Digital pulse oximeter with automatic direction-changing function
First Claim
1. A digital pulse oximeter with automatic orientation change function, comprising a housing that is configured to clamp a human finger being tested, a display window disposed at outside of and atop the housing, a circuit being disposed within the housing for calculating and analyzing tested signals, and displaying them in the display window atop the housing via a display, wherein the circuit has only one control key disposed on the housing and the circuit is connected with a two-axis accelerometer or three-axis accelerometer to control display contents of a display in the display window to be always oriented properly for easy reading;
- wherein the circuit comprises a light-frequency converter, a red infrared light emitting diode, a light-emitting driving circuit, a microprocessor module, the display and a power supply module, the power supply module supplies power to the light-frequency converter, the red infrared light emitting diode, the light-emitting driving circuit, the microprocessor module, and the display;
the light-frequency converter transmits a received signal that is emitted by the red infrared light emitting diode and passes through a finger to the microprocessor module;
the microprocessor module is provided with two input ends which are respectively connected with the two-axis accelerometer or three-axis accelerometer and the control key;
wherein the microprocessor module has a control table containing a long press-down time and a short press-down time of the control key, and the microprocessor module is configured such that when the control key is pressed, the microprocessor module tests the press-down time of the control key and shifts from one processing function to another according to the length of the press-down time of the control key and the control table.
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Accused Products
Abstract
A digital pulse oximeter with automatic orientation change function, comprising a housing that is configured to clamp a human finger being tested, a display window disposed at outside of and atop the housing, a circuit being disposed within the housing for calculating and analyzing the tested signals, and displaying them in the display window atop the housing via a display, wherein the said circuit has only one control key disposed on the housing, the said circuit allowing the display contents of the display to be always oriented properly for easy reading by connecting with one two-axis or three-axis accelerometer. The digital pulse oximeter of the present invention is featured with small size and convenient operation and can shift from one function to another using only one control key in conjunction with the interface display, thereby increasing the functions of small-sized pulse oximeters. The present invention uses accelerometers to judge the placing location of the apparatus without the need for any operation from the user, and the apparatus can automatically change the display orientation of the display, thus providing great convenience to the user.
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Citations
6 Claims
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1. A digital pulse oximeter with automatic orientation change function, comprising a housing that is configured to clamp a human finger being tested, a display window disposed at outside of and atop the housing, a circuit being disposed within the housing for calculating and analyzing tested signals, and displaying them in the display window atop the housing via a display, wherein the circuit has only one control key disposed on the housing and the circuit is connected with a two-axis accelerometer or three-axis accelerometer to control display contents of a display in the display window to be always oriented properly for easy reading;
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wherein the circuit comprises a light-frequency converter, a red infrared light emitting diode, a light-emitting driving circuit, a microprocessor module, the display and a power supply module, the power supply module supplies power to the light-frequency converter, the red infrared light emitting diode, the light-emitting driving circuit, the microprocessor module, and the display;
the light-frequency converter transmits a received signal that is emitted by the red infrared light emitting diode and passes through a finger to the microprocessor module;
the microprocessor module is provided with two input ends which are respectively connected with the two-axis accelerometer or three-axis accelerometer and the control key;wherein the microprocessor module has a control table containing a long press-down time and a short press-down time of the control key, and the microprocessor module is configured such that when the control key is pressed, the microprocessor module tests the press-down time of the control key and shifts from one processing function to another according to the length of the press-down time of the control key and the control table. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification