SU1539811A1 - Device for accounting for results of public opinion polls - Google Patents

Abstract

The invention relates to accounting automation and can be used when polling public opinion on a questionnaire. The aim of the invention is to simplify its operation. The device contains sensors 1 made of keys 2, code converters 3, memory elements 4, decoders 5, counters 6, 9, pulse shapers 7, triggers 8 and pulse generator 10. After one switch 2 of sensor 1 is activated, elements 3 and 8 of converter 3 are blocked. This eliminates the multiple accounting of individual accounting results. 1 il.

Description

The invention relates to automation of accounting and can be used in a survey of public opinion on the questionnaire.

The aim of the invention is to simplify the operation of the device and increase its accuracy by blocking the operation of the device with unauthorized entry of answers.

The drawing shows a functional diagram of the proposed device.

The device contains in each accounting channel, according to the number of questions in the questionnaire 15, a sensor 1 made of N keys 2, code converters 3, memory elements 4, a decoder 5, N counters 6, a pulse shaper 7, a trigger, as well as a counter 9 and a generator 10 im- jo heartbeats ..

The questionnaire is performed in the whole poster.

Questionnaire questions and answers to them are numbered accordingly. Each question is associated with 25 a specific channel accounting device.

'Each group of numbered answers related to a specific question in the questionnaire is assigned a sensor key. ₃ θ

Sensors 1 are a remote control with keys 2 having serial numbers that correspond to the serial numbers of the responses.

Some contacts of the keys 2 are interconnected and connected to a common zero bus for Sensors 1.

Code converter 3 is a priority encoder. It will convert a single-position code at the inputs to binary code at the outputs, while the high-order bit of the input takes precedence over the low-order bit. Code converter 3 has a control input, and an active signal is present on the number keys 2 Sensor 1 data inputs and data outputs of the binary code and the baseband signal output on which a pulse if at least one of _£ information outputs. The presence of signal ”1 at the control input makes all information inputs inactive with respect to signal levels _ς .

The memory elements 4 are made on D-flip-flops, the clock inputs of which are combined into one clock input.

Decoder 5 converts the binary code at the inputs into a single-position code at vb <odes.

Counters 6 are combined with indicators and have sufficient capacity to conduct a survey.

Shapers 7 are made on logical elements. When a positive voltage drop is applied to the input, a short pulse is generated at the output of the former.

Counter 9 has controls for starting, setting a response code, as well as an independent indicator of operation.

The questionnaire and the device are placed in a convenient place for questioning. Interviewees, having previously familiarized themselves with the contents of the questionnaire and notified about the survey, take turns approaching the console and press the desired button. The meter monitors the polling procedure and, if necessary, adjusts the time counter of counter 9 to the speed of the queue.

In the initial state, the counters 6 are reset to zero. At the output of triggers 8, signal 0.

If none of the keys 2 of the remote control is pressed, the signal I acts on all outputs of the code converter 3, When you click on any of the buttons of the sensor 1, the inverse code corresponding to the number of the pressed key 2 appears on the information outputs of the code converter 3, and at the output of the group signal - 0.

When the key 2 is released, the positive edge from the output of the group signal, arriving at the clock input of the memory element 4, writes the code to the triggers of the memory element 4. From the outputs of the memory element 4, the code goes to the inputs of the decoder 5 and at its output, corresponding to the pressed key 2, a signal appears that goes to the input of the corresponding counter 6 and changes its state. If there is a chatter, the code will be recorded on the first opening due to the chatter of the contacts of the key 2. Outwardly, it will look like a response when the key is pressed.

Further bounce does not affect the recording result. If you first press one key 2, and then, without releasing it, the second, then the code corresponding to the last issued key is written to the triggers of the memory element.

If one imagines strictly simultaneous release of keys 2, the code corresponding to key 2 with a large number is written, which is determined by the property of the priority encoder. When the key is released, the positive edge from the output of the group signal goes to the input of the driver 7 and generates a short pulse at its output, which is fed to the input of the trigger 8 and puts it in a state with 1 at the output. From the output of the trigger 8 ed signal 1 is fed to the control input of the Converter 3 code. As a result, the information inputs of the code converter 3 become inactive with respect to signal levels.

After a predetermined time interval, the pulse from the output of the counter 9 enters the first input of the triggers 8 and returns them to their original state. The device is ready to receive the next signal from sensors 1.

Claims (1)

Claim A device for recording the results of a public opinion poll containing a pulse generator and metering channels, in each of which the sensor is made of N keys, the outputs of which are connected to the first inputs of the code converter, the first output of the decoder is connected to the input of the first counter, characterized in that, in order to improve the accuracy and simplify the operation of the device, a counter is introduced into it and a memory element, pulse shaper, trigger and N-1 counters in each metering channel, in each metering channel the first outputs of the code converter with are connected to the first inputs of the memory element, the outputs of which are connected to the * inputs of the decoder, the second outputs of which are connected to the inputs of N-1 counters, the second output of the code converter is connected to the second input of the memory element and, through the pulse former, to the first input of the trigger, the output of which is connected to the second with the input of the code converter, the output of the generator ^and pulses through the counter is connected to the second inputs of the triggers of all metering channels, in each of which the code converter is made in the input of the on-off code converter to binary.