KR101341973B1 - Apparatus for measuring body temperature - Google Patents

Abstract

The present invention relates to a body temperature measuring device. The body temperature measuring device includes a battery unit which supplies power; an input unit which generates and applies a button input signal; a power on/off unit which turns on or off the power supply from the battery unit according to the button input signal applied from the input unit; a converter unit which includes a step-up converter and converts the power supplied from the power on/off unit to a proper voltage; a temperature sensor unit which is operated by the power converted into the proper voltage by the converter unit and provides a measured body temperature converted into a voltage; a controller unit which is operated by the power converted into the proper voltage by the converter unit, provides a power maintaining signal to the power on/off unit, converts the analog voltage value provided by the temperature sensor unit into a digital voltage value, provides a temperature value corresponding to the voltage value, maintains a sleep state for a preset period of time, returns to a power-on state, repeats the sleep state and the power-on state for a preset number of times, and releases the power maintaining signal; an LCD driver unit which provides the temperature value provided from the controller unit to display; and a wireless communication unit which includes a Bluetooth module and sends the temperature value delivered from the controller unit to a paired smart device. [Reference numerals] (110) Battery unit;(120) Input unit;(130) Power on/off unit;(140) Converter unit;(150) Temperature sensor unit;(160) Controller unit;(170) LCD driver unit;(180) Display unit;(190) Wireless communication unit

Description

Body temperature measuring device {APPARATUS FOR MEASURING BODY TEMPERATURE}

The present invention relates to a body temperature measuring apparatus, and more particularly, to a body temperature measuring apparatus capable of measuring the body temperature when the body temperature of the human body is necessary or necessary period, and transmit the measured body temperature to the smart device wirelessly.

As is well known, the body temperature measuring device may be classified into a mercury thermometer and a digital thermometer according to a measuring method. The body temperature can be measured by maintaining it for a certain time until it is sufficiently delivered to the thermometer.

All of these body temperature measurement devices are integrated, and since both the measurement of body temperature and the recognition of body temperature are made in a single thermometer, you must make a face-to-face measurement whenever you or a third party desires it. Even if this is necessary, there is an inconvenience of having to check the body temperature every time by checking a certain time interval.

Korean Patent Publication No. 10-2006-0008607 (January 27, 2006) "Wireless body temperature measuring system and wireless body temperature measuring method using the same"

The present invention is to provide a body temperature measuring device that can measure the body temperature when the body temperature of the body when necessary or necessary, and transmit the measured body temperature wirelessly to the smart device.

In addition, the present invention supplies power when the button input signal is applied while waiting in the power off state, and by repeating the process of re-supplying the power while waiting in the sleep state for a predetermined time during the power supply for a predetermined number of times, To provide a body temperature measurement device that can provide a low-power solution that minimizes consumption.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects, which are not mentioned above, will be clearly understood by those skilled in the art from the following description. .

According to an embodiment of the present invention, the battery unit for supplying power, the input unit for generating and applying a button input signal, and the power supply from the battery unit in accordance with the button input signal applied from the input unit on / off ( a power supply on / off unit for turning on / off, a converter unit for converting the power supplied from the power supply on / off unit including a step-up converter into a proper voltage, and an appropriate voltage in the converter unit A temperature sensor unit which operates according to the power converted into the voltage and converts the measured body temperature into a voltage, and operates according to the power converted into the proper voltage by the converter unit and provides a power maintenance signal to the power on / off unit. When the analog voltage value provided from the temperature sensor unit is converted into a digital voltage value and the corresponding temperature value is provided, the preset state is set to the sleep state. And a controller unit for releasing the power maintenance signal after repeating the sleep state and the power on state by a predetermined number of times, and displaying the temperature value provided from the controller unit. A body temperature measuring device may be provided that includes an LCD driver and a wireless communication unit for transmitting the temperature value transmitted from the controller unit, including a Bluetooth module, to a paired smart device.

In the present invention, it is possible to provide a body temperature measuring apparatus capable of measuring the body temperature when the body temperature of the human body is necessary or during a necessary period, and transmitting the measured body temperature to the smart device wirelessly.

In addition, the present invention supplies power when the button input signal is applied while waiting in the power off state, and by repeating the process of re-supplying the power while waiting in the sleep state for a predetermined time during the power supply for a predetermined number of times, It can provide a low power solution that minimizes consumption.

1 is a block diagram of a body temperature measuring apparatus according to an embodiment of the present invention.
2 is a circuit diagram of a battery unit of a body temperature measuring apparatus according to an embodiment of the present invention.
3 is a circuit diagram of an input unit and a power on / off unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention.
4 is a circuit diagram of a converter unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention.
5 is a circuit diagram of a temperature sensor unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention.
6A to 6C are circuit diagrams of a controller unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention.
7 is a circuit diagram of the LCD driver unit of the body temperature measuring apparatus according to the embodiment of the present invention.
8A and 8B are circuit diagrams of a display unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention.
9 is a circuit diagram of a wireless communication unit of the body temperature measuring apparatus according to the embodiment of the present invention.
10A and 10B are circuit diagrams of a body temperature measuring apparatus according to an exemplary embodiment of the present invention.

Advantages and features of the embodiments of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

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

1 is a block diagram of a body temperature measuring apparatus according to an embodiment of the present invention, Figure 2 is a circuit diagram of the battery unit of the body temperature measuring apparatus according to an embodiment of the present invention, Figure 3 is a body temperature measurement according to an embodiment of the present invention 4 is a circuit diagram of an input unit and a power on / off unit of the apparatus, and FIG. 4 is a circuit diagram of a converter unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention, and FIG. 5 is a circuit diagram of a temperature sensor unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention. 6A to 6C are circuit diagrams of a controller unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention, and FIG. 7 is a circuit diagram of an LCD driver unit of a body temperature measuring apparatus according to an exemplary embodiment of the present invention. 9 is a circuit diagram of a display unit of a body temperature measuring apparatus according to an embodiment of the present invention, and FIG. 9 is a circuit diagram of a wireless communication unit of a body temperature measuring apparatus according to an embodiment of the present invention.

1 to 9, the body temperature measuring apparatus according to the embodiment of the present invention includes a battery unit 110, an input unit 120, a power on / off unit 130, a converter unit 140, and a temperature sensor unit ( 150, the controller 160, the LCD driver 170, the display 180, and the wireless communication unit 190.

The battery unit 110 includes a 2V-3V power supply lithium coin type battery to supply power. Specifically, as shown in FIG. 2, a surface mounting device (SMD) chip capacitor DC7 is included, and power is supplied to the power on / off unit 130 through a power connector J8 to which a lithium coin-type battery is connected. Supply (VDD).

The input unit 120 includes a push button to generate and apply a button input signal when the user presses the button. In detail, as illustrated in FIG. 3, the SMD chip resistor R26 and the SMD button S2 may be included, and when the user presses the SMD button, the button input signal is applied to the power on / off unit 130. Do it.

The power on / off unit 130 may turn on / off the power supply from the battery unit 110 according to a button input signal applied from the input unit 120, and apply the applied button input signal. It can be delivered to the controller unit 160.

Specifically, as shown in FIG. 3, the power on / off unit 130 includes SMD chip resistors R17, R18, R19, and R20, a P-channel transistor Q8, an N-channel transistor Q11, and a diode D3. And an electrolytic SMD capacitor C6 and the like, and supply (VDD_IN) the power VDD supplied from the battery unit 110 to the converter 140 according to a button input signal applied from the input unit 120. The controller 200 may provide the controller 160 with a driving signal BUTTON_INPUT instructing the driving of the controller 160 according to the applied button input signal. At this time, by the button input signal applied from the input unit 120, the controller unit 160 started driving while the on / off unit 130 turns on the power supply to the on / off unit 130. The power on / off unit 130 may be maintained in a driving state by transmitting a power maintenance signal.

Here, the switching function of the input unit 120 and the power on / off unit 130 will be described. When the SMD button S2 is pressed, the switching unit 120 extends from the base end of the P-channel transistor Q8 to be connected to the input unit 120. The point becomes GND (0V). When the base end of the P-channel transistor Q8 falls to GND (0V), VDD and VDD_IN are connected, and VDD_IN becomes VDD (2-3V). When the 160 operates and raises the POWER_ON signal to 3.3V, and the base terminal of the N-channel transistor Q11 becomes 3.3V, the base terminal of the P-channel transistor Q8 is changed to 0V, thereby performing an electrical switching function. can do.

The converter 140 includes a step-up converter to convert the power supplied to a proper voltage. In this case, the converter unit 140 may convert a voltage of 2V-3V supplied from the battery unit 110 into 3.3V required by each circuit and provide the same.

In detail, the converter 140 includes an inductor L1, an N-channel transistor Q10, an SMD chip resistor R22, SMD chip capacitors C5 and DC6, and a chip tantalum capacitor C17 as illustrated in FIG. 4. And an electrolytic SMD capacitor (C7), an SMD diode (D5), a step-up converter (U5), and the like. When the power supply (VDD_IN) is supplied from the power on / off unit 130, 3.3 is required for each circuit. By converting to V, the temperature sensor unit 150, the controller unit 160, the LCD driver unit 170, the wireless communication unit 190, etc. can be supplied (VCC). At this time, the SMD chip capacitor C5 and the electrolytic SMD capacitor C7 are charged with a predetermined amount of power to supply the self, thereby maintaining the converter 140 in a driving state.

Here, when the power conversion of the converter 140 is described, VDD_IN should convert VCC to 3.3V when a power supply of 2-3V is applied, and the step-up converter U5 is N according to the amount of current consumed by VCC. The amount of the channel transistor Q10 may be controlled by repeatedly turning on / off the power of the channel transistor Q10 at a predetermined frequency (that is, increasing the time to turn on the power when a large amount of current is required in the VCC). When this switching is repeated, a square wave signal is generated, which is kept at a constant voltage by the inductor L1, the SMD diode D5 and the electrolytic SMD capacitor C7, and the chip tantalum capacitor C17 and the SMD chip. Capacitor DC6 performs a function of reducing noise of VDD_IN (power supply).

The temperature sensor unit 150 operates according to the power supply converted from the converter unit 140 to an appropriate voltage, and converts the measured body temperature into a voltage using a resistance value changed according to temperature to provide the voltage.

Specifically, as shown in FIG. 5, the temperature sensor unit 150 may include an SMD chip resistor R2 and a SMD chip resistor R3 as a temperature sensor. The temperature sensor may be an NTC thermistor. Coefficient thermistor), and the resistance value is changed according to the temperature, and when this resistance value is converted, the voltage value transmitted to the controller unit 160 is changed, and the controller unit 160 uses the voltage value to use the temperature value. It can be seen. That is, the AVCC is 3.3V, and the SMD chip resistor R3, which is a temperature sensor, changes according to the temperature. When this value is changed, the voltage value THER is changed by the voltage divider circuit including the SMD chip resistor R2. Then, the voltage value can be transmitted to the controller unit 160.

The controller unit 160 operates according to the power supply converted into the appropriate voltage in the converter unit 140, converts the analog voltage value provided from the temperature sensor unit 150 into a digital voltage value, and converts the converted digital voltage value. The temperature value corresponding to the LCD driver 170 and the wireless communication unit 190 to be described later to be delivered to each. Herein, the temperature value is transmitted to the LCD driver unit 170 as a temperature value expressed in degrees Celsius, and the wireless communication unit 190 to be transmitted as a temperature value expressed in degrees Fahrenheit.

In addition, the controller unit 160 provides a power maintenance signal to the power on / off unit 130 when operating in accordance with the power supply converted into the appropriate voltage in the converter unit 140, and the conversion and transfer as described above. Is completed, it is kept in the sleep state for a preset time (approximately 3 seconds) and then returned to the power-on state. do.

In detail, the controller 160 may include SMD chip capacitors C1, C3, DC1, DC2, DC3, and DC15, a chip tantalum capacitor C18, a CPU clock Y1, and SMD, as shown in FIGS. 6A to 6C. The chip resistors (R1, R24, R25), inductor (L3), 32-pin CPU (U1), DIP connector (J3, J7), etc., and the power source (VCC) converted to the appropriate voltage in the converter unit 140 ) Is supplied to the power on / off unit 130 according to the driving signal BUTTON_INPUT corresponding to the button input signal provided from the power on / off unit 130.

Here, the DIP connector J7 is provided for inputting a program to the 32-pin CPU U1 connected to an external ISP, and the DIP connector J3 may be provided for monitoring a signal entering the wireless communication unit 190. have.

In addition, when the voltage value THER is transmitted from the temperature sensor unit 150, the controller unit 160 converts the digital voltage value to a value of 0-1023 using the ADC. For example, the ADC value decreases as the temperature increases, and the ADC values are stored in a table according to each temperature. The ADC values are used as temperature values in the LCD driver 170 and the wireless communication unit 190, respectively. I can deliver it. Here, the controller unit 160 is charged by a certain amount of power from the SMD chip capacitors (C1, C3) to be supplied by itself, thereby maintaining the controller unit 160 in a driving state.

The LCD driver 170 may provide a digital voltage value provided from the controller 160 to be displayed on the LCD. Here, even if the controller unit 160 is in the sleep state, it is possible to provide the LCD to display the last digital voltage value transmitted.

The display unit 180 may display a temperature value transmitted from the LCD driver 170. Specifically, as shown in FIG. 7, the LCD driver 170 includes SMD chip capacitors C2 and C3, an LCD driver clock Y2, an SMD chip resistor R4, and a 48-pin LCD driver U7. 8A and 8B, the display unit 180 includes an LCD U8, a connector J9, and the like. In the 48-pin LCD driver U7, 32 of the controller unit 160 is configured. Receives data and control signals CS, RD, WR, and DATA for turning on or off a specific pixel of the LCD U8 from the pin CPU U1, and selectively turns on or off a plurality of pixels, thereby allowing the LCD U8 To be printed on.

Here, the connector J9 may be provided to monitor a signal entering the LCD driver 170 from the controller 160.

At this time, even if the 32-pin CPU U1 of the controller unit 160 is in the sleep state, the LCD driver unit 170 may use the power charged in the SMD chip capacitors C2 and C3 from the 32-pin CPU U1. The temperature value can be output to the LCD U8 according to the last data and the control signal.

The wireless communication unit 190 may transmit the digital voltage value transmitted from the controller unit 160 to the paired smart device.

In detail, the wireless communication unit 190 includes a Bluetooth module U6 and SMD chip resistors R21 and R23 as shown in FIG. 9, and the Bluetooth module U6 includes a profile, pairing management, and power sleep. UART (Universal Asynchronous Receiver / ransmitter) signal including the temperature data from the controller unit 160 through the transmission and reception (CPU_TX, CPU_RX) of the controller unit 160 with the 32-pin CPU (U1) When receiving, it is possible to wirelessly transmit the temperature data to the Bluetooth module of the paired smart device.

Therefore, it is possible to provide a body temperature measuring device capable of measuring the body temperature when the body temperature of the human body is required or for a necessary period, and transmitting the measured body temperature wirelessly to the smart device.

In addition, the present invention supplies power when the button input signal is applied while waiting in the power off state, and by repeating the process of re-supplying the power while waiting in the sleep state for a predetermined time during the power supply for a predetermined number of times, It is possible to provide a low power solution that minimizes consumption.

10A and 10B are circuit diagrams of a body temperature measuring apparatus according to an exemplary embodiment of the present invention, in which FIG. 10A shows a bottom arrangement of a substrate and FIG. 10B shows an upper arrangement of a substrate.

Referring to FIG. 10A, a 32-pin CPU U1, which is a main controller, is disposed on the left side of the substrate, a 48-pin LCD driver U7, which is an LCD controller, is disposed on the left side, and a battery holder is connected to a battery on the right side. Place the power connector J8.

In addition, the CPU clock Y1 is disposed on one side of the 32-pin CPU U1, and the SMD chip capacitors C1 and C3 are disposed on both sides of the CPU clock Y1, and the SMD is surrounded by the 32-pin CPU U1. Place the chip capacitors (DC1, DC2, DC3, DC15) and the SMD chip resistors (R1, R21, R24), the SMD chip resistors (R4) around the 48-pin LCD driver (U7), and the 32-pin CPU ( Place the DIP connector J7 on the other side of U1).

Referring to FIG. 10B, the SMD chip resistors R2 and R3 and the Bluetooth module U6 are disposed on the left side of the substrate and the LCD U8, which is a display device, is disposed on the left side of the substrate. The DIP connector J3 is disposed on the side surface of the panel, and the DIP connector J9 is disposed on the other side of the LCD U8.

In addition, the circuit components of the input unit 120 including the SMD chip resistor R26 and the SMD button S2 on the upper right side of the substrate, the SMD chip resistors R17, R18, R19, and R20, and the N-channel transistor Q8. Circuit components of the power supply on / off unit 130 including the P-channel transistor Q11, the diode D3, and the electrolytic SMD capacitor C6, and the inductor L1, the P-channel transistor Q10, and the SMD chip. Of the converter unit 140 including the resistor R22, the SMD chip capacitors C5 and DC6, the chip tantalum capacitor C17, the electrolytic SMD capacitor C7, the SMD diode D5, the step-up converter U5, and the like. Place and form circuit components.

In the above description, the embodiments of the present invention have been described, but the present invention is not necessarily limited thereto. Those skilled in the art to which the present invention pertains have various permutations without departing from the technical spirit of the present invention. It will be readily appreciated that modifications and variations are possible.

110: battery unit 120: input unit
130: power on / off section 140: converter section
150: temperature sensor unit 160: controller unit
170: LCD driver portion 180: display portion
190:

Claims (6)

A battery unit for supplying power,
An input unit for generating and applying a button input signal;
A power on / off unit for turning on / off power supplied from the battery unit according to the button input signal applied from the input unit;
A converter unit including a step-up converter to convert the power supplied from the power on / off unit into an appropriate voltage;
In the converter section A temperature sensor unit which operates according to a power supply converted to an appropriate voltage and converts the measured body temperature into a voltage;
The converter unit operates according to the power supply converted into a proper voltage, provides a power maintenance signal to the power on / off unit, and converts an analog voltage value provided from the temperature sensor unit into a digital voltage value to provide a temperature value. A controller unit configured to maintain a sleep state for a predetermined time, return to a power on state, and release the power maintenance signal after repeating the sleep state and the power on state a predetermined number of times;
An LCD driver for providing the LCD with the temperature value provided from the controller;
It includes a wireless communication unit for transmitting the temperature value transmitted from the controller unit including a Bluetooth module to the paired smart device,
And the power on / off unit maintains the driving state according to the power maintenance signal transmitted from the controller unit in which driving is started while the power supply is turned on by the button input signal. delete 3. The method of claim 2,
And the power on / off unit is supplied with power through switching of a P channel transistor and an N channel transistor to operate the controller unit. The method of claim 1,
The converter unit has a body temperature, characterized in that the step-up converter to maintain the power of the N-channel transistor on and off at a constant frequency to generate a square wave signal at a constant voltage through the inductor, SMD diode and electrolytic SMD capacitor Measuring device. The method of claim 1,
The converter unit, characterized in that for reducing the noise (noise) for the power supply through the chip tantalum capacitor and SMD chip capacitor. The method of claim 1,
The temperature sensor unit, NTC thermistor (Negative Temperature Coefficient thermistor) consisting of two SMD chip resistors.

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