FR2762087A1 - DETECTOR MODULE - Google Patents

Abstract

A detector module is provided comprising a detector (7) for detecting a weight value on a processing machine and an evaluation unit (6) for the signal from the detector (7). The first detector (7) is accommodated, together with at least one further position / tilt detector (9, 10) for detecting the position or tilt of, for example, an agricultural vehicle and with the evaluation unit ( 6), in the housing (2) of the detector module (1). The weight value as an output signal of the detector module (1) can be determined by evaluating all the signals of the detectors (7, 9, 10).

Description

STATE OF THE ART The invention relates to a detector module, in

  particular for a processing machine in agriculture or road construction, in which it is necessary to be able to detect several data relating to the position or to the weight, comprising a detector for detecting a weight value on a processing machine and a unit

  for the detector signal.

  In known processing machines, for example in vehicles for spreading fertilizer in agriculture, one must

  determine the amount of fertilizer spread by measuring the weight.

  Similarly, the acceleration and the tilting position of the vehicle must be detected, in order to ensure a regular distribution of the material to be

spread on the surface.

  The data to be detected is detected in the usual way at various locations on the vehicle and is processed in a central evaluation and control device. To calibrate and adjust the starting position of the vehicle, each detector must be calibrated and compensated

  individual before starting treatment.

  Advantages of the invention A detector module of the type described in the introduction is characterized in that the first detector is housed, together with at least one other position / tilt detector to detect the position of the processing machine and with the unit in the detector module housing, and that an output signal from the detector module can be determined by evaluating all of the detector signals. Thanks to this, the advantage consists in greatly simplifying the manufacturing and mounting of the necessary detectors in the processing machine.

  thanks to the complex structural design of the detector module.

  In a preferred embodiment, for example in an agricultural vehicle, the detector module has two acceleration detectors, one of which is intended for tilting the vehicle in the direction of driving and the other of which is intended for tilt transversely to the driving direction, as well as a pressure sensor to measure the hydraulic pressure in the hydraulic system. In this case, the measurement of the inclination is effected by means of the detection of the acceleration, the output signal of the acceleration detector being the product of the terrestrial acceleration and the sine of the angle of inclination and thus the angle of inclination is directly proportional to the inclination of the working device in the field, inclination which must be taken into account.

account in the weighing process.

  In particular, the detector module according to the invention allows in a simple way to avoid falsifications of the value measured during the weighing of a material to be spread with the vehicle because of an inclination of the machine relative to the horizontal, already when forming the weight value for the material to be weighed. Since an electronic evaluation unit is provided directly in the detector module, there are data at the output of the detector module for the material to be dispersed which are corrected with regard to falsifications due to modifications of vehicle position / tilt. The arrangement of the detector module on the corresponding parts of the vehicle is carried out in an advantageous manner so that tilt errors of a few degrees due to mounting at the mounting location can be eliminated by adjustment

  simple internal software, and this also in the state mounted on the vehicle.

  Thanks to this, it is no longer necessary to put the detector module

  exactly in a horizontal position at the mounting location.

  Thanks to a corresponding embodiment of a support part in the detector module, the individual detectors can be fixed directly by simple mounting operations. The evaluation unit also housed in the detector module includes both the electronic unit for evaluating the signal from the pressure detector and an electronic calculator component which delivers, as mentioned above, the value which exactly corresponds to the mass to be weighed, using signals from the tilt sensor. In addition, the computer component can also deliver control signals which act on a system for metering the material to be spread in correspondence. Other advantageous developments of the invention emerge from what

follows and drawings.

  An exemplary embodiment of the detector module according to the invention is explained in more detail with reference to the drawings. The figures show: Figure 1 a view of a detector module enclosed in a housing; FIG. 2 a first view of the interior of the detector module, with a view to an evaluation unit; and Figure 3 a second view of the interior of the detector module, in view

on individual detectors.

  Description of the exemplary embodiment

  In the exemplary embodiment of a detector module 1 according to FIG. 1, a housing 2 comprising a fixing device 3 is shown on an agricultural tractor as an agricultural treatment machine, which is not illustrated here. There is provided on the housing 1 a pressure connection 4 for the pressure supply of a hydraulic unit and an electrical connection socket 5 for an analog signal output and / or

digital of the detector module 1.

  FIG. 2 shows the interior of the detector module I in view on an electronic evaluation unit 6 and it illustrates the position of a pressure detector 7 as the first detector on a support part 8. The pressure connection 4 not visible here leads into the pressure detector 7, and in principle we can deduce a weight value from the measured hydraulic pressure, for example on

  a reserve container for a material to be spread.

  The view according to FIG. 3 shows, in a mounted position, assuming that the driving direction of the vehicle takes place in the y direction, a first position / inclination detector 9 for detecting the inclination in the driving direction and a second detector position / tilt 10 to detect the tilt transverse to the

  driving direction in direction x.

  The electronic evaluation unit 6 visible in FIG. 2 comprises electronic components controlled by software, and it digitizes the possibly analog signals of the individual detectors 7, 9 and 10 and associates them with each other, so that falsifications of the measurement value of the output signal of the pressure detector 7 are eliminated during the weighing of the material to be dispersed with the vehicle, falsifications which are due to an inclination of the vehicle relative to the horizontal in direction x and also in

direction y.

  Since the electronic evaluation unit 6 is mounted directly in the detector module 1 also on the support part 8 together with the individual detectors 7, 9 and 10, values are directly available at the connection socket 5 of weight for the material to be spread which are corrected vis-à-vis

  falsifications due to changes in vehicle position.

  In addition, the electronic evaluation unit 6 is provided with an electronic calculator component which can also make available control signals via the connection socket 5, which can act on an electromechanical system for the corresponding dosage of the

s material to spread.

Claims (6)

Claims   1. Detector module comprising: - a detector (7) for detecting a weight value on a processing machine and an evaluation unit (6) for the detector signal (7), characterized in that: - the first detector (7) is housed, together with at least one other position / tilt detector (9, 10) for detecting the position of the processing machine and with the evaluation unit (6), in the housing (2) of the detector module (1), and in that - an output signal of the detector module (1) can be determined by   evaluating all the signals from the detectors (7, 9, 10).   2. Detector module according to claim 1, characterized in that the detectors (7, 9, 10) and the electronic evaluation unit (6) are fixedly arranged on a common support part (8) in the housing (2) of the detector module (1) and can be calibrated   before mounting in the processing machine.   3. Detector module according to either of claims 1 and 2,   characterized in that the first detector is a pressure detector (7) by means of which a weight value can be deduced from hydraulic pressure, using signals from other people   position / tilt detectors (9, 10).   4. Detector module according to any one of the claims   previous, characterized in that the other position / inclination detectors (9, 10) are acceleration detectors by means of which an inclination of the processing machine in the direction of a predetermined x and / or y direction can be deduced from the acceleration values according to the equation:   Earth acceleration multiplied by the sine of the angle of inclination.   5. Detector module according to any one of the claims   above, characterized in that the evaluation unit (6) has an electronic calculator component for determining values of   control for the processing machine.   6. Detector module according to any one of the claims   above, characterized in that the detector module (1) is used on an agricultural vehicle as a processing machine for   measure the weight of a material to be spread.