CN113155019A

CN113155019A - Valve opening and closing angle position wireless sensor based on Internet of things

Info

Publication number: CN113155019A
Application number: CN202110407173.5A
Authority: CN
Inventors: 万华; 陈盾; 陈煜�
Original assignee: Shanghai Fanya Electromechanical Equipment Co ltd
Current assignee: Shanghai Fanya Electromechanical Equipment Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-07-23

Abstract

The invention relates to the technical field of sensors and discloses a wireless sensor for the opening and closing angle position of a valve based on the Internet of things, which comprises a lower computer and an upper computer, the lower computer transmits the information of the valve turntable to the upper computer, the upper computer is used for receiving the information sent by the lower computer and transmitting the information to users, the lower computer comprises a valve turntable and a circuit board, the circuit board is provided with a plurality of groups of inductors, the plurality of groups of inductors are uniformly distributed on a half-circle extending outwards from the valve turntable, the main shaft of the valve turntable is provided with the magnet pointer, a plurality of groups of inductors are matched with the magnet pointer to trigger different signals, the invention can accurately determine the position of the valve turntable through the matching of the inductors and the magnet pointer, the message is received to the second microprocessor through a wireless receiver in the upper computer, and can also be matched with external configuration software through an RS485 interface circuit for a user to check.

Description

Valve opening and closing angle position wireless sensor based on Internet of things

Technical Field

The invention belongs to the technical field of sensors, and particularly relates to a valve opening and closing angle position wireless sensor based on the Internet of things.

Background

Industrial valves function in piping systems to control fluid flow, regulate fluid pressure, and change fluid flow direction. The actuator for controlling the valve is pneumatic, electric, etc. and its control mode usually adopts wired transmission. The control method is suitable for common places such as industrial factories and the like, has perfect working conditions, is convenient for wiring and provides various power sources. For the environment such as the field, remote, be unfavorable for laying such as cable, trachea, the flexibility is poor, and exposes in the field for a long time, and easy damage is unfavorable for the maintenance.

In some long-distance pipeline transmission systems, a certain number of valves are distributed along the pipeline system, the valves are far away from each other and far away from a monitoring center, manual operation or pneumatic and electric operation based on wired transmission is adopted to control the valves, and the cost is high. When a cable is damaged or a determination of which valve is damaged cannot be made, in order to confirm the latest state of the valve, personnel are required to be sent to check one by one, the mode consumes both manpower and time, so that the valve is necessary to be remotely controlled in a wireless mode, and a power source and a power supply device are arranged at a valve terminal to ensure that the valve normally works in a designed life cycle.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the wireless sensor for the opening and closing angle positions of the valves based on the internet of things, which effectively solves the problem that in some long-distance pipeline transmission systems, a certain number of valves are distributed along the pipeline system, the valves are far away from each other and far away from a monitoring center, and the valves are controlled in a manual mode or a pneumatic mode, an electric mode and the like based on wired transmission, so that the cost is high. When the cable is damaged or which valve is damaged cannot be determined, in order to confirm the latest state of the valve, personnel often need to be sent to check one by one, and the mode consumes both manpower and time, so that the valve is necessary to be remotely controlled in a wireless mode, and a power source and a power supply device are arranged at the end of the valve, so that the normal work of the valve in the designed life cycle is guaranteed.

In order to achieve the purpose, the invention provides the following technical scheme: a wireless sensor for the opening and closing angle position of a valve based on the Internet of things comprises a lower computer and an upper computer, wherein the lower computer is used for receiving a command sent by the upper computer and transmitting information of a valve turntable to the upper computer, and the upper computer is used for receiving information sent by the lower computer and transmitting the information to a user;

the lower computer comprises a valve turntable and a circuit board, wherein a plurality of groups of inductors are mounted on the circuit board, the plurality of groups of inductors are uniformly distributed on a semi-arc extending outwards from the valve turntable, a magnet pointer is mounted on a main shaft of the valve turntable, the plurality of groups of inductors are matched with the magnet pointer to trigger different signals, a first microprocessor and an LORA wireless transmitter are mounted inside the circuit board, the first microprocessor encodes the trigger signals to form messages to be sent to the wireless transmitter, the wireless transmitter is sent to the upper computer, a battery is mounted inside the lower computer to supply power, and the lower computer can also supply power through external direct current;

the upper computer comprises a wireless receiver and a second microprocessor, the wireless receiver is used for receiving a valve opening and closing angle position message transmitted by the lower computer, the wireless receiver transmits the received valve opening and closing angle position message to the second microprocessor, the second microprocessor stores the valve opening and closing angle position information in the message in a nonvolatile memory after receiving the valve opening and closing angle position message, the upper computer is provided with a first interface circuit, and the second microprocessor is connected with external configuration software or a touch screen through the first interface circuit and is used for external equipment to read the information in the nonvolatile memory.

The wireless transmitter adopts LORA wireless communication technology, first microprocessor adopts 32 bit processors, first microprocessor all has very low consumption with wireless transmitter, the battery is installed to the next machine.

The lower computer is provided with a second interface circuit, and the first processor can send the message to external configuration equipment through the second interface circuit.

The wireless receivers can be arranged in two groups, and errors caused by the fact that the wireless receivers receive information are prevented by arranging the two groups of wireless receivers.

The lower computer is internally provided with a battery and can also be powered by external direct current.

The upper computer is connected with an external direct current power supply, and the lower computer is provided with a rechargeable battery.

The upper computer is connected with the internet and sends the valve turntable information transmitted by the lower computer to the mobile phone APP, the management center or the automatic terminal through the internet.

The first interface circuit and the second interface circuit both adopt RS-485 interfaces, and the RS-485 interfaces adopt a combination of a balanced driver and a differential receiver, so that the common-mode interference resistance is enhanced, namely, the noise interference resistance is good.

The inductor adopts hall element, the inductor can set up the multiunit, the inductor sets up 10 groups at the lowest, the inductor is 4 centimetres with the farthest distance of magnet pointer.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the position of the valve turntable can be accurately determined by matching the inductor with the magnet pointer, the triggering signal can be coded and formed into a message to be sent to the wireless transmitter by matching the wireless transmitter with the first microprocessor, the message is sent to the upper computer by the wireless transmitter, the message is received by the wireless receiver in the upper computer and is received to the second microprocessor, and the message is matched with external configuration software by the first interface circuit to be watched by a user;

2. the power consumption of the inductor, the wireless transmitter and the first microprocessor is very low, the lower computer can be used for 5 years through the battery, the rechargeable battery is also arranged in the upper computer, the upper computer can work for 8 hours under the condition of external power failure, and the use of the device is not hindered by short-term power failure;

3. the first interface circuit and the second interface circuit adopt RS485 interface circuits, the RS485 interface circuits are provided with networking communication interfaces which can be connected with an external network, and users can know the opening and closing angle positions of the valve at any time by connecting through a mobile phone APP or an automatic terminal;

4. the upper computer sets 2 wireless receivers, and sets two wireless receivers as a main receiver and a sub receiver, so that errors of received information of the wireless receivers are prevented, and the memory adopts a nonvolatile memory to prevent data loss.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a diagram of the valve carousel system of the present invention;

FIG. 3 is a block diagram of a circuit board system of the present invention;

FIG. 4 is a system block diagram of the upper computer of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, 2, 3 and 4, the wireless sensor for the opening and closing angle position of the valve based on the internet of things comprises a lower computer and an upper computer, wherein the lower computer is used for receiving a command sent by the upper computer and transmitting information of a valve turntable to the upper computer, and the upper computer is used for receiving information sent by the lower computer and transmitting the information to a user;

the lower computer comprises a valve turntable and a circuit board, the circuit board is provided with a plurality of groups of inductors, the plurality of groups of inductors are uniformly distributed on a half circle extending outwards from the valve turntable, a magnet pointer is arranged on a main shaft of the valve turntable, the plurality of groups of inductors are matched with the magnet pointer to trigger different signals, a first microprocessor and an LORA wireless transmitter are arranged in the circuit board, the first microprocessor encodes the trigger signals to form messages and transmits the messages to the wireless transmitter, the wireless transmitter transmits the messages to the upper computer, a battery is arranged in the lower computer to supply power, and the lower computer can also supply power through external direct current; the host computer includes wireless receiver and second microprocessor, wireless receiver is used for receiving the valve switching angle position message of host computer transmission, wireless receiver sends the valve switching angle position message received to second microprocessor, after second microprocessor received valve switching angle position message, keep the valve switching angle position information in the message in nonvolatile memory, first interface circuit is installed to the host computer, second microprocessor passes through first interface circuit and is connected with outside configuration software or touch-sensitive screen, supply the information in the external equipment reading nonvolatile memory.

The wireless transmitter adopts LORA wireless communication technology, and first microprocessor adopts 32 bit microprocessor, and first microprocessor and wireless transmitter all have very low efficiency, and the next computer internally mounted has the battery.

The upper computer is connected with an external direct current power supply and is supplied with power through the external direct current, and the upper computer is provided with a rechargeable battery.

The host computer is connected with the internet, and the host computer sends the valve turntable information transmitted by the lower computer to the mobile phone APP, the management center or the automatic terminal through the internet.

The first interface circuit and the second interface circuit both adopt RS-485 interfaces, and the RS-485 interfaces adopt the combination of a balanced driver and a differential receiver, so that the common-mode interference resistance is enhanced, and the noise interference resistance is good.

The inductor adopts hall element, and the inductor can set up the multiunit, and the inductor sets up 10 groups at the lowest, and the inductor is 4 centimetres closely with the farthest response of magnet pointer.

The working principle is as follows: when the scheme of the invention is implemented concretely, when the valve turntable drives the magnetic pointer to rotate, the magnetic pointer is triggered by matching a plurality of groups of inductors with the magnetic pointer, when the magnetic pointer is close to a certain inductor, the inductor triggers and sends out a level signal, and other inductors trigger other level signals for distinguishing, the wireless transmitter adopts the LORA wireless communication technology, the frequency is 433MHZ, the wireless transmitter has the characteristic of extremely low power consumption and long-distance transmission, the antenna gain of the wireless transmitter is 2dB, the wireless transmitter is horizontally arranged in an inner cavity of a mechanism, the triggered signals are captured by a first microprocessor, the first microprocessor encodes the trigger signal and forms a message to be sent to the wireless transmitter, the message is sent to an upper computer through the wireless transmitter, the message is received through a wireless receiver in the upper computer and is received to a second microprocessor, and the message content is stored in a memory by the second microprocessor, simultaneously the second microprocessor passes through second interface circuit and is connected with outside configuration software or touch-sensitive screen, supply the user to look over, it is worth mentioning, the inductor, wireless transmitter and first microprocessor's consumption is very low, can use 5 years time through inside battery power supply, rechargeable battery is also installed to the inside of host computer, even the work of external outage host computer persists 8 hours, through setting up 2 wireless receiver, set up two wireless receiver as a master and a slave, prevent that wireless receiver's receipt information from producing the mistake, the memory adopts nonvolatile memory, prevent data loss. The lower computer and the upper computer system can adopt 24V direct current power supplies of industrial standard, first interface circuit and second interface circuit adopt RS485 interface circuit, RS485 interface circuit has networking communication interface and can be connected with external network, supplementary user of service is connected through cell-phone APP or automatic terminal, the user of being convenient for can look over valve switching angle position at any time and open information.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. a kind of valve opening and closing angle position wireless sensor based on Internet of Things, is characterized in that: comprise lower position computer and upper position computer, described lower position computer is used for receiving the order that upper position computer sends and valve turntable information is transmitted to described upper position computer , the upper computer is used to receive the information sent by the lower computer and transmit it to the user;

The lower computer includes a valve turntable and a circuit board. The circuit board is installed with multiple sets of sensors, and the multiple sets of sensors are evenly distributed on the half-circle extending outwards of the valve turntable. A magnet pointer is installed on the main shaft of the valve turntable. , a plurality of groups of the sensors and the magnet pointers cooperate to trigger different signals, the first microprocessor and the LORA wireless transmitter are installed inside the circuit board, and the first microprocessor encodes the trigger signal to form a message Sent to the wireless transmitter, the wireless transmitter is sent to the upper computer, the lower computer is internally installed with a battery for power supply, and the lower computer can also be powered by external DC;

The upper computer includes a wireless receiver and a second microprocessor, the wireless receiver is used to receive the valve opening and closing angle position message transmitted by the lower computer, and the wireless receiver receives the valve opening and closing angle position message. It is transmitted to the second microprocessor. After receiving the valve opening and closing angle position message, the second microprocessor stores the valve opening and closing angle position information in the message in the non-volatile memory. The upper computer is installed There is a first interface circuit, and the second microprocessor is connected with external configuration software or a touch screen through the first interface circuit, so that the external device can read the information in the non-volatile memory.

2. A kind of wireless sensor of valve opening and closing angle position based on Internet of Things according to claim 1, is characterized in that: described wireless transmitter adopts LORA wireless communication technology, described first microprocessor adopts 32-bit microprocessor The first microprocessor and the wireless transmitter both have very low power consumption, and the battery installed in the lower computer can keep the lower computer working for a long time.

3 . The wireless sensor for valve opening and closing angle position based on the Internet of Things according to claim 1 , wherein the lower computer is provided with a second interface circuit, and the first processor can pass the second interface circuit. 4 . Send the message to the external configuration device.

4. A wireless sensor for valve opening and closing angle position based on the Internet of Things according to claim 1, characterized in that: two groups of the wireless receivers can be set, and by setting two groups of the wireless receivers, wireless reception is prevented An error occurred when the receiver received the message.

5 . The wireless sensor for valve opening and closing angle position based on the Internet of Things according to claim 1 , wherein the host computer is powered by external direct current, and the host computer is also equipped with a rechargeable battery. 6 .

6. A kind of valve opening and closing angle position wireless sensor based on Internet of Things according to claim 1, it is characterized in that: described upper computer is connected with Internet, and described upper computer transmits valve dial information transmitted by lower computer through Internet Send to mobile APP, management center or automatic terminal.

7 . The wireless sensor for valve opening and closing angle position based on the Internet of Things according to claim 1 , wherein the first interface circuit and the second interface circuit both use RS-485 interfaces, and the RS-485 The interface adopts a combination of balanced driver and differential receiver, which has enhanced anti-common mode interference ability and good anti-noise interference.

8. A wireless sensor for valve opening and closing angle position based on the Internet of Things according to claim 1, characterized in that: the sensor adopts Hall element, the sensor can be set in multiple groups, and the sensor is the lowest Set 10 groups, and the farthest sensing distance between the sensor and the magnet pointer is 4 cm.