CN200997181Y

CN200997181Y - High-frequency AC parameter inspecter

Info

Publication number: CN200997181Y
Application number: CN 200620168786
Authority: CN
Inventors: 韩卫光
Original assignee: Shenyang Institute of Computing Technology of CAS
Current assignee: Shenyang Institute of Computing Technology of CAS
Priority date: 2006-12-31
Filing date: 2006-12-31
Publication date: 2007-12-26
Anticipated expiration: 2016-12-31

Abstract

An HF AC parameter detecting instrument is provided, which is characterized in that: the utility model comprises an embedded processor control circuit, a display (J12) and a keyboard (J6). Taking a single chip computer (U2) as a core, the embedded processor control circuit is connected to the input pin of an address latch encoder (U10) via an address digital port and is connected with the keyboard (J6) via an digital port. The data input/output pins of the single chip computer (U2) are jointed with the display (J12) and the data input/output pins of an Ethernet controller (U4); the Ethernet controller (U4) is connected with a host computer via a communication interface module (J2) for communication; the measured signal is separately connected with the analog quantity input end (AIN1) and the counter input end of the single chip computer (U2) via the signal detection and the comparison circuit.

Description

A kind of high-frequency ac parameter detecting instrument

Technical field

The utility model relates to a kind of detecting instrument, specifically a kind ofly is used to detect the peak value of high-frequency ac voltage and the high-frequency ac parameter detecting instrument of frequency.

Background technology

In some capacitance type sensors, there is a cover high-frequency ac voltage generation circuit, the working condition of this circuit directly influences the precision and the stability of sensor, needs in process of production its to be switched on and detect its peak value and frequency, determines whether it is qualified.At present, this work exists shortcomings such as inefficiency by the artificial interpretation of oscillograph, record.

The utility model content

Accuracy of detection is low in order to overcome in the prior art, operation stability difference and ineffective deficiency, and the purpose of this utility model is to provide a kind of and realizes accurately detecting and transmission detects data automatically high-frequency ac parameter detecting instrument.

For achieving the above object, the technical solution adopted in the utility model is:

The utlity model has flush bonding processor control circuit, display and keyboard, wherein said flush bonding processor control circuit is core with the single-chip microcomputer, it is connected to the input pin of address latch code translator by the address digit port, link to each other with keyboard by digital port, the data I/O pin of single-chip microcomputer is connected to the data I/O pin of display and ethernet controller, and ethernet controller carries out communication by communication interface module and host computer and is connected; Measured signal is connected to the analog quantity input end of single-chip microcomputer and the counter input end of single-chip microcomputer respectively through signal demodulator and comparator circuit.

Described signal demodulator and comparator circuit comprise wave detector, detection totalizer and reshaper, wherein the input end of wave detector is connected to measured signal, output terminal is connected to the analog quantity input end of single-chip microcomputer respectively through the detection totalizer, be connected to the counter input end of single-chip microcomputer through reshaper.

The utility model also has auxiliary keyboard, and it is in parallel with keyboard.

The utlity model has following advantage:

1. be convenient to the teletransmission data.Because the utility model adopts the flush bonding processor technology, has Ethernet interface, the result who records directly can be sent into the database in the host computer;

2. interpretation precision height.Because the utility model adopts the kind of pulse count calculation frequency, the method that adopts the mass data comparative analysis to calculate peak value is tested, and has improved precision;

3. intelligent high.Because the utility model is made up of flush bonding processor and peripheral circuit thereof, cooperation software can input operator person's job number and product serial number, judges automatically whether product is qualified, and has detection, editor and Presentation Function;

4. low in energy consumption, the reliability height.Flush bonding processor of the present utility model and peripheral circuit thereof all adopt cmos device, and be low in energy consumption; On hardware, adopt the multiple filter technology, improved the reliability of equipment operation.

5. easy to operate.Display device of the present utility model can directly be imported and display operation person's job number, product serial number, shows current frequency, crest voltage, contents such as judgement and display quality.

6. cost is low.The utility model is satisfying under the prerequisite of test request, function is simplified, and adopts the method for frequency-change sampling, promptly only gathers the high-frequency signal peak value by the low speed AD converter of single-chip microcomputer U2 inside, avoided the outside extra high-speed A/D converter that increases, reduced cost at single-chip microcomputer U2.

Description of drawings

Fig. 1 is the utility model application system overall construction drawing;

Fig. 2 is the utility model inner structure block diagram;

Fig. 3 is the controller panel layout of a specific embodiment of the utility model;

Fig. 4 is circuit theory diagrams of the present utility model.

Embodiment

As Fig. 2, shown in Figure 4, the utility model comprises the flush bonding processor control circuit, display J12 and keyboard J6, wherein said flush bonding processor control circuit is a core with single-chip microcomputer U2, it is connected to address latch code translator U10 input pin A0～A10 by address digit port P5.0～P5.7, by digital port P2.0～P2.4, pin L0～L4 of P3.0～P3.3 and keyboard J6, H0～H3 links to each other, data I/O pin D7～D0 of single-chip microcomputer U2 is connected to data I/O pin DB7～DB0 of display J12 and data I/O pin D7～D0 of ethernet controller U4, the network interface of the respective pins of ethernet controller U4 and communication interface module J2 drives pin RDP, RDN, TDP and TDN link to each other, and communication interface module J2 carries out communication by ethernet line and host computer and is connected; Measured signal is connected to the analog quantity input end AIN1 of single-chip microcomputer U2 and the counter input end CP0+ of single-chip microcomputer U2 respectively through signal demodulator and comparator circuit.

Described signal demodulator and comparator circuit comprise wave detector U5, detection totalizer U6 and reshaper U7, wherein the input end of wave detector U5 is connected to measured signal through capacitance C4, and output terminal is connected to the analog quantity input end AIN1 of single-chip microcomputer U2, is connected to the counter input end CP0+ of single-chip microcomputer U2 through reshaper U7 through detection totalizer U6 respectively.Also have auxiliary keyboard interface J9, its keyboard J6 with instrument face plate is in parallel, and extendable functions is operated with being convenient to.

The course of work of the present utility model is as follows: measured signal enters high speed rectification circuit based on wave detector U5, detection totalizer U6 through capacitor C 4, after resistance R 29, capacitor C 14 filtering, enter the analog quantity input end AIN1 of single-chip microcomputer U2, the half-wave voltage signal of wave detector U5 output is after reshaper U7 shaping, enter the counter input end CP0+ of single-chip microcomputer U2, the output signal of single-chip microcomputer U2 is delivered to display J12 and ethernet controller U4; Power supply is divided into many groups, is respectively the power supply of single-chip microcomputer U2 and peripheral components; Single-chip microcomputer U2 accepts operational order by the keyboard on the guidance panel, finishes corresponding operational motion, shows test results; Test result is directly sent into database in the host computer (present embodiment employing PC) by ethernet controller U4.

In the present embodiment, flush bonding processor U2 adopts C8051F060, address latch code translator U10 adopts GAL16V8, ethernet controller U4 adopts CP2200, keyboard adopts 4 * 5 push-button arrays, display adopts TM12864 type 128X64 lattice lcd display, can display operation person member job number, product serial number workpiece, frequency, crest voltage, quality state etc.; Wave detector U5 in signal demodulator and the comparator circuit, detection totalizer U6 and reshaper U7 adopt LM318.

The operator can pass through the keyboard input parameter on the instrument panel (as shown in Figure 3), also can pass through an external auxiliary keyboard input parameter, and is easy to operate.

When test frequency, adopt the method for query counts device numerical value in official hour to calculate; When the test peak value, employing begins sampling with single-chip microcomputer U2 highest frequency, widen the way of sampling interval gradually, data are compared one by one, realized only gathering the purpose of high-frequency signal peak value, avoided the outside extra problem that increases high-speed A/D converter and cost is raise at single-chip microcomputer U2 by the low speed AD converter of single-chip microcomputer U2 inside.

The utility model is a kind ofly can detect the peak value of high-frequency ac voltage and the intelligence instrument of frequency automatically, as shown in Figure 1, can be installed in different places respectively uses, be articulated on the ethernet line simultaneously, the utility model can be conveyed into the data that record in different places in the database of host computer on directly by Ethernet, replace artificial interpretation and record, test easy, quick.

Claims

1. high-frequency ac parameter detecting instrument, it is characterized in that: have the flush bonding processor control circuit, display (J12) and keyboard (J6), wherein said flush bonding processor control circuit is a core with single-chip microcomputer (U2), it is connected to the input pin of address latch code translator (U10) by the address digit port, link to each other with keyboard (J6) by digital port, the data I/O pin of single-chip microcomputer (U2) is connected to the data I/O pin of display (J12) and ethernet controller (U4), and ethernet controller (U4) carries out communication by communication interface module (J2) and host computer and is connected; Measured signal is connected to the analog quantity input end (AIN1) of single-chip microcomputer (U2) and the counter input end of single-chip microcomputer (U2) respectively through signal demodulator and comparator circuit.

2. by the described high-frequency ac parameter detecting of claim 1 instrument, it is characterized in that: described signal demodulator and comparator circuit comprise wave detector (U5), detection totalizer (U6) and reshaper (U7), wherein the input end of wave detector (U5) is connected to measured signal, and output terminal is connected to the analog quantity input end (AIN1) of single-chip microcomputer (U2), is connected to the counter input end of single-chip microcomputer (U2) through reshaper (U7) through detection totalizer (U6) respectively.

3 by the described high-frequency ac parameter detecting of claim 1 instrument, and it is characterized in that: also have auxiliary keyboard (J9), it is in parallel with keyboard (J6).