CN217358703U - Double-output weighing sensor - Google Patents
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- CN217358703U CN217358703U CN202220987139.XU CN202220987139U CN217358703U CN 217358703 U CN217358703 U CN 217358703U CN 202220987139 U CN202220987139 U CN 202220987139U CN 217358703 U CN217358703 U CN 217358703U
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Abstract
The utility model provides a double-output weighing sensor, which arranges a compensation sensor inside a main sensor; the main sensor collects the weight of the load body and sends the collected weight data of the current load body to the compensation unit; the compensation sensor collects the weight of the weight in the current state and sends the collected current weight data of the weight to the compensation unit; and the compensation unit compares the current weight data with the weight data in a static state, and compensates the current load body weight data according to a comparison result to obtain standard load body weight data. The utility model discloses in, through setting up the compensation sensor inside the main sensor to utilize the current weight data compensation current load body weight data that sets up the output of the inside compensation sensor of main sensor, thereby obtain accurate standard load body weight data.
Description
Technical Field
The utility model relates to the technical field of sensors, especially, relate to a dual output weighing sensor.
Background
In industrial situations, there are irregular or low frequency vibrations in weighing situations, such as docks, ships, etc., due to equipment vibration and environmental factors. The existing dynamic weighing sensor is not enough to filter low-frequency vibration signals, so that the difference between the measured reading of the sensor and the actual mass is larger. How to correct the output under the vibration condition, eliminate the influence of the vibration, correct the measured value is an effective solution.
Can use another sensor to carry out this card to the measured value in the occasion of weighing in current correction scheme, but above-mentioned scheme for compensation weighing device's scale pan and weight are arranged in outdoors, contact with the air, can receive environmental factor influence when using for a long time, for example because of rusty or material scatter factors such as scale pan, lead to the weight quality inaccurate, influence measurement accuracy.
The above description is only for assistance in understanding the technical solutions of the present invention, and does not represent an admission that the above description is prior art.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide a dual output weighing sensor aims at solving and receives the technical problem that environmental factor influences can't obtain accurate weighing data among the prior art.
In order to achieve the above object, the utility model provides a dual output weighing sensor, dual output weighing sensor includes: the dual output load cell includes: the device comprises a main sensor, a compensation sensor and a compensation unit;
the compensation sensor is arranged in the main sensor, and the main sensor and the compensation sensor are respectively connected with the compensation unit;
the main sensor is used for collecting the weight of the load body and sending the collected weight data of the current load body to the compensation unit;
the compensation sensor is used for collecting the weight of the weight in the current state and sending the collected current weight data of the weight to the compensation unit;
and the compensation unit is used for comparing the current weight data with the weight data in a static state, and compensating the current load weight data according to a comparison result to obtain standard load weight data.
Optionally, the primary sensor comprises: the sensor shell consists of a base, a sheath welding part and a top-layer diaphragm;
the sensor shell is internally provided with a main elastic body, and the main elastic body penetrates through a center hole of the top layer diaphragm and is arranged on the base.
Optionally, a number of main resistance strain gauges are further arranged in the sensor housing;
the main resistance strain gauge is arranged on a strain sensitive part of the main elastic body of the column type structure;
a certain number of the main resistance strain gauges form a main Wheatstone bridge;
the main Wheatstone bridge is connected with the compensation unit;
and the main Wheatstone bridge is used for collecting the weight of the load body and sending the collected weight data of the current load body to the compensation unit.
Optionally, a main analog-to-digital conversion unit is further arranged in the sensor housing;
the main analog-digital conversion unit is arranged on the main elastic body, and the main analog-digital conversion unit is respectively connected with the main Wheatstone bridge and the compensation unit;
the main analog-to-digital conversion unit is used for receiving the current load body weight data output by the main Wheatstone bridge and converting the current load body weight data into digital load body weight data;
the main analog-to-digital conversion unit is used for sending the digital load weight data to the compensation unit.
Optionally, the main analog-to-digital conversion unit includes: a main amplifier, a main analog-to-digital converter, a main microprocessor and a main memory;
the main amplifier is respectively connected with the main Wheatstone bridge and the main analog-to-digital converter, the main microprocessor is respectively connected with the main analog-to-digital converter and the main memory, and the main microprocessor is further connected with the compensation unit through a main interface.
Optionally, the compensation sensor comprises: a certain number of compensation resistance strain gauges, compensation elastic bodies of sheet structures and weights;
the compensation elastic body is arranged on the base, the weights are arranged at one end of the compensation elastic body, and the compensation resistance strain gauges are symmetrically adhered to the front surface and the back surface of the compensation elastic body;
the compensation resistance strain gauges form a compensation Wheatstone bridge;
wherein the compensation Wheatstone bridge is connected with the compensation unit;
and the compensation Wheatstone bridge is used for collecting the weight of the weight and sending the collected weight data of the current weight to the compensation unit.
Optionally, a compensation analog-to-digital conversion unit is further arranged in the sensor housing;
the compensation analog-to-digital conversion unit is arranged on the main elastic body and is respectively connected with the compensation Wheatstone bridge and the compensation unit;
the compensation analog-to-digital conversion unit is used for receiving the current weight data output by the compensation Wheatstone bridge and converting the current weight data into digital weight data;
and the compensation analog-to-digital conversion unit is used for sending the weight data of the digital weight to the compensation unit.
Optionally, the compensation analog-to-digital conversion unit includes: the compensation amplifier, the compensation analog-to-digital converter, the compensation microprocessor and the compensation memory are arranged in the circuit board;
the compensation amplifier is respectively connected with the compensation Wheatstone bridge and the compensation analog-to-digital converter, the compensation microprocessor is respectively connected with the compensation analog-to-digital converter and the compensation memory, and the compensation microprocessor is further connected with the compensation unit through a compensation interface.
Optionally, the dual output load cell further comprises: a dual-channel instrument;
wherein the two-channel instrument is connected with the compensation unit, and the compensation unit is disposed within the two-channel instrument.
Optionally, the dual output load cell further comprises: a main regulator and a compensation regulator;
the main voltage stabilizer is respectively connected with the main analog-digital conversion unit and a power supply in the dual-channel instrument, and the compensation voltage stabilizer is respectively connected with the compensation analog-digital conversion unit and the power supply in the dual-channel instrument;
the main voltage stabilizer is used for stabilizing the power supply voltage provided by the power supply and outputting the stabilized power supply voltage to the main analog-digital conversion unit;
and the compensation voltage stabilizer is used for stabilizing the power supply voltage provided by the power supply and outputting the stabilized power supply voltage to the compensation analog-to-digital conversion unit.
The utility model provides a double-output weighing sensor, which is characterized in that the compensation sensor is arranged inside the main sensor, and the main sensor and the compensation sensor are respectively connected with the compensation unit; the main sensor collects the weight of the load body and sends the collected weight data of the current load body to the compensation unit; the compensation sensor collects the weight of the weight in the current state and sends the collected current weight data of the weight to the compensation unit; and the compensation unit compares the current weight data with the weight data of the weights in the static state, and compensates the current load weight data according to the comparison result to obtain the standard load weight data. The utility model discloses in, through setting up the compensation sensor inside the main sensor to utilize the current weight data compensation current load body weight data that sets up the output of the inside compensation sensor of main sensor, thereby obtain accurate standard load body weight data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first embodiment of a dual-output weighing sensor provided by the present invention;
fig. 2 is a schematic diagram of a hardware structure of a second embodiment of the dual-output weighing sensor provided by the present invention;
fig. 3 is a schematic diagram of a hardware structure of a compensation sensor in the dual-output weighing sensor provided by the present invention;
fig. 4 is a top view of a straight-plate thin sheet structure of a compensation sensor in a dual-output weighing sensor provided by the present invention;
fig. 5 is a top view of an annular thin sheet structure of a compensation sensor in a dual-output weighing sensor according to the present invention;
fig. 6 is an electrical schematic diagram of the dual-output weighing sensor of the present invention.
The reference numbers indicate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of the dual-output weighing sensor provided by the present invention. Put forward based on fig. 1 the utility model discloses dual output weighing sensor first embodiment.
In this embodiment, the dual output load cell includes: a main sensor 1, a compensation sensor 2 and a compensation unit 3;
the compensation sensor 2 is arranged inside the main sensor 1, and the main sensor 1 and the compensation sensor 2 are respectively connected with the compensation unit 3.
It should be understood that the load cell is a very convenient sensor by which the weight of the load body can be directly acquired. However, in some special cases, the weight data collected by the sensor is not accurate, for example, when weighing a load on a ship, the ship body cannot be stabilized due to water flow, and at this time, the weight data obtained by weighing the load is not accurate. In addition, the standard weight data can be obtained in a short time by providing one compensation sensor 2 in the same environment to compensate the collected weight data, however, since the compensation sensor 2 is usually directly provided in the measurement environment, the standard weight object measured by the compensation sensor 2 is affected by the environment, which causes the weight of the object to change, such as rusting or material scattering on the standard weight object, or the standard weight object to have a chemical reaction, etc., at this time, the weight data of the standard weight object measured by the compensation sensor 2 is not accurate, and thus the load weight data cannot be accurately compensated.
The main sensor 1 is a sensor for collecting weight data of the load body. The compensation sensor 2 is a sensor for measuring the weight that a standard-weight object presents in the current state. Standard weight objects in a particular situation, the weight data obtained by weighing is not the same as the standard weight data for the object. For example, in the case of weight measurement on a weighing scale, the weight data measured by a person standing on the weighing scale in a static state is completely different from the weight data measured by a person who is standing up while crouching down. The compensation unit 3 is a unit for compensating the weight data of the load body collected in the current environmental state. The weight data of the load body obtained after compensation by the compensation unit 3 is standard weight data of the load body.
In specific implementation, the main sensor 1 may collect the weight of the load body in the current state, and send the collected weight data of the current load body to the compensation unit 3; the compensation sensor 2 can collect the weight of the weight in the current state and send the collected current weight data of the weight to the compensation unit 3; and the compensation unit 3 compares the current weight data with the weight data in a static state, and compensates the current load body weight data according to a comparison result to obtain standard load body weight data. For example, the compensating unit 3 may determine a difference between the weight data of the weights collected in the static state and the current state through an internal operation, determine a compensation ratio of the current load weight data collected in the current state through a divider between the difference and the current weight data of the weights, and compensate the current load weight data through an amplifier according to the adjustment ratio to obtain the standard load weight data.
The current load weight data is the load weight acquired by the main sensor 1 in the current environmental state. The current weight data is the weight of the weight collected by the compensation sensor 2 in the current environmental state. The standard load body weight data is the actual weight of the load body, i.e., the weight data of the load body in the standard state.
In this embodiment, the dual-output weighing sensor is configured such that the compensation sensor is disposed inside the main sensor, and the main sensor and the compensation sensor are respectively connected to the compensation unit; the main sensor collects the weight of the load body and sends the collected weight data of the current load body to the compensation unit; the compensation sensor collects the weight of the weight in the current state and sends the collected current weight data of the weight to the compensation unit; and the compensation unit compares the current weight data with the weight data in a static state, and compensates the current load body weight data according to a comparison result to obtain standard load body weight data. In this embodiment, the compensation sensor is disposed inside the main sensor, and the current load body weight data is compensated using the current weight data output from the compensation sensor disposed inside the main sensor, thereby obtaining accurate standard load body weight data.
Referring to fig. 2, fig. 2 is a schematic diagram of a hardware structure of a second embodiment of the dual-output weighing sensor provided by the present invention. The first embodiment based on above-mentioned dual output weighing sensor provides the utility model discloses dual output weighing sensor's second embodiment.
In the present embodiment, the main sensor 1 includes: a sensor shell consisting of a base 12, a sheath welding piece 13 and a top membrane 14;
a main elastic body 11 is arranged in the sensor shell, and the main elastic body 11 penetrates through a central hole of the top layer diaphragm 14 and is arranged on the base 12.
It should be noted that the sensor housing composed of the base 12, the sheath weldment 13 and the top membrane 14 can seal the relevant components disposed inside the housing. External environmental factors do not affect the environmental state within the housing. The weight arranged in the shell is not influenced by the external environment to cause the weight change. The main elastic body 11 may be used to measure weight data of the load body, and the main elastic body 11 may be elastically deformed according to the weight of the load body prevented at the upper end thereof, the elastic deformation being related according to the weight of the load body. The top membrane 14 is centrally provided with a central hole of a size slightly larger than the diameter of the protruding portion of the main elastic body 11, so as to seal the environment as much as possible without affecting the deformation of the protruding portion of the main elastic body 11. The sensor housing may have a cylindrical structure or a cubic structure, and is not limited herein.
In the present embodiment, a number of main resistive strain gauges 16 are also provided in the sensor housing;
the main resistance strain gauge 16 is arranged on the strain sensitive part of the main elastic body 11 of the column structure; a certain number of the main resistance strain gauges form a main Wheatstone bridge; the main Wheatstone bridge is connected with the compensation unit.
It should be understood that a resistive strain gauge is a transducer that converts dimensional changes on an engineered component into a change in resistance. In this embodiment, the resistance strain gauge may convert the deformation size of the elastic body into a resistance change. The main resistance strain gauge 16 is a resistance strain gauge for converting the deformation dimension of the main elastic body 11 into a change in resistance value. The main resistance strain gauges 16 with a certain number can form a Wheatstone bridge, when a load body is weighed, the load body can extrude the main elastic body 11, the deformation generated by the main elastic body 11 can directly cause the resistance value of the main resistance strain gauges 16 on the Wheatstone bridge to change, and therefore the weight data of the load body can be determined according to the output result of the main resistance strain gauges.
In this embodiment, the main elastic body 11 may have a pillar structure, and the strain sensitive portion is present on the main elastic body 11. When a load body is present on the main elastic body 11, the size of the strain sensitive portion changes directly according to the weight of the load body. Of course, the main elastic body 11 also has a non-strain sensitive portion, which is not generally changed.
In specific implementation, the weight of the load body can be directly acquired through the main wheatstone bridge, and the acquired current load body weight data is sent to the compensation unit 3 for compensation to obtain standard load body weight data.
In this embodiment, a main analog-to-digital conversion unit 4 is further disposed in the sensor housing;
the main analog-to-digital conversion unit 4 is disposed on the main elastic body 11, and the main analog-to-digital conversion unit 4 is connected to the main wheatstone bridge and the compensation unit 3, respectively.
It should be understood that in the actual weighing process, the collected weight data is usually sent directly in analog form. The weight data displayed by the weight display device is inaccurate due to the fact that the weight display device is easily interfered in the process of transmitting the analog signals. In order to reduce interference in the data transmission process, in this embodiment, the analog-to-digital conversion unit may convert the acquired analog data into digital data, and then transmit the digital data, so that interference in the data transmission process can be effectively reduced. The main analog-to-digital conversion unit 4 is a unit for performing analog-to-digital conversion on the acquired weight data of the load body.
In specific implementation, the main wheatstone bridge may send the acquired current load body weight data to the main analog-to-digital conversion unit 4, and the main analog-to-digital conversion unit 4 converts the current load body weight data into digital load body weight data when receiving the current load body weight data; the digital load body weight data is then sent to the compensation unit 3 for compensation.
Referring to fig. 6, in this embodiment, the main analog-to-digital conversion unit 4 specifically includes: a main amplifier 41, a main analog-to-digital converter 42, a main microprocessor 43, and a main memory 44;
the main amplifier 41 is connected to the main wheatstone bridge and the main analog-to-digital converter 42, the main microprocessor 13 is connected to the main analog-to-digital converter 42 and the main memory 44, and the main microprocessor 43 is further connected to the compensation unit 3 through a main interface 45.
It should be understood that, when analog-to-digital converting the analog signal, the analog signal may be amplified first, and then the amplified analog signal may be analog-to-digital converted to obtain a digital signal. In the present embodiment, the microprocessor is a unit for controlling data storage and data transmission. In order to prevent the collected data from being lost, a memory can be arranged to store the collected weight data of the load body. The main amplifier 41, the main analog-to-digital converter 42, the main microprocessor 43, and the main memory 44 are units for processing, storing, or transmitting the current load body weight data.
In a specific implementation, in a current state, the current load weight data collected by the main sensor 1 may be amplified by the main amplifier 41, and then subjected to analog-to-digital conversion by the main analog-to-digital converter 42 to obtain digital load weight data. Upon receiving the digital load weight data, the main microprocessor 43 may transmit the digital load weight data to the main memory 45 for storage. The main microprocessor 43 can also transmit the load mass weight data in digital form to the compensation unit 3 via a main interface 45 for data transmission.
Referring to fig. 3 to 5, in the present embodiment, the compensation sensor 2 includes: a number of compensation resistance strain gauges 23, a compensation elastic body 22 of a sheet structure, and weights 21;
the compensation elastic body 22 is arranged on the base 12, the weight 21 is arranged at one end of the compensation elastic body 22, and the compensation resistance strain gauges 23 are symmetrically adhered to the front surface and the back surface of the compensation elastic body;
the certain number of compensation resistance strain gauges 23 form a compensation Wheatstone bridge;
wherein the compensation Wheatstone bridge is connected with the compensation unit 3;
it should be understood that a certain number of compensation resistance strain gauges 23 may form a compensation wheatstone bridge, when the weight is weighed, the weight may squeeze the compensation elastic body 21, and the deformation generated by the compensation elastic body 21 may directly cause the resistance value of the compensation resistance strain gauge 23 on the compensation wheatstone bridge to change, so as to determine the weight data in the current state according to the output result of the compensation wheatstone bridge.
The compensation elastic body 23 of the sheet structure may be a straight sheet structure or a circular sheet structure. Also on this compensation elastomer 23 there are strain sensitive and non-strain sensitive parts. The specific structure of the compensation elastic body 22 of the sheet structure is not limited in the present embodiment. The weight may be a columnar structure disposed at one end of the compensation elastic body 23.
In specific implementation, the weight of the weight can be directly collected through the compensation wheatstone bridge 23, and the collected current weight data of the weight is sent to the compensation unit 3, so that the compensation unit 3 adjusts the current load weight data according to the current weight data of the weight and the weight in a static state.
In this embodiment, a compensation analog-to-digital conversion unit 5 is further disposed in the sensor housing;
the compensation analog-to-digital conversion unit 5 is disposed on the main elastic body 11, and the compensation analog-to-digital conversion unit 5 is connected to the compensation wheatstone bridge and the compensation unit 3, respectively.
In this embodiment, the compensation analog-to-digital conversion unit 5 is a unit for performing analog-to-digital conversion on the weight data of the collected weight in the current state. In a specific implementation, the compensation analog-to-digital conversion unit 5 may receive current weight data output by the compensation wheatstone bridge, convert the current weight data into digital weight data, and finally send the digital weight data to the compensation unit 3.
In this embodiment, the compensation analog-to-digital conversion unit 5 includes: a compensation amplifier 51, a compensation analog-to-digital converter 52, a compensation microprocessor 53 and a compensation memory 54;
the compensation amplifier 51 is connected to the compensation wheatstone bridge and the compensation analog-to-digital converter 52, the compensation microprocessor 53 is connected to the compensation analog-to-digital converter 52 and the compensation memory 54, and the compensation microprocessor 53 is further connected to the compensation unit through a compensation interface 55.
The compensation amplifier 51, the compensation analog-to-digital converter 52, the compensation microprocessor 53 and the compensation memory 54 are units for processing, storing or transmitting the weight data of the current weight.
In a specific implementation, in a current state, the current weight data collected by the compensation sensor 2 may be amplified by the compensation amplifier 51, and then subjected to analog-to-digital conversion by the compensation analog-to-digital converter 52 to obtain digital weight data. When receiving the digital weight data, the compensation microprocessor 53 may send the digital weight data to the compensation memory 55 for storage. The compensation microprocessor 53 can also transmit the digital form of the negative weight data to the compensation unit 3 via a data-transmitting compensation interface 55.
In this embodiment, the dual output load cell further includes: a dual-channel instrument 8;
wherein the two-channel meter 8 is connected with the compensation unit 3 and the compensation unit 3 is arranged within the two-channel meter 8.
It should be noted that the meter is a unit for displaying the collected weight data. In this embodiment, the compensation unit 3 in the dual-channel meter 8 can receive the current load weight data sent by the main sensor 1, and can also receive the current weight data sent by the compensation sensor 2. The compensation unit 3 can simultaneously send the current weight data of the weight of the standard load after compensation to the dual-channel instrument 8 for displaying.
In this embodiment, the dual output load cell further includes: a main regulator 6 and a compensation regulator 7;
the main regulator 6 is connected to the main adc unit 4 and the power supply in the dual-channel instrument 8, and the compensation regulator 7 is connected to the compensation adc unit 5 and the power supply in the dual-channel instrument 8.
It should be understood that, since the power source needs to be placed in a certain size, in this embodiment, the power source may be directly disposed in the dual-channel meter 8, and then electrically connected with the analog-to-digital conversion unit through the dual-channel meter 8 to supply power to the analog-to-digital conversion unit. The voltage stabilizer is a device for stabilizing the power voltage output by the power supply, and can avoid inaccurate weight data collected due to power voltage fluctuation.
In this embodiment, the main regulator 6 may regulate the power voltage provided by the power supply, and output the regulated power voltage to the main analog-to-digital conversion unit 4 to supply power to the main analog-to-digital conversion unit 4; the compensation voltage stabilizer 8 may stabilize the power voltage provided by the power supply, and output the stabilized power voltage to the compensation analog-to-digital conversion unit 5 to supply power to the compensation analog-to-digital conversion unit 5. Of course, the power supply in this embodiment can also supply power to the main sensor 1 and the compensation sensor 2.
In the embodiment, the compensation sensor is arranged in the main sensor to avoid the influence caused by the inaccuracy of the compensation sensor, and the weight data is transmitted through the analog-to-digital conversion module through the formation of the digital signal, so that the accuracy of obtaining the weight data can be further improved.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the present invention, or directly or indirectly applied to other related technical fields, are included in the same way in the patent protection scope of the present invention.
Claims (10)
1. A dual output load cell, comprising: the device comprises a main sensor, a compensation sensor and a compensation unit;
the compensation sensor is arranged in the main sensor, and the main sensor and the compensation sensor are respectively connected with the compensation unit;
the main sensor is used for collecting the weight of the load body and sending the collected weight data of the current load body to the compensation unit;
the compensation sensor is used for collecting the weight of the weight in the current state and sending the collected current weight data of the weight to the compensation unit;
and the compensation unit is used for comparing the current weight data with the weight data in a static state, and compensating the current load weight data according to a comparison result to obtain standard load weight data.
2. The dual output load cell of claim 1, wherein said primary sensor comprises: the sensor shell consists of a base, a sheath welding part and a top-layer diaphragm;
the sensor shell is internally provided with a main elastic body, and the main elastic body penetrates through a center hole of the top layer diaphragm and is arranged on the base.
3. The dual output load cell of claim 2, wherein a number of primary resistive strain gauges are also provided within said sensor housing;
the main resistance strain gauge is arranged on a strain sensitive part of the main elastic body of the column type structure;
a certain number of the main resistance strain gauges form a main Wheatstone bridge;
the main Wheatstone bridge is connected with the compensation unit;
and the main Wheatstone bridge is used for collecting the weight of the load body and sending the collected weight data of the current load body to the compensation unit.
4. The dual-output load cell of claim 3, wherein a main analog-to-digital conversion unit is further provided within said sensor housing;
the main analog-digital conversion unit is arranged on the main elastic body, and the main analog-digital conversion unit is respectively connected with the main Wheatstone bridge and the compensation unit;
the main analog-to-digital conversion unit is used for receiving the current load body weight data output by the main Wheatstone bridge and converting the current load body weight data into digital load body weight data;
the main analog-to-digital conversion unit is used for sending the digital load weight data to the compensation unit.
5. The dual-output load cell of claim 4, wherein said main analog-to-digital conversion unit comprises: a main amplifier, a main analog-to-digital converter, a main microprocessor and a main memory;
the main amplifier is respectively connected with the main Wheatstone bridge and the main analog-to-digital converter, the main microprocessor is respectively connected with the main analog-to-digital converter and the main memory, and the main microprocessor is further connected with the compensation unit through a main interface.
6. The dual output load cell of claim 5, wherein said compensation sensor comprises: a certain number of compensation resistance strain gauges, compensation elastic bodies of sheet structures and weights;
the compensation elastic body is arranged on the base, the weights are arranged at one end of the compensation elastic body, and the compensation resistance strain gauges are symmetrically adhered to the front surface and the back surface of the compensation elastic body;
the compensation resistance strain gauges form a compensation Wheatstone bridge;
wherein the compensation Wheatstone bridge is connected with the compensation unit;
and the compensation Wheatstone bridge is used for collecting the weight of the weight and sending the collected weight data of the current weight to the compensation unit.
7. The dual-output load cell of claim 6, wherein a compensation analog-to-digital conversion unit is further disposed within the sensor housing;
the compensation analog-to-digital conversion unit is arranged on the main elastic body and is respectively connected with the compensation Wheatstone bridge and the compensation unit;
the compensation analog-to-digital conversion unit is used for receiving the current weight data output by the compensation Wheatstone bridge and converting the current weight data into digital weight data;
and the compensation analog-to-digital conversion unit is used for sending the weight data of the digital weight to the compensation unit.
8. The dual-output load cell of claim 7, wherein said compensation analog-to-digital conversion unit comprises: the compensation amplifier, the compensation analog-to-digital converter, the compensation microprocessor and the compensation memory are arranged in the circuit board;
the compensation amplifier is respectively connected with the compensation Wheatstone bridge and the compensation analog-to-digital converter, the compensation microprocessor is respectively connected with the compensation analog-to-digital converter and the compensation memory, and the compensation microprocessor is further connected with the compensation unit through a compensation interface.
9. The dual-output load cell of claim 8, further comprising: a dual-channel instrument;
wherein the dual channel meter is connected with the compensation unit, and the compensation unit is disposed within the dual channel meter.
10. The dual-output load cell of claim 9, further comprising: a main regulator and a compensation regulator;
the main voltage stabilizer is respectively connected with the main analog-digital conversion unit and a power supply in the dual-channel instrument, and the compensation voltage stabilizer is respectively connected with the compensation analog-digital conversion unit and the power supply in the dual-channel instrument;
the main voltage stabilizer is used for stabilizing the power supply voltage provided by the power supply and outputting the stabilized power supply voltage to the main analog-digital conversion unit;
and the compensation voltage stabilizer is used for stabilizing the power supply voltage provided by the power supply and outputting the stabilized power supply voltage to the compensation analog-to-digital conversion unit.
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| CN202220987139.XU CN217358703U (en) | 2022-04-26 | 2022-04-26 | Double-output weighing sensor |
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| CN202220987139.XU CN217358703U (en) | 2022-04-26 | 2022-04-26 | Double-output weighing sensor |
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| CN217358703U true CN217358703U (en) | 2022-09-02 |
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| CN202220987139.XU Active CN217358703U (en) | 2022-04-26 | 2022-04-26 | Double-output weighing sensor |
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