SU382095A1 - AUTOMATIC CONTROL SYSTEM OF ELECTRICAL PARAMETERS OF ELECTRONIC CIRCUITS - Google Patents

Description

one

The invention relates to the field of control computing technology and can be used to test electronic circuits, including digital hybrid and semiconductor integrated circuits.

A known system for automatically controlling the electrical parameters of electrode circuits, containing workstations, pairs of inputs of switches which are interconnected and connected to the outputs of the switching matrix of the measuring device, a matching device, the inputs of which are connected to a control computer (UVM), and outputs to a block of loads , switching matrix, control and indication unit, measuring unit, software voltage sources, and measuring device current, as well as a switch and a storage device for each work station.

In order to assess the performance and to increase the reliability of the monitoring results of the measuring device and the working posts of the automatic control systems of electrical parameters of electronic circuits, the operator is forced through statistically selected or in the case of monitoring a certain number of rejected circuits to stop the system in control chip mode and set the attribute

the control program of the measuring device, which leads to the need for constant involvement of the operator to control the measuring devices, to reduce the performance and reliability of the system of automatic control of electronic circuit parameters.

The aim of the invention is to eliminate this drawback.

The task is achieved by introducing a threshold unit into the automatic control system of the electronic circuits, the inputs of which are connected to the outputs of the storage device and the output to the corresponding input of the additional OR circuit, the output of which is connected to the input of the additional time relay and the input of the priority. interruption of the control device, and the output of the time relay is connected to the corresponding input of the circuit “OR.

The drawing shows a system for automatic control of electrical parameters of electronic circuits.

The proposed system contains workstations /, pairs of inputs 2 of switches 3, which are interconnected and connected to outputs 4 of the switching matrix 5 of the measuring device 6, matching device 7, whose inputs are connected to the DCM

8, and outputs - with a load unit 9, a switching matrix 5, a control and display unit 10, a measuring device 11, software sources of voltage 12 and current 13 of a measuring device 6, as well as a switch 3 and a storage device 14 of each working station 1, the threshold unit 15, which by its inputs 16 and “Reset 17 is connected to outputs 18 and 19 of storage device 14, and output 20 - to the corresponding input 21 of the additional circuit“ OR 22, output 23 of which QR is connected to the input “Reset 24 of additional time relay 25 and through device agreed SOVA 7 - to the input of the interrupt .prioritetnogo 26 HPA 8 and the output time switch 27 is connected to the corresponding input 28 an additional "OR circuit 22.

The operation of the automatic kuntrol system of electronic circuit parameters is as follows.

The control computer S issues, through a matching unit 7 to the measuring device 6, a test program of the controlled electronic circuit 29 containing data on the necessary switches in the switching matrix 5, on switching on the switch 3 at the working post, on the values of the voltages that should be issued from the software sources 12 and the software current source 13, on the operating modes of the measuring device 11, the HOMeipa information of the monitored circuit and the number of the test performed on the control unit and indicator .. Tion 10, etc. In the process of testing electronic circuits operator on an electronic time relay 25 of the measuring unit 6 sets a time, and the pickup unit 15 working Lost / - value of br: akovannyh circuits, after which should be included program control the measuring unit 6.

After a time interval set at time relay 25, the input 28 of the OR circuit 22 receives the enable signal of the monitoring program of the measuring station, and from the output 23 of the OR circuit 22, the control program enable signal enters the input Reset 24 of the time relay, set to the last the initial state, and after the matching device 7 of the measuring device 6, the signal for activating the monitoring programs enters the input of the priority interrupt 26 of the UME 8 and starts, instead of the electronic test program, the monitoring program of the measuring devices tion device 6 and the working position /.

The control program of the measuring device 6 and the work post / is turned on if the output of the 20th threshold block 15 of the work post / a signal is received to activate the control programs at input 21 (or other inputs) of the OR 22 circuit.

A signal at the output 20 of the threshold block 15 of the work post / appears in the event that the input 16 of the threshold block 15 of the work post / receives the number of signals "Marriage from the output 19 of the storage device 14,

storing the results of monitoring the parameters of electronic circuits, equal to the number of permissible rejected circuits established by the operator. If during the period of counting the number of schemes “Marriage of the threshold unit 15 of the

the post / input "Reset 17" signal from the external signal comes from the output of the "Pass 18 of the storage device 14, then the threshold unit 15 is reset.

The use of such systems. Automatic control of electronic circuit parameters in the areas of technological and output control of parameters of digital integrated circuits by reducing the transition time to

control mode will increase productivity by 3-5% and timely monitoring of the measuring station will reduce the risk of the supplier in the areas of technological control by 10-15%, and

output control - 5-10%.

Subject invention

The system of automatic control of electrical pairs of electronic circuits containing working posts, pairs of inputs of KOTqpbix switches are interconnected and connected to the outputs of the switching matrix

measuring device, a matching device, the inputs of which are connected to the control by a computing machine, and the outputs with a load unit, a switching matrix, a measuring unit, software

sources of voltage and current of the measuring device, as well as a switch and storage device of each work station, characterized in that, in order to increase the reliability of the control results,

A threshold block has been entered into it, the inputs of which are connected to the outputs of the storage device, and the output is connected to the corresponding input of the additional OR circuit, the output of which is connected to the input of the additional

the time relay and through the matching device to the priority interrupt input of the controlling computer, and the time relay output is connected to the corresponding input of the OR circuit.

T

2 /