invention, the administrator does not need to register channels and launch the admission screen, so pre-processing for monitoring is reduced. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a biological information monitoring system to which a central monitor according to an embodiment is applied. [Diagram 2] FIG. 1 is a block diagram showing a configuration of a main part of a central monitor according to an embodiment of the present invention; [Diagram 3] Block diagram showing the configuration of the receiving section [Figure 4] An example of biological information displayed on a central monitor [Diagram 5] A diagram showing an example of a field strength display screen on a central monitor [Figure 6] A diagram showing an example of the bed entry / exit screen [Figure 7] A diagram showing an example of a conventional channel registration screen. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0019] <1> System Overview Fig. 1 is a diagram showing a schematic configuration of a biological information monitoring system to which a central monitor according to the present embodiment is applied. A biological information monitoring system 10 in Fig. 1 is installed, for example, in a hospital.

[0020] A central monitor 100 is provided at the nurse's station, and the central monitor 100 receives, via antennas AN1, AN2-1, AN2-2, and AN2-3, the biometric information of each patient wirelessly transmitted from biometric information acquisition terminals such as bedside monitors 20 (20-1 to 20-n) or telemeter transmitters 30-1 to 30-m.

[0021] Antennas AN1, AN2-1, AN2-2, and AN2-3 are attached directly to the central monitor 100 or connected to the central monitor 100 by cables. Specifically, antenna AN1 is attached directly to the central monitor 100, and antenna AN2 (AN2-1 to AN2-3) is connected to the central monitor 100 via a cable 400. Antenna AN2 is disposed, for example, in the ceiling of a hospital corridor.

[0022] The antenna AN2 may be configured using a so-called antenna system or a leaky coaxial cable system. The antenna system uses a whip antenna or the like as an antenna, and the antennas AN2-1 to AN2-3 are connected by wire. The leaky coaxial cable system uses a leaky coaxial cable as the antennas AN2-1 to AN2-3. The antennas AN1 and AN2 may be of any system as long as they comply with the standards for specific low-power radio. Furthermore, the number of antennas is not limited to the example in FIG. 1.

[0023] In practice, the biological information wirelessly transmitted from the bedside monitor 20 and the telemeter transmitter 30 (i.e., the biological information acquisition terminal) is first received by the antenna AN1 or AN2. In the example of Fig. 1, the biological information transmitted from the telemeter transmitter 30-m is received by the antenna AN1, and the biological information transmitted from the bedside monitors 20-1, 20-n and the telemeter transmitter 30-1 is received by the wired antenna AN2.

[0024] In this manner, vital signs wirelessly transmitted from medical terminals such as the bedside monitor 20 and the telemeter transmitter 30 are received and collected by the central monitor 100 and displayed on the central monitor 100 .

[0025] <2> Main components of the central monitor FIG. 2 is a block diagram showing a configuration of a main part of the central monitor 100 according to this embodiment.

[0026] The central monitor 100 inputs signals received by antennas AN1 and AN2 to the receiving unit 200. The receiving unit 200 demodulates the modulated biological information by performing a predetermined wireless processing on the input signal. The receiving unit 200 also has a function of measuring the electric field strength of radio waves in the medical telemeter frequency band (420 MHz to 450 MHz). The detailed configuration of the receiving unit 200 will be described later.

[0027] Here, we will briefly explain the frequency band for medical telemeters. According to the "Operational Regulations for Low-Power Medical Telemeters" established by the Japan Electronics and Information Technology Industries Association (JEITA), 420 to 450 MHz is specified as the frequency band to be used for medical telemeters. Furthermore, six frequency bands (which may be called bands) 1 to 6 are allocated in the range of 420 to 450 MHz. Each of the frequency bands 1 to 6 can be allocated 40, 80, or 120 channels (which may be called "floors" or "biometric information acquisition terminals"). Incidentally, the interval between each channel is 12.5 kHz.

[0028] The biological information demodulated by the receiving unit 101 is input to the biological information analysis unit 110. The biological information analysis unit 110 forms a biological information waveform and calculates maximum values, minimum values, average values, and the like from the biological information.

[0029] The output of the biological information analysis unit 110 is input to the display control unit 120 and the alarm control unit 130. The display control unit 120 switches the display based on an operation signal from the operation unit 180. The display control unit 120 displays biological information such as an electrocardiogram, SpO2, and blood pressure on the display unit 140. Furthermore, when an alarm output instruction signal is input from the alarm control unit 130, the display control unit 120 displays an alarm on the display unit 140. The alarm output instruction signal from the alarm control unit 130 is also input to an alarm indicator 150 consisting of an LED (Light Emitting Diode), a speaker, etc., and the alarm is also output by light or sound.

[0030] Meanwhile, information on the electric field strength of the radio waves measured by the receiving unit 200 is output to the display control unit 120. The electric field strength information here is, for example, information in which the electric field strength is represented by a two-dimensional graph with the horizontal axis representing frequency and the vertical axis representing power (or voltage). This two-dimensional graph is displayed on the display unit 140 by the display control unit 120.

[0031] The central monitor 100 also has a control unit 170 , an operation unit 180 , and a barcode reader 190 .

[0032] As a pre-processing before sensing of the biometric information, the control unit 170 assigns and links each biometric information acquisition terminal to a carrier frequency (which may be called a radio frequency channel) based on the biometric information acquisition terminal identification information input from the operation unit 180 or the barcode reader 190, and outputs frequency assignment information to the receiving unit 200. Note that the control by the control unit 170 will be described in detail later.

[0033] <3> Receiving section configuration FIG. 3 is a block diagram showing the configuration of the receiving unit 200. As shown in FIG.

[0034] The receiver 200 inputs signals received by the antennas AN1 and AN2 to a distributor 230 via a band pass filter (BPF) 210 and an amplifier (AMP) 220.

[0035] The distributor 230 outputs the input received signal to the demodulator 240 and the field strength measurement unit 250. Here, the distributor 230 may select, for example, either the signal of the antenna AN1 or the signal of the antenna AN2 and output it to the demodulator 240 and the field strength measurement unit 250, or may output a combination of the signals of the antennas AN1 and AN2 to the demodulator 240 and the field strength measurement unit 250.

[0036] The distribution of distributor 230 is controlled, for example, by a user operating operation unit 180. As a result, for example, when a user wants to know the field strength based on the received signal of antenna AN1, distributor 230 outputs the received signal of antenna AN1 to field strength measurement unit 250.

[0037] Furthermore, the distributor 230 may select which of the received signals from antennas A1 and AN2 to distribute to each of the demodulation circuits 1 to 12 included in the demodulation unit 240. For example, in the case where the telemeter transmitter 30-1 in Fig. 1 is assigned to the demodulation circuit 1, the signal from the telemeter transmitter 30-1 should be larger at antenna AN2 than at antenna AN1, so the distributor 230 may distribute the received signal from antenna AN2 to the demodulation circuit 1.

[0038] The demodulation unit 240 has demodulation circuits (which may be called "receiving modules") equal to the number of beds (which may be called the "number of channels" or the "number of biometric information acquisition terminals"). In the example of FIG. 3, it has demodulation circuits 1 to 12 for 12 beds. Specifically, each of the demodulation circuits 1 to 12 demodulates the biometric information by multiplying the input signal by a different carrier frequency. For example, demodulation circuit 1 multiplies by carrier frequency 1, demodulation circuit 2 multiplies by carrier frequency 2, ... and demodulation circuit 12 multiplies by carrier frequency 12.

[0039] The biological information of each bed (each biological information acquisition terminal) demodulated by the demodulation unit 240 is converted by the conversion circuit 270 into data suitable for analysis by the biological information analysis unit 110 (FIG. 2).

[0040] In addition to this configuration, the receiving unit 200 of the central monitor 100 of this embodiment has a field strength measuring unit 250 in addition to the demodulating unit 240 that demodulates the biological information. The field strength measuring unit 250 measures the field strength of the medical telemetry band that includes at least all of the demodulation frequency bands demodulated by the demodulating unit 240.

[0041] The electric field strength measuring unit 250 of this embodiment measures the electric field strength in the medical telemeter band by a sweep method. Since the electric field strength measurement using the sweep method is a known technique, it will be briefly described here. The electric field strength measuring unit 250 converts the input signal to an IF (intermediate frequency) using a mixer and a local oscillator. At this time, the signal is converted to an IF while automatically sweeping the frequency of the local oscillator, and the power value that has passed through a narrowband IF filter is output as electric field strength information. Note that the electric field strength measuring unit 250 may measure the electric field strength information by an FFT method instead of the sweep method.

[0042] By measuring and displaying the field strength of radio waves in the medical telemeter band using the field strength measuring unit 250, the user can grasp the radio wave environment of the channel to which the biological information acquisition terminal is assigned.

[0043] The operations of distributor 230, demodulator 240, and field intensity measuring section 250 are controlled by wireless control section 260. For example, wireless control section 260 controls which of demodulator circuits 1 to 12 to operate, based on frequency allocation information from control section 170. For example, when carrier frequency 1 is assigned to bedside monitor 20-1, carrier frequency 2 is assigned to bedside monitor 20-n, carrier frequency 7 is assigned to telemeter transmitter 30-1, and carrier frequency 9 is assigned to telemeter transmitter 30-m, demodulator circuits 1, 2, 7, and 9 are operated.

[0044] Moreover, the wireless control unit 260 assigns floors (which may also be called "channels" or "biometric information acquisition terminals") to the demodulation circuits 1-12 by setting carrier frequencies 1-12 for the demodulation circuits 1-12.

[0045] <4> Display example Fig. 4 is a diagram showing an example of biological information displayed on the display unit 140 of the central monitor 100. In the example of Fig. 4, biological information for eight beds is displayed, but according to the configuration of Fig. 3 described above, biological information for up to 12 beds can be displayed in relation to wireless reception.

[0046] FIG. 5 is a diagram showing an example of a received electric field strength display image displayed on the display unit 140 of the central monitor 100. As shown in FIG.

[0047] 5, a field strength measurement selection area AR1, a field strength graph area AR2, a band selection area AR3, an antenna selection area AR4, and a scan start position adjustment area AR5 are displayed. In this embodiment, the display unit 140 has a touch panel configuration, and an operation signal corresponding to a touch operation by the user is input to the control unit 170, and various controls are changed according to the operation signal.

[0048] A "spectrum analyzer only" button is displayed in the reception strength measurement selection area AR1. When the "spectrum analyzer only" button is touched, the field strength measurement unit 250 measures the field strength. In addition, buttons RF-01 to RF-12 are displayed in the reception strength measurement selection area AR1. These buttons correspond to demodulation circuits 1 to 12, and when the RF-01 button is touched, for example, the field strength is measured by demodulation circuit 1, and when the RF-02 button is touched, for example, the field strength is measured by demodulation circuit 2.

[0049] That is, the demodulation circuits 1 to 12 have a function of measuring the field strength of the medical telemeter band in the same manner as the field strength measurement unit 250, in addition to the function of demodulating the biological information. That is, in order to demodulate the biological information, a configuration similar to that of the field strength measurement unit 250, such as a mixer and a local oscillator, is necessary, so the demodulation circuits 1 to 12 are also able to measure the field strength using these configurations. However, since the demodulation of the biological information in this embodiment is not performed and the field strength measurement unit 250 is provided exclusively for measuring the field strength, the radio wave state of the frequency band of the medical telemeter can be measured regardless of the monitoring status of the biological information.

[0050] The electric field strength of each channel is displayed in the electric field strength graph area AR2. In the example shown in the figure, of the six bands (1000s, 2000s, 3000s, 4000s, 5000s, and 6000s) that make up the medical telemeter band, the electric field strength of the 2000s band is displayed. The user can determine which band's electric field strength is to be measured and displayed by selecting the desired band in the band selection area AR3. In the example shown in the figure, the electric field strength of 120 channels is displayed in each band.

[0051] The user can select the antenna for which the field strength is to be measured by touching the antenna selection area AR4. For example, when the "Antenna 1" button is touched, the field strength of the signal received by antenna AN1 is measured and displayed, and when the "Antenna 2" button is touched, the field strength of the signal received by antenna AN2 is measured and displayed. Incidentally, instead of selecting any one antenna, it is also possible to select all two or more antennas and measure and display the field strength of the combined received signal.

[0052] The user can adjust the scan start position where the field strength is measured and displayed by touching the scan start position adjustment area AR5. Here, to scan the field strength of all channels in the band, it takes several tens of seconds, for example, depending on the performance of the device. Therefore, if the scan is simply started from the channel with the lowest frequency and the channel of interest is a channel with a high frequency, the user must wait a long time to know the field strength around the channel of interest.

[0053] The user can avoid this inconvenience by touching the scan start position adjustment area AR5. For example, if the channel of interest is channel 2115, the user touches the "110" button in the scan start position adjustment area AR5. As a result, the measurement and display of the electric field strength is scanned starting from channel 2110, allowing the user to quickly find out the electric field strength around the channel of interest, channel 2115.

[0054] <5> Channel registration and admission screen start by control unit 170 As a pre-processing before sensing of biological information, the control unit 170 performs channel registration by allocating radio frequency channels to the demodulation circuits 1 to 12 (FIG. 3) based on the electric field strength measured by the electric field strength measurement unit 250 (FIG. 3).

[0055] Specifically, when registering a new telemeter transmitter with the central monitor 100, the administrator puts the telemeter transmitter into a transmitting state and brings it close to the central monitor 100. Then, the electric field strength measuring unit 250 measures a large electric field strength at a frequency corresponding to the radio frequency channel of the telemeter transmitter.

[0056] The control unit 170 performs channel registration of the demodulation circuits 1-12 corresponding to the radio frequency channel with the strongest field strength among the radio frequency channels measured by the field strength measurement unit 250. Note that it is not necessary to perform channel registration of the demodulation circuits 1-12 corresponding to the radio frequency channel with the strongest field strength, and for example, the channels with the strongest field strength may be selected as candidates, and the channel with the strongest field strength may be registered after removing noise components from among them.

[0057] The control unit 170 may also assign radio frequency channels to the demodulation circuits 1-12, excluding those to which radio frequency channels have already been assigned, based on the electric field strength measured by the electric field strength measurement unit 250, and perform channel registration. For example, when the demodulation circuits 1-6 have already been assigned radio frequency channels (i.e., when the channels have already been registered), it is sufficient to monitor only the electric field strength of the radio frequencies corresponding to the demodulation circuits 7-12, and register the one with the largest electric field strength as a new channel. In this way, the time required for channel registration can be shortened.

[0058] Furthermore, the control unit 170 may determine the validity of the channel registration by performing a check using an error detection code.

[0059] More specifically, a signal including an error detection code is transmitted from a telemeter transmitter for which new channel registration is to be performed. The control unit 170 performs a check using the error detection code on the signal of a channel with a high field strength. If there is an error, the signal is not likely to be a signal from the target telemeter transmitter, but is likely to be, for example, noise, and channel registration is not performed. On the other hand, if the check is OK, it can be determined that the signal is a signal from the target telemeter transmitter. In this way, the reliability of channel registration can be increased.

[0060] Furthermore, when the control unit 170 has registered the channel as described above, it causes the display unit 140 to display an admission screen for carrying out the admission process of the patient. Fig. 6 is an example of the admission screen that is displayed. Strictly speaking, the example in Fig. 6 is an admission / discharge screen. The administrator inputs patient identification information, such as the patient's name, via the operation unit 180 while looking at this admission screen.

[0061] In this way, by displaying the admission screen in synchronization with channel registration, the number of screen switching operations by the administrator is reduced, thereby reducing the burden on the administrator.

[0062] The control unit 170 associates the radio frequency channel for which channel registration has been performed with the patient information entered using the displayed admission screen. This associates each patient with the monitored biological information, and the information is displayed and recorded. The control unit 170 also transmits the patient information, etc. to an electronic medical record system, etc.

[0063] As described above, according to this embodiment, the central monitor 100 has a plurality of demodulation circuits 1 to 12 which demodulate a plurality of pieces of bioinformation transmitted from a plurality of bioinformation acquisition terminals (bedside monitor 20, telemeter transmitter 30) on a plurality of different radio frequency channels, and the plurality of demodulation circuits 1 to 12 each demodulates signals of a plurality of radio frequency channels. The central monitor 100 is provided with a demodulation unit 24, an electric field strength measurement unit 250 which measures the electric field strength of a medical telemeter band including at least all frequency bands of the radio frequency channels demodulated by the demodulation unit 240, a display unit 140, and a control unit 170, and the control unit 170 assigns a radio frequency channel based on the electric field strength measured by the electric field strength measurement unit 250 to perform channel registration, and when the channel registration is performed, causes the display unit 140 to display an admission screen for performing a patient admission process, and links the radio frequency channel on which the channel registration is performed to the patient information input using the admission screen displayed.

[0064] This eliminates the need for the administrator to register channels and launch the admission screen, thereby reducing the pre-processing required for monitoring.

[0065] Conventionally, a channel registration screen as shown in Fig. 7 is displayed on the display unit 140, and the administrator needs to register channels on this screen. In the present embodiment, the administrator does not need to go through the troublesome channel registration process.

[0066] Furthermore, according to this embodiment, the central monitor 100 includes a demodulation unit 240 having a plurality of demodulation circuits 1-12 that demodulate the plurality of pieces of vital signs wirelessly transmitted from a plurality of vital signs acquisition terminals (bedside monitor 20, telemeter transmitter 30), and an electric field strength measurement unit 250 that is provided separately from the demodulation unit 240 and measures the electric field strength of the medical telemeter band that includes at least all frequency bands demodulated by the demodulation unit 240.

[0067] This allows the electric field strength measuring unit 250 to measure the radio wave conditions regardless of the usage status of the demodulation circuits 1 to 12 of the demodulation unit 240, thereby realizing a central monitor 100 that can measure the radio wave conditions regardless of the monitoring status of the vital sign without complicating the system configuration.

[0068] Specifically, the measurement of the electric field strength by the electric field strength measuring section 250 is performed simultaneously with the demodulation of the biological information by the demodulation section 240. This makes it possible to measure the radio wave state without interrupting the monitoring of the biological information.

[0069] Furthermore, according to this embodiment, an amplifier 220 that amplifies signals from antennas AN1 and AN2 is provided before the demodulator 240 and the field strength measurement unit 250, and the demodulator 240 and the field strength measurement unit 250 share the same amplifier 220 (in other words, they input signals from the same amplifier 220). This simplifies the configuration of the part that amplifies signals when viewed as a whole system by sharing the amplifier, as compared with, for example, a system in which a field strength measurement unit is provided outside the central monitor 100 to measure the field strength.

[0070] Furthermore, according to this embodiment, a distributor 230 that distributes signals from antennas AN1 and AN2 is provided before the demodulator 240 and the field strength measurement unit 250, and the demodulator 240 and the field strength measurement unit 250 share the same distributor 230 (in other words, they input signals from the same distributor 220). This simplifies the configuration, since there is no need to provide a separate distributor, as compared to a system in which the field strength measurement unit is provided outside the central monitor 100 to measure the field strength.

[0071] Incidentally, in this embodiment, the distribution of the antenna signal by distributor 230 to demodulation unit 240 and the distribution of the antenna signal to field intensity measurement unit 250 are the same. For example, when the signal of antenna AN1 is distributed to demodulation unit 240, the signal of antenna AN1 is also distributed to field intensity measurement unit 250. This is because the signal of the antenna whose field intensity is to be measured is meaningless unless it is the same as the signal of the antenna to be demodulated.

[0072] The above-described embodiment is merely an example of the embodiment of the present invention, and the technical scope of the present invention should not be interpreted as being limited by the embodiment. In other words, the present invention can be embodied in various forms without departing from the gist or main characteristics of the present invention.

[0073] In the above-described embodiment, the present invention has been described as being applied to a central monitor, but the present invention is not limited to this. In short, the present invention can be widely applied to any biometric information monitor that demodulates and displays multiple pieces of biometric information wirelessly transmitted from multiple biometric information acquisition terminals. [Industrial Applicability]

[0074] The present invention has an effect of reducing the amount of pre-processing required for monitoring by an administrator, and is suitable for use in a central monitor, for example. [Explanation of symbols]

[0075] 10. Biological Information Monitoring System 20(20-1~20-n) Bedside Monitor 30(30-1~30-m) Telemeter transmitter 100 Central Monitor 110 Biometric Analysis Department 120 Display control unit 130 Alarm control section 140 Display section 150 Alarm Indicator 170 Control section 180 Operation section 190 Barcode Reader 200 Receiver 210 Bandpass Filter (BPF) 220 Amplifier (AMP) 230 Distributor 240 Demodulation section 250 Electric field strength measurement unit 260 Radio control unit 270 Conversion circuit AN1, AN2-1, AN2-2, AN2-3 antennas AR1 Field strength measurement selection area AR2 Field Strength Graph Area AR3 Band Selection Area AR4 Antenna Selection Area AR5 Scan start position adjustment area

Claims

1. a demodulation unit including a plurality of demodulation circuits for demodulating a plurality of pieces of biometric information transmitted from a plurality of biometric information acquisition terminals via a plurality of different radio frequency channels, each of the plurality of demodulation circuits demodulating signals of the plurality of radio frequency channels; a field strength measuring unit for measuring a field strength of a medical telemetry band including at least the entire frequency band of the radio frequency channel demodulated by the demodulation unit; A display unit; A control unit; Equipped with The control unit is assigning the radio frequency channel based on the electric field strength measured by the electric field strength measurement unit and performing channel registration; and, When the channel is registered, an admission screen for performing admission processing of the patient is displayed on the display unit; and, Linking the radio frequency channel on which the channel registration has been performed with the patient information input using the displayed admission screen; Vital sign monitor.

2. The control unit is performing channel registration by allocating the radio frequency channel to each of the demodulation circuits, excluding the demodulation circuits to which the radio frequency channel has already been allocated, based on the electric field strength measured by the electric field strength measurement unit; The biological information monitor according to claim 1 .

3. the control unit performs channel registration of a demodulation circuit corresponding to a radio frequency channel having the greatest electric field strength among the electric field strengths of the radio frequency channels measured by the electric field strength measurement unit; 3. The biological information monitor according to claim 1 or 2.

4. The control unit determines the validity of the channel registration by performing a check using an error detection code. The biological information monitor according to any one of claims 1 to 3.

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