KR101033964B1 - blood pressure Receiving - Google Patents

Abstract

The present invention provides a wireless receiving system that can create a sensor of one integrated chip using a semiconductor process, the pressure sensing unit and the wireless transmission unit operating without power, and receive and store the information measured by the sensor. The present invention relates to a wireless blood pressure and pulse wave measuring device for automatically measuring and analyzing blood pressure and pulse wave of users at a predetermined time, and also analyzing a pre-measured information before an emergency occurs to warn of a dangerous situation.

To this end, the present invention includes a pressure sensor for measuring blood pressure and pulse wave, and a wireless sensor for wireless transmission of information detected by the pressure sensor, but an integrated sensor unit formed on one chip by a semiconductor process; A receiver configured to read information from the integrated sensor unit, a CPU for processing various data by controlling the integrated sensor unit, a memory unit storing the blood pressure and pulse wave information, and the measured blood pressure and pulse wave LCD screen for viewing and a wireless receiving system equipped with a speaker so as to sound an alarm in case of emergency.

Pressure Sensors, RFID Transponders, RFID Reader ICs, Wafers, Diaframes

Description

Wireless blood pressure and pulse wave measuring device {blood pressure Receiving}

The present invention relates to a wireless blood pressure and pulse wave measuring apparatus, and more particularly, a pressure sensing unit for measuring blood pressure and pulse wave flowing through a blood vessel by a heart, and a wireless unit for transmitting the measured value detected by the sensing unit to a receiver without power. The present invention relates to a wireless blood pressure and pulse wave measuring apparatus including a sensor integrally manufactured in a semiconductor manufacturing process and a wireless receiving system for converting data transmitted from the sensor to display blood pressure and pulse wave.

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The rapid development of modern science and technology leads to the remarkable economic growth and the improvement of living standard, and the interest in the health of modern people is increasing as the modern diseases such as hyperlipidemia and hypertension are caused by the fast food and high fat food. With the help of medical devices, self-diagnosis and regular health check-ups are carried out in hospitals. Blood pressure, pulse rate and pulse wave are very important factors in diagnosing human health.
Blood pressure is measured to check for hypertension or heart shock, and treatment with blood pressure can prevent blood pressure complications in addition to reducing elevated blood pressure. In addition, to prevent the occurrence of atherosclerosis, it is possible to simultaneously manage and control the risk factors of atherosclerosis, such as diabetes, smoking, hyperlipidemia.
Pulse wave is used as an important factor in diagnosing the health status of the cardiovascular system. In oriental medicine, the oriental medical doctor diagnoses the patient's health status by checking the pulse wave through the finger pulse and the diagnostic equipment using electronics technology.
Until now, even though it is necessary to continuously measure the blood pressure and pulse wave of patients, there is no system for monitoring constantly, and in the case of emergency patients, they are sent to the hospital to measure the pressure and pulse wave to miss the timing of first aid. Occasionally it has occurred.
Recently, a digital blood pressure and pulse measuring device which can measure blood pressure and pulse easily in a general home or work place, etc., not a hospital, is used, and such a digital blood pressure and pulse measuring device has a convenient advantage over a manual blood pressure monitor handled by an expert. In addition, the digital blood pressure and pulse measuring device is not able to measure the blood pressure properly when the patient moves during the measurement, the blood pressure measurement is not made correctly in the case of an irregular heartbeat.
Therefore, in large hospitals and most general hospitals, the blood pressure of a large number of patients is often measured using a blood pressure and pulse meter, which nurses measure by applying pressure manually.

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As described above, the method of measuring the blood pressure by manually applying pressure of the nurses, which is expert, cannot be used by the general person alone, and the measurement is read only by the eye, so that the recording, storage and utilization of data are insufficient, even in the case of a digital measuring instrument, Since the pressure pad is attached to the arm and the pressure is applied from the outside to make a comparative measurement, an accurate measurement is not made.
In addition, only the blood pressure can be measured, there is a problem that can not check the heart rate of the heart and can not measure the minute changes in the heart rate.
An object of the present invention is to provide a wireless blood pressure and pulse wave measuring apparatus capable of easily and safely performing a blood pressure test without causing inconvenience to a user.
In addition, it is possible to constantly monitor the blood pressure and pulse wave of critically ill patients need to manage continuously, to provide a convenient and effective treatment service, and to provide a wireless blood pressure and pulse wave measuring device that can efficiently respond in case of emergency It is done.

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In order to achieve the above object, the present invention has the following configuration.
The present invention includes a pressure sensor that can measure blood pressure and pulse wave, and a wireless transmitter that wirelessly transmits the information detected by the pressure sensor, but an integrated sensor unit formed on one chip by a semiconductor process; CPU for processing various data by controlling the receiving unit and the integrated sensor unit configured to read information from the sensor unit, a memory unit for storing the blood pressure and pulse wave information, and for viewing the measured blood pressure and pulse wave. Characterized in that consisting of a wireless reception system equipped with a speaker so that the LCD screen and an alarm in case of an emergency;
In order to achieve the above object, the blood pressure, pulse wave measuring apparatus according to the present invention includes a pressure sensor, and a wireless transmitter. The pressure detector detects the pressure of the blood flowing through the blood vessel, and the wireless transmitter wirelessly transmits the blood pressure information detected by the pressure detector to the wireless receiver, thereby allowing the wireless blood pressure and pulse wave measuring device to be easy without suffering the user. Repetitive blood pressure tests can be performed.
The pressure sensing unit and the wireless transmission unit may be formed on one chip by a semiconductor manufacturing process to reduce the production cost by minimizing the size of the wireless blood pressure and pulse wave measuring apparatus.
The wireless transmitter eliminates the need for a power supply by employing a non-powered RFID transponder, thereby enabling semi-permanent use of the wireless blood pressure and pulse wave measuring apparatus.
The wireless blood pressure and pulse wave measuring apparatus may further include an insulation unit which insulates the pressure sensor and the wireless transmitter from the outside. By insulating the components of the sensor unit from the outside, it is possible to prevent malfunction of the device and to prevent damage to the device.
The wireless receiving system may further include a storage unit which transmits a signal at a time designated by a program to operate a sensor and read information measured by the sensor, and stores the measured information. Storage makes it possible to use the information of the past as well as the current information.
The stored information is stored in an external storage device, such as a memory card, a USB storage device, and an external hard disk. The obtained information may further include an LCD so that the user can easily check the information in the wireless receiving system while being stored in the storage device. In this case, the obtained information may further include a function of notifying a warning sound when the blood pressure is included in a range of dangerous information in comparison with the information previously designated by the user.
In addition, the wireless reception system has a built-in wireless transmission and reception module of the USN method so that when the user goes to the hospital and the doctor diagnoses, the information obtained from the sensor is automatically transmitted to the doctor's computer.

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According to the present invention, by providing a pressure sensor and a sensor unit made of a single IC chip, which can be used for a long time, the patient's time required to perform blood pressure and pulse wave tests can be saved and stress can be reduced. Biological information can be obtained easily.
In addition, the patient himself does not need to record the biometric information separately so that the biometric information can be conveniently stored so that the patient's condition can be easily understood at the hospital.

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Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
1 is a schematic block diagram of an embodiment of an integrated sensor unit according to the present invention.
In FIG. 1, the integrated sensor unit 300 includes a pressure detector 100 and a wireless transmitter 200. The pressure detector 100 is a pressure sensor for detecting the pressure of blood flowing in the blood vessel, the wireless transmitter 200 is an RFID transponder that operates by electromotive force induced by radio waves without a power supply.
2 is a block diagram of a wireless receiving system.
In FIG. 2, the CPU 101 transmits a signal to the RFID reader IC 102 when it is time to measure specified by the program. When the RFID reader IC 102 transmits a test signal, the signal is amplified by the output amplifier 106 and then transmitted to the integrated sensor unit 300 via the antenna 108.
The integrated sensor unit measures blood pressure and pulse wave by a signal transmitted from a wireless reception system, and the information measured by the integrated sensor unit 300 is transmitted to the RFID reader IC 102 via a reception filter 107. do. When the RFID reader IC 102 sends the received information to the CPU 101, the CPU 101 sends blood pressure and pulse wave data to the external storage device 103 and the LCD 104, respectively, and stores the received information. To indicate to the user.
In this case, when the obtained information is determined to be dangerous information when analyzed by the CPU 101, an alarm signal is sent to the speaker 105 to inform that the user is in a dangerous state.
3 is a diagram illustrating an information delivery method of a wireless receiving system;
In FIG. 3, when a patient carries a receiving system 500 and goes to a hospital to receive a diagnosis, the doctor transmits the information to the doctor's computer through a wireless system by the USN 109 method, and the doctor conveniently retrieves the information. If the USN wireless system is not installed in the doctor's computer 303, the doctor uses the external storage device 103 to send the patient's information to the card reader 301 installed in the computer 303. Or USB 302 can be checked and the correct examination.
4 is a diagram illustrating a structural diagram of an integrated sensor unit.
The pressure sensing unit 100 may be implemented as a pressure sensor that detects the pressure of blood flowing through the blood vessel.
In FIG. 4, the diaphragm 204 is a very thin film installed on the back of the pressure sensor 203, and the degree of warpage varies depending on the pressure of blood flowing through blood vessels. The signal is changed.
The pressure sensor 203 is a FET type semiconductor sensor structure, and is composed of a sensor capable of sensing an electrical signal on a semiconductor wafer 201 and a diaphragm having a thin film on the back side. The pressure sensor 203 is classified into a capacitive sensor or a resistive sensor, and may be used in any way.
The pressure sensor 203 can be miniaturized, standardized and mass-produced using an integrated circuit process technology, and can also be manufactured as a smart sensor in which a measuring circuit and a wireless transmitter are integrated together or a multifunctional sensor for simultaneously measuring various bio-related materials. Can be.
The wireless transmitter 200 wirelessly transmits the information detected by the pressure detector 100. The wireless transmitter 200 includes a non-powered transponder, thereby eliminating the need to replace power, thereby allowing semi-permanent use of the wireless blood pressure and pulse wave measuring apparatus.
Although various methods may be considered as a wireless transmitter for implementing the wireless transmitter 200, in the present invention, the RFID transponder 202 may be applied to receive power through radio waves from the outside by applying RFID technology. This is because the RFID transponder 202 can operate even without a battery for its own power supply.
RFID is a field of automatic recognition such as barcode, magnetic, IC card, etc., and wirelessly recognizes recorded information using microwave (MHz, GHz) or long wave (KHz).
The reader combined with the magnetic coil and the transmitting / receiving device forms an electromagnetic field, and the RFID transponder 202, in which the coil and the microchip are embedded within the recognition range, induces energy by electromotive force to drive the microchip and stores it in the memory. Send the recorded information to the reader.
In order to design the RFID transponder 202, a passive RFID-less transponder 202 with built-in battery must be made and a circuit design capable of serving as a self-powered power source and a circuit design with low power consumption are required.
5 is a view illustrating a manufacturing process of an integrated sensor unit;
Step (a) forms an oxide film on the piezoresistor or piezocapacitor and the bottom of the wafer for fabricating the RFID circuit and pressure sensor.
Step (b) protects the circuit portion already fabricated for etching the bottom surface of the wafer with a protective film.
Step (c) patterns the oxide film on the underside of the wafer for diaphragm etching.
Step (d) performs a diaphragm etching. Generally, wet etching using TMAH solution or the like is used, but it may be manufactured by dry etching in some cases.
Step (e) removes the protective film and the oxide film and is completed.
6 is a schematic block diagram of a wireless transmitter.
Basically, the low frequency band RFID transponder IC is composed of a semiconductor chip and a loop antenna having a coil component. However, in the present invention, an RFID transponder design for microwaves capable of supplying sufficient power without an antenna is required.
Power-on reset (POR) 410 is a reset function for the operation of the digital circuit is a circuit for driving the sensor when receiving a signal from the receiving system. The memory 450 stores an ID or information of a user and repeatedly performs a storage function while power is supplied.
When the RFID transponder 202 is in close proximity to the RFID reader, an induced current is generated in the transceiving unit 420 located in the transponder 202 that receives the radio wave, thereby operating the device.
At this time, the biometric information is obtained by operating the pressure sensor using the induced current generated by electromotive force, and then wirelessly transmitting the biometric information acquired by the RFID transponder 202.
In order to operate the integrated sensor unit including the pressure sensing unit 100 and the wireless transmission unit 200, power of several hundred uW is required, and sufficient power for driving the integrated sensor unit can be obtained by the method according to the present invention.
Coils capable of making induced currents by electromotive force are integrally formed on a semiconductor chip in a structure necessary to make their own power in the integrated sensor unit. It also serves as an antenna for the transponder.
In FIG. 6, first, when the reader sends a signal to measure in the wireless receiving system, the detector 100 operates and sends the measured value to the comparator 480 to compare the normal value of the blood pressure with the measured value and change the A / D amount. Sent to converter 470.
The A / D converter 470 converts an analog signal into a digital signal. This is because the signal received from the sensor is in analog form, so a digital signal is needed to process the signal in the next stage of the signal processor.
The signal received from the A / D converter 470 is transferred to the microprocessor 490 and processed by the patient's information and signal processing information stored in the memory 450 and then sent to the transmitter 490. The transmitter 490 sends a signal to an external reader.
The pressure detector 100 and the wireless transmitter 200 may be formed on one chip by a semiconductor process. As such, when all the components of the blood test apparatus are formed on one chip by a semiconductor process, the size of the blood test apparatus can be minimized and the production cost can be reduced.
The integrated sensor unit may further include an insulation unit that insulates the outside. The insulation unit electrically insulates the integrated sensor unit from the outside to prevent malfunction of the device and to prevent damage to the device.
In the present invention, the integrated sensor is attached to the site where the blood pressure is most felt in the human body in a simple manner to be attached, but in principle, it is manufactured by miniaturization, no power, and wireless transmission by a semiconductor manufacturing process. Can be used directly mounted on the blood vessels in the inside, Figure 7 is an embodiment showing an example of the use of such an integrated sensor.

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1 is a schematic block diagram of an integrated sensor unit
2 is a schematic block diagram of a wireless receiving system;
3 is a diagram illustrating a method of transmitting information between a wireless receiving system and a doctor computer.
4 is a structural diagram of an integrated sensor unit
5 is a manufacturing process diagram of the integrated sensor unit
6 is a block diagram of a wireless transmission unit
7 is an example of using a wireless biosensor

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Claims (4)

A pressure sensor for measuring blood pressure and pulse wave and a wireless transmitter for wirelessly transmitting the information detected by the pressure sensor, including an integrated sensor unit formed on one chip by a semiconductor process; and information from the integrated sensor unit. Control the receiving unit and the integrated sensor unit for reading the RFID and the memory unit for processing a variety of data, the memory unit for storing the blood pressure and pulse wave information and the LCD screen and emergency for viewing the measured blood pressure and pulse wave Wireless blood pressure and pulse wave measuring apparatus, characterized in that consisting of; a wireless receiving system having a speaker so as to sound an alarm in a situation. The method of claim 1, The integrated sensor unit includes a transceiver 420 for transmitting and receiving data with a wireless receiving system; A power-on reset (POR) 410 for resetting the circuit of the integrated sensor unit according to the received signal; A pressure sensing unit 100 operated by the reset signal of the POR; A comparator 480 for comparing the data measured by the pressure sensing unit with a reference value; An A / D converter 470 for converting an analog signal of the comparator into a digital signal; A memory 450 that repeatedly performs a storage function while power is supplied to store a user's ID and various kinds of information; And a microprocessor 490 which commands a measurement signal to the pressure sensing unit according to the reset signal, stores the measured signal, and performs a control function for transmitting data to a wireless receiving system through a transceiver. Blood pressure and pulse wave measuring device. delete delete

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