CN207798249U - A kind of resistance strain weighing transducer detection device - Google Patents
A kind of resistance strain weighing transducer detection device Download PDFInfo
- Publication number
- CN207798249U CN207798249U CN201820264323.5U CN201820264323U CN207798249U CN 207798249 U CN207798249 U CN 207798249U CN 201820264323 U CN201820264323 U CN 201820264323U CN 207798249 U CN207798249 U CN 207798249U
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- Prior art keywords
- module
- weighing
- weighing sensor
- resistance strain
- current source
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Abstract
The utility model discloses a kind of resistance strain weighing transducer detection devices, power module, clock module, current source DAC module, ADC module, memory module and the communication module being connect including control unit and respectively with described control unit, the input terminal of the current source DAC module output end and weighing sensor connects, and the output end of weighing sensor is connect with the ADC module.The utility model can locally realize detection and product control to weighing sensor, and testing cost is low, and detection cycle is short, and detection efficiency is high.
Description
Technical field
The utility model belongs to weight sensing technology field, and in particular to a kind of resistance strain weighing transducer detection
Device.
Background technology
At present weighing sensor by conversion method be divided into photo-electric, fluid pressure type, electromagnetic type, condenser type, magnetic pole deformation type,
8 classes such as oscillatory type, gyro ceremony, resistance-strain type are most wide with resistance-strain type use.But it weighs biography for resistance-strain type
The context of detection of sensor mainly entrusts third party to realize, of high cost, the period is long, formality although quality control can be realized
It is cumbersome.As user, there is an urgent need to a kind of at low cost, the mode of quality control can be locally realized.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides one kind and can locally realize to weighing and sensing
The detection of device, the resistance strain weighing transducer detection device that testing cost is low, detection cycle is short, detection efficiency is high.
A kind of resistance strain weighing transducer detection device, including control unit and respectively with described control unit connect
It is the power module that connects, clock module, the current source DAC module that constant current is provided for weighing sensor, weighing sensor is defeated
The mV signals gone out carry out the ADC module of analog-to-digital conversion, store the memory module and communication module of detection data, the current source
DAC module output end is connect with the input terminal of the weighing sensor, the output end of the weighing sensor and the ADC module
Connection.
Further, the current source DAC module output end is connect with the input terminal of multiple weighing sensors respectively, described
The output end of multiple weighing sensors is separately connected an ADC module；The quantity of the ADC module and weighing sensor
Quantity is equal and corresponds.
Further, further include industrial personal computer and the display device being connect with the industrial personal computer and press key input device, institute
Industrial personal computer is stated to connect with the communication module.
Further, further include USB module for reading and writing, the USB module for reading and writing is connect with the industrial personal computer.
Further, the current source DAC module uses AD5420 chips, the ADC module to use TM7711 chips.
Compared with the prior art, the utility model has the advantages that：
1, it is realized to electricity by the annular connection of control unit, current source DAC module, weighing sensor and ADC module
The local detection of strain gauge load cell is hindered, it is of low cost, it is easy to operate；
2, connection type in parallel again after connecting with ADC module by using multiple weighing sensors, can be simultaneously to more
A weighing sensor is detected, and solves the problems, such as that the detection cycle length of weighing sensor in the prior art, detection efficiency are bright
It is aobvious to improve.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Wherein, 1- control units, 2- power modules, 3- clock modules, 4- weighing sensors, 5- current source DAC modules, 6-
ADC module, 7- memory modules, 8- communication modules, 9- industrial personal computers, 10- display devices, 11- press key input devices, 12-USB read-writes
Module.
Specific implementation mode
In order to which the technical means, creative features, achievable purpose and effectiveness for making utility model realize are easy to understand, below
In conjunction with being specifically illustrating, the utility model is expanded on further.
A kind of resistance strain weighing transducer detection device, as shown in Figure 1, including control unit 1 and respectively with institute
State the power module 2, clock module 3, the current source DAC module that constant current is provided for weighing sensor 4 of the connection of control unit 1
5, the mV signals for exporting weighing sensor 4 carry out the ADC module 6 of analog-to-digital conversion, store the memory module 7 of detection data and lead to
Believe that module 8,5 output end of current source DAC module are connect with the input terminal of the weighing sensor 4, the weighing sensor 4
Output end connect with the ADC module 6.The power module 2 provides power supply for device, and the communication module 8 is used for and it
He communicates computer.Described weighing sensor refers both to resistance strain weighing transducer in the utility model.
Particularly, described control unit 1 is MCU, and STM32 chips may be used；DS1302 can be used in the clock module 3
Clock chip；AD5420 chips can be used in the current source DAC module 5；TM7711 chips can be used in the ADC module 6；It is described
Flash memory can be used in memory module 7, can be specifically SST25VF080B flash chips；The communication module 8 may be used
75LBC184 communication chips.
When this detection device when in use, first weighing sensor is connected between ADC module and current source DAC module.
Control unit sends out control signal to current source DAC module allows the current source DAC module to export a constant current, the title
A mV voltage signal, the mV voltages can be exported under the action of the electric current according to the sensory characteristic of its own by retransmitting sensor
Signal is converted into digital voltage signal by ADC module by analog signal, and described control unit reads the digital voltage signal,
And it is saved in memory module using the digital voltage signal as detection data.The resistance value of weighing sensor can pass through detection
The data such as the electric current that voltage signal and current source DAC module provide are calculated.By giving weighing and sensing during the test
Device is with different electric current inputs or different load, moreover it is possible to detect the number such as sensitivity and offset output value of weighing sensor
According to.
So, the ring that this detection device passes through control unit, current source DAC module, weighing sensor and ADC module
Shape connection realizes the local detection to resistance strain weighing transducer, of low cost, easy to operate.
As a further optimization of the scheme , 5 output end of current source DAC module respectively with multiple weighing sensors 4
Input terminal connects, and the output end of the multiple weighing sensor 4 is separately connected an ADC module 6.The ADC module 6
Quantity is equal with the quantity of weighing sensor 4 and corresponds.
So, connection type in parallel again after the present apparatus is connected by using multiple weighing sensors with ADC module,
Multiple weighing sensors can be detected simultaneously, solve asking for the detection cycle length of weighing sensor in the prior art
Topic, detection efficiency significantly improve.
As a further optimization of the scheme , further include industrial personal computer 9 and the display device being connect with the industrial personal computer 9 10 and
Press key input device 11, the industrial personal computer 9 are connect with the communication module 8.The industrial personal computer 9 can by RS485 interfaces with
The communication module 8 connects, and 75LBC184 chips can be used in the communication module 8.
So by press key input device and display device human-computer interaction can be realized for the detection of weighing sensor
Function, the convenient inquiry for detection data can also control detection operating process by industrial personal computer.
As a further optimization of the scheme , further include USB module for reading and writing 12, the USB module for reading and writing 12 and the industry control
Machine 9 connects.CH376 chips may be used in the USB module for reading and writing 12.
So the detection data preserved in the memory module can be copied to mobile storage by industrial personal computer to set
It is standby, staff can be allowed to export detection data by movable storage device, convenient for being further processed and analyzing to data.
Above description is merely a prefered embodiment of the utility model, on the scope of protection of the utility model is not limited in
Embodiment is stated, every technical solution for belonging to the utility model principle belongs to the scope of protection of the utility model.For this
For the technical staff in field, several improvement carried out under the premise of not departing from the principles of the present invention, these improvement
It should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of resistance strain weighing transducer detection device, it is characterised in that：Including control unit and respectively with it is described
The power module of control unit connection, the current source DAC module for providing for weighing sensor constant current, will claim clock module
Retransmit memory module and communication module that the mV signals of sensor output carry out the ADC module of analog-to-digital conversion, store detection data, institute
It states current source DAC module output end to connect with the input terminal of the weighing sensor, the output end of the weighing sensor and institute
State ADC module connection.
2. a kind of resistance strain weighing transducer detection device according to claim 1, it is characterised in that：The electric current
Source DAC module output end is connect with the input terminal of multiple weighing sensors respectively, the output end point of the multiple weighing sensor
It Lian Jie not an ADC module；The quantity of the ADC module is equal with the quantity of weighing sensor and corresponds.
3. a kind of resistance strain weighing transducer detection device according to any one of claim 1-2, feature exist
In：Further include industrial personal computer and the display device being connect with the industrial personal computer and press key input device, the industrial personal computer with it is described
Communication module connects.
4. a kind of resistance strain weighing transducer detection device according to claim 3, it is characterised in that：Further include
USB module for reading and writing, the USB module for reading and writing are connect with the industrial personal computer.
5. a kind of resistance strain weighing transducer detection device according to claim 1, it is characterised in that：The electric current
Source DAC module uses AD5420 chips, the ADC module to use TM7711 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820264323.5U CN207798249U (en) | 2018-02-23 | 2018-02-23 | A kind of resistance strain weighing transducer detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820264323.5U CN207798249U (en) | 2018-02-23 | 2018-02-23 | A kind of resistance strain weighing transducer detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798249U true CN207798249U (en) | 2018-08-31 |
Family
ID=63276532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820264323.5U Expired - Fee Related CN207798249U (en) | 2018-02-23 | 2018-02-23 | A kind of resistance strain weighing transducer detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351559A (en) * | 2018-12-20 | 2020-06-30 | 梅特勒-托利多(常州)测量技术有限公司 | Weighing system |
-
2018
- 2018-02-23 CN CN201820264323.5U patent/CN207798249U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351559A (en) * | 2018-12-20 | 2020-06-30 | 梅特勒-托利多(常州)测量技术有限公司 | Weighing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20200223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |