CN209214748U - A kind of Five-channel digital weighing transmitter - Google Patents
A kind of Five-channel digital weighing transmitter Download PDFInfo
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- CN209214748U CN209214748U CN201822173859.9U CN201822173859U CN209214748U CN 209214748 U CN209214748 U CN 209214748U CN 201822173859 U CN201822173859 U CN 201822173859U CN 209214748 U CN209214748 U CN 209214748U
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Abstract
The utility model discloses a kind of Five-channel digital weighing transmitters, belong to weight transmitter field, including shell, are equipped with cavity in shell；It further include power module, communication module, message processing module, control signal output module and five signal sampling channels, signal sampling channel includes the signal input interface and analog-to-digital conversion module being connected, and power module, analog-to-digital conversion module, communication module, control signal output module are electrically connected with message processing module；Signal input interface is mounted on the surface of shell, and the surface of shell is also equipped with power interface and signal output interface, and signal output interface is electrically connected with control signal output module, communication module, and power interface is electrically connected with power module.The usage quantity of weight transmitter when the utility model is not only able to reduce multiple spot weighing, the data that can read multiple spot weighing simultaneously also have the function of controlling signal output, improve the response speed of control output.
Description
Technical field
The utility model relates to weight transmitter field, in particular to a kind of Five-channel digital weighing transmitter.
Background technique
Digital weighing transmitter, effect be transmitted to after the millivolt signal of weighing sensor to be converted to digital signal it is subsequent
Equipment.Currently, a digital weighing transmitter generally connects a sensor, sensor is used to convert the weight information of object
For millivolt signal, then millivolt signal is converted into digital signal by digital weighing transmitter, and sensor is with digital weighing transmitter
One-to-one relationship.
When an object needs multiple spot to weigh, multipair sensor and digital weighing transmitter are needed.Each sensor pair
Each point carries out gravity measurement, and each digital weighing transmitter again respectively exports digital signal.Therefore, it is necessary to digital weighing
The quantity of transmitter is more, and use cost is high.
Since existing digital weighing transmitter does not have the ability of control signal output, external PLC is needed.When
When external PLC needs to obtain the numerical value of each digital weighing transmitter, need the multiple digital weighing transmitters of poll, then into
The upper judgement of row application (high low value judgement etc.), then control signal is provided, carry out switch motion；This process is then needed by number
After weighing converter has first handled numerical value, then processing result is transferred to PLC, judged accordingly by PLC, therefore real-time
Not enough.
Utility model content
It can only correspond and use with sensor for digital weighing transmitter of the existing technology, and not have control
The problem of signal fan-out capability processed, the purpose of this utility model is to provide a kind of Five-channel digital weighing transmitters.
To achieve the above object, the technical solution of the utility model are as follows:
A kind of Five-channel digital weighing transmitter, including shell, the shell is interior to be equipped with cavity；Further include power module,
Communication module, message processing module, control signal output module and five signal sampling channels, the signal sampling channel include
The signal input interface and analog-to-digital conversion module being connected, the power module, the analog-to-digital conversion module, the communication mould
Block, the control signal output module are electrically connected with the message processing module；The signal input interface is mounted on described
The surface of shell, the surface of the shell are also equipped with power interface and signal output interface, the signal output interface and institute
Control signal output module, communication module electrical connection are stated, the power interface is electrically connected with the power module；The electricity
Source module, the communication module, the analog-to-digital conversion module, the control signal output module, the message processing module are equal
In the cavity, wiring board, the power module, the communication module, the analog-to-digital conversion are additionally provided in the cavity
Module, the control signal output module, the message processing module are installed on the wiring board, and the signal input connects
Mouth, the signal output interface, the power interface with the circuit board electrical connection.
Preferably, the material of the shell is aluminium alloy, and the shell includes upper cover, lower cover, left plate and right side plate；Institute
State the left and right both ends of upper cover and the left and right open at both ends of the lower cover, left and right both ends of the surface of the upper cover and described
The left and right both ends of the surface of lower cover are equipped with threaded hole, are equipped on the left plate, the right side plate and are adapted with the threaded hole
Screw hole, the shell passes through screw closure；The cavity is the upper cover, the lower cover, the left plate, the right side
The enclosure space that plate surrounds.
Further, the front and rear ends of the upper cover and the front and rear ends of the lower cover are equipped with coaming plate, it is described on
The coaming plate of lid and the coaming plate of the lower cover snap connection.
Preferably, the signal input interface, the signal output interface, the power interface are installed in the upper cover
Surface.
Further, the surface of the upper cover is equipped with power supply and communication indicator light and control point output indicator, the electricity
Source is electrically connected with communication indicator light with the power module, the communication module, the control point output indicator and the control
Signal output module electrical connection processed.
It further, further include SD card interface, the SD card interface is electrically connected with the message processing module, the right side
Plate is equipped with SD card card slot compatible with the SD card interface.
Further, the left plate, the right side plate are equipped with lifting ear.
Preferably, the analog-to-digital conversion module is 24 high-precision adc chips.
Preferably, the communication module is the RS485 bus using Modbus-RTU agreement.
Further, the communication module includes read-write register, and the read-write register includes read coil and writes coil.
By adopting the above technical scheme, due to the setting of five acquisition channels, so that the digital weighing pick-up of the utility model
Device can connect five sensors simultaneously, therefore be able to omit the use of four digital weighing transmitters, effectively reduce multiple spot
Use cost when weighing；Again due to the presence of message processing module, so that the digital weighing transmitter of the utility model has
Analyzed millivolt signal, handled and then provided the ability of control signal output.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlargement diagram in Fig. 1 at A.
In figure: 1- shell, 11- upper cover, 12- lower cover, 13- left plate, 14- right side plate, 15- coaming plate, 16- lifting ear, 2- letter
Number input interface, 3- signal output interface, 4- power interface, 5- wiring board, 6-SD card card slot, 7- power supply and communication indicator light,
The control point 8- output indicator, 9- screw, 10- threaded hole.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
As shown in Figure 1, a kind of Five-channel digital weighing transmitter, including shell 1, the material of shell 1 are aluminium alloy, this reality
It applies in example, it is in hexahedron shape that shell 1 is whole, and shell 1 includes upper cover 11, lower cover 12, left plate 13, right side plate 14 and by upper cover
11, the cavity that lower cover 12, left plate 13, right side plate 14 surround.
The front and rear ends of upper cover 11 and the front and rear ends of lower cover 12 are equipped with coaming plate 15, and coaming plate 15 makes upper cover vertically
11 with the whole U-shaped or N-shaped of lower cover 12；Meanwhile the coaming plate 15 of the coaming plate 15 of upper cover 11 and lower cover 12 is clamped by buckle,
The left and right both ends of upper cover 11 and the left and right open at both ends of lower cover 12, the left and right both ends of the surface of upper cover 11 and lower cover 12
Left and right both ends of the surface are all provided with there are two threaded hole 10, and two threaded holes 10 are symmetricly set on coaming plate 15, as shown in Figure 2.Left plate
13, screw hole (not shown) compatible with threaded hole 10 is equipped on right side plate 14, shell 1 is closed by screw 9.
The utility model further includes power module, communication module, message processing module, controls signal output module and five
Signal sampling channel, signal sampling channel include the signal input interface 2 and analog-to-digital conversion module being connected；Wherein, signal is defeated
Incoming interface 2 is used for the millivolt signal of receiving sensor output, and analog-to-digital conversion module is used to convert digital letter for the millivolt signal
Number；Power module is used to be each electricity consumption module for power supply.
Power module, analog-to-digital conversion module, communication module, control signal output module are electrically connected with message processing module
It connects.Wherein, message processing module is for being analyzed millivolt signal, being handled and being provided corresponding control signal, and communicates mould
The digital signal that block is then used to be converted to exports outward.
Signal input interface 2 is mounted on the surface of upper cover 11, while the surface of upper cover 11 is also equipped with power interface 4 and letter
Number output interface 3, signal output interface 3 are electrically connected with control signal output module, communication module, and signal output interface 3 is used for
By analog-to-digital conversion module conversion come digital signal and control signal output module generate control point on-off model into
Row output, power interface 4 are electrically connected with power module.
In the present embodiment, wiring board 5, power module, analog-to-digital conversion module, message processing module, communication are equipped in cavity
Module, control signal output module are installed on wiring board 5, and signal input interface 2, signal output interface 3, power interface
4 are electrically connected with wiring board 5.
In the present embodiment, the surface of upper cover 11 is equipped with power supply and communication indicator light 7 and control point output indicator 8；Work as electricity
It when source and communication indicator light 7 are always on, represent Five-channel digital weighing transmitter and normally powers on, when power supply and communication indicator light 7 dodge
When bright, it is normal with peripheral device communication to represent Five-channel digital weighing transmitter；Control point output indicator 8 and control signal are defeated
Module is electrically connected out, and there are two control point output indicators 8, and when exporting different control signals, corresponding control point output refers to
Show that lamp 8 is always on.
In the present embodiment, wiring board 5 is equipped with the SD card interface for socket joint SD card, SD card interface and message processing module
Electrical connection, correspondingly, right side plate 14 is equipped with SD card card slot 6.
In the present embodiment, analog-to-digital conversion module is 24 high-precision adc chips, passes through multistage calibration and built-in filtering
The digital signal reconvert that algorithm gets conversion is at weight value stable and with practical significance.
In the present embodiment, communication module is RS485 bus, and simultaneous communications module includes read-write register, read-write register
Including read coil and write coil.Communication module uses standard Modbus rtu protocol, can be deposited by read-write coil and read-write
Device such as is calibrated to Five-channel digital weighing transmitter, is removed the peel at the setting.
For convenience of fixing and installing, in the present embodiment, lifting ear 16 is equipped on left plate 13 and right side plate 14.
In use, step 1, be first powered on booting after, message processing module has detected whether SD card insertion, then detects SD
Card in whether the encryption software upgrade package containing different editions number.If so, then start to carry out software upgrading, it will be soft in SD card
It is written in the Flash of message processing module after the decryption of part upgrade package.At this point, power supply can be flashed with communication indicator light 7, it is to be upgraded complete
Cheng Hou, the Five-channel digital weighing transmitter of the utility model is automatically into normal procedure, and power supply and communication indicate at this time
Lamp 7 is always on.If not detecting SD card insertion or not detecting the software upgrade package of different editions number, this is practical new
The Five-channel digital weighing transmitter of type can be automatically into normal procedure, and power supply is always on communication indicator light 7 at this time.
Step 2 according to set 24 is high-precision adc chip sample rate, respectively to five signal sampling channels
Millivolt signal is acquired, and then reconvert carries out software filtering processing at digital signal, then according to the school calibrated in advance
Quasi- parameter, converts digital signal, converts digital signals into the weight value being of practical significance.
Step 3, when the front and back byte that serial ports receives time interval differ 3.5 byte transmission time spans when, just
It may determine that the byte is the last byte for the frame data that serial ports is received.Wherein: 3.5 byte transmission time
Judgement is to trigger timer when receiving first character section using timer, and timing is reset when receiving second byte
Device.If timer time is more than the time span of 3.5 bytes, then it is assumed that a frame data terminate.It will do it judgement string at this time
Whether the frame length of this frame data of mouth meets Modbus rtu protocol, then judges that the address of the data frame is practical new with this
Whether the address of the Five-channel digital weighing transmitter of type is consistent, finally judges whether the cyclic redundancy check of the data frame is correct, such as
Fruit is correct, then parses the data frame.Read-write register is contained in Modbus rtu protocol, is mainly used for reading and setting this reality
With all operating parameters of novel Five-channel digital weighing transmitter, read-write register contains read coil and writes coil,
Middle read coil be mainly used for read the utility model Five-channel digital weighing transmitter cleared condition, stable reading state,
Coil therein of writing is mainly used for clearing and the Five-channel digital weighing transmitter factory reset to the utility model.When
The Five-channel digital weighing transmitter of the utility model has successfully carried out an effective communication, power supply and communication 7 meeting of indicator light
It flashes.
Step 4, its connect step 2, after digital signal is converted into the weight value of practical significance, message processing module is calculated
The tracking numerical value for exporting control point, is judged according to the mode at the output control point of setting, then carries out switching value (control letter
Number) output.The mode at output control point has high alarm, low alarm, alarm in section respectively, alarms outside section, alarm free；It is defeated
The output state at control point is indicated by two control point output indicators 8 out.
Output control point tracking numerical value can be divided into: channel 1, channel 2, channel 3, channel 4, channel 5, SUM, Any2, Any3,
Any4,Any5,All2,All3,All4,All5.Such as: selection output control point tracks numerical value are as follows: Any2 exports control point
Mode is high alarm, selects control point 1, then when channel 1, channel 2 weight value in have an alarming value for being higher than setting when, open
Pass amount output, SP1 (a control point output indicator 8) red light is bright at this time；Again for example: selection output control point tracks numerical value
Are as follows: All2 exports the mode at control point as high alarm, selects control point 2, then set when the weight value in channel 1, channel 2 is all higher than
When fixed alarming value, output switch parameter, SP2 (another control point output indicator 8) red light is bright at this time.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (10)
1. a kind of Five-channel digital weighing transmitter, it is characterised in that: including shell, cavity is equipped in the shell；Further include
Power module, communication module, message processing module, control signal output module and five signal sampling channels, the signal are adopted
Collecting channel includes the signal input interface and analog-to-digital conversion module being connected, the power module, the analog-to-digital conversion module, institute
State communication module, the control signal output module is electrically connected with the message processing module；The signal input interface peace
Mounted in the surface of the shell, the surface of the shell is also equipped with power interface and signal output interface, the signal output
Interface is electrically connected with the control signal output module, the communication module, and the power interface is electrically connected with the power module
It connects；The power module, the communication module, the analog-to-digital conversion module, the control signal output module, at the information
Reason module is respectively positioned in the cavity, is additionally provided with wiring board in the cavity, the power module, the communication module, described
Analog-to-digital conversion module, the control signal output module, the message processing module are installed on the wiring board, the letter
Number input interface, the signal output interface, the power interface with the circuit board electrical connection.
2. Five-channel digital weighing transmitter according to claim 1, it is characterised in that: the material of the shell is aluminium conjunction
Gold, the shell include upper cover, lower cover, left plate and right side plate；The left and right both ends of the upper cover and a left side for the lower cover,
Right open at both ends, the left and right both ends of the surface of the upper cover and the left and right both ends of the surface of the lower cover are equipped with threaded hole, described
Screw hole compatible with the threaded hole is equipped on left plate, the right side plate, the shell passes through screw closure；It is described
The enclosure space that cavity is the upper cover, the lower cover, the left plate, the right side plate surround.
3. Five-channel digital weighing transmitter according to claim 2, it is characterised in that: the front and rear ends of the upper cover
And the front and rear ends of the lower cover are equipped with coaming plate, the coaming plate of the upper cover and the coaming plate of the lower cover snap connection.
4. Five-channel digital weighing transmitter according to claim 2, it is characterised in that: the signal input interface, institute
State signal output interface, the power interface is installed in the surface of the upper cover.
5. Five-channel digital weighing transmitter according to claim 2, it is characterised in that: the surface of the upper cover is equipped with electricity
Source and communication indicator light and control point output indicator, the power supply and communication indicator light and the power module, the communication
Module electrical connection, the control point output indicator are electrically connected with the control signal output module.
6. Five-channel digital weighing transmitter according to claim 2, it is characterised in that: it further include SD card interface, it is described
SD card interface is electrically connected with the message processing module, and the right side plate is equipped with SD card card compatible with the SD card interface
Slot.
7. Five-channel digital weighing transmitter according to claim 2, it is characterised in that: the left plate, the right side
Plate is equipped with lifting ear.
8. Five-channel digital weighing transmitter according to claim 1, it is characterised in that: the analog-to-digital conversion module is 24
Position high-precision adc chip.
9. Five-channel digital weighing transmitter according to claim 1, it is characterised in that: the communication module is to use
The RS485 bus of Modbus-RTU agreement.
10. Five-channel digital weighing transmitter according to claim 9, it is characterised in that: the communication module includes reading
Register is write, the read-write register includes read coil and writes coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822173859.9U CN209214748U (en) | 2018-12-24 | 2018-12-24 | A kind of Five-channel digital weighing transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822173859.9U CN209214748U (en) | 2018-12-24 | 2018-12-24 | A kind of Five-channel digital weighing transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN209214748U true CN209214748U (en) | 2019-08-06 |
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| CN201822173859.9U Active CN209214748U (en) | 2018-12-24 | 2018-12-24 | A kind of Five-channel digital weighing transmitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715716A (en) * | 2019-10-08 | 2020-01-21 | 广东海川智能机器股份有限公司 | System, method and device for controlling multiple weightless scales and storage medium |
| CN111427397A (en) * | 2020-04-21 | 2020-07-17 | 西安和其光电科技股份有限公司 | Temperature control system and temperature control method based on ARM |
-
2018
- 2018-12-24 CN CN201822173859.9U patent/CN209214748U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715716A (en) * | 2019-10-08 | 2020-01-21 | 广东海川智能机器股份有限公司 | System, method and device for controlling multiple weightless scales and storage medium |
| CN111427397A (en) * | 2020-04-21 | 2020-07-17 | 西安和其光电科技股份有限公司 | Temperature control system and temperature control method based on ARM |
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