CN201935690U - Electronic level - Google Patents

Abstract

The utility model discloses an electronic level ruler. An acceleration sensor, a single-chip microcomputer and an LED display circuit are installed on an ordinary ruler. The single-chip microcomputer is connected with the acceleration sensor and the LED display circuit respectively. The lamp shows the output signal, and an LED lamp is arranged at the center of the ruler, and the same number of LED lamps are symmetrically arranged on the ruler from the center to the left and right. The device of the utility model is lighter, more sensitive, more stable and reliable, and has simple circuits, fewer components, low cost, strong anti-interference ability, fast and accurate response, and the combination of software and hardware can enable the device to perform program adjustment in different environments.

Description

electronic level

technical field

The utility model belongs to the field of electronic technology, and belongs to a measuring instrument for measuring plane levelness, in particular to an electronic level.

Background technique

At present, a water bubble measurement method is widely used to measure the flatness of the plane. The position of the bubble is changed by the flow of water to approximate the flatness of the plane. However, this method has obvious defects and is greatly affected by the environment. Fragile and inaccurate measurements.

Contents of the invention

The purpose of the utility model is to provide an electronic level, which solves the problems of the existing levelness measuring instruments, such as large volume, easy interference by external factors and low measurement accuracy.

The technical solution adopted by the utility model is: an electronic level ruler, an acceleration sensor, a single-chip microcomputer and an LED display circuit are installed on an ordinary ruler, and the single-chip microcomputer is connected with the acceleration sensor and the LED display circuit respectively.

The beneficial effects of the utility model are: the measuring device is lighter, more sensitive, more stable and reliable, and the circuit is simple, the components are few, the cost is low, the anti-interference ability is strong, the response is fast and accurate, and the combination of software and hardware can make the device work in different environments. Adjust the program below.

Description of drawings

Fig. 1 is the connection block diagram of the level ruler of the present utility model.

In the figure, 1. Acceleration sensor, 2. Single-chip microcomputer, 3. LED display circuit.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the structure of the utility model device is that an acceleration sensor 1, a single-chip microcomputer 2 and an LED display circuit 3 are installed on a common ruler, and the single-chip microcomputer 2 is connected with the acceleration sensor 1 and the LED display circuit 3 respectively, and the LED display circuit 3 passes through 15 parallel LED lights display the output signal. There is one LED light in the center of the ruler, and 7 LED lights are set from the center to the left and right of the ruler. When the plane is horizontal or inclined to a certain direction, the corresponding LED light will be on. Single-chip microcomputer 2 has selected the MSP430 type for use, and a power supply and a control switch are also arranged on the ruler.

The acceleration sensor 1 contains three different output axes of X, Y, and Z, which correspond to the acceleration components of the acceleration in the three directions of space. The Y-axis direction is used here. When the level is tilted horizontally, the acceleration of gravity is in the Y-axis direction. There is one component, which corresponds to outputting different analog quantities.

The working principle of the utility model device is: MSP430 controls different LEDs through the different analog quantities output by the acceleration sensor, and the P1.0~P1.7, P2.0~P2.6 of the single chip microcomputer have fifteen IOs in total. The ports are connected to fifteen LEDs respectively. Select the y-axis of the acceleration sensor as the reference axis. When the plane is tilted, the gravitational acceleration has a component on the y-axis, which can be converted into a voltage signal through the single-chip microcomputer, and can output different voltage values with the change of the acceleration component to control different LEDs. Bright, you can judge the level of the plane. When it is horizontal, the middle light is on, and when it is tilted, the seven lights on the left and right can light up different lights according to the direction and angle of the tilt.

The electronic level ruler of the utility model can not only measure the levelness of the plane more accurately, but also can measure the approximate angle of the plane inclination, which is beneficial to the improvement of the plane. Because it is controlled by a single-chip microcomputer, it is less affected by the outside world, and the cost is lower, so it is more suitable for mass promotion. And if it is improved, the LED is replaced with a digital tube and other aspects are improved, it can become an angle measuring device, the device is more dexterous, and the measurement accuracy and accuracy have been steadily improved.

Claims (2)

1. An electronic level ruler is characterized in that: an acceleration sensor (1), a single-chip microcomputer (2) and an LED display circuit (3), a single-chip microcomputer (2), an acceleration sensor (1), and an LED display circuit are installed on a common ruler. Circuits (3) are connected separately. 2. The electronic spirit level according to claim 1, characterized in that: the LED display circuit (3) displays the output signal through a plurality of parallel LED lights, and an LED light is set in the center of the ruler, and the ruler is from The same number of LED lamps are arranged symmetrically from the center to the left and right.