CN203250024U

CN203250024U - Handheld double laser distance measurement instrument

Info

Publication number: CN203250024U
Application number: CN 201320256959
Authority: CN
Inventors: 罗江临
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-14
Filing date: 2013-05-14
Publication date: 2013-10-23
Anticipated expiration: 2023-05-14

Abstract

The utility model discloses a handheld double laser distance measurement instrument which comprises a casing, a receiving lens group, a PCB board and a processor. The receiving lens group is fixed on the casing. A PCB board is arranged in the casing. A processor is arranged on the PCB board. Two lasers are arranged on the casing, namely an alignment laser and a measurement laser. The alignment laser and the measurement laser respectively generate different wavelengths, while the alignment laser and the measurement laser generate the same signal. The alignment laser and the measurement laser are respectively connected with the PCB board. According to the handheld double laser distance measurement instrument provided by the utility model, the alignment laser is effectively used to share most of the work of the measurements laser; the problems of shortened measurement range and reduced measurement accuracy, which are caused by long time work of the laser distance measurement instrument, are solved; and an alignment laser signal is used to calibrate a measurement laser signal, which improves the measurement accuracy.

Description

The hand-held two-colour laser distancemeter

Technical field

The utility model relates to laser surveying instrument, is specifically related to a kind of hand-held two-colour laser distancemeter.

Background technology

At present, known visible laser stadimeter is aimed at and is measured with same laser beam, owing to the temperature of semiconductor laser along with the prolongation of working time is risen, the luminous power of output descends along with the rising of temperature, simultaneous temperature rises and makes excitation wavelength generation red shift, causes easily measuring measuring shortening and measuring accuracy decline.

In surveying work, the time of often aiming at is longer than Measuring Time, particularly under distant or sunlight, usually need the more time to aim at, and Measuring Time only have several seconds zero point, aims at and measures with single laser beam, because the long-time large load operation of laser instrument, the temperature of laser instrument is risen comparatively fast, cause ranging shortening and measuring accuracy to descend, also cause shorten the serviceable life of laser instrument.

The utility model content

The problem that the utility model need solve provide a kind of effective utilization aim at laser instrument share the major part work of measuring laser instrument, solve laser range finder work long hours range shortens and measuring accuracy reduces problem, utilize the hand-held two-colour laser distancemeter of aiming at laser signal calibration measurement laser signal, improving measuring accuracy again.

To achieve these goals, the utility model designs a kind of hand-held two-colour laser distancemeter, it comprises casing, receiver lens group, pcb board, processor, the receiver lens group is fixed on the casing, be provided with pcb board at casing, pcb board is provided with processor, also is provided with two laser instruments on the described casing, produce respectively different wave length but the identical aligning laser instrument of signal and measure laser instrument, aim at laser instrument and be connected laser instrument and be connected with pcb board respectively.

Be fixed with several in the described casing and aim at the laser sampling reflecting plate.

Described pcb board is provided with receiving device.

The utility model hand-held two-colour laser distancemeter uses two laser instruments to produce respectively and aims at laser and measure laser, not only can reduce because Output optical power decline and the temperature drift that laser instrument works long hours and causes, make instrument remain enough range and due precision, utilize again the aligning laser signal that measurement laser signal is calibrated, eliminate the environmental factors such as air, air pressure to the impact of Laser Transmission, improve measuring accuracy, also avoided laser instrument because the significant variation of temperature causes shorten serviceable life.

Description of drawings:

Fig. 1 is the vertical section structural representation of the utility model hand-held two-colour laser distancemeter;

Fig. 2 is the horizontal profile structure synoptic diagram figure of the utility model hand-held two-colour laser distancemeter;

Fig. 3 is the anterior feature synoptic diagram of this utility model hand-held two-colour laser distancemeter.

Embodiment

For the ease of those skilled in the art's understanding, below in conjunction with specific embodiment and accompanying drawing structural principle of the present utility model is described in further detail.

Such as Fig. 1, Fig. 2, shown in Figure 3, a kind of hand-held two-colour laser distancemeter, it comprises casing 4, receiver lens group 1, pcb board 3, processor 5, receiver lens group 1 is fixed on the casing 4, be provided with pcb board 3 at casing 4, pcb board 3 is provided with processor 5, also is provided with two laser instruments on the described casing 4, produce respectively different wave length but the identical aligning laser instrument of signal 6 and measure laser instrument 7, aim at laser instrument 6 and be connected laser instrument 7 and be connected with pcb board 3 respectively.

As shown in Figure 1, be fixed with three in the described casing 4 and aim at laser sampling reflecting plate 8.

As shown in Figure 1, described pcb board 3 is provided with receiving device 2.The laser that receiving device 2 is aimed at laser sampling reflecting plate 8 is sampled.

The course of work of the utility model hand-held two-colour laser distancemeter is as follows: during measurement, at first opening aligning laser instrument 6 Emission Lasers aims at, measuring laser instrument 7 does not work, alignment work finishes, control is opened to close when measuring laser instrument 7 and is aimed at laser instrument 6, not not sampling by reflecting plate 8 through the aligning laser of propagation in atmosphere and measured object reflection when controlling simultaneously 2 pairs of receiving devices and closing, after measuring the reflection of laser process measured object, scioptics group 1 focuses on, filter, after receiving device 2 receives the reflected signal of measuring laser, by processor 5 sampling of the sampling of measurement laser signal and aligning laser signal is compared, calculated difference, eliminate laser in transmission path and measured object reflection process, temperature, air pressure, dust, measured objects etc. are on the impact of Laser Transmission, improve measuring accuracy, because alignment work is born by aiming at laser instrument 6, although the working time is long but emissive power is little, measure 7 of laser instruments and bear surveying work, emissive power is large and the working time is very short, the temperature of two laser instruments can not play larger variation, can both keep the working temperature consistent with environment, range and measuring accuracy that long-time continuous is measured had so both been guaranteed, utilize again and aim at laser signal calibration measurement laser signal, eliminate the impact of measuring laser environment in transmission course, improve measuring accuracy, also avoided with single laser instrument because the significant variation of temperature causes shorten serviceable life.

The principle of work of the utility model hand-held two-colour laser distancemeter is as follows: use two laser instruments at laser range finder, produce respectively the aligning laser of different wave length and measure laser, the laser of aiming at the laser instrument emission uses same signal source with measurement laser, be modulated into same signal, the emissive power of aiming at laser instrument is less than the emissive power of measuring laser instrument, and spot is than measuring laser large (being convenient to visual at a distance).Punctual only the unlatching aimed at laser instrument, emission and the laser of measuring laser same signal source, because the wavelength of two laser beam employings is different, the single-pass optical filter (film) of receiver lens group stops the reflected light scioptics of aiming at laser, thereby the reflector laser that the control scioptics receive only has measurement laser; After aligning is finished, in the time of the control survey Laser emission, close the aligning laser instrument, synchro control receiver spare is sampled to the aligning laser signal that does not pass through external transmission, reflect through testee when measuring laser, the scioptics group filters, focus on, after the receiving device sampling, processor is not with measurement laser signal and comparing through the laser signal of aiming at of propagation in atmosphere and testee reflection before, calculated difference, eliminate laser in transmission path, temperature, air pressure, dust, measured objects etc. are on the impact of Laser Transmission, such two laser instrument alternations and rest, the temperature of laser instrument does not have larger variation, it is long but emissive power is little to aim at the laser works time, and it is large and the working time is very short to measure the laser instrument emissive power, can both keep the working temperature consistent with environment, range and precision had both been guaranteed, utilize again the aligning laser signal to come the calibration measurement laser signal, eliminated measurement environment to the impact of Laser Transmission, improved measuring accuracy.

Above-mentioned embodiment is preferred embodiment of the present utility model; can not limit with the utility model; other any change that does not deviate from the technical solution of the utility model and make or other equivalent substitute modes all are included within the protection domain of the present utility model.

Claims

1. hand-held two-colour laser distancemeter, comprise casing (4), receiver lens group (1), pcb board (3), processor (5), receiver lens group (1) is fixed on the casing (4), be provided with pcb board (3) at casing (4), pcb board (3) is provided with processor (5), it is characterized in that: described casing (4) is provided with two laser instruments, produce respectively different wave length but the identical aligning laser instrument (6) of signal and measure laser instrument (7), aim at laser instrument (6) and be connected laser instrument (7) and be connected with pcb board (3) respectively.

2. hand-held two-colour laser distancemeter according to claim 1 is characterized in that: be fixed with several in the described casing (4) and aim at laser sampling reflecting plate (8).

3. hand-held two-colour laser distancemeter according to claim 2, it is characterized in that: described pcb board is provided with receiving device.