CN2365642Y

CN2365642Y - Electronic instrument for measuring length

Info

Publication number: CN2365642Y
Application number: CN 99204176
Authority: CN
Inventors: 单勤杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-20
Filing date: 1999-03-20
Publication date: 2000-02-23
Anticipated expiration: 2009-03-20

Abstract

The utility model discloses an electronic instrument for measuring length, which is mainly composed of a master controller, a transceiver, and a circuit device thereof. With adopting a microcomputer control circuit by the master controller, a state that whether emitting signals are received or not by a receiver can be controlled; the transceiver comprises an emitter and the receiver, emitting pipes are one-to-one corresponding to receiving pipes and the receiving pipes are all arranged on the emitter and the receiver in tandem arrangement. Under the control of the master controller, the emitting pipes and the receiving pipes operate in turn, complete keyboard scan, preset measuring value, output control signals, display measured result. The utility model realizes exactly, rapidly, automatically, and continuously measurement through button operation. The utility model is suitable for short dimension measurement of various occasions, such as standing long jump, height, etc.

Description

Electronic length measuring instrument

The utility model relates to the mensuration of length amount.It particularly is the measurement of feature with the optical means.

At present, for the kinetic measurement of common short range of size, for example school is to the achievement measure of student's standing long jump, spring altitude touch, perhaps health check-up height is measured, these length amounts generally all adopt tape measure or scale to measure on the spot, though simple and practical, waste time and energy.Utilize infrared ray to receive and pilot lamp displaying principle reflection length amount, the someone did to repay examination, but did not see record, had but opened up new approach for it.

The purpose of this utility model is to propose a kind of electronic length measuring instrument very easily of manipulating.It can utilize push-botton operation to pass through scanning search fast, realizes the automatic mensuration of length value.

Electronic length measuring instrument of the present utility model, mainly be made up of primary controller, transceiver and circuit arrangement thereof, it is characterized in that: a, said circuit arrangement include the control circuit device that the computer processing unit MCU that is provided with in the primary controller, code translator, infrared amplifier constitute; The transmitting circuit that constitutes with single 16 tunnels analogy selector switch/code translators, power amplifier tube, infrared transmitting tube is arranged; The receiving circuit device that constitutes with single 16 tunnels analogy selector switch/code translators, infrared receiving tube is arranged; And, link transfer control signal and joining power with bus between each device by display circuit device and power circuit device that charactron, section decoder driver and position driving tube constitute; B, said transceiver are made of infrared transmitter and infrared remote receiver two parts, and power valve and receiving tube are arranged by file, and corresponding one by one.

The utility model has the advantages that: in the dynamic measurement scope of prediction, after infrared transmitter and infrared remote receiver placed, noted computing by the position of testee's health interception Infrared by primary controller and obtain corresponding length value, and by the display demonstration, main survey personnel are as long as action button just can be finished whole mensuration of achievement.Automatically continuous coverage is accurately, quick.

Be illustrated below in conjunction with embodiment and accompanying drawing thereof.

Fig. 1 is a basic block diagram of the present utility model.

Fig. 2 is a power circuit diagram.

Fig. 3 is the governor circuit figure of primary controller.

Fig. 4 is the circuit diagram of infrared transmitter.

Fig. 5 is the circuit diagram of infrared remote receiver.

Fig. 6 is display circuit figure.

Fig. 7 is the flow chart of embodiment.

Referring to accompanying drawing.

As shown in Figure 1, structure of the present utility model is made of primary controller 1, infrared transmitter 2, infrared remote receiver 3 three parts, links by cable 4 between transceiver and primary controller, is provided with bus in the cable.Also be provided with on the panel of primary controller 1 and comprise display screen 5 and three shift knobs that three charactrons show.These three shift knobs are reset key 8, initiating key 9 and preset key 10.6 expression relay indicating lights, the 7th, power switch.In their casing, circuit arrangement is set.Transceiver in this example is made up of discrete infrared transmitter and infrared remote receiver two parts, infrared transmitting tube and infrared receiving tube are provided with by vertically arranging, and it is corresponding one by one, be provided with in opposite directions during use, middle is that the test section is (when being used to measure height, can be provided with in the same way by reflection, the test section is between reflecting plate and transceiver).The testee is tested in the test section, and when the regulation position of health interception Infrared, its length value that position signalling reflected is picked up survey automatically, handled and the output demonstration by the circuit arrangement in the primary controller.

Shown in Figure 2 is conventional DC-stabilized circuit.It provides direct-current working volts for system.LD wherein ₀As relay indicating light.

Figure 3 shows that the electronic circuit of forming the primary controller circuit arrangement.It comprises computer processing unit, i.e. MCU Z1 (Z86E04), the circuit that code translator Z2 (74LS138) and infrared amplifier Z3 (CX20106A) form.Work successively by primary controller control infrared transmitter and infrared remote receiver, finish keyboard scan, preset measured value, the output control signal, output at last shows.The input end (1 pin) of infrared light received signal input Z3 amplifies the back enters Z1 from output terminal (7 pin) output p32 input end.The XTAL1-2 of Z1 is the union end of crystal oscillator.P00-P02 is through the past display circuit of bus interface.

Fig. 4, Fig. 5 are respectively the circuit structures of infrared transmitter infrared remote receiver and infrared remote receiver.They all adopt six lists, 16 tunnels analogy selector switch/code translators (CC4067L), constitute 96 the tunnel simultaneously and transmit and receive the corresponding survey passage of picking up, and connect with primary controller by bus (cable).The A0 of each piece of U1-U6 in the radiating circuit (10 pin), A1 (11 pin), A2 (14 pin), A3 (13 pin) and common port I0 (1 pin) connect together respectively.Each end of the I0/0-15 of U1-U6 is connected to power amplifier tube (8550) N1-96 respectively.A0-A3 among the U1-U6 is respectively through the P24-P27 of bus interface Z1 end, and I0 end (1 pin) connects the P23 end of Z1, and its six C (15 pin) end connects the Y0-Y5 end of Z2 respectively.LD1-96 is an infrared transmitting tube.R5-105 is a current-limiting resistance; In receiving circuit, then just in time use conversely, be provided with six lists, 16 tunnels analogy selector switch/code translator (CC4067L) U7-U12 equally,, directly connect the photodiode RD1-96 of infrared reception usefulness as each end of I0/0-15 of input end pin correspondence.Its A0 (10 pin), A1 (11 pin), A2 (14 pin), A3 (13 pin) and I0 (1 pin) end connect together respectively.The A0-A3 end connects the P24-P27 end of Z1 respectively, and I0 end (1 pin) connects the signal input part (1 pin) of Z3.Infrared amplifier Z3 is used to amplify the infrared signal of sending here from infrared remote receiver.Therefore the output terminal (7 pin) of Z3 connects the P32 pin of Z1.The state of its output terminal is reflecting that infrared remote receiver has the infrared light that is not received in from the infrared transmitter transmission.The C end of U7-U12 connects the output terminal Y0-Y5 end of Z2 respectively.

Used ten to advance three digit counters in the display circuit of Fig. 6, formed by a section decoder driver U13 (74LS164) and three charactron U14-16 (LED).Be respectively equipped with pushbutton switch S1, S2, S3 on the base lead of three promotion pipe P1-P3 (9815), they are reset key, initiating key, preset key.Reference numeral is specifically by program setting.

Fig. 7 has provided the flow chart of this device MCU.

Sketch the course of work of this device below in conjunction with flow chart: 1, start energized, system initialization is waited for input command, shows zero information this moment; 2, press preset key 10, the key information input is arranged, can preset initial value by certain step pitch, primary controller

Keyboard scan is located waiting status; 3, press initiating key 9 after, system comes into operation, and transceiver is scanned, from first pair of correspondence

Power valve and receiving tube begin, be strobed into the end of scan one by one, make detection, and note

The state of Zlp32 end; 4, to clear interception Infrared is arranged, can carry out computing to scanning result according to sequence number and judge,

Judged result is sent demonstration; 5, continue keyboard scan then, repeat subsequent step and measure next time.Set in an embodiment

Naturally be 4 seconds the interval time of Deng Daiing, then automatically resets, standby.

When operation irregularity appears in the system of running into, can utilize reset key 8, the holding state when making system get back to beginning.In addition, owing to adopt the infrared semiconductor components and parts, general power is less, and the distance between the transmitting-receiving will adapt with machine sensitivity, and avoids strong ambient light interference.This device can be provided with some other functions, for example the long-jump warning function etc. of stepping on the line in violation of rules and regulations.

The measuring accuracy error of present embodiment is ± 5 millimeters.

Claims

1, a kind of electronic length measuring instrument, mainly be made up of primary controller (1), transceiver and circuit arrangement thereof, it is characterized in that: a, said circuit arrangement include the control circuit device that the computer processing unit MCU (Z86E04) that is provided with in the primary controller, code translator (74LS138), infrared amplifier (CX20106A) constitute; The transmitting circuit that constitutes with single 16 tunnels analogy selector switch/code translators (CC4067L), power amplifier tube (S8550), infrared transmitting tube (LD1-96) is arranged; The receiving circuit device that constitutes with single 16 tunnels analogy selector switch/code translators (CC4067L), infrared receiving tube (RD1-96) is arranged; And, link transfer control signal and joining power with bus between each device by display circuit device and power circuit device that charactron (U14-U16), section decoder driver (U13) and position driving tube (P1-P3) constitute; B, said transceiver are made of infrared transmitter (2) and infrared remote receiver (3) two parts, and power valve (LD1-96) and receiving tube (RD1-96) are arranged by file, and corresponding one by one.