CN201559254U - Dispensing equipment and metering system thereof - Google Patents

Dispensing equipment and metering system thereof Download PDF

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Publication number
CN201559254U
CN201559254U CN200920272766XU CN200920272766U CN201559254U CN 201559254 U CN201559254 U CN 201559254U CN 200920272766X U CN200920272766X U CN 200920272766XU CN 200920272766 U CN200920272766 U CN 200920272766U CN 201559254 U CN201559254 U CN 201559254U
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China
Prior art keywords
signal
metering system
dispensing equipment
load cells
control device
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Expired - Fee Related
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CN200920272766XU
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Chinese (zh)
Inventor
彭贤武
王征
王艳军
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Sany Heavy Industry Co Ltd
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Sany Heavy Industry Co Ltd
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Priority to CN200920272766XU priority Critical patent/CN201559254U/en
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Abstract

The utility model discloses a metering system used for dispensing equipment, comprising a detecting device (1), a signal conversion device (2), a control device (3) and an actuating mechanism (4), wherein the detecting device (1) is used for collecting the weight signal of the material; the signal conversion device (2) is used for converting the weight signal into the standard signal in preset type; and the control device (3) is used for receiving the standard signal and controls the dispensing action of the actuating mechanism (4) according to the control program. In the utility model, various types of weight signal detected by the detecting device (1) is converted into the standard signal in the preset type meeting the performance of the control device through the signal conversion device (2), thereby realizing the matching of the control device (3) and the signal type and obviously improving the accuracy of the metering system. The utility model also discloses dispensing equipment comprising the metering system.

Description

A kind of dispensing equipment and metering system thereof
Technical field
The utility model relates to field of engineering technology, particularly a kind of metering system that is used for material metering and batching.The utility model also relates to a kind of dispensing equipment that comprises above-mentioned metering system.
Background technology
In the engineering industry, many fields all utilize metering device that all kinds of materials are measured and prepare burden.Particularly in the production process of (hereinafter to be referred as the concrete industries) such as bituminous concrete, cement concrete, dry powder and mortar, asphalt cement mortars, in order to guarantee the quality of concrete finished product, must measure various production raw material, and carry out raw-material configuration in strict accordance with factory formula.For realizing that each raw material component is measured comparatively accurately, all use special metering, feed proportioning system generally speaking.
At present, actual operating position analysis from various device, the mode of weighing and metering system mainly contain two big classes: a class is that the signal of LOAD CELLS is directly sent into special weighing terminal, utilize demonstration, formulation management, the batching function of weighing terminal to finish to the operation of metering device and realization material metering, file in order to carry out exchanges data and to finish historical data with the control computer, this class weighing system must be realized weighing terminal and control communicating by letter between the computer by bus communication.But, in this kind metering system, needing to rely on weighing terminal and finish functions such as school scale, batching, the record of its data relies on the weighing terminal and the communication of control computer to finish.When in the formulation management of weighing terminal or the batching function during some breaking down, other funtion part is also unaffected, and in this case, data communication is with the information of misregistration, and error logging and demonstration will appear in the control computer; When this in addition mode of weighing superposes metering for various materials, the stack metering will be subjected to the performance limitations of weighing terminal itself.
In measuring, rely on the lower problem of precision that weighing terminal caused, can directly the signal of sensor be sent into the controller of control system, utilize the operations such as reduction, formulation management, batching of the analog signal processing function realization data of controller; And utilize the communication function of controller and control computer to carry out real-time Communication for Power, finish functions such as data show, record preservation.
But, for this kind metering system, the analog signals that LOAD CELLS produces is the non-standard signal of telecommunication of millivolt level, and very easily is interfered in the sort signal transmission course, and can not match by treatment of simulated amount signal with various controllers, have a strong impact on the precision of continuous data.In addition, continuous data is demonstration on computers only, and does not have special-purpose electrometer quantity display apparatus, under this mode, data show the data processing speed that will depend on communication speed and control computer, cause the metering configuration sum of errors mistake to occur thereby serious hysteresis will occur.
How to overcome controller and input signal mismatch, thereby improve the measuring accuracy of metering system, just become the problem that those skilled in the art need solve.
The utility model content
The purpose of this utility model provides a kind of metering system, and it has overcome the mismatch of controller and input signal, thereby has higher measuring accuracy.Another purpose of the present utility model provides a kind of dispensing equipment that comprises above-mentioned metering system.
For solving the problems of the technologies described above, the utility model provides a kind of metering system that is used for dispensing equipment, comprising:
Checkout gear is used to gather the weight signal of material;
Chromacoder is used for described weight signal is converted to the standard signal of predefined type;
Control device is used to receive described standard signal, and moves according to the batching of control program control executing agency.
Preferably, described chromacoder is an intelligence instrument.
Preferably, described checkout gear is a LOAD CELLS.
Preferably, the number of described LOAD CELLS is a plurality of.
Preferably, also be included as the signal box that described LOAD CELLS provides excitation power supply, described signal box is connected with described chromacoder with described LOAD CELLS by cable respectively.
Preferably, described LOAD CELLS and described signal box are integral structure.
Preferably, described cable is a shielded cable.
Preferably, described control device is the PLC controller.
Preferably, also comprise memory, described memory is connected with described PLC controller by cable.
The utility model also provides a kind of dispensing equipment, comprises above-mentioned each described metering system.
The metering system that is used for dispensing equipment provided by the utility model comprises checkout gear, chromacoder and control device; Checkout gear is used to gather the weight signal of material, and chromacoder is used for described weight signal is converted to the standard signal of predefined type, and control device is used to receive described standard signal, and moves according to the batching of control program control executing agency.Like this, by chromacoder with the detected various types of weight signals of checkout gear, be converted to the standard signal of the predefined type that meets the control device performance, thereby realized the matching of control device and signal type, significantly improved the precision of metering system; Simultaneously,, utilize the standard signal output function of signal converter device, needn't change the control program of control device, can either finish metering, improved the versatility of metering device even after changing dissimilar LOAD CELLSs.
A kind of preferred embodiment in, chromacoder provided by the present invention can be specially intelligence instrument.Intelligence instrument is common outsourcing piece, only needs intelligence instrument is connected into control system, and the versatility that promptly can realize improving measuring accuracy and improve metering device, cost is lower and easy to install.
In the another kind of specific embodiment, the cable that connects between the various device among the present invention is shielded cable.Because electrical signal delivered is comparatively faint in metering system, therefore, be easier to be interfered, use shielded cable can avoid interference suffered in the signals transmission, thereby improved the reliability and stability that signal transmits.
Description of drawings
Fig. 1 is the structural representation of metering system that the utility model provides;
Fig. 2 provides the structural representation of a kind of specific embodiment of metering system for the utility model;
Fig. 3 is the structural representation of the another kind of specific embodiment of metering system that the utility model provides.
The specific embodiment
Core of the present utility model provides a kind of metering system, and it has overcome the mismatch of controller and input signal, thereby has higher measuring accuracy.Another core of the present utility model provides a kind of dispensing equipment that comprises above-mentioned metering system.
In order to make those skilled in the art person understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation of metering system that the utility model provides.
Metering system provided by the utility model is used for the dispensing equipment of concrete etc., is used for comparatively accurately according to finished-product material such as the synthetic concrete of raw material proportioning.This metering system comprises checkout gear 1, chromacoder 2 and control device 3, control executing agency 4; Checkout gear 1 is used to gather the weight signal of material, and chromacoder 2 is used for described weight signal is converted to the standard signal of predefined type, and control device 3 is used to receive described standard signal, and moves according to the batching of control program control executing agency 4.
In the course of work of dispensing equipment, checkout gear 1 detects the weight signal of material in real time, and this weight signal transferred to chromacoder 2, chromacoder 2 receives weight signal, and this weight signal is converted to the standard signal or the digital quantity signal of the predefined type that is complementary with control device 3, and this standard signal transferred to control device 3, control device 3 receives standard signal, and according to the batching action of control program control executing agency 4.Like this, by chromacoder 2 with checkout gear 1 detected various types of weight signals, be converted to the standard signal of the predefined type that meets control device 3 performances, thereby realized the matching of control device 3, significantly improved the precision of metering system with signal type; Simultaneously,, utilize the standard signal output function of signal converter device, needn't change the control program of control device 3, can either finish metering, improved the versatility of metering device even after changing dissimilar LOAD CELLSs 11.
The signal of above-mentioned predefined type can be the signal of telecommunication of standard, also can be the signal of other types, and the type and size of this signal should be complementary with the performance of control device 3, thereby realizes improving the purpose of measuring accuracy.
The control program of above-mentioned control device 3 is certain computing formula or predetermined strategy, and by the size of control program with the concrete signal that is conveyed into, and the process computational analysis obtains instantaneous control action.Above-mentioned control program should input to control device 3 in advance, and the particular type of control program and mode should be determined according to the instructions for use of reality, not do concrete qualification in this manual.
Please refer to Fig. 2, Fig. 2 provides the structural representation of a kind of specific embodiment of metering system for the utility model.
In a kind of specific embodiment, above-mentioned chromacoder 2 can be intelligence instrument 21, intelligence instrument 21 has functions such as standard signal output, output signal demarcation, data demonstration, can promptly and accurately show continuous data, can easily realize the signal scaling process of metering device simultaneously; Even after changing dissimilar checkout gears 1, utilize the standard signal output and the calibrating function of intelligence instrument 21, also needn't change any control program, realized the high universalizable of metering device; Intelligence instrument 21 can convert weighing-up wave to the standard electric signal simultaneously, can effectively improve the precision of the signal of control device 3 processing, improves the resolution ratio of metering device.In addition, intelligence instrument 21 is common outsourcing piece, only need intelligence instrument 21 is connected into control system, and the versatility that promptly can realize improving measuring accuracy and improve metering device, cost is lower and easy to install.
Above-mentioned chromacoder 2 also is not limited to intelligence instrument 21, also can the signal that import into can be converted to the device of standard signal for other.
Above-mentioned detection device 1 can be LOAD CELLS 11.Detect the weight of material by LOAD CELLS 11, and this weight signal is transferred to intelligence instrument 21, parameter detecting is comparatively direct, need not carry out the parameter conversion and can obtain gravimetric value, the difficulty of having simplified control and having calculated.
The number of above-mentioned LOAD CELLS 11 can so that detect the weight of various materials simultaneously, and carry out comprehensive transmission and Comprehensive Control for a plurality of.
Apparently, above-mentioned detection device 1 also is not limited to LOAD CELLS 11, also can be other detecting elements, detect a certain signal relevant with weight after, be converted into weight signal through the processes such as conversion of signal again and import intelligence instrument 21 into.
In the above-mentioned specific embodiment, metering system provided by the utility model can also comprise signal box, provides excitation power supply by signal box for LOAD CELLS 11, and this signal box is connected with chromacoder 2 with each LOAD CELLS 11 by cable respectively.
Above-mentioned cable can be shielded cable.Because electrical signal delivered is comparatively faint in metering system, therefore, be easier to be interfered, use shielded cable can avoid interference suffered in the signals transmission, thereby improved the reliability and stability that signal transmits; Use shielded cable to reduce metering system simultaneously in use to environment requirements.
Above-mentioned LOAD CELLS 11 can with the signal box structure of formula that is processed as one, thereby make that the structure of metering device is comparatively compact.Apparently, LOAD CELLS 11 and signal box also can be split type structure.
Above-mentioned control device 3 can be PLC controller 31.PLC controller 31 has logic judgement and output function, can accurately control the action of metering device, finishes the batching and the operating process of metering device, and batching quantity is unrestricted.Control device 3 also is not limited to PLC controller 31, and it also can realize that signal receives and the element of control function for other, for example single-chip microcomputer etc.
In the course of work of dispensing equipment, signal box provides excitation power supply to each LOAD CELLS 11, and gathers the weight signal of materials by LOAD CELLS 11, and sends the signal filtering of gathering with after adjusting into intelligence instrument 21; The weighing-up wave that intelligence instrument 21 received signal casees are sent into by behind the signal scaling of inside and after adjusting, forms the signal of telecommunication (voltage, electric current, digital quantity) of standard; The standard electric signal can carry out the demarcation of signal, on the one hand, demarcates the back signal of telecommunication and will directly drive demonstration, and on the other hand, calibrated signal will be sent into next flow process PLC controller 31; Intelligence instrument 21 has Presentation Function, and the actual weight that it can directly be reduced into the calibrated signal of telecommunication weigher can directly instruct produced on-site; Because the signal that gather the display part is not handled through the signal of PLC controller 31, it will not be subjected to the influence of conversion speed and precision, can effectively improve the performance of metering system; After PLC controller 31 receives the standard signal or data that intelligence instrument 21 sends, calculate and judge according to its inner control program formulation management, by its output function control batching action.
It is pointed out that signal box handles the weighing-up wave that receives, mainly is after finishing preliminary filtering to signal, adjusting, to send intelligence instrument 21 to by shielded cable.Functions such as intelligence instrument 21 has that signal is adjusted, output and data demonstration, its with the signal that receives through after adjusting, the outside outputting standard signal of telecommunication (0-20mA, 4-20mA, 0-10V) or digital quantity signal, the data of output signal of telecommunication correspondence can also be shown on instrument.Intelligence instrument 21 also has another " output signal demarcation " function, demarcate the linear relationship between the signal of output signal and input, promptly can carry out " mark zero " under weigher has only the situation of deadweight and operate, the signal of its output is the zero point of standard electric signal, be 0V, 0mA or 4mA; When on the weigher standard test weight being arranged, can after setting counterweight weight, carry out " indicated weight ", the signal of its output is the voltage or the current signal of " indicated weight " weight correspondence, thus the purpose that realizes effectively improving the precision of output signal and then improve measuring accuracy.
Please refer to Fig. 3, Fig. 3 is the structural representation of the another kind of specific embodiment of metering system that the utility model provides.
In the another kind of specific embodiment, metering system provided by the utility model can also comprise memory 5, and this memory 5 is connected with described PLC by cable.
This memory 5 can specifically be controlled computer, this control computer expert crosses the bus communication cable and links to each other with PLC controller 31, PLC controller 31 transmits by bus mode the various states and the data of metering device to the control computer, the control computer is monitored whole weighing system.Because it is to be undertaken by the control computer all the time that the record of system status monitoring and data is preserved, and can effectively avoid losing of maloperation and data, also can form various forms of forms; And the control computer will carry out the management and the file of data, be convenient to the management and the historical query of data; PLC signal processing simultaneously and data record must will be changed instruction between filing mutually, when intelligence instrument 21 think signal that PLC controller 31 imports into or PLC among the signal of executive component transmission any one when breaking down, next link will be received its fault message, effectively guarantee the uniformity of its data and meter action.
Except above-mentioned metering system, the utility model also provides a kind of dispensing equipment that comprises above-mentioned metering system, and the concrete structure of other each several parts of this dispensing equipment please refer to prior art, and this paper repeats no more.
More than a kind of dispensing equipment provided by the utility model and metering system thereof are described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (10)

1. a metering system that is used for dispensing equipment is characterized in that, comprising:
Checkout gear (1) is used to gather the weight signal of material;
Chromacoder (2) is used for described weight signal is converted to the standard signal of predefined type;
Control device (3) is used to receive described standard signal, and moves according to the batching of control program control executing agency (4).
2. the metering system that is used for dispensing equipment according to claim 1 is characterized in that, described chromacoder (2) is intelligence instrument (21).
3. the metering system that is used for dispensing equipment according to claim 1 is characterized in that, described checkout gear (1) is LOAD CELLS (11).
4. the metering system that is used for dispensing equipment according to claim 3 is characterized in that, the number of described LOAD CELLS (11) is a plurality of.
5. the metering system that is used for dispensing equipment according to claim 4, it is characterized in that, also be included as described LOAD CELLS (11) signal box of excitation power supply is provided, described signal box is connected with described chromacoder (2) with described LOAD CELLS (11) by cable respectively.
6. the metering system that is used for dispensing equipment according to claim 5 is characterized in that, described LOAD CELLS (11) is an integral structure with described signal box.
7. the metering system that is used for dispensing equipment according to claim 5 is characterized in that, described cable is a shielded cable.
8. the metering system that is used for dispensing equipment according to claim 1 is characterized in that, described control device (3) is PLC controller (31).
9. according to each described metering system that is used for dispensing equipment of claim 1 to 8, it is characterized in that also comprise memory (5), described memory (5) is connected with described PLC controller (31) by cable.
10. a dispensing equipment is characterized in that, comprises each described metering system of claim 1 to 9.
CN200920272766XU 2009-12-29 2009-12-29 Dispensing equipment and metering system thereof Expired - Fee Related CN201559254U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528930A (en) * 2012-02-03 2012-07-04 三一重工股份有限公司 Aggregate metering control device and aggregate metering control method
CN102658600A (en) * 2012-05-13 2012-09-12 韶关市天源重机有限公司 Control method of dosing accuracy of concrete mixing equipment
CN103713611A (en) * 2014-01-02 2014-04-09 莱芜钢铁集团电子有限公司 Configurable belt weighing metering control device
CN104369887A (en) * 2014-08-27 2015-02-25 梧州市旺捷机械制造有限公司 Liquid filling machine
CN111702961A (en) * 2020-06-22 2020-09-25 苏州海宏水泥制品有限公司 Intelligent automatic feeding system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528930A (en) * 2012-02-03 2012-07-04 三一重工股份有限公司 Aggregate metering control device and aggregate metering control method
CN102528930B (en) * 2012-02-03 2014-10-15 三一重工股份有限公司 Aggregate metering control device and aggregate metering control method
CN102658600A (en) * 2012-05-13 2012-09-12 韶关市天源重机有限公司 Control method of dosing accuracy of concrete mixing equipment
CN103713611A (en) * 2014-01-02 2014-04-09 莱芜钢铁集团电子有限公司 Configurable belt weighing metering control device
CN104369887A (en) * 2014-08-27 2015-02-25 梧州市旺捷机械制造有限公司 Liquid filling machine
CN111702961A (en) * 2020-06-22 2020-09-25 苏州海宏水泥制品有限公司 Intelligent automatic feeding system
CN111702961B (en) * 2020-06-22 2021-07-30 苏州海宏水泥制品有限公司 Intelligent automatic feeding system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Changde 31 Machinery Co., Ltd.

Assignor: Sanyi Heavy Industry Co., Ltd.

Contract record no.: 2012430000055

Denomination of utility model: Dispensing equipment and metering system thereof

Granted publication date: 20100825

License type: Exclusive License

Record date: 20120428

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100825

Termination date: 20161229

CF01 Termination of patent right due to non-payment of annual fee