CN2368083Y

CN2368083Y - Collecting and processing device for dust data

Info

Publication number: CN2368083Y
Application number: CN98250932U
Authority: CN
Inventors: 张晶; 金毅; 朱一川; 周文刚; 杜玉刚; 张芳翰; 周群英
Original assignee: BEIJING NEW TECHNOLOGY APPLICATION INST
Current assignee: BEIJING NEW TECHNOLOGY APPLICATION INST
Priority date: 1998-12-25
Filing date: 1998-12-25
Publication date: 2000-03-08
Anticipated expiration: 2008-12-25

Abstract

The utility model provides a microcomputer dust processor of data acquisition, which matches with a P-5 type digital dust instrument to achieve automatic recording and data processing automation to upgrade the existing P-5 type digital dust instrument into an intelligent detection device of quality and concentration. The utility model takes a 16-bit single chip computer as the core, the 16-bit single chip computer is externally connected with a program memory unit and two data memory unit, and a peripheral circuit comprises a keyboard interface circuit, an output interface circuit of a printer, a liquid crystal display circuit, a chip selecting circuit, a signal input circuit, a power control circuit and an acoustic-optical alarm circuit; besides, nickel-hydrogen batteries with a high capacity are arranged in a casing so as to supply power for the utility model and the digital dust instrument.

Description

The dust data collection processor

The utility model relates to a kind of dust concentration data collection processor.

At present, existing P-5 type numeral dust instrument is a kind of quick dust gauge of superior performance, and is higher in the China market occupation rate, but this instrument is when measuring dust concentration, and displayed value is CPM (per minute step-by-step counting), i.e. relative mass concentration.In order to obtain the mass concentration of national Specification, then need the CPM value record on notebook, make artificial data through computing machine again and handle.

The purpose of this utility model is to provide a kind of micro computer dust data collection processor, with the supporting use of P-5 type numeral dust instrument, can realize record and datamation automatically, makes existing P-5 type instrument upgrade to intelligentized mass concentration detecting instrument.

For achieving the above object, the technical solution adopted in the utility model is:

The control core of its wiring board is 16 single-chip microcomputers, Add-In storer EPROM and data-carrier store RAM, and single-chip microcomputer carries out addressing by 16 bit multiplexed addresses and 8 bit data bus to EPROM and RAM;

The peripheral circuit of single-chip microcomputer is a keyboard interface circuit, printer output interface circuit and LCD MODULE are directly received on the single-chip data bus, chip select circuit is directly received on the high 4 bit address lines of single-chip microcomputer, power control circuit is connected with two high speed outputs of single-chip microcomputer with sound light alarming circuit, and a hsi port of single-chip microcomputer is a signal input;

Its software systems comprise master routine, clock interrupt service routine, keyboard interrupt service routine, and data processing section adopts the adding of three byte floating numbers, subtracts, multiplication and division subroutine and various three byte function subprograms, adopts the menu mode means of man-machine;

Simultaneously battery is set also in the utility model, externally both sides also are equipped with and are buckled.

Because the utility model adopts 16 Single-chip Controlling storeies and interface circuit, and employing clock interrupt service routine and keyboard interrupt service routine, can store 2000 data, and can monitor in continuous 8 hours, also can intermittently sample, thereby satisfy the requirement of weighted mean concentration (TWA) by setting-up time.When monitoring at the scene, can read various data, connect mini-printer, printablely go out tables of data, dust concentration change curve, dust relative mass concentration R (CPM), mass concentration C (mg/m by LCDs ³) and 6 item numbers according to result: 1, arithmetic mean (AVE) 2, time weighted average (TWA) 3, geometric standard deviation (SD) 4, geometrical mean (cm) 5, maximal value (MAX) 6, minimum value (MIN).

Because the utility model internal battery, the outside buckles, and can easily be linked to be supporting use with P-5 dust instrument.The battery case of dust instrument being unloaded, the utility model is directly installed on the original battery case position of dust instrument, not only is power supply itself, also gives the power supply of P-5 dust instrument simultaneously.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is a schematic block circuit diagram of the present utility model;

Accompanying drawing 3 is a software flow pattern of the present utility model;

Below in conjunction with accompanying drawing embodiment of the present utility model is illustrated.

As shown in Figure 1, the utility model has casing 1, in the Ni-MH battery 2 of high power capacity is set, wiring board 3, both sides external is equipped with and buckles 4, the casing front is a panel 5.

As shown in Figure 2, the 80C196 single-chip microcomputer is the control core, use 16 bit multiplexed addresses and 8 bit data bus AD0～AD15, external 16K EPROM27128 program storage and two 8K RAM6264 data-carrier stores are carried out addressing, use latch 74373 to latch the least-significant byte address of AD0～AD7 so that the address on the bus is separated with data-signal.High four AD12～AD15 of bus connect the chip select circuit that decoding and logical circuit are formed as the chip select address line, send the software entry address of chip selection signal and control signal and definite each unit for each interface circuit.

Dust instrument output step-by-step counting is by hsi port HSI ₁Enter single-chip microcomputer, do computing, can draw relative mass concentration (CPM), the K value according to presetting calculates mass concentration (mg/m again ³).And also can calculate other numerical value.

The single-chip microcomputer high-speed output hso ₀Export high and low level, pilot relay carries out power supply control, can stop to be the power supply of dust instrument when the inoperation of dust instrument; High-speed output hso ₁Export high and low level, amplify the light emitting diode and the hummer of rear drive sound light alarming circuit, when dust concentration exceeds standard, send warning.

The keyboard interface circuit of 20 keys is made up of programmable keyboard/display interface chip 8279 and code translator, and liquid crystal is 4 * 20 character point configuration Liquid Crystal Modules, and keyboard is formed the man-machine conversation passage with liquid crystal display, directly receives on the single-chip data bus.

As shown in Figure 3, because the utility model all operations is all undertaken by Keyboard Control, the interrupt service routine of keyboard constitutes the main body of this software.All control commands of sending by keyboard by 8279 to single-chip microcomputer send interrupt application after, enter the keyboard interrupt service routine, adopt the menu mode means of man-machine, according to the menu prompt that shows on the liquid crystal display, select corresponding, just can finish each control function.

Claims

1, a kind of dust data collection processor comprises casing (1), wiring board (3), and panel (5) is characterized in that:

Wiring board (3) control core is 16 single-chip microcomputers, Add-In storer EPROM and data-carrier store RAM, and single-chip microcomputer carries out addressing by 16 bit multiplexed addresses and 8 bit data bus to EPROM and RAM;

The peripheral circuit of single-chip microcomputer is that keyboard interface circuit, printer output interface circuit and LCD MODULE are directly received on the single-chip data bus, chip select circuit is directly received on the high 4 bit address lines of single-chip microcomputer, and power control circuit is connected two high-speed output hsos of single-chip microcomputer with sound light alarming circuit ₀And HSO ₁, a hsi port HSI ₁Be signal input;

Software systems comprise master routine, clock interrupt service routine, keyboard interrupt service routine, and data processing section adopts the adding of three byte floating numbers, subtracts, multiplication and division subroutine and various three byte function subprograms, adopts the menu mode means of man-machine;

Battery (2) also is set in casing (1) is this instrument and the power supply of dust instrument.

2, data collection processor according to claim 1, the single-chip microcomputer that it is characterized in that wiring board (3) is 80C196, and program storage is 16K EPROM27128, and data-carrier store is two 8K RAM6264.

3, data collection processor according to claim 2 is characterized in that also using latch on the wiring board (3), latchs the least-significant byte address of single-chip microcomputer.

4, data collection processor according to claim 3 is characterized in that the keyboard interface circuit of wiring board (3) is made up of programmable keyboard/display interface chip 8279 and code translator, and liquid crystal is 4 * 20 character point configuration Liquid Crystal Modules.

5, data collection processor according to claim 4 is characterized in that casing (1) both sides are equipped with to buckle (4) and dust instrument and be connected as a single entity.