RU209891U1 - Contact block for diagnosing the steering angle sensor - Google Patents

Abstract

The device relates to measuring technology, can be used in the aviation, rocket and space, radio-electronic industries, is intended for diagnosing rotation angle sensors. the unit for diagnosing the rotation angle sensor consists of a housing, spring-loaded contacts, a contact cover, a removable latch, an indication panel that includes a diode bar and a reflector, and a control board that includes a support pad, a support board, a power supply, electronic boards for controlling contact ringing and harness, while the contacts of the contact block are closed only with that group of contacts of the angle of rotation sensor being checked, which are intended for monitoring parameters.

Description

Field of technology to which the utility model belongs

The device relates to measuring technology, can be used in the aviation, rocket and space, radio-electronic industries, is intended for diagnosing the angle of rotation sensors (a thorough analysis of the manufacturing quality is important for the further operation of the angle of rotation sensors) and is aimed at providing the possibility of automating the processes of checking and testing the front angle sensors. by installing them on the rotator.

The rotation angle sensor is an electromechanical machine that is capable of creating electrical impulses that form the operating modes of the rotary device (in which the sensor is mounted) when the rotor windings rotate relative to the stator windings. The rotation angle sensor consists of a housing, two stator windings and two rotor windings. The sensor has serious technical requirements for its parameters. The deviation of the tolerance field of technical parameters (for example, output voltage) must be within the specified limits.

There are angle sensors with a pre-soldered connector for connecting contacts. The claimed utility model is intended for testing angle sensors without soldered connectors. Such sensors are more reliable in operation, since the number of contacts during connection is limited (for obvious reasons, there are fewer contacts than in sensors with soldered connectors).

Before installation in the product, it is necessary to check the technical parameters of the sensor (insulation resistance, resistance of the primary and secondary windings, current in the primary winding, minimum voltage between the contacts, secondary voltage when the angle changes within the specified limits, etc.) at:

- reliable automatic fixation of the angle sensor;

- availability of reliable contact;

- closure of some contacts (upper) while maintaining the insulation of the remaining contacts (lower).

State of the art

To test sensors without ready-made soldered connectors, a method is usually used where a group of contacts of the sensor under test must be connected to the measuring equipment and fixed manually. In this case, the lower group of contacts of the contact block of the sensors (Fig. 1) must be isolated during diagnostics. The upper contacts of the sensor are control (secondary), and the lower contacts are the main (working). The lower contacts at the time of installation in the rotary device should not have dents, notches, scratches and microcracks, otherwise the subsequent soldering of the contacts during the installation of the product harness becomes difficult and of poor quality. Manual fixation of the sensor to the measuring equipment occurs according to the following algorithm. First, the operator closes the top and bottom terminals at the same time. Then manually shifts the contacts to the upper contact group, fixes this position, for example, with screws. It is quite difficult to achieve isolation of the lower contacts of the sensor manually; diagnostic time increases, and the quality of diagnostics decreases. This makes it difficult to check the sensor parameters and leads to distortion of the obtained results.

The closest analogue of the claimed utility model is the "Contact group for diagnosing the angle sensor" (patent No. 204668). This device is used for automatic diagnosis of the angle sensor. The formula of this analogue is: “The contact group of the angle sensor, consisting of a body, contacts, including limiters of contacts and contact rods, contact covers, 4 springs, characterized in that the contacts of the contact group are closed only with that group of contacts of the angle of rotation sensor being checked, which designed to control parameters; body and body cover of the body of the contact group hold the spring-loaded sensor with a tight fit and a five-lobed grip.

When using this device for automatic diagnostics, several technical problems were identified:

1) for a qualitative check of the characteristics of the sensor, it is necessary to close all the upper contacts, which does not always happen in practice - whether all the upper contacts are closed or not, it is possible to determine only after taking the characteristics of the sensor (according to the results of checking the characteristics);

2) due to the fact that when the sensor is fixed in the contact group, elastic deformation of the retainer petals occurs (microcracks and dents appear on the fractures), accelerated wear of the contact group occurs, and due to the fact that the retainer is non-removable, it is difficult to remove the sensor from the contact group after checking characteristics;

3) the contact springs are open, and when the sensor is fixed in the contact block, the springs rub against the housing walls.

Disclosure of the essence of the utility model

The contact block is a system of contacts that allows you to receive and apply electrical signals of the angle sensor being checked without loss and failure of technical characteristics to all working contacts of the sensor in a certain sequence. The contacts of the contact block are closed only with that group of contacts of the angle of rotation sensor being checked, which are intended for monitoring parameters, and information about the malfunction of the sensor contacts occurs immediately after the sensor is fixed in the contact block (before the start of checking the technical parameters).

The difference between the claimed utility model and the closest analogue:

- the presence of boards for ringing contacts and a harness;

- the presence of an indication of the closure of contacts, that is, the position of the sensor in the contact block can be adjusted or the sensor itself can be replaced before starting the performance check;

- the presence of a removable clamp;

- contacts with closed springs are used.

Technical result

Obtaining information about the failure of the sensor contacts before starting to check the technical parameters and, as a result, reducing the time for checking the sensor.

Brief description of the drawings

On the contact block of the sensor (Fig. 1) there are 8 contacts - 4 upper and 4 lower. The design of the sensor provides 2 windings. In order to receive information from the sensor, the pulses must occur alternately on the two windings. The output contacts of the sensor windings are doubled - the upper ones are designed to control the parameters, the lower ones - to obtain digital information on the angle of rotation. The upper contacts of the sensor when it is installed in the body of the contact block are closed with the contacts of the contact block.

On FIG. 2 shows a drawing of the contact block of the angle sensor, which consists of a housing (pos. 1), a housing cover (pos. 3), a removable latch (pos. 2), 5 contacts (pos. 11), a control board and an indication panel ( diode bar (pos. 9) with reflectors (pos. 10)). The control board includes a power supply (power supply housing (pos. 7) and a battery (pos. 8)), a support pad (pos. 4), a support board (pos. 5), electronic control boards for contact ringing and a harness (pos. .6). Electronic boards are installed in special places on the support platform and control the indication and ringing panel circuits, as well as turn off the power source after the contact check algorithm has been completed. The tested angle sensor (pos. 12) is inserted into the body of the contact group (pos. 1) and fixed in a regular place - a special groove for fixing the contact block. The contact of the contact block (pos. 11) consists of 2 cylinders, inside of which a spring is forced. The contacts of the contact block, as well as the wires of the harness going to the automatic diagnostic stand, are soldered into the control board. The lower contacts of the sensor remain unused. The housing cover (pos. 3) is used to fix the control board and the power supply in it and is attached to the housing (pos. 1) using screws (pos. 13). There is a viewing window on the body, with which you can visually observe the contact connection.

On FIG. 3 shows a model of a contact block with a rotation angle sensor inserted into it, and in Fig. 4 - external view of the contact block.

Implementation of the utility model

Angle sensor contact block, consisting of a housing, 5 spring-loaded contacts, a contact cover, a retainer, a control board, an indication panel. The contacts of the contact block are closed only with that group of contacts of the angle of rotation sensor being checked, which are intended for monitoring parameters, and information about the malfunction of the sensor contacts occurs immediately after the sensor is fixed in the contact block (before the start of checking the technical parameters).

The housing, housing cover, retainer, support plate, control board support pad are 3D printed from Nylon 12 phelomen and hold the spring-loaded sensor with a snug fit and a five-lobed retainer.

New is the ability to obtain information about the presence of contacts using the display panel and detect a malfunction of the sensor contacts before characterization, that is, time is saved for automatic diagnostics of the angle sensor.

The following is the principle of operation of the proposed device.

Remove the retainer from the body of the contact block. We insert the rotation angle sensor to be checked into the body of the contact block so that the sensor contacts coincide with the contacts of the contact block. We put on the lock and turn it counterclockwise to captivate the sensor. An indication of the presence of contacts on the diode line with reflectors appears. If there is no short circuit indication for at least one contact (at least one diode of the contact line does not light up), the contact block harness is automatically ringed and the contacts are repeated. If there is no indication again for at least one contact, the sensor is rejected. If all contacts are indicated, the power supply of the indication panel is turned off automatically, and the contact block with the sensor under test is fixed in the contact block holder on the stand for automatic diagnostics of the angle of rotation sensor to check the characteristics of the sensor according to the algorithm.

Claims (1)

Contact block for diagnosing a rotation angle sensor, consisting of a housing, spring-loaded contacts, a contact cover, a removable latch, an indication panel that includes a diode bar and a reflector, and a control board that includes a support pad, a support board, a power supply, electronic dial control boards contacts and a harness, while the contacts of the contact block are closed only with that group of contacts of the angle of rotation sensor being checked, which are intended for monitoring parameters.

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