CN103344450A - Load simulator - Google Patents

Load simulator Download PDF

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Publication number
CN103344450A
CN103344450A CN2013102977308A CN201310297730A CN103344450A CN 103344450 A CN103344450 A CN 103344450A CN 2013102977308 A CN2013102977308 A CN 2013102977308A CN 201310297730 A CN201310297730 A CN 201310297730A CN 103344450 A CN103344450 A CN 103344450A
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CN
China
Prior art keywords
resistance
load
input end
adjustable
bridge type
Prior art date
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Pending
Application number
CN2013102977308A
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Chinese (zh)
Inventor
吴凤岐
陆秀生
穆兆辉
沈辉
林剑锋
徐宏伟
赵阿朋
张美玲
黄海华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China General Nuclear Power Corp
China Nuclear Power Technology Research Institute Co Ltd
Lingao Nuclear Power Co Ltd
Original Assignee
China General Nuclear Power Corp
China Nuclear Power Technology Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China General Nuclear Power Corp, China Nuclear Power Technology Research Institute Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN2013102977308A priority Critical patent/CN103344450A/en
Publication of CN103344450A publication Critical patent/CN103344450A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a load simulator. The load stimulator comprises a weighing sensor and a resistance adjustor, the weighing sensor comprises a Wheatstone full-bridge type bridge circuit, each bridge arm of the Wheatstone full-bridge type bridge circuit is connected with a fixed resistor, two opposite connecting points of the Wheatstone full-bridge type bridge circuit form a first input end and a second input end, and the other two opposite connecting points of the Wheatstone full-bridge type bridge circuit form a first output end and a second output end. The resistance adjustor is connected between the first input end and the second input end, the resistance adjuster is provided with an adjusting end, the adjusting end can adjust and change the output resistance value of the resistance adjustor, the adjusting end is connected with the first output end, and the resistance value output by the resistance adjuster is changed through adjustment of the adjusting end, so that the output signals of the Wheatstone full-bridge type bridge circuit can be changed. The load stimulator aims to achieve simulation under the no-load condition and adjustment under the loading condition of the load stimulator to simulate various failure conditions of a nuclear fuel transportation storage system, and the load stimulator is simple in circuit, exquisite in design, powerful in function, low in cost, simple and easy to use and operate, and good in universality.

Description

Load simulated device
Technical field
The present invention relates to a kind of load simulated device, relate in particular to a kind of load simulated device that is applicable to nuclear fuel transportation storage system.
Background technology
Coal, oil, the utilization of fossil energies such as rock gas, to human survival, development, the progressive tremendous influence that produced, but after entering 21 century, people pay attention to the quality of living environment and living space more, use the greenhouse effect that fossil energy produces in a large number, the acid rain phenomenon has caused havoc to environment for human survival, simultaneously, fossil energy is through long-term exploitation, its resource is exhausted day by day, be not enough to support development of global economy, in the process of seeking substitute energy, people begin more and more to pay attention to the application of nuclear energy, and the topmost application of nuclear energy is exactly nuclear energy power generation.
Wherein, nuclear power station be nuclear energy power generation the most basic also be most important facility, nuclear power station substantially can be divided into two parts: a part is to utilize nuclear energy to produce the nuclear island of steam, comprises reactor assembly and a circuit system; Another part is the conventional island that utilizes steam-electric power, comprises steam turbine generator system.In order to guarantee the security of nuclear power station, be provided with various security systems in it, the various device to using in the nuclear power station also will guarantee the security of its use simultaneously.
As everyone knows, in nuclear power station, usually need nuclear fuel is transported and stores, mainly comprise three seed devices for the system that nuclear fuel is transported storage at present, it is fuel manipulator crane, transporter and spentnuclear fuel pond crane, these equipment all needed to carry out simulation test before formal the use, affirmation equipment normally just can come into operation, but existing analog detection method is all comparatively difficult in operation, for example utilize the PLC program to simulate and debug by special technician, therefore need the technician of higher level just can finish, the comparatively complicated inconvenience of operation, and manpower, the material resources cost is all higher.
Therefore, be necessary to provide a kind of simple in structure, easy and simple to handle, cost is low, the load simulated device of highly versatile to be to solve the deficiencies in the prior art.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, easy and simple to handle, cost is low, the load simulated device of highly versatile.
For achieving the above object, technical scheme of the present invention is: a kind of load simulated device is provided, comprises LOAD CELLS and resistance controller, wherein, described LOAD CELLS comprises a favour stone full-bridge type bridge diagram,
Be connected with fixed resistance respectively in each brachium pontis of described favour stone full-bridge type bridge diagram, and two relative tie points of described favour stone full-bridge type bridge diagram form first input end and second input end, the two relative tie points in addition of described favour stone full-bridge type bridge diagram form first output terminal and second output terminal, described resistance controller is connected in the first input end of described favour stone full-bridge type bridge diagram, between second input end, and described resistance controller has an adjustable side, the output resistance that changes described resistance controller can be regulated in described adjustable side, described adjustable side is connected with first output terminal of described favour stone full-bridge type bridge diagram, by regulating described adjustable side changing the resistance value of described resistance controller output, thereby can change the output signal of described favour stone full-bridge type bridge diagram.
Preferably, described favour stone full-bridge type bridge diagram comprises end to end first resistance, second resistance, the 3rd resistance and the 4th resistance successively, the common connection end of described first resistance and described second resistance is first output terminal, the common connection end of described the 3rd resistance and described the 4th resistance is second output terminal, the common connection end of described second resistance and described the 3rd resistance is first input end, and the common connection end of described first resistance and described the 4th resistance is second input end.
Preferably, described resistance controller comprises first adjustable resistance, and the two ends of described first adjustable resistance are connected with described first input end, second input end respectively, and the sliding contact of described first adjustable resistance is connected with described first output terminal; The sliding contact that changes first adjustable resistance can change the resistance value of its output, thereby change the current potential of described first output terminal, variation by the potential difference (PD) between first output terminal, second output terminal, the load change of LOAD CELLS can be detected, therefore the regulatory function of load simulated device can be realized by regulating first adjustable resistance.
Preferably, described first adjustable resistance is rotational potentiometer, so that regulate more convenient.
Preferably, described resistance controller comprises second adjustable resistance and the 3rd adjustable resistance, and described second adjustable resistance, the 3rd adjustable resistance are connected in series between the first input end, second input end of described favour stone full-bridge type bridge diagram; And an end of described second adjustable resistance is connected in the sliding contact of described the 3rd adjustable resistance, its other end is connected with second input end of described favour stone full-bridge type bridge diagram, and the sliding contact of described second adjustable resistance is connected in first output terminal of described favour stone full-bridge type bridge diagram; One end of described the 3rd adjustable resistance is connected with the first input end of described favour stone full-bridge type bridge diagram, and its other end is idle; Can realize coarse adjustment to load simulated device by second adjustable resistance, fine setting to load simulated device can be realized by the 3rd adjustable resistance again, thereby any load value in the load simulated device specialized range can be regulated continuously, convenient and swift, and coarse adjustment and fine setting match, and realize accurately regulating.
Preferably, described resistance controller also comprises two switches, wherein the two ends of a described switch are connected with an end of described first input end and the 3rd adjustable resistance respectively, the two ends of another described switch are connected with the other end of described second input end and second adjustable resistance respectively, operation or commissioning staff can be by the control ends of toggle switch, manual unlocking is gone into or closed load simulated device, and is easy and simple to handle.
Preferably, described second, third adjustable resistance is rotational potentiometer, and it makes adjusting more convenient.
Preferably, described resistance controller removably is connected on the described LOAD CELLS, and described resistance controller has aviation plug, can insert LOAD CELLS quickly and easily, inserts more convenient.
Compared with prior art, because load simulated device of the present invention, comprise LOAD CELLS and resistance controller, wherein, described LOAD CELLS comprises a favour stone full-bridge type bridge diagram, be connected with fixed resistance respectively in each brachium pontis of described favour stone full-bridge type bridge diagram, and two relative tie points of described favour stone full-bridge type bridge diagram form first input end and second input end, the two relative tie points in addition of described favour stone full-bridge type bridge diagram form first output terminal and second output terminal, described resistance controller is connected in the first input end of described favour stone full-bridge type bridge diagram, between second input end, and described resistance controller has an adjustable side, the output resistance that changes described resistance controller can be regulated in described adjustable side, described adjustable side is connected with first output terminal of described favour stone full-bridge type bridge diagram, by regulating described adjustable side changing the resistance value of described resistance controller output, thereby can change the output signal of described favour stone full-bridge type bridge diagram; Therefore, can make load simulated device under unloaded condition, carry out the simulation of various load, also can realize load simulated device in the adjusting that has under the carrier strip spare load, thus the simulation no-load, have carry, overload, absolute overload, underload, absolute state such as underload, various failure conditions with simulation nuclear fuel transportation storage system, can and normally move under these situations of detection system, and the circuit of load simulated device be simple, designs ingenious, function is strong, cost is low, use easy and simple to handle, highly versatile.
Description of drawings
Fig. 1 is the ultimate principle figure of the LOAD CELLS of the load simulated device of the present invention.
Fig. 2 is the schematic diagram of an embodiment of the load simulated device of the present invention.
Fig. 3 is the schematic diagram of another embodiment of the load simulated device of the present invention.
Fig. 4 is the external structure synoptic diagram of the resistance controller of the load simulated device of the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label represents similar elements in the accompanying drawing.Load simulated device of the present invention is applicable in the nuclear fuel transportation storage system, the subset---fuel manipulator crane, transporter or the spentnuclear fuel pond crane etc. that for example are used for nuclear fuel transportation storage system, certainly not as limit, described load simulated device can also be generalized in the LOAD CELLS that adopts the bridge circuit design, highly versatile.Be elaborated below in conjunction with structure and the principle of accompanying drawing to the load simulated device of the present invention.
As Fig. 1-shown in Figure 4, load simulated device provided by the present invention, comprise LOAD CELLS and resistance controller, wherein, LOAD CELLS is arranged at the fuel manipulator crane of nuclear fuel transportation storage system, on transporter or the spentnuclear fuel pond crane, resistance controller removably is connected with said apparatus, when resistance controller is connected on the said apparatus, it electrically connects with the LOAD CELLS that is arranged at said apparatus, therefore, can change the resistance value of its output by the adjusting resistance controller, thereby can change the output signal of described LOAD CELLS, realization is to the simulation of the various load of LOAD CELLS, with the fault of simulation nuclear fuel transportation storage system under various load conditions.
Particularly, described LOAD CELLS comprises a favour stone full-bridge type bridge diagram, be connected with fixed resistance respectively in each brachium pontis of described favour stone full-bridge type bridge diagram, and two relative tie points of described favour stone full-bridge type bridge diagram form first input end and second input end, and the two relative tie points in addition of described favour stone full-bridge type bridge diagram form first output terminal and second output terminal; Described resistance controller is connected in the first input end of described favour stone full-bridge type bridge diagram, between second input end, and described resistance controller has an adjustable side, the output resistance that changes described resistance controller can be regulated in described adjustable side, described adjustable side is connected with first output terminal of described favour stone full-bridge type bridge diagram, by regulating described adjustable side to change the resistance value of described resistance controller output, thereby can change the output signal of described favour stone full-bridge type bridge diagram, after the processing of described output signal through the signal transmitting device, obtain required voltage or current signal, can detect corresponding load by detecting this voltage or current signal, therefore, can simulate the various load conditions of nuclear fuel transportation storage system by regulating resistance controller, with the failure condition of simulation nuclear fuel transportation storage system under various load.
Below in conjunction with Fig. 1-shown in Figure 3, the ultimate principle of LOAD CELLS of the present invention and the specific embodiment of the load simulated device of the present invention are described respectively.
As shown in Figure 1, described LOAD CELLS adopts the strain resistor formation bridge circuit that four resistances equate usually.Particularly, described LOAD CELLS is a favour stone full-bridge type bridge diagram, this Hui Sitong full-bridge type bridge diagram comprises end to end first resistance R 1 successively, second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4, described first resistance R 1 is first output terminal with the common connection end A of described second resistance R 2, described the 3rd resistance R 3 is second output terminal with the common connection end C of described the 4th resistance R 4, described second resistance R 2 is first input end with the common connection end D of described the 3rd resistance R 3, and described first resistance R 1 is second input end with the common connection end B of described the 4th resistance R 4.
During work, LOAD CELLS is imported+10V voltage usually, when load acts on LOAD CELLS, the stressed generation deformation of the strain resistor of LOAD CELLS inside, deformation makes the change in resistance of strain resistor, and change in resistance changes the potential difference (PD) between A, the C point in the above-mentioned favour stone full-bridge type bridge diagram, namely, potential difference (PD) between first output terminal, second output terminal is changed, therefore, LOAD CELLS output milliampere or millivolt signal; On the contrary, when no-load acted on LOAD CELLS, the strain resistor of LOAD CELLS inside did not stress, and the resistance of four strain resistors is identical, and the potential difference (PD) between A, the C point approximates 0V, and the LOAD CELLS output signal is about 0; Hence one can see that, can detect load condition on it according to the output signal of LOAD CELLS.
Based on the ultimate principle of above-mentioned LOAD CELLS, below in conjunction with Fig. 2-shown in Figure 4, the different embodiment of the load simulated device of the present invention are described respectively.
As shown in Figure 2, in first embodiment of the load simulated device of the present invention, described LOAD CELLS comprises a favour stone full-bridge type bridge diagram, be connected with fixed resistance respectively in each brachium pontis of described favour stone full-bridge type bridge diagram, and two relative tie points of described favour stone full-bridge type bridge diagram form first input end and second input end, and the two relative tie points in addition of described favour stone full-bridge type bridge diagram form first output terminal and second output terminal; Particularly, described favour stone full-bridge type bridge diagram comprises end to end first resistance R 1, second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4 successively, described first resistance R 1 is first output terminal with the common connection end A of described second resistance R 2, described the 3rd resistance R 3 is second output terminal with the common connection end C of described the 4th resistance R 4, described second resistance R 2 is first input end with the common connection end D of described the 3rd resistance R 3, and described first resistance R 1 is second input end with the common connection end B of described the 4th resistance R 4.
Described resistance controller is connected between the first input end, second input end of described favour stone full-bridge type bridge diagram, be that resistance controller is connected between D, the B, and described resistance controller has an adjustable side, the output resistance that changes described resistance controller can be regulated in described adjustable side, and described adjustable side is connected with first output terminal (being the A point) of described favour stone full-bridge type bridge diagram; Particularly, in the present embodiment, described resistance controller is one first adjustable resistance R5, the two ends of the described first adjustable resistance R5 are connected with described first input end and second input end respectively, namely the two ends of the first adjustable resistance R5 are connected to D, B 2 points, and the sliding contact of the described first adjustable resistance R5 is connected with described first output terminal (being the A point), the sliding contact that changes the first adjustable resistance R5 can change the resistance value of its output, thereby change the current potential of described first output terminal (being the A point), by detecting first output terminal, the variation of the potential difference (PD) between second output terminal, namely detect A, the variation of the potential difference (PD) between 2 of the C, but the load variations of test load simulator, also namely, by regulating the first adjustable resistance R5, can realize the simulation to the various load of load simulated device.
Preferably, the first adjustable resistance R5 is a rotational potentiometer so that regulate more convenient, certainly not as limit.
During work, by regulating the sliding contact of the first adjustable resistance R5, can change the resistance value of described first adjustable resistance R5 output, change first output terminal (being the A point) current potential thereby regulate, and second output terminal (being the C point) current potential is constant, so the potential difference (PD) between first, second output terminal (being A, C point) can change; Therefore, realize that by what regulate the first adjustable resistance R5 load simulated device is to the analog functuion of different loads, be used for the different loads of simulation nuclear fuel transportation storage system in specialized range, to detect the failure condition of this nuclear fuel transportation storage system under various load-up conditions.
For further realizing the accurate adjusting of load simulated device, consult Fig. 3, shown in Figure 4 below, the preferred embodiment of the load simulated device of the present invention is described.
As shown in Figure 3, Figure 4, the difference of second embodiment of the load simulated device of the present invention and above-mentioned first embodiment is the setting of resistance controller.Particularly, described resistance controller comprises the second adjustable resistance R6 and the 3rd adjustable resistance R7, and the described second adjustable resistance R6, the 3rd adjustable resistance R7 are connected in series between the first input end, second input end of described favour stone full-bridge type bridge diagram; And the end of the described second adjustable resistance R6 is connected in the sliding contact of described the 3rd adjustable resistance R7, its other end is connected with second input end (being the B point) of described favour stone full-bridge type bridge diagram, and the sliding contact of the described second adjustable resistance R6 is connected in first output terminal (being the A point) of described favour stone full-bridge type bridge diagram; The end of described the 3rd adjustable resistance R7 is connected with the first input end (being the D point) of described favour stone full-bridge type bridge diagram, and its other end is idle; Can realize coarse adjustment to load simulated device by the second adjustable resistance R6, can realize fine setting to load simulated device by the 3rd adjustable resistance R7 again, thereby can regulate load continuously with any load value in the simulation specialized range, coarse adjustment and fine setting match, realize accurately regulating, and convenient and swift during operation.
Preferably, the described second adjustable resistance R6, the 3rd adjustable resistance R7 are rotational potentiometer, to carry out coarse adjustment and fine setting more easily.
In addition, described resistance controller also comprises two switches, wherein the two ends of a described switch are connected with the end of described first input end and the 3rd adjustable resistance R7 respectively, the two ends of another described switch are connected with the other end of described second input end and the second adjustable resistance R6 respectively, operation or commissioning staff can be by the control ends of toggle switch, manual unlocking or close load simulated device, easy and simple to handle.
Continue to consult shown in Figure 4, the external structure of described resistance controller is described.
Particularly, described resistance controller has a shell body 11, described shell body 11 is provided with coarse adjustment knob 12 and vernier adjustment knob 13, two buttons respectively with the second adjustable resistance R6, the 3rd adjustable resistance R7 is corresponding, and also be provided with switching manipulation bar 14 on the shell body 11, this switching manipulation bar 14 is connected with the control end of two switches, one connecting line 15 is connected on the shell body 11, and the circuit that arranges in an end of connecting line 15 and the shell body 11 electrically connects, the other end of connecting line 15 is provided with aviation plug 16, be used for the fuel manipulator crane with nuclear fuel transportation storage system, transporter removably is connected with spentnuclear fuel pond crane, thereby realizes and the electric connection that is arranged at the LOAD CELLS in the said equipment; Described resistance controller has aviation plug 16, can insert LOAD CELLS quickly and easily, inserts more convenient.
During work, operation or commissioning staff can pass through toggle switch control lever 14, and manual unlocking or close load simulated device is easy and simple to handle; And by rotation coarse adjustment knob 12 and vernier adjustment knob 13, can regulate load continuously, any load value in the simulation specialized range, thereby make load simulated device realize the simulation to any load under the unloaded condition of nuclear fuel loading and unloading material system, and the adjusting that realizes load under the carrier strip spare can be with, advance to simulate no-load, have carry, overload, absolute overload, underload, absolute state such as underload, thereby realize the simulation of nuclear fuel loading and unloading material system load failure.
Below in conjunction with Fig. 3, shown in Figure 4, be example with second embodiment of the load simulated device of the present invention, the load simulated device course of work of the present invention and principle are described.
Nuclear fuel transportation storage system is before using, need simulate its load condition, and need simulate having under the situation of load contingent various faults it, with the ruuning situation of detection system under various failure conditions, therefore, need utilize the load simulated device of the present invention that its various load are simulated.
At first, the resistance controller of load simulated device is plugged in nuclear fuel transportation storage system, for example be connected in fuel manipulator crane, transporter or spentnuclear fuel pond crane etc., thereby resistance controller and the LOAD CELLS that is arranged in the said equipment are electrically connected, because resistance controller adopts aviation plug 16 designs, it is convenient to insert.
Then, nuclear fuel transportation storage system is carried out the simulation of load under unloaded condition, operation or commissioning staff are by toggle switch control lever 14, the load simulated device of manual unlocking, and by by rotation coarse adjustment knob 12 and vernier adjustment knob 13, can regulate load continuously, the any load value of simulation nuclear fuel transportation storage system in specialized range, realize the simulation to its load under unloaded condition of nuclear fuel transportation storage system, and have coarse adjustment knob 12 and vernier adjustment knob 13, convenient to operation.
Then, the possible breakdown situation of nuclear fuel transportation storage system under band carrier strip spare simulated, namely under the condition that system's band carries, by regulating the coarse adjustment knob 12 of resistance controller, vernier adjustment knob 13 is regulated the resistance value of its output, advance to simulate no-load, have and carry, overload, absolute overload, underload, absolute situation such as underload, for example, the load capacity of suppose core fuel transport storage system is 500kg, by regulating resistance controller, can simulation system overload (600kg), absolute overload (700kg), underload (400kg), the situation of definitely underload (300kg) and no-load (load drops), can normally move under these situations with detection system, realize the simulation of nuclear fuel loading and unloading material system load failure.Be appreciated that ground, above-mentioned load value only is used for the present invention is illustrated, and it can not be as the foundation of restriction embodiment of the present invention.
Because load simulated device of the present invention, comprise LOAD CELLS and resistance controller, wherein, described LOAD CELLS comprises a favour stone full-bridge type bridge diagram, be connected with fixed resistance respectively in each brachium pontis of described favour stone full-bridge type bridge diagram, and two relative tie points of described favour stone full-bridge type bridge diagram form first input end and second input end, the two relative tie points in addition of described favour stone full-bridge type bridge diagram form first output terminal and second output terminal, described resistance controller is connected in the first input end of described favour stone full-bridge type bridge diagram, between second input end, and described resistance controller has an adjustable side, the output resistance that changes described resistance controller can be regulated in described adjustable side, described adjustable side is connected with first output terminal of described favour stone full-bridge type bridge diagram, by regulating described adjustable side changing the resistance value of described resistance controller output, thereby can change the output signal of described favour stone full-bridge type bridge diagram; Therefore, can make load simulated device under unloaded condition, carry out the simulation of various load, also can realize load simulated device in the adjusting that has under the carrier strip spare load, thus the simulation no-load, have carry, overload, absolute overload, underload, absolute state such as underload, various failure conditions with simulation nuclear fuel transportation storage system, can and normally move under these situations of detection system, and the circuit of load simulated device be simple, designs ingenious, function is strong, cost is low, use easy and simple to handle, highly versatile.
It should be noted that, the load simulated device of the present invention is not limited in nuclear fuel transportation storage system and uses, it also can be according to actual needs, be used for similar equipment, the weighing system design basically identical of for example lifting industry weighing system and nuclear fuel transportation storage system, therefore, this load simulated device is equally applicable to the lifting industry, this is well known to those of ordinary skill in the art, no longer is described in detail at this.
Above disclosed only is the preferred embodiments of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to the present patent application claim still belongs to the scope that the present invention is contained.

Claims (8)

1. load simulated device, comprise LOAD CELLS and resistance controller, it is characterized in that: described LOAD CELLS comprises a favour stone full-bridge type bridge diagram, be connected with fixed resistance respectively in each brachium pontis of described favour stone full-bridge type bridge diagram, and two relative tie points of described favour stone full-bridge type bridge diagram form first input end and second input end, the two relative tie points in addition of described favour stone full-bridge type bridge diagram form first output terminal and second output terminal, described resistance controller is connected in the first input end of described favour stone full-bridge type bridge diagram, between second input end, and described resistance controller has an adjustable side, the output resistance that changes described resistance controller can be regulated in described adjustable side, described adjustable side is connected with first output terminal of described favour stone full-bridge type bridge diagram, by regulating described adjustable side changing the resistance value of described resistance controller output, thereby can change the output signal of described favour stone full-bridge type bridge diagram.
2. load simulated device as claimed in claim 1, it is characterized in that: described favour stone full-bridge type bridge diagram comprises end to end first resistance, second resistance, the 3rd resistance and the 4th resistance successively, the common connection end of described first resistance and described second resistance is first output terminal, the common connection end of described the 3rd resistance and described the 4th resistance is second output terminal, the common connection end of described second resistance and described the 3rd resistance is first input end, and the common connection end of described first resistance and described the 4th resistance is second input end.
3. load simulated device as claimed in claim 1, it is characterized in that: described resistance controller comprises first adjustable resistance, the two ends of described first adjustable resistance are connected with described first input end, second input end respectively, and the sliding contact of described first adjustable resistance is connected with described first output terminal.
4. load simulated device as claimed in claim 3, it is characterized in that: described first adjustable resistance is rotational potentiometer.
5. load simulated device as claimed in claim 1, it is characterized in that: described resistance controller comprises second adjustable resistance and the 3rd adjustable resistance, and described second adjustable resistance, the 3rd adjustable resistance are connected in series between the first input end, second input end of described favour stone full-bridge type bridge diagram; And an end of described second adjustable resistance is connected in the sliding contact of described the 3rd adjustable resistance, its other end is connected with second input end of described favour stone full-bridge type bridge diagram, and the sliding contact of described second adjustable resistance is connected in first output terminal of described favour stone full-bridge type bridge diagram; One end of described the 3rd adjustable resistance is connected with the first input end of described favour stone full-bridge type bridge diagram, and its other end is idle.
6. load simulated device as claimed in claim 5, it is characterized in that: described resistance controller also comprises two switches, wherein the two ends of a described switch are connected with an end of described first input end and the 3rd adjustable resistance respectively, and the two ends of another described switch are connected with the other end of described second input end and second adjustable resistance respectively.
7. load simulated device as claimed in claim 5, it is characterized in that: described second, third adjustable resistance is rotational potentiometer.
8. load simulated device as claimed in claim 1, it is characterized in that: described resistance controller removably is connected on the described LOAD CELLS.
CN2013102977308A 2013-07-16 2013-07-16 Load simulator Pending CN103344450A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157809A (en) * 2015-05-25 2015-12-16 平顶山电子衡器制造有限公司 Universal weighing signal generator
CN105277112A (en) * 2015-11-18 2016-01-27 招商局重庆交通科研设计院有限公司 A half-bridge Wheatstone bridge strain measuring system and method capable of eliminating conductor resistance influence
CN105277112B (en) * 2015-11-18 2018-04-03 招商局重庆交通科研设计院有限公司 Eliminate half-bridge Wheatstone bridge strain measurement system and the method that conductor resistance influences
CN107063410A (en) * 2017-04-12 2017-08-18 无锡研测技术有限公司 Resistance-strain type digital weighing sensor with fault detect
CN107063410B (en) * 2017-04-12 2019-02-15 无锡研测技术有限公司 Resistance-strain type digital weighing sensor with fault detection
CN112125082A (en) * 2020-08-17 2020-12-25 湖州慧微电子科技有限公司 Elevator weighing measurement method based on strain induction

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