CN210346699U

CN210346699U - Novel sensor and laser level meter using same

Info

Publication number: CN210346699U
Application number: CN201921651605.1U
Authority: CN
Inventors: 陆建红; 彭公新; 王小军
Original assignee: Laisai Optoelectronics Technology Co ltd
Current assignee: Laisai Optoelectronics Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-04-17
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a novel sensor and a laser level meter using the same, wherein the sensor comprises a base, two forward level detection components and two reverse level detection components which are arranged on the base; the forward and reverse horizontal detection assemblies have the same structure and comprise: the leveling instrument comprises a photoelectric emitter and a photosensitive receiver which are symmetrically and parallelly arranged right below and right above the leveling instrument respectively; a connecting line of the central points of the photoelectric emitter and the photosensitive receiver penetrates through the central point of the level, and the connecting line is vertically distributed with the level; when the level is in a horizontal state, the light rays output by the photoelectric emitter can cover the light receiving surface of the photosensitive receiver, and the parts covered by the light rays on the light receiving surface are symmetrically distributed; when the level is tilted, the light-covered portions are not symmetrically distributed. Based on the principle, the instrument can realize bidirectional automatic leveling, and when the laser level meter is placed in a positive and negative mode, the laser level meter can provide accurate horizontal, vertical or special reference.

Description

Novel sensor and laser level meter using same

Technical Field

The utility model relates to a novel sensor and its application on laser level meter belongs to the instrument and meter field.

Background

In the prior art, the electronic automatic leveling laser level product provides an accurate horizontal reference by utilizing the characteristic that bubbles in a high-precision long level (or round level) can be accurately reset under the action of a gravity field, then establishes a three-dimensional space reference by arranging a laser which is horizontal and vertical or forms a special angle with the laser on the reference, and can only be placed upwards to work in a single direction according to the working principle of a conventional sensor in the prior art, if the sensor is inverted, a signal disappears, the function is disordered, and the function of accurate measurement cannot be realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a novel sensor and its application on laser level appearance, on this sensor was applied to laser level appearance, realized laser level appearance's positive and negative two-way ann ping, also can realize automatic ann ping when just, anti-placing.

For realizing the utility model aims at, the novel sensor of this application includes: two forward horizontal detection assemblies and two reverse horizontal detection assemblies which are arranged on the base; the forward and reverse horizontal detection assemblies have the same structure and both comprise: the leveling instrument comprises a photoelectric emitter and a photosensitive receiver which are symmetrically and parallelly arranged right below and right above the leveling instrument respectively; when the level is in a horizontal state, the light rays output by the photoelectric emitter can cover the light receiving surface of the photosensitive receiver, and the parts covered by the light rays on the light receiving surface are distributed symmetrically; when the level is tilted, the light-covered portions are not symmetrically distributed. Based on the principle, the instrument can realize bidirectional automatic leveling, and when the laser level meter is placed in a positive and negative mode for use, the laser level meter can provide accurate horizontal, vertical or special reference.

Preferably, the forward and reverse horizontal detection assemblies are respectively arranged at the upper and lower sides of the base so as to facilitate assembly.

Preferably, the levels in the two positive level detection assemblies are arranged in the same plane or respectively on two parallel planes, and the two levels are not parallel (further preferably, the two levels are vertically distributed with each other).

Preferably, the levels of the two reverse level detection assemblies are arranged in the same plane or respectively on two parallel planes, and the two levels are not parallel (more preferably, the two levels are vertically distributed with each other).

Preferably, a connecting line of the central points of the photoelectric emitter and the photosensitive receiver passes through the central point of the level, and the connecting line is vertically distributed with the level, so that the accuracy of horizontal placement is further improved.

Preferably, the light receiving surface of the photosensitive receiver comprises a pair of symmetrically distributed photosensitive element arrays.

The laser level meter comprises a main control circuit connected with a pair of photosensitive element arrays of the photosensitive receiver, and the main control circuit detects the voltage output by the pair of photosensitive element arrays to judge whether the level meter is in a horizontal state or not.

Preferably, a pair of three laser emitters vertically distributed to each other is further disposed on the base, and are used for generating three laser beams or laser planes vertically distributed to each other.

Preferably, the main control circuit includes: a CPU; the LED indicator light and the display screen are connected with the CPU; a button circuit and a remote control circuit connected with the CPU, which are used for switching on and off the forward and reverse horizontal detection components and the three laser transmitters; the angle sensor is connected with the CPU and used for judging the forward and reverse arrangement of the laser level meter; the laser control circuit is connected with the CPU and used for driving the three laser transmitters to work; and a sensor signal processing circuit connected to the CPU for controlling the light emission of the photoemitter and receiving signals from the photoreceiver.

Compared with the prior art, the beneficial effects of the utility model are that: when the laser level meter using the novel sensor is placed in the forward direction, automatic leveling is realized through the two forward direction level detection assemblies; when the laser level meter is placed in a reverse direction (inverted up and down), automatic leveling is realized through the two reverse horizontal detection assemblies; the two-way leveling and the positive and negative inversion of the level meter are realized, and the function of two-way accurate level determination is realized.

Drawings

FIG. 1 is a cut-away view of a laser level;

FIG. 2 is a cut-away view of a tube level;

FIG. 3 is a sectional view of the circular level;

FIG. 4 is a schematic structural view of a level detection assembly;

FIG. 5 is a CPU in the main control circuit;

FIG. 6 is an LED indicator light in the master control circuit;

FIG. 7 is a button circuit in the master control circuit;

FIG. 8 is a remote control circuit in the master control circuit;

FIG. 9 is an angle sensor interface circuit in the master control circuit;

FIG. 10 shows a laser control circuit in the master control circuit;

FIG. 11 is a sensor signal processing circuit in the master control circuit;

FIG. 12 is a photo-emitter and photo-receiver circuit in a master control circuit; in the figure, diodes D8-9, D14-15 are light sensitive diodes, and the remaining diodes in the figure are light emitting diodes;

FIG. 13 is a schematic diagram of the base and three laser emitters of the present laser level;

description of reference numerals: 1: a first laser transmitter; 1-1: a second laser transmitter; 1-2: a third laser transmitter; 2: a base; 4: an X-axis reverse horizontal level; 4-1: a Y-axis reverse horizontal level; 5: a level (X-axis positive horizontal level); 5-1: y-axis positive horizontal level, 5-2: air bubbles.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Example 1

Referring to fig. 1 and 4, a laser level apparatus includes a base 2, two forward horizontal detection assemblies disposed on the base 2, and two reverse horizontal detection assemblies disposed on the base 2 (preferably: the forward horizontal detection assemblies and the reverse horizontal detection assemblies are disposed on the upper and lower sides of the base 2, respectively), wherein the forward and reverse horizontal detection assemblies have the same structure, and both include: the leveling instrument 5 comprises a photoelectric emitter 7 and a photosensitive receiver 8 which are symmetrically arranged right below and right above the leveling instrument 5 in parallel; a connecting line of the central points of the photoelectric emitter 7 and the photosensitive receiver 8 passes through the central point of the level 5, and the connecting line is vertically distributed with the level; when the level 5 is in a horizontal state, the light rays output by the photoelectric emitter 7 can cover the light receiving surface of the photosensitive receiver 8, and the parts covered by the light rays on the light receiving surface are distributed symmetrically; when the level 5 is tilted, the portions covered by light are not symmetrically distributed.

The light-receiving surface of the photoreceiver 8 comprises a pair of symmetrically distributed arrays of photosensitive elements (e.g. photodiodes or phototriode arrays, preferably 4 × 4 arrays of photosensitive elements).

The laser level meter also comprises a main control circuit connected with the pair of photosensitive element arrays of the photosensitive receiver 8, and the main control circuit detects the voltage output by the pair of photosensitive element arrays to judge whether the level 5 is in a horizontal state. The voltages output by the photosensitive element arrays are the same, and then the voltages are horizontal; otherwise not horizontal.

The main control circuit also outputs the detection result to a display screen or an LED indicator light of the laser level meter.

The levels 5 in the two positive level detection assemblies are arranged in the same plane or respectively on two parallel planes, and the two levels 5 are not parallel (preferably, the two levels comprise two levels which are vertically distributed with each other: an X-axis positive level 5 and a Y-axis positive level 5-1).

The levels 5 of the two reverse leveling detection assemblies are arranged in the same plane or respectively on two parallel planes, and the two levels 5 are not parallel (preferably, the two levels comprise two levels which are vertically distributed with each other: an X-axis reverse leveling level 4 and a Y-axis reverse leveling level 4-1).

The levels 5 in the forward and reverse horizontal detection assemblies are arranged in the same plane or respectively arranged on at least two parallel planes.

The base 2 is further provided with three laser emitters which are vertically distributed, namely a first laser emitter 1, a second laser emitter 1-1 and a third laser emitter 1-2, and are used for generating three laser beams or laser planes which are vertical to each other.

The level 5 is preferably a tube level, but a circular level may also be used.

When two forward horizontal detection assemblies are positioned right above two reverse horizontal detection assemblies (namely, the base 2 is arranged in a forward direction), the laser level meter automatically starts each forward horizontal detection assembly (namely, a photoelectric emitter 7 and a photosensitive receiver 8 in the forward horizontal detection assembly are started), closes each reverse horizontal detection assembly (namely, the photoelectric emitter 7 and the photosensitive receiver 8 in the reverse horizontal detection assembly are closed), in each forward horizontal detection assembly, the photoelectric emitter 7 emits light to the long level meter, the light is refracted to the photosensitive receiver 8 by utilizing the characteristic that bubbles on the long level meter can be accurately reset under the action of a gravity field, and a main control circuit connected with each photosensitive receiver 8 is used for detecting whether the two level meters 5 of the forward horizontal detection assembly are both in a horizontal state; if the laser light source is in the horizontal state, the display screen or the LED indicator light displays the result, so that an accurate horizontal reference can be provided for the level gauge, and at the moment, three laser beams or laser planes which are vertical to each other and are emitted by the three laser emitters which are vertical to each other are in the horizontal or vertical state, so that a visible construction reference is provided.

When the base 2 is turned up and down, the base 2 is placed in the opposite direction. The laser level meter automatically closes each forward horizontal detection assembly, opens each reverse horizontal detection assembly, and in each reverse horizontal detection assembly, whether two levels 5 of the forward horizontal detection assembly are both in a horizontal state is calculated through a main control circuit connected with each photosensitive receiver 8; if yes, the display screen or the LED indicating lamp displays the result, and an accurate horizontal reference can be provided for the level gauge.

As shown in fig. 5 to 12, the main control circuit includes a CPU, an LED indicator connected to the CPU, a button circuit (switches for the laser level, the forward and reverse level detection modules, the laser transmitter, etc.) connected to the CPU, a remote control circuit (switches for the laser level, the forward and reverse level detection modules, the laser transmitter, etc.) connected to the CPU, an angle sensor (for judging the forward and reverse settings of the laser level, preferably model MMA 8452) connected to the CPU, a laser control circuit (for driving the three laser transmitters to operate), a sensor signal processing circuit (for controlling the light emission of the photoelectric transmitter and receiving signals from the photosensitive receiver) connected to the CPU.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. A novel sensor, comprising a base (2), characterized in that it further comprises: two forward horizontal detection assemblies and two reverse horizontal detection assemblies arranged on the base (2); the forward and reverse horizontal detection assemblies have the same structure and comprise: the leveling instrument (5) is respectively provided with a photoelectric emitter (7) and a photosensitive receiver (8) which are symmetrically arranged right below and right above the leveling instrument (5) in parallel; when the level (5) is in a horizontal state, light rays output by the photoelectric emitter (7) can cover the light receiving surface of the photosensitive receiver (8), and the parts covered by the light rays on the light receiving surface are distributed symmetrically; when the level (5) is tilted, the light-covered portions are not symmetrically distributed.

2. The novel sensor of claim 1, wherein: the forward and reverse horizontal detection components are respectively arranged at the upper and lower sides of the base (2).

3. The novel sensor of claim 1, wherein: the levels (5) in the two positive level detection assemblies are arranged in the same plane or respectively arranged on two parallel planes, and the two levels (5) are not parallel.

4. The novel sensor of claim 1, wherein: the levels (5) of the two reverse horizontal detection assemblies are arranged in the same plane or respectively positioned on two parallel planes, and the two levels (5) are not parallel.

5. The novel sensor of any one of claims 1-4, wherein: and a connecting line of the central points of the photoelectric emitter (7) and the photosensitive receiver (8) passes through the central point of the level (5), and the connecting line is vertically distributed with the level.

6. The novel sensor of any one of claims 1-4, wherein: the light receiving surface of the light sensitive receiver (8) comprises a pair of symmetrically distributed arrays of light sensitive elements.

7. A laser level using the novel sensor of claim 6, wherein: the level gauge comprises a main control circuit connected with a pair of photosensitive element arrays of the photosensitive receiver, and the main control circuit detects the voltage output by the pair of photosensitive element arrays to judge whether the level gauge is in a horizontal state.

8. The laser level of claim 7, wherein: the base (2) is also provided with a pair of three laser emitters which are vertically distributed with each other and are used for generating three laser beams or laser planes which are vertical with each other.

9. The laser level of claim 8, wherein: the master control circuit includes:

CPU；

the LED indicator light and the display screen are connected with the CPU;

a button circuit and a remote control circuit connected with the CPU, which are used for switching on and off the forward and reverse horizontal detection components and the three laser transmitters;

the angle sensor is connected with the CPU and used for judging the forward and reverse arrangement of the laser level meter;

the laser control circuit is connected with the CPU and used for driving the three laser transmitters to work;

and a sensor signal processing circuit connected to the CPU for controlling the light emission of the photoemitter and receiving signals from the photoreceiver.