CN204116447U - The working current collection of homogeneity of concrete on-line monitoring stirring machine and several road that conducts electricity - Google Patents
The working current collection of homogeneity of concrete on-line monitoring stirring machine and several road that conducts electricity Download PDFInfo
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- CN204116447U CN204116447U CN201420594093.0U CN201420594093U CN204116447U CN 204116447 U CN204116447 U CN 204116447U CN 201420594093 U CN201420594093 U CN 201420594093U CN 204116447 U CN204116447 U CN 204116447U
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Abstract
The utility model discloses the working current collection of a kind of homogeneity of concrete on-line monitoring stirring machine and count the road that conducts electricity, comprise data collector and power module, and for the AC current sensor that detects the working current of mixer motor with to connect with data collector and for the RS-485 communication circuit module of connection data transceiver and computing machine, the model of AC current sensor is I412F41, the input end of data collector is connected to clock circuit module and signal conditioning circuit module, signal conditioning circuit module is made up of the amplification connected successively and filter circuit module and A/D change-over circuit module, the output terminal of AC current sensor connects with the input end of amplification and filter circuit module, A/D change-over circuit module is formed primarily of chip AD654.The utility model circuit structure is simple, and realize cost low, stirring machine current acquisition precision is high, and stirring machine current delivery real-time is good, and functional reliability is high, practical.
Description
Technical field
The utility model belongs to homogeneity of concrete monitoring technical field, is specifically related to the working current collection of a kind of homogeneity of concrete on-line monitoring stirring machine and counts the road that conducts electricity.
Background technology
The middle and later periods eighties 20th century, the application of high performance concrete dual mixing technology and the implementation of ready-mixed concrete, greatly improve the aggregate level of China's concrete technology, but the application of high fluidity pump concrete, the early crack brought to concrete and volume instability problem are also very serious.For this reason, except optimised coagulation soil mix-design, select high-quality raw material, improve except concrete pouring construction technique, strictly the quality of concrete mixing station fresh concrete is monitored, cause the concern of countries in the world insider, carried out a large amount of Test And Research Works.
For ensureing concrete construction quality and being easy to construction, concrete batching system should have good workability.Workability is one of leading indicator of workability, is the base attribute that fresh concrete should have, and characterizes the homogeney before concreting, homogeneity, also has conclusive impact to concrete intensity, permanance etc.To the method for testing of concrete workability, through investigation statistics, various countries amount to about more than 50 kinds, that formally lists codes and standards in has 13 kinds of methods: slump consistancy test (EN 12350-2, ASTM C143), compaction coefficient experiment (BS 1881-103), K-slump consistancy test (ASTM C1362-97), kelvin ball test (ASTM C360-92), compaction test (EN 12350-4), Vebe consistometer (ASTM C1170), powers improves test (US army, CRD C6-74), gutter channel test (DIN 1048, EN 12350-5), reverse slump cone test (BS 1924:1975, BS1377:1975), strengthen compaction test (Nordtest-Build427), multiple single-spot testing (ACI309, 1R-93).The quality of evaluation concrete workability, engineering construction on-the-spot the most frequently used be that concrete slump is detected, the spindle comprehensive parameter detector also having indivedual engineering to use electric hand drill to add gear sonde-type carries out indirect inspection.
There is following problem in these method of testings above-mentioned: one is that test parameter is single, and Detection Information amount is few, well can not reflect the serviceability of fresh concrete; Two is that test job is many after fresh concrete goes out machine, is sampled detect by full-time testing crew, can not directly by blending station operator in concrete-agitating process, realize online, visual process detection; Three is that testing needs to purchase test apparatus, sensing element, measuring instrument etc., and instrument and equipment cost is high, complicated operation.
Concrete homogeneity refers to the degree of uniformity of each starting components distribution in concrete, and it has important impact to the performance such as mechanical property, permanance of the workability of fresh concrete and maturing.In order to solve Problems existing in the detection of fresh concrete workability, someone proposes and controls by monitoring stirring machine strength of current the imagination that fresh concrete goes out machine homogeneity.There is certain contacting in the power consumed when concrete homogeneity and stirring machine ready-mixed concrete, for the concrete of a certain match ratio, identical inventory, its homogeneity is poorer, and the resistance stirred stirring machine is larger, and the power that stirring machine consumes is larger, on the contrary, concrete homogeneity is better, and the resistance stirred stirring machine is less, and the power that stirring machine consumes is less.Power P=UI that stirring machine consumes, voltage is generally constant, constant can be regarded as, power is directly proportional to electric current, therefore, electric current when concrete homogeneity and stirring machine ready-mixed concrete has correlativity, the current value of stirring machine can be input in computer system and process, final image demonstrates concrete homogeneity situation, but how to gather the electric current of stirring machine exactly and be transferred to the key technical problem that computing machine is needs solution in real time, also do not have structure simple in prior art, realize cost low, current acquisition precision is high, current delivery real-time is good, the stirring machine working current collection that functional reliability is high and several road that conducts electricity.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, the working current collection of a kind of homogeneity of concrete on-line monitoring stirring machine is provided and counts the road that conducts electricity, its circuit structure is simple, realize cost low, stirring machine current acquisition precision is high, and stirring machine current delivery real-time is good, and functional reliability is high, practical, be convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the working current collection of a kind of homogeneity of concrete on-line monitoring stirring machine and several road that conducts electricity, it is characterized in that: comprise data collector and provide the power module of+12V voltage and-12V voltage for electricity consumption module each in circuit, and for the AC current sensor that detects the working current of mixer motor with to connect with data collector and for the RS-485 communication circuit module of connection data transceiver and computing machine, the model of described AC current sensor is I412F41, the input end of described data collector is connected to the signal conditioning circuit module for providing the clock circuit module of real-time clock and the signal for exporting AC current sensor to nurse one's health for data collector, described signal conditioning circuit module is made up of the amplification connected successively and filter circuit module and A/D change-over circuit module, the output terminal of described AC current sensor connects with the input end of amplification and filter circuit module, described A/D change-over circuit module is formed primarily of chip AD654.
Above-mentioned homogeneity of concrete on-line monitoring stirring machine working current collection and several road that conducts electricity, is characterized in that: described data collector is single chip computer AT mega8.
Above-mentioned homogeneity of concrete on-line monitoring stirring machine working current collection and several road that conducts electricity, is characterized in that: described RS-485 communication circuit module is formed primarily of chip MAX485.
Above-mentioned homogeneity of concrete on-line monitoring stirring machine working current collection and several road that conducts electricity, is characterized in that: described clock circuit module is formed primarily of clock chip DS1302.
Above-mentioned homogeneity of concrete on-line monitoring stirring machine working current collection and several road that conducts electricity, is characterized in that: described amplification and filter circuit module comprise chip LM358, nonpolar electric capacity C1, variable resistor VR1, and resistance R1, resistance R2 and resistance R3, one end of described resistance R1 is the input end IN_LB of amplification and filter circuit module and connects with the output terminal of AC current sensor, the other end of described resistance R1 connects with the 3rd pin of chip LM358, one end of described resistance R2, one end of resistance R3 and one end of nonpolar electric capacity C1 all connect with the 2nd pin of chip LM358, the other end ground connection of described resistance R2, the other end of described resistance R3 connects with one end of variable resistor VR1, the other end of described nonpolar electric capacity C1 and the other end of variable resistor VR1 all connect with the 1st pin of chip LM358, 1st pin of described chip LM358 is the output terminal OUT_LB of amplification and filter circuit module and connects with the input end of A/D change-over circuit module, 8th pin of described chip LM358 connects with+12V the voltage output end of power module, the 4th pin ground connection of described chip LM358.
Above-mentioned homogeneity of concrete on-line monitoring stirring machine working current collection and several road that conducts electricity, it is characterized in that: described A/D change-over circuit module also comprises diode D1, polar capacitor E1 and polar capacitor E2, nonpolar electric capacity C2, nonpolar electric capacity C3 and nonpolar electric capacity C4, and resistance R5, resistance R6 and resistance R7, one end of described resistance R5 is the input end IN_A/D of A/D change-over circuit module and connects with the output terminal of amplification and filter circuit module, the other end of described resistance R5 and one end of resistance R6 all connect with the 4th pin of chip AD654, the other end ground connection of described resistance R6, 3rd pin of described chip AD654 is by resistance R7 ground connection, 5th pin of described chip AD654, the anode of diode D1, one end of nonpolar electric capacity C2 and the negative pole of polar capacitor E2 all connect with-12V the voltage output end of power module, 2nd pin of described chip AD654, the negative electrode of diode D1, the other end of nonpolar electric capacity C2 and the equal ground connection of positive pole of polar capacitor E2, 6th pin of described chip AD654 is connected with the 7th pin of chip AD654 by nonpolar electric capacity C3, 8th pin of described chip AD654, the positive pole of polar capacitor E1 and one end of nonpolar electric capacity C4 all connect with+12V the voltage output end of power module, the negative pole of described polar capacitor E1 and the equal ground connection of the other end of nonpolar electric capacity C4, 1st pin of described chip AD654 is the output terminal OUT_A/D of A/D change-over circuit module and connects with the input end of data collector.
The utility model compared with prior art has the following advantages:
1, circuit structure of the present utility model is simple, reasonable in design, easy-to-connect.
2, the utility model data collector have employed single chip computer AT mega8, single chip computer AT mega8 inside is integrated with the storer of larger capacity and enriches powerful hardware interface circuit, possess over-all properties and the feature of AVR high-grade single-chip microcomputer MEGE series, but owing to have employed little pin package, so its price is only suitable with low-grade single-chip microcomputer, be applied in stirring machine current acquisition transmission system, user demand can be met well, and cost be low.
3, the utility model have employed the AC current sensor that model is I412F41, by matching with amplification and filter circuit module and A/D change-over circuit module, achieves high-precision stirring machine current acquisition.
4, the utility model adopts single chip computer AT mega8 and RS-485 communication circuit module to match, can real-time Transmission stirring machine electric current, contribute to the real time on-line monitoring realizing the homogeneous production of concrete, the working strength of operating personnel effectively can be reduced by the real time on-line monitoring of the homogeneous production of concrete, contribute to improving concrete qualification rate, increase concrete production efficiency.
5, functional reliability of the present utility model is high, practical, is convenient to promote the use of.
In sum, the utility model circuit structure is simple, and realize cost low, stirring machine current acquisition precision is high, and stirring machine current delivery real-time is good, and functional reliability is high, practical, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model amplification and filter circuit module.
Fig. 3 is the circuit theory diagrams of the utility model A/D change-over circuit module.
Description of reference numerals:
1-data collector; 2-power module; 3-AC current sensor;
4-RS-485 communication circuit module; 5-clock circuit module;
6-signal conditioning circuit module; 6-1-amplification and filter circuit module;
6-2-A/D change-over circuit module.
Embodiment
As shown in Figure 1, the utility model comprises data collector 1 and provides the power module 2 of+12V voltage and-12V voltage for electricity consumption module each in circuit, and for the AC current sensor 3 that detects the working current of mixer motor with to connect with data collector 1 and for the RS-485 communication circuit module 4 of connection data transceiver 1 and computing machine, the model of described AC current sensor 3 is I412F41, the input end of described data collector 1 is connected to the signal conditioning circuit module 6 for providing the clock circuit module 5 of real-time clock and the signal for exporting AC current sensor 3 to nurse one's health for data collector 1, described signal conditioning circuit module 6 is made up of the amplification connected successively and filter circuit module 6-1 and A/D change-over circuit module 6-2, the output terminal of described AC current sensor 3 connects with the input end of amplification and filter circuit module 6-1, described A/D change-over circuit module 6-2 is formed primarily of chip AD654.
In the present embodiment, described data collector 1 is single chip computer AT mega8, in AVR family, ATmega8 is a kind of very special single-chip microcomputer, its chip internal is integrated with the storer of larger capacity and enriches powerful hardware interface circuit, possess over-all properties and the feature of AVR high-grade single-chip microcomputer MEGE series, but owing to have employed little pin package, so its price is only suitable with low-grade single-chip microcomputer, be applied in stirring machine current acquisition transmission system, can meet user demand well, and cost is low.Described RS-485 communication circuit module 4 is formed primarily of chip MAX485.Described clock circuit module 5 is formed primarily of clock chip DS1302.
As shown in Figure 2, in the present embodiment, described amplification and filter circuit module 6-1 comprise chip LM358, nonpolar electric capacity C1, variable resistor VR1, and resistance R1, resistance R2 and resistance R3, one end of described resistance R1 is the input end IN_LB of amplification and filter circuit module 6-1 and connects with the output terminal of AC current sensor 3, the other end of described resistance R1 connects with the 3rd pin of chip LM358, one end of described resistance R2, one end of resistance R3 and one end of nonpolar electric capacity C1 all connect with the 2nd pin of chip LM358, the other end ground connection of described resistance R2, the other end of described resistance R3 connects with one end of variable resistor VR1, the other end of described nonpolar electric capacity C1 and the other end of variable resistor VR1 all connect with the 1st pin of chip LM358, 1st pin of described chip LM358 is the output terminal OUT_LB of amplification and filter circuit module 6-1 and connects with the input end of A/D change-over circuit module 6-2, 8th pin of described chip LM358 connects with+12V the voltage output end of power module 2, the 4th pin ground connection of described chip LM358.In described amplification and filter circuit module 6-1, the resistance of the resistance of variable resistor VR1 and the resistance of resistance R2 and resistance R3 determines the enlargement factor Gv of this amplification and filter circuit module 6-1 jointly, and concrete computing formula is Gv=1+ (VR1+R3)/R2.In described amplification and filter circuit module 6-1, nonpolar electric capacity C1 is used for carrying out filtering to signal.
As shown in Figure 3, in the present embodiment, described A/D change-over circuit module 6-2 also comprises diode D1, polar capacitor E1 and polar capacitor E2, nonpolar electric capacity C2, nonpolar electric capacity C3 and nonpolar electric capacity C4, and resistance R5, resistance R6 and resistance R7, one end of described resistance R5 is the input end IN_A/D of A/D change-over circuit module 6-2 and connects with the output terminal of amplification and filter circuit module 6-1, the other end of described resistance R5 and one end of resistance R6 all connect with the 4th pin of chip AD654, the other end ground connection of described resistance R6, 3rd pin of described chip AD654 is by resistance R7 ground connection, 5th pin of described chip AD654, the anode of diode D1, one end of nonpolar electric capacity C2 and the negative pole of polar capacitor E2 all connect with-12V the voltage output end of power module 2, 2nd pin of described chip AD654, the negative electrode of diode D1, the other end of nonpolar electric capacity C2 and the equal ground connection of positive pole of polar capacitor E2, 6th pin of described chip AD654 is connected with the 7th pin of chip AD654 by nonpolar electric capacity C3, 8th pin of described chip AD654, the positive pole of polar capacitor E1 and one end of nonpolar electric capacity C4 all connect with+12V the voltage output end of power module 2, the negative pole of described polar capacitor E1 and the equal ground connection of the other end of nonpolar electric capacity C4, 1st pin of described chip AD654 is the output terminal OUT_A/D of A/D change-over circuit module 6-2 and connects with the input end of data collector 1.In described A/D change-over circuit module 6-2, polar capacitor E1 and nonpolar electric capacity C4 is used for carrying out filtering to the+12V voltage that+12V voltage output end of power module 2 exports, polar capacitor E2 and nonpolar electric capacity C2 is used for carrying out filtering to the-12V voltage that-12V voltage output end of power module 2 exports, diode D1 causes infringement to chip AD654 for preventing reverse power connection, and resistance R5 and resistance R6 constitutes bleeder circuit.
The course of work of the present utility model is: stirring machine mixes and stirs in concrete process, the working current of AC current sensor 3 pairs of mixer motors detects in real time and detected current signal is exported to amplification and filter circuit module 6-1, amplification and filter circuit module 6-1 amplify the current signal that AC current sensor 3 exports and export to A/D change-over circuit module 6-2 after filtering, A/D change-over circuit module 6-2 exports to data collector 1 to after A/D conversion is carried out in amplification and filtered current signal, the current signal that data collector 1 is received again is transferred to computing machine by RS-485 communication circuit module 4 with clock circuit module 5 together with its real-time clock signal provided, for according to the Current calculation of stirring machine, computing machine judges that concrete homogeneity provides accurately data reliably.When computing machine judges to obtain concrete homogeneity according to the Current calculation of stirring machine and after showing, blending station operator is in concrete-agitating process, just can the homogeneity of real time and on line monitoring fresh concrete, effectively can reduce the working strength of operating personnel, contribute to improving concrete qualification rate, increase concrete production efficiency.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (6)
1. homogeneity of concrete on-line monitoring stirring machine working current collection and several road that conducts electricity, it is characterized in that: comprise data collector (1) and provide the power module (2) of+12V voltage and-12V voltage for electricity consumption module each in circuit, and for the AC current sensor (3) that detects the working current of mixer motor with to connect with data collector (1) and for the RS-485 communication circuit module (4) of connection data transceiver (1) with computing machine, the model of described AC current sensor (3) is I412F41, the input end of described data collector (1) is connected to the signal conditioning circuit module (6) for providing the clock circuit module (5) of real-time clock and the signal for exporting AC current sensor (3) to nurse one's health for data collector (1), described signal conditioning circuit module (6) is made up of the amplification connected successively and filter circuit module (6-1) and A/D change-over circuit module (6-2), the output terminal of described AC current sensor (3) connects with the input end of amplification and filter circuit module (6-1), described A/D change-over circuit module (6-2) is formed primarily of chip AD654.
2., according to homogeneity of concrete on-line monitoring stirring machine according to claim 1 working current collection and several road that conducts electricity, it is characterized in that: described data collector (1) is single chip computer AT mega8.
3., according to homogeneity of concrete on-line monitoring stirring machine according to claim 1 working current collection and several road that conducts electricity, it is characterized in that: described RS-485 communication circuit module (4) is formed primarily of chip MAX485.
4., according to homogeneity of concrete on-line monitoring stirring machine according to claim 1 working current collection and several road that conducts electricity, it is characterized in that: described clock circuit module (5) is formed primarily of clock chip DS1302.
5. according to homogeneity of concrete on-line monitoring stirring machine according to claim 1 working current collection and several road that conducts electricity, it is characterized in that: described amplification and filter circuit module (6-1) comprise chip LM358, nonpolar electric capacity C1, variable resistor VR1, and resistance R1, resistance R2 and resistance R3, one end of described resistance R1 is the input end IN_LB of amplification and filter circuit module (6-1) and connects with the output terminal of AC current sensor (3), the other end of described resistance R1 connects with the 3rd pin of chip LM358, one end of described resistance R2, one end of resistance R3 and one end of nonpolar electric capacity C1 all connect with the 2nd pin of chip LM358, the other end ground connection of described resistance R2, the other end of described resistance R3 connects with one end of variable resistor VR1, the other end of described nonpolar electric capacity C1 and the other end of variable resistor VR1 all connect with the 1st pin of chip LM358, 1st pin of described chip LM358 is the output terminal OUT_LB of amplification and filter circuit module (6-1) and connects with the input end of A/D change-over circuit module (6-2), 8th pin of described chip LM358 connects with+12V the voltage output end of power module (2), the 4th pin ground connection of described chip LM358.
6. according to homogeneity of concrete on-line monitoring stirring machine according to claim 1 working current collection and several road that conducts electricity, it is characterized in that: described A/D change-over circuit module (6-2) also comprises diode D1, polar capacitor E1 and polar capacitor E2, nonpolar electric capacity C2, nonpolar electric capacity C3 and nonpolar electric capacity C4, and resistance R5, resistance R6 and resistance R7, one end of described resistance R5 is the input end IN_A/D of A/D change-over circuit module (6-2) and connects with the output terminal of amplification and filter circuit module (6-1), the other end of described resistance R5 and one end of resistance R6 all connect with the 4th pin of chip AD654, the other end ground connection of described resistance R6, 3rd pin of described chip AD654 is by resistance R7 ground connection, 5th pin of described chip AD654, the anode of diode D1, one end of nonpolar electric capacity C2 and the negative pole of polar capacitor E2 all connect with-12V the voltage output end of power module (2), 2nd pin of described chip AD654, the negative electrode of diode D1, the other end of nonpolar electric capacity C2 and the equal ground connection of positive pole of polar capacitor E2, 6th pin of described chip AD654 is connected with the 7th pin of chip AD654 by nonpolar electric capacity C3, 8th pin of described chip AD654, the positive pole of polar capacitor E1 and one end of nonpolar electric capacity C4 all connect with+12V the voltage output end of power module (2), the negative pole of described polar capacitor E1 and the equal ground connection of the other end of nonpolar electric capacity C4, 1st pin of described chip AD654 is the output terminal OUT_A/D of A/D change-over circuit module (6-2) and connects with the input end of data collector (1).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614289A (en) * | 2015-02-06 | 2015-05-13 | 河海大学常州校区 | Concrete viscosity monitoring system |
| CN105699751A (en) * | 2016-02-05 | 2016-06-22 | 刘万更 | Current collecting device |
| CN105958736A (en) * | 2016-05-26 | 2016-09-21 | 江汉大学 | Device used for monitoring motor |
| CN108600243A (en) * | 2018-05-03 | 2018-09-28 | 威胜信息技术股份有限公司 | Communication means based on 485 buses and 645 communication protocols and its electric energy meter |
| CN114405384A (en) * | 2021-02-02 | 2022-04-29 | 上海品致测控技术有限公司 | Magnetic stirring controller |
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2014
- 2014-10-14 CN CN201420594093.0U patent/CN204116447U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614289A (en) * | 2015-02-06 | 2015-05-13 | 河海大学常州校区 | Concrete viscosity monitoring system |
| CN105699751A (en) * | 2016-02-05 | 2016-06-22 | 刘万更 | Current collecting device |
| CN105958736A (en) * | 2016-05-26 | 2016-09-21 | 江汉大学 | Device used for monitoring motor |
| CN105958736B (en) * | 2016-05-26 | 2019-10-08 | 江汉大学 | A kind of device monitoring motor |
| CN108600243A (en) * | 2018-05-03 | 2018-09-28 | 威胜信息技术股份有限公司 | Communication means based on 485 buses and 645 communication protocols and its electric energy meter |
| CN114405384A (en) * | 2021-02-02 | 2022-04-29 | 上海品致测控技术有限公司 | Magnetic stirring controller |
| CN114405384B (en) * | 2021-02-02 | 2024-03-26 | 上海品致测控技术有限公司 | Magnetic stirring controller |
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