1. A portable electronic device for displaying warning signals of a bicycle, the portable electronic device comprising:
a gravity sensor;
a gyroscope;
a display screen;
a detecting module that detects an acceleration of the portable electronic device along three predefined axes in real time using the gravity sensor, and detects an angular velocity of the electronic device along the three predefined axes using the gyroscope, wherein the portable electronic device is carried by the bicycle;
a determination module that determines a current driving condition of the bicycle according to the detected acceleration and the detected angular velocity of the portable electronic device; and
a display module that displays warning signals of the bicycle on the display screen according to the current driving condition of the bicycle;
wherein the portable electronic device comprises: a smart phone, a PDA, or a tablet computer;
wherein the smart phone, PDA, or tablet computer comprises a rigid casing and the components of the portable electronic device, including the display screen, are contained within the rigid casing;
wherein the smart phone, PDA, or tablet computer is configured to be carried on the back of a bicyclist; and
wherein the display screen of the smart phone, PDA, or tablet computer is configured to display the warning signals.
2. The portable electronic device according to claim 1, wherein the driving condition includes whether the bicycle is driven at an accelerating or a uniform speed, whether the bicycle turns to the left or turns to the right, or whether the bicycle brakes.
3. The portable electronic device according to claim 1, wherein the three predefined axes are respectively represented by Z-axis in a gravity direction, X-axis perpendicular to the display screen of the electronic device, and Y-axis perpendicular to both the Z-axis and the X-axis.
4. The portable electronic device according to claim 3, wherein the determination module further:
determines that the bicycle is driven at an accelerating or an uniform speed if the acceleration of the portable electronic device is zero or the acceleration of the portable electronic device is in a positive direction of the X-axis;
determines that the bicycle brakes if the acceleration of the portable electronic device turns to a negative direction of the X-axis in a predefined short time period;
determines that the bicycle turns to the left if the angular velocity of the portable electronic device around the Z-axis is in a counter-clockwise direction from the top down and the angular velocity reaches a predefined threshold value; and
determines that the bicycle turns to the right if the angular velocity of the electronic device around the Z-axis is in a clockwise direction from the top down and the angular velocity reaches the above predefined threshold.
5. The portable electronic device according to claim 3, wherein the determination module further:
determines that the bicycle turns to the left if the angular velocity of the portable electronic device in the counter clockwise direction around the Z-axis from the top down reaches the above predefined threshold value, an angle the portable electronic device rotates around the Z-axis from the top down is less than a first predefined value and more than a second predefined value, and the acceleration of the portable electronic device is in the positive direction of the X-axis; and
determines that the bicycle turns to the right if the angular velocity in the counter clockwise direction around the Z-axis reaches the above predefined threshold value from the top down, an angle the portable electronic device rotates around the Z-axis is less than a first predefined value and more than a second predefined value, and the acceleration of the portable electronic device is the negative direction of the X-axis.
6. A method for displaying warning signals of a bicycle using a portable electronic device configured to be carried by the bicycle, the method comprising:
detecting an acceleration of the portable electronic device on three predefined axes in real time using a gravity sensor of the portable electronic device, and detecting an angular velocity of the portable electronic device around the three predefined axes using a gyroscope of the portable electronic device, wherein the portable electronic device is carried by the bicycle;
determining a current driving condition of the bicycle according to the detected acceleration and the detected angular velocity of the portable electronic device; and
displaying warning signals of the bicycle on a display screen of the portable electronic device according to the current driving condition of the bicycle;
wherein the portable electronic device comprises one of a smart phone, a PDA, or a tablet computer;
wherein the smart phone, PDA, or tablet computer comprises a rigid casing and the components of the portable electronic device, including the display screen, are contained within the rigid casing;
wherein the smart phone, PDA, or tablet computer is configured to be carried on the back of a bicyclist when in use and
wherein the display screen of the smart phone, PDA, or tablet computer is configured to display the warning signals.
7. The method according to claim 6, wherein the driving condition is whether the bicycle is driven at an accelerating or a uniform speed, whether the bicycle turns to the left or turns to the right, or whether the bicycle brakes.
8. The method according to claim 6, wherein the three predefined axes are respectively represented by Z-axis in a gravity direction, X-axis perpendicular to the display screen of the electronic device, and Y-axis perpendicular to both the Z-axis and the X-axis.
9. The method according to claim 8, further comprising:
determining that the bicycle is driven at an accelerating or an uniform speed if the acceleration of the portable electronic device is zero or the acceleration of the portable electronic device is in a positive direction of the X-axis;
determining that the bicycle brakes if the acceleration of the portable electronic device turns to a negative direction of the X-axis in a predefined short time period;
determining that the bicycle turns to the left if the angular velocity of the portable electronic device around the Z-axis is in a counter-clockwise direction from the top down and the angular velocity reaches a predefined threshold value; and
determining that the bicycle turns to the right if the angular velocity of the portable electronic device around the Z-axis is in a clockwise direction from the top down and the angular velocity reaches the above predefined threshold.
10. The method according to claim 8, further comprising:
determining that the bicycle turns to the left if the angular velocity of the portable electronic device in the counter clockwise direction around the Z-axis from the top down reaches the above predefined threshold value, an angle the portable electronic device rotates around the Z-axis from the top down is less than a first predefined value and more than a second predefined value, and the acceleration of the portable electronic device is in the positive direction of the X-axis; and
determining that the bicycle turns to the right if the angular velocity in the counter clockwise direction around the Z-axis reaches the above predefined threshold value from the top down, an angle the portable electronic device rotates around the Z-axis is less than a first predefined value and more than a second predefined value, and the acceleration of the portable electronic device is the negative direction of the X-axis.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Support system for auxiliary power unit which sustains an auxiliary power unit of an aircraft to a fixed structure belonging to a compartment of the auxiliary power unit of said aircraft, made in a high mechanical strength material, and with high resistance to ignition, which comprises
means of attachment of the support system that are complementary to the means of attachment of the fixed structure provided in said fixed structure, and means of securing of the support system that are complementary to the means of securing of the auxiliary power unit provided in said auxiliary power unit,
wherein in addition it comprises at least three fittings of a substantially cylindrical shape, each of the said fittings comprising a first end and a second end, with said means of attachment of the support system being provided in the said first end and said means of securing of the support system being provided in the said second end, in such a way that said first end is attached to the fixed structure belonging to the auxiliary power unit compartment and said second end is joined to the auxiliary power unit.
2. Support system for auxiliary power unit according to claim 1, wherein said fittings are hollow.
3. Support system for auxiliary power unit according to claim 1 wherein the fixed structure to which the first end of each of the fittings is attached is located on the upper surface of the auxiliary power unit compartment, and said second end of each of the fittings is joined to the upper surface of the auxiliary power unit in such a way that said auxiliary power unit hangs from those fittings.
4. Support system for auxiliary power unit according to claim 1, wherein the fixed structure to which the first end of each of the fittings is attached is located on the lower surface of the auxiliary power unit compartment, and said second end of each of the fittings is joined to the lower surface of the auxiliary power unit in such a way that said auxiliary power unit rests on those fittings.
5. Support system for auxiliary power unit according to claim 1, wherein the second ends of each of the fittings are joined to the auxiliary power unit in a zone close to the periphery of the extension of that auxiliary power unit and at least one of said fittings is not located in the straight line defined by the rest of the said fittings.
6. Support system for auxiliary power unit according to claim 1, wherein said fittings comprise at least one rear fitting in such a way that said rear fitting is joined to the rear part of the auxiliary power unit, and at least a first forward fitting and a second forward fitting in such a way that said first forward fitting and second forward fitting are joined to the forward part of said auxiliary power unit.
7. Support system for auxiliary power unit according to claim 6, wherein said first forward fitting and second forward fitting present a curvature in such a way that the means of securing of the support system of the second end of each of said forward fittings are joined to the auxiliary power unit in a horizontal plane.
8. Support system for auxiliary power unit according to claim 1, wherein said means of attachment of the support system which attach said fittings to the fixed structure comprise at least three bolt-holes and at least three bolts complementary to said bolt-holes and in turn complementary to at least another three bolt-holes located in the means of attachment of the fixed structure in the fixed structure.
9. Support system for auxiliary power unit according to claim 1, wherein said means of securing of the support system which join said fittings to the auxiliary power unit comprise at least three bolt-holes and at least three bolts complementary to said bolt-holes and in turn complementary to at least another three bolt-holes located in the means of securing of the auxiliary power unit in the auxiliary power unit.
10. Support system for auxiliary power unit according to claim 6, wherein the rear fitting presents an array of lateral ribs along the entire length of its outer surface.
11. Support system for auxiliary power unit according to claim 1, wherein the high resistance material with which the said support system is produced is PH13-8Mo steel (1.4534).
12. Support system for auxiliary power unit according to claim 1, wherein each of the fittings includes an adapter for bars such that said support system for auxiliary power unit is compatible with auxiliary power unit attachment systems using conventional bars.