Conductivity online monitor supporting HART (Highway Addressable Remote Transducer) communication

Abstract

The invention relates to the technical field of water quality monitoring, in particular to an on-line conductivity monitor supporting HART (Highway Addressable Remote Transducer) communication. Comprising a fixing ring, a conductivity electrode, two waterproof shells, two coils, an embedded instrument chip, a wire and a traction assembly, the two waterproof shells are fixedly connected with the fixing ring and located at the two ends of the fixing ring, the two coils are embedded in the corresponding waterproof shells respectively and are coaxially arranged, the embedded instrument chip is fixedly connected with the fixing ring, and the wire is arranged on the fixing ring. The embedded instrument chip is arranged in the fixing ring and located in the fixing ring, the conductivity electrode is located below the fixing ring, the two ends of the wire are connected with the embedded instrument chip and the conductivity electrode respectively, the traction assembly is connected with the fixing ring and the conductivity electrode respectively, and by the adoption of the mode, metal sheets of the electrodes can be prevented from being corroded in sewage, and the service life of the sensor is prolonged; data stability is good, and maintenance times are greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to an online conductivity monitor supporting HART communication. Background Art

[0002] Conductivity measures the electrical conductivity of water to monitor the content of dissolved ions in it and analyze changing trends in water quality. Traditional conductivity meters use two electrodes made of corrosion-resistant metal. A voltage is applied across the electrodes, generating a current through the water. The current is then measured to calculate conductivity.

[0003] However, existing sensors usually use electrodes in direct contact with sewage for measurement. The sensor electrodes are easily corroded and contaminated by chemicals in the sewage, resulting in a short service life. Summary of the Invention

[0004] The purpose of the present invention is to provide an online conductivity monitor supporting HART communication, which solves the problem that existing sensors usually use electrodes in direct contact with sewage for measurement, and the sensor electrodes are easily corroded and contaminated by chemical substances in sewage, resulting in a short service life.

[0005] To achieve the above-mentioned objectives, the present invention adopts an online conductivity monitor supporting HART communication, comprising a fixed ring, a conductivity electrode, two waterproof housings, two coils, an embedded instrument chip, a wire and a traction assembly, wherein the two waterproof housings are fixedly connected to the fixed ring and are located at both ends of the fixed ring, the two coils are respectively embedded in the corresponding waterproof housings, and the two coils are coaxially arranged, the embedded instrument chip is fixedly connected to the fixed ring and is located in the fixed ring, the conductivity electrode is located below the fixed ring, the two ends of the wire are respectively connected to the embedded instrument chip and the conductivity electrode, and the traction assembly is respectively connected to the fixed ring and the conductivity electrode.

[0006] The traction assembly includes a base, a bracket, a fixing unit, a fixing sleeve, a traction rod and a lifting unit. The bracket is fixedly arranged above the base, the fixing unit is arranged above the bracket, the bracket has a mounting groove, the lifting unit is arranged in the mounting groove, one end of the traction rod is connected to the lifting unit, the fixing sleeve is connected to the other end of the traction rod, and the conductivity electrode is fixedly connected to the fixing sleeve.

[0007] Among them, the lifting unit includes a threaded rod, a motor and a sleeve. The motor is fixedly connected to the bracket and is located in the mounting groove. The threaded rod is rotatably set in the mounting groove. The threaded rod is also connected to the output end of the motor and is located in the mounting groove. The sleeve is sleeved on the outside of the threaded rod and is threadedly matched with the threaded rod. The sleeve is also fixedly connected to the traction rod.

[0008] In which, the fixing unit includes a U-shaped frame, two supporting springs and two sleeves. The U-shaped frame is fixedly connected to the bracket and is located on the outer wall of the bracket. The two sleeves are symmetrically arranged in the U-shaped frame, and the two ends of each supporting spring are respectively fixedly connected to the U-shaped frame and the corresponding sleeve.

[0009] Wherein, the fixing unit further includes two positioning arc blocks, and the two positioning arc blocks are respectively fixedly connected to the corresponding jackets and are respectively located above the jackets.

[0010] The conductivity online monitor supporting HART communication further includes two sets of anti-slip components, and both sets of anti-slip components are arranged on the outer side wall of the base.

[0011] Among them, the anti-slip component includes a mounting plate, a pedal board, a fixed cone rod and an anti-slip pad. The mounting plate is fixedly connected to the base and is located on the outer side wall of the base. The fixed cone rod is slidably connected to the mounting plate and passes through the mounting plate. The pedal board is fixedly connected to the fixed cone rod and is located above the fixed cone rod. The anti-slip pad is fixedly connected to the pedal board and is located above the pedal board.

[0012] Among them, the anti-slip component also includes a connecting rod and a traction spring. The connecting rod is fixedly connected to the fixed cone rod and is sleeved on the outer wall of the fixed cone rod. The two ends of the traction spring are respectively fixedly connected to the pedal and the mounting plate, and are sleeved on the outer wall of the fixed cone rod.

[0013] The present invention discloses an online conductivity monitor supporting HART communication. The sensor comprises a fixing ring, a waterproof housing, two coils, and an embedded instrument chip. The two coils are respectively sealed within the waterproof housing. The two coils are divided into a primary coil and a secondary coil. The embedded instrument chip transmits a high-frequency AC sinusoidal wave signal to the primary coil. The secondary coil generates an induced AC signal due to electromagnetic induction. The conductivity electrode driven by the traction assembly is immersed in sewage. The amplitude of the induced signal is related to the conductive ion content in the sewage. The signal analysis unit of the embedded instrument chip collects and amplifies the AC signal induced by the other coil through a signal detection circuit, and then transmits the processed signal to a data processing module. The data processing module calculates the conductive ion content in the sewage based on a pre-established correspondence model between the signal amplitude and the conductive ion content. In the above process, the conductivity monitoring adopts a non-contact method. The sensor is not immersed in the sewage and does not directly contact the liquid. The above method can avoid corrosion of the metal sheet of the electrode in the sewage, increase the service life of the sensor, improve data stability, and greatly reduce the number of maintenance times. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of the conductivity online monitor supporting HART communication of the present invention.

[0016] Figure 2 It is a structural side view of the conductivity online monitor supporting HART communication of the present invention.

[0017] Figure 3 It is a structural front view of the conductivity online monitor supporting HART communication of the present invention.

[0018] Figure 4 The present invention Figure 3 AA line structural cross-sectional view.

[0019] Figure 5 It is a partial structural cross-sectional view of the conductivity online monitor supporting HART communication of the present invention.

[0020] 100-fixing ring, 101-conductivity electrode, 102-waterproof housing, 103-coil, 104-embedded instrument chip, 105-wire, 106-base, 107-bracket, 108-fixing sleeve, 109-traction rod, 110-mounting slot, 111-threaded rod, 112-motor, 113-sleeve, 114-U-shaped frame, 115-holding spring, 116-clamping sleeve, 117-positioning arc block, 118-mounting plate, 119-pedal, 120-fixed cone rod, 121-anti-slip pad, 122-connecting rod, 123-traction spring. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0022] See also Figures 1 to 5 The present invention provides an online conductivity monitor supporting HART communication, comprising a fixing ring 100, a conductivity electrode 101, two waterproof housings 102, two coils 103, an embedded meter chip 104, a wire 105, and a traction assembly. The two waterproof housings 102 are fixedly connected to the fixing ring 100 and are located at both ends of the fixing ring 100. The two coils 103 are respectively embedded in the corresponding waterproof housings 102 and are coaxially arranged. The embedded meter chip 104 is fixedly connected to the fixing ring 100 and is located in the fixing ring 100. The conductivity electrode 101 is located below the fixing ring 100. The two ends of the wire 105 are respectively connected to the embedded meter chip 104 and the conductivity electrode 101. The traction assembly is respectively connected to the fixing ring 100 and the conductivity electrode 101.

[0023] In this embodiment, the sensor comprises the fixing ring 100, the waterproof housing 102, the two coils 103, and the embedded meter chip 104. The two coils 103 are respectively sealed in the waterproof housing 102. The two coils 103 are divided into a primary coil and a secondary coil. The embedded meter chip 104 transmits a high-frequency AC sinusoidal wave signal to the primary coil. The secondary coil generates an induced AC signal due to electromagnetic induction. The conductivity electrode 101 driven by the traction assembly is immersed in the sewage. The amplitude of the induced signal is related to the conductive ion content in the sewage. The signal analysis unit of the embedded meter chip 104 collects and amplifies the AC signal induced by the other coil 103 through a signal detection circuit, and then transmits the processed signal to a data processing module. The data processing module calculates the conductive ion content in the sewage based on a pre-established correspondence model between the signal amplitude and the conductive ion content. In the above process, the conductivity monitoring adopts a non-contact method. The sensor is not immersed in the sewage and does not come into direct contact with the liquid.

[0024] The instrument's operating principle: The embedded instrument chip 104 generates a 1K sinusoidal wave signal, which is used to generate an excitation signal through a MOS tube and applied to the sensor's primary coil. The signal from the secondary coil undergoes A / D conversion and is stored on the microcontroller. Using FFT digital filtering technology, the amplitude of the signal at a specific frequency is extracted. The signal amplitude is linearly correlated with the conductivity value in the sewage. A two-point calibration is used to calculate the K and B values ​​of the amplitude-conductivity relationship curve: Y = KX + B. X (amplitude) yields Y (conductivity). This approach prevents corrosion of the electrode metal sheet in sewage, extending the sensor's service life, improving data stability, and significantly reducing maintenance.

[0025] Furthermore, the traction assembly includes a base 106, a bracket 107, a fixing unit, a fixing sleeve 108, a traction rod 109 and a lifting unit. The bracket 107 is fixedly arranged above the base 106, the fixing unit is arranged above the bracket 107, the bracket 107 has a mounting groove 110, the lifting unit is arranged in the mounting groove 110, one end of the traction rod 109 is connected to the lifting unit, the fixing sleeve 108 is connected to the other end of the traction rod 109, and the conductivity electrode 101 is fixedly connected to the fixing sleeve 108.

[0026] In this embodiment, when in use, the sensor is fixed in the fixing unit of the bracket 107, and then the lifting unit in the installation groove 110 is started. The lifting unit drives the traction rod 109 to move downward, and the conductivity electrode 101 will be driven downward, so that the conductivity electrode 101 enters the sewage, and then the sewage is monitored by starting the lifting component.

[0027] Furthermore, the lifting unit includes a threaded rod 111, a motor 112 and a sleeve 113. The motor 112 is fixedly connected to the bracket 107 and is located in the mounting groove 110. The threaded rod 111 is rotatably set in the mounting groove 110. The threaded rod 111 is also connected to the output end of the motor 112 and is located in the mounting groove 110. The sleeve 113 is sleeved on the outside of the threaded rod 111 and threadedly engaged with the threaded rod 111. The sleeve 113 is also fixedly connected to the traction rod 109.

[0028] In this embodiment, when controlling the conductivity electrode 101 to move downward, the motor 112 in the mounting groove 110 is started, and the motor 112 controls the threaded rod 111 to rotate in the mounting groove 110. Since the sleeve 113 is threadedly engaged with the threaded rod 111, the sleeve 113 moves downward in the mounting groove 110. At the same time, the sleeve 113 drives the conductivity electrode 101 to move downward through the traction rod 109 and the fixing sleeve 108. After the movement is appropriate, the motor 112 is stopped.

[0029] Furthermore, the fixing unit includes a U-shaped frame 114, two supporting springs 115 and two sleeves 116. The U-shaped frame 114 is fixedly connected to the bracket 107 and is located on the outer wall of the bracket 107. The two sleeves 116 are symmetrically arranged in the U-shaped frame 114. The two ends of each supporting spring 115 are respectively fixedly connected to the U-shaped frame 114 and the corresponding sleeve 116.

[0030] In this embodiment, when in use, by placing the sensor between the two sleeves 116 , each sleeve 116 is compressed to squeeze the holding spring 115 respectively, and at the same time, under the elastic force of the holding spring 115 , the two sleeves 116 clamp and fix the sensor.

[0031] Furthermore, the fixing unit further includes two positioning arc blocks 117 , and the two positioning arc blocks 117 are respectively fixedly connected to the corresponding jackets 116 and are respectively located above the jackets 116 .

[0032] In this embodiment, by arranging the positioning arc block 117 above each of the jackets 116 , the sensor can be easily inserted between the two jackets 116 by squeezing the positioning arc block 117 , thereby facilitating operation.

[0033] Furthermore, the conductivity online monitor supporting HART communication further includes two sets of anti-slip components, and both sets of the anti-slip components are arranged on the outer side wall of the base 106 .

[0034] In this embodiment, the anti-skid component is provided on the outer side of the base 106 to prevent the base 106 from shifting on the ground, thereby improving the overall stability of the device.

[0035] Furthermore, the anti-slip assembly includes a mounting plate 118, a pedal board 119, a fixed cone rod 120 and an anti-slip pad 121. The mounting plate 118 is fixedly connected to the base 106 and is located on the outer wall of the base 106. The fixed cone rod 120 is slidably connected to the mounting plate 118 and passes through the mounting plate 118. The pedal board 119 is fixedly connected to the fixed cone rod 120 and is located above the fixed cone rod 120. The anti-slip pad 121 is fixedly connected to the pedal board 119 and is located above the pedal board 119.

[0036] In this embodiment, when in use, the device is moved to the detection area, and then the staff applies force to step on the pedal 119 on the outside of the base 106. Then, the fixed cone rod 120 will be forced to slide down in the mounting plate 118 until the fixed cone rod 120 is inserted into the ground. By arranging the anti-slip pad 121 above the pedal 119, the friction of the staff on the pedal 119 can be increased, which facilitates the fixed cone rod 120 to enter the ground. In the above manner, the fixed cone rod 120 is inserted into the ground to limit the base 106, thereby avoiding the device from shifting during use and improving stability.

[0037] Furthermore, the anti-slip assembly also includes a connecting rod 122 and a traction spring 123. The connecting rod 122 is fixedly connected to the fixed cone rod 120 and is sleeved on the outer wall of the fixed cone rod 120. The two ends of the traction spring 123 are respectively fixedly connected to the pedal 119 and the mounting plate 118, and are sleeved on the outer wall of the fixed cone rod 120.

[0038] In this embodiment, the connecting rod 122 is arranged on the outside of the fixed cone rod 120, and the connecting rod 122 limits the range of movement of the fixed cone rod 120 on the mounting plate 118, thereby preventing the fixed cone rod 120 from detaching from the mounting plate 118. The staff can also conveniently move the fixed cone rod 120 out of the ground through the connecting rod 122, and the operation is very simple. In addition, the traction spring 123 is provided. When the fixed cone rod 120 is not in use, the traction spring 123 will support the pedal 119 to prevent the fixed cone rod 120 from sagging and contacting the ground.

[0039] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A conductivity online monitor supporting HART communication, characterized in that: It includes a fixing ring, a conductivity electrode, two waterproof shells, two coils, an embedded meter chip, a wire and a traction assembly. The two waterproof shells are fixedly connected to the fixing ring and are located at both ends of the fixing ring. The two coils are respectively embedded in the corresponding waterproof shells and are coaxially arranged. The embedded meter chip is fixedly connected to the fixing ring and is located in the fixing ring. The conductivity electrode is located below the fixing ring. The two ends of the wire are respectively connected to the embedded meter chip and the conductivity electrode. The traction assembly is respectively connected to the fixing ring and the conductivity electrode.

2. The conductivity online monitor supporting HART communication according to claim 1, characterized in that: The traction assembly includes a base, a bracket, a fixing unit, a fixing sleeve, a traction rod and a lifting unit. The bracket is fixedly arranged above the base, the fixing unit is arranged above the bracket, the bracket has a mounting groove, the lifting unit is arranged in the mounting groove, one end of the traction rod is connected to the lifting unit, the fixing sleeve is connected to the other end of the traction rod, and the conductivity electrode is fixedly connected to the fixing sleeve.

3. The conductivity online monitor supporting HART communication according to claim 2, wherein: The lifting unit includes a threaded rod, a motor and a sleeve. The motor is fixedly connected to the bracket and is located in the mounting groove. The threaded rod is rotatably set in the mounting groove. The threaded rod is also connected to the output end of the motor and is located in the mounting groove. The sleeve is sleeved on the outside of the threaded rod and threadedly engaged with the threaded rod. The sleeve is also fixedly connected to the traction rod.

4. The conductivity online monitor supporting HART communication according to claim 3, wherein: The fixing unit includes a U-shaped frame, two supporting springs and two sleeves. The U-shaped frame is fixedly connected to the bracket and is located on the outer side wall of the bracket. The two sleeves are symmetrically arranged in the U-shaped frame. The two ends of each supporting spring are respectively fixedly connected to the U-shaped frame and the corresponding sleeve.

5. The conductivity online monitor supporting HART communication according to claim 4, characterized in that: The fixing unit further includes two positioning arc blocks, which are respectively fixedly connected to the corresponding jackets and are respectively located above the jackets.

6. The conductivity online monitor supporting HART communication according to claim 2, characterized in that: The conductivity online monitor supporting HART communication further includes two sets of anti-slip components, and both sets of the anti-slip components are arranged on the outer side wall of the base.

7. The conductivity online monitor supporting HART communication according to claim 6, characterized in that: The anti-slip assembly includes a mounting plate, a pedal board, a fixed cone rod and an anti-slip pad. The mounting plate is fixedly connected to the base and is located on the outer side wall of the base. The fixed cone rod is slidably connected to the mounting plate and passes through the mounting plate. The pedal board is fixedly connected to the fixed cone rod and is located above the fixed cone rod. The anti-slip pad is fixedly connected to the pedal board and is located above the pedal board.

8. The conductivity online monitor supporting HART communication according to claim 7, characterized in that: The anti-slip assembly also includes a connecting rod and a traction spring. The connecting rod is fixedly connected to the fixed cone rod and is sleeved on the outer wall of the fixed cone rod. The two ends of the traction spring are respectively fixedly connected to the pedal and the mounting plate and are sleeved on the outer wall of the fixed cone rod.

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