CN2364450Y - Pressure data logger for single-chip microcomputer textile plant equipment - Google Patents
Pressure data logger for single-chip microcomputer textile plant equipment Download PDFInfo
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- CN2364450Y CN2364450Y CN 99235575 CN99235575U CN2364450Y CN 2364450 Y CN2364450 Y CN 2364450Y CN 99235575 CN99235575 CN 99235575 CN 99235575 U CN99235575 U CN 99235575U CN 2364450 Y CN2364450 Y CN 2364450Y
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- pressure
- integration member
- chip microcomputer
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Abstract
The utility model relates to a pressure data logger for SCM textile plant equipment, which is composed of a panel and a circuit board that are fixed in a casing. A display screen, indication lamps and buttons are arranged on the panel and connected with the circuit board through signal wires. A pressure sensor, a reference power supply, an analog amplifying circuit, a multiplexer, an active filter circuit and an A/D converter are arranged in the circuit part of the pressure data logger and are mutually in electric connection through signal wires. The A/D converter and a nixie tube/the indication lamp are respectively in electric connection with an SCM through a buffer and a serial display driver respectively. The SCM is in electric connection with a serial real-time clock, a monitoring E< 2 >PROM, an operating circuit and print/communication interfaces through signal wires. The pressure data logger has the advantages of simple structure, convenient operation, stable and accurate operation, reliability, high automatic detection and monitoring precision.
Description
The utility model is a kind of single chip microcomputer textile machine equipment pressure scan tester, belongs to the automatic detection instrument field of instrumentation technology, specially refers to the instrument and meter that textile machine equipment pressure parameter detects automatically.
The pressure parameter of textile machine equipment comprises Weaving device, needs each point vapour pressure, oil pressure and the hydraulic pressure measured in the operational processs such as dyeing apparatus, refrigeration unit, air compressor.Because all kinds of vapour pressures, oil pressure, hydraulic pressure parameters such as the Weaving device in the operational process, dyeing apparatus, refrigeration unit, air compressor are correctly reflecting their running status, so have only the pressure of measuring each point exactly, the normal operation of ability assurance equipment, unit.Yet the existing various device for pressure measurement of textile industry generally all adopt on-the-spot setting pressure table or short distance kapillary transmission pressure table, and are mounted in basically near the pressure scene that will measure, are regularly detected the pressure parameter of each point by the operator on duty.Like this, not only operator on duty's labour intensity is big, and is difficult to observe at any time the variation of each point pressure parameter in its operational process, is difficult to prevent the generation of burst accident.
The purpose of this utility model is exactly in order to overcome and solve on-the-spot installation of pressure-measuring instrument employing of existing textile machine equipment, by operator on duty's time sight, cause operator on duty's labour intensity big, and can't observe the each point pressure parameter at any time changes, be difficult to prevent the shortcoming and the problems such as generation of burst accident, Development and design is a kind of intelligent, can import the multichannel pressure parameter, and can be transferred to the pulpit to pressure parameter at a distance, the automatic accurate measurement Weaving device of energy, dyeing apparatus, refrigeration unit, each point pressure in the operational processs such as air compressor, can alleviate operator on duty's labour intensity, carry out the single chip microcomputer textile machine equipment pressure scan tester of monitoring automatically.
The utility model is realized by following organization plan: the contour structures synoptic diagram of this detector as shown in Figure 1, it is connected and composed jointly by casing, panel, circuit board, wherein: have pressure detection channel screen 1, pressure display screen 2, touring pilot lamp 3, tutorial light 4, time set pilot lamp 5, upper limit alarm pilot lamp 6, lower limit alarm lamp 7, operation/setting switching push button 8, touring/fix a point switching push button 9, increment size button 10, decrement value/print button 11 on the panel; The circuit block diagram of this detector as shown in Figure 2, its circuit is by pressure transducer 12, analog amplify circuit 13, traffic pilot 14, active filter circuit 15, A/D converter 16, input buffer 17, one chip microcomputer 18, serial display driver 19, charactron/pilot lamp 20, serial real-time clock 21, monitoring E
2PROM22, function circuit 23, printing/communication interface 24, reference power supply 25 is electrically connected formation jointly, wherein: pressure transducer 12, analog amplify circuit 13, traffic pilot 14, active filter circuit 15, A/D converter 16, input buffer 17, one chip microcomputer 18, reference power supply 25 is electrically connected jointly and constitutes the direct measurement mechanism of textile machine equipment pressure parameter, its key is that it is furnished with in the testing process automatically data list printing or the long-distance transmissions printing/communication interface 24 to host computer, its interconnected relationship is: panel and circuit board are fixed on the support of casing, the pressure detection channel screen 1 of panel, pressure display screen 2, the touring pilot lamp 3 that detects, tutorial light 4, time set pilot lamp 5, upper limit alarm pilot lamp 6, lower limit alarm lamp 7 grades are by the corresponding connection with circuit board of signal transmssion line separately; Pressure transducer 12 is electrically connected with analog amplify circuit 13 mutually by the pressure sensor signal transmission line, and be electrically connected mutually with reference power supply 25 by power lead, analog amplify circuit 13 is electrically connected with the multipath conversion and the pass of traffic pilot 14 mutually by simulation amplifying signal transmission line, the output terminal of traffic pilot 14 is electrically connected with active filter circuit 15 mutually by the multipath conversion signal transmssion line, active filter circuit 15 is electrically connected with A/D converter 16 mutually by the filtering signal transmission line, A/D converter 16 is electrically connected with one chip microcomputer 18 mutually by input buffer 17, charactron/pilot lamp 20 is electrically connected with one chip microcomputer 18 mutually by serial display driver 19, serial real-time clock 21, monitoring E
2PROM22, function circuit 23, printing/communication interface 24 are electrically connected with one chip microcomputer 18 mutually by signal transmssion line separately respectively.Its principle of work is: this detector adopts computer programming, by operation/setting switching push button 8 and tutorial light 4 selection operations or set condition, tutorial light 4 is bright to be mode of operation, tutorial light 4 goes out and is set condition, detector is under set condition, by digital display screen 1,2, pilot lamp 3～7 and button 8～11, the upper limit of each passage and lower limit alarming value, real-time clock, touring sense channel initial point value and end point values, timed print time are input to one chip microcomputer 18, and one chip microcomputer 18 is kept at above data and monitors E
2PROM22, real-time clock deposit serial real-time clock 21 in and are started, and data are not lost when having a power failure and real-time clock operation continuously by reserve battery E power supply when having a power failure.Detector is under mode of operation, the pressure transducer of each passage changes on-the-spot pressure parameter into electrical quantity, this electrical quantity through signal transmssion line be input to each passage independently analog amplify circuit carry out linear amplification, select and carry out low-pass filtering through the multicircuit switch of traffic pilot then by active filter circuit, carry out mould/number conversion through A/D converter again, transformation result is input to one chip microcomputer through input buffer, and channel value and the force value of single chip microcomputer after calculation process drives charactron/indicator light circuit through serial display driver and carry out digit translation and show.In above-mentioned testing process, single chip microcomputer is by being kept at monitoring E
2Initial point value in the PROM and end point values are determined touring sense channel scope, and the testing result of every passage is monitored E with being kept at
2Each passage upper limit and lower limit alarming value in the PROM compare, and promptly drive upper limit pilot lamp 6 greater than the upper limit alarm value and report to the police, and drive lower limit pilot lamp 7 less than the lower limit alarming value and report to the police; Single chip microcomputer is constantly imported data from serial real-time clock 21, and with the monitoring E
2The timed print time in the PROM compares, by printings/communication interface can be automatically depositing in the tabulate printing or be transferred to host computer of channel value in the single chip microcomputer memory and corresponding pressure data so that data gather and carry out remote monitor.
The basic circuit schematic diagram of this detector as shown in Figure 3.This detector can have a plurality of pressure detection input channels, the present embodiment design has 8 tunnel pressure detection input channels, the pressure transducer of every passage, reference power supply and analog amplify circuit are all identical and independent separately, Fig. 3 only drawn pressure transducer, reference power supply and the analog amplify circuit of two passages.Pressure transducer 12 in its circuit comprises No. 8 input pickups, 1. it be respectively～and the 8. pressure transducer of pressure detection input channel, analog amplify circuit 13, reference power supply 25 are by calculation amplifier integration member U far away
11～U
34, resistance R
1～R
90Potentiometer W
1～W
24Be electrically connected formation jointly, 1. the analog amplify circuit of passage by calculation amplifier integration member U far away
11～U
12, resistance R
1～R
8, potentiometer W
1～W
2Common parallel-series connects and composes, the 1. the reference power supply of passage by calculation amplifier integration member U far away
13, resistance R
9～R
10, potentiometer W
3Parallel-series connects and composes, and so analogizes; 8. the analog amplify circuit of passage by calculation amplifier integration member U far away
32～U
33, resistance R
81～R
88, potentiometer W
22～W
33Common parallel-series connects and composes, the 8. the reference power supply of passage by calculation amplifier integration member U far away
34, resistance R
89～R
90, potentiometer W
24Parallel-series connects and composes; Traffic pilot 14 is by electronics analog to digital conversion integration member U
10Constitute; Active filter circuit 15 is by calculation amplifier integration member U far away
35, resistance R
91～R
94, capacitor C
1～C
2Common parallel-series connects and composes; A/D converter 16 is by A/D converter integration member U
3, constant voltage circuit integration member U
4, frequency division calculates integration member U
5, resistance R
95, capacitor C
3～C
5, potentiometer W
25Common parallel-series connects and composes; Input buffer 17 is by impact damper integration member U
6Constitute; One chip microcomputer 18 is by CPU integration member U
1Constitute; Serial display driver 19 is by serial display driver integration member U
2Constitute; Charactron/pilot lamp 20 is by charactron G
1～G
6, pilot lamp D
1～D
5Common parallel-series connects and composes; Serial real-time clock 21 is by serial real-time clock integration member U
9, crystal oscillator XTAL, reserve battery E connect and compose jointly; Monitoring E
2PROM22 is by monitoring E able to programme
2PROM integration member U
7Constitute; Function circuit 23 is by resistance R
95～R
99, button T
1～T
4Connect and compose jointly; Printing/communication interface 24 is by serial communication interface integration member U
8Constitute.The circuit working principle is: the after 1.～8. the pressure transducer of passage becomes electrical quantity to on-the-spot pressure parameter, by each passage independently analog amplify circuit amplify, then via U
10Constitute traffic pilot and select, through U
35The active filter circuit that constitutes carries out low-pass filtering, and is transported to U
3～U
5After the A/D converter that constitutes carries out mould/number conversion, through U
6The input buffer that constitutes is transported to single chip microcomputer, carries out data processing by CPU according to the channel value and the force value of input, and data are after treatment passed through U
2The serial display driver that constitutes drives charactron and shows.In above-mentioned testing process, reference power supply 25 provides independent 8 groups of reference power supplies to supply with 8 road input pressure sensors, by U
7The monitoring E that constitutes
2PROM is used to preserve the initial point value and the end point values of touring sense channel, and every channel pressure upper limit and lower limit alarm setting value, timed print time are by U
8Printing/the communication interface that constitutes can be automatically depositing in single chip microcomputer U
1The pressure data of memory and respective channel value are tabulated to print or be transferred to host computer and are carried out remote monitor, by U
9The serial real-time clock that constitutes provides continual continuous real-time clock, the operation of function circuit 23 control detection instrument, setting, touring, fixed point, print state.
The utility model is compared following advantage and beneficial effect with existing textile machine equipment pressure detecting instrument: (1) is because this detector is the intelligent instrument of controlled by single chip microprocessor, can the each point pressure parameter of different ranges such as the Weaving device in the operational process, dyeing apparatus, refrigeration unit, air compressor automatically be detected, the upper limit of every passage and lower limit alarm setting value are stored in monitoring E
2In the PROM, can compare with it, send alerting signal; And be furnished with printing/communication interface, can be by being kept at monitoring E
2The timed print time in the PROM tabulates testing result to print or be transferred to host computer automatically and carries out remote monitor; (2) this detector has multi-channel detection, and the pressure transducer of each passage all adopts identical and independently analog amplify circuit and reference power circuit, adopted the electronic analog swtich of multipath conversion simultaneously, detector can be moved for a long time continuously, accurately the each point pressure parameter of measure field; (3) because this detector has adopted serial real-time clock, serial monitoring E
2Circuit such as PROM, serial display driver, have simple in structure, working stability, real-time clock and data parameters have a power failure do not lose, testing result accurately, reliably, do not need special maintaining; (4) the automatic detection level height of this detector, easy to operate, can alleviate operator on duty's labour intensity greatly, can monitor the running status of on-the-spot each plant equipment of weaving automatically.
Below Figure of description is further specified as follows: Fig. 1 is the contour structures synoptic diagram of single chip microcomputer textile machine equipment pressure scan tester, Fig. 2 is the circuit block diagram of single chip microcomputer textile machine equipment pressure scan tester, and Fig. 3 is the basic circuit schematic diagram of single chip microcomputer textile machine equipment pressure scan tester.Among each figure: 1 is the pressure detection channel screen, and 2 is the pressure display screen, and 3 are the touring pilot lamp that detects, and 4 is tutorial light, and 5 is the time set pilot lamp, and 6 is the upper limit alarm pilot lamp, and 7 is the lower limit alarm lamp, and 8 are operation/setting switching push button T
1, 9 are touring/fixed point switching push button T
2, 10 is increment size button T
3, 11 is decrement value/print button T
4, W
1～W
24For full scale regulator potentiometer, zero potentiometer and the reference power supply amplitude regulator potentiometer of channel pressure sensor, as W
1, W
221. be respectively, the 8. full scale regulator potentiometer of passage, W
2, W
231. be respectively, the 8. zero potentiometer of passage, W
3, W
241. be respectively, the 8. reference power supply output amplitude regulator potentiometer of passage; CYG is a pressure transducer, CZ
1, CZ
2For printing communication interface.
Embodiment of the present utility model can be as follows: (1) processes casing and panel with general machine-tooled method, the inventor is once by design shown in Figure 1, the casing that processes model machine and panel, its casing size can be: 160 * 80 * 250mm, panel size is 160 * 80mm.And then by shown in Figure 1, arrangement, processing, setting pressure sense channel display screen, pressure display screen, the touring pilot lamp D that detects
1, tutorial light D
2, time set pilot lamp D
3, upper limit alarm pilot lamp D
4, lower limit alarm lamp D
5, operation/setting switching push button T
1, touring/fixed point switching push button T
2, increment size button T
3, decrement value/print button T
4Deng; (2) by draw PCB shown in Figure 3, and by screening electric elements shown in Figure 3, wherein integration member U
1Can select MCS-51 type single chip microcomputer for use, U
2Can select MAX 7219 serial display drivers for use, U
3Can select ICL7135 type A/D converter for use, U
4Can select MC1403 type constant voltage circuit integration member for use, U
5Can select 74LS92 frequency division counter integration member for use, U
6Can select 74LS244 impact damper integration member for use, U
7Can select X25045 monitoring able to programme E for use
2PROM, U
8Can select MAX233 serial line interface integration member for use, U
9Can select DS1302 serial real-time clock integration member for use, U
10Can select 4051 type electronic analogue-to-digital converters for use, U
11～U
35Can select OP07 type operational amplifier for use; (3) by shown in Figure 3, install circuit board, and be fixed in the casing, and be electrically connected with the display screen on lead and the panel, pilot lamp, button etc.Then, through energising and simple debugging, just can implement the utility model preferably.The inventor can work under 0～50 ℃ environment temperature by the model machine that above-mentioned embodiment is made, the pressure transducer input channel is 8 passages, pressure measurement range is 0～20MPa, and detector resolution is 0.001MPa, and measuring error is last 1 bit digital≤± 5.
When implement using this detector, should be electrically connected on-the-spot pressure transducer and this detector by shown in Figure 3 in advance, and be input to the pressure transducer number of this detector, in this detector set condition, by button T according to the scene
1～T
4Operation and pilot lamp D
1～D
5, charactron G
1～G
6Demonstration, pressure channel initial point value and end point values are input to single chip microcomputer, and be stored in the monitoring E
2In the PROM.Simultaneously, also can be input to single chip microcomputer to every passage upper limit and lower limit alarming value, timed print time, real-time clock etc., single chip microcomputer is stored in monitoring E
2With startup serial real-time clock, data are not lost when having a power failure in the PROM.Its job step is: (1) power-on, this instrument is according to monitoring E
2Go the rounds to detect in interior set initial point value of PROM and the end point values scope, touring pilot lamp is bright, tutorial light is bright, the pressure detection channel screen demonstrates the input channel numeral of pressure transducer, and the pressure display screen demonstrates the measured force value of this input channel, and compares with this passage upper limit and the lower limit alarm setting value set, if greater than the upper limit alarm setting value, the upper limit alarm pilot lamp is bright, if less than the lower limit alarm setting value, the lower limit alarm lamp is bright; (2) push touring/fixed point switching push button T
2, touring pilot lamp extinguishes, and instrument just fixes a point to detect monitoring E
2The input channel of set initial point value in the PROM, the sense channel display screen demonstrates this initial point value, and the pressure display screen demonstrates the force value of the input channel of corresponding initial point value; If need the force value of next passage of fixed point detection, as long as push increment size button T
3Can realize; (3) push touring/fixed point switching push button T again
2, touring detection pilot lamp is bright, and detector goes the rounds again to detect again; (4) when needs remodify setting value, as long as pressing operation/setting switching push button T
1, tutorial light extinguishes, and can import new setting value, and after input finished, behind pressing operation/setting switching push button, tutorial light was bright, and instrument is returned to mode of operation again.In testing process, when instrument runs to and be stored in monitoring E
2The timed print time in the PROM is when consistent, and single chip microcomputer is automatically being worth port number in the scope and corresponding force value to terminal by the printing of tabulating of printing/communication interface by the initial point value, or delivers to host computer and carry out that data gather or remote monitor; If push decrement value/print button 11 at any time, also can finish once above printing.
Claims (2)
1, a kind of single chip microcomputer textile machine equipment pressure scan tester, it is characterized in that: it is connected and composed jointly by casing, panel, circuit board, wherein has pressure detection channel screen (1), pressure display screen (2), touring pilot lamp (3), tutorial light (4), time set pilot lamp (5), upper limit alarm pilot lamp (6), lower limit alarm lamp (7), operation/setting switching push button (8), touring/fix a point switching push button (9), increment size button (10), the decrement value/print button (11) of detecting on the panel; Its circuit is by pressure transducer (12), analog amplify circuit (13), traffic pilot (14), active filter circuit (15), A/D converter (16), input buffer (17), one chip microcomputer (18), serial display driver (19), charactron/pilot lamp (20), serial real-time clock 21, monitoring E
2PROM (22), function circuit (23), printing/communication interface (24), reference power supply (25) is electrically connected the direct measurement mechanism of pressure parameter that constitutes textile machine equipment jointly, its key is that it is furnished with in the testing process automatically data list printing or the long-distance transmissions printing communication interface (24) to host computer, its interconnected relationship is: panel and circuit board are fixed on the chassis bracket, the pressure detection channel screen (1) on the panel, pressure display screen (2), the touring pilot lamp (3) that detects, tutorial light (4), time set pilot lamp (5), upper limit alarm pilot lamp (6), lower limit alarm lamp (7) is by the corresponding connection with circuit board of signal transmssion line separately; Pressure transducer (12) is electrically connected with analog amplify circuit (13) mutually by the pressure sensor signal transmission line, and be electrically connected mutually with reference power supply (25) by power lead, analog amplify circuit (13) closes with the multichannel turn-off of traffic pilot (14) by the amplifying signal transmission line and is electrically connected mutually, the output terminal of traffic pilot (14) is electrically connected with active filter circuit (15) mutually by the multipath conversion signal transmssion line, active filter circuit (15) be electrically connected mutually by filtering signal transmission line and A/D converter (16), A/D converter (16) is electrically connected with one chip microcomputer (18) mutually by input buffer (17), charactron/pilot lamp (20) is electrically connected with one chip microcomputer (18) mutually by serial driver (19), serial real-time clock (21), monitoring E
2PROM (22), function circuit (23), printing/communication interface (24) are electrically connected with one chip microcomputer (18) mutually by signal transmssion line separately respectively.
2, by the described single chip microcomputer textile machine of claim 1 equipment pressure scan tester, it is characterized in that described circuit can have a plurality of pressure detection input channels, in its circuit, pressure transducer (12) comprises 8 road input pressure sensors, 1. it be respectively～the 8. pressure transducer of pressure detection input channel, and analog amplify circuit (13), reference power supply (25) are by operational amplifier integration member U
11～U
24, resistance R
1～R
90, potentiometer W
1～W
24Be electrically connected formation jointly, 1. the analog amplify circuit of passage by operational amplifier integration member U
11～U
12, resistance R
1～R
2, potentiometer W
1～W
2Common parallel-series connects and composes, the 1. the reference power supply of passage by operational amplifier integration member U
13, resistance R
9～R
10, potentiometer W
3Parallel-series connects and composes, 8. the analog amplify circuit of passage by operational amplifier integration member U
32～U
33, resistance R
81～R
88, potentiometer W
22～W
23Common parallel-series connects and composes, the 8. the reference power supply of passage by operational amplifier integration member U
34, resistance R
89～R
90, potentiometer W
24Parallel-series connects and composes; Traffic pilot (14) is by electronics analog to digital conversion integration member U
10Constitute; Active filter circuit (15) is by operational amplifier integration member U
35, resistance R
91～R
94, capacitor C
1～C
2Common parallel-series connects and composes; A/D converter (16) is by A/D converter integration member U
3, constant voltage integration member U
4, frequency counter integration member U
5, resistance R
95, capacitor C
3～C
5, potentiometer W
25Common parallel-series connects and composes; Input buffer (17) is by impact damper integration member U
6Constitute; One chip microcomputer (18) is by CPU integration member U
1Constitute: serial display driver (19) is by serial display driver integration member U
2Constitute; Charactron/pilot lamp (20) is by charactron G
1～G
6, pilot lamp D
1～D
5Connect and compose jointly; Serial real-time clock (21) is by serial real-time clock integration member U
9, crystal oscillator XTAL, reserve battery E connect and compose jointly; Monitoring E
2PROM (22) is by monitoring E able to programme
2PROM integration member U
7Constitute; Function circuit (23) is by resistance R
95～R
99, button T
1～T
4Connect and compose jointly; Printing/communication interface (24) is by serial communication integration member U
8Constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235575 CN2364450Y (en) | 1999-03-18 | 1999-03-18 | Pressure data logger for single-chip microcomputer textile plant equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235575 CN2364450Y (en) | 1999-03-18 | 1999-03-18 | Pressure data logger for single-chip microcomputer textile plant equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2364450Y true CN2364450Y (en) | 2000-02-16 |
Family
ID=34023518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99235575 Expired - Fee Related CN2364450Y (en) | 1999-03-18 | 1999-03-18 | Pressure data logger for single-chip microcomputer textile plant equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2364450Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127154B (en) * | 2007-09-01 | 2011-11-30 | 福建顺昌虹润精密仪器有限公司 | Scan test display method and device |
| CN104764468A (en) * | 2014-01-08 | 2015-07-08 | 因文西斯系统公司 | Slew rate detection circuit |
| CN106647446A (en) * | 2016-10-28 | 2017-05-10 | 江苏金米智能科技有限责任公司 | Intelligent monitoring system for community environment |
| CN109030927A (en) * | 2018-06-28 | 2018-12-18 | 常州机电职业技术学院 | A kind of plurality of voltages routing inspection circuit |
-
1999
- 1999-03-18 CN CN 99235575 patent/CN2364450Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127154B (en) * | 2007-09-01 | 2011-11-30 | 福建顺昌虹润精密仪器有限公司 | Scan test display method and device |
| CN104764468A (en) * | 2014-01-08 | 2015-07-08 | 因文西斯系统公司 | Slew rate detection circuit |
| CN104764468B (en) * | 2014-01-08 | 2018-10-26 | 因文西斯系统公司 | Conversion rate detection circuit |
| CN106647446A (en) * | 2016-10-28 | 2017-05-10 | 江苏金米智能科技有限责任公司 | Intelligent monitoring system for community environment |
| CN109030927A (en) * | 2018-06-28 | 2018-12-18 | 常州机电职业技术学院 | A kind of plurality of voltages routing inspection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |