Sensor for automatic gates or barriers and method for sensor configuration and arrangement with such a sensor

Abstract

The invention relates to a sensor (30) for use with an automatic door, an automatic gate, or an automatic barrier (20), wherein the sensor (30) comprises an evaluation unit (66), an output connection (68), and a detection unit (64), wherein the detection unit (64) provides a detection field (32) and detects objects in a monitoring zone (34) of the detection field (32), wherein the detection unit (64) determines the position of objects detected in a monitoring zone (34) of the detection field (32), wherein the position relates to a detection coordinate system with a detection z-axis; the evaluation unit (66) maps the position relative to the origin of a detection coordinate system; the evaluation unit (66) can output a specific signal depending on the position of the object;the sensor (30) comprises configuration means (62) via which a configuration signal for configuring the relationship between position and specific output signal can be set; wherein the configuration means (62) provide a first configuration signal for carrying out a mapping step in which the detection unit (64) maps the position of objects in the monitoring zone (34) in the detection coordinate system as a reference map. The invention is characterized in that the configuration means (62) provide a second configuration signal so that the evaluation unit (66) generates an environmental coordinate system, wherein the environmental coordinate system comprises at least one environmental x-axis and one environmental y-axis, wherein the evaluation unit (64) determines the reference position (50) within the monitoring zone (34);the evaluation unit (64) defines the ambient x-axis as the connecting line between the reference position (50) and the origin of the detection coordinate system; the ambient y-axis is determined as perpendicular to the x-axis and the z-axis of the detection coordinate system; wherein, furthermore, at least one monitoring field (36, 38) is defined in the ambient coordinate system, in which the specific output signals are assigned to a detection event within the at least one monitoring field (36, 38); after the definition of the evaluation coordinate system, the reference map is transferred, in particular transformed, from the detection coordinate system to the ambient coordinate system;

Description

[0001] The invention relates to a sensor for an automatic door or barrier according to the preamble of claim 1, a configuration method for such a sensor according to claim 11, and an arrangement with a gate or barrier according to claim 16.

[0002] It is known that induction loops are embedded in roadways to control automatic barriers or similar devices. The induction loops are installed relative to a controlled barrier and are oriented according to the assumed direction of traffic.

[0003] Alternatively, EP 2 332 805 A1 discloses a setup with a ToF sensor, which provides separate detection zones instead of induction loops. However, adjusting the sensor alignment to the controlled barrier or door is still somewhat complex.

[0004] The object of the invention is to simplify the installation of a sensor in such a way that at least one action area is provided for controlling an automatic device.

[0005] This object is achieved by claim 1 for the sensor, by claim 11 for a sensor configuration method and by claim 16 for the arrangement of a door or barrier with a sensor according to claim 1.

[0006] The subclaims are advantageous embodiments of the invention.

[0007] As is well known, a sensor for an automatic door or barrier comprises a detection unit that provides a detection field. The detection unit detects objects within a monitoring area of ​​the detection field.

[0008] The detection unit maps the distance of objects detected in a surveillance zone of the detection field in a detection coordinate system, with the detection coordinate system having a detection z-axis. The distance of an object is mapped relative to the origin of the detection coordinate system. Depending on the technology used to determine the object, the detection coordinate system can be an inherent property of the detection unit. The detection unit can, in particular, be a laser scanner or a microwave radar device.

[0009] If the detection unit is a laser scanner with a rotating mirror for laser beam reflection, the detection z-axis is advantageously defined such that it runs parallel or coaxial with the mirror's rotation axis. However, if the detection unit is a microwave radar device with an antenna designed to generate a radiation pattern with a 0° axis, the z-axis is selected to be inclined at an angle of 90° to the 0° axis of the radiation pattern. The z-axis can be selected such that it corresponds to the vertical direction for the preferred use of the detection unit.

[0010] Accordingly, the detection z-axis is chosen depending on the properties of the detection unit or, in particular, depending on a radiation field.

[0011] The sensor comprises a configuration input port via which a configuration signal can be input. This allows a first configuration signal to transmit the information for performing a mapping step, based on which the detection unit then performs a mapping of the sensor's environment in the monitoring zone and thereby maps the environment, in particular static objects, into the detection coordinate system. The detection coordinate system can be a polar coordinate system or a Cartesian coordinate system. In a preferred embodiment, the detection coordinate system is a Cartesian coordinate system, even if an original coordinate system of the detection unit is a polar coordinate system. In this case, a coordinate transformation of the positions of the detections takes place from the original polar coordinate system to the Cartesian detection coordinate system.

[0012] After installing the sensor at the designated location in the field, the first configuration signal can be triggered. Upon receiving the first configuration signal, the sensor performs the step of mapping the environment in the monitoring zone. The size and position of the monitoring zone within the detection field are fixed attributes of the detection unit. To better detect changes in sensor operation, the first configuration signal is preferably transmitted while the environment is static. During this process, the technician is outside the monitoring zone.

[0013] Furthermore, the sensor configuration port includes a second configuration signal for transmitting information for generating an environmental coordinate system.

[0014] After the environment has been mapped, the second signal is input to the configuration unit to generate an environmental coordinate system. During the creation of the environmental coordinate system, a new reference position within the monitoring zone is acquired. The reference position is the position of an object that exists in addition to those represented by the environmental mapping. This object is preferably the user or the technician setting up the sensor.

[0015] Once the reference position is acquired, the ambient x-axis is defined as the connecting line between the reference position and the origin of the acquisition coordinate system. The ambient y-axis is set to be perpendicular to the ambient x-axis and the acquisition z-axis. The ambient coordinate system and the acquisition coordinate system share a common origin.

[0016] The environment coordinate system is constructed to include at least one environment x-axis and one environment y-axis.

[0017] A further advantage of the invention is that the orientation of the environmental coordinate system can be easily readjusted when the sensor is adjusted or rotated.

[0018] In addition, the sensor has at least one output terminal that outputs specific signals, each associated with a detection event in at least one monitoring field of the monitoring zone.

[0019] At least one monitoring field is defined in the environmental coordinate system. After defining the environmental coordinate system, the map of the environment is transferred, in particular transformed from the acquisition coordinate system to the environmental coordinate system.

[0020] During operation, the evaluation unit transfers, in particular transforms, the position value received from the acquisition unit into the environmental coordinate system and compares the value with the reference map and the defined monitoring zones in the environmental coordinate system to determine the specific output signal.

[0021] According to this method, the coordinate system used by the sensor according to the invention can be adapted to the environment after sensor installation. This allows the technician to easily define the basis for the coordinate system directly in the situation to be monitored by the sensor. The sensor according to the invention allows for easy alignment with the barrier or the like.

[0022] In one operating mode, the sensor operates based on the environmental coordinate system, the evaluation. Especially for moving objects in the monitoring zone, the speed and direction of these objects can be calculated with less computational effort using the environmental coordinate system.

[0023] The sensor according to the invention enables simple setup, requiring only a rough alignment of the detection field. Since the environmental coordinate system can be easily adjusted, at least one monitoring field can also be adjusted on-site without the need to visualize the monitoring zone.

[0024] According to a further advantageous embodiment, the configuration means provide a third configuration signal that causes the evaluation unit to perform a position-based monitoring field definition step. The evaluation unit defines the at least one monitoring field such that the detection unit determines a reference position of an object present in addition to the objects of the reference map. The at least one monitoring field has a trapezoidal shape and is defined such that the parallel sides of the trapezoid run parallel to the x-axis. The position of the monitoring field is defined depending on the distance of the object's reference position from the x-axis.

[0025] To configure a monitoring field in this way, the technician goes to the reference position where the position of the monitoring field is to be located. The technician can then activate the third configuration signal. The evaluation unit then defines the monitoring field by evaluating the distance to the ambient x-axis. Preferably, the evaluation unit can define a monitoring field that runs parallel to the x-axis based on the y-offset of the reference position. In particular, the depth, i.e. the size of the field in the y-direction, can have a predefined depth value. The monitoring field can then be located, for example, half the depth in the x-axis direction from the reference position and half the depth in the y-direction from the x-axis from the reference position.

[0026] According to a further embodiment of the invention, a first and a second monitoring field are provided, wherein the detection of an object in the first monitoring field is assigned a different output signal than the detection of an object in the second monitoring field. Within the scope of the invention, more than two monitoring fields can also be provided.

[0027] According to a further advantageous embodiment, the definition of the first and / or the second monitoring field takes place automatically after generation of the environmental coordinate system.

[0028] The evaluation unit may comprise a memory in which monitoring field parameters are stored.

[0029] This automatic definition of the monitoring field can be achieved through predefined parameters relating to the ambient x-axis and the ambient y-axis. This ensures that after setting up the device, at least one monitoring field is present that is assigned to a specific first output signal. In addition, a second monitoring field is present that is assigned to a second output signal that differs from the first output signal. The second monitoring field can also be defined automatically or by another setup method, for example by a position-based monitoring field definition. According to a further aspect of the invention, a first and a second monitoring field can be defined, wherein the first and / or the second monitoring field are defined by a position-based monitoring field definition.

[0030] In particular, the definition of the monitoring field can be based on predefined field parameters, which are the width of the monitoring field and / or the depth of the monitoring field. The width of the monitoring field is the length of the field in the x-direction, and the depth of the monitoring field is the length of the field in the y-direction. Another predefined parameter could be the distance of the monitoring field from the x-axis (y-offset) and / or the distance of the monitoring field from the y-axis (x-offset). The x-offset and the y-offset are the distances of the parallel sides of the smallest bounding rectangle of the monitoring field with the lowest ambient coordinate value.

[0031] The positive direction of the x-axis is defined as the direction from the origin to the reference position. The z-axis maintains the direction of the acquisition z-axis. In particular, the positive direction of the y-axis can be adjusted by the technician, but is preferably preset according to the definition of the right-hand rule.

[0032] Accordingly, the orientation of the positive y-axis can be adapted to the assumed main traffic direction to be monitored.

[0033] The width of the monitoring field can be set to the distance of the reference position used to create the environment coordinate system from the environment y-axis.

[0034] The use of predefined parameters enables rapid setup of monitoring fields, which can, however, be easily customized using the position-based monitoring field definition technique.

[0035] According to a further embodiment of the invention, the monitoring field can be defined by tracking the movement of an object in the monitoring zone, whereby the monitoring field is defined as the minimum bounding rectangle of all technician positions detected during tracking. Two sides of the minimum bounding rectangle run parallel to the x-axis. The width and depth of the monitoring field can be freely defined. Alternatively, the y-offset and the depth value are determined in this way, but the width value is set to a predefined value.

[0036] According to a further advantageous embodiment, the configuration means comprise a mobile interface that can receive information from a mobile device to generate the configuration signal. Thus, a technician can easily configure the environmental coordinate system and the at least one monitoring field using an app on a mobile device. In particular, a technician can readjust the monitoring field after initial setup using the mobile interface.

[0037] To provide the various input signals, the configuration means may also include a remote control or switches on the sensor.

[0038] According to a further advantageous embodiment, the sensor comprises a housing with a first housing part containing the detection unit, and a second housing part, relative to which the first housing part can be pivoted about the z-axis of the scanner. Thanks to such an embodiment, the detection field of the sensor can be roughly adapted to the environment and finally configured to match a barrier, door, or gate by defining the environmental coordinate system.

[0039] According to a further improvement, the sensor's output interface includes a visualization interface that provides the sensor's field of view in the environmental coordinate system, as well as the position and size of at least one monitoring field. This allows the technician to visually verify the configuration result.

[0040] Furthermore, the invention relates to a learning method for sensor configuration according to claim 11 for defining at least one monitoring field within a monitoring zone of a detection field of a detection unit of the sensor, in which the steps described below are carried out.

[0041] First, the sensor is attached to its intended position. After the sensor is placed in its position, a mapping step of the environment is performed. This mapping step maps the static environment in a detection coordinate system, where the scanner coordinate system includes a z-axis. Mapping the environment as a reference map is a common step in the training of sensors for use in automatic gates or barriers.

[0042] This is followed by an x-axis definition step, after the sensor has created its reference map. This definition step is initiated by a technician. During the x-axis definition step, an object is detected at a reference position in the monitoring zone. As already described, this object is preferably the technician. Once the technician is in the reference position, the sensor determines the reference position. This can be triggered by a command from the controller.

[0043] Once the sensor has determined the reference position, the evaluation unit defines the x-axis along the connecting line between the origin of the scanner coordinate system and the reference position. The evaluation unit generates an environmental coordinate system based on the defined x-axis and the z-axis of the scanner, with a y-axis perpendicular to the x-axis and z-axis of the scanner.

[0044] After defining the environmental coordinate system, the sensor then maps the reference map to the environmental coordinate system.

[0045] After defining the environmental coordinate system, at least one monitoring field is defined in the environmental coordinate system, whereby the detection of an object in a respective monitoring field leads to a specific output signal related to the respective monitoring field.

[0046] Once all monitoring fields have been defined, the sensor is put into operating mode.

[0047] In order to determine whether a detection has taken place within a respective monitoring field or not, the positions of detection events are transferred, in particular transformed, into the environmental coordinate system and evaluated with respect to the definition of monitoring fields in the environmental coordinate system.

[0048] Advantageously, the monitoring zone comprises a first and a second monitoring field, wherein the first monitoring field is related to the output of a safety signal and the second monitoring field is associated with an activation signal.

[0049] According to a further improvement of the sensor configuration method, a so-called teach-in method, the first monitoring field is defined to have a trapezoidal shape, in particular a rectangular shape with two sides parallel to the x-axis of the environment, with a predefined offset of one side, wherein the y-offsets are set to a specific value YO, which is the smallest value of the two sides. The monitoring field extends over a specific depth defined by a predefined depth value.

[0050] For example, the y-offset value can be determined by measuring a field setting position, where the field setting position is the reference position of an object in the position-based monitoring field definition step. To determine the y-offset value, half of a predefined depth value is subtracted from the y-value of the field setting position.

[0051] The invention further relates to an arrangement comprising a gate, a barrier or a door connected to a sensor according to the invention as described above.

[0052] The arrangement is preferably set up in such a way that the x-axis runs parallel to the barrier, gate or door monitored by the sensor.

[0053] According to a further advantageous embodiment of the invention, the sensor can determine the position and / or orientation of the barrier. Accordingly, an error can be output if the deviation of the position or orientation of the barrier and the x-axis exceeds a certain threshold angle or threshold distance.

[0054] Further advantages, features and possible applications of the present invention will become apparent from the following description in conjunction with the embodiments shown in the drawings.

[0055] Throughout the description, the claims and the figures of the drawing, the terms and associated reference symbols are used as they are listed in the attached list of reference symbols. Fig. 1 an arrangement comprising a barrier with a barrier boom and a sensor for use with the barrier in a first configuration step; Fig. 2 a second configuration step; Fig. 3 a third configuration step; Fig. 4 a schematic plan view of the arrangement of Fig. 1 Fig. 5 is a schematic view of a sensor according to the invention; and Fig. 6 a flowchart of the sensor configuration method according to the invention.

[0056] Fig. 1 shows an arrangement 10 comprising a barrier 20 with a barrier boom 22 and a sensor 30. The barrier 20 is installed on a road to which a technician wishes to add functional areas that can change the behavior of the barrier.

[0057] According to the invention, the sensor 30 comprises a detection unit (not shown) which provides a detection field 32. A sensor 30 according to the invention is shown in Fig. 5. Within the detection field 32, the detection unit creates a monitoring zone 34 in which it can detect objects and determine their position relative to the detection unit. In this example, a stationary post 10 is located within the monitoring zone 34.

[0058] There is also a technician 100 who configures the sensor 30. In the Fig. In the situation illustrated in Figure 1, the technician initiates a first configuration step by sending a first configuration signal to sensor 30. Sensor 30 is programmed to perform an environmental mapping step, during which post 110 is detected and entered into a reference map.

[0059] Fig. Figure 2 shows a second configuration step for configuring an environmental coordinate system of the sensor 30. To do so, the technician moves to a selected reference position 50, which in this case is aligned with the sensor 30 and is away from the barrier boom 22. As soon as the technician 100 decides that he is now in the reference position 50, a second configuration signal can be sent to the sensor 30 to initiate the generation of the environmental coordinate system (X E , Y E , Z E ) as described in Fig. 4. The sensor 30 scans the detection field and detects objects in the monitoring zone 32. In this case, these are the post 110 and the technician 100 in the reference position 50. Although it detects two objects, the sensor 30 ignores the post because it is known to be part of the background. Accordingly, the reference position is considered the relevant position for determining the x-axis for the environmental coordinate system. The x-axis of the environmental coordinate system is defined in the direction of the line connecting the sensor 30 and the reference position 50. The y-axis of the environmental coordinate system is the axis perpendicular to this x-axis and the z-axis of the detection unit, which is assumed to be vertical in this example.After this step, an environmental coordinate system is generated that perfectly matches the setting without the need to manually adjust the sensor 30 to the situation.

[0060] Fig. Figure 3 shows a further configuration step in which a position-based definition of a second monitoring field 38 is explained. For this purpose, the technician 100 moves to a reference position 52 around which the second monitoring field 38 is to be defined. Once the technician has assumed the position, the position-based definition step can be started by triggering a third configuration signal.

[0061] A predefined algorithm is used to define the second monitoring field 38. In this case, the algorithm defines a rectangular monitoring field with two sides parallel to the x-axis. Furthermore, a depth value D is predefined for the position-dependent monitoring field definition. In this case, the value D is 2 meters. The algorithm further specifies that the monitoring field is positioned such that its depth D is symmetrical to the reference position. In this case, the second monitoring field extends 1 meter from the reference position in the direction of the x-axis and 1 meter away from it.

[0062] This method enables the rapid setup of a monitoring field in which detection in this second monitoring field 38 leads to a specific sensor output which, for example, triggers the opening of the barrier 20.

[0063] Fig. Figure 4 illustrates the internal function of the sensor 30 in a plan view of the arrangement of Fig. 1. The sensor 30 provides a detection field 32. The detection unit has an internal coordinate system, which in this case has the x-axis Xs in the center of the detection field and the y-axis Y perpendicular to it. S defined.

[0064] The environmental scan is carried out in this scanner coordinate system (X S , Y S ). After the stationary environment (in this case, post 110) has been mapped on a reference map, the x-axis can be defined.

[0065] As can be seen here and also with reference to Fig. 2, the reference position 50 is recorded and the environment coordinate system is aligned with the environment x-axis X E and the ambient y-axis Y EThe reference map is transferred to the surrounding coordinate system, specifically transformed into it.

[0066] The next step is to define the monitoring fields. In this example, a first monitoring field 36 is defined automatically. This first monitoring field 36 has a predefined rectangular shape and is also defined by an algorithm using the predefined depth value D1 of, for example, 2 meters. The first monitoring field 36 is symmetrical with respect to its depth about the x-axis X. E the environment. The output signal associated with detection in the first monitoring field 36 is defined as a safety output, specifically such that it prevents the barrier 20 from closing as long as an object is detected within the first monitoring field 36.

[0067] The second monitoring field 38 is as described in relation to Fig. 3 described.

[0068] After configuration is complete, the sensor 30 can be put into operation mode in which the position measurements are transferred, in particular transformed, from the detection coordinate system to the environmental coordinate system and compared with the definitions and reference maps in the environmental coordinate system.

[0069] According to the invention, a complete setup of automation zones can be easily performed on-site, providing the technician 100 with a physical reference of the arrangement. If the sensor is accidentally rotated during operation, reconfiguration is thus easily possible, as only a new x-axis needs to be defined and all previously configured monitoring field definitions can be retained.

[0070] Fig. Figure 5 shows a schematic view of a sensor 30 according to the invention. The sensor 30 comprises a housing 70, wherein the housing comprises a first mounting part 72 and a housing part 74 in which the electrical components of the sensor 30 are housed. The housing part 74 is mounted in the mounting part for rotation about a rotation axis R. In this case, the rotation axis R corresponds to the z-axis.

[0071] Furthermore, the sensor 30 comprises a detection unit 64 which generates a detection field 32, as shown in Fig. 1. The detection unit 64 is preferably a microwave radar unit. The sensor 30 comprises an evaluation unit 66 and an output connection 68, which is connected during operation to a control unit 80 of an arrangement, for example, a barrier 20. The evaluation unit 66 analyzes the output information of the detection unit 64. In doing so, the detection unit creates a map of objects in a monitoring zone of the detection field. Depending on this map, the evaluation unit 66 determines which output signal is sent via the output connection 68. To select the specific output signals, the evaluation unit 66 defines specific monitoring fields in the monitoring zone according to the learning process described above. For this task, the configuration means 62 comprise a mobile input device 63a and an input receiver 63b mounted in the housing part 74.

[0072] The acquisition unit 64 may comprise a first chip that maps the objects in a acquisition coordinate system. Preferably, the chip already transforms the map from a polar coordinate system to a Cartesian coordinate system. The evaluation unit 66 may comprise a separate chip that transforms the acquisition map into the previously generated environmental coordinate system. In this environmental coordinate system, the objects are evaluated by the evaluation unit 66 with regard to position, movement, and trajectory.

[0073] The evaluation unit 66 triggers the output connection 68 depending on the evaluation result.

[0074] Fig. Figure 6 shows a flowchart of a sensor configuration method for use in the arrangement of Fig.1. After placing and roughly aligning the sensor on the gate or barrier, in this example the barrier boom 22, the so-called teaching of the sensor can begin according to the method according to the invention.

[0075] The process consists of a technician domain and a sensor domain, with the technician domain shown on the left side of the diagram and the sensor domain on the right. To configure the sensor, the technician enters an initial configuration signal. This can be done, for example, via a button on the sensor, a remote control, or even an app on a mobile device. Completion of the mapping step is preferably indicated by the sensor.

[0076] After entering the first configuration signal, the sensor maps its surroundings in its acquisition coordinate system as described above. After completing the mapping step, the technician moves to the reference position and enters the second configuration signal there. However, the second configuration signal can also be entered before the technician moves to the reference position and the sensor acquires the reference position, where the technician remains for longer than a predefined period of time.

[0077] Starting from the determined reference position, the sensor, or more precisely the evaluation unit, determines the x-axis of the environmental coordinate system and generates an environmental coordinate system.

[0078] The evaluation unit transfers, in particular transforms, the reference map into the environmental coordinate system and, in this example, automatically defines a rectangular monitoring field that is symmetrical to the x-axis of the environment with respect to its depth direction.

[0079] In this case, the technician then enters a third configuration signal, which triggers the sensor to perform a position-based monitoring field definition step. During this step, the technician moves to a reference position. Once the reference position is detected, the evaluation unit defines a second monitoring field that is rectangular and symmetrical to the depth of the reference position, with the rectangle running parallel to the surrounding system.

[0080] Alternatively or additionally, a fourth configuration signal can be input to perform a field definition step, through which the technician defines a route by walking along it. This route is recorded by the sensor, and a minimum bounding rectangle with respect to the route defines a monitoring field.

[0081] Once the definition of the monitoring fields is complete, the technician inputs a start signal that switches the sensor from configuration mode to operational mode. In operational mode, the sensor identifies detection events that differ from the reference map and compares the position of the detection events with the monitoring fields defined in the yx plane of the environmental coordinate system. During operation, all positions of the detection events are transferred, specifically transformed, into the environmental coordinate system previously configured by the technician. List of reference symbols 10 Arrangement 20 barrier 22 Barrier boom 30 sensors 32 detection field 34 Surveillance zone 36 Monitoring field 38 Monitoring field 50 Reference position 52 Reference position 62 configuration tools 63a Input 63b Recipient 64 registration unit 66 Evaluation unit 68 Output connector 70 housings 72 Fastening part 74 Housing part 80 Control 100 technicians 110 posts D Monitoring field depth W Monitoring field width QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 2 332 805 A1

[0003]

Claims

[1] Sensor (30) for use with an automatic door, gate or barrier (20), wherein the sensor (30) comprises an evaluation unit (66), an output terminal (68) and a detection unit (64), wherein the detection unit (64) provides a detection field (32) and detects the objects in a monitoring zone (34) of the detection field (32), wherein the detection unit (64) determines the position of objects detected in a monitoring zone (34) of the detection field (32), the position being relative to a detection coordinate system having a detection z-axis; the evaluation unit (66) maps the position relative to the origin of a detection coordinate system; the evaluation unit (66) can output a specific signal depending on the position of the object;the sensor (30) comprises configuration means (62) by which a configuration signal can be set to configure the relationship between position and specific output signal; wherein the configuration means (62) provide a first configuration signal for carrying out a mapping step in which the detection unit (64) maps the position of objects in the monitoring zone (34) in the detection coordinate system as a reference map; characterized by, that the configuration means (62) provide a second configuration signal such that the evaluation unit (66) generates an environment coordinate system, wherein the environment coordinate system comprises at least one environment x-axis and one environment y-axis, wherein the evaluation unit (64) determines the reference position (50) within the monitoring zone (34); the evaluation unit (64) defines the environment x-axis as the connecting line between the reference position (50) and the origin of the acquisition coordinate system; the environment y-axis is determined to be perpendicular to the x-axis and the z-axis of the acquisition coordinate system;furthermore, in the environment coordinate system at least one monitoring field (36, 38) is defined, in which the specific output signals are assigned to a detection event within the at least one monitoring field (36, 38), and after the evaluation coordinate system has been determined, the reference map is transferred from the detection coordinate system to the environment coordinate system, in particular transformed. [2] Sensor according to claim 1, characterized by , that the at least one monitoring field (36, 38) is defined by a y-offset value relative to the surrounding x-axis and a depth value (D). [3] Sensor according to claim 1 or 2, characterized by, that the configuration means provide a third configuration signal which causes the evaluation unit (62) to perform a position-related monitoring field definition of the at least one monitoring field (38) such that the detection unit (64) determines a reference position (52) of an object present in addition to the objects of the reference map, wherein the at least one monitoring field (38) is defined parallel to the x-axis and depending on the distance of the reference object to the x-axis. [4] Sensor according to any one of the preceding claims, characterized by , that a first monitoring field (36) and a second monitoring field (38) are present, wherein the detection of an object in the first monitoring field (36) is assigned to a different output signal than the detection of an object in the second monitoring field (38). [5] Sensor according to claim 4, characterized by, that the first monitoring field (36) and / or the second monitoring field (38) is automatically defined after configuration of the environment coordinate system. [6] Sensor according to claim 3 or 5, characterized by , that the first monitoring field (36) and / or the second monitoring field (38) are defined by a position-based monitoring field definition. [7] Sensor according to any one of claims 1 to 6, characterized by , that the evaluation unit (66) includes a memory in which field parameters are stored, wherein the field parameters are in particular the width (W) and / or the depth (D) of the monitoring field (36, 38) or the distance of the monitoring field (36, 38) to the x-axis (y-offset) and / or the distance of the monitoring field to the y-axis (x-offset), so that the monitoring field definition can be based on predefined values ​​of the field parameters. [8] Sensor according to any one of the preceding claims, characterized by, that the configuration means (62) include an interface (63a) that can receive information for generating the input signals received from a mobile device (63b). [9] Sensor according to any one of the preceding claims, characterized by , that the sensor has a housing with a first housing part (74) in which the detection unit (64) is contained, and a second housing part (72) with respect to which the first housing part (74) is pivotable about the z-axis of the detection coordinate system. [10] Sensor according to any one of the preceding claims, characterized by , that an output terminal (68) is provided for outputting information about the view of the sensor in the environment coordinate system as well as the position and size of the at least one monitoring field (36, 38). [11] Method for configuring a sensor to define at least one monitoring field (36, 38) within a monitoring zone (34) of a detection field (32) provided by a detection unit (64) of the sensor (30), in which the following steps are performed: a. Positioning the sensor (64) at its place of use; b. Performing a step of the environment mapping in which the static environment is mapped into a capture coordinate system, wherein the capture coordinate system includes a z-axis; characterized by , that c. an x-axis determination step is performed in which an object is detected at a reference position in the monitoring zone, and the x-axis is defined along the connecting line between the origin of the detection coordinate system and the reference position; d. an environment coordinate system is created based on the defined x-axis and the acquisition z-axis; e. the reference map is transferred, in particular transformed, into the environment coordinate system; f. at least one monitoring field (36, 38) is set up in the environment coordinate system; g. the operating mode is started in which, during operation, the positions of detection events are transferred, in particular transformed, into the evaluation coordinate system and in which a detection event in a respective monitoring field leads to a specific output signal related to the respective monitoring field (36, 38). [12] Method according to claim 11, characterized by , that the surveillance zone (34) includes a first surveillance field (36) and a second surveillance field (38). [13] Method according to claim 12, characterized by, that the first monitoring field (36) is linked to a safety signal and the second monitoring field (38) is linked to an activation signal. [14] Method according to claim 11 or 13, characterized by , that the at least one monitoring field (36, 38) is defined such that it has a trapezoidal, in particular rectangular, shape with two sides parallel to the x-axis with predetermined distances between the sides, where the distance of one side is the y-offset. [15] Method according to any one of claims 11 to 14, characterized by , that the second monitoring field (36, 38) is trapezoidal, in particular rectangular, and wherein in particular the y-offset is determined by measuring a reference position (52) from which half of a given depth value is subtracted to determine the y-offset of the respective rectangle side to the x-axis. [16] Arrangement (10) comprising a barrier (20) or a gate and a sensor (30) according to any one of the preceding claims 1 to 10, wherein the sensor (30) is used as an input device for controlling the barrier (20) or the gate. [17] Arrangement according to claim 16, characterized by , that the x-axis is defined parallel to the gate or barrier tree (22).

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