CN207050789U - A kind of pulse type liquid flow integrator - Google Patents

Abstract

The utility model discloses a kind of pulse type liquid flow integrator, mainly include：Power module, core processor, pulse signal processing module, temperature collect module, LCD liquid crystal display screen, keyboard circuit, RS485 interface circuits and Zigbee wireless communication modules.Wherein core processor is connected with power module, pulse signal processing module, temperature collect module, LCD liquid crystal display screen, keyboard circuit, RS485 interface circuits and Zigbee wireless communication modules respectively.The integrating instrument largely uses low power consumption integrated circuit, has low in energy consumption, service life length, small volume, the advantages of reliability is high, while data can store, and also can upload data by wireless and wired two ways, meet accuracy of multiple industries to liquid flow measurement, economy, the requirement of reliability.

Description

A kind of pulse type liquid flow integrator

Technical field

A kind of flow integrator is the utility model is related to, especially a kind of pulse type liquid flow instrument.

Background technology

With the continuous development of Chinese national economy, the application of liquid flow measurement is more and more wider.In modern chemical industry In industry production process, effectively to carry out production operation and control, it is necessary to measure the physical parameter of various media in production process, The flow of wherein liquid is one of frequent parameter for measuring and controlling.Accuracy, economy, reliability and the peace of flow measurement Full property plays an important role to production process.Particularly focusing on saving the current era of the energy and the performance of enterprises, flow measurement Just seem even more important.Because various liquid mediums, such as oil, liquid natural gas and water are all important energy mediums, only Accomplish the accurate measurement to them, can just accomplish " power consumption has number, energy-conservation to have evidence ", make the business accounting of enterprise, production management and Business activities establish science, it is reliable on the basis of, efficiently and effectively carry out management.

With the rapid development of science and technology, especially microelectronics, computer and the communication technology change with rapid changepl. never-ending changes and improvements, with And a large amount of appearance of new material, new technology so that detection technique is with this subject direction of instrument no matter in basic theory, system knot Still in design program, experimental method etc., all there occurs the change of essence for structure.So that substantial amounts of detecting instrument instrument is all Towards digitlization, networking and intelligent direction development, original instrument and meter is difficult to meet production control now if do not improved Needs.

Therefore, for the deficiency of traditional integrating instrument, by many lookup data, with reference to the advantages of various integrating instruments and Shortcoming, design drawing is repeatedly changed, develops this product finally ----pulse type liquid flow integrator.

Utility model content

The utility model provides a kind of pulse type liquid flow accumulation equipment.This integrating instrument can be adopted according to working site The temperature value collected, the pulse signal exported with reference to working site transmitter, instantaneous delivery is calculated and displayed after processing and tires out Product flow.The setting, storage and the display of data on flows and upload of flow parameter can be also completed simultaneously.

The utility model use concrete scheme be：A kind of pulsed flow integrator, including power module, core processing Device, pulse signal processing module, temperature collect module, LCD liquid crystal display screen, keyboard circuit, RS485 interface circuits, Zigbee Wireless communication module.

Described power module provides dc source for system, described core processor respectively with power module, pulse Signal processing module, temperature collect module, LCD liquid crystal display screen, keyboard circuit, RS485 interface circuits and Zigbee are wireless Communication module is connected.The core processor one side return pulse signal and temperature signal, are surveyed by handling, being calculated The instantaneous value and aggregate-value of flow, and real-time results are stored in inside processor, while shown in LCD liquid crystal display screen Come；On the other hand when described flow integrator is connected with host computer, RS485 interface circuits and Zigbee radio communications are passed through Module, information is exchanged with host computer with wired and wireless two ways.

Described pulse signal processing module is connected with core processor, for being divided to high-frequency pulse signal, from And core processor is set to handle received pulse signal.

Described temperature collect module is connected with core processor, and the temperature signal collected is sent to after amplification Core processor, so as to provide temperature value to calculate flow.The temperature collect module includes：Temperature sensor, integrated computation Amplifier IC31, resistance R1, R2, R3, R4, R5, R6, R7, adjustable potentiometer W1, W2 and voltage-stablizer DW.The resistance R1 mono- End be connected with power supply, one end is connected with R2 and DW, and the DW other ends are connected to the ground, and the R2 other ends are connected with W1, the W1 other end and R3 is connected, and W1 is adjustable, and end is connected with IC31 2 ends, and temperature sensor one end is connected with power supply, and the other end is connected with W2, and W2 is another End is connected with R4, and W2 is adjustable, and end is connected with IC31 3 ends, and R5 mono- terminates IC31 6 ends, another termination IC31 2 ends, R6 one end Power supply is connect, 1 end of a termination IC31, the termination powers of R7 mono-, 5 ends of a termination IC31, IC31 6 ends are exported to core processing Device.

Described LCD liquid crystal display screen is connected with core processor, for showing instantaneous delivery and integrated flow.

Described keyboard circuit is connected with core processor, is 4 key stand-alone keypads, for arrange parameter, confirms parameter.

Described RS485 interface circuits are connected with core processor, when the flow integrator is being connected with host computer, Integrated flow and instantaneous delivery are transmitted to host computer in a manner of wired by RS485 interfaces.

Described Zigbee wireless communication modules are connected with core processor, when described flow integrator with host computer When being connected, integrated flow and instantaneous delivery are wirelessly transmitted to host computer by Zigbee wireless communication modules.

Preferably, the core processor uses the MSP430F5438A chips of TI companies.

Preferably, the frequency dividing chip that the pulse signal processing module uses is 74LS393, and the data of use select chip It is 74LS153.

Preferably, the temperature sensor that the temperature collect module uses is AD590.

Preferably, the LCD liquid crystal display screen is using LCD1602.

Preferably, chip is MAX3485 used by the RS485 interface circuits.

Preferably, the Zigbee wireless communication modules using TI companies CC2430 modules.

Compared with prior art, the beneficial effects of the utility model are：In the design of the system circuit, as far as possible using work( Can be relatively strong, the relatively low IC chip of power consumption, circuit is so not only simplified, reduces volume, adds the reliable of system Property, and power consumption is reduced, service life is extended, is easy to work long hours in the place of electricity consumption inconvenience.Meanwhile devise Two kinds of modes to communicate with host computer that line is wireless, it is easy to that the flow information of collection is transferred into host computer under circumstances.

Brief description of the drawings

Fig. 1：Pulse type liquid flow accumulation instrument system forms structure chart；

Fig. 2：Core processor and pulse signal processing module interface circuit figure；

Fig. 3：Core processor and temperature collect module interface circuit figure；

Fig. 4：Core processor and keyboard circuit and LCD liquid crystal display screen interface circuit figure；

Fig. 5：Core processor and RS485 interface circuit figures；

Fig. 6：Core processor and Zigbee wireless communicaltion module access circuit diagrams.

1. power module in figure, 2. core processors, 3. pulse signal processing modules, 4. temperature collect modules, 5.LCD liquid Crystal display screen, 6. keyboard circuits, 7.RS485 interface circuits, 8.Zigbee wireless communication modules.

Embodiment

The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings.

A kind of pulsed flow integrator involved by the utility model, including power module 1, core processor 2, pulse Signal processing module 3, temperature collect module 4, LCD liquid crystal display screen 5, keyboard circuit 6, RS485 interface circuits 7, Zigbee without Line communication module 8.

Wherein, the core processor 2 uses the super low-power consumption microcontroller MSP430F5438A that processor is TI companies, Up to 25MHz system clocks can be connected, while inside carries 256KB memories, fully meet storage program and flow information It is required that, it is not necessary to other external memories, multichannel AD conversion module is internally integrated, data signal can be converted analog signals into, made System need not external AD conversion module, greatly reduce the power consumption of system, reduce the volume of system.

Wherein, pulse signal processing module 3 includes：Countdown circuit and pulse selecting circuit.Wherein pulse frequency division electricity Road 1 data selector 74LS153 is selected using double 4 using double tetrad counter 74LS393, pulse selecting circuit.Such as Fig. 2 Shown, on the one hand 1C0 ends that the pulse signal of reception is directly entered 74LS153 wait as original frequency pulse signal and are selected Export to core processor 2；On the other hand CLK ends in 74LS393 are entered, by QA ends, QB ends, QC after two, four, eight frequency dividings End output, then be connected with 74LS153 1C1 ends, 1C2 ends, 1C3 ends believe as two divided-frequency pulse signal, four divided pulses respectively Number, eight divided pulse signals wait selected output to core processor 2.In addition, 74LS153 A, B end and core processor 2 It is connected, waiting the signal of core processor 2,74LS153's is defeated so as to select one from the pulse signal of four different frequencies Go out to hold Y1 to be connected with core processor 2, by selected output of pulse signal to core processor 2.

Wherein, temperature collect module 4 includes：Temperature sensor, integrated operational amplifier IC31, resistance R1, R2, R3, R4, R5, R6, R7, adjustable potentiometer W1, W2 and voltage-stablizer DW.The temperature sensor uses AD590, the integrated computation amplification Device IC31 uses CA3193.As shown in figure 3, described resistance R1 one end is connected with power supply, one end is connected with R2 and DW, the DW other ends It is connected to the ground, the R2 other ends are connected with W1, and the W1 other end is connected with R3, and W1 is adjustable, and end is connected with IC31 2 ends, TEMP Device one end is connected with power supply, and the other end is connected with W2, and the W2 other ends are connected with R4, and W2 is adjustable, and end is connected with IC31 3 ends, R5 mono- Termination IC31 6 ends, another termination IC31 2 ends, the termination powers of R6 mono-, 1 end of a termination IC31, the termination powers of R7 mono-, one IC31 5 ends are terminated, IC31 6 ends are exported to core processor 2.

After system electrification, the pulse signal received is sent into 74LS393 and carries out 2 frequency dividings, 4 by pulse signal processing module 3 Frequency dividing and 8 scaling down processings, then be sent into four together with original burst signal and select a data selector 74LS153 to wait core processor 2 selections.If original burst signal is less than 500KHz, core processor 2 selects original burst signal, if original burst signal is small In 1MHz, then core processor 2 selects 2 divided pulse signals, if original burst signal is less than 2MHz, core processor 2 selects 4 divided pulse signals are selected, if original pulse is more than 2MHz, core processor 2 selects 8 divided pulse signals.Meanwhile temperature is adopted The AD590 small-signals exported are obtained temperature signal and are sent into core processor 2 by collection module 4 after enhanced processing.

In addition, core processor 2 is set in LCD liquid crystal display screen 5 by keyboard circuit 6 and confirms discharge coefficient, connect Mouth circuit is as shown in Figure 4.

The pulse signal and temperature that core processor 2 receives pulse signal processing module 3 and temperature collect module 4 transmits After signal, following three tasks are completed：

1) calculate：Pulse period and pulse frequency are calculated according to pulse signal, the temperature value of collection is converted into numeral Amount, finally calculate instantaneous delivery and integrated flux with reference to the discharge coefficient set.

2) store and show：Instantaneous delivery and integrated flow are stored in the internal storage of core processor 2, while Shown in LCD liquid crystal display screen 5.The interface circuit of LCD liquid crystal display screen 5 is as shown in Figure 4.

3) data are transmitted：When integrating instrument is connected with host computer by RS485 interface circuits 7 or Zigbee wireless communication modules 8 When connecing, data are uploaded to host computer by core processor 2.The core processor is with RS485 interface circuits as shown in figure 5, institute State core processor and Zigbee wireless communicaltion module access circuits are as shown in Figure 6.

Embodiment of the present utility model is described above.But the utility model is not limited to above-described embodiment, this area skill The various changes that art personnel are carried out in the range of technical solutions of the utility model, all the scope of protection of the utility model it It is interior.

Claims (6)

1. A kind of 1. pulse type liquid flow integrator, it is characterised in that：At power module, core processor, pulse signal Manage module, temperature collect module, LCD liquid crystal display screen, keyboard circuit, RS485 interface circuits, Zigbee wireless communication modules； The core processor and power module, pulse signal processing module, temperature collect module, LCD liquid crystal display screen, keyboard electricity Road, RS485 interface circuits and Zigbee wireless communication modules are connected；The pulse signal processing module and core processor phase Even；The temperature collect module is connected with core processor；The LCD liquid crystal display screen is connected with core processor；The key Disk circuit is connected with core processor；The RS485 interface circuits are connected with core processor；The Zigbee radio communication molds Block is connected with core processor.
2. A kind of 2. pulse type liquid flow integrator according to claim 1, it is characterized in that the core processor uses MSP430F5438A chips.
3. A kind of 3. pulse type liquid flow integrator according to claim 1, it is characterized in that the temperature collect module bag Include：Temperature sensor, integrated operational amplifier IC31, resistance R1, R2, R3, R4, R5, R6, R7, adjustable potentiometer W1, W2 and Voltage-stablizer DW；Described resistance R1 one end is connected with power supply, and one end is connected with the resistance R2 and the voltage-stablizer DW, the voltage stabilizing The device DW other ends are connected to the ground, and the resistance R2 other ends are connected with the adjustable potentiometer W1, the adjustable potentiometer W1's The other end is connected with the resistance R3, the adjustable ends of adjustable potentiometer W1 and the 2 end phases of the integrated operational amplifier IC31 Even, described temperature sensor one end is connected with power supply, and the other end is connected with the adjustable potentiometer W2, the adjustable potentiometer W2 The other end is connected with the resistance R4, the adjustable ends of adjustable potentiometer W2 and the 3 end phases of the integrated operational amplifier IC31 Even, the resistance R5 mono- terminates 6 ends of the integrated operational amplifier IC31, another termination integrated operational amplifier IC31 2 ends, the termination powers of resistance R6 mono-, 1 end of a termination integrated operational amplifier IC31, the resistance R7 mono- terminates Power supply, 5 ends of a termination integrated operational amplifier IC31,6 ends and the core of the integrated operational amplifier IC31 Processor is connected.
4. A kind of 4. pulse type liquid flow integrator according to claim 3, it is characterized in that the temperature sensor uses AD590。
5. A kind of 5. pulse type liquid flow integrator according to claim 1, it is characterized in that the RS485 interface circuits are adopted Chip is MAX3485.
6. A kind of 6. pulse type liquid flow integrator according to claim 1, it is characterized in that the Zigbee radio communications Module is using CC2430 modules.