Reversible laser range finderTechnical field
The present invention relates to a kind of laser range finder, espespecially a kind of laser range finder carrying out bidirectional ranging.
Background technology
Standing crop surveys the distance (distance such as between indoor two relative metopes or the distance of floor to ceiling) between two distant determinands, mostly be use tape measure or tape measure, because tape measure and tape measure need respectively against the end to be measured (or tested surface) of two determinands, and tape measure and tape measure have material to stretch or the problem of measuring error, another when ceiling excessive height, namely tape measure and tape measure cannot upwards extend this ceiling of contact smoothly, therefore the distance between existing use tape measure or tape measuring two determinand has curtailment, use inconvenience or the excessive problem of error.
And during the distance using laser range finder to measure between two determinands, mainly this laser range finder is resisted against a wherein end to be measured (as floor), this laser range finder is to another end to be measured (as ceiling) Emission Lasers and receives the laser that this end to be measured (ceiling) reflects, the traveling time being emitted to reception of laser is poor as calculated, can calculate the distance between two ends to be measured.But, existing laser range finder must make its laser produced vertical with end to be measured (or tested surface), easily produces error in measurement, in addition, laser range finder could must be measured the distance with another end to be measured against a wherein end to be measured during use, use and still have inconvenience.
Summary of the invention
As described in front take off, could must measure against wherein one end when existing laser range finder uses and distance between the other end, use and still have inconvenience, therefore fundamental purpose of the present invention is providing a reversible laser range finder, mainly on laser range finder, be provided with multiple laser module, with respectively towards opposite end transmitting/receiving laser, need can not calculate distance against a wherein end to be measured, solve the awkward problem of existing laser range finder.
The technical way taked for reaching aforementioned object makes aforementioned reversible laser range finder include:
One body;
One control module, it is located in body;
Dual-laser module, it is divided into the two ends of body, and each laser module includes a Laser emission end and a laser pick-off end, and these laser modules are electrically connected with control module respectively;
One display module, it is located on body, and this display module is electrically connected with control module;
One key-press module, it is located on body, and this key-press module includes most button, and each button is electrically connected with control module;
With this, two laser modules receive the laser of two ends to be measured reflections towards two opposite exterior lateral sides Emission Lasers of body respectively, this control module calculates traveling time difference or the wavelength phase difference of the laser of two laser modules respectively, to calculate two laser modules and two end distances to be measured respectively, and obtain total distance of two end reality to be measured.
The reversible laser range finder utilizing aforementioned components to form, by arranging two laser modules on the body of reversible laser range finder, two laser modules receive the laser of each end to be measured reflection towards two opposite exterior lateral sides Emission Lasers of body respectively, this control module calculates traveling time difference or the wavelength phase difference of the laser of two laser modules respectively, to calculate two laser modules and two end distances to be measured respectively, add the length of body, total distance of two end reality to be measured can be obtained, do not need just can calculate distance as existing laser range finder need be resisted against end to be measured in time using, solve the awkward problem of existing laser range finder.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of a preferred embodiment of the present invention.
Fig. 2 is the use schematic diagram of a preferred embodiment of the present invention.
Fig. 3 is the stereographic map of the front end of a preferred embodiment of the present invention.
Fig. 4 is the stereographic map of the rear end of a preferred embodiment of the present invention.
Drawing reference numeral
10 body 20 control modules
30 first laser module 31 first Laser emission ends
32 first laser pick-off end 40 second laser modules
41 second Laser emission end 42 second laser pick-off ends
50 display module 60 key-press modules
61 power buttons 62 measure button
63 measuring unit's selection key 70 power modules
Embodiment
About a preferred embodiment of the present invention, refer to shown in Fig. 1, reversible laser range finder of the present invention is provided with a control module 20 in a body 10, one first laser module 30, one second laser module 40, one display module 50, one key-press module 60 and a power module 70, please refer to shown in Fig. 3 and Fig. 4, this body 10 is the microscler box bodys in hollow, the both ends of the surface of its length direction are arranged with aforementioned first laser module 30 and this second laser module 40, this body 10 is provided with this display module 50 and this key-press module 60 in wherein one end (top) of its short transverse, the relative another end (bottom) of body 10 in top is provided with this power module 70 (not shown) again, this control module 20 makes circuit board-like and is located in body 10.
This first laser module 30 includes one first Laser emission end 31 and one first laser pick-off end 32, and the first Laser emission end 31 and the first laser pick-off end 32 of this first laser module 30 are electrically connected with control module 20 respectively.This second laser module 40 includes one second Laser emission end 41 and one second laser pick-off end 42, and the second Laser emission end 41 and the second laser pick-off end 42 of this second laser module 40 are electrically connected with control module 20 respectively.
As shown in Figure 3 and Figure 4, in this preferred embodiment, this first laser module 30 is provided at one end (front end) of the length direction of body 10, this second laser module 40 is provided at the another end (rear end) of the length direction of body 10, with respectively towards the two ends transmitting/receiving laser that body 10 is relative, the optical axis difference 180 degree of two laser, because the structure of two laser modules and operation technique are known technology, seldom repeats at this.Separately, in this preferred embodiment, two described laser modules have a Laser emission end and a laser pick-off end respectively, only, Laser emission end and the laser pick-off end of two laser modules can integrate separately, and do not need to be provided separately, and the present invention is not limited at this.
This display module 50 is electrically connected with control module 20, and with indivedual distances of the signal and display measurement that accept control module 20, total distance or set-up function, in this preferred embodiment, this display module 50 is a liquid crystal display (LCD).
This key-press module 60 includes most button, and each button is electrically connected with control module 20 respectively.In this preferred embodiment, these buttons include a power button 61 (POWER or ON/OFF), and measure button 62 and measuring unit's selection key 63 (as measuring unit is set to meter or foot).
This power module 70 is electrically connected with control module 20, and this power module 70 is to provide the electric power needed for each module, and in this preferred embodiment, this power module 70 is a direct supply (as batteries).
This control module 20 includes a microcontroller (not shown), a storage element (not shown), the driving circuit (not shown) of a display module 50 and a Power Management Unit (not shown), because the structure of these elements of control module 20 and operation technique are known technology, seldom repeat at this.
When user's wish measures the distance of two ends to be measured, start power supply by the power button 61 of key-press module 60, then user is by the two ends of the length direction of body 10, namely the first laser module 30 and the second laser module 40 are respectively towards end to be measured, press again and measure button 62 with the traveling time difference or the wavelength phase difference that make control module 20 calculate the laser of the first laser module 30 and the second laser module 40 respectively, to calculate the distance between the first laser module 30 two ends to be measured relative to the second laser module 40 respectively, add the length of body 10, total distance of two end reality to be measured can be obtained, and the unit of the distance of display is changed by measuring unit's selection key 63, such as be scaled foot by meter.
This control module 20 another also can calculate separately traveling time difference or the wavelength phase difference of the laser of the first laser module 30 or the second laser module 40, to calculate the distance between the first laser module 30 or the second laser module 40 end relatively to be measured respectively, add the length of body 10, total distance of the reality of relatively single end to be measured can be obtained.
Refer to shown in Fig. 2, for the measurement schematic diagram of reversible laser range finder of the present invention, as shown in the figure, the length of this body is L2, this first laser module 30 is L1 to the distance of a wherein end to be measured (as metope), this second laser module 40 is L3 to the distance of another end to be measured (as another metope), this control module 20 makes the first laser module 30 and the second laser module 40 respectively to sending laser outward, and receive the laser of reflection respectively, calculate traveling time difference or the wavelength phase difference of the first laser module 30 and the second laser module 40 more respectively, with the distance L2 of difference computer body 10 to two end to be measured, L3, add the length L1 of body 10, directly can obtain the total distance L between two ends to be measured, i.e. L=L1+L2+L3, do not need just can calculate distance as existing laser range finder need be resisted against end to be measured in time using, solve the awkward problem of existing laser range finder.