CN202304819U

CN202304819U - Levelling instrument displayed by light-emitting diodes

Info

Publication number: CN202304819U
Application number: CN2011203654362U
Authority: CN
Inventors: 张海艇
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-27
Filing date: 2011-09-27
Publication date: 2012-07-04
Anticipated expiration: 2021-09-27

Abstract

A levelling instrument displayed by light-emitting diodes is composed of a levelling instrument body and a display circuit. Hydrargyrum is filled in a lower cavity of a base of the levelling instrument body, and a left electrode, a right electrode and a common electrode are further placed on the base of the levelling instrument body. When the levelling instrument body is horizontal, the left electrode and the right electrode are not contacted with the hydrargyrum, two not-gates output low level to enable the two light-emitting diodes to be lighted simultaneously; when the levelling instrument body is high at the left and low at the right, the left electrode is not contacted with the hydrargyrum, the red light-emitting diode keeps lighting, the right electrode is contacted with the hydrargyrum, and the right electrode is enabled to be communicated with the common electrode through the hydrargyrum, so that electric potential of an input end of the not-gates connected to the right electrode is pulled to the low level to output high level, and the green light-emitting diode is extinguished. In the same way, when the levelling instrument body is high at the right and low at the left, the green light-emitting diode is lighted, and the red light-emitting diode is extinguished, so that users only need observe states of the two light-emitting diodes to know whether the levelling instrument body is horizontal or not.

Description

A kind of surveyor's staff of diode displaying

Affiliated technical field

The utility model relates to a kind of surveyor's staff, relates to a kind of surveyor's staff of diode displaying specifically.

Background technology

At present known common surveyor's staff all is with the bubble eye-level, though difficult it is simple in structure, observes intuitively inadequately, and eye-level needs certain experience simultaneously, differentiates high that in that place sometimes and locates to hang down and let the people obscure easily.

Summary of the invention

The purpose of the utility model provides a kind of surveyor's staff of diode displaying, as long as the state of two light emitting diodes has promptly been known that place's height about observation, for the utility model that achieves the above object is that the technical scheme that its technical matters of solution is adopted is: a kind of surveyor's staff of diode displaying is by a surveyor's staff body; A display circuit is formed, and described surveyor's staff body is by a loam cake, and a base constitutes; Two ends respectively have a hole about described loam cake, i.e. left hole, a right hole; Said left hole is used to place red light emitting diodes, and right hole is used to place green LED, and said base intracavity is divided into two parts up and down; Promptly form a upper impression, a lower impressions, said upper impression is used to place display circuit; Irritating in the said lower impressions has certain mercury, and mercury accounts for the half the of lower impressions volume, also has three electrodes in the said lower impressions; I.e. left electrode, a right electrode, a public electrode; One end of described left and right sides electrode leaves mercury one segment distance when the surveyor's staff body is in level; Promptly electrode does not contact mercury when level, and the other end of described left and right sides electrode passes interlayer and stretches in the base upper impression and be connected with the input end of two not gates, and a middle part and an end that described public electrode is placed in the surveyor's staff body stretch in the mercury; The other end passes interlayer and stretches in the base upper impression and be connected with ground wire, and said surveyor's staff body material is an insulator.

Contain two not gates in the described display circuit, a red light emitting diodes, a green LED; Two pull-up resistors, two current-limiting resistances are connected to a pull-up resistor between the input end of a said not gate and the power supply; Simultaneously with the surveyor's staff body in left electrode be connected, when left electrode did not contact mercury, the not gate input end was high level; When left electrode contacted mercury, the not gate input end was pulled to low level, is connected to a red light emitting diodes and a current-limiting resistance between said this non-gate output terminal and the power supply; The output low level red light emitting diodes is lighted when input end is high level, and output high level red light emitting diodes extinguishes when input end is low level, is connected to another pull-up resistor between the input end of described another not gate and the power supply; Simultaneously with the surveyor's staff body in right electrode be connected; When right electrode did not contact mercury, this not gate input end was high level, when right electrode contacts mercury; This not gate input end is pulled to low level; Be connected to a green LED and another current-limiting resistance between said this non-gate output terminal and the power supply, the output low level green LED is lighted when input end is high level, and output high level green LED extinguishes when input end is low level.

The principle of work of the utility model is; When surveyor's staff body level, about two electrodes do not contact mercury, two not gate output low level red light emitting diodes and green LED are lighted simultaneously; When the high right side, a surveyor's staff body left side was low, left electrode not contact with water pale rose colour look light emitting diode kept lighting, and right electrode contact mercury makes right electrode through mercury and public electrode connection; Promptly connect with ground wire, thereby also make the current potential of the input end that is connected on the not gate on the right electrode be pulled to low level and make it to export high level, green LED extinguishes; In like manner; When the right high left side of surveyor's staff body was low, green LED was lighted, and red light emitting diodes extinguishes.

The utility model has the advantages that observation intuitively is easy to differentiate the horizontality of testee; Be that red light emitting diodes and green LED are in horizontality when lighting simultaneously; Red light emitting diodes bright green light emitting diode is in the high right low state in a left side when going out; The red light emitting diodes green LED that goes out is in the low right high state in a left side when bright

Description of drawings

Accompanying drawing is the fundamental diagram of the utility model

Embodiment

To specifically narrate the specific embodiments of the utility model with reference to accompanying drawing: a kind of surveyor's staff of diode displaying is made up of 1, one display circuit of a surveyor's staff body 2, and surveyor's staff body 1 is by a loam cake 5; A base 10 constitutes, and loam cake about 5 two ends respectively have a hole, i.e. a left hole 4; A right hole 8, left hole 4 is used to place red light emitting diodes 18, and right hole is used to place green LED 19; Base 10 inner chambers are divided into two parts up and down, promptly form 6, one lower impressions 7 of a upper impression; Upper impression 6 is used to place display circuit 2, and irritating in the lower impressions 7 has mercury 12, and mercury 12 accounts for the half the of lower impressions 7 volumes; 7 also are placed with three electrodes in the lower impressions, i.e. 9, one right electrodes 13 of a left electrode; A public electrode 11, an end of left electrode 9, right electrode 13 leaves mercury 12 1 segment distances when surveyor's staff body 1 is in level, and promptly electrode does not contact mercury when level; The other end of left side electrode 9, right electrode 13 passes the upper impression input end connection interior and Sheffer stroke gate 20, not gate 21 respectively that interlayer stretches into base 10; A middle part and an end that described public electrode 11 is placed in surveyor's staff body 1 stretch in the mercury 12, and the other end passes interlayer and stretches in the upper impression 6 of base 10 and with ground wire and be connected, and the material of surveyor's staff body 1 is an insulator.

2 contain 18, one green LEDs 19 of 20,21, one red light emitting diodes of two not gates in the display circuit; 14,16, two current-limiting

resistances

15,17 of two pull-up resistors are connected to a pull-up resistor 14 between the input end of not gate 20 and the power supply 3; Be connected with surveyor's staff body 1 interior left electrode 9 simultaneously, when left electrode 9 did not contact mercury 12, not gate 20 input ends were high level; When left electrode 9 contacted mercurys 12, not gate 20 input ends were pulled to low level, are connected to a red light emitting diodes 18 and a current-limiting resistance 15 between the output terminal of not gate 20 and the power supply 3; Output low level red light emitting diodes 18 is lighted when input end is high level, and output high level red light emitting diodes 18 extinguishes when input end is low level, is connected to another pull-up resistor 16 between the input end of not gate 21 and the power supply 3; Be connected with surveyor's staff body 1 interior right electrode 13 simultaneously; When right electrode 13 did not contact mercury 12, not gate 21 input ends were high level, when right electrode 13 contacts mercurys 12; Not gate 21 input ends are low level; Be connected to a green LED 19 and another current-limiting resistance 17 between the output terminal of not gate 21 and the power supply 3, output low level green LED 19 is lighted when input end is high level, and output high level green LED 19 extinguishes when input end is low level.

Claims

1. the surveyor's staff of a diode displaying is by a surveyor's staff body (1); A display circuit (2) is formed, and it is characterized in that: base (10) inner chamber is divided into two parts up and down, promptly forms a upper impression (6); A lower impressions (7); Upper impression (6) is used to place display circuit (2), and irritating in the lower impressions (7) has mercury (12), and mercury (12) accounts for the half the of lower impressions (7) volume.

2. the surveyor's staff of diode displaying according to claim 1; It is characterized in that: (7) also are placed with three electrodes in the lower impressions; An i.e. left electrode (9); A right electrode (13), a public electrode (11), an end of left electrode (9), right electrode (13) leaves mercury (12) one segment distances at surveyor's staff body (1) when being in level; Promptly electrode does not contact mercury when level; The other end of a left side electrode (9), right electrode (13) pass interlayer stretch in the upper impression of base (10) and respectively the input end of Sheffer stroke gate (20), not gate (21) connect, a middle part and an end that described public electrode (11) is placed in surveyor's staff body (1) stretch in the mercury (12), the other end passes interlayer and stretches in the upper impression (6) of base (10) and with ground wire and be connected.