CN217542201U - Pole axial pressure monitoring devices is embraced to stand alone type - Google Patents
Pole axial pressure monitoring devices is embraced to stand alone type Download PDFInfo
- Publication number
- CN217542201U CN217542201U CN202122833710.0U CN202122833710U CN217542201U CN 217542201 U CN217542201 U CN 217542201U CN 202122833710 U CN202122833710 U CN 202122833710U CN 217542201 U CN217542201 U CN 217542201U
- Authority
- CN
- China
- Prior art keywords
- module
- pole
- axial force
- data transmission
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model provides a pole axial pressure monitoring devices is embraced to stand alone type, include: the device comprises an axial force measuring module, a lifting force measuring module, an edge calculating module, a data transmission module and a data receiving terminal; the axial force measuring module is fixed on a measuring point set between the pole holding standard knots and connected with the edge calculating module; the lifting force measuring module is arranged at the lifting end of the derrick arm of the derrick and is communicated with the edge calculating module through the data transmission module; the edge calculation module is installed on the pole holding standard knot and is communicated with the data receiving terminal through the data transmission module. The utility model discloses can be in real time accurate feedback embrace the real stress condition of pole, the pole safety precaution is embraced in carrying on that simultaneously can be accurate, has reduced and has embraced the pole and take place the probability of conquassation unstability in hoist and mount heavy object operating mode, has improved and has embraced the pole and establish the security and the reliability of whole construction at the shaft tower assemblage.
Description
Technical Field
The utility model relates to an embrace pole axial force monitoring devices, concretely relates to pole axial pressure monitoring devices is embraced to stand alone type.
Background
In order to promote the optimization and adjustment of the energy structure and solve the problem of reverse distribution of energy consumption and energy distribution, the construction of a power grid is rapidly developed. The tower assembly is an important construction link for power grid construction, and has high manpower and material resource investment cost, long construction period and high danger. The holding pole is one of important tower construction equipment for extra-high voltage and various voltage levels of a power grid, the size of the pole tower is remarkably increased along with the improvement of the voltage level of a power transmission line, and the complexity and the one-time hoisting weight of a tower material are increased more and more. If the hoisting weight of the tower material exceeds the specified axial pressure of the holding pole, the holding pole is subjected to accidents of collapse, instability and the like, and immeasurable economic loss is caused. Because the axial pressure of the holding pole in the working process is uncertain, the device for monitoring the axial pressure of the holding pole in the prior art is difficult to accurately measure the axial force of the holding pole, so that the early warning of the axial force is inaccurate, and the real stress state of the holding pole structure cannot be reflected.
SUMMERY OF THE UTILITY MODEL
Embrace pole axial force monitoring devices to existence among the prior art under the operating mode of hoist and mount heavy object, be difficult to the problem of true stress state and excessive pressure early warning of accurate measurement armful pole, the utility model provides a pole axial pressure monitoring devices is embraced to stand alone type, include: the device comprises an axial force measuring module 1, a lifting force measuring module 2, an edge calculating module 3, a data transmission module 4 and a data receiving terminal 5;
the axial force measuring module 1 is fixed on a measuring point set between two adjacent derrick standard knots 6 and is connected with the edge calculating module 3 through a data transmission line 7;
the lifting force measuring module 2 is arranged at the lifting end of a boom of a derrick and is communicated with the edge calculating module 3 through the data transmission module 4;
the edge calculation module 3 is installed on the pole holding standard knot 6 and is communicated with the data receiving terminal 5 through the data transmission module 4.
Preferably, the edge calculation module 3 includes: the axial force measuring device comprises a data transmission port, an axial force actual value calculating unit, an axial force theoretical value calculating unit and a wireless communication unit 4 which are connected with each other;
the data transmission port is connected with the axial force measuring module through a data transmission line 7;
the wireless communication unit performs data communication with the data receiving terminal 5 through the data transmission module 4.
Preferably, the data receiving terminal 5 includes: the system comprises a wireless receiving unit, a data processor and an alarm;
the wireless receiving unit is in data communication with the edge calculating module 3 through the data transmission module 4.
Preferably, the axial force measuring module 1 includes: an axial force sensor.
Preferably, the axial force sensor includes: the connecting board 111, the induction ring 112, the data output port 113 and the power supply 114 are connected with each other;
the connecting plate 111 is fixedly connected with the holding pole standard knot 6 through a mounting bolt;
the data output port 113 is connected with the edge calculation module 3 through a data transmission line 7.
Preferably, the connecting plate 111 is provided with an L-shaped groove.
Preferably, the lifting force measuring module 2 includes: the wireless sensor comprises a strain sensor, an amplifier, an AD conversion unit, a processing unit, a wireless transmitting unit, a dormancy unit and a power supply;
the wireless transmitting unit is in data communication with the edge calculating module 3 through the data transmission module 4.
Compared with the prior art, the beneficial effects of the utility model are that:
the device comprises an axial force measuring module 1, a lifting force measuring module 2, an edge calculating module 3, a data transmission module 4 and a data receiving terminal 5; the axial force measuring module 1 is fixed on a measuring point set between two adjacent derrick standard knots 6 and is connected with the edge calculating module 3 through a data transmission line 7; the lifting force measuring module 2 is arranged at the lifting end of the derrick boom and is communicated with the edge calculating module 3 through the data transmission module 4; the edge calculation module 3 is installed on the pole holding standard knot 6 and is communicated with the data receiving terminal 5 through the data transmission module 4. The utility model discloses can be in real time accurate feedback embrace the real stress condition of pole, the pole safety precaution is embraced in carrying on that simultaneously can be accurate, has reduced and has embraced the pole and take place the probability of conquassation unstability in hoist and mount heavy object operating mode, has improved and has embraced the pole and establish the security and the reliability of whole construction at the shaft tower assemblage.
Drawings
FIG. 1 is a structural diagram of an independent holding pole axial pressure monitoring device of the present invention;
FIG. 2 is a schematic view of the overall structure of the holding pole of the present invention;
FIG. 3 is a structural diagram of the axial force sensor of the present invention;
fig. 4 is a schematic view of the overall structure of the middle lifting force measuring module of the present invention.
Detailed Description
Example 1:
embrace pole axial force monitoring devices to existence among the prior art under the operating mode of hoist and mount heavy object, be difficult to the problem of true stress state and excessive pressure early warning of accurate measurement armful pole, the utility model provides a pole axial pressure monitoring devices is embraced to stand alone type, as shown in FIG. 1, include: the device comprises an axial force measuring module 1, a lifting force measuring module 2, an edge calculating module 3, a data transmission module 4 and a data receiving terminal 5;
the axial force measuring module 1 is fixed on a measuring point set between two adjacent derrick standard knots 6, is used for measuring the actual axial force value of each set measuring point on the derrick standard knot, and transmits 4 the actual axial force value to the edge calculating module 3 through a data transmission line;
the lifting force measuring module 2 is arranged at the lifting end of the derrick boom, is used for measuring the lifting force of the lifting end of the derrick boom and transmits the lifting force to the edge calculating module 3 through the data transmission module 4;
the edge calculation module 3 is installed on the pole holding standard knot 6 and is used for calculating a pole holding axial force theoretical value and a pole holding axial force actual value according to the lifting force and the axial force actual value of each set measuring point respectively and sending the pole holding axial force theoretical value and the pole holding axial force actual value to the data receiving terminal 5 through the data transmission module 4;
the data receiving terminal 5 is used for determining the safety state of the holding pole according to the theoretical value of the axial force of the holding pole and the actual value of the axial force of the holding pole.
Axial force measuring module 1, comprising: the number of the axial force sensors is the same as that of the axial force measuring points;
in this embodiment, the position of the measuring point is set between two pole standard knot components of the central standard knot of the whole pole, and the whole structure of the pole is as shown in fig. 2;
the axial force sensor, as shown in fig. 3, includes: an induction ring 111, a connecting plate 112, a data output port 113 and a power supply 114;
the induction ring 111 is used for measuring the actual value of the axial force of each measuring point on the pole holding standard knot 6;
the connecting plate 112 is provided with an L-shaped groove for passing through a mounting bolt for fixing the pole standard knot 6, so that the mounting of poles with bolt holes at different distances can be met, and the universality is high;
the data output port 113 is used for transmitting the actual value of the axial force measured by the induction ring 111 to the edge calculation module 3 through the data transmission line 7;
the power supply 114 is used for supplying power to the inductive loop 111 and the data output interface 113.
The lifting force measuring module 2, as shown in fig. 4, includes: the wireless sensor comprises a strain sensor, an amplifier, an AD conversion unit, a processing unit, a wireless transmitting unit, a dormancy unit and a power supply which are connected with each other;
the strain sensor is used for measuring the lifting force born by the lifting end of the holding pole when lifting goods and transmitting the lifting force to the amplifier;
the amplifier is used for amplifying the lifting force data and transmitting the signals to the AD conversion unit;
the AD conversion unit is used for converting the analog signal of the lifting force data into a digital signal and transmitting the digital signal to the processing module;
the processing unit is used for converting the digital signal into data which can be processed by the edge calculation module and transmitting the data to the wireless transmitting unit;
the wireless transmitting unit is used for transmitting lifting force data which can be processed by the edge calculating module to the edge calculating module 3;
the dormancy unit is used for monitoring the working state of the strain sensor, and if the strain sensor does not work within a set time period, the strain sensor, the amplifier, the AD conversion unit, the processing unit and the transmitting unit are dormant;
the power supply is used for supplying power to the strain sensor, the amplifier, the AD conversion unit, the processing unit, the wireless transmitting unit and the dormancy unit.
An edge calculation module 3, comprising: the device comprises a data transmission port, an axial force actual value calculating unit, an axial force theoretical value calculating unit and a wireless communication unit;
the data transmission port is connected with the axial force measuring module 1 through a data transmission line 7 and is used for receiving the actual axial force value of each set measuring point measured by the induction ring 111 in the axial force measuring module 1;
the axial force actual value calculating unit is used for calculating an axial force actual value of the holding pole by utilizing the holding pole axial force actual value calculation formula based on the axial force actual value of each set measuring point and transmitting the axial force actual value to the wireless communication unit;
the axial force theoretical value calculating unit is used for calculating an axial force theoretical value of the holding pole by using a holding pole axial force calculation formula based on the lifting force of the lifting end of the holding pole lifting arm and transmitting the axial force theoretical value to the wireless transmitting unit;
the axial force calculation formula is shown as follows:
in the formula, N is the theoretical value of the axial force of the holding pole, gamma is the included angle of the resultant force of the pulling line of the holding pole to the ground, beta is the included angle between the axis of the hoisting tackle pulley set and the vertical line, omega is the included angle of the control line to the ground, delta is the included angle between the axis of the holding pole and the vertical line, G is the gravity of the hung component, T is the weight of the hung component 0 Is the static tension of the hauling cable;
static tension T of hauling rope 0 Calculated as follows:
in the formula, T is the resultant force of the lifting rope, n is the working rope number of the steel wire rope of the hoisting tackle group, and eta is the tackle efficiency.
The actual axial force value of the holding pole is calculated according to the following formula:
in the formula, L is an actual axial force value of the holding pole, h is an actual axial force value of the measuring points, and m is the number of the measuring points.
The wireless transmitting unit is used for transmitting the theoretical value of the axial force of the holding pole and the actual value of the axial force of the holding pole to the data receiving terminal 5.
The data receiving terminal 5 includes: the system comprises a wireless receiving unit, a data processor and an alarm;
the wireless receiving unit is used for receiving the actual value of the axial force of the holding pole and the theoretical value of the axial force of the holding pole and transmitting the received actual value of the axial force of the holding pole and the theoretical value of the axial force of the holding pole to the data processor;
the data processor is used for calculating a difference value between an actual value and a theoretical value of the axial force, comparing the actual value with the theoretical value by using a set early warning threshold value, if the difference value is greater than the set early warning threshold value, sending an alarm signal to the alarm, and if the difference value is not greater than the set early warning threshold value, confirming that the holding pole is in a safe state and continuing monitoring;
and the alarm is used for carrying out early warning on the axial force of the holding pole according to the alarm signal of the data processor.
The utility model provides an independent axial pressure monitoring device which is suitable for monitoring the axial pressure of holding poles with various specifications and has certain universality; meanwhile, the independent axial pressure monitoring device provided by the utility model is firmly connected with the holding rod, and has high safety, stable performance and good economical efficiency; the utility model can wirelessly monitor and early warn the axial pressure and the lifting capacity of the holding pole in the construction process of the tower in real time, reduce the safety risk of using the holding pole and improve the reliability of construction safety; the utility model discloses can also be after dismantling used repeatedly, reduce use cost.
Example 2:
to the problem that exists among the prior art, the utility model discloses can also monitor embracing the pole according to following method, include:
and 4, determining the safety state of the holding pole by using the data receiving terminal 5 based on the theoretical value of the axial force of the holding pole and the actual value of the axial force of the holding pole.
In step 1, after the axial force monitoring module 1 fixed between two adjacent pole standard sections 6 is used for measuring the actual value of the axial force of each set measuring point on the pole standard sections 6, the actual value is transmitted to the edge calculating module 3 through the data transmission line 7, and the method comprises the following steps:
measuring the actual value of the axial force of each measuring point on the pole standard knot 6 by using an induction ring 111 of an axial force sensor in the axial force monitoring module 1; the position of the measuring point is arranged between two adjacent pole holding standard knots 6 of the middle standard knot of the whole pole holding pole;
the mounting bolt for fixing the pole standard knot 6 penetrates through an L-shaped groove on a connecting plate 112 of an axial force sensor in the axial force measuring module 1; the L-shaped grooves in the axial sensor connecting plate 112 can meet the requirement of mounting holding rods with bolt holes at different distances, and the universality is high;
the data output port 113 of the axial force sensor in the axial force measuring module 1 is used for transmitting the actual value of the axial force measured by the induction ring 111 to the edge calculating module 3 through the data transmission line 7;
the inductive loop 111 and the data output interface 113 are supplied with power by a power supply 114 in the axial force sensor.
In step 2, the lifting force of the lifting end of the derrick boom is measured by the lifting force measuring module 2 installed at the lifting end of the derrick boom, and the lifting force is transmitted to the edge calculating module 3 through the data transmission module 4, which includes:
the lifting force born by the lifting end of the derrick when lifting the goods is measured by utilizing a strain sensor in the lifting force measuring module 2 and is transmitted to an amplifier;
the lifting force data is amplified by an amplifier in the lifting force measuring module 2 and then transmitted to an AD conversion unit;
the analog signal of the lifting force data is converted into a digital signal by an AD conversion unit in the lifting force measuring module 2 and then transmitted to a processing unit;
converting the digital signal into data which can be processed by an edge calculation module through a processing unit in the lifting force measurement module and transmitting the data to a wireless transmitting unit;
the wireless transmitting unit in the lifting force measuring module 2 is used for transmitting lifting force data which can be processed by the edge calculating module to the edge calculating module 3;
monitoring the working state of the hoisting force measuring module 2 through a dormancy unit in the hoisting force measuring module 2, and if the hoisting force measuring module 2 does not work in a set time period, sleeping the hoisting force measuring module 2;
and a power supply in the lifting force measuring module 2 is used for supplying power to the strain sensor, the amplifier, the AD conversion unit, the processing unit, the wireless transmitting unit and the dormancy unit.
In step 3, based on the lifting force and the actual value of the axial force of each set measuring point, the theoretical value of the axial force of the holding pole and the actual value of the axial force of the holding pole are calculated by the edge calculating module 3 installed on the holding pole standard knot 6, and the theoretical value of the axial force of the holding pole and the actual value of the axial force of the holding pole are transmitted to the data receiving terminal 5 through the data transmission module 4, which comprises the following steps:
based on the axial force actual value of each measuring point measured by the axial force measuring module, the edge calculating module 3 is utilized to call the pole axial force actual value calculation formula to calculate and obtain the pole axial force actual value;
based on the lifting force of the lifting end of the boom of the derrick, the edge calculation module 3 is utilized to call a derrick axial force calculation formula to calculate and obtain a theoretical value of derrick axial force;
wherein, the axial force calculation formula is shown as the following formula:
in the formula, N is the theoretical value of the axial force of the holding pole, gamma is the included angle of the resultant force of the pulling line of the holding pole to the ground, beta is the included angle between the axis of the hoisting tackle pulley set and the vertical line, omega is the included angle of the control line to the ground, delta is the included angle between the axis of the holding pole and the vertical line, G is the gravity of the hung component, T is the weight of the hung component 0 Is the static tension of the hauling cable;
static tension T of hauling rope 0 Calculated as follows:
in the formula, T is the resultant force of the lifting rope, n is the working rope number of the steel wire rope of the hoisting tackle group, and eta is the tackle efficiency.
The actual axial force value of the holding pole is calculated according to the following formula:
in the formula, L is the actual axial force value of the holding pole, h is the actual axial force value of the measuring points, and m is the number of the measuring points.
In step 4, based on the theoretical value of the axial force of the pole and the actual value of the axial force of the pole, the data receiving terminal 5 is used for determining the safety state of the pole, which includes:
receiving the actual value of the axial force of the holding pole and the theoretical value of the axial force of the holding pole by using a wireless receiving unit in a data receiving terminal 5 and transmitting the received actual value of the axial force of the holding pole and the theoretical value of the axial force of the holding pole to a data processor;
calculating a difference value between an actual value and a theoretical value of the axial force by a data processor in the data receiving terminal 5, comparing the difference value with a set early warning threshold value, if the difference value is greater than the set early warning threshold value, sending an alarm signal to an alarm, otherwise, confirming that the holding pole is in a safe state and continuing monitoring;
and according to the alarm signal of the data processor, carrying out early warning on the axial force of the holding pole by using an alarm in the data receiving terminal.
The utility model discloses an early warning threshold value can also be based on the different models of different manufacturers and embrace the type test data of pole as early warning control threshold value reference value, and the axial pressure value that obtains is calculated through the actual elevating capacity of measuring every hoist and mount operating mode simultaneously as early warning control threshold value, through carrying out comparative analysis with real measured value and early warning control threshold value, really makes the early warning from axial pressure, and the early warning is judged accurately.
For the security that improves the pole of embracing in iron tower assemblage work progress, avoid utilizing because of embracing the too big structural failure risk that produces of pole axial pressure, combine to provide the method in this embodiment and utilize the utility model discloses carry out real-time supervision to the pole of embracing, simultaneously the utility model discloses still have wireless transmission function, can carry out real-time supervision to axial pressure and the lifting power of pole standard festival main material position in the course of the work, calculate axial force actual value and the axial force that obtains the pole of embracing through edge calculation module and transmit data receiving terminal, rethread data receiving terminal carries out contrastive analysis with difference and early warning threshold value between pole axial force theoretical value and the actual value, accurately judges pole safe state of embracing, realizes real-time supervision and early warning from pole axial pressure, has improved the security of pole of embracing work, carries out important meaning smoothly to the pole of embracing group tower construction. Additionally, through the utility model discloses a monitoring data of embracing pole axial pressure that monitoring was acquireed in real time provides the guide effect to the optimal design and the experimental study of embracing the pole.
The above description is only exemplary of the invention and is not intended to limit the invention, and any modifications, equivalent alterations, improvements and the like which are made within the spirit and principle of the invention are all included in the scope of the claims which are appended hereto.
Claims (7)
1. The utility model provides a pole axial pressure monitoring devices is embraced to stand alone type which characterized in that includes: the device comprises an axial force measuring module (1), a lifting force measuring module (2), an edge calculating module (3), a data transmission module (4) and a data receiving terminal (5);
the axial force measuring module (1) is fixed on a measuring point set between two adjacent derrick standard sections (6) and is connected with the edge calculating module (3) through a data transmission line (7);
the lifting force measuring module (2) is arranged at the lifting end of the boom of the derrick and is communicated with the edge calculating module (3) through the data transmission module (4);
the edge calculation module (3) is installed on the pole holding standard knot (6) and is communicated with the data receiving terminal (5) through the data transmission module (4).
2. The apparatus according to claim 1, characterized in that said edge calculation module (3) comprises: the axial force measuring device comprises a data transmission port, an axial force actual value calculating unit, an axial force theoretical value calculating unit and a wireless communication unit which are connected with each other;
the data transmission port is connected with the axial force measuring module through a data transmission line (7);
and the wireless communication unit is in data communication with the data receiving terminal (5) through the data transmission module (4).
3. The device according to claim 1, wherein the data receiving terminal (5) comprises: the system comprises a wireless receiving unit, a data processor and an alarm;
and the wireless receiving unit is in data communication with the edge calculation module (3) through the data transmission module (4).
4. The device according to claim 1, characterized in that the axial force measuring module (1) comprises: an axial force sensor.
5. The apparatus of claim 4, wherein the axial force sensor comprises: the device comprises a connecting plate (111), an induction ring (112), a data output port (113) and a power supply (114), wherein the induction ring, the data output port and the power supply are connected with each other;
the connecting plate (111) is fixedly connected with the holding pole standard knot (6) through a mounting bolt;
the data output port (113) is connected with the edge calculation module (3) through a data transmission line (7).
6. Device according to claim 5, characterized in that the connecting plate (111) is provided with an L-shaped slot.
7. Device according to claim 1, characterized in that the hoisting force measuring module (2) comprises: the wireless sensor comprises a strain sensor, an amplifier, an AD conversion unit, a processing unit, a wireless transmitting unit, a dormancy unit and a power supply;
and the wireless transmitting unit is in data communication with the edge computing module (3) through the data transmission module (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122833710.0U CN217542201U (en) | 2021-11-18 | 2021-11-18 | Pole axial pressure monitoring devices is embraced to stand alone type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122833710.0U CN217542201U (en) | 2021-11-18 | 2021-11-18 | Pole axial pressure monitoring devices is embraced to stand alone type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217542201U true CN217542201U (en) | 2022-10-04 |
Family
ID=83417356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122833710.0U Active CN217542201U (en) | 2021-11-18 | 2021-11-18 | Pole axial pressure monitoring devices is embraced to stand alone type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217542201U (en) |
-
2021
- 2021-11-18 CN CN202122833710.0U patent/CN217542201U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103538989B (en) | Multi-rope winder steel wire rope tension equilibrium displacement adjustment state monitoring method and device | |
| CN210774457U (en) | Real-time monitoring device for cable force variation of arch bridge suspender | |
| CN112461288B (en) | Holding pole working state monitoring device and monitoring method thereof | |
| CN109799022A (en) | A kind of pull force calculation system and method for steel tower construction pole anchor stay | |
| CN207866409U (en) | A kind of system of measuring steel wire rope tension real-time during lifting | |
| CN202201639U (en) | Crane and device for measuring craning weight of same | |
| CN217542201U (en) | Pole axial pressure monitoring devices is embraced to stand alone type | |
| CN109592579A (en) | A kind of discharging platform monitoring method | |
| CN208814531U (en) | A kind of tower crane operational monitoring auxiliary system | |
| CN203204439U (en) | Wireless monitoring device for safety of tower erection | |
| CN208631859U (en) | More rope race skip-cage steel cable tension testers | |
| CN111697490A (en) | Electric power iron tower wiring device based on Internet of things equipment and use method | |
| CN114216596A (en) | Independent holding pole axial pressure monitoring device and method | |
| CN2297430Y (en) | Crane electronic hook with load-measuring device | |
| CN217034909U (en) | Modular hold pole axial pressure early warning system | |
| CN114155689A (en) | Combined type holding rod axial pressure early warning system and control method | |
| CN113483933A (en) | Tensiometer system and steel wire rope tension measuring method | |
| CN102081000A (en) | On-line detection device for shaft-sinking suspension steel wire rope | |
| CN203545396U (en) | Multi-rope hoist steel wire rope tension balance displacement regulation state monitoring device | |
| CN220098272U (en) | Lifting appliance | |
| CN217264362U (en) | Intelligent monitoring system of holding pole group tower | |
| CN212462602U (en) | Electric power iron tower stringing device based on internet of things equipment | |
| CN219284357U (en) | Suspension pole on-line monitoring system | |
| CN212893539U (en) | Bridge crane energy consumption monitoring device based on wireless sensor network | |
| CN217542202U (en) | Embrace pole real-time stress wireless monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |