CN103148885B - Portable tester - Google Patents
Portable tester Download PDFInfo
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- CN103148885B CN103148885B CN201310087303.7A CN201310087303A CN103148885B CN 103148885 B CN103148885 B CN 103148885B CN 201310087303 A CN201310087303 A CN 201310087303A CN 103148885 B CN103148885 B CN 103148885B
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 29
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 24
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 102100023941 G-protein-signaling modulator 2 Human genes 0.000 description 46
- 101000904754 Homo sapiens G-protein-signaling modulator 2 Proteins 0.000 description 46
- 238000005259 measurement Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
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- Measurement Of Current Or Voltage (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The invention discloses a kind of portable tester, comprise housing, the bottom of housing is provided with membrane keyboard, is provided with liquid crystal display display window on the top of housing, the inside of housing is provided with circuit board assemblies, liquid crystal display and battery, the bottom of housing is provided with small-sized USB interface.Circuit board assemblies inputs finishing circuit, digital signal processing circuit, data display circuit and power supply voltage stabilizing observation circuit by signal and forms.Signal input finishing circuit, digital signal processing circuit, data display circuit connect successively, and power supply voltage stabilizing observation circuit is respectively signal input finishing circuit, digital signal processing circuit and data display circuit and powers.Measuring accuracy of the present invention is high, and antijamming capability is strong, and volume is little, energy consumption is low, is easy to carry, long operational time.
Description
Technical field
The invention belongs to a kind of pick-up unit, being specifically related to a kind of portable tester for detecting rotating machinery rotating speed and power consumption parameter.
Background technology
There is the problems such as precision is low, volume is large, energy consumption is high, housing does not have anti-interference function and signal access terminal easily comes off in the pick-up unit of the equipment operational factor of prior art.
Summary of the invention
The present invention proposes to overcome the shortcoming existed in prior art, its objective is and provides a kind of portable tester for detecting rotating machinery rotating speed and power consumption parameter.
Technical scheme of the present invention is: a kind of portable tester, comprise housing, the bottom of housing is provided with membrane keyboard, be provided with liquid crystal display display window on the top of housing, the inside of housing be provided with circuit board assemblies, liquid crystal display and battery, be provided with in the bottom of housing battery charging hole and signal access terminal share USB interface.
Described circuit board assemblies inputs finishing circuit, digital signal processing circuit, data display circuit and power supply voltage stabilizing observation circuit by signal and forms, wherein, signal input finishing circuit, digital signal processing circuit, data display circuit connect successively, and power supply voltage stabilizing observation circuit is respectively signal input finishing circuit, digital signal processing circuit and data display circuit and powers.
Described signal input finishing circuit comprises filtering circuit and amplification and rectification circuit.
Described digital signal processing circuit comprises single-chip microcomputer and complex programmable logic element.
Described data display circuit comprises single-chip microcomputer and liquid crystal display.
Described power supply voltage stabilizing observation circuit comprises mu balanced circuit and electric source monitoring circuit.
A kind of portable surveying instrument provided by the present invention, measuring accuracy is high, at the specialized equipment slow-speed of revolution (5s
-1) still can Measurement accuracy in situation, tachometric survey precision can reach ± 0.1Hz, and measurement of power loss precision can reach ± 0.1W; Antijamming capability is strong, and the acting in conjunction of metal shell and software filtering effectively can suppress interference, and making under the site environment of serious interference also can Measurement accuracy parameter; Volume is little, and the present invention only has a mobile phone size; Energy consumption is low, can run without interruption continuously and reach more than 12 hours.
Accompanying drawing explanation
Fig. 1 is the outward appearance front view of portable tester of the present invention;
Fig. 2 is circuit board assemblies block diagram of the present invention;
Fig. 3 is signal of the present invention input finishing circuit figure;
Fig. 4 is digital signal processing circuit figure of the present invention;
Fig. 5 is data display circuit figure of the present invention;
Fig. 6 is power supply voltage stabilizing observation circuit figure of the present invention.
Wherein:
1 housing 2 keyboard
3 liquid crystal display display window 4USB interfaces
5 signal input finishing circuit 6 digital signal processing circuits
7 data display circuit 8 power supply voltage stabilizing observation circuits
9 filtering circuit 10 amplification and rectification circuits
11 amplifying signal chip 12 wave shaping chips
13 single-chip microcomputer 14 complex programmable logic elements
15 mu balanced circuit 16 electric source monitoring circuits
17 voltage stabilizing chip 18 liquid crystal displays.
Embodiment
Below, in conjunction with the accompanying drawings and embodiments portable tester of the present invention is described in detail:
As shown in Figure 1, a kind of portable tester, comprise housing 1, the bottom of housing 1 is provided with membrane keyboard 2, be provided with liquid crystal display display window 3 on the top of housing 1, the inside of housing 1 is provided with circuit board assemblies, liquid crystal display 18 and battery, be provided with battery charging hole and the small-sized USB interface 4 that shares of signal access terminal in the bottom of housing 1, its middle shell 1 is metal shell.
As shown in Figure 2, circuit board assemblies inputs finishing circuit 5, digital signal processing circuit 6, data display circuit 7 and power supply voltage stabilizing observation circuit 8 by signal and forms, wherein, signal input finishing circuit 5, digital signal processing circuit 6, data display circuit 7 connect successively, and power supply voltage stabilizing observation circuit 8 is respectively signal input finishing circuit 5, digital signal processing circuit 6 and data display circuit 7 and powers.
As shown in Figure 3, signal input finishing circuit 5 comprises filtering circuit 9 and amplification and rectification circuit 10, wherein, filtering circuit 9 comprises resistance R87, electric capacity C33, and amplification and rectification circuit 10 comprises amplifying signal chip 11 and wave shaping chip 12 and resistance R13, R15, R18, R75, R76, R77, R85, R86 and electric capacity C7.
The annexation of each element is: signal input terminal is connected with 5 pins of amplifying signal chip 11 by resistance R87, 4 pin ground connection of amplifying signal chip 11, 6 pins of amplifying signal chip 11 are by resistance R86 ground connection, 7 pins are connect by resistance R85, 7 pins of amplifying signal chip 11 connect 3 pins of amplifying signal chip 11, 2 pins of amplifying signal chip 11 are by resistance R76 ground connection, 1 pin of amplifying signal chip 11 is also connect by resistance R77, 1 pin of amplifying signal chip 11 passes through 3 pins of resistance R18 welding wave shaping chip 12, 2 pins of wave shaping chip 12 are by resistance R15 ground connection, also by 1 pin of resistance R75 welding wave shaping chip 12, 4 pin ground connection of wave shaping chip 12, 8 pins of wave shaping chip 12 are by electric capacity C7 ground connection, connect power supply simultaneously, also connect its 1 pin by resistance R13, 1 pin connects PLUS port.
Wherein, amplifying signal chip 11 selects AD822 cake core, and wave shaping chip 12 selects LM393 cake core.
As shown in Figure 4, digital signal processing circuit 6 comprises single-chip microcomputer 13 and complex programmable logic element 14(and is called for short CPLD14, commercially available), wherein, 37 pins of single-chip microcomputer 13 connect power supply, 38 pin ground connection, 56 pins are connected with 20 pins of CPLD14, and 57 pins are connected with 19 pins of CPLD14,54 pins are connected with 10 pins of CPLD14,59 pins are connected with 8 pins of CPLD14, the 4 pin ground connection of CPLD14, and 9 pins connect power supply, 2 pins meet FRE, and 3 pins meet POWER.
Wherein, C8051f040 type selected by single-chip microcomputer 13.
As shown in Figure 5, data display circuit 7 comprises single-chip microcomputer 13 and liquid crystal display 18, and wherein, 81 ~ 87 pins of single-chip microcomputer 13 are connected with 4 ~ 11 pins of liquid crystal display 18 respectively.98,97,94,95,96 pins of single-chip microcomputer 13 are connected with 12,13,15,16,17 pins of liquid crystal display 18 respectively.19 pins and 1 pin of liquid crystal display 18 connect power supply, 20 pins of liquid crystal display 18 and 2 pin ground connection.18 pins of liquid crystal display 18 are connect by resistance and 3 pins.
Wherein, liquid crystal display 18 selects LCM12864M type.
As shown in Figure 6, power supply voltage stabilizing observation circuit 8 comprises mu balanced circuit 15 and electric source monitoring circuit 16.Mu balanced circuit 15 comprises voltage stabilizing chip 17 and electric capacity C18, C19, C21.Electric source monitoring circuit 16 comprises battery and single-chip microcomputer 13 and electric capacity C17, C20.Concrete connection is as follows, 16 pins of single-chip microcomputer 13 are by electric capacity C17 ground connection, the negative pole being connect battery by electric capacity C20, electric capacity C20 also ground connection, 23 pins of single-chip microcomputer 13 connect battery cathode, 24 pins of single-chip microcomputer 13 connect anode, 25 pins of single-chip microcomputer 13 connect battery cathode, 1 pin of voltage stabilizing chip 17 connects anode, 2 pins of voltage stabilizing chip 17 connect 4 pins of voltage stabilizing chip 17 by electric capacity C19,5 pins of voltage stabilizing chip 17, by electric capacity C18 in parallel and electric capacity C21 ground connection, connect 2 pins of voltage stabilizing chip 17 simultaneously.
The both positive and negative polarity of battery separates 16,23,24,25 pins that a road enters single-chip microcomputer 13, build electric source monitoring circuit, carry out analog/digital (A/D) conversion, its result in the mode of " battery " figure in liquid crystal screen display, will reach the object of Real-Time Monitoring power supply; One tunnel enters 1 pin of voltage stabilizing chip 17, and it is that whole system is powered that 5 pins export 3.3V voltage.
Signal enters 5 pins of amplifying signal chip 11 by signal input terminal, export 2 pins of wave shaping chip 12 to from 1 pin of amplifying signal chip 11 after signal amplifies, after to input to 59 pins of single-chip microcomputer 13 from 1 pin PLUS port, complete the measurement of the rotary speed parameter of rotating machinery, the power consumption parameter that single-chip microcomputer 13 and CPLD14 complete rotating machinery is jointly measured.
" FRE " and " POWER " is the push button signalling of keyboard 2, and CPLD14 can judge it is measure " rotating speed " order or measure " power consumption " order according to push button signalling." DINPUT " is the input of d type flip flop, and " T2EXDQ " and " DQ " is the output of d type flip flop.
Wherein, voltage stabilizing chip 17 selects TPS73633 type.
The course of work of the present invention is:
Tested sinusoidal signal is amplified by amplifying circuit, and its enlargement factor is the ratio of resistance R86/R85; Sine wave signal is converted to the square-wave signal of same frequency by shaping circuit.
Measured signal is after filtering after circuit and amplification and rectification circuit, the square-wave signal that sinusoidal wave measured signal converts same frequency to forms 59 pins that digital signal enters single-chip microcomputer, the pulse number N of timer 0 tracer signal of single-chip microcomputer, timer 1 calculates N number of pulse time t used, substitutes into the measurement that formula completes rotary speed parameter; CPLD realizes d type flip flop, inform the timer 2 when start and stop work of single-chip microcomputer, single-chip microcomputer record first time rotary speed data f1, timer 2 calculates and preserves t1 now, after a period of time, single-chip microcomputer record second time rotary speed data f2, timer 2 calculates and preserves t2 now, substitutes into the measurement that formula completes power consumption parameter.
81 ~ 87,94 ~ 98 pins of single-chip microcomputer and liquid crystal display composition liquid crystal display drive display circuit.At liquid crystal screen display " rotating speed " printed words and supplemental characteristic, " power consumption " printed words and supplemental characteristic thereof and " battery figure ".
Because battery power voltage scope is 0 ~ 4.2V, and the supply voltage of whole system is 3.3V, therefore need to use mu balanced circuit that battery power voltage is fixed as 3.3V, both positive and negative polarity one tunnel of battery enters 1,2 pins formation mu balanced circuits of voltage stabilizing chip, and it is that whole system is powered that 5 pins export 3.3V voltages; One tunnel enters the middle formation electric source monitoring circuit of single-chip microcomputer, and carry out analog/digital (A/D) conversion, its voltage conversion value in the mode of " battery " figure in liquid crystal screen display, will reach the object of Real-Time Monitoring power supply.
Portable surveying instrument provided by the present invention, measuring accuracy is high, at the specialized equipment slow-speed of revolution (5s
-1) still can Measurement accuracy in situation, tachometric survey precision can reach ± 0.1Hz, and measurement of power loss precision can reach ± 0.1W; Antijamming capability is strong, and the acting in conjunction of metal shell and software filtering effectively can suppress interference, and making under the site environment of serious interference also can Measurement accuracy parameter; Volume is little, and the present invention only has a mobile phone size; Energy consumption is low, can run without interruption continuously and reach 12 hours.
Claims (1)
1. one kind for detecting the portable tester of rotating machinery rotating speed and power parameter, comprise housing (1), the bottom of housing (1) is provided with membrane keyboard (2), the top of housing (1) is provided with liquid crystal display display window (3), the inside of housing (1) is provided with circuit board assemblies, liquid crystal display (18) and battery, be provided with in the bottom of housing (1) battery charging hole and signal access terminal share USB interface (4), it is characterized in that: described circuit board assemblies inputs finishing circuit (5) by signal, digital signal processing circuit (6), data display circuit (7) and power supply voltage stabilizing observation circuit (8) composition, wherein, signal input finishing circuit (5), digital signal processing circuit (6), data display circuit (7) connects successively, power supply voltage stabilizing observation circuit (8) is respectively signal input finishing circuit (5), digital signal processing circuit (6) and data display circuit (7) power supply,
Described signal input finishing circuit (5) comprises filtering circuit (9) and amplification and rectification circuit (10), wherein, filtering circuit (9) comprises resistance R87, electric capacity C33, and amplification and rectification circuit (10) comprises amplifying signal chip (11) and wave shaping chip (12) and resistance R13, R15, R18, R75, R76, R77, R85, R86 and electric capacity C7, the annexation of each element is: signal input terminal is connected with 5 pins of amplifying signal chip (11) by resistance R87, 4 pin ground connection of amplifying signal chip (11), 6 pins of amplifying signal chip (11) are by resistance R86 ground connection, 7 pins are connect by resistance R85, 7 pins of amplifying signal chip (11) connect 3 pins of amplifying signal chip (11), 2 pins of amplifying signal chip (11) are by resistance R76 ground connection, 1 pin of amplifying signal chip (11) is also connect by resistance R77, 1 pin of amplifying signal chip (11) passes through 3 pins of resistance R18 welding wave shaping chip (12), 2 pins of wave shaping chip (12) are by resistance R15 ground connection, also by 1 pin of resistance R75 welding wave shaping chip (12), 4 pin ground connection of wave shaping chip (12), 8 pins of wave shaping chip (12) are by electric capacity C7 ground connection, connect power supply simultaneously, also connect its 1 pin by resistance R13, 1 pin connects PLUS port,
Described digital signal processing circuit (6) comprises single-chip microcomputer (13) and complex programmable logic element (14), wherein, 37 pins of single-chip microcomputer (13) connect power supply, 38 pin ground connection, 56 pins are connected with 20 pins of complex programmable logic element (14), 57 pins are connected with 19 pins of complex programmable logic element (14), 54 pins are connected with 10 pins of complex programmable logic element (14), 59 pins are connected with 8 pins of complex programmable logic element (14), 4 pin ground connection of complex programmable logic element (14), 9 pins connect power supply, 2 pins meet FRE, 3 pins meet POWER,
Described data display circuit (7) comprises single-chip microcomputer (13) and liquid crystal display (18);
Described power supply voltage stabilizing observation circuit (8) comprises mu balanced circuit (15) and electric source monitoring circuit (16), wherein, mu balanced circuit (15) comprises voltage stabilizing chip (17) and electric capacity C18, C19, C21, electric source monitoring circuit (16) comprises battery and single-chip microcomputer (13) and electric capacity C17, C20, concrete connection is as follows, 16 pins of single-chip microcomputer (13) are by electric capacity C17 ground connection, the negative pole of battery is connect by electric capacity C20, electric capacity C20 also ground connection, 23 pins of single-chip microcomputer (13) connect battery cathode, 24 pins of single-chip microcomputer (13) connect anode, 25 pins of single-chip microcomputer (13) connect battery cathode, 1 pin of voltage stabilizing chip (17) connects anode, 2 pins of voltage stabilizing chip (17) connect 4 pins of voltage stabilizing chip (17) by electric capacity C19, 5 pins of voltage stabilizing chip (17) are by electric capacity C18 in parallel and electric capacity C21 ground connection, connect 2 pins of voltage stabilizing chip (17) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087303.7A CN103148885B (en) | 2013-03-18 | 2013-03-18 | Portable tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310087303.7A CN103148885B (en) | 2013-03-18 | 2013-03-18 | Portable tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148885A CN103148885A (en) | 2013-06-12 |
| CN103148885B true CN103148885B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310087303.7A Active CN103148885B (en) | 2013-03-18 | 2013-03-18 | Portable tester |
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| CN (1) | CN103148885B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931100A (en) * | 2015-06-17 | 2015-09-23 | 核工业理化工程研究院 | Microcontroller-based disk loading rotation speed power consumption tester |
| CN105974150A (en) * | 2016-06-21 | 2016-09-28 | 核工业理化工程研究院 | Portable multipath synchronous rotating speed tester |
| CN113624217B (en) * | 2021-10-11 | 2021-12-07 | 南通意瑞测绘服务有限公司 | Portable collapsible mapping device |
| CN114113782A (en) * | 2021-11-25 | 2022-03-01 | 核工业理化工程研究院 | Portable rotating machinery frequency tester |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106912A (en) * | 1986-10-12 | 1987-09-02 | 吉林工业大学 | Diesel engine rated power and specified specific fuel consumption fast detecting instrument |
| CA2101712C (en) * | 1992-07-31 | 1996-07-09 | Koji Fujii | Resistance welding monitor |
| CN2417478Y (en) * | 2000-04-12 | 2001-01-31 | 姚伟联 | Portable and digital type instrument for measuring power and electric energy |
| CN2766245Y (en) * | 2005-01-25 | 2006-03-22 | 扬州双鸿电子有限公司 | Multifunctional current detecting device |
| EP1877806B1 (en) * | 2005-04-25 | 2009-09-02 | Nxp B.V. | Supply voltage monitoring |
| CN1728031A (en) * | 2005-06-29 | 2006-02-01 | 上海大学 | Digital Fuzzy Controller for Viscous Liquid Speed-governing Clutch |
| CN100469031C (en) * | 2006-08-07 | 2009-03-11 | 南京航空航天大学 | Intelligent Wireless Sensor Network Nodes for Health Monitoring of Engineering Structures |
| CN201696326U (en) * | 2010-06-25 | 2011-01-05 | 浪潮电子信息产业股份有限公司 | A PWM fan speed regulation tool |
| CN202020457U (en) * | 2011-01-31 | 2011-11-02 | 东南大学 | Ultrasonic ophthalmology measurement device |
| CN102721565B (en) * | 2012-07-02 | 2014-11-26 | 河南省特种设备安全检测研究院 | Braking performance comprehensive testing device of brake and testing method thereof |
| CN203163755U (en) * | 2013-03-18 | 2013-08-28 | 核工业理化工程研究院 | Portable test instrument |
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| CN103148885A (en) | 2013-06-12 |
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