SU422973A1 - DIGITAL REGISTRATION DEVICE FOR * "WEIGHT MEASURING MECHANISMS - Google Patents

Description

one

The invention relates to the field of weighing technology.

Digital recording devices are known for weighing mechanisms that contain a moving scale and a digital recording mechanism with a switch.

These devices are structurally complex and have insufficient performance.

In order to eliminate the above disadvantages, in the proposed device, discrete sensors interacting with the arrow of the weight mechanism, connected through the switch to the upper section of the digital recording mechanism, are installed at equal intervals, and tags interacting with two discrete sensors are installed at the top of the mobile scale. a discrete position sensor connected to the lower bit of the digital recording mechanism.

The drawing shows the described device.

The load-bearing unit 1 rests on load sensors 2 connected in a bridge circuit together with a potentiometer 3, the slider of which is connected to a reversing motor 4 connected to the amplifier 5. The motor 4 moves the guide arrow 8 through the rollers 6 and the cable 7.

On a movable scale 9 at regular intervals, discrete sensors 10 are installed, interacting with arrow 8 and connected via switch 11 to the upper bit of the digital recording mechanism 12.

One of the sections of the scale 9 is divided into equal segments by means of tags 13, interacting with a discrete sensor 14 connected via a counter 15 n decoder 16 to the lower bit of a digital recording meaNIIa 12.

The movable scale 9 is connected to the servo 17 by means of a roller 18 on which; 1 a flexible cable 19.

The servo drive 17 is controlled by the switch 11.

The device works as follows.

When the load on the load-receiving unit is applied, the bridge circuit formed by sensors 2 and potentiometer 3 is unbalanced. The unbalance signal is amplified by amplifier 5 and is fed to engine 4, which moves pointer arrow 8 to a new value. At the same time, the motor 4 moves the potentiometer slider 3 in the direction of decreasing the imbalance.

The inclusion of digital registration can occur for a given program from a special unit (not shown in the drawing) or at the operator’s command.

In this case, the switch 11 is connected. If the pointer arrow 8 is in the zone of operation of one ns sensor 10, the signal from this sensor through the switch 11 enters the upper bit of the digital recording mechanism 12, the low bits will be fixed as zeros.

If the indicator arrow 8 is between the sensors 10, the servo driver 17 is turned on, moving the movable scale 9 from left to right. With this, from the sensor 14, through the counter 15 and the decoder 16, the number of pulses arrives at the lower digit of the digital recording mechanism 12, which is relative to the movement of the sensors 10.

The upper bit of the mechanism 12 receives a signal from the sensor 10, aligning it with the arrow 8.

After the registration is completed, the servo drive 17 returns the movable scale 9 to its original position, at which the crane tag 13 is in range of the sensor 14.

P ip e dme t inventions

A digital recording device for weighing mechanisms, containing a movable scale and a digital recording mechanism with a switch, characterized in that, in order to simplify and improve speed, there are discrete sensors connected to the weight mechanism connected to the arrow at equal intervals, connected via a switch to the top bit of the digital recording mechanism, and on one of the sections of the moving scale between two discrete sensors, labels are set, stvuyuschie discrete position sensor, nodklyuchennym to the least significant bit do digital recording mechanism.