CN110348796A - Logistics information collection system - Google Patents
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- CN110348796A CN110348796A CN201910675665.5A CN201910675665A CN110348796A CN 110348796 A CN110348796 A CN 110348796A CN 201910675665 A CN201910675665 A CN 201910675665A CN 110348796 A CN110348796 A CN 110348796A
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- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 230000006641 stabilisation Effects 0.000 claims abstract description 9
- 238000011105 stabilization Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
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- 230000033228 biological regulation Effects 0.000 abstract description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/083—Shipping
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/003—Modifications for increasing the reliability for protection
- H03K19/00346—Modifications for eliminating interference or parasitic voltages or currents
- H03K19/00353—Modifications for eliminating interference or parasitic voltages or currents in bipolar transistor circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
- H03K19/082—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using bipolar transistors
- H03K19/084—Diode-transistor logic
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Abstract
The invention discloses logistics information collection systems, including frequency collection circuit, feed back notch circuit and amplifier voltage regulator circuit, logistics information analog signal frequency before the frequency collection circuit control terminal for data acquisition demodulation, the feedback notch circuit uses transport and placing device AR1 and diode D2, diode D3 and capacitor C2 composition Dolby circuit is to signal de-noising, with transport and placing device AR2 and diode D5, diode D6 forms the disturbing signal in filter circuit filtering signal, and use triode Q5, triode Q6, which forms push-pull circuit, reduces loss of signal, through diode D8, the limit circuit of diode D9 composition is to feedback signal after signal limiter to triode Q1 base stage, the amplifier voltage regulator circuit exports after forming voltage regulator circuit stabilization signal current potential with triode Q7 and voltage-stabiliser tube D7, it can be right Logistics information analog signal frequency real-time monitoring before controlling terminal demodulation, to the revise signal for being converted to controlling terminal demodulation front simulation signal after Signal Regulation.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to logistics information collection system.
Background technique
Currently, logistics information collection system, including controlling terminal, data processor, signal transmission module and information collection
Module, the information acquisition module acquire logistics information, are sent to data processor, data processing through signal transmission module
It is mutually sent in controlling terminal after device modulation logistics information through signal transmission module, controlling terminal handles logistics information
Logistics information is monitored in real time, since signal is during long distance transmission, it may occur that decaying, interference phenomenon lead to control eventually
Frequency analog signal before holding received demodulation has error, can ignore when error is smaller, but when error is larger will be direct
Cause controlling terminal received signal to be distorted, seriously affects logistics information collection system using effect.
Summary of the invention
For above situation, for the defect for overcoming the prior art, purpose of the present invention is to provide logistics information collection systems
System, have be skillfully constructed, the characteristic of human oriented design, can to controlling terminal demodulate before logistics information analog signal frequency
Real-time monitoring, to the revise signal for being converted to controlling terminal demodulation front simulation signal after Signal Regulation.
Its technical solution solved is logistics information collection system, including the transmission of controlling terminal, data processor, signal
Module and information acquisition module, the information acquisition module acquire logistics information, are sent to data through signal transmission module
Processor, data processor are mutually sent in controlling terminal after modulating logistics information through signal transmission module, controlling terminal
It handles logistics information to monitor logistics information in real time, further includes frequency collection circuit, feedback notch circuit and amplifier pressure stabilizing
Circuit, the logistics information analog signal frequency before the frequency collection circuit control terminal for data acquisition demodulation, the feedback notch electricity
Road transport transport and placing device AR1 and diode D2, diode D3 and capacitor C2 composition Dolby circuit use three to signal de-noising
Pole pipe Q1, triode Q2 and resistance R5- resistance R7 composition notch circuit are to signal notch, wherein with silicon-controlled VTL1 and surely
Pressure pipe D4 forms detection circuit and screens abnormal signal, forms switching circuit through triode Q3, triode Q4, triode Q3 feedback is high
For level signal to triode Q2 base potential, triode Q4 feeds back low level signal to triode Q1 base stage, finally uses amplifier
Device AR2 and diode D5, diode D6 form the disturbing signal in filter circuit filtering signal, and use triode Q5, three
Pole pipe Q6, which forms push-pull circuit, reduces loss of signal, after the limit circuit of diode D8, diode D9 composition is to signal limiter
Feedback signal to triode Q1 base stage, the amplifier voltage regulator circuit uses transport and placing device AR3 with phase amplified signal, while using three poles
It is exported after pipe Q7 and voltage-stabiliser tube D7 composition voltage regulator circuit stabilization signal current potential, that is to say and demodulate front simulation signal for controlling terminal
Revise signal.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art；
1. with triode Q1, triode Q2 and resistance R5- resistance R7 composition notch circuit to signal notch, resistance R5- resistance
Abnormal signal frequency is isolated in R7 and capacitor C3- capacitor C5 composition frequency selection circuit, while putting with triode Q1, triode Q2 composition
Signal after big circuit Amplification and insulation, guarantees the consistency of signal phase, wherein forming with silicon-controlled VTL1 and voltage-stabiliser tube D4
Detection circuit screens abnormal signal, and the conducting voltage using silicon-controlled VTL1 judges abnormal signal, by abnormal signal through triode
Q3, triode Q4 form switching circuit, and triode Q3 feeds back high level signal to triode Q2 base potential, adjusts notch circuit
Output signal peak value, triode Q4 feedback low level signal to triode Q1 base stage, adjusts transport and placing device AR1 output signal peak value,
Realize the effect of adjustment signal peak value；
2. improving letter with the disturbing signal in transport and placing device AR2 and diode D5, diode D6 composition filter circuit filtering signal
Number anti-interference, and with triode Q5, triode Q6 composition push-pull circuit reduce loss of signal, through diode D8, two
The limit circuit of pole pipe D9 composition further adjusts notch circuit peak to feedback signal after signal limiter to triode Q1 base stage
Value that is to say with exporting after triode Q7 and voltage-stabiliser tube D7 composition voltage regulator circuit stabilization signal current potential as controlling terminal demodulation
The revise signal of front simulation signal reduces the error of controlling terminal demodulation front simulation signal, improves logistics information collection system
Performance.
Detailed description of the invention
Fig. 1 is the circuit diagram of logistics information collection system of the present invention.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to attached drawing 1 to embodiment
Detailed description in, can clearly present.The structure content being previously mentioned in following embodiment is with Figure of description for ginseng
It examines.
Embodiment one, logistics information collection system, including frequency collection circuit, feedback notch circuit and amplifier pressure stabilizing electricity
Road, the logistics information analog signal frequency before the frequency collection circuit control terminal for data acquisition demodulation, the feedback notch circuit
With transport and placing device AR1 and diode D2, diode D3 and capacitor C2 composition Dolby circuit to signal de-noising, while using three poles
Pipe Q1, triode Q2 and resistance R5- resistance R7 composition notch circuit use transport and placing device AR2 and diode to signal notch
D5, diode D6 composition filter circuit filter out the disturbing signal in signal, wherein forming with silicon-controlled VTL1 and voltage-stabiliser tube D4
Detection circuit screens abnormal signal, forms switching circuit through triode Q3, triode Q4, triode Q3 feeds back high level signal extremely
Triode Q2 base potential, triode Q4 feed back low level signal to triode Q1 base stage, finally use transport and placing device AR2 and two
Pole pipe D5, diode D6 form the disturbing signal in filter circuit filtering signal, and form with triode Q5, triode Q6
Push-pull circuit reduce loss of signal, through diode D8, diode D9 composition limit circuit to signal limiter after feedback signal extremely
Triode Q1 base stage, the amplifier voltage regulator circuit use transport and placing device AR3 with phase amplified signal, while using triode Q7 and pressure stabilizing
It is exported after pipe D7 composition voltage regulator circuit stabilization signal current potential, that is to say the revise signal for demodulating front simulation signal for controlling terminal；
The feedback notch circuit forms Dolby circuit pair with transport and placing device AR1 and diode D2, diode D3 and capacitor C2
Signal de-noising, transport and placing device AR1 reduce signal noise with phase amplified signal, while using diode D2, diode D3 and capacitor C2
Than stabilization signal, with triode Q1, triode Q2 and resistance R5- resistance R7 composition notch circuit to signal notch, resistance
Abnormal signal frequency is isolated in R5- resistance R7 and capacitor C3- capacitor C5 composition frequency selection circuit, while using triode Q1, triode
Q2 forms the signal after amplifying circuit Amplification and insulation, guarantees the consistency of signal phase, wherein using silicon-controlled VTL1 and pressure stabilizing
Pipe D4 forms detection circuit and screens abnormal signal, and the conducting voltage using silicon-controlled VTL1 judges abnormal signal, by abnormal signal
Switching circuit is formed through triode Q3, triode Q4, triode Q3 feeds back high level signal to triode Q2 base potential, adjusts
Notch circuit output signal peak value, triode Q4 feed back low level signal to triode Q1 base stage, adjust transport and placing device AR1 output letter
Number peak value realizes the effect of adjustment signal peak value, finally forms filtered electrical with transport and placing device AR2 and diode D5, diode D6
Disturbing signal in the filtering signal of road improves the anti-interference of signal, and recommends electricity with triode Q5, triode Q6 composition
Road reduces loss of signal, and feedback signal is to triode after the limit circuit of diode D8, diode D9 composition is to signal limiter
Q1 base stage further adjusts notch current peak, that is to say and further stablizes feedback notch circuit output signal current potential；
The feedback notch circuit specific structure, one end of the homophase input terminating resistor R2 of transport and placing device AR1 and triode Q4's
Collector, the anode of another terminating diode D2 of resistance R2 and one end of capacitor C2, the cathode of diode D2 meet diode D3
Cathode, the output terminating resistor R4 of transport and placing device AR1, resistance R6, the base stage of one end of capacitor C4 and triode Q1, capacitor C2
The cathode of the other end and diode D3, one end of the anti-phase input terminating resistor R3 of transport and placing device AR1 and the other end of resistance R4,
The other end of resistance R3 is grounded, one end of another terminating resistor R7 of resistance R6, capacitor C3, the other end ground connection of capacitor C3, electricity
Hinder one end of another terminating resistor R9 of R7, capacitor C5, the one of the other end of another termination capacitor C4 of capacitor C5 and resistance R5
End, the other end ground connection of resistance R5, another terminating resistor R10, resistance R14, one end of resistance R16 and the triode Q2 of resistance R9
Emitter, the cathode of voltage-stabiliser tube D4 and the cathode of silicon-controlled VTL1, the base stage of triode Q2 connects the collector of triode Q1
It is grounded with the emitter of one end of resistance R8, triode Q1, the other end, the triode Q3 of the collector connecting resistance R8 of triode Q2
Collector and power supply+5V, the base stage of triode Q3 connects the base stage of triode Q4 and one end of capacitor C6, the transmitting of triode Q3
Pole connects the emitter of triode Q4 and one end of resistance R13, the other end ground connection of resistance R13, and the cathode of silicon-controlled VTL1 connects electricity
One end of R11, the other end of another termination capacitor C6 of resistance R11 are hindered, the control electrode of silicon-controlled VTL1 is meeting voltage-stabiliser tube D4 just
One end of pole and resistance R12, capacitor C7, the other end ground connection of resistance R12, capacitor C7, another termination transport and placing device of resistance R14
The cathode of the non-inverting input terminal of AR2 and one end of resistance R15 and diode D5, the anti-phase input terminating resistor of transport and placing device AR2
One end of R17, the other end ground connection of resistance R17, the anode of output terminating diode D5 of transport and placing device AR2 and bearing for diode D6
Pole, the other end of the positive connecting resistance R15 of diode D6 and one end of resistance R18, another termination triode Q5 of resistance R18,
The base stage of triode Q6 and the other end of resistance R16, the collector of triode Q5 meet power supply+5V, and the emitter of triode Q5 connects
The cathode of the anode of the emitter of triode Q6 and diode D8, diode D9, the grounded collector of triode Q6, diode D8
Cathode connect diode D9 anode and triode Q1 base stage.
Embodiment two, on the basis of example 1, the amplifier limit circuit is with transport and placing device AR3 with mutually amplification letter
Number, while with being exported after triode Q7 and voltage-stabiliser tube D7 composition voltage regulator circuit stabilization signal current potential, it that is to say as controlling terminal
The revise signal of front simulation signal is demodulated, the error of controlling terminal demodulation front simulation signal is reduced, improves logistics information collection system
The performance of system, the output end of the homophase input termination transport and placing device AR4 of transport and placing device AR5 and one end of resistance R9, transport and placing device AR3's is anti-
One end of terminating resistor R20 is mutually inputted, the other end ground connection of resistance R20, the output terminating resistor R19's of transport and placing device AR3 is another
The collector at end and one end of resistance R21, triode Q7, the base stage of triode Q7 connect the cathode of voltage-stabiliser tube D7, resistance R21 it is another
One end, the plus earth of voltage-stabiliser tube D7, one end of the emitter connecting resistance R22 of triode Q7, another termination signal of resistance R22
Output port.
Embodiment three, on the basis of example 2, the frequency collection circuit select the frequency of model SJ-ADC to adopt
Logistics information analog signal frequency before the demodulation of storage J1 control terminal for data acquisition, the power supply termination power+5V of frequency collection device J1,
The ground terminal of frequency collection device J1 is grounded, the cathode of frequency collection device J1 output termination voltage-stabiliser tube D1 and one end of resistance R1, surely
The plus earth of pressure pipe D1, one end of another termination capacitor C1 of resistance R1, diode D2 anode, another termination of capacitor C1
Ground.
When the present invention is specifically used, logistics information collection system, including controlling terminal, data processor, signal transmit mould
Block and information acquisition module, the information acquisition module acquire logistics information, are sent at data through signal transmission module
Device is managed, is mutually sent in controlling terminal after data processor modulation logistics information through signal transmission module, at controlling terminal
It manages logistics information to monitor logistics information in real time, further includes frequency collection circuit, feedback notch circuit and amplifier pressure stabilizing electricity
Road, the logistics information analog signal frequency before the frequency collection circuit control terminal for data acquisition demodulation, the feedback notch circuit
With transport and placing device AR1 and diode D2, diode D3 and capacitor C2 composition Dolby circuit to signal de-noising, transport and placing device AR1 is same
Phase amplified signal, while signal noise ratio, stabilization signal, with three poles are reduced using diode D2, diode D3 and capacitor C2
Pipe Q1, triode Q2 and resistance R5- resistance R7 composition notch circuit are to signal notch, resistance R5- resistance R7 and capacitor C3- capacitor
C5 forms frequency selection circuit and abnormal signal frequency is isolated, while forming amplifying circuit Amplification and insulation with triode Q1, triode Q2
Signal afterwards guarantees the consistency of signal phase, wherein different with silicon-controlled VTL1 and voltage-stabiliser tube D4 composition detection circuit screening
Regular signal, the conducting voltage using silicon-controlled VTL1 judge abnormal signal, and abnormal signal is formed through triode Q3, triode Q4
Switching circuit, triode Q3 feedback high level signal to triode Q2 base potential, adjusting notch circuit output signal peak value, three
Pole pipe Q4 feeds back low level signal to triode Q1 base stage, adjusts transport and placing device AR1 output signal peak value, realizes adjustment signal peak
The effect of value, finally with the disturbance letter in transport and placing device AR2 and diode D5, diode D6 composition filter circuit filtering signal
Number, the anti-interference of signal is improved, and reduce loss of signal with triode Q5, triode Q6 composition push-pull circuit, through two
The limit circuit of pole pipe D8, diode D9 composition further adjusts limit to feedback signal after signal limiter to triode Q1 base stage
Wave circuit peak value that is to say and further stablize feedback notch circuit output signal current potential, the amplifier voltage regulator circuit uses amplifier
Device AR3 is exported with phase amplified signal, while after forming voltage regulator circuit stabilization signal current potential with triode Q7 and voltage-stabiliser tube D7,
It is the revise signal that front simulation signal is demodulated for controlling terminal.
The above is that further detailed description of the invention, and it cannot be said that the present invention in conjunction with specific embodiment
Specific implementation is limited only to this；Belonging to the present invention and for those skilled in the technology concerned, it is being based on skill of the present invention
Under the premise of art scheme thinking, it is made expansion and operating method, data replacement, should all fall in the scope of the present invention it
It is interior.
Claims (3)
1. logistics information collection system, including controlling terminal, data processor, signal transmission module and information acquisition module, institute
Information acquisition module acquisition logistics information is stated, is sent to data processor, data processor modulation through signal transmission module
It is mutually sent in controlling terminal after logistics information through signal transmission module, controlling terminal handles logistics information to logistics
Information real time monitoring, which is characterized in that further include frequency collection circuit, feedback notch circuit and amplifier voltage regulator circuit, the frequency
Logistics information analog signal frequency before the demodulation of rate Acquisition Circuit control terminal for data acquisition, the feedback notch circuit use transport and placing device
AR1 and diode D2, diode D3 and capacitor C2 composition Dolby circuit use triode Q1, three poles to signal de-noising
Pipe Q2 and resistance R5- resistance R7 composition notch circuit is to signal notch, wherein with silicon-controlled VTL1 and voltage-stabiliser tube D4 composition inspection
Slowdown monitoring circuit screens abnormal signal, forms switching circuit through triode Q3, triode Q4, triode Q3 feeds back high level signal to three
Pole pipe Q2 base potential, triode Q4 feed back low level signal to triode Q1 base stage, finally use transport and placing device AR2 and two poles
Pipe D5, diode D6 form the disturbing signal in filter circuit filtering signal, and push away with triode Q5, triode Q6 composition
Drawing circuit reduces loss of signal, and feedback signal is to three after the limit circuit of diode D8, diode D9 composition is to signal limiter
Pole pipe Q1 base stage, the amplifier voltage regulator circuit use transport and placing device AR3 with phase amplified signal, while using triode Q7 and voltage-stabiliser tube
It is exported after D7 composition voltage regulator circuit stabilization signal current potential, that is to say the revise signal for demodulating front simulation signal for controlling terminal；
The feedback notch circuit includes transport and placing device AR1, one end of the homophase input terminating resistor R2 of transport and placing device AR1 and triode
The collector of Q4, the anode of another terminating diode D2 of resistance R2 and one end of capacitor C2, the cathode of diode D2 connect two poles
The cathode of pipe D3, transport and placing device AR1 output terminating resistor R4, resistance R6, one end of capacitor C4 and triode Q1 base stage, capacitor
The other end of C2 and the cathode of diode D3, one end of the anti-phase input terminating resistor R3 of transport and placing device AR1 and resistance R4's is another
One end, the other end ground connection of resistance R3, one end of another terminating resistor R7 of resistance R6, capacitor C3, another termination of capacitor C3
Ground, one end of another terminating resistor R9 of resistance R7, capacitor C5, the other end and resistance R5 of another termination capacitor C4 of capacitor C5
One end, resistance R5 the other end ground connection, another terminating resistor R10, resistance R14, one end of resistance R16 and three poles of resistance R9
The cathode of the emitter of pipe Q2, the cathode of voltage-stabiliser tube D4 and silicon-controlled VTL1, the base stage of triode Q2 connect the collection of triode Q1
One end of electrode and resistance R8, the emitter ground connection of triode Q1, the other end of the collector connecting resistance R8 of triode Q2, three poles
The collector and power supply+5V of pipe Q3, the base stage of triode Q3 connect the base stage of triode Q4 and one end of capacitor C6, triode Q3's
Emitter connects the emitter of triode Q4 and one end of resistance R13, the other end ground connection of resistance R13, the cathode of silicon-controlled VTL1
One end of connecting resistance R11, the other end of another termination capacitor C6 of resistance R11, the control electrode of silicon-controlled VTL1 meet voltage-stabiliser tube D4
Anode and resistance R12, capacitor C7 one end, resistance R12, capacitor C7 the other end ground connection, another termination amplifier of resistance R14
The anti-phase input of the cathode of the non-inverting input terminal of device AR2 and one end of resistance R15 and diode D5, transport and placing device AR2 terminates electricity
One end of R17 is hindered, the other end ground connection of resistance R17, the anode of the output terminating diode D5 of transport and placing device AR2 is with diode D6's
Cathode, the other end of the positive connecting resistance R15 of diode D6 and one end of resistance R18, another termination triode of resistance R18
The other end of Q5, the base stage of triode Q6 and resistance R16, the collector of triode Q5 connect power supply+5V, the emitter of triode Q5
Connect the cathode of the emitter of triode Q6 and the anode of diode D8, diode D9, the grounded collector of triode Q6, diode
The cathode of D8 connects the anode of diode D9 and the base stage of triode Q1.
2. logistics information collection system as described in claim 1, which is characterized in that the amplifier voltage regulator circuit includes transport and placing device
The output end of the homophase input termination transport and placing device AR4 of AR5, transport and placing device AR5 and one end of resistance R9, the reverse phase of transport and placing device AR3 are defeated
Enter one end of terminating resistor R20, the other end ground connection of resistance R20, the other end of the output terminating resistor R19 of transport and placing device AR3 and
One end of resistance R21, triode Q7 collector, the base stage of triode Q7 connect the cathode of voltage-stabiliser tube D7, resistance R21 it is another
End, the plus earth of voltage-stabiliser tube D7, one end of the emitter connecting resistance R22 of triode Q7, another termination signal of resistance R22 are defeated
Exit port.
3. logistics information collection system as described in claim 1, which is characterized in that the frequency collection circuit includes model
The ground terminal of the power supply termination power+5V of the frequency collection device J1 of SJ-ADC, frequency collection device J1, frequency collection device J1 are grounded,
The cathode of frequency collection device J1 output termination voltage-stabiliser tube D1 and one end of resistance R1, the plus earth of voltage-stabiliser tube D1, resistance R1's
One end of another termination capacitor C1, diode D2 anode, the other end ground connection of capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675665.5A CN110348796B (en) | 2019-07-25 | 2019-07-25 | Logistics information acquisition system |
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|---|---|---|---|
| CN201910675665.5A CN110348796B (en) | 2019-07-25 | 2019-07-25 | Logistics information acquisition system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110830059A (en) * | 2019-10-21 | 2020-02-21 | 河南工业贸易职业学院 | Intelligent logistics system with real-time information exchange function |
| CN110849609A (en) * | 2019-11-29 | 2020-02-28 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
| CN111030609A (en) * | 2020-01-10 | 2020-04-17 | 南阳理工学院 | Cloud computing network signal adjusting device |
| CN111245456A (en) * | 2020-03-01 | 2020-06-05 | 徐晨旭 | Service management system based on big data |
| CN112187299A (en) * | 2020-10-14 | 2021-01-05 | 深圳市洛奇机电科技有限公司 | Logistics Internet of things positioning and calibrating system |
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| CN110830059A (en) * | 2019-10-21 | 2020-02-21 | 河南工业贸易职业学院 | Intelligent logistics system with real-time information exchange function |
| CN110830059B (en) * | 2019-10-21 | 2020-12-25 | 河南工业贸易职业学院 | Intelligent logistics system with real-time information exchange function |
| CN110849609A (en) * | 2019-11-29 | 2020-02-28 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
| CN110849609B (en) * | 2019-11-29 | 2021-04-27 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
| CN111030609A (en) * | 2020-01-10 | 2020-04-17 | 南阳理工学院 | Cloud computing network signal adjusting device |
| CN111245456A (en) * | 2020-03-01 | 2020-06-05 | 徐晨旭 | Service management system based on big data |
| CN111245456B (en) * | 2020-03-01 | 2020-10-02 | 北京瞭望神州科技有限公司 | Service management system based on big data |
| CN112187299A (en) * | 2020-10-14 | 2021-01-05 | 深圳市洛奇机电科技有限公司 | Logistics Internet of things positioning and calibrating system |
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