CN111457894A

CN111457894A - Be applied to open-air measuring cold survey formula high accuracy total powerstation

Info

Publication number: CN111457894A
Application number: CN202010240531.3A
Authority: CN
Inventors: 苏嵩; 孙跃
Original assignee: Xuzhou Divo Communication Engineering Co ltd
Current assignee: Xuzhou Divo Communication Engineering Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-07-28

Abstract

The invention discloses a cold measurement type high-precision total station applied to field measurement, which belongs to the technical field of mapping, can maintain the calibration temperature of an electronic level bubble by adopting a semiconductor refrigeration mode in the existing double-shaft automatic compensation module, can ignore the compensation influence of high-temperature environment on the electronic level bubble, utilizes the refrigeration to the standard temperature during the calibration before the measurement, stores the cold energy of the electronic level bubble in a heat insulation mode after the calibration of near zero error is realized, isolates the interference of external high-temperature heat invasion on the electronic level bubble, controls the temperature of the electronic level bubble in real time by temperature monitoring, responds to the real-time measurement inclination error while uniformly refrigerating, makes compensation correction, improves the measurement precision, greatly reduces the influence of the external high-temperature environment on the automatic compensation in the test process, the cold measurement independent of the external environment is realized.

Description

Be applied to open-air measuring cold survey formula high accuracy total powerstation

Technical Field

The invention relates to the technical field of surveying and mapping, in particular to a cold measurement type high-precision total station applied to field measurement.

Background

The total station, i.e. the total station type electronic distance measuring instrument, is a high-tech measuring instrument integrating light, machine and electricity into one body, and is a surveying and mapping instrument system integrating horizontal angle, vertical angle, distance (slant distance and flat distance) and height difference measuring functions into one body. Compared with the optical theodolite, the electronic theodolite changes the optical scale into the photoelectric scanning scale, and replaces manual optical micrometer reading with automatic recording and displaying reading, so that the angle measurement operation is simplified, and the generation of reading errors can be avoided. The total station is called because the instrument can be arranged once to complete all measurement work on the station. The method is widely applied to the field of precision engineering measurement or deformation monitoring of overground large-scale buildings, underground tunnel construction and the like.

At present, a double-shaft automatic compensation system is introduced into the total station, when the longitudinal axis of the total station is inclined during operation, an angle observation error is caused, and the left and right observed values of a disc cannot be offset by centering. The system for automatic compensation of the tilt of the total station, which is unique to the total station, can monitor the tilt of the longitudinal axis and automatically correct the angle measurement error caused by the tilt of the longitudinal axis in the scale reading (some total stations may have a maximum tilt of ± 6'). The angle error caused by the vertical axis inclination can also be automatically calculated by the microprocessor according to the vertical axis inclination correction calculation formula and added into the scale reading for correction, so that the scale display reading is correct, namely the vertical axis inclination is automatically compensated.

The adopted configuration of the two-axis automatic compensation (state of the art, including Topcon, Trimble): the absolute level is calibrated using an electronic bubble (which is not visible from the outside, and not a bubble as described in the calibration of the test), which is a middle fill liquid and gas at both ends. A light emitting diode is disposed on each of both sides of the upper portion of the bubble, and a photo-electric tube is disposed on each of both sides of the lower portion of the bubble for receiving light emitted from the light emitting diode through the bubble. Then, the intensities of the lights obtained by the two diodes are compared by an arithmetic circuit. When in the initial position, i.e. absolute level, the operand is set to zero. When the total station instrument is inclined in operation, the operation circuit calculates the difference value of the light intensity in real time, so that the difference value is converted into the displacement of the inclination, and the information is transmitted to the control system to determine the value of automatic compensation. In addition to the automatic compensation method, which is a method of correcting the output after calculation by a microprocessor, there is another method of correcting the offset in the axial direction by driving a micro lead screw by a stepping motor, so that the axis is always kept at an absolute level.

However, as is known, the total station has a high requirement on temperature during high-precision measurement, because the basic element of the electronic bubble is liquid, and has an expansion and contraction effect, all calibrations related to automatic compensation must be performed under a specific temperature condition, but during measurement operation, the temperature change often causes uneven expansion and contraction of the liquid, so that when the electronic bubble is compensated, an error caused by the temperature is corrected as a tilt error of the total station, the electronic bubble is offset from the center by a certain number of grids, which causes an overrun of a measurement error, especially when measured in a field environment with various environments, the temperature has a more severe influence on the electronic bubble, and because real-time calibration is impossible during measurement operation, the measurement data overrun retest is often caused, time and energy are wasted, and the measurement efficiency is severely delayed, the measurement accuracy required for the measurement cannot even be achieved.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a cold measurement type high-precision total station applied to field measurement, which can maintain the calibration temperature of an electronic level bubble by adopting a semiconductor refrigeration mode in the existing double-shaft automatic compensation module, so that the compensation influence of a high-temperature environment on the electronic level bubble can be ignored, the refrigeration is carried out to a standard temperature during the calibration before measurement, after the calibration of near zero error is realized, the cold quantity of the electronic level bubble is stored in a heat insulation mode on the one hand, the interference of external high-temperature heat invasion on the electronic level bubble is isolated on the other hand, the temperature of the electronic level bubble is controlled in real time by temperature monitoring, the compensation correction is carried out by responding to the real-time measured inclination error while the refrigeration is uniform, the measurement precision is improved, and the influence of the external high-temperature environment on the automatic compensation in the test process is greatly reduced, the cold measurement independent of the external environment is realized.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A cold measurement type high-precision total station applied to field measurement comprises a total station body, wherein the total station body comprises a CPU control module, a measurement module, a liquid crystal display module, a keyboard input module, a power supply module and an automatic compensation module, the measurement module, the liquid crystal display module, the keyboard input module, the power supply module and the automatic compensation module are all connected with the CPU control module, the CPU control module is connected with a data processing module, a memory is installed in the total station body and connected with the CPU control module, the automatic compensation module comprises a cassette, an installation cavity is formed in the cassette, an electronic level bubble is installed in the installation cavity, a cold storage cladding layer wraps the outer end of the electronic level bubble, semiconductor refrigeration sheets are installed at the upper end and the lower end of the cold storage cladding layer, and a heat conduction sheet is installed at one end, far away from the cold storage cladding layer, of the semiconductor refrigeration sheets, semiconductor refrigeration piece left and right sides all is equipped with the light casing, and the light casing installs on storing up cold covering, is located a pair of upside install emitting diode on the internal roof of light casing, is located a pair of the downside install the photoelectric tube on the internal diapire of light casing, it has a pair of light trap all to cut up at both ends about the cold covering to store up, place assorted cold block in the light trap, electronic level one end fixedly connected with magnet guide block is kept away from to cold block, install the electro-magnet on the internal lateral wall of light casing, fixedly connected with connecting rod on the magnet guide block lateral wall, still install the elasticity pivot on the internal lateral wall of light casing, and rotate between elasticity pivot and the connecting rod and be connected, emitting diode, electro-magnet and photoelectric tube all are connected with CPU control module.

Furthermore, a heat insulating material is filled between the cold storage covering layer and the heat conducting fins, the heat insulating material is made of any one of phenolic foam plastics, aerogel felts or vacuum heat insulating plates, on one hand, the heat insulating material can prevent cold quantity interaction between the refrigerating end and the heating end of the semiconductor refrigerating fin, the best refrigerating effect of the refrigerating end on the cold storage covering layer is improved, and on the other hand, cold storage of the cold storage covering layer and heat insulation of the external environment can be achieved.

Furthermore, the vertical cross-sectional shapes of the light hole and the cold guide block are trapezoidal, the diameters of the vertical cross-sectional shapes are 2-5mm, on one hand, the cold guide effect is improved by increasing the contact area with the side wall of the light hole, on the other hand, a certain reset deviation is allowed between the cold guide block and the light hole, and the lamination can be kept all the time.

Furthermore, the cold storage covering layer and one end, close to the electronic level bubble, of the cold guide block are coated with a heat conduction silica gel layer, the thickness of the heat conduction silica gel layer is 1-2mm, on one hand, the heat conduction silica gel layer can improve the cold guide effect, and on the other hand, the heat conduction silica gel layer can play a role in buffering and protecting the electronic level bubble.

Further, both ends all cut the bar louvre that has a plurality of evenly distributed about the magazine, radiator fan is all installed at both ends about the magazine, and radiator fan's the mouth of blowing just to the bar louvre, keeps the difference in temperature through the heating end rapid heat dissipation to the semiconductor refrigeration piece, can improve the refrigeration effect of refrigeration end indirectly, prolongs the life of semiconductor refrigeration piece.

Furthermore, the CPU control module is connected with a data transmission module, the data transmission module is connected with a cloud server, the data transmission module adopts a 128-bit AES symmetric key algorithm for encryption transmission, on one hand, measurement data can be encrypted and sent to the cloud server in real time, backup and sharing of the data can be achieved, loss and occupation of a local space of a memory are prevented, cloud computing can be performed in real time to meet business requirements, on the other hand, information such as coordinate information and notifications of known points and the like can be downloaded and obtained from the cloud server in real time, errors of manual input of the coordinate information are avoided, and meanwhile notifications of the cloud server including weather notifications or task notifications and the like can be obtained in time.

Furthermore, the CPU control module is connected with a Bluetooth module, the Bluetooth module is connected with user mobile equipment, the user mobile equipment is connected with the cloud server, a user can be connected with the total station body through the Bluetooth module to realize bidirectional information transmission, and the user can also be connected with the cloud server through 3g, 4g or WiFi to provide convenience for user measurement.

Furthermore, install the thermocouple in the installation cavity, and the temperature measurement end of thermocouple contacts with the cold storage envelope layer, the thermocouple is connected with CPU control module, can real-time detection cold storage envelope layer's temperature and send to user's mobile device, realizes accurate temperature control by user's mobile device control a pair of semiconductor refrigeration piece.

Furthermore, an input pulse level conversion circuit, an amplifying circuit and a filter circuit are sequentially connected between the photoelectric tube and the CPU control module, so that conversion, amplification and filtration from optical signals to electric signals can be realized, the accuracy in compensation calculation is improved, the optimal inclination correction value is obtained, and the accuracy of measurement data is improved.

Further, the sensor module is installed to total powerstation body outer end, and the sensor module is connected with CPU control module, the sensor module includes temperature and humidity sensor and atmospheric pressure sensor, and the sensor module can be when total powerstation body start automatic acquisition environment value, including humiture and atmospheric pressure to automatic leading-in is corrected, need not user's manual measurement and input, improves measurement of efficiency.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can realize through in current biax automatic compensation module, adopt the refrigerated mode of semiconductor to maintain the calibration temperature of electronic level bubble, thereby can ignore the compensation influence of high temperature environment to the electronic level bubble, refrigeration to standard temperature when utilizing the calibration before the measurement, realize being close to the calibration back of zero error, through thermal-insulated mode, on the one hand carry out cold storage to the cold volume of electronic level bubble, on the other hand isolated external high temperature's heat invasion disturbs the electronic level bubble, simultaneously through the temperature of temperature monitoring real time control electronic level bubble, respond real-time measurement's slope error and make the compensation and correct in even refrigerated while, improve measurement accuracy, reduce external high temperature environment's influence to automatic compensation in the testing process by a wide margin, realize being independent of cold testing under the external environment.

(2) The heat insulation material is filled between the cold storage covering layer and the heat conducting fins and can be any one of phenolic foam plastics, aerogel felts or vacuum heat insulation plates, on one hand, the heat insulation material can prevent cold quantity interaction between the refrigerating end and the heating end of the semiconductor refrigerating fin, the optimal refrigerating effect of the refrigerating end on the cold storage covering layer is improved, and on the other hand, cold storage on the cold storage covering layer and heat insulation of the external environment can be realized.

(3) The vertical cross-sectional shapes of the light hole and the cold guide block are trapezoidal, the diameters of the light hole and the cold guide block are 2-5mm, on one hand, the cold guide effect is improved by increasing the contact area with the side wall of the light hole, on the other hand, a certain reset deviation is allowed between the cold guide block and the light hole, and the cold guide block and the light hole can be always attached.

(4) And the cold storage covering layer and one end of the cold guide block, which is close to the electronic level bubble, are coated with a heat-conducting silica gel layer, the thickness of the heat-conducting silica gel layer is 1-2mm, and the heat-conducting silica gel layer can improve the cold guide effect on one hand and play a role in buffering and protecting the electronic level bubble on the other hand.

(5) All dig the bar louvre that has a plurality of evenly distributed at both ends about the magazine, radiator fan is all installed at both ends about the magazine, and radiator fan's the mouth of blowing just to the bar louvre, keeps the difference in temperature through dispelling the heat rapidly to the end of heating of semiconductor refrigeration piece, can improve the refrigeration effect of refrigeration end indirectly, prolongs the life of semiconductor refrigeration piece.

(6) The CPU control module is connected with a data transmission module, the data transmission module is connected with a cloud server, the data transmission module adopts a 128-bit AES symmetric key algorithm for encryption transmission, on one hand, measurement data can be encrypted and sent to the cloud server in real time, backup and sharing of the data can be achieved, loss and occupation of local space of a memory are prevented, cloud computing can be conducted in real time to meet business requirements, on the other hand, information such as coordinate information and notifications of known points and the like can be downloaded and obtained from the cloud server in real time, errors of manual input of the coordinate information are avoided, and meanwhile notifications of the cloud server can be obtained in time and comprise weather notifications or task notifications and the like.

(7) The CPU control module is connected with a Bluetooth module, the Bluetooth module is connected with user mobile equipment, the user mobile equipment is connected with the cloud server, a user can be connected with the total station body through the Bluetooth module to achieve bidirectional information transmission, and the cloud server can also be connected through 3g, 4g or WiFi to provide convenience for user measurement.

(8) The thermocouple is installed in the installation cavity, the temperature measuring end of the thermocouple is in contact with the cold storage cladding layer, the thermocouple is connected with the CPU control module, the temperature of the cold storage cladding layer can be detected in real time and sent to the user mobile equipment, and the user mobile equipment controls the pair of semiconductor refrigeration pieces to achieve accurate temperature control.

(9) An input pulse level conversion circuit, an amplifying circuit and a filter circuit are sequentially connected between the photoelectric tube and the CPU control module, so that conversion, amplification and filtration from optical signals to electric signals can be realized, the accuracy in compensation calculation is improved, the optimal inclination correction value is obtained, and the precision of measured data is improved.

(10) The sensor module is installed to total powerstation body outer end, and the sensor module is connected with CPU control module, and the sensor module includes temperature and humidity sensor and atmospheric pressure sensor, and the sensor module can be when total powerstation body start automatic acquisition environmental value, including humiture and atmospheric pressure to automatic leading-in is corrected, need not user's manual measurement and input, improves measurement of efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of an automatic compensator according to the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic structural diagram of the automatic compensator according to the present invention in a partially operating state;

FIG. 5 is a schematic diagram of the main modules of the present invention.

The reference numbers in the figures illustrate:

the total station comprises a total station body 1, a 101 CPU control module, a 102 measurement module, a 103 liquid crystal display module, a 104 keyboard input module, a 105 power supply module, a 106 automatic compensation module, a 107 data processing module, a 108 memory, a 2 cloud server, 3 user mobile equipment, a 4 cassette, a 5 electronic level bubble, a 6 cold storage cladding, a 7 semiconductor refrigeration sheet, a 8 heat conducting sheet, a 9 light shell, a 10 light emitting diode, 11 strip-shaped heat dissipation holes, 12 light transmission holes, 13 cold conducting blocks, 14 heat conducting silica gel layers, 15 magnet guide blocks, 16 electromagnets, 17 connecting rods, 18 photoelectric tubes, 19 heat insulating materials, 20 thermocouples, 21 data transmission modules, 22 Bluetooth modules and 23 sensor modules.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.

Example 1:

referring to fig. 1 and 5, a cold measurement type high-precision total station applied to field measurement includes a total station body 1, the total station body 1 includes a CPU control module 101, a measurement module 102, a liquid crystal display module 103, a keyboard input module 104, a power supply module 105 and an automatic compensation module 106, the measurement module 102, the liquid crystal display module 103, the keyboard input module 104, the power supply module 105 and the automatic compensation module 106 are all connected with the CPU control module 101, the CPU control module 101 is connected with a data processing module 107 for processing data of the measurement module 102, a memory 108 is installed in the total station body 1, the memory 108 is connected with the CPU control module 101, the memory 108 is a local storage space of the total station body 1 and is used for temporarily storing partial data, the CPU control module 101 is connected with a data transmission module 21, the data transmission module 21 is connected with a cloud server 2, the data transmission module 21 adopts a 128-bit AES symmetric key algorithm for encryption transmission, on one hand, measurement data can be encrypted and transmitted to the cloud server 2 in real time, backup and sharing of the data can be realized, the local space of the memory 108 is prevented from being lost and occupied, cloud computing can be performed in real time to meet business requirements, on the other hand, information such as coordinate information and notification of a known point and the like can be downloaded and obtained from the cloud server 2 in real time, errors of manual coordinate information input are avoided, meanwhile, the notification of the cloud server 2 can be obtained in time, the notification comprises weather notification or task notification and the like, the CPU control module 101 is connected with a Bluetooth module 22, the Bluetooth module 22 is connected with the user mobile device 3, the user mobile device 3 is connected with the cloud server 2, a user can be connected with the total station body 1 through the Bluetooth module 22 to realize bidirectional, the cloud server 2 can also be connected through 3g, 4g or WiFi, convenience is provided for user measurement, the sensor module 23 is installed at the outer end of the total station body 1, the sensor module 23 is connected with the CPU control module 101, the sensor module 23 comprises a temperature and humidity sensor and an atmospheric pressure sensor, the sensor module 23 can automatically acquire environmental values including temperature and humidity and atmospheric pressure when the total station body 1 is started, automatic introduction is conducted for correction, manual measurement and input of a user are not needed, and the measurement efficiency is improved.

Referring to fig. 2-3, the automatic compensation module 106 includes a cassette 4, a mounting cavity is chiseled in the cassette 4, an electronic level bubble 5 is mounted in the mounting cavity, the specific structure and principle are not described herein, the outer end of the electronic level bubble 5 is wrapped with a cold storage cladding 6, which has the effects of cold storage and cold conduction, the composite graphite material is used, which is prepared by absorbing paraffin in expanded graphite with a porous structure, belongs to an organic composite phase change heat storage material, which has excellent cold storage and cold conduction performance, the upper and lower ends of the cold storage cladding 6 are both provided with semiconductor sheets 7, the space requirement is low, no refrigerant is needed, the continuous operation can be performed, no pollution source has rotating component, no rotation effect can be generated, no sliding component is a solid sheet, no vibration and noise are generated during the operation, the service life is long, the mounting is easy, the semiconductor refrigerating sheet 7 has two functions, can refrigerate and heat, the semiconductor refrigerating sheet 7 is a current transduction type sheet, through the control of input current, can realize the temperature control of high accuracy, the thermal inertia of the semiconductor refrigerating sheet 7 is very small, the refrigerating and heating time is fast, under the condition that the heat radiating of the hot end is good and the cold end is unloaded, the electrifying is not for one minute, the refrigerating sheet can reach the maximum temperature difference, one end of the semiconductor refrigerating sheet 7 far away from the cold storage cladding 6 is provided with a heat conducting sheet 8, the insulating ceramic material is adopted, the left side and the right side of the semiconductor refrigerating sheet 7 are both provided with a light shell 9, the light shell 9 is arranged on the cold storage cladding 6, the inner top wall of a pair of light shells 9 at the upper side is provided with a light emitting diode 10, the inner bottom wall of a pair of light shells 9 at the lower side is provided with a photoelectric tube 18, the upper end and the lower end of the cold storage cladding 6 are respectively provided with a pair of light holes 12 for communicating a light path, matched cold conducting blocks 13 are placed in the light holes 12 to play a role of conducting cold to the positions of the light holes 12 so as to avoid the temperature difference between the cold conducting blocks and the surrounding positions caused by the lack of cold conducting at the positions, the liquid in the electronic level bubble 5 is heated and expanded at the positions to cause the attenuation and enlargement of optical signals when passing through, so that calculation errors are caused, the cold conducting blocks 13 are consistent with the cold storage cladding 6 in material, so that the whole cold conducting function of the electronic level bubble 5 can be realized, the vertical cross sections of the light holes 12 and the cold conducting blocks 13 are trapezoidal, the diameter of the light holes 12 and the cold conducting blocks 13 is 2-5mm, on one hand, the cold conducting effect is improved by increasing the contact area with the side walls of the light holes 12, on the other hand, a certain reset deviation is allowed between the cold conducting blocks 13 and the light, install electro-magnet 16 on the light casing 9 inside wall, can adsorb magnet guide block 15 and then realize the transfer of leading cold block 13 after electro-magnet 16 circular telegram is magnetized, fixedly connected with connecting rod 17 on the 15 lateral walls of magnet guide block, still install the elasticity pivot on the light casing 9 inside wall, and rotate between elasticity pivot and the connecting rod 17 and be connected, the elasticity pivot provides the direction of leading cold block 13 on the one hand and shifts, on the other hand can provide elasticity and order about leading cold block 13 and reset, emitting diode 10, electro-magnet 16 and photoelectric tube 18 all are connected with CPU control module 101.

The heat insulation material 19 is filled between the cold storage covering layer 6 and the heat conduction sheet 8, the heat insulation material 19 is made of any one of phenolic foam plastics, aerogel felts or vacuum heat insulation plates, on one hand, the heat insulation material 19 can prevent cold quantity interaction between the refrigerating end and the heating end of the semiconductor refrigerating sheet 7, the best refrigerating effect of the refrigerating end on the cold storage covering layer 6 is improved, and on the other hand, cold storage of the cold storage covering layer 6 and heat insulation of the external environment can be achieved.

One ends of the cold storage cladding layer 6 and the cold guide block 13, which are close to the electronic level bubble 5, are coated with heat conduction silica gel layers 14, the thickness of each heat conduction silica gel layer 14 is 1-2mm, and the heat conduction silica gel layers 14 can improve the cold guide effect on one hand and play a role in buffering and protecting the electronic level bubble 5 on the other hand.

All dig the bar louvre 11 that has a plurality of evenly distributed in both ends about magazine 4, radiator fan is all installed at both ends about magazine 4, and radiator fan's the mouth of blowing just to bar louvre 11, keeps the difference in temperature through dispelling the heat rapidly to the end of heating of semiconductor refrigeration piece 7, can improve the refrigeration effect of refrigeration end indirectly, prolongs the life of semiconductor refrigeration piece 7.

The thermocouple 20 is installed in the installation cavity, the temperature measuring end of the thermocouple 20 is in contact with the cold storage cladding 6, the thermocouple 20 is connected with the CPU control module 101, the temperature of the cold storage cladding 6 can be detected in real time and sent to the user mobile device 3, and the user mobile device 3 controls the pair of semiconductor refrigerating pieces 7 to achieve accurate temperature control.

When the total station is used, a user starts up the total station body 1 after erecting the total station body at a measuring place, the CPU control module 101 controls the pair of semiconductor chilling plates 7 to begin chilling, the calibration temperature when the total station body 1 is inspected is taken as the standard temperature, the chilling is stopped when the thermocouple 20 detects that the cold storage cladding 6 reaches the standard temperature, the user performs leveling, calibration and other operations according to the prior art and specifications, the measuring precision of the calibrated total station body 1 is not affected by the external high-temperature environment to the maximum extent, in the subsequent measuring operation, the total station body 1 inevitably inclines to some extent due to external factors such as foot treading, vehicle passing and the like, in the measuring process, when the semiconductor chilling plates 7 are in a non-working state in a cold storage time period, the CPU control module 101 controls the electromagnet 16 to be electrified and magnetized all the time, and under the magnetic attraction effect of the electromagnet 16, please refer to figure 4, the magnet guide block 15 drives the cold guide block 13 to synchronously rotate to be attached to the electromagnet 16, the cold guide block 13 is in a smooth mode, an optical signal emitted by the light emitting diode 10 can be smoothly received by the photoelectric tube 18 on the lower side of the cold guide block, the CPU control module 101 processes the signal based on the automatic compensation principle and calculates an inclination correction value, and the inclination correction value is integrated into a finally obtained measurement value, and it is worth noting that when the thermocouple 20 detects that the cold storage cladding 6 is higher than the standard temperature, the pair of semiconductor refrigerating fins 7 is restarted to start refrigeration, at the moment, the electromagnet 16 is powered off and demagnetized, the cold guide block 13 and the magnet guide block 15 are reset under the action of the elastic rotating shaft, the attachment and connection of the cold guide block 13 are realized, the cold quantity can be continuously and uniformly conducted on the cold storage cladding 6, the integral uniform cooling of the electronic level bubble 5 to the standard temperature is met, the local temperature difference is not easy to appear, and the accurate compensation of the total station body 1, the interference error of the external environment to the electronic level 5 is reduced to the maximum extent, the cold measurement effect is achieved, and the problem that the measured data error exceeds the limit due to compensation errors caused by temperature and even the accuracy is insufficient is avoided.

Example 2:

based on the refrigeration principle of the semiconductor refrigeration sheet 7, the exchange of the refrigeration end and the heating end of the semiconductor refrigeration sheet 7 can be realized by changing the current polarity, namely, one end of the semiconductor refrigeration sheet 7 close to the cold storage cladding 6 is changed into the heating end, the cold storage cladding 6 is heated, so that the standard temperature is still kept, the semiconductor refrigeration sheet is suitable for low-temperature weather, and the rest parts are kept consistent with those in the embodiment 1.

The invention can maintain the calibration temperature of the electronic level bubble in the conventional double-shaft automatic compensation module 106 in a semiconductor refrigeration mode, thereby neglecting the compensation influence of a high-temperature environment on the electronic level bubble, utilizing the refrigeration to the standard temperature during the calibration before measurement, realizing the calibration of near zero error, storing the cold energy of the electronic level bubble in a heat insulation mode on the one hand, isolating the interference of the heat invasion of external high temperature on the electronic level bubble on the other hand, simultaneously controlling the temperature of the electronic level bubble in real time through temperature monitoring, responding to the real-time measured inclination error to carry out compensation correction while carrying out uniform refrigeration, improving the measurement precision, greatly reducing the influence of the external high-temperature environment on the automatic compensation in the test process, and realizing the cold measurement independent of the external environment.

Claims

1. The utility model provides a be applied to open-air measuring cold survey formula high accuracy total powerstation, includes total powerstation body (1), its characterized in that: the total station body (1) comprises a CPU control module (101), a measuring module (102), a liquid crystal display module (103), a keyboard input module (104), a power supply module (105) and an automatic compensation module (106), the measuring module (102), the liquid crystal display module (103), the keyboard input module (104), the power supply module (105) and the automatic compensation module (106) are all connected with the CPU control module (101), the CPU control module (101) is connected with a data processing module (107), a memory (108) is installed in the total station body (1), the memory (108) is connected with the CPU control module (101), the automatic compensation module (106) comprises a cassette (4), an installation cavity is formed in the cassette (4) in a chiseled mode, an electronic level bubble (5) is installed in the installation cavity, and a cold storage cladding (6) wraps the outer end of the electronic level bubble (5), semiconductor refrigeration piece (7) are all installed at both ends about cold storage covering (6), semiconductor refrigeration piece (7) are kept away from cold storage covering (6) one end and are installed conducting strip (8), semiconductor refrigeration piece (7) left and right sides all is equipped with light casing (9), and light casing (9) are installed on cold storage covering (6), and it is a pair of to be located the upside install emitting diode (10) on the roof in light casing (9), and it is a pair of to be located the downside install photoelectric tube (18) in light casing (9), a pair of light trap (12) have all been dug at both ends about cold storage covering (6), place assorted cold block (13) in light trap (12), cold block (13) are kept away from electron bubble (5) one end fixedly connected with level magnet guide block (15), install electro-magnet (16) on light casing (9) inside wall, the LED light source is characterized in that a connecting rod (17) is fixedly connected to the side wall of the magnet guide block (15), an elastic rotating shaft is further mounted on the inner side wall of the light shell (9), the elastic rotating shaft is rotatably connected with the connecting rod (17), and the LED (10), the electromagnet (16) and the photoelectric tube (18) are all connected with a CPU control module (101).

2. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: and a heat insulation material (19) is filled between the cold storage cladding (6) and the heat conducting fins (8), and the heat insulation material (19) adopts any one of phenolic foam plastics, aerogel felts or vacuum heat insulation plates.

3. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: the vertical cross sections of the light holes (12) and the cold guide blocks (13) are trapezoidal, and the diameters of the light holes and the cold guide blocks are 2-5 mm.

4. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: and one ends of the cold storage cladding (6) and the cold guide blocks (13) close to the electronic level bubble (5) are coated with heat conduction silica gel layers (14), and the thickness of each heat conduction silica gel layer (14) is 1-2 mm.

5. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: a plurality of uniformly distributed strip-shaped heat dissipation holes (11) are drilled at the upper end and the lower end of the hidden box (4), the heat dissipation fan is installed at the upper end and the lower end of the hidden box (4), and the air blowing port of the heat dissipation fan is opposite to the strip-shaped heat dissipation holes (11).

6. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: the CPU control module (101) is connected with a data transmission module (21), the data transmission module (21) is connected with a cloud server (2), and the data transmission module (21) adopts a 128-bit AES symmetric key algorithm for encryption transmission.

7. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: the CPU control module (101) is connected with a Bluetooth module (22), the Bluetooth module (22) is connected with a user mobile device (3), and the user mobile device (3) is connected with the cloud server (2).

8. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: and a thermocouple (20) is arranged in the mounting cavity, the temperature measuring end of the thermocouple (20) is in contact with the cold storage cladding (6), and the thermocouple (20) is connected with the CPU control module (101).

9. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: an input pulse level conversion circuit, an amplifying circuit and a filter circuit are sequentially connected between the photoelectric tube (18) and the CPU control module (101).

10. The cold measurement type high-precision total station applied to field measurement in claim 1, wherein: sensor module (23) are installed to total powerstation body (1) outer end, and sensor module (23) are connected with CPU control module (101), sensor module (23) include temperature and humidity sensor and atmospheric pressure sensor.