Optical range finder for scanning spherical space

Abstract

The utility model discloses an optical range finder for scanning a spherical space, which comprises a base, a main circuit board arranged in the base, a fixed support arranged on the base, supports arranged on two sides of the fixed support and connected with the top end of the base, and a first motor arranged on the fixed support and rotating horizontally. The first motor is provided with a first motor driving wire connected with the main circuit board, the top end of a rotating shaft of the first motor extends to the outside of the fixing support and is sleeved with a hollow stator part of a conductive slip ring, a conductive slip ring rotor part is arranged above the conductive slip ring stator part, and a laser range finder is arranged above the conductive slip ring rotor part. And the laser range finder is driven by a second motor which rotates vertically. Measurement results of the laser range finder are transmitted to the main circuit board in a wired or wireless mode and then are transmitted to the outside through the main circuit board. The utility model has the advantages of simple structure, lower cost, continuous power supply and long-time work, and can carry out laser scanning and distance measurement on a three-dimensional spherical space.

Description

Technical Field

[0001] The utility model relates to the technical field of optical rangefinders, in particular to an optical rangefinder for scanning a spherical space. Background Art

[0002] Since 1970, laser rangefinders have been emitting a beam of laser to the object being measured and receiving the laser reflected back from the object. The distance between the laser transmitter and the object is measured based on the reflected laser, which has become a mature and widely used ranging technology. Because the laser spot can be regarded as a point, laser ranging is a one-dimensional point measurement technology, and the measurement range is recorded as R. Install the laser rangefinder on a rotating platform, and let the platform rotate while the laser rangefinder continuously measures the distance. The one-dimensional ranging can be expanded to the ranging within a two-dimensional circular plane with a radius of R. The measurement result is the rotation angle α and the object distance r (r≤R), recorded as (α, r). Similarly, if the rotating platform is installed on a second rotating mechanism, so that the measuring circular plane rotates half a circle around a certain diameter, the two-dimensional circular plane ranging can be expanded to the ranging within a three-dimensional spherical space with a radius of R. The measurement result is the first rotation angle α, the second rotation angle β and the object distance r (r≤R), recorded as (α, β, r), such as Figure 5 As shown (O is the intersection of two orthogonal rotation axes, i.e., the measurement origin). If α and β are allowed to rotate continuously in a circle, the laser rangefinder can repeatedly measure the dynamic changes in the spherical space.

[0003] While the principle of distance measurement in three-dimensional spherical space is simple, maintaining continuous power supply and data collection for a rotating laser rangefinder for extended periods presents practical technical challenges. Because external power sources like electrical outlets are often stationary, after a few rotations of the laser rangefinder, its power cord becomes tangled like a twisted doughnut, making further rotation impossible. Reciprocating scanning within a single rotation, as proposed in CN201710259157, can avoid excessive wire tangling, but the mechanical motion device requires frequent starts, stops, and reverse motion, resulting in low scanning speeds and limited practical applications. Using a conductive slip ring for power supply, as proposed in CN205210753U, can avoid the wire tangling problem, but slip rings have speed limits, typically allowing only less than ten rotations per second—a speed too low for dynamic monitoring. Furthermore, the conductive contacts are subject to mechanical wear, and high speeds are inversely proportional to their service life (the slip rings must be scrapped and replaced after completing a predetermined number of rotations). Battery-powered solutions, such as CN204292064U, can avoid wire entanglement and slip ring life issues, but their continuous operating time is limited. Another solution uses multiple laser beams arranged vertically to scan a vertically expanded fan-shaped area, and then rotates the fan-shaped area in a horizontal circular motion, such as CN202121274310. This type of solution is often used in vehicle-mounted lidar because it allows high rotational speeds and is conducive to dynamic monitoring. However, the emission and reception of multiple laser beams are expensive, optical alignment is difficult, and the fan-shaped scanning area only occupies a fraction of the sphere, leaving most of the space within the sphere as a detection blind spot. Due to these various problems and difficulties, there is currently no optical rangefinder solution that can continuously and rapidly scan a three-dimensional spherical space for a long time. Utility Model Content

[0004] The purpose of the utility model is to provide an optical rangefinder for scanning a spherical space, so as to solve the problems in the above background technology that the overall structure of the optical rangefinder is relatively complex, the scanning space is limited, and it is difficult to continuously power it for a long time.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an optical rangefinder for scanning a spherical space, comprising a base, a main circuit board being installed in the base, a fixed bracket being provided above the main circuit board, outer walls on both sides of the fixed bracket being connected to the base through brackets, a first horizontally rotating motor being installed on the fixed bracket, the first motor being provided with a first motor drive line, the bottom end of the first motor drive line being connected to the main circuit board, a first motor shaft being installed at the top end of the first motor, the top end of the first motor shaft extending to the outside of the fixed bracket and being sleeved with a conductive slip ring stator portion, the conductive slip ring stator portion being mechanically connected to the fixed bracket, and the conductive slip ring stator portion being electrically connected to the main circuit board, and the conductive slip ring stator portion being above the conductive slip ring stator portion. A conductive slip ring rotor portion is provided, which is mechanically connected to the first motor shaft. A laser rangefinder is suspended above the conductive slip ring rotor portion, and the laser rangefinder is equipped with a laser receiving mirror and a laser emitting assembly. The laser rangefinder is provided with a photoelectric sensor. A conductive first cantilever bracket and a second cantilever bracket are provided on both sides of the conductive slip ring rotor portion, respectively. The conductive slip ring rotor portion is electrically connected to the first cantilever bracket and the second cantilever bracket respectively. A second motor that rotates vertically is installed on the top of the first cantilever bracket, and a second motor drive line of the second motor is electrically connected to the conductive slip ring rotor portion. A second motor shaft is installed at one end of the second motor, and an end of the second motor shaft away from the second motor is connected to the outer wall of the laser rangefinder.

[0006] Preferably, a first photoelectric code reader is installed on one side of the top of the fixing bracket, and the first photoelectric code reader reads a horizontal photoelectric code ring sleeved on the first motor shaft and rotating together, and the first photoelectric code reader is electrically connected to the main circuit board.

[0007] Preferably, a metal bearing is provided at the top end of the second cantilever bracket through the bracket, and the metal bearing is connected to a passive rotating shaft, and the end of the passive rotating shaft away from the metal bearing is connected to the outer wall of the laser rangefinder, and the passive rotating shaft is coaxially arranged with the second motor rotating shaft, and the line connecting the two rotating shafts passes through the rotation center of mass of the laser rangefinder.

[0008] Preferably, a laser ranging circuit board is attached to the wall of the laser rangefinder, and the laser ranging circuit board is electrically connected to the laser emitting component and the photoelectric sensor. The laser ranging circuit board is electrically connected to the conductive first cantilever bracket and the second cantilever bracket, and can obtain electricity and / or transmit data.

[0009] Preferably, the laser ranging circuit board is electrically connected to a second photoelectric code reader, and the second photoelectric code reader reads a vertical photoelectric code ring provided at one end of the second motor facing the laser ranging circuit board.

[0010] Preferably, a wireless data transceiver / receiver is provided on the laser ranging circuit board, and works in pair with the wireless data transceiver / receiver provided on the main circuit board to send and / or receive data to each other.

[0011] Preferably, a wired data transceiver is provided on the laser ranging circuit board, which pairs with the wired data transceiver provided on the main circuit board through an electrical transmission link composed of a conductive first cantilever bracket and a second cantilever bracket, a conductive slip ring rotor part, and a conductive slip ring stator part to send and / or receive data to each other.

[0012] Preferably, the main circuit board receives external power supply and / or work instructions, and sends measurement data to the outside world in a wired and / or wireless manner.

[0013] The optical rangefinder for scanning spherical space is installed on a two-dimensional orthogonal rotating turntable through a laser rangefinder to measure the distance from the laser rangefinder to the object. The two rotating motors of the two-dimensional turntable are controlled by the main circuit board and rotate at a preset speed respectively. A conductive slip ring is provided at the junction of the horizontal rotating body and the vertical rotating body to provide uninterrupted cross-border transmission of power. The first and second cantilever brackets supporting the laser rangefinder on the horizontal turntable not only provide mechanical support but also provide two-way conductive functions, which simplifies the power transmission design and makes the solution more feasible. Two rotary encoders are provided respectively The laser rangefinder is provided with a laser ranging circuit board to obtain the horizontal first rotation angle and the vertical second rotation angle. During the vertical rotation process, the laser ranging is continuously performed according to the self-measured second rotation angle and the preset angle step. The ranging circuit board is provided with a wireless or wired data transceiver to send the current second rotation angle and ranging value to the main circuit board. The main circuit board is provided with a wireless or wired data transceiver to receive the second rotation angle and ranging value, and after adding the self-measured first rotation angle, the complete three-dimensional polar coordinate data of the object including (first rotation angle, second rotation angle, ranging value) or other converted coordinate system data is sent to the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0016] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0017] Figure 4 This is a schematic diagram of the top view of the laser receiving mirror of the utility model;

[0018] Figure 5Schematic diagram of the principle of expanding one-dimensional ranging R to three-dimensional spherical space ranging (α, β, R) using two-dimensional rotation (α, β).

[0019] In the figure: 1. base; 11. main circuit board; 12. first motor drive line; 13. fixed bracket; 14. first motor; 15. first motor shaft; 16. conductive slip ring stator; 17. conductive slip ring rotor; 18. first photoelectric code reader; 19. horizontal photoelectric code ring; 20. first cantilever bracket; 21. second cantilever bracket; 22. second motor; 23. second motor drive line; 24. metal bearing; 25. passive shaft; 26. vertical photoelectric code ring; 27. laser ranging circuit board; 28. second photoelectric code reader; 29. second motor shaft; 31. laser rangefinder; 32. laser receiving mirror; 33. laser emitting assembly; 34. photoelectric sensor. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-5 The present invention provides an embodiment of an optical rangefinder for scanning a spherical space, comprising a base 1, wherein a main circuit board 11 is mounted in the base 1, and the main circuit board 11 receives external power supply and / or working instructions, and sends measurement data to the outside world in a wired and / or wireless manner;

[0022] The base 1 is provided with a fixed bracket 13. The outer walls of the fixed bracket 13 are connected to the base 1 via brackets. A first photoelectric code reader 18 is mounted on one side of the top of the fixed bracket 13. The first photoelectric code reader 18 reads a horizontal photoelectric code ring 19 mounted on the first motor shaft 15 and rotates together. The first photoelectric code reader 18 is electrically connected to the main circuit board 11.

[0023] A first motor 14 that rotates horizontally is mounted on the fixed bracket 13. The first motor 14 is provided with a first motor drive line 12. The bottom end of the first motor drive line 12 is connected to the main circuit board 11. A first motor shaft 15 is mounted on the top of the first motor 14. The top end of the first motor shaft 15 extends to the outside of the fixed bracket 13 and is sleeved with a conductive slip ring stator portion 16. The conductive slip ring stator portion 16 is mechanically connected to the fixed bracket 13 and electrically connected to the main circuit board 11. A conductive slip ring rotor portion 17 is provided above the conductive slip ring stator portion 16. The conductive slip ring rotor portion 17 is mechanically connected to the first motor shaft 15. A laser rangefinder 31 is suspended above the conductive slip ring rotor portion 17. The laser rangefinder 31 is provided with a laser rangefinder circuit board 27. The laser rangefinder circuit board 27 is electrically connected to a laser emitting assembly 33 and a photoelectric sensor 34. The laser rangefinder circuit board 27 is electrically connected to the conductive first cantilever bracket 20 and the second cantilever bracket 21, and can obtain power and / or transmit data.

[0024] The laser ranging circuit board 27 is electrically connected to the second photoelectric code reader 28 , and the second photoelectric code reader 28 reads a vertical photoelectric code ring 26 provided at one end of the second motor 22 facing the laser ranging circuit board 27 ;

[0025] The laser ranging circuit board 27 is provided with a wireless data transceiver / transmitter, which works in pair with the wireless data transceiver / transmitter provided on the main circuit board 11 to send and / or receive data to each other;

[0026] The laser ranging circuit board 27 is provided with a wired data transceiver, which works in pairs with the wired data transceiver provided on the main circuit board 11 through an electrical transmission link composed of the conductive first cantilever support 20 and the second cantilever support 21, the conductive slip ring rotor part 17, and the conductive slip ring stator part 16 to send and / or receive data to each other;

[0027] The laser rangefinder 31 is equipped with a laser receiving mirror 32 and a laser emitting assembly 33. The laser rangefinder 31 is provided with a photoelectric sensor 34. A conductive first cantilever bracket 20 and a second cantilever bracket 21 are provided on both sides of the conductive slip ring rotor portion 17. A metal bearing 24 is provided at the top end of the second cantilever bracket 21 through a bracket. The metal bearing 24 is connected to a passive rotating shaft 25. The end of the passive rotating shaft 25 away from the metal bearing 24 is connected to the outer wall of the laser rangefinder 31. The passive rotating shaft 25 is coaxially arranged with the second motor rotating shaft 29. The line connecting the two rotating shafts passes through the rotation center of mass of the laser rangefinder 31.

[0028] A second motor 22 that rotates vertically is installed at the top of the first cantilever bracket 20. The second motor drive line 23 of the second motor 22 is electrically connected to the conductive slip ring rotor part 17. A second motor shaft 29 is installed at one end of the second motor 22. The end of the second motor shaft 29 away from the second motor 22 is connected to the outer wall of the laser rangefinder 31.

[0029] When the present embodiment is in use, first, a first motor 14 and a conductive slip ring stator portion 16 are fixed to the fixed bracket 13 of the first horizontal rotating portion, the conductive slip ring rotor portion 17 supports the second vertical rotating portion and the third laser ranging portion above, and the conductive slip ring rotor portion 17 can be driven by the first motor shaft 15 to rotate horizontally, a first cantilever bracket 20 and a second cantilever bracket 21 are fixed to the conductive slip ring rotor portion 17, and a second motor 22 and a metal bearing 24 with a common rotation axis are respectively provided at the ends of the first cantilever bracket 20 and the second cantilever bracket 21, the second motor 22 and the metal bearing 24 are respectively suspended with a laser rangefinder 31 through a coaxially arranged second motor shaft 29 and a passive shaft 25, and the second motor 22 can be driven by a second motor shaft 29 and a passive shaft 25. The motor shaft 29 drives the laser rangefinder 31 to rotate within a vertical plane. The passive shaft 25 and metal bearing 24 on the other side of the laser rangefinder 31 provide a force-balancing fulcrum and drive the laser rangefinder 31 to rotate. During operation, this optical rangefinder, which performs laser scanning and distance measurement in a three-dimensional spherical space, is first supplied with positive and negative power by an external power source. The main circuit board 11 converts the external positive and negative power into its own internal operating voltages (+ and -, if necessary). This voltage is then transmitted via two wires to two electrodes on the stator portion 16 of the conductive slip ring. The voltage is then conducted through the internal structure of the conductive slip ring to the two positive and negative electrodes on the rotor portion 17 of the conductive slip ring. The positive and negative electrodes on the rotor portion are respectively electrically connected to the first and second cantilever supports 20 and 21, which are fixed to the rotor portion 17 of the conductive slip ring. The first cantilever support 20 is electrically connected to the housing of the second motor 22 and conducts electricity naturally to the second motor shaft 29 through its metal components. Alternatively, a conductor can be used to directly connect the first cantilever support 20 and the second motor shaft 29. The second cantilever bracket 21 is connected to the metal bearing 24, and the electricity from the second cantilever bracket 21 is naturally conducted to the passive shaft 25 through the metal parts of the metal bearing 24. Alternatively, a conductor can be used to directly connect the second cantilever bracket 21 and the passive shaft 25. The laser ranging circuit board 27 is electrically connected to the second motor shaft 29 and the passive shaft 25, respectively, to obtain positive and negative power supplies, which are then converted into its own internal operating voltage (if necessary). Because the laser ranging circuit board 27, the second motor shaft 29, and the passive shaft 25 rotate synchronously and do not experience relative displacement, their electrical connection is stable and unaffected by rotation. This completes the stable power supply from the main circuit board 11 to the laser ranging circuit board 27 across two rotational levels, allowing the laser ranging circuit board 27 to operate electrically while rotating. The first rotation angle α is read by a rotary encoder. In one embodiment, a horizontal photoelectric code ring 19 is sleeved on the first motor shaft 15 and rotates therewith. The horizontal photoelectric code ring 19 is provided with equidistantly distributed light and dark stripes. A first photoelectric code reader 18 fixed to the fixed bracket 13 and electrically connected to the main circuit board 11 can determine the first rotation angle α by reading and counting the number of light and dark stripes passing in front of the observation hole.In another embodiment, the first motor 14 has a built-in angle encoder that can output angle information, and the rotation angle α is output to the main circuit board 11 through the first motor drive line 12. Both embodiments are existing mature technologies and are only briefly described here without further details. Similarly, the second rotation angle β can be obtained by the second photoelectric code reader 28 or the second motor 22 and output to the laser ranging circuit board 27. The laser ranging circuit board 27 is attached to the laser ranging device 31. The laser ranging device 31 has a laser emitting assembly 33, which includes a laser and an emitting lens. It is electrically connected to the laser ranging circuit board 27 and emits a beam of pulsed laser light under the control of the laser ranging circuit board 27. When the laser light encounters the object to be measured, a portion of the reflected laser light is received by the laser receiving mirror 32 and converged onto the photoelectric sensor 34, which can cause the photoelectric sensor 34 to generate an electrical pulse signal, which is transmitted to the laser ranging circuit board 27 via an electrical connection. The laser ranging circuit board 27 analyzes and compares the laser emission pulse signal and the photoelectric sensor 34 received pulse signal to determine the distance r of the object to be measured. One-dimensional laser ranging is a mature technology and is only briefly described here. Each time the second rotation angle β of the laser rangefinder 31 rotates through a preset angle step, the laser rangefinder circuit board 27 performs laser ranging and obtains a distance r. A wireless data transceiver is provided on the laser rangefinder circuit board 27 to transmit the current β, r information, and a paired wireless data transceiver is provided on the main circuit board 11 to receive the β, r information. Short-range wireless communication is a mature technology and will only be briefly described here. In another embodiment, the β, r information can also be transmitted by wire. The laser rangefinder circuit board 27 encodes β, r into AC information and superimposes it on the DC power transmitted by the passive shaft 25 or the second motor shaft 29. The DC power is then transmitted back to the main circuit board 11 via the DC power transmission path. The main circuit board 11 is equipped with an AC / DC separation circuit to filter out the AC information and decode it to obtain the β, r information. The main circuit board 11 combines β, r with the first rotation angle α read by the first photoelectric code reader 18 to form a complete three-dimensional polar coordinate system (α, β, r). The main circuit board 11 can also convert the β, r information into other coordinate systems, such as Cartesian coordinates, and output it to an external controller or computer via wired or wireless means. Since the rotation of the first motor 14 is restricted by the conductive slip ring rotor portion 17 and cannot reach a high speed, the rotation of the second motor 22 is less restricted and can reach a high speed. Therefore, the second motor 22 drives the laser rangefinder 31 to rotate at high speed in the vertical plane, and the laser rangefinder 31 performs laser ranging once every preset angular step. The first motor 14 rotates at a low speed. For example, each time the laser rangefinder 31 completes one vertical rotation, it rotates one horizontal step. This can make the speed of the first motor 14 only one-nth of that of the second motor 22 (n is the number of steps in one horizontal rotation). This can extend the service life of the conductive slip ring rotor portion 17 by n times. Therefore, the high speed of the second motor 22 and the low speed of the first motor 14 are the preferred solution.The optical rangefinder can also be equipped with an external spherical protective cover that is transparent to the laser to isolate it from the adverse effects of the surrounding environment. It can scan and measure a three-dimensional spherical space with a radius of R around it. Since the base of the optical rangefinder blocks the transmission of the laser, a conical measurement blind spot is formed in the scanned sphere. However, the base is often fixed on a mounting part provided by the user, and the user generally does not pay attention to the mounting part. Therefore, reasonably setting the position and angle of the mounting part can minimize the overlap between the measurement blind spot and the user's area of interest.

Claims

1. An optical rangefinder for scanning a spherical space, characterized in that: The invention comprises a base (1), wherein a main circuit board (11) is installed in the base (1), a fixed bracket (13) is provided in the base (1), the outer walls of both sides of the fixed bracket (13) are connected to the base (1), a first motor (14) for horizontal rotation is installed on the fixed bracket (13), a first motor drive line (12) is provided on the first motor (14), the first motor drive line (12) is connected to the main circuit board (11), a first motor shaft (15) is installed at the top end of the first motor (14), the top end of the first motor shaft (15) extends to the outside of the fixed bracket (13) and is sleeved with a conductive slip ring stator part (16), the conductive slip ring stator part (16) is mechanically connected to the fixed bracket (13), and the conductive slip ring stator part (16) is electrically connected to the main circuit board (11), a conductive slip ring rotor part (17) is provided above the conductive slip ring stator part (16), and the conductive slip ring rotor part (17) is provided. 7) is mechanically connected to the first motor shaft (15) below, a laser rangefinder (31) is suspended above the conductive slip ring rotor part (17), the laser rangefinder (31) is equipped with a laser receiving mirror (32) and a laser emitting assembly (33), the laser rangefinder (31) is provided with a photoelectric sensor (34), the laser rangefinder (31) is provided with a laser rangefinder circuit board (27), the conductive slip ring rotor part (17) is electrically and mechanically connected to the conductive first cantilever bracket (20) and the second cantilever bracket (21) provided on both sides thereof, the top end of the first cantilever bracket (20) is equipped with a second motor (22) that rotates vertically, the second motor drive line (23) on the second motor (22) is electrically connected to the conductive slip ring rotor part (17), one end of the second motor (22) is equipped with a second motor shaft (29), and one end of the second motor shaft (29) is mechanically connected to the laser rangefinder (31).

2. The optical rangefinder for scanning a spherical space according to claim 1, characterized in that: A metal bearing (24) is provided at the top end of the second cantilever bracket (21), and the metal bearing (24) is connected to a passive rotating shaft (25). An end of the passive rotating shaft (25) away from the metal bearing (24) is connected to the outer wall of the laser rangefinder (31), and the passive rotating shaft (25) and the second motor rotating shaft (29) are coaxially arranged, and a line connecting the two rotating shafts passes through the rotation center of mass of the laser rangefinder (31).

3. The optical rangefinder for scanning a spherical space according to claim 1, characterized in that: The laser rangefinder (31) is provided with a laser rangefinder circuit board (27), which is electrically connected to the laser emitting assembly (33) and the photoelectric sensor (34). The laser rangefinder circuit board (27) is electrically connected to the conductive first cantilever bracket (20) and the second cantilever bracket (21), and can obtain power and / or transmit data.

4. The optical rangefinder for scanning a spherical space according to claim 1, characterized in that: A first photoelectric code reader (18) is installed on one side of the top of the fixing bracket (13). The first photoelectric code reader (18) reads a horizontal photoelectric code ring (19) sleeved on the first motor shaft (15) and rotating together. The first photoelectric code reader (18) is electrically connected to the main circuit board (11).

5. The optical rangefinder for scanning a spherical space according to claim 3, characterized in that: The laser distance measuring circuit board (27) is electrically connected to a second photoelectric code reader (28), and the second photoelectric code reader (28) reads a vertical photoelectric code ring (26) provided at one end of the second motor (22) facing the laser distance measuring circuit board (27).

6. The optical rangefinder for scanning a spherical space according to claim 3, characterized in that: The laser distance measuring circuit board (27) is provided with a wireless data transceiver / transmitter, which works in pair with the wireless data transceiver / transmitter provided on the main circuit board (11) to send and / or receive data to each other.

7. The optical rangefinder for scanning a spherical space according to claim 3, characterized in that: The laser ranging circuit board (27) is provided with a wired data transceiver / receiver, which works in pair with the wired data transceiver / receiver provided on the main circuit board (11) through an electrical transmission link composed of a conductive first cantilever bracket (20), a second cantilever bracket (21), a conductive slip ring rotor part (17), and a conductive slip ring stator part (16), so as to send and / or receive data to each other.

8. The optical rangefinder for scanning a spherical space according to claim 1, characterized in that: The main circuit board (11) receives power supply and / or work instructions from the outside, and sends measurement data to the outside in a wired and / or wireless manner.

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