CN210383900U - Joint bidirectional bending measuring device - Google Patents
Joint bidirectional bending measuring device Download PDFInfo
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- CN210383900U CN210383900U CN201920825525.7U CN201920825525U CN210383900U CN 210383900 U CN210383900 U CN 210383900U CN 201920825525 U CN201920825525 U CN 201920825525U CN 210383900 U CN210383900 U CN 210383900U
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Abstract
The utility model discloses a joint two-way bend measuring device relating to the technical field of measuring devices has solved the problem of unable measurement joint two-way bend degree. The key points of the technical scheme are as follows: the device comprises a current type bidirectional bending sensor, an elastic base, a driver and a data acquisition processor, wherein the driver comprises a sensor interface, an information issuing interface and an original data processing module, and the data acquisition processor comprises an information acquisition exchange interface and a data processing and visualization module. The current type bidirectional bending sensor is fixedly arranged on the elastic base and comprises a light emitting assembly, a light receiving assembly and a light guide element. The luminous flux of the photoconductive element corresponds to the bidirectional bending degree of the photoconductive element one by one, and the bidirectional bending degree of the object to be detected is judged according to the output current, so that the function of automatically monitoring the bidirectional bending of the joint of the object in real time in a large period is realized.
Description
Technical Field
The utility model relates to a measuring device technical field, in particular to joint two-way bend measuring device.
Background
The bending of joints is usually attributed to a single degree of freedom measurement problem, and it is evident that many joints are bi-directional in bending in one degree of freedom, e.g. the wrist can lift and drop, and even that some finger joints of many people can bend upwards. With the development of the disciplines of motor physiology, zoology, rehabilitation medicine and the like, higher requirements are put on the joint bidirectional bending measurement. The application scenarios of joint bidirectional bending are very wide, and the application range of joint bidirectional bending includes and is not limited to the above subject fields. At present, a resistance sensing type measuring scheme is adopted for a measuring scheme aiming at a unidirectional bending angle, but the traditional resistance sensing type measuring scheme cannot measure the bidirectional bending degree of a joint.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a joint two-way bend measuring device has the advantage that can measure the object joint two-way bend degree.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the joint bidirectional bending measuring device comprises a current type bidirectional bending sensor, an elastic base, a driver and a data acquisition processor, wherein the driver is in communication connection with the data acquisition processor, the driver is electrically connected with the current type bidirectional bending sensor, the current type bidirectional bending sensor is fixedly arranged on the elastic base, the current type bidirectional bending sensor comprises a light emitting component, a light receiving component and a flexible light guide element, the change of the luminous flux of the light guide element in the bending process of the light guide element has monotonicity, the light emitting component and the light receiving component are respectively and fixedly arranged at two ends of the light guide element, the light emitting component comprises a light emitting element, the light receiving component comprises a light receiving element, the light emitting element and the light receiving element are respectively positioned at two ends of the light guide element, and the light guide element comprises a light guide element body, the light guide member body is made of a flexible material with the refractive index larger than 1, and comprises at least 1 unit length section;
within a unit length segment: light guide member body is equipped with light loss groove and echo wall and blocks the groove, light loss groove and echo wall block the groove and all extend along the length direction of light guide member body, light loss groove depth is less than 1/20 of light guide member body width, the degree of depth that the groove was blocked to the echo wall is no longer than the degree of depth in light loss groove, light loss inslot surface area is not less than 4 times that the inslot surface area was blocked to the echo wall, at least 1 cross section center of light guide member body is located light loss groove surface geometric center and echo wall and blocks on the line at groove surface geometric center.
Further: the data acquisition processor comprises an information acquisition exchange interface and a data processing and visualization module, and the information acquisition exchange interface is in communication connection with the driver.
Further: the driver comprises a sensor interface, an information issuing interface and an original data processing module, wherein the sensor interface and the information issuing interface are electrically connected with the original data processing module, the light emitting assembly and the light receiving assembly are electrically connected with the sensor interface, the information issuing interface is in communication connection with the information acquisition and exchange interface, and the sensor interface is used for finishing the functions of driving the current type bidirectional bending sensor and acquiring the output of the current type bidirectional bending sensor.
Further: the information issuing interface and the information acquisition and exchange interface are connected through wired data or wireless data.
Further: the original data processing module is used for controlling the sensor interface and the information release interface, initializing the current type bidirectional bending sensor, and preprocessing and storing related data streams.
Further: the elastic base is a hollow columnar object with sufficient elasticity, the elastic base is used for being worn on the measured object and fully wrapping the measured object, the current type bidirectional bending sensor and the elastic base are synchronously bent in the forward direction when the measured object drives the elastic base to be bent in the forward direction, and the current type bidirectional bending sensor and the elastic base are synchronously bent in the reverse direction when the measured object drives the elastic base to be bent in the reverse direction.
To sum up, the utility model discloses following beneficial effect has:
the light guide element has monotonicity in the change of the light flux in the bidirectional bending process, so that the light flux of the light guide element corresponds to the bidirectional bending degree of the light guide element one by one, and the sensor output current emitted by the light receiving assembly corresponds to the bidirectional bending degree of the light guide element one by one. According to the current output by different sensors, the bidirectional bending degree of the photoconductive element and the measured object can be judged, and the function of automatically monitoring the bidirectional bending of the joint of the object in real time in a large period can be realized. The data can also be saved for further diagnosis.
The current type bidirectional bending sensor and the driving scheme of current driving and current output are adopted, and the output current corresponds to the bending direction and the bending degree one to one, so that the device has good adaptability, the measurement cost is very low, the calculation amount generated in the measurement process is also very low, and the overall manufacturing cost is reduced.
The driver can adjust the driving current according to actual demand, so that the output value of each current type bidirectional bending sensor in a natural straightening state is consistent, the current type bidirectional bending sensor is initialized to be automatically zeroed, and the purpose of eliminating individual difference of the sensors is directly achieved when the sensors are driven. After the joint bidirectional bending measuring device is developed, circuit parameters do not need to be adjusted in the using process, and the joint bidirectional bending measuring device can be adapted to current type bidirectional bending sensors of different models.
The information acquisition and exchange interface is in communication connection with the driver, so that the measurement data from the driver can be received through the information acquisition and exchange interface, and meanwhile, a control instruction can be sent to the driver through the information acquisition and exchange interface. The data processing and visualization module is used for controlling the information acquisition and exchange interface and acquiring data for processing and/or displaying.
Drawings
FIG. 1 is a system block diagram of a joint bidirectional bending measuring device in the present embodiment;
FIG. 2 is a cross-sectional view of a light-escape slot and a whispering gallery stop slot in this embodiment;
FIG. 3 is a schematic diagram of the optical path of the light guide element in the present embodiment in the natural straightened state;
fig. 4 is a schematic diagram of the optical path of the optical waveguide element in the present embodiment when the optical waveguide element is bent to a side close to the echo wall blocking groove;
FIG. 5 is a schematic view showing the light path of the light guide member of the present embodiment when it is bent toward the side near the light escape slot;
FIG. 6 is a schematic structural view of the elastic base in the natural straightened state in the present embodiment;
FIG. 7 is a schematic structural view of the resilient base of the present embodiment when it is bent in the forward direction;
FIG. 8 is a schematic view of the elastic base of the present embodiment in a reverse bending state;
FIG. 9 is a schematic circuit diagram of the original data processing module in the present embodiment;
FIG. 10 is a schematic diagram of the electrical connections of the sensor interface in the present embodiment;
fig. 11 is a schematic circuit connection diagram of the information distribution interface in the present embodiment.
Reference numerals: 11. a light guide body; 12. a light ray dissipation groove; 13. echo wall blocking slot; 14. a cladding layer; 15. a first connecting member; 16. a second connecting member; 21. a light emitting assembly; 22. a light receiving member; 23. an elastic base.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
the joint bidirectional bending measuring device, as shown in fig. 1, comprises a current type bidirectional bending sensor, an elastic base 23, a driver and a data acquisition processor. The current type bidirectional bending sensor is electrically connected with the driver, and the driver is in communication connection with the data acquisition processor.
The data acquisition processor comprises an information acquisition exchange interface and a data processing and visualization module. The data processing and visualization module is used for controlling the information acquisition and exchange interface and acquiring data for processing or displaying. In this embodiment, the data acquisition processor is a PC, but it is also within the scope of the present patent to adopt embedded systems, mobile phones, tablet computers, and other schemes to form the data acquisition processor.
The driver comprises a sensor interface, an information issuing interface and a raw data processing module. The original data processing module is used for controlling data streams of the sensor interface and the information issuing interface, and is used for performing automatic zeroing initialization on the sensor and preprocessing and storing related data streams. The sensor interface is electrically connected with the input end and the output end of the current type bidirectional bending sensor and used for driving the current type bidirectional bending sensor and acquiring the output function of the current type bidirectional bending sensor. The information issuing interface and the information acquisition and exchange interface can adopt wired data connection or wireless data connection, and in the embodiment, the information issuing interface and the information acquisition and exchange interface are connected through wired data. Provide sensor data to the data acquisition processor and exchange control information, command information, and other data information with the data acquisition processor.
As shown in fig. 2 to 5, the amperometric bidirectional bending sensor includes a light emitting module 21, a light receiving module 22, and a light guide element having flexibility, the refractive index of the light guide element being greater than 1, and the light guide element being an optical fiber in this embodiment. The light emitting device 21 is electrically connected to the driving current output terminal, and the light receiving device 22 is electrically connected to the sensor output current receiving terminal. The light emitting module 21 includes a light emitting element, the light receiving module 22 includes a light receiving element, and the light emitting element and the light receiving element are respectively located at two ends of the light guiding element.
The light emitting element is an active light emitting device whose light emission amount is in a proportional relationship with a driving current.
The light emitting element is a light emitting diode.
The light receiving element is an active luminous flux detection device in which the output current of the sensor is in direct proportion to the luminous flux received by the surface of the light receiving element under the condition that the power supply voltage is unchanged.
The light receiving element is a phototriode.
The light guide element comprises a light guide member body 11, the light guide member body 11 is made of a flexible material with the refractive index larger than 1, and the light guide member body 11 comprises at least 1 unit length section;
within a unit length segment: light guide member body 11 is equipped with light loss groove 12 and echo wall and blocks groove 13, light loss groove 12 and echo wall block groove 13 all extend along the length direction of light guide member body 11, light loss groove 12 degree of depth is less than 1/20 of light guide member body 11 width, the degree of depth that echo wall blocks groove 13 is no longer than light loss groove 12's degree of depth, light loss groove 12 internal surface area is not less than 4 times of echo wall block groove 13 internal surface area, at least 1 cross section center of light guide member body 11 is located light loss groove 12 surface geometric centre and echo wall and blocks on the line of groove 13 surface geometric centre.
The arrows as shown in fig. 3, 4 and 5 point in the intended light ray injection direction. Through the setting of light ease groove 12 and echo wall blocking groove 13 for light pipe spare body 11 no matter is along light ease groove 12 to echo wall blocking groove 13's direction or when blocking groove 13 to light ease groove 12's direction bending along the echo wall, can both influence the geometric model of light path through light ease groove 12 or echo wall blocking groove 13, make the geometric model of light path and the geometric model of bending loss oscillation phenomenon mismatch, thereby eliminate the bending loss oscillation phenomenon when crooked to two directions. Therefore, the light flux of the light guide body 11 bent in two different directions changes monotonously because the bending loss oscillation phenomenon is eliminated. In addition, the light flux of the light guide body 11 is monotonously changed in the process of being bent from the straight state to the single direction or in the process of being extended from the bent state to the straight state along the single direction.
When the light guide body 11 is in the straight state, due to the existence of the light-ray-escape groove 12 and the echo-wall-blocking groove 13, part of the light rays with specific incident angles escape from the skin layer of the light-ray-escape groove 12 and the echo-wall-blocking groove 13 and are dissipated, so that a part of the light flux of the light guide body 11 is lost when the light guide body is in the straight state.
When the light guide body 11 is bent to one side of the light escape groove 12, the inner surface of the light escape groove 12 is gradually compressed and gradually tends to be parallel to the incident light path, and the amount of light dissipated from the light escape groove 12 is reduced at this time; and the echo wall blocking groove 13 surface is stretched and gradually tends to be perpendicular to the incident light path, at which time the amount of light dissipated from the echo wall blocking groove 13 increases instead. Since the total of the inner surface areas of the light-radiating grooves 12 is larger than the total of the inner surface areas of the echo-wall-blocking grooves 13, the main factor causing the change in the luminous flux is the light-radiating grooves 12, and therefore the luminous flux monotonically increases as the light guide body 11 is bent to the side of the light-radiating grooves 12.
When the light guide member body 11 is bent toward one side of the echo wall blocking groove 13, the surface of the light ray escape groove 12 is stretched and gradually tends to be perpendicular to the incident light path toward the light ray escape groove 12, more light rays escape from the skin layer of the light ray escape groove 12 to be dissipated, and the light flux is reduced; at this time, the surface of the echo wall blocking groove 13 is compressed and gradually tends to be parallel to the incident light path toward the echo wall blocking groove 13, and the light that originally escapes from the skin layer from the echo wall blocking groove 13 is now retained, so that the light flux is increased. Since the total of the inner surface areas of the light-escape grooves 12 is larger than the total of the inner surface areas of the echo-wall-blocking grooves 13, the main factor causing the change in the luminous flux is the light-escape grooves 12, and therefore the luminous flux monotonously decreases as the light guide body 11 bends toward the side of the echo-wall-blocking groove 13.
So that the light flux change of the light guide body 11 is monotonously changed and the change is continuously changed no matter the light guide body 11 is bent in the direction of the echo wall blocking groove 13 toward the light escape groove 12 or in the direction of the echo wall blocking groove 13 toward the light escape groove 12.
The light guide member is supplied with a light source through the light emitting element of the light emitting module 21, and light passes from the light emitting element through the light guide member and is irradiated onto the light receiving element of the light receiving module 22. When the amount of light emitted from the light emitting element is constant, the light flux of the light guide member corresponds to the degree of bending one to one by the light guide member having monotonicity by the change of the light flux of the light guide member in the course of bending to a single direction. The light emitting element provides a stable light source, and the light guide element is bent along with the bending of the object to be detected, so that the luminous flux of the light guide element is changed, the light after the luminous flux change is received by the light receiving element and converted into a signal by the light receiving element, and the function of detecting the bending degree of the object to be detected is realized. And because the light guide element has monotonicity to the change of the luminous flux of the light guide element in the course of bending to the single direction, make the crooked direction and crooked angle of the measured object also correspond to two-way crooked degree one-to-one of the light guide element, and then the accessible light receiving element obtains the crooked direction and angle of the measured object through the signal that the light that receives converts, thus realize the effect that two-way crooked detected, thus has effectively improved the test effect and applied the field range, it is very convenient on angle measurement, still have higher measurement accuracy simultaneously.
In the present embodiment, the driving input of the sensor is a current value, and the light emission amount of the light emitting element is in a proportional relationship with the driving current; the light receiving element outputs a current value after receiving the light. Under the condition that the power supply voltage is not changed, the output current of the light receiving component 22 is in a direct proportion relation with the luminous flux received by the surface, namely, the output current of the sensor corresponds to the bending degree one by one, so that the bending direction and the bending angle of the measured object can be judged according to the magnitude of the current.
A first connecting piece 15 is arranged between the light emitting component 21 and the light guide element, the first connecting piece 15 is a solid body, the first connecting piece 15 is provided with a first opening for accommodating the light emitting component 21, the first connecting piece 15 is provided with a first connecting hole for accommodating one end of the light guide element and penetrating to the first opening, and the first connecting piece 15 is rigidly bonded with the light emitting component 21 and the light guide element through transparent adhesives respectively.
A second connector 16 is arranged between the light receiving assembly 22 and the light guide element, the second connector 16 is solid, the second connector 16 is provided with a second opening for accommodating the light receiving assembly 22, the second connector 16 is provided with a second connecting hole for accommodating one end of the light guide element and penetrating to the second opening, and the second connector 16 is rigidly adhered with the light receiving assembly 22 and the light guide element respectively through a transparent adhesive.
The external portion of leaded light spare body 11 is equipped with cladding 14, and leaded light spare body 11, light escape groove 12 and echo wall block the groove 13 surface and all laminate with cladding 14 internal surface, and cladding 14 surface is for leveling and continuous surface, and the refracting index of cladding 14 is less than the refracting index of leaded light spare body 11.
As shown in fig. 6, 7 and 8, the elastic base 23 is a hollow cylindrical object with sufficient elasticity, the current type bidirectional bending sensor is fixedly combined with the elastic base 23, the elastic base 23 is installed on the measured object, when the measured object drives the elastic base 23 to bend in the forward direction, the current type bidirectional bending sensor can be synchronously driven to bend in the forward direction, and when the measured object drives the elastic base 23 to bend in the reverse direction, the current type bidirectional bending sensor can be synchronously driven to bend in the reverse direction.
As shown in fig. 9, fig. 10 and fig. 11, the model of the chip used by the original data processing module is STM32F103C8T6, and the chip internally integrates an ARM core central computing device, a FLASH memory device, a PWM generator, an ADC analog-to-digital converter and a USB communication controller. The original data processing module comprises a crystal oscillator circuit and a reset circuit, wherein the crystal oscillator circuit comprises Y1, C3, C4 and R4 elements, and the reset circuit comprises R5 and C5 elements. After the crystal oscillator circuit and the reset circuit are built, the embedded chip can work normally. The original data processing module is connected with the sensor interface through the Ud and the Uout terminal, and is connected with the information issuing interface through the USB _ DP and the USB _ DM terminal. The original data processing module can also perform operations such as preprocessing and storage on the related data stream.
The PWM generating device is configured to pin 42 of the STM32F103C8T6 chip, that is, voltage regulation information Ud is output through pin 42, and in the present embodiment, the voltage regulation information Ud is PWM information; the ADC analog-to-digital conversion device is configured to a pin 10 of an STM32F103C8T6 chip, namely the output voltage Uout of the sensor is acquired through the pin 10, and the Uout can also be sent to an external measurement application device through the pin 10; the USB communication control device is configured to the 31 pin and the 32 pin of the STM32F103C8T6 chip, through which USB communication with an external measurement application apparatus is possible.
The FLASH memory device is internally stored with an initialized expected output value Vexpect, an adjusting step length △ U, a voltage adjusting default value Udefault, a voltage adjusting set value record Urec and an error value epsilon, the conversion method is related to the topological parameters of a driving voltage shaping circuit, a V-I conversion circuit and a filter circuit, and the default value Udefault is not lower than the conversion value of the minimum current value of the driving current type bidirectional sensor.
The ARM core central computing device reads an initialized expected output value Vexpect, an error value epsilon and an output voltage Vout received by an ADC analog-to-digital conversion device in a memory, calculates △ V as Vexpect-Vout, compares | △ V | and epsilon, stores current driving voltage information Ud in a FLASH memory device and replaces an original voltage regulation set value to record Urec if | △ V | < epsilon, thereby updating the voltage regulation set value to record Urec.
The sensor interface circuit comprises R7, C7, R8, C8, R9, C9 elements and a sensor connector S1. The Ud terminal drives the sensor using PWM, which after passing through an RC filter network formed by R7 and C7, is shaped into a dc voltage Udrive whose magnitude is proportional to the PWM duty cycle. C8 is connected with the light emitting device at the input end of the sensor in parallel and is used for filtering high-frequency noise waves; where R8 is in series with the light emitting device at the sensor input, Udrive is converted to a sensor drive current Id by R8. One end of the R9 is pulled up by VCC and the other end is connected in series with the sensor output to provide power to the photo transistor at the sensor output, the photo transistor photo-excited current will flow through R9, creating a voltage drop across R9, and the output current of the sensor is converted into the sensor output voltage Uout. And C9 is responsible for filtering out the high frequency noise of Uout.
So far, the driver can complete the function of initializing the current type bidirectional bending sensor by automatically returning to zero through the original data processing module and the sensor interface, so that the output value of each current type bidirectional bending sensor in a natural straightening state is consistent, and the aim of directly eliminating the individual difference of the sensor is achieved when the sensor is driven. After the joint bidirectional bending measuring device is developed, circuit parameters do not need to be adjusted in the using process, the joint bidirectional bending measuring device can be adapted to current type bidirectional bending sensors of different models, and the production efficiency and the measuring efficiency are greatly improved.
In this embodiment, the information issuing interface of the driver adopts a USB interface scheme, J1 is a USB connector, and the USB circuit includes elements such as R1, R2, and R3. The STM32F103C8T6 chip connects the USB interface through the USB _ DP and USB _ DM terminals. Through USB connection, the PC can be responsible for collecting sensor data, processing or storing sensor data and human-computer interaction data, data visualization and other functions. In this embodiment, the information issuing interface and the information collecting and exchanging interface adopt a USB connection scheme, but it is also within the scope of the present patent to design the information issuing interface and the information collecting and exchanging interface by adopting schemes such as serial connection, bluetooth connection, wireless data connection, and the like.
So far, the driver is used as an intermediate layer of the current type bidirectional bending sensor and the data acquisition processor, and the current type bidirectional bending sensor and the data acquisition processor are connected to form an integral closed loop structure.
The embodiment has the following advantages:
the current type bidirectional bending sensor is fixedly installed on the elastic base 23, and then the elastic base 23 is installed on a measured object, so that the measured object drives the elastic base 23 and the current type bidirectional bending sensor on the elastic base 23 to be bent and deformed, and information acquisition can be carried out on the measured object through the current type bidirectional bending sensor. The driver inputs a driving current into the light emitting assembly 21, the light emitting assembly 21 is driven to emit light, the light is transmitted in the light guide element, the light flux change in the bidirectional bending process of the light guide element is utilized, the light received by the light receiving assembly 22 is related to the bidirectional bending degree of the light guide element, and the light receiving assembly 22 outputs a sensor output current to the driver after receiving the light. And because the light guide element has monotonicity in the change of the light flux in the bidirectional bending process, the light flux of the light guide element can be in one-to-one correspondence with the bidirectional bending degree of the light guide element, so that the sensor output current emitted by the light receiving assembly 22 is in one-to-one correspondence with the bidirectional bending degree of the light guide element. According to the current output by different sensors, the bidirectional bending degree of the photoconductive element and the measured object can be judged, and the function of automatically monitoring the bidirectional bending of the joint of the object in real time in a large period can be realized.
The current type bidirectional bending sensor and the driving scheme of current driving and current output are adopted, and the output current corresponds to the bending direction and the bending degree one to one, so that the device has good adaptability, the measurement cost is very low, the calculation amount generated in the measurement process is also very low, and the overall manufacturing cost is reduced.
The driver sends a driving current to the current type bidirectional bending sensor and receives an output current sent by the current type bidirectional bending sensor, and the driver comprises a raw data processing module with calculation capability, can be preprocessed and/or stored according to the output current sent by the current type bidirectional bending sensor, and can synchronously adjust the driving current, so that the driver is allowed to automatically zero and initialize the current type bidirectional bending sensor, the output value of each current type bidirectional bending sensor in a natural straightening state is consistent, and the aim of eliminating individual difference of the sensor is directly achieved when the sensor is driven. After the joint bidirectional bending measuring device is developed, circuit parameters do not need to be adjusted in the using process, the joint bidirectional bending measuring device can be adapted to current type bidirectional bending sensors of different models, and the production efficiency and the measuring efficiency are greatly improved.
The driver transmits the data to the data processing and visualization module through the information publishing interface and the information acquisition and exchange interface. The information acquisition and exchange interface is in communication connection with the driving device, so that the measurement data from the driving device can be received through the information acquisition and exchange interface, and meanwhile, a control instruction can be sent to the driving device through the information acquisition and exchange interface. The data processing and visualization module is used for controlling the information acquisition and exchange interface and acquiring data for processing and/or displaying. The decoupling concept is essentially decoupling between the sensor and an external measurement application device, for the external measurement application device, different current type bidirectional bending sensors are replaced, the initial output values of the current type bidirectional bending sensors are uniform, and the concept of closed loop-decoupling can be applied to more application scenes.
The embodiment is suitable for different types of current type bidirectional bending sensors, and the embodiment is not only used for measuring the bidirectional bending of the joint, but also can be derived and applied to all the fields of bidirectional bending measurement, such as a bionic robot and the like. The number of the current-type bidirectional bending sensors, the drivers and the data acquisition processors in the embodiment can be more than 1 to manufacture the measuring device. Such derivatives are intended to be within the scope of this patent.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (6)
1. Joint bidirectional bending measuring device, its characterized in that: the device comprises a current type bidirectional bending sensor, an elastic base (23), a driver and a data acquisition processor, wherein the driver is in communication connection with the data acquisition processor, the driver is electrically connected with the current type bidirectional bending sensor, the current type bidirectional bending sensor is fixedly arranged on the elastic base (23), the current type bidirectional bending sensor comprises a light emitting component (21), a light receiving component (22) and a flexible light guide element, the change of the luminous flux of the light guide element in the bending process of the light guide element has monotonicity, the light emitting component (21) and the light receiving component (22) are respectively and fixedly arranged at two ends of the light guide element, the light emitting component (21) comprises a light emitting element, the light receiving component (22) comprises a light receiving element, and the light emitting element and the light receiving element are respectively positioned at two ends of the light guide element, the light guide element comprises a light guide body (11), the light guide body (11) is made of a flexible material with the refractive index larger than 1, and the light guide body (11) comprises at least 1 unit length section;
within a unit length segment: light guide member body (11) are equipped with light ease groove (12) and echo wall and block groove (13), light ease groove (12) and echo wall block groove (13) all extend along the length direction of light guide member body (11), light ease groove (12) degree of depth is less than 1/20 of light guide member body (11) width, the degree of depth of echo wall block groove (13) is no longer than the degree of depth of light ease groove (12), light ease groove (12) internal surface area is not less than 4 times of echo wall block groove (13) internal surface area, at least 1 cross section center of light guide member body (11) is located light ease groove (12) surface geometric center and echo wall block groove (13) surface geometric center's line.
2. The joint bi-directional flexion measurement device of claim 1, wherein: the data acquisition processor comprises an information acquisition exchange interface and a data processing and visualization module, and the information acquisition exchange interface is in communication connection with the driver.
3. The joint bi-directional flexion measurement device of claim 1, wherein: the driver comprises a sensor interface, an information issuing interface and an original data processing module, wherein the sensor interface and the information issuing interface are electrically connected with the original data processing module, the light emitting assembly (21) and the light receiving assembly (22) are electrically connected with the sensor interface, the information issuing interface is in communication connection with the information acquisition and exchange interface, and the sensor interface is used for finishing the functions of driving the current type bidirectional bending sensor and acquiring the output of the current type bidirectional bending sensor.
4. The joint bi-directional flexion measurement device of claim 3, wherein: the information issuing interface and the information acquisition and exchange interface are connected through wired data or wireless data.
5. The joint bi-directional flexion measurement device of claim 3, wherein: the original data processing module is used for controlling the sensor interface and the information release interface, initializing the current type bidirectional bending sensor, and preprocessing and storing related data streams.
6. The joint bi-directional flexion measurement device of claim 1, wherein: elastic pedestal (23) are for having abundant elastic hollow column object, elastic pedestal (23) are used for wearing to the measured object on and fully wrap up the measured object, and electric current formula two-way bend sensor and elastic pedestal (23) are synchronous forward bending when the measured object drives elastic pedestal (23) forward bending, and electric current formula two-way bend sensor and elastic pedestal (23) are synchronous reverse bending when the measured object drives elastic pedestal (23) reverse bending.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920825525.7U CN210383900U (en) | 2019-06-03 | 2019-06-03 | Joint bidirectional bending measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920825525.7U CN210383900U (en) | 2019-06-03 | 2019-06-03 | Joint bidirectional bending measuring device |
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| CN210383900U true CN210383900U (en) | 2020-04-24 |
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| CN201920825525.7U Withdrawn - After Issue CN210383900U (en) | 2019-06-03 | 2019-06-03 | Joint bidirectional bending measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101390A (en) * | 2019-06-03 | 2019-08-09 | 呜啦啦(广州)科技有限公司 | Joint compound bending measuring device |
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2019
- 2019-06-03 CN CN201920825525.7U patent/CN210383900U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101390A (en) * | 2019-06-03 | 2019-08-09 | 呜啦啦(广州)科技有限公司 | Joint compound bending measuring device |
| CN110101390B (en) * | 2019-06-03 | 2023-11-07 | 呜啦啦(广州)科技有限公司 | Joint bidirectional bending measuring device |
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