CN204612849U - A kind of high precision cable tension test instrument of magnetic conduction sex cords - Google Patents
A kind of high precision cable tension test instrument of magnetic conduction sex cords Download PDFInfo
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- CN204612849U CN204612849U CN201520305876.7U CN201520305876U CN204612849U CN 204612849 U CN204612849 U CN 204612849U CN 201520305876 U CN201520305876 U CN 201520305876U CN 204612849 U CN204612849 U CN 204612849U
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- magnetic conduction
- tension test
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- high precision
- cable tension
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Abstract
The utility model discloses a kind of high precision cable tension test instrument of magnetic conduction sex cords, comprise low noise power supply management devices, increasing apparatus, dropping equipment, linear voltage regulation device, magnetic flux transducer, metal-oxide-semiconductor, two differential operational amplifiers, two analog to digital converters, central processing unit, 485 buffer circuits, network interface card and SD card memorys.In the utility model, tested cable body does not need clear and definite boundary condition, as long as almost magnetic conduction sex cords just can use, range of application is extensive especially; Each original paper excellent in durability, can use by long-term field; Adopt 18 precision high-speed AD, precision high measurement is accurate; Adopt technical grade magnetic coupling to isolate 485 special chips, isolation voltage, up to 5000V, can resist 15kV electrostatic interference; Adopt 10/100Mb/s adaptive industrial level network card chip, error-free transmission can reach 150 meters.
Description
Technical field
The utility model relates to the real-time cable force monitoring equipment of a kind of rod iron, reinforcing pull rod, cable wire, particularly relates to a kind of high precision cable tension test instrument of magnetic conduction sex cords.
Background technology
Along with the development of each building engineering fields such as building, road, bridge, water conservancy, engineering safety has become the field paid close attention to and pay attention to of future development.And safety detection and monitoring and the early warning information that provides thus are undoubtedly the most important thing of future development.
Traditional cable tension test, use vibratory drilling method test, 1/2 length points of the rope namely fixed at two ends installs an acceleration transducer.Rope produces vibration under the natural excitations such as wind load, because the two ends of rope are fixed, so the fundamental frequency of acceleration transducer pickup equals the natural frequency of vibration of rope, just can go out Suo Li by inverse by the boundary condition of the natural frequency of vibration and rope.
This cable tension test method shortcoming is distinct:
1) clear boundary condition is needed: rope generally has two kinds of forms in actual applications: a kind of cable body two ends are fixing on a rigid structure, such as, rope in bowstring arch bridge, cable-stayed bridge, two ends are fixed on decking and steel arch circle or on decking and Sarasota, this cable body can use vibratory drilling method to test; Another kind of cable body two ends are fixing on a rigid structure, the space structure systems such as such as space net rack, rope net curtain wall, beam string, this structural system, and the boundary condition at cable body two ends is also uncertain, cannot calculate Suo Li by vibratory drilling method.
2) vibratory drilling method is owing to being calculate frequency by acceleration, then calculates Suo Li by frequency, and calculation procedure is complicated, and is easily subject to the interference of 3 subharmonic in the process calculating frequency at acceleration, and data processing exists certain difficulty.
Therefore traditional cable tension test method limitation of having it fatal.
Utility model content
The purpose of this utility model: the high precision cable tension test instrument providing a kind of magnetic conduction sex cords, can measure Suo Li absolute value in real time, can carry out Real-Time Monitoring, solve the significant technology issues in engineering monitoring to cable body.
To achieve these goals, the technical solution of the utility model is:
A high precision cable tension test instrument for magnetic conduction sex cords, comprises low noise power supply management devices, increasing apparatus, dropping equipment, linear voltage regulation device, magnetic flux transducer, metal-oxide-semiconductor, two differential operational amplifiers, two analog to digital converters, central processing unit, 485 buffer circuits, network interface card and SD card memorys; One end of described increasing apparatus is connected with one end of described dropping equipment, and the other end of described dropping equipment is connected with one end of described linear voltage regulation device; Described magnetic flux transducer structure ringwise, described magnetic flux transducer is nested with on tested cable body, the two ends, side of described magnetic flux transducer are connected with one end of the described other end of linear voltage regulation device, one end of metal-oxide-semiconductor and the differential operational amplifier described in one of them respectively, the other end ground connection of described metal-oxide-semiconductor, the opposite side two ends of described magnetic flux transducer are connected with one end of the differential operational amplifier described in another respectively; The other end of two described differential operational amplifiers is corresponding with one end of described two analog to digital converters respectively to be connected, the other end of two described analog to digital converters is corresponding with described central processing unit respectively to be connected, one end of 485 described buffer circuits, network interface card, SD card memory is connected with described central processing unit respectively, forms tester body; The output terminal of described low noise power supply management devices is connected with described tester body, the other end ground connection of described low noise power supply management devices.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords, wherein, described network interface card is 10/100Mb/s adaptive industrial level chip DP83848I_PT_48.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords, wherein, also comprise house dog, described house dog is connected with described central processing unit.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords, wherein, described increasing apparatus is LM2586 voltage stabilizer.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords; wherein; described dropping equipment is LM2596 switching mode integrated voltage-stabilized chip; the adjustable voltage of described dropping equipment is 33V, 25V, 15V and 9V, and described dropping equipment includes fixed oscillator, benchmark voltage stabilizer, protection circuit, current limit and Thermal shutdown circuit.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords, wherein, described linear voltage regulation device is TPS7A4701 voltage stabilizer.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords, wherein, described differential operational amplifier is AD8139 amplifier.
The high precision cable tension test instrument of above-mentioned magnetic conduction sex cords, wherein, described analog to digital converter is AD7641 chip.
In the utility model, tested cable body does not need clear and definite boundary condition, as long as almost magnetic conduction sex cords just can use, range of application is extensive especially; Each original paper excellent in durability, can use by long-term field; Adopt 18 precision high-speed AD, precision high measurement is accurate; Adopt technical grade magnetic coupling to isolate 485 special chips, isolation voltage, up to 5000V, can resist 15kV electrostatic interference; Adopt 10/100Mb/s adaptive industrial level network card chip, error-free transmission can reach 150 meters.
Accompanying drawing explanation
Fig. 1 is the connection block diagram of the high precision cable tension test instrument of a kind of magnetic conduction sex cords of the utility model.
Fig. 2 is the process flow diagram of the method for testing of the high precision cable tension test instrument of a kind of magnetic conduction sex cords of the utility model.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
Refer to shown in accompanying drawing 1, a high precision cable tension test instrument for magnetic conduction sex cords, comprises low noise power supply management devices 1, increasing apparatus 2, dropping equipment 3, linear voltage regulation device 4, magnetic flux transducer 5, metal-oxide-semiconductor 6, two differential operational amplifiers 7, two analog to digital converters 8, central processing unit 9,485 buffer circuit 10, network interface card 11 and SD card memory 12; One end of described increasing apparatus 2 is connected with one end of described dropping equipment 3, and the other end of described dropping equipment 3 is connected with one end of described linear voltage regulation device 4; Described magnetic flux transducer 5 structure ringwise, described magnetic flux transducer 5 is nested with on tested cable body, the two ends, side of described magnetic flux transducer 5 are connected with one end of the other end of described linear voltage regulation device 4, one end of metal-oxide-semiconductor 6 and the differential operational amplifier 7 described in one of them respectively, the other end ground connection of described metal-oxide-semiconductor 6, the opposite side two ends of described magnetic flux transducer 5 are connected with one end of the differential operational amplifier 7 described in another respectively; The other end of two described differential operational amplifiers 7 is corresponding with one end of described two analog to digital converters 8 respectively to be connected, the other end of two described analog to digital converters 8 is corresponding with described central processing unit 9 respectively to be connected, one end of 485 described buffer circuits 10, network interface card 11, SD card memory 12 is connected with described central processing unit 9 respectively, forms tester body; The output terminal of described low noise power supply management devices 1 is connected with described tester body, the other end ground connection of described low noise power supply management devices 1.
485 buffer circuits 10 and network interface card 11 can control various parameter of the present utility model, and can Real-time Obtaining data.Described network interface card 11 is 10/100Mb/s adaptive industrial level chip DP83848I_PT_48, and error-free transmission can reach 150 meters.
Also comprise house dog 13, described house dog 13 is connected with described central processing unit 9.Can block up at central processing unit 9 circuit buffer memory, seemingly-dead time automatically reset, ensure the utility model long time continuous working, and do not occur the machine of delaying.
Described increasing apparatus 2 is LM2586 voltage stabilizer, be aim at flyback, boosting and positive excitation converter application and design monolithic integrated optical circuit, optional 3.3v/5.0v/12v and voltage adjustable.
Described dropping equipment 3 is LM2596 switching mode integrated voltage-stabilized chip; the adjustable voltage of described dropping equipment 3 is 33V, 25V, 15V and 9V; described dropping equipment 3 includes fixed oscillator (150KHZ) and benchmark voltage stabilizer (1.23v), and has perfect protection circuit, current limit, Thermal shutdown circuit etc.
Described linear voltage regulation device 4 is TPS7A4701 voltage stabilizer, built-in positive voltage, and ultra-low noise RF low pressure drop (LDO) voltage stabilizer, this voltage stabilizer can provide the load supplying of 1A.
Described differential operational amplifier 7 is AD8139 amplifier, is a ultra-low noise, high-performance differential amplifier, provides rail-to-rail output.It has low noise, high SFDR and wide bandwidth characteristic, thus becomes the choosing of the ideal of the highest 18 bit resolution ADC of driving.
Described analog to digital converter 8 is AD7641 chip.This chip has 18 precision, 2 MSPS, Charge scaling SAR type, fully differential analog to digital converter (ADC), adopts 2.5V single power supply.This device built-in 18 high-speed sampling ADC, internal conversion clock, internal reference voltage source buffering, an error correction circuit, and serial and parallel system interface port.
Low noise power supply management devices 1 can provide 12.7 μ VRMS (20Hz to 20kHz)+5V, + 12V, + 24V low noise power supply, power supply input noise suppresses to reach 72dB (120Hz), >=52dB (10Hz to 400kHz), the system that can ensure has pure power supply environment.
Refer to shown in accompanying drawing 2, a kind of method of testing of high precision cable tension test instrument of magnetic conduction sex cords, the method at least comprises the steps:
Step 1: described low noise power supply management devices 1 inputs 24V3A power supply.
Step 2: described 24V3A power supply is elevated to 35V2A power supply by described increasing apparatus 2.
Step 3: described dropping equipment 3 described 35V2A power supply is dropped to 33V 25V 15V 9V adjustable voltage, and input described in linear voltage regulation device 4.
Step 4: the diameter, length, the material property that input tested cable body in described central processing unit 9, described central processing unit 9 calculates the driving voltage that use, and stores this configuration information.
Step 5: the driving voltage that described central processing unit 9 calculates is input to the drive coil of described magnetic flux transducer 5, produces exciting current.
Step 6: described exciting current, after differential operational amplifier 7 amplification filtering described in one of them, inputs the analog to digital converter 8 described in one of them.
Step 7: after simulating signal is changed into digital signal by the analog to digital converter 8 described in one of them, the central processing unit 9 described in input, precise monitoring exciting current.
Step 8: the drive coil of described magnetic flux transducer 5 produces magnetic field, and carries out excitation to tested cable body, meanwhile, the inductive coil of described magnetic flux transducer 5, produces induced voltage.
Step 9: described induced voltage is after flourishing device 7 amplification filtering of the calculus of differences described in another, input the analog to digital converter 8 described in another, after simulating signal is changed into digital signal by described analog to digital converter 8, the central processing unit 9 described in input, precise monitoring induced voltage.
Step 10: described central processing unit 9, by calculating the configuration information of exciting current and induced voltage and tested cable body, accurately calculates real-time Suo Li.
Step 11: described SD card memory 12 can store the rope force value calculated in real time in described central processing unit 9.
STM32F407 32 Cortex-M4 framework ARM cores selected by central processing unit 9, band FPU, and DSP instruction, can carry out hardware floating point calculating, and most high primary frequency reaches 168MHz.
In sum, in the utility model, tested cable body does not need clear and definite boundary condition, as long as almost magnetic conduction sex cords just can use, range of application is extensive especially; Each original paper excellent in durability, can use by long-term field; Adopt 18 precision high-speed AD, precision high measurement is accurate; Adopt technical grade magnetic coupling to isolate 485 special chips, isolation voltage, up to 5000V, can resist 15kV electrostatic interference; Adopt 10/100Mb/s adaptive industrial level network card chip, error-free transmission can reach 150 meters.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model description to do; or directly or indirectly use the technical field being attached to other Related products, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. a high precision cable tension test instrument for magnetic conduction sex cords, is characterized in that: comprise low noise power supply management devices, increasing apparatus, dropping equipment, linear voltage regulation device, magnetic flux transducer, metal-oxide-semiconductor, two differential operational amplifiers, two analog to digital converters, central processing unit, 485 buffer circuits, network interface card and SD card memorys; One end of described increasing apparatus is connected with one end of described dropping equipment, and the other end of described dropping equipment is connected with one end of described linear voltage regulation device; Described magnetic flux transducer structure ringwise, described magnetic flux transducer is nested with on tested cable body, the two ends, side of described magnetic flux transducer are connected with one end of the described other end of linear voltage regulation device, one end of metal-oxide-semiconductor and the differential operational amplifier described in one of them respectively, the other end ground connection of described metal-oxide-semiconductor, the opposite side two ends of described magnetic flux transducer are connected with one end of the differential operational amplifier described in another respectively; The other end of two described differential operational amplifiers is corresponding with one end of described two analog to digital converters respectively to be connected, the other end of two described analog to digital converters is corresponding with described central processing unit respectively to be connected, one end of 485 described buffer circuits, network interface card, SD card memory is connected with described central processing unit respectively, forms tester body; The output terminal of described low noise power supply management devices is connected with described tester body, the other end ground connection of described low noise power supply management devices.
2. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1, is characterized in that: described network interface card is 10/100Mb/s adaptive industrial level chip DP83848I_PT_48.
3. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1, it is characterized in that: also comprise house dog, described house dog is connected with described central processing unit.
4. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1, is characterized in that: described increasing apparatus is LM2586 voltage stabilizer.
5. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1; it is characterized in that: described dropping equipment is LM2596 switching mode integrated voltage-stabilized chip; the adjustable voltage of described dropping equipment is 33V, 25V, 15V and 9V, and described dropping equipment includes fixed oscillator, benchmark voltage stabilizer, protection circuit, current limit and Thermal shutdown circuit.
6. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1, is characterized in that: described linear voltage regulation device is TPS7A4701 voltage stabilizer.
7. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1, is characterized in that: described differential operational amplifier is AD8139 amplifier.
8. the high precision cable tension test instrument of magnetic conduction sex cords according to claim 1, is characterized in that: described analog to digital converter is AD7641 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520305876.7U CN204612849U (en) | 2015-05-13 | 2015-05-13 | A kind of high precision cable tension test instrument of magnetic conduction sex cords |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520305876.7U CN204612849U (en) | 2015-05-13 | 2015-05-13 | A kind of high precision cable tension test instrument of magnetic conduction sex cords |
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| CN204612849U true CN204612849U (en) | 2015-09-02 |
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| CN201520305876.7U Expired - Fee Related CN204612849U (en) | 2015-05-13 | 2015-05-13 | A kind of high precision cable tension test instrument of magnetic conduction sex cords |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807585A (en) * | 2015-05-13 | 2015-07-29 | 上海同磊土木工程技术有限公司 | High-precision cable force testing instrument of magnetic permeability cable and test method thereof |
-
2015
- 2015-05-13 CN CN201520305876.7U patent/CN204612849U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807585A (en) * | 2015-05-13 | 2015-07-29 | 上海同磊土木工程技术有限公司 | High-precision cable force testing instrument of magnetic permeability cable and test method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |