CN105403262A - Flow monitoring device - Google Patents
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- CN105403262A CN105403262A CN201510749766.4A CN201510749766A CN105403262A CN 105403262 A CN105403262 A CN 105403262A CN 201510749766 A CN201510749766 A CN 201510749766A CN 105403262 A CN105403262 A CN 105403262A
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Abstract
The invention provides a flow monitoring device, and belongs to the technical field of flow electronic monitoring. The flow monitoring device can solve the problems in the prior art that the working efficiency of the conventional flow monitoring device is low, and the housing protection level is low. The flow monitoring device includes: a control module for collecting voltage signals, outputting the voltage signals and processing data; a signal processing module which is connected to the control module, and is used for being connected to a sensor externally connected to the flow monitoring device, is used for converting current signals acquired by the sensor into voltage signals and sending the voltage signals to the control module; a communication module which is connected to the control module and is used for being connected to an input device externally connected to the flow monitoring device; and a display module which is connected to the control module and is used for outputting display signals. The flow monitoring device has the advantages that the flow monitoring device is provided with a plurality of signal processing modules and an extensive communication interface, and is high in protection level.
Description
Technical field
The invention belongs to flow electric monitoring field, relating to a kind of flow monitor, particularly a kind of flow monitor for monitoring fracturing truck hydrochloric acid solution.
Background technology
Flow monitor is generally used for the amount flow through of monitoring chemical article in pipeline, and the data that use traffic monitor obtains are to control the flow of chemical article in pipeline.Usually in insides of pipes, flow sensor is housed, then be connected with flow sensor by flow monitor, flow monitor obtains the data of real flow in pipeline by the data that obtain of process flow sensor, and using the standard of these data ducted flow of this adjustment as whether.The input signal of the flow monitor that general life now uses in producing is generally one or two, can not meet the requirement of raising the efficiency in production.Simultaneously in the production of convergence Automated condtrol now, computing machine and equipment is also adopted to connect the mode of going forward side by side and working and interrogating for the control of equipment and the mode that obtains data from equipment.
Meanwhile, existing flow monitor lacks the such parts of display screen to carry out the transmission of people's machine information; The degree of protection of the shell of the existing flow detector for chemical article is not high.
In sum, for solving existing flow monitor deficiency functionally, need to design a kind of be provided with multiple signal processing module, comprise easily extensible communication interface, flow monitor that degree of protection is high.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of be provided with multiple signal processing module, comprise easily extensible communication interface, flow monitor that degree of protection is high.
Object of the present invention realizes by following technical proposal: a kind of flow monitor, comprising:
Signal processing module, is passed to control module for connecting the sensor that is external in flow monitor and the current signal that sensor obtains being converted into voltage signal;
Communication module, for connecting the input equipment being external in flow monitor;
Display module, for showing the data of voltage signal;
Control module, for collecting voltage signal, output voltage signal and process data.
According to above-mentioned a kind of flow monitor, comprise the first power module, be connected with signal processing module, for powering for signal processing module, described first power module is also for providing positive pole input voltage.
According to above-mentioned a kind of flow monitor, described signal processing module comprises first input end to the 9th input end, first analog signal processing circuit, the second analog signal processing circuit, the first pulse signal treatment circuit, second pulse signal treatment circuit, first fuse to the 8th fuse, described first input end to four-input terminal respectively through the first fuse, the 3rd fuse, 5th fuse, connects positive pole input voltage after the 7th fuse; Described 5th input end and the 6th input end connect the first analog signal processing circuit and the second analog signal processing circuit respectively after the second fuse and the 4th fuse, described 8th input end and the 9th input end connect the first pulse signal treatment circuit and the second pulse signal treatment circuit respectively after the 8th fuse and the 6th fuse, described 7th input end grounding; Described signal processing module also comprises pulse signal process chip.
According to above-mentioned a kind of flow monitor, described first analog signal processing circuit and the second analog signal processing circuit have identical circuit structure, described first analog signal processing circuit comprises the first resistance to the 6th resistance, the first operational amplifier, the second operational amplifier, the first electric capacity, the second electric capacity, the first diode, the first signal output part, the first analog signal processing chip, described first analog signal processing chip comprises first interface to the 8th interface, 5th input end of described signal processing module connects the second resistance after the second fuse, ground connection after the second resistance, 5th input end of described signal processing module also connects the inverting input of the first operational amplifier after the second fuse and the first resistance, the output terminal of the first operational amplifier connects the first interface of the first analog signal processing chip after the 4th resistance, normal phase input end ground connection after the 3rd resistance of described first operational amplifier, first parallel circuit of described first diode and the first electric capacity composition is parallel to inverting input and the output terminal of the first operational amplifier, connects the inverting input of termination first operational amplifier of the negative electrode of the first diode in described first parallel circuit, 3rd interface of described first analog signal processing chip connects the inverting input of the first operational amplifier, 6th interface of described first analog signal processing chip connects the inverting input of the second operational amplifier, described second electric capacity and the 5th resistance form the second parallel circuit, the direction input end of one termination second operational amplifier of the second parallel circuit, the other end connects the output terminal of the second operational amplifier after the 6th resistance, the output terminal of described second operational amplifier connects the first signal output part after the 6th resistance, the normal phase input end of described second operational amplifier connects the 5th input end of the first analog signal processing chip, and this positive input end grounding, second interface of described first analog signal processing chip connects positive pole input voltage, the 4th interfacing ground.
According to above-mentioned a kind of flow monitor, described first pulse signal treatment circuit comprises the 7th resistance to the 11 resistance, 3rd operational amplifier, first pulse signal process chip, described first pulse signal process chip comprises first interface to the 8th interface, 8th input end of described signal processing module connects the inverting input of the 3rd operational amplifier after the 6th fuse and the 7th resistance, inverting input ground connection after the 8th resistance of the 3rd operational amplifier, the normal phase input end of described 3rd operational amplifier connects positive pole input voltage after the 9th resistance, this normal phase input end is ground connection after the tenth resistance also, the output terminal of described 3rd operational amplifier connects the 3rd interface of the first pulse signal process chip, and the 4th interface of described first pulse signal process chip connects positive pole input voltage after the 11 resistance, described first pulse signal treatment circuit and the second pulse signal treatment circuit have identical circuit structure, described signal processing module also comprises the 3rd electric capacity, 12 resistance, 13 resistance, secondary signal output terminal, 3rd signal output part, 6th interface of described first pulse signal process chip connects secondary signal output terminal, 5th interface of the first pulse signal process chip connects the 6th interface of the first pulse signal process chip after the 3rd electric capacity and the 12 resistance, and the 5th interfacing ground of described first pulse signal process chip, also after the 3rd electric capacity, connect positive pole input voltage, 8th interface of described first pulse signal process chip connects positive pole input voltage and after the 13 resistance, connects the 7th interface of the first pulse signal process chip, 7th interface of the first pulse signal process chip connects the 3rd signal output part.
According to above-mentioned a kind of flow monitor, described first power module comprises the first voltage input end, second voltage input end, 4th electric capacity is to the 7th electric capacity, 14 resistance to the 15 resistance, the second diode, the first voltage stabilizing chip and the second voltage stabilizing chip, first voltage stabilizing chip comprises first interface to the 6th interface, and the second voltage stabilizing chip comprises first interface to the 4th interface, described first voltage input end connects the anode of the second diode, the negative electrode of the second diode connects the first interface of the first voltage stabilizing chip, second voltage input end of the first power module connects the first interface of the first voltage stabilizing chip, and described 4th Capacitance parallel connection is in the two ends of the second interface of the first interface of the first voltage stabilizing chip and the first voltage stabilizing chip, 5th interface of described first voltage stabilizing chip connects the second interface of the second voltage stabilizing chip, 6th interface of the first voltage stabilizing chip connects the first interface of the second voltage stabilizing chip, described 5th electric capacity, 6th electric capacity, 14 resistance composition the 3rd parallel circuit, 3rd parallel circuit is parallel to the two ends of the 5th interface of the first voltage stabilizing chip and the 6th interface of the first voltage stabilizing chip, described 5th electric capacity connects one end ground connection of the 5th interface of the first voltage stabilizing chip, another termination positive pole input voltage, described 15 resistance and the 7th electric capacity composition the 4th parallel circuit, 4th parallel circuit is parallel to the two ends of the 5th interface of the second voltage stabilizing chip and the 3rd interface of the second voltage stabilizing chip.
According to above-mentioned a kind of flow monitor, described communication module comprises first interface to the 4th interface, second analog signal processing chip, 3rd analog signal processing chip, MAX485 chip U7, one 485 communication interface, 2 485 communication interface, 3 485 communication interface, 8th electric capacity, 9th electric capacity, 16 resistance is to the 18 resistance, 3rd diode, 4th diode, described MAX485 chip U7 comprises first interface to the 8th interface, second interface of described communication module connects the 6th interface of MAX485 chip U7, 3rd interface of communication module connects the 7th interface of MAX485 chip U7, described 16 resistance and the 17 resistance are all parallel to the two ends of the second interface of communication module and the 3rd interface of communication module, second interface of described communication module is successively through the 8th electric capacity, the anode of the 3rd diode, the 6th interface of MAX485 chip U7 is connect after the negative electrode of the 3rd diode, 3rd interface of described communication module connects the 7th interface of MAX485 chip U7 successively after the negative electrode of the anode of the 9th electric capacity, the 4th diode, the 3rd diode, described MAX485 chip U7 the 4th interface connect the 6th interface of the second analog signal processing chip, second interface of MAX485 chip U7 and the 3rd interface all connect the 7th interface of the second analog signal processing chip, 3rd interface of described second analog signal processing chip connects the one 485 communication interface, second interface of the second analog signal processing chip connects the 2 485 communication interface, the first interface of described MAX485 chip U7 connects the 3rd interface of the 3rd analog signal processing chip, and the 6th interface of described 3rd analog signal processing chip connects the 3 485 communication interface.
According to above-mentioned a kind of flow monitor, described flow monitor also comprises display screen, and described display screen is connected with display module.
According to above-mentioned a kind of flow monitor, described control module comprises PIC18F4685 chip, and described control module also comprises a key-press module, and key-press module is provided with some buttons.
Compared with prior art, the present invention includes following advantage:
1. flow monitor is provided with 2 pulse signal processing modules and 2 analog signal processing modules, and processing signals efficiency is higher.
2. flow monitor is provided with display screen, can show the data measured by monitor in real time.
3. flow monitor is provided with extendible 485 communication interfaces, makes flow monitor have information input/output function.
4. the shell protection hierarchical level of flow monitor reaches IP67, and the flow monitor being is more stable, safer during measurement chemical article flow.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of signal processing module.
Fig. 2 is the circuit diagram of the first power module.
Fig. 3 is the circuit diagram of communication module.
Fig. 4 is the circuit diagram of control module.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figures 1 to 4, this flow monitor comprises a kind of flow monitor, it is characterized in that, comprising: signal processing module, be passed to control module for connecting the sensor that is external in flow monitor and the current signal that sensor obtains being converted into voltage signal; Communication module, for connecting the input equipment being external in flow monitor; Display module, for showing the data of voltage signal; Control module, for collecting voltage signal, output voltage signal and process data.
According to above-mentioned a kind of flow monitor, comprise the first power module, be connected with signal processing module, for powering for signal processing module, described first power module is also for providing positive pole input voltage.
According to above-mentioned a kind of flow monitor, described signal processing module comprises first input end to the 9th input end, first analog signal processing circuit, the second analog signal processing circuit, the first pulse signal treatment circuit, second pulse signal treatment circuit, first fuse F1 to the 8th fuse F8, described first input end to four-input terminal respectively through the first fuse F1, the 3rd fuse F3,5th fuse F5, connects positive pole input voltage after the 7th fuse F7; Described 5th input end and the 6th input end connect the first analog signal processing circuit and the second analog signal processing circuit respectively after the second fuse F2 and the 4th fuse F4, described 8th input end and the 9th input end connect the first pulse signal treatment circuit and the second pulse signal treatment circuit respectively after the 8th fuse F8 and the 6th fuse F6, described 7th input end grounding; Described signal processing module also comprises pulse signal process chip.
According to above-mentioned a kind of flow monitor, described first analog signal processing circuit and the second analog signal processing circuit have identical circuit structure, described first analog signal processing circuit comprises the first resistance R1 to the 6th resistance R6, the first operational amplifier Q1, the second operational amplifier Q2, first electric capacity C1, the second electric capacity C2, the first diode D1, first signal output part T1, the first analog signal processing chip U1, described first analog signal processing chip U1 comprises first interface to the 8th interface, 5th input end of described signal processing module meets the second resistance R2 after the second fuse F2, ground connection after the second resistance R2,5th input end of described signal processing module also connects the inverting input of the first operational amplifier Q1 after the second fuse F2 and the first resistance R1, the output terminal of the first operational amplifier Q1 connects the first interface of the first analog signal processing chip U1 after the 4th resistance R4, normal phase input end ground connection after the 3rd resistance R3 of described first operational amplifier Q1, the first parallel circuit that described first diode D1 and the first electric capacity C1 forms is parallel to inverting input and the output terminal of the first operational amplifier Q1, connects the inverting input of a termination first operational amplifier Q1 of the negative electrode of the first diode D1 in described first parallel circuit, 3rd interface of described first analog signal processing chip U1 connects the inverting input of the first operational amplifier Q1, 6th interface of described first analog signal processing chip U1 connects the inverting input of the second operational amplifier Q2, described second electric capacity C2 and the 5th resistance R5 forms the second parallel circuit, the direction input end of one termination second operational amplifier Q2 of the second parallel circuit, the other end connects the output terminal of the second operational amplifier Q2 after the 6th resistance R6, the output terminal of described second operational amplifier Q2 meets the first signal output part T1 after the 6th resistance R6, the normal phase input end of described second operational amplifier Q2 connects the 5th input end of the first analog signal processing chip U1, and this positive input end grounding, second interface of described first analog signal processing chip U1 connects positive pole input voltage, the 4th interfacing ground.
Simulating signal inputs to the first analog signal processing circuit through the 5th input end of signal processing module, described simulating signal exports to the first analog signal processing chip U1 after the first operational amplifier Q1 in the first analog signal processing circuit, first operational amplifier Q1 and the first resistance R1 and the 3rd resistance R3 forms negative feedback amplifier circuit, has amplification to simulating signal.Described first analog signal processing chip U1 uses linear optical coupling HCNR201 chip.Described simulating signal exports to the second operational amplifier Q2 through the 5th interface of the first analog signal processing chip U1, second operational amplifier Q2 plays buffer action and front stage buffer action to simulating signal, namely the second operational amplifier Q2 is as a voltage follower, plays the effect of the buffering to simulating signal, isolation.Simulating signal is exported by the first signal output part T1 after the second operational amplifier Q2 and the 6th resistance R6.
First analog signal processing chip U1 adopts linear optical coupling chip to be for preventing extraneous interference, use optocoupler to carry out isolation mode analog signal and there is good effect, and the transmission degree of accuracy shrinkage temperature impact of general optocoupler is comparatively large, so adopt linear optical coupling isolation to meet high-precision requirement.
According to above-mentioned a kind of flow monitor, described first pulse signal circuit comprises the 7th resistance R7 to the 11 resistance R11, 3rd operational amplifier Q3, first pulse signal process chip U2, described first pulse signal process chip U2 comprises first interface to the 8th interface, 8th input end of described signal processing module connects the inverting input of the 3rd operational amplifier Q3 after the 6th fuse F6 and the 7th resistance R7, inverting input ground connection after the 8th resistance R8 of the 3rd operational amplifier Q3, the normal phase input end of described 3rd operational amplifier Q3 connects positive pole input voltage after the 9th resistance R9, this normal phase input end is ground connection after the tenth resistance R10 also, the output terminal of described 3rd operational amplifier Q3 connects the 3rd interface of the first pulse signal process chip U2, and the 4th interface of described first pulse signal process chip U2 connects positive pole input voltage after the 11 resistance R11, described first pulse signal treatment circuit and the second pulse signal treatment circuit have identical circuit structure, described signal processing module also comprises the 3rd electric capacity C3, 12 resistance R12, 13 resistance R13, secondary signal output terminal T2, 3rd signal output part T3, 6th interface of described first pulse signal process chip U2 meets secondary signal output terminal T2, 5th interface of the first pulse signal process chip U2 connects the 6th interface of the first pulse signal process chip U2 after the 3rd electric capacity C3 and the 12 resistance R12, and the 5th interfacing ground of described first pulse signal process chip U2, also after the 3rd electric capacity C3, connect positive pole input voltage, 8th interface of described first pulse signal process chip U2 connects positive pole input voltage and after the 13 resistance R13, connects the 7th interface of the first pulse signal process chip U2, 7th interface of the first pulse signal process chip U2 connects the 3rd signal output part T3.
Pulse signal inputs to the first pulse signal treatment circuit after the 8th input end of signal processing module, pulse signal exports to the first pulse signal process chip U2 after the 3rd operational amplifier Q3 amplifies, and pulse signal exports to the secondary signal output terminal T2 of signal processing module after the transmission of the first pulse signal process chip U2.
First pulse signal process chip U2 adopts EL0630 chip, and this chip is by high speed photo coupling as medium, and exported by the output terminal of the pulse signal received by chip, this chip also plays the buffer action of input and output two-stage.
According to above-mentioned a kind of flow monitor, described first power module comprises the first voltage input end T4, second voltage input end T5,4th electric capacity C4 is to the 7th electric capacity C7,14 resistance R14 to the 15 resistance R15, the second diode D2, the first voltage stabilizing chip U3 and the second voltage stabilizing chip U4, first voltage stabilizing chip U3 comprises first interface to the 6th interface, and the second voltage stabilizing chip U4 comprises first interface to the 4th interface, described first voltage input end T4 connects the anode of the second diode D2, the negative electrode of the second diode D2 connects the first interface of the first voltage stabilizing chip U3, second voltage input end T5 of the first power module connects the first interface of the first voltage stabilizing chip U3, and described 4th electric capacity C4 is parallel to the two ends of the first interface of the first voltage stabilizing chip U3 and second interface of the first voltage stabilizing chip U3, 5th interface of described first voltage stabilizing chip U3 connects second interface of the second voltage stabilizing chip U4, 6th interface of the first voltage stabilizing chip U3 connects the first interface of the second voltage stabilizing chip U4, described 5th electric capacity C5, 6th electric capacity C6, 14 resistance R14 forms the 3rd parallel circuit, 3rd parallel circuit is parallel to the two ends of the 5th interface of the first voltage stabilizing chip U3 and the 6th interface of the first voltage stabilizing chip U3, described 5th electric capacity C5 connects one end ground connection of the 5th interface of the first voltage stabilizing chip U3, another termination positive pole input voltage, described 15 resistance R15 and the 7th electric capacity C7 forms the 4th parallel circuit, 4th parallel circuit is parallel to the two ends of the 5th interface of the second voltage stabilizing chip U4 and the 3rd interface of the second voltage stabilizing chip U4.
Voltage in first power module is inputted by the first voltage input end T4, the first voltage stabilizing chip U3 is exported to after the second diode D2, described voltage is through the 5th electric capacity C5,6th electric capacity C6, exports after the 3rd parallel circuit that the 14 resistance R14 forms after the voltage stabilizing of the second voltage stabilizing chip U4 again.Described first power module namely for voltage stabilizing, for signal processing module provides stable voltage.
According to above-mentioned a kind of flow monitor, described communication module comprises the first communication interface T6 to the 4th communication interface T9, second analog signal processing chip U5, 3rd analog signal processing chip U6, MAX485 chip U7, one 485 communication interface T10, 2 485 communication interface T11, 3 485 communication interface T12, 8th electric capacity C8, 9th electric capacity C9, 16 resistance R16 is to the 18 resistance R18, 3rd diode D3, 4th diode D4, described MAX485 chip U7 comprises first interface to the 8th interface, second communication interface T7 of described communication module connects the 6th interface of MAX485 chip U7, 3rd communication interface T8 of communication module connects the 7th interface of MAX485 chip U7, described 16 resistance R16 and the 17 resistance R17 is parallel to the two ends of the second communication interface T7 of communication module and the 3rd communication interface T8 of communication module, second communication interface T7 of described communication module is successively through the 8th electric capacity C8, the anode of the 3rd diode D3, the 6th interface of MAX485 chip U7 is connect after the negative electrode of the 3rd diode D3, 3rd communication interface T8 of described communication module connects the 7th interface of MAX485 chip U7 successively after the negative electrode of the anode of the 9th electric capacity C9, the 4th diode D4, the 3rd diode D3, described MAX485 chip U7 the 4th interface connect the 6th interface of the second analog signal processing chip U5, second interface of MAX485 chip U7 and the 3rd interface all connect the 7th interface of the second analog signal processing chip U5, 3rd interface of described second analog signal processing chip U5 meets the one 485 communication interface T10, second interface of the second analog signal processing chip U5 meets the 2 485 communication interface T11, the first interface of described MAX485 chip U7 connects the 3rd interface of the 3rd analog signal processing chip U6, 6th interface of described 3rd analog signal processing chip U6 meets the 3 485 communication interface T12.
Described communication module comprises input/output function, input signal is inputted by the one 485 communication interface T10 and the 2 485 communication interface T11, when the one 485 communication interface T10 input low level then MAX485 chip U7 the 7th interface export high level, the 6th interface output low level; Otherwise then the 7th interface output low level, the 6th interface exports high level, and above prerequisite is the 2 485 communication interface T11 input high level.When the 2 485 communication interface T11 input low level, communication module starts output function, input signal is inputted by the second communication interface T7 of communication module and the 3rd communication interface T8, when the level of level higher than the 3rd communication interface T8 of communication module that the second communication interface T7 of communication module inputs, the first interface of MAX485 chip U7 exports high level, otherwise then output low level, above prerequisite is the 2 485 communication interface T11 input low level.When the first interface of MAX485 chip U7 exports high level, then this high level signal is exported by the 3 485 communication interface T12 after the 3rd analog signal processing chip U6.
According to above-mentioned a kind of flow monitor, described flow monitor also comprises display screen, and described display screen is connected with display module.
According to above-mentioned a kind of flow monitor, described control module comprises PIC18F4685 chip, and described control module also comprises a key-press module, and key-press module is provided with some buttons.
According to above-mentioned a kind of flow monitor, described flow monitor also comprises shell, and described shell protection grade can reach IP67, degree of protection IP67, is applicable to the environment exploiting shale gas, and protection flow monitor is not damaged.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (9)
1. a flow monitor, is characterized in that, comprising:
Signal processing module, is passed to control module for connecting the sensor that is external in flow monitor and the current signal that sensor obtains being converted into voltage signal;
Communication module, for connecting the input equipment being external in flow monitor;
Display module, for showing the data of voltage signal;
Control module, for collecting voltage signal, output voltage signal and process data.
2. a kind of flow monitor according to claim 1, is characterized in that, comprising:
First power module, is connected with signal processing module, and for powering for signal processing module, described first power module is also for providing positive pole input voltage.
3. a kind of flow monitor according to claim 1, it is characterized in that, described signal processing module comprises first input end to the 9th input end, the first analog signal processing circuit, second analog signal processing circuit, first pulse signal treatment circuit, the second pulse signal treatment circuit, the first fuse is to the 8th fuse, described first input end to four-input terminal respectively through the first fuse, 3rd fuse, the 5th fuse, connects positive pole input voltage after the 7th fuse; Described 5th input end and the 6th input end connect the first analog signal processing circuit and the second analog signal processing circuit respectively after the second fuse and the 4th fuse, described 8th input end and the 9th input end connect the first pulse signal treatment circuit and the second pulse signal treatment circuit respectively after the 8th fuse and the 6th fuse, described 7th input end grounding; Described signal processing module also comprises pulse signal process chip.
4. a kind of flow monitor according to claim 3, is characterized in that, described first analog signal processing circuit and the second analog signal processing circuit have identical circuit structure, described first analog signal processing circuit comprises the first resistance to the 6th resistance, the first operational amplifier, the second operational amplifier, the first electric capacity, the second electric capacity, the first diode, the first signal output part, the first analog signal processing chip, described first analog signal processing chip comprises first interface to the 8th interface, 5th input end of described signal processing module connects the second resistance after the second fuse, ground connection after the second resistance, 5th input end of described signal processing module also connects the inverting input of the first operational amplifier after the second fuse and the first resistance, the output terminal of the first operational amplifier connects the first interface of the first analog signal processing chip after the 4th resistance, normal phase input end ground connection after the 3rd resistance of described first operational amplifier, first parallel circuit of described first diode and the first electric capacity composition is parallel to inverting input and the output terminal of the first operational amplifier, connects the inverting input of termination first operational amplifier of the negative electrode of the first diode in described first parallel circuit, 3rd interface of described first analog signal processing chip connects the inverting input of the first operational amplifier, 6th interface of described first analog signal processing chip connects the inverting input of the second operational amplifier, described second electric capacity and the 5th resistance form the second parallel circuit, the direction input end of one termination second operational amplifier of the second parallel circuit, the other end connects the output terminal of the second operational amplifier after the 6th resistance, the output terminal of described second operational amplifier connects the first signal output part after the 6th resistance, the normal phase input end of described second operational amplifier connects the 5th input end of the first analog signal processing chip, and this positive input end grounding, second interface of described first analog signal processing chip connects positive pole input voltage, the 4th interfacing ground.
5. a kind of flow monitor according to claim 3, it is characterized in that, described first pulse signal treatment circuit comprises the 7th resistance to the 11 resistance, 3rd operational amplifier, first pulse signal process chip, described first pulse signal process chip comprises first interface to the 8th interface, 8th input end of described signal processing module connects the inverting input of the 3rd operational amplifier after the 6th fuse and the 7th resistance, inverting input ground connection after the 8th resistance of the 3rd operational amplifier, the normal phase input end of described 3rd operational amplifier connects positive pole input voltage after the 9th resistance, this normal phase input end is ground connection after the tenth resistance also, the output terminal of described 3rd operational amplifier connects the 3rd interface of the first pulse signal process chip, and the 4th interface of described first pulse signal process chip connects positive pole input voltage after the 11 resistance, described first pulse signal treatment circuit and the second pulse signal treatment circuit have identical circuit structure, described signal processing module also comprises the 3rd electric capacity, 12 resistance, 13 resistance, secondary signal output terminal, 3rd signal output part, 6th interface of described first pulse signal process chip connects secondary signal output terminal, 5th interface of the first pulse signal process chip connects the 6th interface of the first pulse signal process chip after the 3rd electric capacity and the 12 resistance, and the 5th interfacing ground of described first pulse signal process chip, also after the 3rd electric capacity, connect positive pole input voltage, 8th interface of described first pulse signal process chip connects positive pole input voltage and after the 13 resistance, connects the 7th interface of the first pulse signal process chip, 7th interface of the first pulse signal process chip connects the 3rd signal output part.
6. a kind of flow monitor according to claim 3, it is characterized in that, described first power module comprises the first voltage input end, second voltage input end, the 4th electric capacity is to the 7th electric capacity, and the 14 resistance is to the 15 resistance, second diode, first voltage stabilizing chip and the secondth voltage stabilizing chip, the first voltage stabilizing chip comprises first interface to the 6th interface, and the second voltage stabilizing chip comprises first interface to the 4th interface, described first voltage input end connects the anode of the second diode, the negative electrode of the second diode connects the first interface of the first voltage stabilizing chip, second voltage input end of the first power module connects the first interface of the first voltage stabilizing chip, and described 4th Capacitance parallel connection is in the two ends of the second interface of the first interface of the first voltage stabilizing chip and the first voltage stabilizing chip, 5th interface of described first voltage stabilizing chip connects the second interface of the second voltage stabilizing chip, 6th interface of the first voltage stabilizing chip connects the first interface of the second voltage stabilizing chip, described 5th electric capacity, 6th electric capacity, 14 resistance composition the 3rd parallel circuit, 3rd parallel circuit is parallel to the two ends of the 5th interface of the first voltage stabilizing chip and the 6th interface of the first voltage stabilizing chip, described 5th electric capacity connects one end ground connection of the 5th interface of the first voltage stabilizing chip, another termination positive pole input voltage, described 15 resistance and the 7th electric capacity composition the 4th parallel circuit, 4th parallel circuit is parallel to the two ends of the 5th interface of the second voltage stabilizing chip and the 3rd interface of the second voltage stabilizing chip.
7. a kind of flow monitor according to claim 3, it is characterized in that, described communication module comprises first interface to the 4th interface, second analog signal processing chip, 3rd analog signal processing chip, MAX485 chip, one 485 communication interface, 2 485 communication interface, 3 485 communication interface, 8th electric capacity, 9th electric capacity, 16 resistance is to the 18 resistance, 3rd diode, 4th diode, described MAX485 chip comprises first interface to the 8th interface, second interface of described communication module connects the 6th interface of MAX485 chip, 3rd interface of communication module connects the 7th interface of MAX485 chip, described 16 resistance and the 17 resistance are all parallel to the two ends of the second interface of communication module and the 3rd interface of communication module, second interface of described communication module is successively through the 8th electric capacity, the anode of the 3rd diode, the 6th interface of MAX485 chip is connect after the negative electrode of the 3rd diode, 3rd interface of described communication module connects the 7th interface of MAX485 chip successively after the negative electrode of the anode of the 9th electric capacity, the 4th diode, the 3rd diode, described MAX485 chip the 4th interface connect the 6th interface of the second analog signal processing chip, second interface of MAX485 chip and the 3rd interface all connect the 7th interface of the second analog signal processing chip, 3rd interface of described second analog signal processing chip connects the one 485 communication interface, second interface of the second analog signal processing chip connects the 2 485 communication interface, the first interface of described MAX485 chip connects the 3rd interface of the 3rd analog signal processing chip, and the 6th interface of described 3rd analog signal processing chip connects the 3 485 communication interface.
8. a kind of flow monitor according to claim 3, is characterized in that, described flow monitor also comprises display screen, and described display screen is connected with display module.
9. a kind of flow monitor according to claim 8, is characterized in that, described control module comprises PIC18F4685 chip, and described control module also comprises a key-press module, and key-press module is provided with some buttons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510749766.4A CN105403262B (en) | 2015-11-06 | 2015-11-06 | Flow monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510749766.4A CN105403262B (en) | 2015-11-06 | 2015-11-06 | Flow monitor |
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| CN105403262A true CN105403262A (en) | 2016-03-16 |
| CN105403262B CN105403262B (en) | 2021-03-19 |
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| CN201510749766.4A Active CN105403262B (en) | 2015-11-06 | 2015-11-06 | Flow monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643926A (en) * | 2016-09-29 | 2017-05-10 | 广西大学 | Weak magnetic flow monitoring meter |
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| CN2238420Y (en) * | 1996-03-15 | 1996-10-23 | 山西省煤炭工业综合经营总公司 | Automatic recording device for measuring lot water flow |
| CN1668900A (en) * | 2002-06-25 | 2005-09-14 | 流体元件国际公司 | Method and apparatus for validating the accuracy of a flowmeter |
| CN103933641A (en) * | 2014-05-14 | 2014-07-23 | 胡达广 | Capacitor micro-flow detection device |
| CN204269165U (en) * | 2014-11-25 | 2015-04-15 | 苏州市职业大学 | A kind of flow measuring instrument |
| CN205192546U (en) * | 2015-11-06 | 2016-04-27 | 宁波长壁流体动力科技有限公司 | Flow monitor |
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| CN1062207A (en) * | 1991-12-26 | 1992-06-24 | 四川久大盐业(集团)公司 | Anti-corrosion electric transmitted-high pressure flow meter |
| CN2238420Y (en) * | 1996-03-15 | 1996-10-23 | 山西省煤炭工业综合经营总公司 | Automatic recording device for measuring lot water flow |
| CN1668900A (en) * | 2002-06-25 | 2005-09-14 | 流体元件国际公司 | Method and apparatus for validating the accuracy of a flowmeter |
| CN103933641A (en) * | 2014-05-14 | 2014-07-23 | 胡达广 | Capacitor micro-flow detection device |
| CN204269165U (en) * | 2014-11-25 | 2015-04-15 | 苏州市职业大学 | A kind of flow measuring instrument |
| CN205192546U (en) * | 2015-11-06 | 2016-04-27 | 宁波长壁流体动力科技有限公司 | Flow monitor |
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| CN106643926A (en) * | 2016-09-29 | 2017-05-10 | 广西大学 | Weak magnetic flow monitoring meter |
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| CN105403262B (en) | 2021-03-19 |
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