CN211651794U - Rail weighbridge digital weighing system based on Internet of things - Google Patents
Rail weighbridge digital weighing system based on Internet of things Download PDFInfo
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- CN211651794U CN211651794U CN201922280111.3U CN201922280111U CN211651794U CN 211651794 U CN211651794 U CN 211651794U CN 201922280111 U CN201922280111 U CN 201922280111U CN 211651794 U CN211651794 U CN 211651794U
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Abstract
The utility model discloses a digital weighing system of a rail weighbridge based on the Internet of things, which comprises a remote monitoring terminal and a plurality of weighing mechanisms; the weighing machine comprises a weighing instrument, a signal acquisition module, a state acquisition module, a controller and a wireless communication module, wherein the weighing instrument comprises a weighing plate and a weighing module, the weighing module comprises a weighing circuit, the weighing circuit comprises a ceramic piezoresistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an adjustable resistor, a capacitor and an operational amplifier, in the digital weighing system based on the Internet of things, a remote monitoring terminal can remotely monitor the weighing weight of the weighing instrument in each weighing machine and the state of the weighing instrument, and then a worker can remotely monitor the weighing instrument, the intelligentization of the Internet of things is realized, an electric bridge adopted by the weighing circuit forms measuring voltage, the measuring sensitivity and precision are improved, and the practicability of the system is improved.
Description
Technical Field
The utility model relates to a rail weighbridge technical field, concretely relates to rail weighbridge digital weighing system based on thing networking.
Background
The rail weigher is a weigher for weighing the load of the railway wagon. The device is divided into 3 types of static rail weighers, dynamic rail weighers and light rail weighers. It is widely used in factory, mine, metallurgy, foreign trade and railway departments to weigh bulk goods in truck. The most models of the existing railroad track scale for coal mine sale are old, the stability is reduced, the weighing accuracy is reduced differently, and along with the continuous popularization of the Internet of things, a digital weighing system of the railroad track scale with the function of the Internet of things is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome foretell not enough, provide a track scale digital weighing system based on thing networking.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a rail weighbridge digital weighing system based on the Internet of things comprises a remote monitoring terminal and a plurality of weighing mechanisms;
the weighing mechanism comprises a weighing instrument, a signal acquisition module, a state acquisition module, a controller and a wireless communication module, wherein the signal acquisition module is used for acquiring and transmitting a weighing digital signal of the weighing instrument to the controller;
the weighing instrument comprises a weighing plate and a weighing module, the weighing module is positioned below the weighing plate and comprises a weighing circuit, the weighing circuit comprises a ceramic piezoresistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an adjustable resistor, a capacitor and an operational amplifier, the ceramic piezoresistor is arranged at the bottom of the weighing plate, one end of a series circuit consisting of the ceramic piezoresistor and the third resistor is grounded, the other end of the series circuit consisting of the ceramic piezoresistor and the third resistor is externally connected with a 5V direct current voltage power supply, one end of the series circuit consisting of the first resistor and the second resistor is grounded, the other end of the series circuit consisting of the first resistor and the second resistor is externally connected with a 5V direct current voltage power supply, and the inverting input end of the operational amplifier is respectively connected with the ceramic piezoresistor and the third resistor through the fourth resistor, the in-phase input end of the operational amplifier is connected with the first resistor and the second resistor through a series circuit formed by a fifth resistor and an adjustable resistor respectively, the adjustable end of the adjustable resistor is connected with the adjustable resistor and the fifth resistor respectively, one end of the capacitor is grounded, the other end of the capacitor is connected with the first resistor and the second resistor respectively, the in-phase input end of the operational amplifier is grounded through a sixth resistor, the inverting input end of the operational amplifier is connected with the output end of the operational amplifier through a seventh resistor, and the output end of the operational amplifier is electrically connected with the signal acquisition module.
In the digital weighing system of the rail weighbridge based on the Internet of things, the remote monitoring terminal can remotely monitor the weighing weight of the weighing instrument in each weighing mechanism and the state of the weighing instrument, so that the remote monitoring of workers is realized, and the intellectualization of the Internet of things is realized;
meanwhile, in a middle weighing module of the weighing instrument, a bridge (consisting of a ceramic piezoresistor, a first resistor, a second resistor and a third resistor) adopted by a weighing circuit forms a measuring voltage, so that the method is a measuring method with high sensitivity. The differential pressure signal is applied to a ceramic piezoresistor located below the weighing plate, and the resistance value of the piezoresistor changes along with the differential pressure, so that the bridge is unbalanced. The unbalance of the bridge causes the change of current, the current is amplified through the operational amplifier, then the signal acquisition module carries out signal acquisition, the analog signal is converted into a digital signal, and the digital signal is transmitted to the controller for processing.
Preferably, the remote monitoring terminal comprises a computer, a notebook or a smart phone.
Preferably, the operational amplifier is LM 2904.
Preferably, the ceramic piezoresistor is a ZNO ceramic piezoresistor, the ZNO is one of high-quality performance in the low-voltage field, the ceramic piezoresistor is formed by adding a plurality of oxides and burning paper for coagulation, a large amount of additives are also amplified, the function of the additive is to form a barrier on a resolution crystallization interface, the other part of the additive is to form a barrier layer in the process of coagulating and cooling the additive, and other additives mainly play a role in controlling crystallization particles, so that the adverse effect on the low-voltage piezoresistor can be prevented, and the weighing precision and the weighing stability are greatly improved.
The utility model has the advantages that: in this track scale digital weighing system based on thing networking, remote monitoring terminal can carry out remote monitoring to the weight that the instrument of weighing weighed and the state of the instrument of weighing in each weighing mechanism, and then has realized that the staff carries out remote monitoring, has realized that the thing networking is intelligent, and the electric bridge that the circuit adopted of weighing constitutes measuring voltage in addition, has improved measuring sensitivity and precision, has improved the practicality of system.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic circuit diagram of the weighing circuit of the present invention.
In the figure: RT1 ceramic piezoresistor, R1 first resistor, R2 second resistor, R3 third resistor, R4 fourth resistor, R5. fifth resistor, R6. sixth resistor, R7. seventh resistor, Rp1 adjustable resistor, C1 capacitor and U1. operational amplifier.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1 and 2, a digital weighing system of a rail weighbridge based on the internet of things comprises a remote monitoring terminal and a plurality of weighing mechanisms;
the weighing mechanism comprises a weighing instrument, a signal acquisition module, a state acquisition module, a controller and a wireless communication module, wherein the signal acquisition module is used for acquiring and transmitting a weighing digital signal of the weighing instrument to the controller;
the weighing instrument comprises a weighing plate and a weighing module, the weighing module is positioned below the weighing plate and comprises a weighing circuit, the weighing circuit comprises a ceramic piezoresistor RT1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an adjustable resistor Rp1, a capacitor C1 and an operational amplifier U1, the ceramic piezoresistor RT1 is arranged at the bottom of the weighing plate, one end of a series circuit consisting of the ceramic piezoresistor RT1 and the third resistor R3 is grounded, the other end of the series circuit consisting of the ceramic piezoresistor RT1 and the third resistor R3 is externally connected with a 5V direct-current voltage power supply, one end of a series circuit consisting of the first resistor R1 and the second resistor R2 is grounded, the other end of the series circuit consisting of the first resistor R1 and the second resistor 686R 9 is externally connected with a 5V direct-current power supply, and the reverse phase piezoresistor RT 828653 of the operational amplifier U56 is respectively connected with the fourth resistor RT1, the non-inverting input end of the operational amplifier U1 is connected with a first resistor R1 and a second resistor R2 through a series circuit formed by a fifth resistor R5 and an adjustable resistor Rp1, the adjustable end of the adjustable resistor Rp1 is connected with an adjustable resistor Rp1 and a fifth resistor R5, one end of a capacitor C1 is grounded, the other end of the capacitor C1 is connected with the first resistor R1 and the second resistor R2, the non-inverting input end of the operational amplifier U1 is grounded through a sixth resistor R6, the inverting input end of the operational amplifier U1 is connected with the output end of the operational amplifier U1 through a seventh resistor R7, and the output end of the operational amplifier U1 is electrically connected with the signal acquisition module.
In the digital weighing system of the rail weighbridge based on the Internet of things, the remote monitoring terminal can remotely monitor the weighing weight of the weighing instrument in each weighing mechanism and the state of the weighing instrument, so that the remote monitoring of workers is realized, and the intellectualization of the Internet of things is realized;
meanwhile, in a middle weighing module of the weighing instrument, a bridge (consisting of a ceramic piezoresistor RT1, a first resistor R1, a second resistor R2 and a third resistor R3) adopted by a weighing circuit forms a measuring voltage, so that the method is a measuring method with high sensitivity. The differential pressure signal is applied to a ceramic piezo resistor RT1 located below the weigh plate, the resistance of the piezo resistor changing with the differential pressure, causing bridge imbalance. The unbalance of the bridge causes the change of current, the current is amplified through the operational amplifier U1, then signal acquisition is carried out by a following signal acquisition module, an analog signal is converted into a digital signal, and the digital signal is transmitted to the controller for processing.
In this example: the remote monitoring terminal comprises a computer, a notebook or a smart phone.
In this example: the model of the operational amplifier U1 is LM 2904.
In this example: the ceramic piezoresistor RT1 is a ZNO ceramic piezoresistor RT1, in the low-voltage field, the ZNO is one of high-quality performance, the ceramic piezoresistor RT1 is formed by adding a plurality of oxides and burning paper for coagulation, and the operational amplifier U1 is provided with a large amount of additives, so that the barrier is formed on a resolution crystallization interface, the barrier layer is formed in the coagulation and cooling process of the additives on the other part, and other additives mainly play a role in controlling crystallization particles, so that the adverse effect on the low-voltage piezoresistor can be prevented, and the weighing precision and stability are greatly improved.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The utility model provides a rail weighbridge digital weighing system based on thing networking which characterized in that: the device comprises a remote monitoring terminal and a plurality of weighing mechanisms;
the weighing mechanism comprises a weighing instrument, a signal acquisition module, a state acquisition module, a controller and a wireless communication module, wherein the signal acquisition module is used for acquiring and transmitting a weighing digital signal of the weighing instrument to the controller;
the weighing instrument comprises a weighing plate and a weighing module, the weighing module is positioned below the weighing plate and comprises a weighing circuit, the weighing circuit comprises a ceramic piezoresistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an adjustable resistor, a capacitor and an operational amplifier, the ceramic piezoresistor is arranged at the bottom of the weighing plate, one end of a series circuit consisting of the ceramic piezoresistor and the third resistor is grounded, the other end of the series circuit consisting of the ceramic piezoresistor and the third resistor is externally connected with a 5V direct current voltage power supply, one end of the series circuit consisting of the first resistor and the second resistor is grounded, the other end of the series circuit consisting of the first resistor and the second resistor is externally connected with a 5V direct current voltage power supply, and the inverting input end of the operational amplifier is respectively connected with the ceramic piezoresistor and the third resistor through the fourth resistor, the in-phase input end of the operational amplifier is connected with the first resistor and the second resistor through a series circuit formed by a fifth resistor and an adjustable resistor respectively, the adjustable end of the adjustable resistor is connected with the adjustable resistor and the fifth resistor respectively, one end of the capacitor is grounded, the other end of the capacitor is connected with the first resistor and the second resistor respectively, the in-phase input end of the operational amplifier is grounded through a sixth resistor, the inverting input end of the operational amplifier is connected with the output end of the operational amplifier through a seventh resistor, and the output end of the operational amplifier is electrically connected with the signal acquisition module.
2. The Internet of things-based track scale digital weighing system of claim 1, wherein: the remote monitoring terminal comprises a computer, a notebook or a smart phone.
3. The Internet of things-based track scale digital weighing system of claim 1, wherein: the model of the operational amplifier is LM 2904.
4. The Internet of things-based track scale digital weighing system of claim 1, wherein: the ceramic piezoresistor is a ZNO ceramic piezoresistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922280111.3U CN211651794U (en) | 2019-12-18 | 2019-12-18 | Rail weighbridge digital weighing system based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922280111.3U CN211651794U (en) | 2019-12-18 | 2019-12-18 | Rail weighbridge digital weighing system based on Internet of things |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211651794U true CN211651794U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922280111.3U Active CN211651794U (en) | 2019-12-18 | 2019-12-18 | Rail weighbridge digital weighing system based on Internet of things |
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| Country | Link |
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| CN (1) | CN211651794U (en) |
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2019
- 2019-12-18 CN CN201922280111.3U patent/CN211651794U/en active Active
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