A level tilt alarm device and a level

Abstract

This utility model provides a level tilt alarm device and a level instrument, including a control module, a gyroscope, an alarm module, and a power module. The control module includes a microcontroller, which receives and analyzes the monitoring data from the gyroscope and controls the alarm module to sound an alarm. The gyroscope is connected to the microcontroller. The alarm module includes a sound alarm module, a light alarm module, and a connector. The sound alarm module and the light alarm module are electrically connected to the microcontroller and the connector, respectively, and the connector is electrically connected to the microcontroller. The level tilt alarm device and level instrument described in this utility model monitor the tilt angle of the level instrument through the gyroscope. The alarm module integrates sound and light alarm modules, with a buzzer built into the eyepiece mount providing auditory cues and an alarm light located inside the eyepiece barrel providing visual warnings, forming a dual alarm mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of measuring instrument technology, and in particular relates to a level tilt alarm device and a level. Background Technology

[0002] In the field of surveying, the level is a crucial instrument for measuring elevation and horizontal position, and its measurement accuracy directly affects the quality of engineering construction, topographic mapping, and other work. Currently, traditional levels primarily determine whether the instrument is level by using a bubble mounted on the upper surface of the level mount. When the bubble is centered, the level is level; if it deviates from the center, it indicates tilting.

[0003] However, this method of judgment has significant flaws. In actual surveying operations, workers' attention is often highly focused on eyepiece observation and data recording, making it difficult to detect even slight tilting of the level instrument. Furthermore, surveying work typically employs segmented measurement, dividing a large survey area into multiple smaller segments for measurement before data integration. In this mode, errors from previous measurements accumulate as the survey progresses, causing subsequent measurements to continuously deviate from the true values, ultimately resulting in a chain of errors. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model aims to propose a level instrument tilt alarm device and a level instrument, which solves the problem that workers may not easily detect slight tilt of the level instrument during surveying. The level instrument tilt alarm device is equipped with sound and light alarm modules, which can provide an alarm when the level instrument tilts slightly, thereby improving the accuracy of measurement.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A tilt alarm device for a level instrument includes a control module, a gyroscope, an alarm module, and a power module. The power module supplies power to the control module, the gyroscope, and the alarm module. The control module includes a microcontroller, which is used to receive and analyze monitoring data from the gyroscope and to control the alarm module to sound an alarm.

[0007] The fourth pin of the gyroscope is connected to the seventh pin of the microcontroller; the ninth pin of the gyroscope is connected to the sixth pin of the microcontroller; the thirteenth pin of the gyroscope is connected to the ninth pin of the microcontroller; and the fourteenth pin of the gyroscope is connected to the eighth pin of the microcontroller.

[0008] The alarm module includes a sound alarm module, a light alarm module, and a connector. The sound alarm module and the light alarm module are electrically connected to the microcontroller and the connector, respectively. The connector is electrically connected to the microcontroller.

[0009] Furthermore, the preset alarm value of the microcontroller is when the tilt angle of the level is less than or equal to 0.5 degrees.

[0010] Furthermore, the control module also includes a connection port, the seventh pin of which is connected to the fifth pin of the microcontroller, the thirteenth and fourteenth pins of the microcontroller are connected to the first and second pins of the connection port respectively, and the fourth and fifth pins of the connection port are connected to a power button, which is used to control the power module to turn on and off.

[0011] Furthermore, the sound alarm module includes a first transistor, a diode, and a buzzer. The base of the first transistor is connected to the eighteenth pin of the microcontroller. The emitter of the first transistor is grounded, and the collector is connected to the positive terminal of the diode and the fourth pin of the connector, respectively. The third pin of the connector and the negative terminal of the diode are both connected to the power supply module. The third and fourth pins of the connector are connected to the positive and negative terminals of the buzzer, respectively.

[0012] Furthermore, the light alarm module includes a second transistor, a resistor, and an alarm lamp. The base of the second transistor is connected to the fourth pin of the microcontroller; the emitter of the second transistor is grounded, and the collector is connected to the sixth pin of the connector. The fifth pin of the connector is connected to the power supply module; the fifth and sixth pins of the connector are connected to the positive and negative terminals of the alarm lamp, respectively; and the first pin of the connector is connected to the eleventh pin of the microcontroller.

[0013] Furthermore, the second pin of the connector is grounded, and the first and second pins of the connector are connected to a reset button, which is used to reset the state of the buzzer and the alarm light.

[0014] Furthermore, the alarm light is an LED light that emits a red light source.

[0015] Furthermore, the microcontroller model is PY32F002AF15P6TU, the gyroscope model is LSM6DS3TR-C, and the connector model is FPC-05F-6PH20.

[0016] Furthermore, the power module includes two dry cell batteries connected in series, each with a voltage of 1.5V.

[0017] A level instrument with a tilt alarm device includes a level instrument body mounted on a mirror base, with a circular bubble mounted on the upper surface of the mirror base; a tilt alarm device is installed inside the mirror base, with the power button of the control module symmetrically mounted on the upper surface of the mirror base along with the circular bubble; a buzzer is located inside the mirror base, and an alarm light is installed inside the eyepiece tube; a power supply box is installed on the top of the level instrument body near the eyepiece, with a power supply module installed inside the power supply box, and a reset button is located on the power supply box.

[0018] Compared with the prior art, the level tilt alarm device and level of this utility model have the following advantages:

[0019] The tilt alarm device and level described in this utility model monitor the tilt angle of the level using a gyroscope. The alarm module integrates sound and light alarm modules. A buzzer built into the eyepiece provides audible cues, while an alarm light inside the eyepiece provides visual warning, forming a dual alarm mechanism. In noisy construction environments, the light alarm compensates for the sound alarm being easily masked, significantly improving the effectiveness and applicability of the alarm. The power button and the bulb are symmetrically mounted on the upper surface of the eyepiece base, conforming to ergonomics and facilitating quick operation by the operator when adjusting the level. The reset button is integrated into the power box, allowing for one-button reset of the alarm device to zero after leveling, simplifying the calibration process. An FPC connector enables modular connection of the buzzer and alarm light, facilitating equipment maintenance and component replacement. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 The control module circuit diagram provided for the embodiments of this utility model;

[0022] Figure 2 A connection port circuit diagram provided for an embodiment of this utility model;

[0023] Figure 3 A gyroscope circuit diagram provided for an embodiment of this utility model;

[0024] Figure 4 The alarm module circuit diagram provided for the embodiments of this utility model;

[0025] Figure 5 A top view of a level provided in an embodiment of this utility model;

[0026] Figure 6 Assembly diagram of the tilt alarm device and level provided in the embodiments of this utility model;

[0027] Figure 7 A side view of a level provided for an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Level instrument body; 2. Mirror base; 3. Bulb; 4. Power button; 5. Buzzer; 6. Alarm light; 7. Eyepiece; 8. Power supply box; 9. Reset button. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 7 As shown, a level tilt alarm device includes a control module, a gyroscope, an alarm module, and a power supply module. The gyroscope is used to monitor the tilt angle of the level, and the power supply module outputs power VCC to power the control module, the gyroscope, and the alarm module.

[0035] The component models in this embodiment are as follows: the microcontroller U1 is model PY32F002AF15P6TU. The microcontroller U1 is used to receive and analyze the monitoring data of the gyroscope and control the alarm module to alarm. The microcontroller U1 has a comparison function, and the monitoring data of the gyroscope can be analyzed by setting parameters.

[0036] The gyroscope U4 model is LSM6DS3TR-C, and the connector FPC1 model is FPC-05F-6PH20.

[0037] The resistance of resistors R1, R2, R4, and R5 is 100Ω; the resistance of resistors R3, R6, R7, R8, R9, and R10 is 10KΩ; and the resistance of resistors R11, R12, and R13 is 0Ω.

[0038] Capacitors C1, C2, C3, C4, and C5 have a capacitance of 100nF. They are all connected in parallel between the power supply VCC and GND for filtering, effectively removing noise and interference signals from the power supply and ensuring the stable operation of the chip.

[0039] The first transistor Q1 and the second transistor Q2 are both SS8050 (RANGE: 200-350), and the diode D1 is SM4007PL.

[0040] In a preferred embodiment of this utility model, the control module includes a microcontroller U1 and a connection port J2. The first pin of the microcontroller U1 is grounded, and the tenth pin is connected to the power supply VCC through a resistor R3 and filtered by a capacitor C3. The twentieth pin of the microcontroller U1 is connected to the power supply VCC and filtered by a capacitor C2.

[0041] The fifth pin of the microcontroller U1 is connected to the seventh pin of the connection port J2, and the seventh pin of the connection port J2 is grounded through resistor R10; the thirteenth and fourteenth pins of the microcontroller U1 are connected to the first and second pins of the connection port J2, respectively; the third and fourth pins of the connection port J2 are grounded, and the fifth pin is connected to the power supply VCC; the fourth and fifth pins of the connection port J2 are connected to the power button 4.

[0042] Specifically, pin 10 of microcontroller U1 is a low-level active reset pin, and pull-up resistor R3 (10kΩ) ensures that the system remains high after power-on (normal operating state). When the power button is not pressed: pin 4 is high, the microcontroller detects the high-level signal, and the system remains in standby or power-off state. When the button is pressed: pin 4 is pulled low to GND, the microcontroller detects the low-level transition, and starts the power module to supply power to the gyroscope and alarm module.

[0043] In a preferred embodiment of this utility model, the first, second, and third pins of the gyroscope U4 are all grounded; the fourth pin of the gyroscope U4 is connected to the seventh pin of the microcontroller U1 through resistor R13; the fifth pin of the gyroscope U4 is connected to the power supply VCC and filtered by capacitor C4; the sixth and seventh pins of the gyroscope U4 are both grounded; the eighth pin of the gyroscope U4 is connected to the power supply VCC and filtered by capacitor C5; the ninth pin of the gyroscope U4 is connected to the sixth pin of the microcontroller U1; the twelfth pin of the gyroscope U4 is connected to the power supply VCC through resistor R11; the thirteenth pin of the gyroscope U4 is connected to the ninth pin of the microcontroller U1 and connected to the power supply VCC through resistor R9; and the fourteenth pin of the gyroscope U4 is connected to the eighth pin of the microcontroller U1 and connected to the power supply VCC through resistor R8.

[0044] Specifically, gyroscope U4 is a six-axis inertial measurement unit, integrating a three-axis gyroscope and a three-axis accelerometer. It can measure the angular velocity and linear acceleration of an object. Data is transmitted to the microcontroller U1 via an I2C connection port (pins 13 and 14 of gyroscope U4). After reading the data from gyroscope U4, microcontroller U1 fuses the accelerometer and gyroscope data using an algorithm to calculate the tilt angle of the level. The calculated angle is compared with a preset threshold (less than or equal to 0.5°). If the angle exceeds the threshold, an alarm module is triggered.

[0045] In a preferred embodiment of this utility model, the alarm module includes a sound alarm module, a light alarm module, and a connector FPC1. The sound alarm module includes resistors R4 and R6, a first transistor Q1, resistor R1, diode D1, and a buzzer. The base of the first transistor Q1 is connected to the eighteenth pin of the microcontroller U1 through resistor R4 and grounded through resistor R6. The emitter of the first transistor Q1 is grounded, and the collector is connected to the anode of diode D1 and the fourth pin of connector FPC1 through resistor R1. The third pin of connector FPC1 and the cathode of diode D1 are both connected to the power supply VCC. The third and fourth pins of FPC1 are connected to the anode and cathode of the buzzer, respectively.

[0046] Specifically, in standby mode: pin 18 of microcontroller U1 outputs a low level, the transistor is cut off, no current flows through the buzzer, and it does not sound. Alarm trigger: When microcontroller U1 detects that the tilt angle exceeds the threshold, pin 18 of microcontroller U1 outputs a high level, the first transistor Q1 conducts, the buzzer operates, and the power supply VCC forms a current loop through connector FPC1 pin 3 → buzzer → connector FPC1 pin 4 → resistor R1 → collector of first transistor Q1 → GND, causing the buzzer to sound.

[0047] The reverse electromotive force generated when the buzzer is powered off is discharged through diode D1 (SM4007PL), preventing transistor Q1 from breaking down. The combination of diode D1 and transistor Q1 effectively suppresses the impact of power failure on the inductive load, improving circuit reliability. FPC connectors are used to achieve modular connection of the buzzer, balancing structural compactness and maintainability.

[0048] In a preferred embodiment of this utility model, the light alarm module includes resistors R5 and R7, a second transistor Q2, an alarm lamp, and a second transistor Q2. The base of the second transistor Q2 is connected to the fourth pin of the microcontroller U1 through resistor R5 and grounded through resistor R7. The emitter of Q2 is grounded, and the collector is connected to the sixth pin of connector FPC1 through resistor R2. The fifth pin of connector FPC1 is connected to the power supply VCC. The fifth and sixth pins of connector FPC1 are connected to the positive and negative terminals of the alarm lamp, respectively. The first pin of connector FPC1 is connected to the eleventh pin of microcontroller U1 and is filtered by capacitor C1.

[0049] Specifically, in standby mode: pin 4 of microcontroller U1 outputs a low level, transistor Q2 is cut off, no current flows through the alarm light, and it does not light up. In this embodiment, the alarm light is an LED that emits red light. Alarm triggering: When microcontroller U1 detects that the tilt angle exceeds the threshold, pin 4 outputs a high level, transistor Q2 conducts, and the alarm light operates: power supply VCC forms a current loop through connector FPC1 pin 5 → alarm light → connector FPC1 pin 6 → resistor R2 → collector of transistor Q2 → GND, causing the alarm light to illuminate.

[0050] The alarm light is connected via pins 5 and 6 of FPC1, allowing for flexible installation inside the eyepiece of a level instrument for easy observation. It uses a red light source, with current adjusted via resistor R2, ensuring the alarm light's brightness exceeds ambient light levels and remains clearly visible even in strong light.

[0051] In a preferred embodiment of this utility model, the second pin of the connector FPC1 is grounded, and the first and second pins of the connector FPC1 are connected to the reset button 9.

[0052] Specifically, pressing the reset button sends a low-level signal from microcontroller U1 to the sound alarm module (pin 18) and the light alarm module (pin 4). This cuts off transistors Q1 and Q2, stopping the buzzer and extinguishing the alarm light. Once the level instrument returns to balance, the reset button clears any false alarms, preventing continuous alarm interference. Resetting both the buzzer and alarm light simultaneously with a single reset button 9 simplifies the operation and improves the user experience.

[0053] In a preferred embodiment of this utility model, the power module includes two dry cell batteries connected in series, and the voltage of the dry cell batteries is 1.5V.

[0054] Specifically, the microcontroller U1 operates at a voltage of 2.0–3.6V, which falls precisely within its optimal operating range when powered by two dry cell batteries (3V). This prevents chip overload due to excessively high voltage or abnormal reset due to excessively low voltage. No charging circuit is required, saving PCB space and eliminating the need for user charging. Users can directly replace the batteries, making it suitable for field operations and enhancing product usability.

[0055] A level instrument with a tilt alarm device includes a level instrument body 1, which is mounted on a mirror base 2. A circular bubble 3 is mounted on the upper surface of the mirror base 2. A tilt alarm device is installed inside the mirror base 2. The power button 4 of the control module is symmetrically mounted on the upper surface of the mirror base 2 along with the circular bubble 3. A buzzer 5 is located inside the mirror base 2. An alarm light 6 is installed inside the tube of the eyepiece 7. A power supply box 8 is installed on the top of the level instrument body 1 near the eyepiece 7. A power supply module is installed inside the power supply box 8. A reset button 9 is located on the power supply box 8.

[0056] The control module, gyroscope, and alarm module are mounted on a circuit board, which is attached to the bottom of the mirror mount 2.

[0057] Specifically, the level instrument body 1 relies on the mirror mount 2 as its supporting foundation, and the circular bubble 3 serves as the traditional benchmark for level judgment, complementing the tilt alarm device. When the level instrument is level, the circular bubble 3 is centered, and the tilt alarm device is in standby mode; when the level instrument tilts, the circular bubble 3 deviates from the center, at which point the gyroscope of the tilt alarm device starts working, monitoring the tilt angle data and transmitting it to the control module.

[0058] The power button 4 and the round bubble 3 are symmetrically mounted on the upper surface of the mirror base 2, so that the operator can quickly operate the power button 4 while observing the round bubble 3.

[0059] The buzzer 5 is placed inside the mirror base 2, which ensures that the sound can be effectively transmitted to remind the operator, avoids the potential impact damage to the buzzer 5 if it is exposed to the outside, and does not affect the simplicity and aesthetics of the overall appearance of the level.

[0060] The alarm light 6 is installed inside the eyepiece 7. When the operator is using the level instrument, their line of sight is naturally focused on the eyepiece 7. When the alarm light 6 is lit, it can attract attention immediately. Compared with other locations, it significantly improves the efficiency of alarm information transmission.

[0061] The working principle of a level instrument that uses a tilt alarm device:

[0062] After turning on the power button 4, if the level is tilted, the buzzer 5 will sound and the alarm light 6 will light up. The operator can adjust the level until the bubble 3 is centered using the foot screws. After leveling, the buzzer 5 and the alarm light 6 will turn off. Then, press the reset button 9 on the power box 8. The tilt alarm device will record the current balance point as zero and set the level tilt angle detection threshold (less than or equal to 0.5°).

[0063] When the bubble deviates from the outer ring of the circular bubble 3, that is, when the level loses its measurement reference, the gyroscope detects the imbalance of the main body of the mirror base 2. The microcontroller U1 determines whether the tilt angle of the level exceeds the threshold based on the imbalance data captured by the gyroscope. If it exceeds the threshold, the control module drives the buzzer 5 in the mirror base 2 to sound, and at the same time, the alarm light 6 located in the eyepiece 7 tube lights up, emitting a red light that exceeds the brightness of the background light source, issuing a dual visual and auditory alarm to the operator, indicating that the level is unbalanced and needs to be readjusted until the bubble returns to the center of the circular bubble 3.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A level tilt alarm device, characterized in that: It includes a control module, a gyroscope, an alarm module, and a power module. The power module supplies power to the control module, the gyroscope, and the alarm module. The control module includes a microcontroller, which is used to receive and analyze the level tilt data transmitted by the gyroscope and to control the alarm module to sound an alarm. The fourth pin of the gyroscope is connected to the seventh pin of the microcontroller; the ninth pin of the gyroscope is connected to the sixth pin of the microcontroller; the thirteenth pin of the gyroscope is connected to the ninth pin of the microcontroller; and the fourteenth pin of the gyroscope is connected to the eighth pin of the microcontroller. The alarm module includes a sound alarm module, a light alarm module, and a connector. The sound alarm module and the light alarm module are electrically connected to the microcontroller and the connector, respectively. The connector is electrically connected to the microcontroller.

2. The level tilt alarm device according to claim 1, characterized in that: The alarm threshold of the single-chip microcomputer-controlled alarm module is that the tilt angle of the level is less than or equal to 0.5 degrees.

3. The level tilt alarm device according to claim 1, characterized in that: The control module also includes a connection port. The seventh pin of the connection port is connected to the fifth pin of the microcontroller. The thirteenth and fourteenth pins of the microcontroller are connected to the first and second pins of the connection port, respectively. The fourth and fifth pins of the connection port are connected to the power button, which is used to control the power module to turn on and off.

4. The level tilt alarm device according to claim 3, characterized in that: The sound alarm module includes a first transistor, a diode, and a buzzer. The base of the first transistor is connected to the eighteenth pin of the microcontroller. The emitter of the first transistor is grounded, and the collector is connected to the positive terminal of the diode and the fourth pin of the connector. The third pin of the connector and the negative terminal of the diode are both connected to the power supply module. The third and fourth pins of the connector are connected to the positive and negative terminals of the buzzer, respectively.

5. The level tilt alarm device according to claim 4, characterized in that: The light alarm module includes a second transistor, a resistor, and an alarm lamp. The base of the second transistor is connected to the fourth pin of the microcontroller. The emitter of the second transistor is grounded, and the collector is connected to the sixth pin of the connector. The fifth pin of the connector is connected to the power supply module. The fifth and sixth pins of the connector are connected to the positive and negative terminals of the alarm lamp, respectively. The first pin of the connector is connected to the eleventh pin of the microcontroller.

6. The level tilt alarm device according to claim 5, characterized in that: The second pin of the connector is grounded, and the first and second pins of the connector are connected to a reset button, which is used to reset the state of the buzzer and the alarm light.

7. The level tilt alarm device according to claim 5, characterized in that: The alarm light is an LED light, and the LED light has a red light source.

8. The level tilt alarm device according to claim 1, characterized in that: The power module includes two dry cell batteries connected in series, each with a voltage of 1.5V.

9. The level tilt alarm device according to claim 1, characterized in that: The microcontroller model is PY32F002AF15P6TU, the gyroscope model is LSM6DS3TR-C, and the connector model is FPC-05F-6PH20.

10. A level instrument with a tilt alarm device, comprising a level instrument body, the level instrument body being mounted on a mirror base, and a circular bubble being mounted on the upper surface of the mirror base, characterized in that: The level tilt alarm device according to claim 6 is installed inside the mirror base. The power button of the control module is symmetrically installed on the upper surface of the mirror base with the circular bubble. The buzzer is located inside the mirror base, and the alarm light is installed inside the eyepiece tube. A power box is installed on the top of the level body near the eyepiece. A power module is installed inside the power box, and the reset button is located on the power box.

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