Patent Application
20160084648
The present patent application claims benefit of Chinese patent application No. 201410487585.4 filed on Sep. 23, 2014, the entire contents of which are incorporated by reference.
The invention belongs to the field of measuring tools and technology, relates to a three dimensional angle measuring device for measuring and correcting horizontal, vertical and other angle state with high precision.
It is needed to measure and correct horizontal, vertical and other angle states of an object during operation processes such as house decoration, maintenance, item installation, etc., the existing pointer-type angle measuring device mostly relies on reading by naked eyes, and it needs time to analyze in the work requiring higher precision, and there are greater measurement errors, which brings inconvenience to the work.
Aiming at existing inconvenience brought by reading the pointer by naked eyes, the invention provides a liquid crystal digital display device with high precision. It just needs to place the device on a test plane, then the present angle can be displayed precisely, and the precision can reach ±0.10°; the invention also has functions such as calibration, locking, resetting and calculator in the function test, thus avoiding daily tedious operation.
The technical scheme adopted in the invention is achieved as follows: a three dimensional angle measuring device, includes a housing, a key module, a power module, a display module, an information processing module, a buzzing module and a sensor module, wherein the power module is connected with the information processing module and the key module, the information processing module is connected with the key module, the display module, the information processing module, the buzzing module and the sensor module.
Further, the power module includes a relay, a voltage regulator module and a power circuit.
Further, the key module includes angle measurement function keys, calculator keys and a keying circuit.
In the three dimensional angle measuring device, two horizontal datum planes are set on the housing, wherein, a first horizontal datum plane is on the left side of the housing, and a second horizontal datum plane is on the back of the housing.
Further, in the one three dimensional angle measuring device, the angle measurement function keys and the calculator keys are conductive keys.
Further, the display module includes a first liquid crystal display window, a second liquid crystal display window, a display module circuit, a first liquid crystal display drive integrated chip and a second liquid crystal display drive integrated chip.
Further, the buzzing module includes a buzzer and a buzzing module circuit.
Further, the sensor module includes a sensor module circuit and a sensor chip.
In the three dimensional angle measuring device, the information processing module includes a microcontroller U3 and a control circuit, wherein the control circuit includes a crystal oscillator Y, a switch K, a resistor 3 R3, a resistor 4 R4, a resistor 5 R5, a resistor 6 R6, a capacitor 6 C6, a capacitor 7 C7, a capacitor 8 C8, a capacitor 9 C9, a capacitor 14 C14, a capacitor 15 C15, a capacitor 16 C16 and a capacitor 17 C17, wherein one end of the switch K and one end of the capacitor 9 C9 are connected with the anode output VDD of the circuit, the other end of the capacitor 9 C9 is connected with the power cathode GND of the circuit, and the other end of the switch K is connected with the pin 1 of the microcontroller U3. One end of the resistor 5 R5 is connected with the anode input VBAT in the circuit, the other end of the resistor 5 R5 is connected with one end of the resistor 6 R6 and the pin 2 of the microcontroller U3, and the other end of the resistor 6 R6 is connected to the cathode node AGND of the circuit. The pin 14 of the microcontroller U3 and one end of the resistor 6 R6 are connected to the anode output VDD of the circuit, and the other end of the resistor 6 R6 is connected with the pin 15 of the microcontroller U3 and the cathode node AGND of the circuit; the pin 17 of the microcontroller U3 is respectively connected with one end of the capacitor 14 C14 and one end of the crystal oscillator Y, and the other end of the capacitor 14 C14 is connected to the power cathode GND in the circuit. The pin 18 of the microcontroller U3 is respectively connected with one end of the capacitor 15 C15 and the other end of the crystal oscillator Y, the other end of the capacitor 15 C15 is connected to the power cathode GND of the circuit, and the pin 21 of the microcontroller U3 is connected with one end of the resistor 3 R3, the other end of the resistor 3 R3 is connected to the power cathode GND of the circuit. The pin 23 of the microcontroller U3 is respectively connected with one end of the resistor 4 R4 and one end of the capacitor 16 C16, the other end of the resistor 4 R4 and one end of the capacitor 17 C17 are connected to the anode output VDD of the circuit, the other end of the capacitor 17 C17 is connected to the power cathode GND of the circuit, and the other end of the capacitor 16 C16 is connected with the pin 26 of the microcontroller U3. The pin 32 of the microcontroller U3 and one end of the capacitor 7 C7 are connected with the anode output VDD of the circuit, and the other end of the capacitor 7 C7 is connected with the power cathode GND of the circuit. The pin 48 of the microcontroller U3 and one end of the capacitor 8 C8 are connected with the anode output VDD of the circuit, and the other end of the capacitor 8 C8 is connected with the power cathode GND of the circuit.
In the three dimensional angle measuring device, the power module includes a relay, a voltage regulator module Ul and a power circuit, wherein the power circuit includes a capacitor 1 C1, a capacitor 2 C2, a capacitor 3 C3, a capacitor 4 C4, a capacitor 5 C5, a voltage regulator module U1, a resistor 1 R1, a resistor 2 R2, a triode 1 Q1 and a triode 2 Q2, wherein the triode 1 Q1 is a MOS tube, and the capacitor 1 C1, the capacitor 4 C4 and the capacitor 5 C5 are electrolytic capacitors. The anode input VBAT node in the circuit is connected with the pin 1 of the relay J, the anode of the capacitor 1 C1, one end of the capacitor 2 C2 and the pins 1 and 3 of the voltage regulator module U1. The cathode GND of the circuit is connected with the pin 2 of the relay J, the other end of the capacitor 1 C1, the other end of the capacitor 2 C2, the pin 2 of the voltage regulator module U1, one end of the capacitor 3 C3 and the cathode of the capacitor 4 C4. The anode output VDD of the circuit is connected with the pin 5 of the voltage regulator module U1, the other end of the capacitor 3 C3, the anode of the capacitor 4 C4, one end of the resistor 1 R1 and a source electrode of the triode 1 Q1. The other end of the resistor 1 R1 is connected with a grid of the triode 1 Q1 and a collector electrode of the triode 2 Q2, a drain electrode of the triode 1 Q1 is connected with the anode output VCC of the circuit and the anode of the capacitor 5 C5, the cathode of the capacitor 5 C5 is grounded, and a base electrode of the triode 2 Q2 is connected with one end of the resistor 2 R2, an emitter electrode of the triode 2 Q2 is connected to the cathode GND of the circuit, and the other end of the resistor 2 R2 is connected to the pin 3 of the microcontroller U3.
In the three dimensional angle measuring device, the key module includes angle measurement function keys, calculator keys and a keying circuit, wherein the total number of the angle measurement function keys and the calculator keys are 26, including: key 1 SW1-key 26 SW26. The keying circuit are as follows: key 1 SW1-key 26 SW26 are arranged in a matrix form, wherein, ordered in row, one pin of key 1 SW1-key 5 SW5 are connected to a network KS01, one pin of key 6 SW6-key 10 SW10 are connected to a network KS02, one pin of key 11 SW11-key 15 SW15 are connected to a network KS03, one pin of key 16 SW16-key 20 SW20 are connected to a network KS04, one pin of key 21 SW21-key 25 SW25 are connected to a network KS05, and one pin of key 26 SW26 is connected to a network KS06; and ordered in line, the other pin of key 1 SW1, key 6 SW6, key 11 SW11, key 16 SW16, key 21 SW21 and key 26 SW26 are connected to a network KS11, the other pin of key 2 SW2, key 7 SW7, key 12 SW12, key 17 SW17 and key 22 SW22 are connected to a network KS12, the other pin of key 3 SW3, key 8 SW8, key 13 SW13, key 18 SW18 and key 23 SW23 are connected to a network KS13, the other pin of key 4 SW4, key 9 SW9, key 14 SW14, key 19 SW19 and key 24 SW24 are connected to a network KS14, and the other pin of key 5 SW5, key 10 SW10, key 15 SW15, key 20 SW20 and key 25 SW25 are connected to a network KS15. Networks KS11-KS15 are sequentially connected to the pins 4, 5, 6, 7 and 8 of the microcontroller U3, respectively. Networks KS01-KS15 are sequentially connected to the pins 4, 5, 6, 7 and 8 of the microcontroller U3, respectively; and networks KS01-KS06 are respectively connected to the pins 9, 10, 11, 12, 13 and 16 of the microcontroller U3.
In the three dimensional angle measuring device, the sensor module includes a sensor chip U2 and a sensor module circuit, wherein the sensor module circuit are as follows: pins 1 and 10 of the sensor chip U2 are connected to the power anode output VCC, the pin 3 of the sensor chip U2 is connected to the pin 55 of the microcontroller U3, pins 4, 7 and 9 of the sensor chip U2 are connected to the power cathode GND of the circuit, and the pin 5 of the sensor chip U2 is connected to the pin 54 of the microcontroller U3, the pin 6 of the sensor chip
U2 is connected to the pin 53 of the microcontroller U3, and the pin 8 of the sensor chip U2 is connected to the pin 19 of the microcontroller U3.
Further, the sensor chip U2 is a three-axis angle sensor.
In the three dimensional angle measuring device, the display module includes a liquid crystal display LCD, a first liquid crystal display drive integrated chip U4, a second liquid crystal display drive integrated chip U5 and a display module circuit, wherein the liquid crystal display LCD includes a first liquid crystal display window and a second liquid crystal display window, the display module circuit includes a capacitor 10 C10, a capacitor 11 C11, a capacitor 12 C12 and a capacitor 13 C13. Wherein, pins 1-4 of the liquid crystal display LCD are respectively connected to pins 37, 36, 35 and 34 of the microcontroller U3, the pin 5 of the liquid crystal display LCD is connected to one end of the capacitor 11 C11 and the power cathode GND in the circuit. The pin 6 of the liquid crystal display LCD is connected to the other end of the capacitor 11 C11 and the power anode output VCC, pins 7-10 of the liquid crystal display LCD are respectively connected to pins 64, 63, 62 and 61 of the microcontroller U3, the pin 15 of the liquid crystal display LCD is connected to the anode input VBAT node, pins 16-18 of the liquid crystal display LCD are respectively connected to pins 6, 5 and 4 of the first liquid crystal display drive integrated chip U4, pins 6 and 5 of the second liquid crystal display drive integrated chip U5 are respectively connected to pins 19 and 20 of the liquid crystal display LCD. The pin 22 of the liquid crystal display LCD is connected to the pin 33 of the microcontroller U3, pins 23-30 of the liquid crystal display LCD are respectively connected to pins 46, 45, 44, 43, 42, 41, 40 and 39 of the microcontroller U3, the pin 31 of the liquid crystal display LCD is respectively connected to the pin 60 of the microcontroller U3, the pin 32 of the liquid crystal display LCD is connected to the power anode output VCC, the pin 33 of the liquid crystal display LCD and one end of the capacitor 13 C13, the other end of the capacitor 13 C13 is connected to the power cathode GND of the circuit and the pin 34 of the liquid crystal display LCD, and pins 35, 36 and 37 of the liquid crystal display LCD are respectively connected to pins 29, 30 and 31 of the microcontroller U3. One end of the capacitor 10 C10 is connected to the power anode output VCC and the pin 1 of the first liquid crystal display drive integrated chip U4, the other end of capacitor 10 C10 is connected to the power cathode GND of the circuit and the pin 2 of the first liquid crystal display drive integrated chip U4, the pin 3 of the first liquid crystal display drive integrated chip U4 is connected to the pin 3 of the second liquid crystal display drive integrated chip U5 and the pin 59 of the microcontroller U3. One end of the capacitor 12 C12 is connected to the power anode output VCC and the pin 1 of the second liquid crystal display drive integrated chip U5, and the other end of the capacitor 12 C12 is connected to the power cathode GND of the circuit and the pin 2 of the second liquid crystal display drive integrated chip U5.
In the three dimensional angle measuring device, the buzzing module includes a buzzer DZ and a buzzing module circuit, wherein the buzzing module circuit includes a triode 3 Q3 and a resistor 7 R7, wherein, one end of the buzzer DZ is connected to the anode input VBAT node, the other end of the buzzer DZ is connected to the collector electrode of the triode 3 Q3, the emitter electrode of the triode 3 Q3 is connected to the power cathode GND of the circuit, the base electrode of the triode 3 Q3 is connected to one end of the resistor 7 R7, and the other end of the resistor 7 R7 is connected to the pin 52 of the microcontroller U3.
Compared to the existing pointer-type angle measuring device, a three dimensional angle measuring device of the invention has characteristics of high measurement precision, easy operation and more functions.
In
U1: voltage regulator module; U2: sensor chip; U3: microcontroller; U4: liquid crystal display drive integrated chip 1; U5: liquid crystal display drive integrated chip 2; Y: crystal oscillator; K: switch; Q1-Q3: triode 1-triode 3; J: relay; LCD: liquid crystal display; DZ: buzzer; R1-R7: resistor 1-resistor 7;; C1-C17: capacitor 1-capacitor 17; SW1-SW26: key 1-key 26.
By reference to drawings, the invention will be further described by examples.
Referring to
Wherein, the angle measurement function keys 3, the calculator keys 5 and the keying circuit 6c constitute the key module of the three dimensional angle measuring device. The relay J, the voltage regulator module U1 and the power circuit 6b constitute the power module of the three dimensional angle measuring device. The liquid crystal display window 4a, the second liquid crystal display window 4b, the display module circuit 6e, the first liquid crystal display drive integrated chip U4 and the second liquid crystal display drive integrated chip U5 constitute the display module of the three dimensional angle measuring device; the microcontroller U3 and the control circuit 6a constitute the information processing module of the three dimensional angle measuring device. The buzzer DZ and the buzzing module circuit 6f constitute the buzzing module of the three dimensional angle measuring device; and the sensor module circuit 6d and the sensor chip U2 constitute the sensor module of the three dimensional angle measuring device.
When the first horizontal datum plane 10 of the three dimensional angle measuring device is downward, angle state of the object in Z axis can be measured; when the second horizontal datum plane 11 of the three dimensional angle measuring device is downward, angle states of the object in X and Y axes can be measured.
When the first horizontal datum plane 10 of the three dimensional angle measuring device is downward, the first liquid crystal display window 4a on the front cover 1 displays the inclination state of the first horizontal datum plane 10 of the three dimensional angle measuring device around the Z axis. When the first horizontal datum plane 10 of the three dimensional angle measuring device has different inclination angle, the interface scale and reading value will incline along with the first horizontal datum plane 10, while the pointer and the semicircle representing the level bubble as well as three small arrows always keep the space position unchanged, now the scale pointed to by the pointer is the inclination angle of the first horizontal datum plane 10.
When the second horizontal datum plane 11 of the three dimensional angle measuring device is downward, the first liquid crystal display window 4a on the front cover 1 displays the inclination state of the second horizontal datum plane 10 of the three dimensional angle measuring device around the X and Y axes. When the X and Y axes alone or both have different inclination angles, the interface scale and the central cross coordinate of the first liquid crystal display window 4a keep still, while the central dot and two concentric circles representing the universal level bubble as well as the reference cross curve taking the dot center as the coordinate and the arrow indicating the inclination direction move along the inclination direction of the second horizontal datum plane, the direction pointed to by the arrow is the peak of the inclination angle, and the precise value of the inclination angle is displayed on the arrow.
The angle measurement function keys 3 set on the three dimensional angle measuring device has functions of startup and shutdown, self-calibration of measurement datum, keeping measurement values and absolute measurement (taking inclined plane of the object as 0° datum).
When in use, the three dimensional angle measuring device enters the working state immediately after the power switch is turn on. When only the inclination angle of the object in one direction needs to be measured, the first horizontal datum plane 10 of the three dimensional angle measuring device is placed downwards on the plane to be measured, now the first liquid crystal display window 4a displays the angle pointed to by the pointer and the displayed value is the inclination angle of the measured object relative to the horizontal plane. When the inclination angles of the object in two directions need to be measured, the second horizontal datum plane 11 of the three dimensional angle measuring device is placed downwards on the plane to be measured, now the first liquid crystal display window 4a displays direction of movement of the universal level bubble, the direction pointed to by the arrow is the inclination direction of the measured object relative to the horizontal plane, and inclination value is also displayed ahead of the arrow.
Referring to
The information processing module includes a microcontroller U3 and a control circuit 6a, wherein the control circuit 6a includes a crystal oscillator Y, a switch K, a resistor 3 R3, a resistor 4 R4, a resistor 5 R5, a resistor 6 R6, a capacitor 6 C6, a capacitor 7 C7, a capacitor 8 C8, a capacitor 9 C9, a capacitor 14 C14, a capacitor 15 C15, a capacitor 16 C16 and a capacitor 17 C17, wherein one end of the switch K and one end of the capacitor 9 C9 are connected with an anode output VDD of the circuit, the other end of the capacitor 9 C9 is connected with a power cathode GND of the circuit, and the other end of the switch K is connected with the pin 1 of the microcontroller U3. One end of the resistor 5 R5 is connected with the anode input VBAT the circuit, the other end of the resistor 5 R5 is connected with one end of the resistor 6 R6 and the pin 2 of the microcontroller U3, and the other end of the resistor 6 R6 is connected to the cathode node AGND of the circuit. The pin 14 of the microcontroller U3 and one end of the capacitor 6 C6 are connected to the anode output VDD of the circuit, and the other end of the capacitor 6 C6 is connected with the pin 15 of the microcontroller U3 and the cathode node AGND of the circuit. The pin 17 of the microcontroller U3 is respectively connected with one end of the capacitor 14 C14 and one end of the crystal oscillator Y, and the other end of the capacitor 14 C14 is connected to the power cathode GND of the circuit. The pin 18 of the microcontroller U3 is respectively connected with one end of the capacitor 15 C15 and the other end of the crystal oscillator Y, the other end of the capacitor 15 C15 is connected to the power cathode GND in the circuit. The pin 21 of the microcontroller U3 is connected with one end of the resistor 3 R3, the other end of the resistor 3 R3 is connected to the power cathode GND of the circuit, the pin 23 of the microcontroller U3 is respectively connected with one end of the resistor 4 R4 and one end of the capacitor 16 C16. The other end of the resistor 4 R4 and one end of the capacitor 17 C17 are connected to the anode output VDD of the circuit, the other end of the capacitor 17 C17 is connected to the power cathode GND of the circuit, and the other end of the capacitor 16 C16 is connected with the pin 26 of the microcontroller U3. The pin 32 of the microcontroller U3 and one end of the capacitor 7 C7 are connected with the anode output VDD in the circuit, and the other end of the capacitor 7 C7 is connected with the power cathode GND of the circuit. The pin 48 of the microcontroller U3 and one end of the capacitor 8 C8 are connected with the anode output VDD of the circuit, and the other end of the capacitor 8 C8 is connected with the power cathode GND of the circuit.
The power module includes a relay J, a voltage regulator module Ul and a power circuit 6b, wherein the power circuit includes a capacitor 1 C1, a capacitor 2 C2, a capacitor 3 C3, a capacitor 4 C4, a capacitor 5 C5, a resistor 1 R1, a resistor 2 R2, a triode 1 Q1 and a triode 2 Q2. Wherein the triode 1 Q1 is a MOS tube, and the capacitor 1 C1, the capacitor 4 C4 and the capacitor 5 C5 are electrolytic capacitors. The anode input VBAT node of the circuit is connected with the pin 1 of the relay J, the anode of the capacitor 1 C1, one end of the capacitor 2 C2 and pins 1 and 3 of the voltage regulator module U1. The cathode GND of the circuit is connected with the pin 2 of the relay J, the other end of the capacitor 1 C1, the other end of the capacitor 2 C2, the pin 2 of the voltage regulator module U1, one end of the capacitor 3 C3 and the cathode of the capacitor 4 C4. The anode output VDD of the circuit is connected with the pin 5 of the voltage regulator module U1, the other end of the capacitor 3 C3, the anode of the capacitor 4 C4, one end of the resistor 1 R1 and a source electrode of the triode 1 Q1. The other end of the resistor 1 R1 is connected with a grid of the triode 1 Q1 and a collector electrode of the triode 2 Q2, a drain electrode of the triode 1 Q1 is connected with the anode output VCC of the circuit and the anode of the capacitor 5 C5. The cathode of the capacitor 5 C5 is grounded. A base electrode of the triode 2 Q2 is connected with one end of the resistor 2 R2. An emitter electrode of the triode 2 Q2 is connected to the cathode GND of the circuit, and the other end of the resistor 2 R2 is connected to the pin 3 of the microcontroller U3.
The key module includes angle measurement function keys 3, calculator keys 5 and a keying circuit 6c, wherein the total number of the angle measurement function keys 3 and the calculator keys 5 are 26, including: key 1 SW1-key 26 SW26. The keying circuit are as follows: key 1 SW1-key 26 SW26 are arranged in a matrix form, wherein, ordered in row, one pin of key 1 SW1-key 5 SW5 are connected to a network KS01, one pin of key 6 SW6-key 10 SW10 are connected to a network KS02, one pin of key 11 SW11-key 15 SW15 are connected to a network KS03, one pin of key 16 SW16-key 20 SW20 are connected to a network KS04, one pin of key 21 SW21-key 25 SW25 are connected to a network KS05, and one pin of key 26 SW26 is connected to a network KS06; and ordered in line, the other pin of key 1 SW1, key 6 SW6, key 11 SW11, key 16 SW16, key 21 SW21 and key 26 SW26 are connected to a network KS 11, the other pin of key 2 SW2, key 7 SW7, key 12 SW12, key 17 SW17 and key 22 SW22 are connected to a network KS12, the other pin of key 3 SW3, key 8 SW8, key 13 SW13, key 18 SW18 and key 23 SW23 are connected to a network KS13, the other pin of key 4 SW4, key 9 SW9, key 14 SW14, key 19 SW19 and key 24 SW24 are connected to a network KS14, and the other pin of key 5 SW5, key 10 SW10, key 15 SW15, key 20 SW20 and key 25 SW25 are connected to a network KS15. Networks KS11-KS15 are sequentially connected to the pins 4, 5, 6, 7 and 8 of the microcontroller U3, respectively; networks KS01-KS15 are sequentially connected to the pins 4, 5, 6, 7 and 8 of the microcontroller U3, respectively; and networks KS01-KS06 are respectively connected to the pins 9, 10, 11, 12, 13 and 16 of the microcontroller U3.
The sensor module includes a sensor chip U2 and a sensor module circuit 6d, wherein the sensor module circuit are as follows: pins 1 and 10 of the sensor chip U2 are connected to the power anode output VCC, the pin 3 of the sensor chip U2 is connected to the pin 55 of the microcontroller U3, pins 4, 7 and 9 of the sensor chip U2 are connected to the power cathode GND of the circuit, the pin 5 of the sensor chip U2 is connected to the pin 54 of the microcontroller U3, the pin 6 of the sensor chip U2 is connected to the pin 53 of the microcontroller U3, and the pin 8 of the sensor chip U2 is connected to the pin 19 of the microcontroller U3.
The sensor chip U2 is a three-axis angle sensor, and an internal collector can collect analog quantities in X, Y and Z axes direction after the three-axis angle sensor U2 is turned over, and the analog quantities are converted to digital quantities by an internal converter, for measuring angles.
The display module includes a liquid crystal display LCD, a first liquid crystal display drive integrated chip U4, a second liquid crystal display drive integrated chip U5 and a display module circuit 6e. Wherein the liquid crystal display LCD includes a first liquid crystal display window 4a and a second liquid crystal display window 4b, the display module circuit includes a capacitor 10 C10, a capacitor 11 C11, a capacitor 12 C12 and a capacitor 13 C13; wherein, pins 1-4 of the liquid crystal display LCD are respectively connected to pins 37, 36, 35 and 34 of the microcontroller U3, the pin 5 of the liquid crystal display LCD is connected to one end of the capacitor 11 C11 and the power cathode GND of the circuit, the pin 6 of the liquid crystal display LCD is connected to the other end of the capacitor 11 C11 and the power anode output VCC, pins 7-10 of the liquid crystal display LCD are respectively connected to pins 64, 63, 62 and 61 of the microcontroller U3, the pin 15 of the liquid crystal display LCD is connected to the anode input VBAT node, pins 16-18 of the liquid crystal display LCD are respectively connected to pins 6, 5 and 4 of the first liquid crystal display drive integrated chip U4, pins 6 and 5 of the second liquid crystal display drive integrated chip U5 are respectively connected to pins 19 and 20 of the liquid crystal display LCD, the pin 22 of the liquid crystal display LCD is connected to the pin 33 of the microcontroller U3, pins 23-30 of the liquid crystal display LCD are respectively connected to pins 46, 45, 44, 43, 42, 41, 40 and 39 of the microcontroller U3, the pin 31 of the liquid crystal display LCD is respectively connected to the pin 60 of the microcontroller U3, the pin 32 of the liquid crystal display LCD is connected to the power anode output VCC, the pin 33 of the liquid crystal display LCD and one end of the capacitor 13 C13, the other end of the capacitor 13 C13 is connected to the power cathode GND of the circuit and the pin 34 of the liquid crystal display LCD, and pins 35, 36 and 37 of the liquid crystal display LCD are respectively connected to pins 29, 30 and 31 of the microcontroller U3. One end of the capacitor 10 C10 is connected to the power anode output VCC and the pin 1 of the first liquid crystal display drive integrated chip U4, the other end of capacitor 10 C10 is connected to the power cathode GND of the circuit and the pin 2 of the first liquid crystal display drive integrated chip U4, the pin 3 of the first liquid crystal display drive integrated chip U4 is connected to the pin 3 of the second liquid crystal display drive integrated chip U5 and the pin 59 of the microcontroller U3. One end of the capacitor 12 C12 is connected to the power anode output VCC and the pin 1 of the second liquid crystal display drive integrated chip U5, and the other end of the capacitor 12 C12 is connected to the power cathode GND in the circuit and the pin 2 of the second liquid crystal display drive integrated chip U5.
The buzzing module includes a buzzer DZ and a buzzing module circuit 6f, wherein the buzzing module circuit includes a triode 3 Q3 and a resistor 7 R7, wherein, one end of the buzzer DZ is connected to the anode input VBAT node, the other end of the buzzer DZ is connected to the collector electrode of the triode 3 Q3, the emitter electrode of the triode 3 Q3 is connected to the power cathode GND of the circuit, the base electrode of the triode 3 Q3 is connected to one end of the resistor 7 R7, and the other end of the resistor 7 R7 is connected to the pin 52 of the microcontroller U3.
Operating principles of the three dimensional angle measuring device are as follows:
The three dimensional angle measuring device supplies power for the whole system by batteries, the sensor chip U2 collects angle signals, the information processing module calculates the present angle and sends the present angle to the liquid crystal display LCD for displaying; during measurement, when the three dimensional angle measuring device rotates to 0°, 45° and 90°, the buzzer will sound, so as to prompt users.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410487585.4 | Sep 2014 | CN | national |
