CN2035076U - Cable length intelligent measure instrument - Google Patents

Abstract

Disclosed is a length measuring apparatus for electric wires and cables, comprising a pulse shaping and label phase circuit, a microcomputer system circuit, a given circuit and a display circuit. According to the given length of a cable, the apparatus receives pulse signals which is directly proportional with the length of the cable from the scene of action and sends out switching control signals at real time via the processing of a computer. The utility model can also carry out the automatic compensation of error of the length of the cable according to the given length. The utility model has the advantages of high measuring precision and high reliability. Besides, the utility model also has the functions of the data display of the production process of cables, the detecting and the record of the position of spark points, current failure memory, etc.

Description

Cable length intelligent measure instrument

What the present invention relates to is a kind of electric wire length measuring apparatus device of being made up of microcomputer.

The cable horizontal metroscope is commonly called as meter counter at cable industry, widespread use at present be a kind of mechanical hook-up.The major defect of machinery horizontal metroscope is: 1. measuring accuracy is low.Because mechanical horizontal metroscope do not have autocompensation installation, during measurement because machinery skids and the cumulative errors that cause of wearing and tearing are bigger.2. equipment dependability is poor.The machinery horizontal metroscope drives counter by mechanical driving device, usually owing to insufficient lubrication makes the counter stall.

The objective of the invention is to overcome the above shortcoming of mechanical horizontal metroscope.Electrical cable intelligent horizontal metroscope measuring accuracy height, good reliability, highly sensitive, and have the data presentation of cable production run, the detection and the record of spark point position, and a series of functions such as power failure data accumulating, the user is very easy to use.

Fig. 1 is the functional-block diagram of apparatus of the present invention.

Fig. 2 is the software flow pattern of apparatus of the present invention.

Fig. 3, Fig. 4, Fig. 5, Fig. 6 are the hardware configuration schematic diagrams that apparatus of the present invention typical case implements.

In Fig. 5, T ₁Strong for clear display contents, T is strong for the numerical value of current display being deposited memory, T ₃For spark point position read strong, T ₄For showing cable cumulative length key.

In Fig. 6, T ₅Be system reset key.

More than the definition of each function key depend on software, revise software, can redefine on request each function key.

Apparatus of the present invention are made up of following several parts: see Fig. 3, Fig. 4, Fig. 5, Fig. 6.Shaping pulse with sign mutually.This a part of circuit is by monostalbe trigger, and Sheffer stroke gate and photoelectricity are isolated and formed.Its effect is that the scene is represented that the pulse signal of cable length becomes the fiduciary level pulse signal that computing machine can receive, and carries out the isolation and the shaping pulse of on-site signal and Computer signal in this process, and the identification cable roller is just to change or reverse.

2. microsystem.This a part of circuit is by computer CPU, and programmable hardware timer conter memory and clock are formed.Its effect is by the on-the-spot pulse signal after the software reception shaping, counts, and control signal is in time sent in data processing, memory.Can also accept the dried of hardware capability keyboard signal gives and handles.

3. the given and compensation of cable active length is given.This a part of circuit is made up of the input interface of ASCL sign indicating number hardware dial and computing machine.Its effect is: the active length of cable and compensating length are sent into microsystem.

4. digital the demonstration.This circuit is made up of eight sections charactron charactron drivers and computer interface.Its effect is to show the cable length value that Computer Processing is calculated under the general work.Have when keyboard is dried to give, show by functional requirement.

5. the keyboard of specific function is selected.This a part of circuit is made up of hardware contact switch and computer interface circuits.Its effect is to realize system reset by software, displaying contents " zero " memory cell clear 0, store the dish value of each task cable and the total cable length of each task of length accumulative total, show the reel number and the length of each task cable successively, show the position of spark point successively.

6. switching value output, this a part of circuit is made up of 8 bit data latchs and relay.Its effect is to provide the switching value control signal for the working site.

This horizontal metroscope is work like this: 1. cable is surveyed long.The pulse producer of on-the-spot detection streamer length, the pulse number of this generator output is directly proportional with cable length, and it has the two-way pulse output end, and an end is called the A phase, and the other end is called the B phase.As shown in Figure 3, pulse producer A phase termination INA, another termination INB.When INA has pulse signal, isolate through 4N25 photoelectricity, and divide two-way to deliver to 74Ls123 pulse through phase inverter and carry out shaping, a monostalbe trigger connects negative edge and triggers, another monostalbe trigger connects rising edge and triggers, and the pulse signal of INB is used to control the counting channel of rotating pulse by two not gates.When the leading mutually B phase time of A, 74Lsoo /Pin11 has pulse signal to pass through, and this moment, C/TO counted in order just to change.When the leading mutually A phase time of B, the Pin8 of 74Lsoo has pulse signal to pass through, and is counter-rotating, C/T this moment ₁Counting.

2. microsystem, CPU is according to system software, in time send control signal to each parts, CTC serves as the full sized pules signal after shaping that reception sent here by sensor and counts, when down counter goes back to " 0 ", send a look-at-me to CPU, CPU send the internal memory storage with accumulative total after response is interrupted and carried out interruption subroutine, and send display to show the data of storage, when external keyboard is dried when giving, the CPU execute key is handled subroutine.

3. cable length is given given with compensation: the external circuit structure has 8 ASCLL code-discs, and wherein 5 is one group, as the value of putting of giving of every dish cable length.CPU constantly gives the value of putting to the given length of count value and code-disc and compares when working procedure, when the two is equal, sends a control signal.Other three code-discs are one group, as the offset of every circle cable length, when the CTC counter returns zero, when the CPU response is interrupted, compensating length (code-disc is given) is sent into computing machine carry out the compensation deals of cable length accumulative total.

4. digital the demonstration.CPU interrupts and when not having that external keyboard is dried to give, drives charactron and show current cumulative length not responding.As external keyboard is dried when giving, the CPU execute key is handled subroutine, and display then shows by the function key requirement.

5. the keyboard of specific function is selected: this part is made up of five function buttons, CPU is in carrying out the master routine one-period, to five function buttons difference run-downs, if have when key is dried to give, what function key then differentiates earlier is, forwards then that corresponding subroutine is handled and drive charactron by functional requirement shows its content to.(1) reset key when CPU detects that this key is dried to give, is then adjusted the PC pointer, makes PC point to 0000.And make CPU be in reset mode.This moment, the various data of inner memory storage all remained unchanged.(2) reset key (CLK) when this key is dried when giving, currently remembers that length is eliminated, and the display zero clearing.(3) write key, when this key is dried when giving, the content of current display is stored a certain discrete cell at internal memory, and makes the accumulative total total length add that this value deposits back original storage unit, makes the display zero clearing then.(4) when write key with reset key is dried simultaneously when giving, former all data of depositing all are eliminated, and this moment, display showed that " zero " circulate a week from right to left.(5) during dried the giving of this key of reading key (RL), read the every dish cable length and the corresponding reel number of former meter record successively.(6) the spark point is read (RP), and this key is dried when giving, and will read all the spark point positions and the corresponding sequence number of this dish successively.

6. switching value output: when outside code-disc gives the value of putting when equating with count value, CPU writes data to latch, provides a contact point signal by external drive circuit 74Ls05 and solid-state switch to the user then, and this contact is with closure at this moment.

Claims (3)

1, electrical cable intelligent horizontal metroscope has a shaping pulse phasing circuit, a microcomputer system circuit, digital driver chuck and input interface circuit, a charactron display circuit and one group of function selecting button.It is characterized in that: shaping pulse and phasing circuit adopt the connection that rising edge triggers and negative edge triggers respectively by two monostalbe triggers, and realize rotating shaping pulse and output by two Sheffer stroke gates; Microsystem has a CPU at least, and the CTC of CTC and 6K internal memory microcomputer system is three path settings a count status, receives the forward and reverse operation of cable respectively and the signal of spark point occurs.Digital display circuit connects the address and the data line of microsystem by latch and driver, the switching value output circuit links to each other with data with the address of microsystem by latch, and given circuit adopts AsCLL sign indicating number driver chuck to link to each other with data line with the address of microsystem through 74Ls244.

2, according to the described electrical cable intelligent horizontal metroscope of claim 1, it is characterized in that: given driver chuck can be the matrix keyboard, and the data of cable active length can be set arbitrarily.

3, according to the described electrical cable intelligent horizontal metroscope of claim 1, it is characterized in that: the way of switching value output circuit has 8 the tunnel.

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