SU627501A1 - Displacement-to-code converter - Google Patents

Description

The invention relates to automation in the calculation of the field technique, can be used in digital automatic tracking systems, telemetering and remote control systems.

Known transmutation transducers into the {1J code, containing a coding element, relative to which transformer reading elements are installed, the primary windings of which are connected to the interrogation signal generator, and the secondary windings - with the inputs of output signal drivers.

Such transducers are not very sensitive due to an insufficient signal-to-noise ratio.

Closest to the proposed Converter 2, containing a coding element, relative to which transformer reading elements are installed, the primary windings of which are connected in series with the interrogation signal generator and the primary windings of compensation transformers, the secondary windings of which are connected in series with the secondary windings of the read elements to the successively with the inputs of the formers output signals.

Reliability of such converters

depends on the size and the air gap, and for the working gap of the order of 0.05-0.1 mm, you need special high-precision equipment.

The reliability of the converter operation decreases as the air gap increases. The purpose of the invention is to increase the reliability of the converter,

This is achieved by the fact that additional windings are wound on the read elements. They are connected in series in accordance with the secondary windings, and their conclusions are included in the positive feedback circuit of each driver

output signals.

The drawing shows the functional diagram of the Converter.

Claims (2)

Regarding coding element 1, transformer reading elements (reading transformers) 2 are installed, the primary windings 3 of which are connected in series with the interrogator 4 of interrogation signals and with the primary windings 5 of compensation trans- forors 6, the secondary windings 7 of which are connected in series with meetings VO with the secondary windings 8 connect the box of elements 2 and sequentially with the inputs of the drivers 9 output signals. The drawing shows one kompvnayoionny transformer b, kx can be one for each bit of the converter. Additional windings 10 are found on elements 2, representing bo & taps from the secondary windings 8 are connected in series according to. secondary windings, and the terminals of the windings 10 are injected into the positive feedback circuit of each driver 9 into the output signals (the emitter circuit of the transistor 11 of the formers). The bases of the transistors are connected and connected to the beginning of the second winding of the compensation capacitor 6 Junction 6, the beginning of the secondary windings 1O are connected to the negative power supply bus. Load a reeistor 12 drivers 9 included in the collector cemt transistors. Coding apement 1 is made in the form of a drum, on which a code mask of ferromagnetic and diamageitic is applied. elements placed in accordance with the selected code. The Converter operates as follows. When the signal is read, the negative polarity from the formers 4 (the signal of the eirus on the primary windings of § and 5) is the corresponding signal to. The output signal in the windings 8 depends on the position of the coding element 1. At 1katag. (With air gap) the reading element 2 by a diamagnetic element, the signal in the winding 8 is approximately equal in the winding 7 of the compensation transformer 6, the current in the basic-emitter circuit of the transistors is zero, the transistors are locked, and there is no signal on the corresponding inputs, At the approach to the reading element 2 of the ferromagnetic element, the signal in the output winding of the transformer 8 rises, an opening current occurs in the basic circuit of the transistor, and the transistor opens slightly. By appropriately turning on the winding 10, it opens like an avalanche to saturation. A high-voltage transistor produces a signal with an amplitude approximately equal to the voltage of the power source V which corresponds to the code. The converter described reliably functions when the air gap is changed within 9il-O, 7 mm, which significantly reduces the requirements for accuracy and readiness, adjustment and operating conditions of the converter (fluctuation of the supply voltage and the level of the interrogation signal, temperature change and other environmental conditions) . Claims of the Inverter Mixing converter into a code containing the coding sjreifeHT, for which transformer reading elements are installed, the primary windings of which are connected in series with the polling driver and the primary windings of compensation transformers, secondary t 6MOTifCH of which are connected in series with the secondary windings of the syllables of the symphony transformer. inputs for output signal shaper, characterized in that, from the second to its increase, 1 (counting The wiring elements are wound with complementary windings connected in series with the secondary windings, and their conclusions are included in the positive feedback of each output driver. Sources of information taken into account in the examination: 1. Authors svetoteltotvo USSR NO 204190, G , 08 C 9/04, 03.03. 66 2. USSR Author's Certificate NO 389540, Q 08 C 9/04, 07.27.76.