CN108572602B - Control device of tablet press - Google Patents
Control device of tablet press Download PDFInfo
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- CN108572602B CN108572602B CN201810810622.9A CN201810810622A CN108572602B CN 108572602 B CN108572602 B CN 108572602B CN 201810810622 A CN201810810622 A CN 201810810622A CN 108572602 B CN108572602 B CN 108572602B
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- 238000004080 punching Methods 0.000 claims abstract description 63
- 238000011010 flushing procedure Methods 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2622—Press
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Control Of Presses (AREA)
Abstract
The invention discloses a control device of a tablet press. The device comprises: an analog input module, a digital input module and a digital output module; the analog input module is used for acquiring a punch pressure signal of the tablet press according to a preset acquisition period; storing a punch pressure signal of the tablet press into an annular queue; the digital input module is used for receiving a current punching signal of the tablet press; responding to the current punching position signal and acquiring a punching position pressure signal corresponding to the current punching position signal from the annular queue; and the digital output module is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch position signal. The tablet press can be controlled more precisely.
Description
Technical Field
The embodiment of the invention relates to the technical field of tablet presses, in particular to a control device of a tablet press.
Background
The tablet press is mainly applied to pharmaceutical enterprises and is used for pressing granular or powdery materials into round, special-shaped or tablets with characters, symbols or figures, and is a key device suitable for mass production. When the tablet press works, the upper punch rod die arranged in the upper punch disc moves downwards under the constraint of the early pull-down guide rail, and the lower punch rod die arranged in the lower punch disc moves upwards under the constraint of the lifting guide rail, so that the materials in the die in the middle punch disc are finally pressed into tablets.
The tablet press has a plurality of specifications, and can be used for pressing round tablets, inscription tablets, special-shaped tablets, double-layer tablets, multi-layer tablets, annular tablets, chip-coated tablets and the like. High speed and high throughput are a goal of tablet press manufacturers that has been pursued for many years, with major tablet press manufacturers already having tablet presses with throughput of up to 100 tens of thousands of tablets per hour. The highest yield of a ModulD tablet press manufactured by Courtoy company reaches 107 ten thousand tablets/hour; the highest yield of a 4090 i-type tablet press produced by Fette company reaches 150 ten thousand tablets/hour, and the yield is far higher than that of a domestic tablet press.
In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art:
most of existing tablet presses directly adopt a control module of a PLC to collect pressure, and the general program scanning period of the middle-small PLC is more than millisecond level, so that the collected pressure is not the actual pressure of the current punching position, and the tablet press cannot be accurately controlled. Thus, there is a need to overcome this problem as much as possible in a certain way, but there is no effective solution in the prior art.
Disclosure of Invention
The invention provides a control device of a tablet press, which can control the tablet press more accurately.
The embodiment of the invention provides a control device of a tablet press, which comprises: an analog input module, a digital input module and a digital output module; wherein,
the analog input module is used for acquiring punch pressure signals of the tablet press according to a preset acquisition period; storing a punch pressure signal of the tablet press into an annular queue;
the digital input module is used for receiving a current punching signal of the tablet press; responding to the current punching position signal and acquiring a punching position pressure signal corresponding to the current punching position signal from the annular queue;
and the digital output module is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch position signal.
In the above embodiment, the analog input module includes: the first analog input sub-module and the second analog input sub-module; wherein,
the first analog input sub-module is used for collecting a first punch pressure signal of the tablet press according to the preset period; storing a first ram pressure signal of the tablet press into the annular queue;
the second analog input sub-module is used for collecting a second punch pressure signal of the tablet press according to the preset period; storing a second ram pressure signal of the tablet press into the annular queue; the ram pressure signal includes: the first ram pressure signal and the second ram pressure signal.
In the above embodiment, the digital input module includes: the system comprises a first digital input sub-module, a second digital input sub-module and a third digital input sub-module; wherein,
the first digital input sub-module is used for receiving a current first punching signal of the tablet press; responding to the current first punching signal and acquiring a punching head pressure signal corresponding to the current first punching signal from the annular queue;
the second digital input sub-module is used for receiving a current second punching signal of the tablet press; responding to the current second punching signal and acquiring a punching head pressure signal corresponding to the current second punching signal from the annular queue; the current flush signal includes: the current first punch signal and the current second punch signal;
the third digital input sub-module is used for receiving zero signals of the tablet press; and controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal in the annular queue according to the zero signal of the tablet press.
In the above embodiment, the digital output module includes: a first digital output sub-module and a second digital output sub-module; wherein,
the first digital output sub-module is used for controlling the tablet press according to the punch pressure signal corresponding to the current first punch signal;
and the second digital output sub-module is used for controlling the tablet press according to the punch pressure signal corresponding to the current second punch signal.
In the foregoing embodiment, the first digital input sub-module is specifically configured to determine, in response to the current first flushing signal, a first acquisition time point corresponding to the current first flushing signal and a second acquisition time point corresponding to the current first flushing signal; acquiring a punch pressure signal corresponding to the current first punch signal in the annular queue according to a first acquisition time point corresponding to the current first punch signal and a second acquisition time point corresponding to the current first punch signal;
the second digital input sub-module is specifically configured to determine a first acquisition time point corresponding to the current second flushing signal and a second acquisition time point corresponding to the current second flushing signal in response to the current second flushing signal; and acquiring a punch pressure signal corresponding to the current second punch signal in the annular queue according to the first acquisition time point corresponding to the current second punch signal and the second acquisition time point corresponding to the current second punch signal.
In the above embodiment, the third digital input sub-module is specifically configured to control the first digital input sub-module and the second digital input sub-module to obtain, in the annular queue, a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal if the zero signal of the tablet press is at a low level; if the zero signal of the tablet press is high level, controlling the first digital input sub-module and the second digital input sub-module to empty punch pressure signals corresponding to the current first punching signal and punch pressure signals corresponding to the current second punching signal in the annular queue; or if the zero signal of the tablet press is at a high level, controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal in the annular queue; and if the zero signal of the tablet press is low level, controlling the first digital input sub-module and the second digital input sub-module to empty the punch pressure signal corresponding to the current first punching signal and the punch pressure signal corresponding to the current second punching signal in the annular queue.
In the foregoing embodiment, the first digital output sub-module is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is within an effective signal range; if the punch pressure signal corresponding to the current first punch signal is in the effective signal range, controlling the tablet press to divide the current first tablet into an effective tablet queue;
the second digital output sub-module is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is within the valid signal range; and if the punch pressure signal corresponding to the current second punch signal is in the effective signal range, controlling the tablet press to divide the current second tablet into the effective tablet queue.
In the above embodiment, the first digital output sub-module is further configured to control the tablet press to divide the current first tablet into an inactive tablet queue if the punch pressure signal corresponding to the current first punch signal is not within the valid signal range;
and the second digital output sub-module is further used for controlling the tablet press to divide the current second tablet into the invalid tablet queue if the punch pressure signal corresponding to the current second punch signal is not in the valid signal range.
In the foregoing embodiment, the first digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is greater than a first preset pressure threshold and less than a second preset pressure threshold; if the punch pressure signal corresponding to the current first punch signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punch signal is in the effective signal range; the first preset pressure threshold value and the second preset pressure threshold value are boundary values of the effective signal range;
the second digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is greater than the first preset pressure threshold and less than the second preset pressure threshold; and if the punch pressure signal corresponding to the current second punch signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punch signal is in the effective signal range.
In the foregoing embodiment, the first digital output module is further configured to determine whether a punch pressure signal corresponding to the current first punch signal is less than a first preset pressure threshold or greater than or equal to the second preset pressure threshold; if the punch pressure signal corresponding to the current first punch signal is smaller than the first preset pressure threshold or larger than or equal to the second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punch signal is not in the effective signal range;
the second digital output module is further configured to determine whether a punch pressure signal corresponding to the current second punch signal is less than a first preset pressure threshold or greater than or equal to the second preset pressure threshold; and if the punch pressure signal corresponding to the current second punch signal is smaller than the first preset pressure threshold or larger than or equal to the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punch signal is not in the effective signal range.
According to the control device of the tablet press, provided by the invention, the analog input module acquires the punch pressure signal of the tablet press according to the preset acquisition period; storing a punch pressure signal of the tablet press into an annular queue; the digital input module receives a current punching signal of the tablet press; responding to the current punching signal to obtain a punching pressure signal corresponding to the current punching signal in the annular queue; the digital output module controls the tablet press according to the punch pressure signal corresponding to the current punch signal. That is, in the technical solution provided in the embodiment of the present invention, the digital output module may control the tablet press according to the punch pressure signal corresponding to the current punch signal obtained by the digital input module in the annular queue. Therefore, compared with the prior art, the control device of the tablet press provided by the embodiment of the invention can control the tablet press more accurately; in addition, the technical scheme of the embodiment of the invention is simple and convenient to realize, convenient to popularize and wider in application range.
Drawings
Fig. 1 is a schematic structural view of a control device of a tablet press according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control device of a tablet press according to a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a schematic structural diagram of a control device of a tablet press according to a first embodiment of the present invention. As shown in fig. 1, the control device of the tablet press may include: an analog input module 101, a digital input module 102, and a digital output module 103; wherein,
the analog input module 101 is used for acquiring a punch pressure signal of the tablet press according to a preset acquisition period; the punch pressure signal of the tablet press is stored in an annular queue.
In a specific embodiment of the present invention, the analog input module 101 may collect the punch pressure signal of the tablet press according to a preset collection period; the punch pressure signal of the tablet press is stored in an annular queue. Specifically, the analog input module 101 may collect punch pressure signals of the tablet press every 40-50 us; the punch pressure signal of the tablet press is stored in an annular queue.
A digital input module 102 for receiving a current punch signal of the tablet press; and responding to the current punching position signal, and acquiring a punching position pressure signal corresponding to the current punching position signal in the annular queue.
In an embodiment of the present invention, digital input module 102 may receive a current punch signal of the tablet press; and then, responding to the current punching position signal and acquiring a punching position pressure signal corresponding to the current punching position signal in the annular queue. In an embodiment of the present invention, a typical high speed rotary tablet press has about 75 punches with a dual pass throughput of 150W (chips/hour), the space between punches being maintained: 3600/(1500000/2) =4.8 ms, the width of the punch and the distance of the punch bit are about 1:3, the time actually spent on the punch is about 1.2ms. To accurately describe the pressure change of the entire punch during the tabletting process, about 20 punch pressure signals need to be acquired.
And the digital output module 103 is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch position signal.
In an embodiment of the present invention, the digital output module 103 may control the tablet press according to the punch pressure signal corresponding to the current punch position signal. Specifically, the digital output module 103 may determine whether the ram pressure signal corresponding to the current ram signal is within the valid signal range; if the punch pressure signal corresponding to the current punch signal is within the effective signal range, the digital output module 103 may control the tablet press to divide the current first tablet into an effective tablet queue; if the punch pressure signal corresponding to the current punch signal is not within the valid signal range, the digital output module 103 may control the tablet press to divide the current first tablet into an inactive tablet queue.
According to the control device of the tablet press, provided by the invention, the analog input module acquires the punch pressure signal of the tablet press according to the preset acquisition period; storing a punch pressure signal of the tablet press into an annular queue; the digital input module receives a current punching signal of the tablet press; responding to the current punching signal to obtain a punching pressure signal corresponding to the current punching signal in the annular queue; the digital output module controls the tablet press according to the punch pressure signal corresponding to the current punch signal. That is, in the technical solution provided in the embodiment of the present invention, the digital output module may control the tablet press according to the punch pressure signal corresponding to the current punch signal obtained by the digital input module in the annular queue. Therefore, compared with the prior art, the control device of the tablet press provided by the embodiment of the invention can control the tablet press more accurately; in addition, the technical scheme of the embodiment of the invention is simple and convenient to realize, convenient to popularize and wider in application range.
Example two
Fig. 2 is a schematic structural diagram of a control device of a tablet press according to a second embodiment of the present invention. As shown in fig. 2, the analog input module 101 includes: a first analog input submodule 1011 and a second analog input submodule 1012; wherein,
a first analog input submodule 1011 for acquiring a first punch pressure signal of the tablet press according to a preset period; a first ram pressure signal of the tablet press is stored in an annular queue.
In a specific embodiment of the present invention, the first analog input submodule 1011 may collect the first punch pressure signal of the tablet press according to a preset period; a first ram pressure signal of the tablet press is stored in an annular queue. Specifically, the first analog input sub-module 1011 may collect a first ram pressure signal of the tablet press every 40-50 us; a first ram pressure signal of the tablet press is stored in an annular queue.
A second analog input sub-module 1012 for collecting a second punch pressure signal of the tablet press according to a preset period; a second ram pressure signal of the tablet press is stored in an annular queue.
In a specific embodiment of the present invention, the second analog input sub-module 1012 may collect the second punch pressure signal of the tablet press at a preset period; a second ram pressure signal of the tablet press is stored in an annular queue. Specifically, the second analog input sub-module 1012 may collect a second punch pressure signal of the tablet press every 40-50 us; a second ram pressure signal of the tablet press is stored in an annular queue.
Preferably, in an embodiment of the present invention, the digital input module 102 includes: a first digital input submodule 1021, a second digital input submodule 1022, and a third digital input submodule 1023; wherein,
a first digital input sub-module 1021 for receiving a current first punch signal of the tablet press; and responding to the current first punching signal, and acquiring a punching head pressure signal corresponding to the current first punching signal from the annular queue.
In a specific embodiment of the present invention, the first digital input submodule 1021 is specifically configured to determine a first acquisition time point corresponding to a current first flushing signal and a second acquisition time point corresponding to the current first flushing signal in response to the current first flushing signal; then, the first digital input word module 1021 may obtain a punch pressure signal corresponding to the current first punch signal in the annular queue according to the first acquisition time point corresponding to the current first punch signal and the second acquisition time point corresponding to the current first punch signal.
A second digital input sub-module 1022 for receiving a current second punch signal of the tablet press; and responding to the current second punching signal and acquiring a punching head pressure signal corresponding to the current second punching signal in the annular queue.
In a specific embodiment of the present invention, the second digital input submodule 1022 is specifically configured to determine a first acquisition time point corresponding to the current second flushing signal and a second acquisition time point corresponding to the current second flushing signal in response to the current second flushing signal; the second digital input sub-module 1022 may then obtain the punch pressure signal corresponding to the current second punch signal in the annular queue according to the first acquisition time point corresponding to the current second punch signal and the second acquisition time point corresponding to the current second punch signal.
A third digital input sub-module 1023 for receiving a zero signal of the tablet press; and controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punching signal and a punch pressure signal corresponding to the current second punching signal in the annular queue according to the zero signal of the tablet press.
In a specific embodiment of the present invention, the third digital input submodule 1023 is specifically configured to control the first digital input submodule 1021 and the second digital input submodule 1022 to obtain, in the annular queue, a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal if the zero signal of the tablet press is at a low level; if the zero signal of the tablet press is at a high level, the first digital input submodule 1021 and the second digital input submodule 1022 are controlled to empty punch pressure signals corresponding to the current first punch position signal and punch pressure signals corresponding to the current second punch position signal in the annular queue; or if the zero signal of the tablet press is at a high level, controlling the first digital input submodule 1021 and the second digital input submodule 1022 to acquire a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal in the annular queue; if the zero signal of the tablet press is at a low level, the first digital input submodule 1021 and the second digital input submodule 1022 are controlled to empty the punch pressure signal corresponding to the current first punch signal and the punch pressure signal corresponding to the current second punch signal in the annular queue.
Preferably, in an embodiment of the present invention, the digital output module 103 includes: a first digital output sub-module 1031 and a second digital output sub-module 1032; wherein,
the first digital output submodule 1031 is configured to control the tablet press according to a punch pressure signal corresponding to the current first punch signal.
In a specific embodiment of the present invention, the first digital output submodule 1031 is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is within a valid signal range; and if the punch pressure signal corresponding to the current first punch signal is in the effective signal range, controlling the tablet press to divide the current first tablet into an effective tablet queue.
Specifically, the first digital output submodule 1031 is further configured to control the tablet press to divide the current first tablet into the inactive tablet queue if the punch pressure signal corresponding to the current first punch position signal is not within the valid signal range.
Specifically, the first digital output module 1031 is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is greater than a first preset pressure threshold and less than a second preset pressure threshold; if the punch pressure signal corresponding to the current first punch signal is larger than a first preset pressure threshold value and smaller than a second preset pressure threshold value, judging that the punch pressure signal corresponding to the current first punch signal is in an effective signal range; the first preset pressure threshold and the second preset pressure threshold are boundary values of the effective signal range.
Specifically, the first digital output module 1031 is further configured to determine whether a punch pressure signal corresponding to the current first punch signal is less than a first preset pressure threshold or greater than or equal to a second preset pressure threshold; if the punch pressure signal corresponding to the current first punch signal is smaller than a first preset pressure threshold or larger than or equal to a second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punch signal is not in the effective signal range.
And a second digital output submodule 1032 for controlling the tablet press according to the punch pressure signal corresponding to the current second punch position signal.
In a specific embodiment of the present invention, the second digital output submodule 1032 is specifically configured to determine whether the punch pressure signal corresponding to the current second punch signal is within the valid signal range; and if the punch pressure signal corresponding to the current second punch signal is in the effective signal range, controlling the tablet press to divide the current second tablet into the effective tablet queue.
Specifically, the second digital output submodule 1032 is further configured to control the tablet press to divide the current second tablet into the inactive tablet queue if the punch pressure signal corresponding to the current second punch position signal is not within the valid signal range.
Specifically, the second digital output module 1032 is specifically configured to determine whether the punch pressure signal corresponding to the current second punch signal is greater than a first preset pressure threshold and less than a second preset pressure threshold; if the punch pressure signal corresponding to the current second punch signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punch signal is in the effective signal range.
Specifically, the second digital output module 1032 is further configured to determine whether the punch pressure signal corresponding to the current second punch signal is less than the first preset pressure threshold or greater than or equal to the second preset pressure threshold; if the punch pressure signal corresponding to the current second punch signal is smaller than the first preset pressure threshold or larger than or equal to the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punch signal is not in the effective signal range.
According to the control device of the tablet press, provided by the invention, the analog input module acquires the punch pressure signal of the tablet press according to the preset acquisition period; storing a punch pressure signal of the tablet press into an annular queue; the digital input module receives a current punching signal of the tablet press; responding to the current punching signal to obtain a punching pressure signal corresponding to the current punching signal in the annular queue; the digital output module controls the tablet press according to the punch pressure signal corresponding to the current punch signal. That is, in the technical solution provided in the embodiment of the present invention, the digital output module may control the tablet press according to the punch pressure signal corresponding to the current punch signal obtained by the digital input module in the annular queue. Therefore, compared with the prior art, the control device of the tablet press provided by the embodiment of the invention can control the tablet press more accurately; in addition, the technical scheme of the embodiment of the invention is simple and convenient to realize, convenient to popularize and wider in application range.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A control device for a tablet press, the device comprising: an analog input module, a digital input module and a digital output module; wherein,
the analog input module is used for acquiring punch pressure signals of the tablet press according to a preset acquisition period;
the analog input module acquires punch pressure signals of the tablet press according to a preset acquisition period, wherein the analog input module acquires the punch pressure signals of the tablet press every 40-50 us;
storing a punch pressure signal of the tablet press into an annular queue;
the digital input module is used for receiving a current punching signal of the tablet press; responding to the current punching position signal and acquiring a punching position pressure signal corresponding to the current punching position signal from the annular queue;
the digital output module is used for controlling the tablet press according to the punch pressure signal corresponding to the current punch signal; the digital output module judges whether the punch pressure signal corresponding to the current punch signal is in an effective signal range or not; if the punch pressure signal corresponding to the current punch signal is in the effective signal range, the digital output module controls the tablet press to divide the current first tablet into an effective tablet queue; and if the punch pressure signal corresponding to the current punch signal is not in the effective signal range, the digital output module controls the tablet press to divide the current first tablet into an invalid tablet queue.
2. The apparatus of claim 1, wherein the analog input module comprises: the first analog input sub-module and the second analog input sub-module; wherein,
the first analog input sub-module is used for acquiring a first punch pressure signal of the tablet press according to the preset acquisition period; storing a first ram pressure signal of the tablet press into the annular queue;
the second analog input sub-module is used for acquiring a second punch pressure signal of the tablet press according to the preset acquisition period; storing a second ram pressure signal of the tablet press into the annular queue; the ram pressure signal includes: the first ram pressure signal and the second ram pressure signal.
3. The apparatus of claim 2, wherein the digital input module comprises: the system comprises a first digital input sub-module, a second digital input sub-module and a third digital input sub-module; wherein,
the first digital input sub-module is used for receiving a current first punching signal of the tablet press; responding to the current first punching signal and acquiring a punching head pressure signal corresponding to the current first punching signal from the annular queue;
the second digital input sub-module is used for receiving a current second punching signal of the tablet press; responding to the current second punching signal and acquiring a punching head pressure signal corresponding to the current second punching signal from the annular queue; the current flush signal includes: the current first punch signal and the current second punch signal;
the third digital input sub-module is used for receiving zero signals of the tablet press; and controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal in the annular queue according to the zero signal of the tablet press.
4. The apparatus of claim 3, wherein the digital output module comprises: a first digital output sub-module and a second digital output sub-module; wherein,
the first digital output sub-module is used for controlling the tablet press according to the punch pressure signal corresponding to the current first punch signal;
and the second digital output sub-module is used for controlling the tablet press according to the punch pressure signal corresponding to the current second punch signal.
5. A device according to claim 3, characterized in that:
the first digital input sub-module is specifically configured to determine a first acquisition time point corresponding to the current first flushing signal and a second acquisition time point corresponding to the current first flushing signal in response to the current first flushing signal; acquiring a punch pressure signal corresponding to the current first punch signal in the annular queue according to a first acquisition time point corresponding to the current first punch signal and a second acquisition time point corresponding to the current first punch signal;
the second digital input sub-module is specifically configured to determine a first acquisition time point corresponding to the current second flushing signal and a second acquisition time point corresponding to the current second flushing signal in response to the current second flushing signal; and acquiring a punch pressure signal corresponding to the current second punch signal in the annular queue according to the first acquisition time point corresponding to the current second punch signal and the second acquisition time point corresponding to the current second punch signal.
6. A device according to claim 3, characterized in that:
the third digital input sub-module is specifically configured to control the first digital input sub-module and the second digital input sub-module to obtain a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal in the annular queue if the zero signal of the tablet press is at a low level; if the zero signal of the tablet press is high level, controlling the first digital input sub-module and the second digital input sub-module to empty punch pressure signals corresponding to the current first punching signal and punch pressure signals corresponding to the current second punching signal in the annular queue; or if the zero signal of the tablet press is at a high level, controlling the first digital input sub-module and the second digital input sub-module to acquire a punch pressure signal corresponding to the current first punch signal and a punch pressure signal corresponding to the current second punch signal in the annular queue; and if the zero signal of the tablet press is low level, controlling the first digital input sub-module and the second digital input sub-module to empty the punch pressure signal corresponding to the current first punching signal and the punch pressure signal corresponding to the current second punching signal in the annular queue.
7. The apparatus according to claim 4, wherein:
the first digital output sub-module is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is within an effective signal range; if the punch pressure signal corresponding to the current first punch signal is in the effective signal range, controlling the tablet press to divide the current first tablet into an effective tablet queue;
the second digital output sub-module is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is within the valid signal range; and if the punch pressure signal corresponding to the current second punch signal is in the effective signal range, controlling the tablet press to divide the current second tablet into the effective tablet queue.
8. The apparatus according to claim 7, wherein:
the first digital output sub-module is further configured to control the tablet press to divide the current first tablet into an inactive tablet queue if a punch pressure signal corresponding to the current first punch signal is not within the valid signal range;
and the second digital output sub-module is further used for controlling the tablet press to divide the current second tablet into the invalid tablet queue if the punch pressure signal corresponding to the current second punch signal is not in the valid signal range.
9. The apparatus according to claim 8, wherein:
the first digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current first punch signal is greater than a first preset pressure threshold and less than a second preset pressure threshold; if the punch pressure signal corresponding to the current first punch signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punch signal is in the effective signal range; the first preset pressure threshold value and the second preset pressure threshold value are boundary values of the effective signal range;
the second digital output module is specifically configured to determine whether a punch pressure signal corresponding to the current second punch signal is greater than the first preset pressure threshold and less than the second preset pressure threshold; and if the punch pressure signal corresponding to the current second punch signal is larger than the first preset pressure threshold and smaller than the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punch signal is in the effective signal range.
10. The apparatus according to claim 9, wherein:
the first digital output module is further configured to determine whether a punch pressure signal corresponding to the current first punch signal is less than a first preset pressure threshold or greater than or equal to the second preset pressure threshold; if the punch pressure signal corresponding to the current first punch signal is smaller than the first preset pressure threshold or larger than or equal to the second preset pressure threshold, judging that the punch pressure signal corresponding to the current first punch signal is not in the effective signal range;
the second digital output module is further configured to determine whether a punch pressure signal corresponding to the current second punch signal is less than a first preset pressure threshold or greater than or equal to the second preset pressure threshold; and if the punch pressure signal corresponding to the current second punch signal is smaller than the first preset pressure threshold or larger than or equal to the second preset pressure threshold, judging that the punch pressure signal corresponding to the current second punch signal is not in the effective signal range.
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| CN111890722A (en) * | 2020-08-06 | 2020-11-06 | 上海海得控制系统股份有限公司 | Method and device for controlling pressure of punch of tablet press, storage medium and electronic equipment |
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