CN202599600U

CN202599600U - Fluid pipeline pressure measuring and recording instrument

Info

Publication number: CN202599600U
Application number: CN 201220289175
Authority: CN
Inventors: 刘均; 刘霞; 邹彦艳; 殷海双; 宋金波; 张华�
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2012-06-19
Filing date: 2012-06-19
Publication date: 2012-12-12
Anticipated expiration: 2022-06-19

Abstract

A fluid pipeline pressure measuring and recording instrument mainly solves the problems that existing pressure measuring instruments are single in function, and do not have the wireless communication function and the storage function of a universal serial bus (USB) flash disk. The fluid pipeline pressure measuring and recording instrument is characterized by further comprising a recommend standard 232 (RS232) communication module, a USB data storage module, a 32-kilobyte data storage circuit and a decoding and clock module, wherein the data input/output end of the RS232 communication module is connected with the communication data bidirectional input/output (I/O) port of a central processing module, the input end of the 32-kilobyte data storage circuit is connected with the output end of a central control module, and the USB data storage module and the decoding and clock module are respectively connected with the corresponding bidirectional I/O ports of the central control module. On the basis of traditional measuring instruments, the fluid pipeline pressure measuring and recording instrument has the wireless communication function and the storage function of the USB flash disk.

Description

A kind of fluid line pressure survey and registering instrument

Technical field

The utility model relates to a kind of device that can measure and write down its pipeline pressure in the fluid line that is installed on.

Background technology

At present; The pressure survey and the registering instrument that are installed on the fluid line have a lot, but function singlenesses does not basically all have the function of radio communication and USB flash disk storage; Their great majority require the survey crew reading of data of reaching the spot; And can not feed back to remote terminal to the force value of measuring and note timely, and can not judge fast for the appearance of fault like this, cause extra loss.

Summary of the invention

In order to solve the prior art problem that provides in the background technology; The utility model provides a kind of instrument that is used to measure and write down the fluid pipeline pressure, and this kind pipeline pressure measuring instrument has the multi-functional pressure registering instrument that functions such as realizing pipeline pressure measurement, liquid crystal display, curve printing, USB flash disk storage, radio communication and warning is integrated in one.

The technical scheme of the utility model is: pressure survey of this kind fluid line and registering instrument; Comprise the central processing module, LCD MODULE, Keysheet module, print module and some pressure detection modules and the power module that are made up of single-chip microcomputer, it is characterized in that: said fluid line pressure survey and registering instrument also comprise RS232 communication module, usb data memory module, 32K data-carrier store circuit, decoding and clock module; Wherein, the data input/output terminal of said RS232 communication module is connected with the two-way I/O mouth of the communication data of central processing module; The input end of said 32K data-carrier store circuit is connected to the output terminal of central control module, said usb data memory module and decoding clock module respectively with central control module on corresponding two-way I/O mouth be connected.

The utlity model has following beneficial effect: pressure survey of this kind fluid line and registering instrument are made up of power module, pressure detection module, RS232 communication module, LCD MODULE, Keysheet module, print module, usb data memory module, 32K data-carrier store circuit, decoding clock module, central control module.This instrument is gathered the pressure signal of pressure transducer; Send into instrumentation amplifier and be amplified to the 1-3V voltage signal; Send into the embedded analog to digital converter of single-chip microcomputer again and convert digital signal into; LCD MODULE will show on-the-spot each road pressure information in real time, not only can use the mode of numerical value to monitor pipeline hydrodynamic pressure information, force of impression curve as required with the mode of oscillogram; Simultaneously can also through USB interface with acquisition data storage to USB flash disk, memory capacity is big; And can pass to host computer to the data of gathering through wireless mode or wired mode and carry out statistical study; Each function all shows with menu-style, selects with button.

Description of drawings:

The power circuit diagram that Fig. 1 adopts when being the utility model practical implementation.

The pressure detection circuit figure that Fig. 2 adopts when being the utility model practical implementation.

The single chip machine controlling circuit figure that Fig. 3 adopts when being the utility model practical implementation.

The liquid crystal display circuit figure that Fig. 4 adopts when being the utility model practical implementation.

Decoding that Fig. 5 adopts when being the utility model practical implementation and clock circuit diagram.

The 32K data-carrier store circuit diagram that Fig. 6 adopts when being the utility model practical implementation.

The USB memory circuit figure that Fig. 7 adopts when being the utility model practical implementation.

RS232 interface that Fig. 8 adopts when being the utility model practical implementation and wireless communication interface circuit figure.

The printer interface circuit that Fig. 9 adopts when being the utility model practical implementation.

The keyboard processing module figure that Figure 10 adopts when being the utility model practical implementation.

Figure 11 is the structural representation of the utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is described further:

By shown in Figure 11; Pressure survey of this kind fluid line and registering instrument; Comprise the central processing module, LCD MODULE, Keysheet module, print module and some pressure detection modules and the power module that are made up of single-chip microcomputer, it is characterized in that: said fluid line pressure survey and registering instrument also comprise RS232 communication module, usb data memory module, 32K data-carrier store circuit, decoding and clock module; Wherein, the data input/output terminal of said RS232 communication module is connected with the two-way I/O mouth of the communication data of central processing module; The input end of said 32K data-carrier store circuit is connected to the output terminal of central control module, said usb data memory module and decoding clock module respectively with central control module on corresponding two-way I/O mouth be connected.Power module provides stable power to this device.

The power circuit diagram that Fig. 1 adopts when being the utility model practical implementation.Power circuit is by two three-terminal voltage-stabilizing chip U2 (LM7805) and U3 (AS1117), resistance R 46, R47, and capacitor C 6, C7, C8, C16, C17, light emitting diode D5, D6 and socket J2 form.Through J2 access+24V ,+12V ,-12V ,+5V power supply ,+5V power supply connect the end of capacitor C 6 (100uf) and C7; The other end ground connection of C6, C7; In order to carry out filtering, 6 pins of J2 connect the Vin pin of U2, carry out the stable of voltage; U2+the 5V power supply connects the Vin pin of U3, the Vout pin output 3V voltage of U3.Wherein C8 is a decoupling capacitor, and R47 and D5 are the normal indicating circuit of 5V burning voltage, and R46 and D6 are the normal indicating circuit of 3V burning voltage.

The pressure detection circuit figure that Fig. 2 adopts when being the utility model practical implementation.Pressure detection circuit adopts 4 amplifiers among the integrated transporting discharging U1 (LM324) to constitute 3 grades of appearance and uses amplifying circuit; The signal input part 3 of U1A through resistance R 1 be connected to the signal input part 12 of U1D, the signal input part 2 of U1A is connected to the signal input part 13 of U1D; The output terminal 1 of U1A is connected to the signal input part 6 of U1B through R5; The signal output part 14 of U1D is connected to the signal input part 5 of U1B; The signal output part 7 of U1B is connected to the signal input part 9 of U1C, and the signal input part 10 of U1C is through R9 ground connection.Wherein U1A and U1D two amplifiers are formed prime amplifier, and prime amplifier provides high input impedance, low noise and gain, and R14 can change gain.U1B is a differential amplifier, and differential amplifier suppresses common-mode noise, and U1C is three grades of amplifications.J1 is the pressure transducer current input terminal, converts voltage into through resistance and sends into 3 grades of appearance and use amplifying circuit, converts the 0-3V voltage signal into.Two diodes of D1 and D2 carry out overvoltage protection.

The single chip machine controlling circuit figure that Fig. 3 adopts when being the utility model practical implementation.Controller circuitry has adopted U4 (C8051F020) for the control core, and by resistance R 4, R11, capacitor C 9 powers on and the button reset circuit with button S1 formation, by C18 and C10 internal reference voltage is carried out filtering, and wherein J13, J14, J15 are short circuit.11.0592MHZ is provided crystal oscillator for single-chip microcomputer U4 by Y1 crystal oscillator and capacitor C 19, C20.The pin 1-4 of U4 sends into the JATG circuit.U4 pin 65-72 is that system data is the address bus time-sharing multiplex with low 8, and U4 pin 73-80 is that system high 8 is address bus.It mainly links to each other with pressure detection module, RS232 communication module, LCD MODULE, Keysheet module, print module, usb data memory module, 32K data-carrier store circuit, decoding clock module.

The liquid crystal display circuit figure that Fig. 4 adopts when being the utility model practical implementation.The LCD MODULE circuit is the interface circuit of SED1335320*240 lattice lcd display, and wherein J3 is 20 pin sockets, inserts LCD, and resistance R 13 provides the LCD backlight power supply with diode D4, and resistance R 15 is used to regulate LCD backlight.The 1-6 pin correspondence of S4 is connected to the P30-P35 pin of U4, and the corresponding respectively P50-P57 pin that is connected to U4 of the 1-8 pin of S3 makes single-chip microcomputer control toggle switch S3, S4.

Decoding that Fig. 5 adopts when being the utility model practical implementation and clock circuit.Decoding and clock circuit mainly are made up of U7 (74LS138) and U8 (DS12887).The

78,79,80 of U4 is connected with the

1,2,3 of U7, and it is deciphered, and obtains 8 chip selection signals to select different peripheral hardwares; Wherein 13 pins of U7 pin 12 and U8 link to each other, as the chip selection signal of clock chip U8; U7 pin 7 links to each other through 4 pins of diode and U9, as the chip selection signal of USB read-write chip U9; R23 and D23 are used for the indication of clock chip U9 duty.

The 32K data-carrier store circuit that Fig. 6 adopts when being the utility model practical implementation.32K data-carrier store circuit mainly is made up of U6 (62256).Pin 73 by U4 provides chip selection signal for U6; The

22,27 of

U4 pin

91,90 and U4 is connected to U4 provides read-write;

U4 pin

11,12,13,15,16,17,18,19 connecting system data buss,

U4 pin

10,9,8,7,6,5,4,3,25,24,21,23,2,26,1 connecting system data bus.

The USB memory circuit that Fig. 7 adopts when being the utility model practical implementation.Usb data memory module circuit mainly is made up of U9 (SL811HS); J4 is a USB interface, and Y2, C21 and C22 are the crystal oscillating circuit input end of U9; R26 constitutes electrification reset by pull-up resistor; The chip selection signal Y7 that is provided by U7 provides chip selection signal through inverter ic IB to U9, and U9 pin 10 is connected with inverter ic 1A sends into U4 pin 48, adopts interrupt mode to carry out the USB flash disk read-write; The

21,27,28,29,31,32,33,39,42 of U9 is received on the data bus, transmits data with single-chip microcomputer U4.

RS232 interface and wireless communication interface circuit that Fig. 8 adopts when being the utility model practical implementation.RS232 and RFDC circuit are by level transferring chip U11 (SP3223), and capacitor C 11, C12, C13, C14, C15, C24 and two DB9 plug J10, J11 form.The pin 59 of U1, pin 60 and pin 61, pin 62 provide the two-way serial data to send and receiving end; Wherein J10 connects host computer; J11 connects the wireless transmission receiver module, and capacitor C 11, C12 are used for internal electric source and boost, and capacitor C 13, C14, C15, C24 are filter capacitor.Wherein J6, J7, J8, J9 are short circuit.

The printer interface circuit that Fig. 9 adopts when being the utility model practical implementation.The print module circuit is that dot-matrix printer provides interface circuit; RP2 is 8 pull-up resistors (exclusion), and J12 is 12 pin sockets, inserts dot-matrix printer; 10,11,12 pins of J12 are connected to P10, P11, the P12 pin of U4, make the U4 printer control.

The keyboard processing module that Figure 10 adopts when being the utility model practical implementation.Keyboard processing module circuit is mainly managed by serial keyboard display chip U10 (HD7279); For U10 clock signal, chip selection signal are provided by U4 pin 31, pin 34, U10 pin 8 links to each other with U4 pin 30, is the keyboard data input; U4 pin 49 provides look-at-me for U10; R32 and C23 are that U10 provides oscillator signal, and R33-R40 is a current-limiting resistance, and R41-R43 is a pull-up resistor.

The utility model is carried not only can also monitor pipeline hydrodynamic pressure information with the mode of oscillogram with the mode of numerical value; Can realize RS232 communication and radio communication far away; Can with the information that collects with the stored in form of file in USB flash disk, memory capacity is big; Can print the data message of collection and the time of collection with the mode of figure; The all functions of this registering instrument can be carried out function selecting through button according to the menu on the LCD.

Claims

1. fluid line pressure survey and registering instrument; Comprise the central processing module, LCD MODULE, Keysheet module, print module and some pressure detection modules and the power module that are made up of single-chip microcomputer, it is characterized in that: said fluid line pressure survey and registering instrument also comprise RS232 communication module, usb data memory module, 32K data-carrier store circuit, decoding and clock module; Wherein, the data input/output terminal of said RS232 communication module is connected with the two-way I/O mouth of the communication data of central processing module; The input end of said 32K data-carrier store circuit is connected to the output terminal of central control module, said usb data memory module and decoding clock module respectively with central control module on corresponding two-way I/O mouth be connected.