CN87204155U - Monolithic microcomputerized controller for concrete mixing station - Google Patents
Monolithic microcomputerized controller for concrete mixing station Download PDFInfo
- Publication number
- CN87204155U CN87204155U CN 87204155 CN87204155U CN87204155U CN 87204155 U CN87204155 U CN 87204155U CN 87204155 CN87204155 CN 87204155 CN 87204155 U CN87204155 U CN 87204155U CN 87204155 U CN87204155 U CN 87204155U
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- CN
- China
- Prior art keywords
- chip
- chip microcomputer
- port
- concrete mixing
- analog
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Abstract
The utility model relates to a single chip microcomputer control device which is particularly suitable for a concrete mixing station of 25-100m minus [3]/h. When the utility model is used, the production processes of the concrete mixing station can be automatically controlled; the analogue quantity conversion of the material weighing adopts a double byte D/A chip, so the A/D conversion is accomplished; a drive plate and a band switch is used to form a hardware encode, so the weighing set value is input in the mode of the hardware encode. The utility model has the advantages of strong anti-interference ability, high reliability and low cost.
Description
The utility model is the control device about concrete mixer tool production process.Especially for 25-100M
3The production process control device of the various concrete mixing stations of/h.
A kind of and the supporting measure control operating desk of HZ25 type moving concrete mixing station, adopt analog device to constitute control device, it can realize that the weighing value presets, but still cumbersome, main is can't realize the closed-loop control of measuring, so can't control the dynamic error of metering effectively.
What Tongji University developed makes the one board microcomputer control system that central processing unit constitutes with Z80-CPU, can be used for the production process control of concrete mixing station, but the circuit system complexity, troublesome poeration, antijamming capability is relatively poor, and equipment manufacturing cost is very high, is difficult to promote the use of on mixing plant.
The utility model purpose is to provide a kind of control device that can overcome the one chip microcomputer of above-mentioned deficiency.
Its solution is to adopt integrated level one chip microcomputer higher, that be applicable to Industry Control to constitute control device.
Another characteristics of this device are to adopt high-resolution D/A chip, in conjunction with software, constitute the analog-digital converter of double byte.
The 3rd characteristics of this device are to constitute hardware encoding with dial and band switch.
The utlity model has that circuit is simple, antijamming capability is strong, reliability is high, easy to operate, low cost and other advantages.
Accompanying drawing is two embodiment of this device.
Accompanying drawing 1, the control device that adopts the MCS-48 family chip to constitute, the capacity that is applicable to is at 50M
3The concrete mixing station that/h is following.
The core of device is by the one chip microcomputer chip U1 of the Add-In memory of MCS-48 series, EPROMU2, and expansion interface U3 constitutes.The connection of each control signal explanation in the drawings.Expansion I/O can adopt 8155 with chip U3, and it provides three programmable parallel interface P
A, P
B, P
CWith the RAM of 256 bytes, provide one 14 Timer simultaneously.When the metering of water in the batching adopts timing or count pulse to control, can be used for carrying out the metering of water.
High-resolution D/A chip U
7With operational amplifier U
8, U
9Constitute an AD conversion unit, it is as an I/O, by I/O decoder U5 addressing.U7 inside has double buffering input register and auxiliary control line, and by byte select lines BYTEI/BYTE2, the data that U1 is produced are sent to respectively in interior high byte of U7 or the low byte register and go.In the actual weighing process, an analog quantity voltage V who is sampled
iDeliver to the input (negative terminal) of comparator U9, make D/A conversion unit produce an analog quantity V with software
cDeliver to another input (anode) of comparator U9.If V
c＞V
i, then the output of U9 is a high level, on the contrary V
c＜V
iThen the output of U9 is a low level.Detection input To(or the P27 of U1 delivered in the output of U9), use successive approximation approach like this, finally find a value V
c=V
iThen computer-internal and this analog quantity V
cCorresponding digital quantity is V
iTransformation result.
The preset value of each material metering (or claiming setting value) is to line up matrix with four 0-9 dials, links the P1 mouth of U1.Wherein a slice dial as the prescription number, its excess-three sheet as the setting value or other data.With low three of the Pc mouth of interface chip U3, as the coding input of band switch BK, represent the code of input parameter with this group coding, 1 the time, it is encoded to 000, represents cement, is encoded to 001 in the time of 2, represents gravelstone etc. as band switch.As use tri-bit encoding, represent eight kinds of parameters with three or eight grades of band switches.Prescription dial as each prescription number has eight kinds of material (as cement, gravelstone, middle stone, fine sand, coarse sand, cinder powder, water, additive), three bit digital dials and band switch BK can constitute a kind of input of each material setting value of prescription.After each data is dialled, press the button A that is connected the U3PA4 mouth, data are just read in the computer and are gone.And by prescription number and item number, be stored among the RAM of appointment, use in order to when operation.
Parameter code, dial quantity can specifically determine according to batching kind, prescription quantity, range of set value, as the kind of preparing burden less than eight kinds, remaining other parameter that can be used as, as mixing time, cycle-index etc.
In this embodiment, all the other mouthfuls of U3 line all be used for importing, and another expansion I/O U10 can adopt 8243 chips; As output.
Accompanying drawing 2 adopts the control device of MCS-51 family chip, is applicable to capacity 50～100m
3The concrete mixing station of/h.
This embodiment adopts the chip U1 of the external ROM of MCS-51 series, outside EPROMU2a, U2b, and expansion mouthful U3 constitutes the core of control device.
The external ROM single-chip microcomputer of MCS-51 series can expand to 64K at most, the memory under program of byte, and present embodiment expands to 8K, as needs, can also increase the U2 chip.
Under the prerequisite that the quantity of data memory can meet the demands, an expansion mouthful U3 still can be with 8155.If the metering of water still is regularly or the count pulse mode, utilize 8155 the Timer or T0, the T1 of U1 inside, Timer all can.The latter is 16 a counter, can measure bigger scope and reach higher precision.
Can obtain the quantity of input and output control line as required with two (or more than two) U10 expansion mouths.The P1 mouth of every available U1 comes the sheet choosing.
The structure of A/D unit and operation principle are with embodiment 1.
The setting value of batching and other control parameters, still form hardware encoding with dial, band switch and button, be input in the computer by U10 mouth line and go, concrete structure, according to the requirement of range of set value, prescription quantity, batching kind and other control parameters, determine the quantity of dial and the pattern of band switch.
Claims (3)
1, a kind of concrete mixing station one chip microcomputer control device, partly form by one chip microcomputer, external program memory, analog-digital converter, I/O expansion interface, parameter input circuit, input and output buffer circuit, self check warning and demonstration print circuit etc., it is characterized in that:
1. have one chip microcomputer and make three bus-organizations of central processing unit, parts such as external program memory, analog-digital converter, I/O expansion interface and demonstration print circuit all are connected with one chip microcomputer by data/address bus, address bus and control bus;
2. have that high-resolution digital-to-analogue conversion (D/A) chip constitutes, can import the nearly double byte analog-digital converter (A/D) of 8 separate analogue amounts, it is by D/A chip U
7, operational amplifier U
8, U
9With analog channel selector switch (U
11, U
12) form analog quantity V to be converted
i(i=1～8) by analog channel selector switch input a/d converter, the channel address of selector switch is from one-chip computer U
1I/O port P
1, the data wire of A/D converter is by latch U
6With one-chip computer U
1I/O port P
0Be connected, its gating control signal is from address decoder U
5
3. have and one-chip computer U
1I/O port or the concrete parameter input coding circuit that constitutes of the decimal system dial switch matrix B P that directly is connected of I/O ECP Extended Capabilities Port and band switch BK, select parameter by band switch BK, by dial matrix B P input parameter.
2, by the described concrete mixing station one chip microcomputer of claim 1 control device, it is characterized in that described one chip microcomputer U
1For model in MCS-48 and the MCS-51 series is 8035,8039,8040,8031,8032,80C31,80C252,8344 monolithic integrated circuit chip.
3, by the described concrete mixing station one chip microcomputer of claim 1 control device, it is characterized in that described one chip microcomputer U
1Be 8 one-chip computers of Add-In memory, it is connected to erasable external program memory (EPROM), the direct and one-chip computer U of 8 position datawires of this program storage
1I/O port P
0Be connected, its least-significant byte address wire is by address latch U
4With one-chip computer U
1I/O port P
0Be connected, remaining high address line then directly is connected one-chip computer U
1I/O port P
2On, the operation of this program storage is by one-chip computer U
1The PSEN signal controlling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204155 CN87204155U (en) | 1987-04-23 | 1987-04-23 | Monolithic microcomputerized controller for concrete mixing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204155 CN87204155U (en) | 1987-04-23 | 1987-04-23 | Monolithic microcomputerized controller for concrete mixing station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87204155U true CN87204155U (en) | 1988-11-02 |
Family
ID=4820069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87204155 Expired - Lifetime CN87204155U (en) | 1987-04-23 | 1987-04-23 | Monolithic microcomputerized controller for concrete mixing station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87204155U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079591A1 (en) * | 2009-12-31 | 2011-07-07 | 湖南三一智能控制设备有限公司 | Control system for a mortar truck, mortar truck using same and control method thereof |
| CN110138294A (en) * | 2019-06-25 | 2019-08-16 | 国网山东省电力公司临朐县供电公司 | A kind of automatic magnetic exciting control device based on DSP |
| CN110355875A (en) * | 2019-06-26 | 2019-10-22 | 北京市政建设集团有限责任公司 | One kind can precisely measure intelligent solidification soil vibration mixing apparatus and method |
-
1987
- 1987-04-23 CN CN 87204155 patent/CN87204155U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079591A1 (en) * | 2009-12-31 | 2011-07-07 | 湖南三一智能控制设备有限公司 | Control system for a mortar truck, mortar truck using same and control method thereof |
| CN110138294A (en) * | 2019-06-25 | 2019-08-16 | 国网山东省电力公司临朐县供电公司 | A kind of automatic magnetic exciting control device based on DSP |
| CN110355875A (en) * | 2019-06-26 | 2019-10-22 | 北京市政建设集团有限责任公司 | One kind can precisely measure intelligent solidification soil vibration mixing apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |