CN203038126U - Material position control system - Google Patents
Material position control system Download PDFInfo
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- CN203038126U CN203038126U CN 201320039080 CN201320039080U CN203038126U CN 203038126 U CN203038126 U CN 203038126U CN 201320039080 CN201320039080 CN 201320039080 CN 201320039080 U CN201320039080 U CN 201320039080U CN 203038126 U CN203038126 U CN 203038126U
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- electric signal
- material position
- controller
- control system
- difference
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Abstract
The utility model discloses a material position control system. The material position control system comprises a sampling circuit, an electric signal conversion circuit and a controller, wherein the sampling circuit collects a material position signal and transmits the material position signal to the electric signal conversion circuit; the electric signal conversion circuit converts the material position signal into an electric signal; the controller, according to the converted electric signal, acquires a first electric signal difference and a second electric signal difference; and when the first electric signal difference or the second electric signal difference is within a preset work point range of a sensor, the controller maintains an original output state, and when the first electric signal difference or the second electric signal difference is not in the preset work point range of the sensor, and when the difference is positive, the controller outputs a contact material signal, or, when the difference is negative, the controller outputs a disengaging material signal. The control system does not need a fixed work point, and is adaptive to signal drift caused by adherence or adsorption of material and material characteristic changes, and thus an actual application range is expanded; and the control system is novel in structure and is simple and simple and reliable.
Description
Technical field
The utility model relates to the Material control device, relates in particular to a kind of material position control system.
Background technology
In the prior art, the material position control is mainly contained following several instrument:
1) first kind of instrument be used for to be measured the bigger signal of signal to noise ratio (S/N ratio), directly output or amplify conversion slightly and wait to handle again and export.
2) second kind of universal instrument, the signal of measurement be output again after complicated amplification conversion process, and need to set a steady job point, the instrument output state when coming with this that signal is greater than or less than this steady job point after judgment processing.
3) the third intelligent type universal type instrument, the principle of work of principle of work and universal instrument is similar, also can meet the needs of application scenarios such as temperature compensation.
In realizing process of the present utility model, find to exist at least in the prior art following shortcoming and defect:
First kind of instrument has particular requirement to being suitable for material and environment; Second kind of universal instrument used different materials with the third intelligent type universal type instrument, different debugging requirements is arranged, and on-the-spot labour cost is higher, and needs to set a fixing comparison working point, to the site of deployment of some amplitude drifts, limited the scope of practical application.
The utility model content
The utility model provides a kind of material position control system, and this control system has been avoided the influence of signal drift, has enlarged the scope of practical application, sees for details hereinafter to describe:
A kind of material position control system, comprise: sample circuit, described sample circuit is gathered current time n, n-1 constantly and n-2 material position signalling constantly, described material position signalling is transferred to the electric signal change-over circuit, described electric signal change-over circuit is converted to electric signal with described material position signalling, and transfers to controller; Described controller according to described normalization after electric signal obtain the first electric signal difference DELTA Yn-1 and the second electric signal difference DELTA Yn;
When the described first electric signal difference DELTA Yn-1 or the described second electric signal difference DELTA Yn were in the scope of the default working point of sensor, described controller was kept original output state;
When the described first electric signal difference DELTA Yn-1 or the described second electric signal difference DELTA Yn not in the scope of the default working point of described sensor,
Difference is timing, described controller output contact material signal; Or when difference was negative, described controller output broke away from the material signal.
Described controller specifically is: MCU, FPGA or CPLD.
The beneficial effect of the technical scheme that the utility model provides is: this control system does not need the steady job point, automatically adapt to because the drift of the signal that reasons such as material sticking (suction) is attached, material characteristic variation cause, guarantee the correct judgement of instrument, enlarged the scope of practical application; Owing to use the observational measurement switch technology, have high reliability, low to environmental requirement; Novel structure, simple and reliable.
Description of drawings
Fig. 1 is a kind of structural representation of material position control system;
Fig. 2 is that signal is with the synoptic diagram of material change in location.
Shown in components listed is listed as follows in the accompanying drawing:
1: sample circuit; 2: the electric signal change-over circuit;
3: controller; 4: sensor.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below the utility model embodiment is described in further detail.
For fear of the influence of signal drift, enlarge the scope of practical application, the utility model embodiment provides the control system of a kind of material position, and referring to Fig. 1 and Fig. 2, this control system comprises: sample circuit 1,
Sample circuit 1 is gathered current time n, n-1 constantly and n-2 material position signalling constantly, the material position signalling is transferred to electric signal change-over circuit 2, electric signal change-over circuit 2 is converted to electric signal with the material position signalling, transfer to controller 3, controller 3 obtains the first electric signal difference DELTA Yn-1 and the second electric signal difference DELTA Yn according to electric signal after the normalization;
When the first electric signal difference DELTA Yn-1 or the second electric signal difference DELTA Yn were in sensor 4 default working point scopes, controller 3 was kept original output state;
When the first electric signal difference Δ Yn-1 value or the second electric signal difference DELTA Yn in sensor 4 default working point scopes, and difference is timing, controller 3 output transducers 4 touch the material signal;
When the first electric signal difference DELTA Yn-1 or the second electric signal difference DELTA Yn in sensor 4 default working point scopes, and difference is when negative, controller 3 output transducers 4 break away from the material signals.
Wherein, the first electric signal difference DELTA Yn-1 is the n-1 moment and n-2 electric signal difference constantly, i.e. Δ Yn-1=Yn-1-Yn-2; The second electric signal difference DELTA Yn is the n moment and n-1 electric signal difference constantly, i.e. Δ Yn=Yn-Yn-1.
Wherein, controller 3 can be intelligent device or set of devices such as MCU, FPGA or CPLD.As the first electric signal difference DELTA Yn-1 or the second electric signal difference DELTA Yn during less than default working point scope, show that current time material position does not change, and keeps former output state.As the first electric signal difference DELTA Yn-1 or the second electric signal difference DELTA Yn during greater than default working point scope, show to change at current time material position (when previous status is sensor 4 when not touching material, current time sensor 4 touches material.When controller 3 output transducers 4 break away from the material signal, show material separating sensor 4).
Wherein, the default working point scope of sensor 4 is set according to the needs in the practical application, for example: when control system is applied in the water tower, pressure transducer is installed in 80% water pot and exceeds, and the beginning water level is lower than 80%, and pressure transducer detects a very little value (air pressure), continuous rising along with water (material), when water touches sensor 4, sensor 4 is produced pressure, produce the variation of matter.
During specific implementation, sample circuit 1 can also be gathered the material position signalling in a plurality of moment, for example: current time n, the n-1 moment, the n-2 moment and the n-3 moment etc., or the material position signalling in other a plurality of moment, by electric signal after the normalization in adjacent uniformly-spaced two moment, judge current time, the present current state of material.
When material is former wet goods, the general variation slowly of signal drift that sticking (suction) attached (or coming off) of material etc. caused, and the change amount signal value is smaller, therefore can ignore signal drift to measuring the influence of judging with the way of software set working point scope.
It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, above-mentioned the utility model embodiment sequence number does not represent the quality of embodiment just to description.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. material position control system, comprise: sample circuit (1), it is characterized in that, described sample circuit (1) is gathered current time n, n-1 constantly and n-2 material position signalling constantly, described material position signalling is transferred to electric signal change-over circuit (2), described electric signal change-over circuit (2) is converted to electric signal with described material position signalling, and transfers to controller (3); Described controller (3) according to described normalization after electric signal obtain the first electric signal difference DELTA Yn-1 and the second electric signal difference DELTA Yn;
When the described first electric signal difference DELTA Yn-1 or the described second electric signal difference DELTA Yn were in the scope of the default working point of sensor (4), described controller (3) was kept original output state;
When the described first electric signal difference DELTA Yn-1 or the described second electric signal difference DELTA Yn not in the scope of the default working point of described sensor (4),
Difference is timing, described controller (3) output contact material signal, or
When difference was negative, described controller (3) output broke away from the material signal.
2. a kind of material position control system according to claim 1 is characterized in that, described controller (3) is specially: MCU, FPGA or CPLD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039080 CN203038126U (en) | 2013-01-24 | 2013-01-24 | Material position control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039080 CN203038126U (en) | 2013-01-24 | 2013-01-24 | Material position control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203038126U true CN203038126U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320039080 Expired - Fee Related CN203038126U (en) | 2013-01-24 | 2013-01-24 | Material position control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203038126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112633437A (en) * | 2020-07-23 | 2021-04-09 | 广元量知汇科技有限公司 | Supply chain management method based on industrial interconnection |
-
2013
- 2013-01-24 CN CN 201320039080 patent/CN203038126U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112633437A (en) * | 2020-07-23 | 2021-04-09 | 广元量知汇科技有限公司 | Supply chain management method based on industrial interconnection |
| CN112633437B (en) * | 2020-07-23 | 2022-06-17 | 贵州酱酒智造供应链有限公司 | Supply chain management method based on industrial interconnection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20170124 |