CN210380935U - Communication address self-setting system of digital weighing sensor - Google Patents
Communication address self-setting system of digital weighing sensor Download PDFInfo
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- CN210380935U CN210380935U CN201921446305.XU CN201921446305U CN210380935U CN 210380935 U CN210380935 U CN 210380935U CN 201921446305 U CN201921446305 U CN 201921446305U CN 210380935 U CN210380935 U CN 210380935U
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Abstract
The utility model relates to a digital weighing sensor communication address self-setting system, belonging to the technical field of digital weighing sensor communication address setting; the technical problem to be solved is as follows: the improvement of the hardware of the digital weighing sensor communication address self-setting system is provided; the technical scheme for solving the technical problem is as follows: the weighing system comprises a plurality of weighing modules, a plurality of signal junction boxes and a weighing instrument, wherein the weighing modules are connected with the signal junction boxes through communication address signal lines and an RS485 bus, and the signal input end of the weighing instrument is connected with the signal junction boxes through the RS485 bus; a weighing sensor and a microcontroller are arranged in the weighing module, the signal output end of the weighing sensor is connected with the microcontroller, and the signal output end of the microcontroller is also provided with an address signal input port and an RS485 communication module; the utility model discloses be applied to digital weighing sensor.
Description
Technical Field
The utility model relates to a digital weighing sensor communication address sets up system by oneself belongs to digital weighing sensor communication address and sets up technical field.
Background
The junction box is a middle part of the weighing apparatus device for connecting the weighing sensor and the weighing instrument, has the functions of connecting the weighing instrument and transmitting weighing acquisition data, and is divided into an analog junction box and a digital junction box according to different principles and structures of the weighing sensor and the weighing instrument; based on the consideration of factors such as measurement accuracy, control efficiency, manufacturing cost and the like, the analog junction box is gradually replaced by the digital junction box, the digital junction box can realize independent power supply and independent filtering of each sensor by the existing numerical control technology, signal amplification and A/D conversion are carried out through a multi-path analog switch, data analysis and processing are finally carried out through a single chip microcomputer, and an RS485 communication interface is used for transmitting the processed data to a display instrument or an electronic computer.
At present, the number of digital weighing sensors connected by using a weighing apparatus instrument is more and more, particularly, a weighing apparatus of a large vehicle is provided with a large number of weighing sensors, if all the sensors are wired by using the existing junction box, after wiring, working parameters and network addresses of each connected weighing sensor need to be set by software, so that the installation and debugging are inconvenient, and the use efficiency of the weighing apparatus is low; in addition, after the communication addresses of all weighing sensors are manually set, when power failure or sensor failure occurs, all the communication addresses of all the sensors are in error and need to be reset, so that the workload is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the hardware of the digital weighing sensor communication address self-setting system is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a communication address self-setting system of a digital weighing sensor comprises a plurality of weighing modules, a plurality of signal junction boxes and a weighing instrument, wherein the weighing modules are connected with the signal junction boxes through communication address signal lines and an RS485 bus, and the signal input end of the weighing instrument is connected with the signal junction boxes through the RS485 bus;
a weighing sensor and a microcontroller are arranged in the weighing module, the signal output end of the weighing sensor is connected with the microcontroller, and the signal output end of the microcontroller is also provided with an address signal input port and an RS485 communication module;
an address distribution control chip U1-U4 is arranged inside the signal junction box, 4 pins of the address distribution control chip U1-U4 are connected with an address signal input port through wiring terminals J2-J5 respectively, a signal output end of the address distribution control chip U1-U4 is connected with a DC-DC module in series and then is connected with a wiring terminal J1, and a wiring terminal J1 is connected with a weighing instrument through an RS485 bus; the signal junction boxes are connected in parallel through a junction terminal J1;
the signal junction box is characterized in that a power supply module is further arranged inside the signal junction box, a control chip of the power supply module is a protection chip U5, and the output end of the protection chip U5 is connected with the weighing module through a wiring terminal J2-J5.
The model number of the address allocation control chip U1-U4 is HS 1527;
the model of the protection chip U5 is PSM 712;
the chip model used in the microcontroller is STM8S103F 3P.
The chip used by the DC-DC module is a power chip U6, and the model of the power chip U6 is CFD5-24S 06W.
The utility model discloses beneficial effect for prior art possesses does: the utility model provides a weighing sensor communication address sets up system by oneself has improved the inner structure of signal terminal box, can carry out automatic settlement to the digital weighing sensor network address of being connected rather than, realizes digital weighing sensor's plug-and-play function, has overcome traditional digital terminal box and has connected weighing sensor and frequently set up the problem of communication address, has reduced the work load of artifical setting, has improved the installation availability factor that the weighing apparatus was weighed.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic diagram of the circuit structure of the present invention;
fig. 2 is a schematic diagram of a circuit structure of the weighing module of the present invention;
FIG. 3 is a schematic circuit diagram of the signal junction box of the present invention;
in the figure: the weighing system comprises a weighing module 1, a signal junction box 2, a weighing instrument 3, a weighing sensor 4, a microcontroller 5, an address signal input port 6 and an RS485 communication module 7.
Detailed Description
As shown in fig. 1 to 3, the utility model relates to a digital weighing sensor communication address self-setting system, including a plurality of weighing modules (1), a plurality of signal terminal boxes (2) and weighing instrument (3), weighing module (1) is connected with signal terminal box (2) through communication address signal line and RS485 bus, the signal input part of weighing instrument (3) is connected with signal terminal box (2) through RS485 bus;
a weighing sensor (4) and a microcontroller (5) are arranged inside the weighing module (1), a signal output end of the weighing sensor (4) is connected with the microcontroller (5), and an address signal input port (6) and an RS485 communication module (7) are further arranged at a signal output end of the microcontroller (5);
an address distribution control chip U1-U4 is arranged inside the signal junction box (2), 4 pins of the address distribution control chip U1-U4 are connected with an address signal input port (6) through wiring terminals J2-J5 respectively, signal output ends of the address distribution control chip U1-U4 are connected with a DC-DC module in series and then connected with a wiring terminal J1, and a wiring terminal J1 is connected with the weighing instrument (3) through an RS485 bus; the signal junction boxes (2) are connected in parallel through a junction terminal J1;
the signal junction box (2) is characterized in that a power supply module is further arranged inside the signal junction box (2), a control chip of the power supply module is a protection chip U5, and the output end of the protection chip U5 is connected with the weighing module (1) through a wiring terminal J2-J5.
The model number of the address allocation control chip U1-U4 is HS 1527;
the model of the protection chip U5 is PSM 712;
the type of a chip used in the microcontroller (5) is STM8S103F 3P.
The chip used by the DC-DC module is a power chip U6, and the model of the power chip U6 is CFD5-24S 06W.
The utility model discloses the technical scheme's that the device adopted realization principle as follows: one part of the power supply module provides required voltage for the weighing sensor, and the other part of the power supply module provides voltage for the HS1527 chip in the signal junction box through diode voltage reduction.
The utility model discloses an address coding processing step as follows:
the HS1527 chip arranged in the signal junction box is a learning code coding IC which is designed and manufactured by CMOS and can burn in internal codes, is decoded by software, supplies power for 2v-10v by wide voltage, is provided with four key inputs and internally comprises an oscillation circuit, and can change the oscillation frequency by only externally connecting a resistor.
The encoding format of the output address of the HS1527 chip is as follows: the synchronization code is a code with a duty cycle of 1: 32 square wave signals, wherein C0-C19 are 20-bit internal codes, and the internal codes are pre-burnt when leaving a factory; d1, D2, D3 and D4 led out from 4 pins of the chip U1-U4 are key codes input by external keys; in use, the key address uniquely identifies the address of the HS1527 chip by the high and low level of the external key, for example, when the external key is connected to K0=0, K1=0, K2=0, and K3=1, ("0" is low, "1" is high), the data corresponding to D0, D1, D2, and D3 is 0001.
Under the condition of a certain voltage, the expansion address can change the oscillation frequency of the HS1527 chip by changing the resistance on the oscillation line, and the square wave periods corresponding to different oscillation frequencies are different; in the device of the present invention (under the condition of 5V voltage), 3 different resistors 47K, 100K and 150K are externally connected to each address allocation control chip U1-U4, so that the periods of the output square wave signals are respectively 200us, 400us and 588 us.
When the oscillation circuit of the address allocation control chip is connected with a 47K resistor, the corresponding square wave period is 200us, and when the external key is 0001, the corresponding data D is 0001; when the signal junction box is powered on, the HS1527 chip serially outputs a series of square wave signals through the TXD pin, and the square wave signals comprise synchronous codes, internal codes C0-C19 (each chip corresponds to one group of internal codes) and key codes 0001.
After the weighing sensor receives a square wave signal sent by the HS1527 chip, the microcontroller firstly measures a square wave period and determines a jumper wire of a corresponding resistor according to the square wave period, and the address can be used as a basis for an external weighing sensor communication address.
Because the internal code is unique and unknown and cannot be used as the basis for judging the address, the microcontroller reads the last four-bit data 0001 of the square wave signal, and because the external key of each HS1527 chip is unique, the last four-bit data can also be used as the basis for the communication address of the external digital weighing sensor.
In summary, the external weighing sensor can determine the communication address of each weighing sensor through the uniqueness of the square wave period and the uniqueness of the external key.
As shown in fig. 1, 4 external keys of the HS1527 chip are arranged in each signal junction box, namely 0001, 0010, 0100 and 1000, respectively, and when each junction box is cascaded, an address needs to be determined through external resistors 47K, 100K and 150K on an oscillation circuit of the HS1527 chip; the digital sensor connected to each signal junction box can be replaced at will, plug and play is realized, and additional manual address setting is not needed.
The utility model provides a signal terminal box is as the connection module in the weighing apparatus system, not only can carry out the address setting by the weighing sensor, can also cascade with other terminal boxes through the RS485 bus, and the weighing sensor carries out the function extension, makes it be applicable to large-scale weighing apparatus operation of weighing.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a digital weighing sensor communication address is system of setting up by oneself which characterized in that: the weighing system comprises a plurality of weighing modules (1), a plurality of signal junction boxes (2) and a weighing instrument (3), wherein the weighing modules (1) are connected with the signal junction boxes (2) through communication address signal lines and RS485 buses, and the signal input end of the weighing instrument (3) is connected with the signal junction boxes (2) through the RS485 buses;
a weighing sensor (4) and a microcontroller (5) are arranged inside the weighing module (1), a signal output end of the weighing sensor (4) is connected with the microcontroller (5), and an address signal input port (6) and an RS485 communication module (7) are further arranged at a signal output end of the microcontroller (5);
an address distribution control chip U1-U4 is arranged inside the signal junction box (2), 4 pins of the address distribution control chip U1-U4 are connected with an address signal input port (6) through wiring terminals J2-J5 respectively, signal output ends of the address distribution control chip U1-U4 are connected with a DC-DC module in series and then connected with a wiring terminal J1, and a wiring terminal J1 is connected with the weighing instrument (3) through an RS485 bus; the signal junction boxes (2) are connected in parallel through a junction terminal J1;
the signal junction box (2) is characterized in that a power supply module is further arranged inside the signal junction box (2), a control chip of the power supply module is a protection chip U5, and the output end of the protection chip U5 is connected with the weighing module (1) through a wiring terminal J2-J5.
2. The digital weighing sensor communication address self-setting system according to claim 1, wherein: the model number of the address allocation control chip U1-U4 is HS 1527;
the model of the protection chip U5 is PSM 712;
the type of a chip used in the microcontroller (5) is STM8S103F 3P.
3. The digital weighing sensor communication address self-setting system according to claim 2, wherein: the chip used by the DC-DC module is a power chip U6, and the model of the power chip U6 is CFD5-24S 06W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921446305.XU CN210380935U (en) | 2019-09-02 | 2019-09-02 | Communication address self-setting system of digital weighing sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921446305.XU CN210380935U (en) | 2019-09-02 | 2019-09-02 | Communication address self-setting system of digital weighing sensor |
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| CN210380935U true CN210380935U (en) | 2020-04-21 |
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| CN201921446305.XU Active CN210380935U (en) | 2019-09-02 | 2019-09-02 | Communication address self-setting system of digital weighing sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445888A (en) * | 2019-09-02 | 2019-11-12 | 山西力创自动化技术有限公司 | A kind of digital weighing sensor address self-setting system and its setting method |
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2019
- 2019-09-02 CN CN201921446305.XU patent/CN210380935U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445888A (en) * | 2019-09-02 | 2019-11-12 | 山西力创自动化技术有限公司 | A kind of digital weighing sensor address self-setting system and its setting method |
| CN110445888B (en) * | 2019-09-02 | 2024-02-20 | 山西力创自动化技术有限公司 | Communication address self-setting system and method for digital weighing sensor |
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