CN2230450Y

CN2230450Y - Numerically-controlled detecting device

Info

Publication number: CN2230450Y
Application number: CN 95244477
Authority: CN
Inventors: 朱进先; 龚瑞良; 洪玮
Original assignee: 朱进先
Priority date: 1995-08-04
Filing date: 1995-08-04
Publication date: 1996-07-03
Anticipated expiration: 2005-08-04

Abstract

The utility model relates to a numerically-controlled detecting device which comprises a pulse sending unit (1), a pulse counting unit (2), and a numerically-controlled analog switch unit (3). The pulse sending unit (1), the pulse counting unit (2), and the numerically-controlled analog switch unit (3) are connected with a selective performing unit (5) in order by electric circuits to form a controlling link which controls the conduction of a detection signal sampling unit (7) and an electric meter (6), and the measured point is synchronously indicated by a detection point light symbol unit (4). The utility model has the advantages of selective measurements to a plurality of detection points and convenient and flexible detection.

Description

The digital control type detecting device

The utility model relates to a kind of improvement of electrical circuit, particularly the multisignal source parameter is selected the instrument measured.

At present switchboard and automatic monitoring device are when selecting to measure to multiple signal source such as parameters such as voltage, electric current, employing is stirred waver and is made the ammeter indication, in the use of reality, have that signal wire is many, waver length makes panel be difficult to arrange and the easy problem such as inefficacy of waver.

The purpose of this utility model is to provide selector button of a kind of usefulness to count the digital control type detecting device that a tree name is measured to the dozens of monitoring point.

The utility model purpose is achieved in that the step-by-step counting unit is to counting from the pulse of pulse transmission unit, and to numerical control analog switch unit output binary number, this number is changing the output state of numerical control analog switch unit, select performance element under the driving of numerical control analog switch unit, the circuit of corresponding connection signal sampling unit and ammeter, make ammeter that indication be arranged, simultaneously, the corresponding measured point that shows of the pilot lamp of check point light tag unit.

The utility model is owing to changed the conventional method of selecting signal measurement point with the waver form, can not be subjected to the restriction of former waver structure and panel arrangement, and can solve the not enough and problem that lost efficacy of the easy oxidation in waver contact and physical strength, also but the root a tree name need accomplish that remote control picks up survey, to detecting high-voltage signal its security is arranged more especially.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the utility model basic structure block diagram.

Fig. 2 is an electrical schematic diagram of the present utility model.

Describe the details and the working condition of the concrete detecting device that the utility model proposes according to a tree name in detail below in conjunction with Fig. 1, Fig. 2.

Step-by-step counting unit (2) carries out the increment counting to the pulse signal from pulse transmission unit (1), and by the IC2 external address input end A of IC1 to numerical control analog switch unit (3), B, C, D exports binary number, this number communicates corresponding the end with 16 IN/OUT of IC2 of the public output OUT/IN of the IC2 that is added with high level " 1 ", thereby changing the driving condition of analog switch IC3A～IC3P successively, JO～J15 relay of selecting performance element (5) is under the driving of numerical control analog switch unit (4), sampled signal SE1～the SE15 of corresponding connection signal sampling unit (7) and the circuit of ammeter (6), make ammeter that indication be arranged, simultaneously, the drive signal correspondence of check point light tag unit (4) root a tree name numerical control analog switch unit (3) is lighted LEDO～LED16, step-by-step counting unit (1) constitutes oscillatory circuit by ICO etc., and oscillating impulse is exported to step-by-step counting unit (2) by selecting to measure button AN1.Mu balanced circuit (8) provides the utility model direct-current working volts.

Claims

1. digital control type detecting device, comprise the selection performance element (5) of putting detection signal sampling unit (7) and ammeter (6) channel status, it is held to levy and is pulse transmission unit (1), step-by-step counting unit (2) and numerical control analog switch unit (3) in addition, connect with selecting performance element (5) and check point light tag unit (4) circuit successively, constitute and detect the numerical control link.