CN211401502U - Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor - Google Patents
Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor Download PDFInfo
- Publication number
- CN211401502U CN211401502U CN201922434436.2U CN201922434436U CN211401502U CN 211401502 U CN211401502 U CN 211401502U CN 201922434436 U CN201922434436 U CN 201922434436U CN 211401502 U CN211401502 U CN 211401502U
- Authority
- CN
- China
- Prior art keywords
- push
- capacitive
- pull force
- sensing circuit
- force sensor
- 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
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract description 3
- 210000004247 hand Anatomy 0.000 description 5
- 210000003813 thumb Anatomy 0.000 description 5
- 210000003811 finger Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0026—Propulsion aids
- B62B5/0069—Control
- B62B5/0073—Measuring a force
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The utility model discloses a capacitance type push-pull force sensor, a capacitance sensing circuit and a trolley with the sensor, wherein the capacitance type push-pull force sensor comprises an elastic insulating sheet, two conducting sheets and a capacitance sensing circuit, the two conducting sheets are oppositely arranged on the two side surfaces of the elastic insulating sheet, one end of the capacitance sensing circuit is connected with one conducting sheet, and the other end is connected with the other conducting sheet; under the action of an external force, the elastic insulation sheet deforms, so that the capacitance value of a capacitor formed by the two conductive sheets changes; after the external force is removed, the elastic insulation sheet is restored to the initial state, and the capacitance sensing circuit detects the change of the capacitance value of the capacitor by detecting the oscillation frequency. The utility model discloses a push-and-pull power that the direct detection staff pushed handle to the shallow comes intelligent regulation shallow helping hand, improves the accuracy nature that the helping hand was adjusted.
Description
Technical Field
The utility model relates to a helping hand shallow field, in particular to capacitanc push-and-pull force sensor, electric capacity sensing circuit and have shallow of sensor.
Background
The cart is a very convenient tool of riding instead of walk, and along with the progress of science and technology, helping hand cart receives consumer's favor increasingly, and helping hand cart adopts actuating mechanism drive cart wheel promptly to alleviate the manpower and carry out the burden, especially under the poor condition of ramp up and down or road conditions.
Obviously, the driving force of the power-assisted cart cannot be constant, but is adjusted in real time according to the road conditions, and chinese patent applications CN105644606A and CN106043397A in the prior art both disclose a power-assisted adjustment function for the cart by detecting the thrust or inclination state of the cart body during pushing.
However, in the prior art, the detected result is the stress brought to the bracket by the vehicle body jolt, and the push-pull force of a hand to the vehicle body push handle is not directly detected, so that the power-assisted adjusting effect of the cart in the prior art is not delayed or not accurate enough, for example, on a slope with slightly different inclination, the power-assisted adjusting result is the same under two conditions because the force detection cannot be obviously different.
The prior art does not have a technology for intelligently adjusting the power of a trolley by directly detecting the push-pull force of hands on a pushing handle of the trolley.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of prior art, the utility model provides a capacitanc push-and-pull force sensor, electric capacity sensing circuit and have shallow of sensor comes intelligent regulation shallow helping hand through the push-and-pull force that direct detection staff pushed away the handle to the shallow, improves the accuracy nature that the helping hand was adjusted, technical scheme is as follows:
on one hand, the utility model provides a capacitive push-pull force sensor, which comprises an elastic insulating sheet and two conducting sheets, wherein the two conducting sheets are oppositely arranged on the two side surfaces of the elastic insulating sheet;
under the action of an external force, the elastic insulation sheet deforms, so that the capacitance value of a capacitor formed by the two conductive sheets changes; after the external force is removed, the elastic insulation sheet is restored to the initial state.
Optionally, the elastic insulation sheet is deformable in a thickness direction and/or is deformable in a bending manner.
On the other hand, the utility model provides an use the electric capacity sensing circuit of sensor, the one end and a conducting strip of electric capacity sensing circuit are connected, and the other end is connected with another conducting strip.
Further, the capacitance sensing circuit is a single chip microcomputer oscillation circuit.
On the other hand, the utility model provides a cart, include as above capacitanc push-and-pull force transducer.
Further, the cart also comprises a frame with a push handle, and the capacitive push-pull force sensor is arranged on the push handle above the frame.
The cart further comprises wheels, a driving mechanism for driving the wheels to rotate, and a main control panel arranged on the frame, and the cart further comprises a capacitance sensing circuit, wherein one end of the capacitance sensing circuit is connected with one conducting strip of the capacitance type push-pull force sensor, the other end of the capacitance sensing circuit is connected with the other conducting strip, the capacitance sensing circuit is electrically connected with the input end of the main control panel, and the output end of the main control panel is electrically connected with the driving mechanism.
Further, the cart further comprises a power supply, wherein the power supply is used for supplying power to the main control panel and supplying power to the driving mechanism and the capacitive push-pull force sensor through the main control panel.
Furthermore, the number of the capacitive push-pull force sensors is at least two, and the capacitive push-pull force sensors are respectively arranged on the front side surface and the rear side surface of the push handle body.
Furthermore, the number of the capacitive push-pull force sensors is four, and the capacitive push-pull force sensors are respectively arranged on the left front surface of the push handle body, the left rear surface of the push handle body, the right front surface of the push handle body and the right rear surface of the push handle body.
The utility model provides a beneficial effect that technical scheme brought as follows:
1) the push-pull force of hands on a push handle of the cart is directly detected to intelligently adjust the power of the cart, so that the accuracy of power adjustment is improved;
2) the pushing force or the pulling force of hands on a pushing handle of the cart is directly detected, and then the boosting mechanism is adjusted to drive wheels to accelerate or decelerate;
3) can install helping hand system additional on ordinary shallow, application scope is extensive.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an exploded schematic view of a capacitive push-pull force sensor according to an embodiment of the present invention;
fig. 2 is a perspective view of a cart frame with a capacitive push-pull force sensor according to an embodiment of the present invention;
fig. 3 is a side view of a cart having capacitive push-pull force sensors provided by an embodiment of the present invention;
fig. 4 is a block diagram of an intelligent power adjustment system of a cart having a capacitive push-pull force sensor according to an embodiment of the present invention.
Wherein the reference numerals include: the method comprises the following steps of 1-capacitive push-pull force sensor, 11-elastic insulation sheet, 12-conductive sheet, 2-vehicle frame, 21-push handle, 3-wheel, 4-driving mechanism, 5-main control board and 6-power supply.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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 shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The utility model provides an intelligence helping hand shallow has the mode that can judge the helping hand of control motor through automatic perception hand (hold) thrust, makes the people can easily carry out safely.
In an embodiment of the present invention, there is provided a capacitive push-pull force sensor, referring to fig. 1, the capacitive push-pull force sensor includes an elastic insulating sheet 11 and two conductive sheets 12, the two conductive sheets 12 are oppositely disposed on two side surfaces of the elastic insulating sheet 11, and the conductive sheets 12 are preferably electric conductor thin film pole pieces; under the action of an external force, the elastic insulating sheet 11 deforms (the elastic insulating sheet 11 can deform in the thickness direction and/or can deform in a bending manner), so that the capacitance value of the capacitor formed by the two conductive sheets 12 changes; after the external force is removed, the elastic insulation sheet 11 is restored to the original state.
The embodiment of the utility model provides a survey through electric capacity sensing circuit capacitanc push-and-pull force sensor's capacitance value, specifically, electric capacity sensing circuit is singlechip oscillating circuit, electric capacity sensing circuit's one end is connected with a conducting strip 12, and the other end is connected with another conducting strip 12. The single-chip microcomputer oscillating circuit can detect the oscillating frequency of the capacitor, and the measured oscillating frequency is used as the reference frequency under the condition that the elastic insulating sheet 11 is not deformed; under the condition that the elastic insulation sheet 11 deforms, the measured offset frequency between the oscillation frequency and the reference frequency is used as a transformation basis for the change of the capacitance value, that is, the larger the offset frequency is, the larger the change of the capacitance value is.
In an embodiment of the present invention, a cart is provided, including the capacitive push-pull force sensor 1 as described above, specifically as shown in fig. 2 and fig. 3, the cart further includes a frame 2, a wheel 3, a power source 6, a driving mechanism 4 for driving the wheel 3 to rotate, and a main control board 5 disposed on the frame 2, the capacitive push-pull force sensor is disposed on a push handle 21 above the frame 2.
As shown in fig. 4, the capacitance sensing circuit of the capacitive push-pull force sensor 1 is electrically connected to the input end of the main control board 5, the output end of the main control board 5 is electrically connected to the driving mechanism 4 (e.g., a motor), and a motor axle is mounted on the frame 2, as shown in fig. 2. The power supply 6 is used for supplying power to the main control panel 5 and supplying power to the driving mechanism 4 and the capacitive push-pull force sensor 1 through the main control panel 5.
In an embodiment of the present invention, the number of the capacitive push-pull force sensors 1 is at least two, and the capacitive push-pull force sensors are respectively disposed on the front side and the back side of the handle 21, the capacitive sensing circuits are in one-to-one correspondence with the capacitive push-pull force sensors 1, and the main control board 5 can identify the capacitive sensing circuits corresponding to the capacitive push-pull force sensors 1 on the front side and the back side. When it is detected that the capacitance value measured by the capacitance sensing circuit corresponding to the capacitive push-pull force sensor 1 on the front side changes (for example, when only a finger other than the thumb hooks the front side of the push handle 21), or the capacitance change value measured by the capacitance sensing circuit corresponding to the capacitive push-pull force sensor 1 on the front side is greater than that on the rear side (for example, when the push handle 21 is held by hand and the push handle 21 is pulled), the main control panel 5 sends a rotation instruction opposite to the advancing direction of the wheels to the driving mechanism 4 to drive the cart to decelerate; on the contrary, when it is detected that the capacitance value measured by the capacitance sensing circuit corresponding to the rear capacitive push-pull force sensor 1 changes (for example, when only the palm pushes the rear side of the push handle 21), or the capacitance change value measured by the capacitance sensing circuit corresponding to the rear capacitive push-pull force sensor 1 is greater than that of the front capacitive push-pull force sensor (for example, when the push handle 21 is held by hand and the push handle 21 is pushed), the main control board 5 sends a rotation command to the driving mechanism 4 in the same direction as the advancing direction of the wheels to accelerate the cart. In a preferred embodiment of the present invention, the number of the capacitive push-pull force sensors 1 is four, and the four capacitive push-pull force sensors are respectively disposed on the front left of the push handle 21, the back left of the push handle, the front right of the push handle 21 and the back right of the push handle, as shown in fig. 2, so that when a user holds the push handle 21 of the cart with both hands, fingers of the left hand except the thumb can contact the capacitive push-pull force sensors 1 on the front left of the push handle 21, the palm of the left hand close to the thumb can contact the capacitive push-pull force sensors 1 on the back left of the push handle 21, fingers of the right hand except the thumb can contact the capacitive push-pull force sensors 1 on the front right of the push handle 21, and the palm of the right hand close to the thumb can contact the capacitive push-pull force sensors 1 on the back right of.
In the process of advancing the cart, the friction force between four wheel tires connected to the lower part of the cart frame 2 and the ground is transmitted upwards to the push handle 21 above the cart frame 2 through the cart frame bracket, the capacitive push-pull force sensors 1 arranged in four areas, namely the front area, the rear area, the left area and the right area, held by hands, on the push handle 21 are continuously extruded, the elastic insulation sheet 11 is continuously deformed, the capacitance values of the continuously changed capacitive push-pull force sensors 1 are captured, the signals are analyzed through the main control board 5, the driving direction and the required power magnitude are judged, and the driving mechanism 4 (the motor) is controlled to finish the assistance.
Furthermore, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The capacitive push-pull force sensor is characterized in that the capacitive push-pull force sensor (1) comprises an elastic insulating sheet (11) and two conducting sheets (12), wherein the two conducting sheets (12) are oppositely arranged on two side surfaces of the elastic insulating sheet (11);
under the action of an external force, the elastic insulation sheet (11) deforms, so that the capacitance value of a capacitor formed by the two conductive sheets (12) changes; after the external force is removed, the elastic insulation sheet (11) is restored to the initial state.
2. Capacitive push-pull force sensor according to claim 1, characterized in that the elastic insulating sheet (11) is deformable in the thickness direction and/or is deformable in bending.
3. A capacitive sensing circuit using a sensor as claimed in claim 1 or 2, characterised in that one end of the capacitive sensing circuit is connected to one conductive plate (12) and the other end is connected to the other conductive plate (12).
4. The capacitance sensing circuit of claim 3, wherein the capacitance sensing circuit is a single-chip oscillator circuit.
5. A cart, characterized by comprising a capacitive push-pull force sensor (1) according to claim 1 or 2.
6. The cart according to claim 5, further comprising a frame (2) having a push handle (21), said capacitive push-pull force sensor being arranged on the push handle (21) above the frame (2).
7. The cart according to claim 6, further comprising a wheel (3), a driving mechanism (4) for driving the wheel (3) to rotate, and a main control board (5) disposed on the frame (2), wherein the cart further comprises a capacitance sensing circuit, one end of the capacitance sensing circuit is connected to one conductive sheet (12) of the capacitive push-pull force sensor (1), the other end of the capacitance sensing circuit is connected to the other conductive sheet (12), the capacitance sensing circuit is electrically connected to an input end of the main control board (5), and an output end of the main control board (5) is electrically connected to the driving mechanism (4).
8. The cart according to claim 7, further comprising a power source (6), wherein the power source (6) is used for supplying power to the main control board (5) and supplying power to the driving mechanism (4) and the capacitive push-pull force sensor (1) through the main control board (5).
9. The trolley according to claim 6, characterized in that the number of the capacitive push-pull force sensors (1) is at least two, and the sensors are respectively arranged on the front side and the rear side of the body of the push handle (21).
10. The cart according to claim 9, wherein the number of the capacitive push-pull force sensors (1) is four, and the sensors are respectively arranged on the push handle (21) at the front left body, the rear left body, the front right body and the rear right body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922434436.2U CN211401502U (en) | 2019-12-30 | 2019-12-30 | Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922434436.2U CN211401502U (en) | 2019-12-30 | 2019-12-30 | Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211401502U true CN211401502U (en) | 2020-09-01 |
Family
ID=72212940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922434436.2U Active CN211401502U (en) | 2019-12-30 | 2019-12-30 | Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211401502U (en) |
-
2019
- 2019-12-30 CN CN201922434436.2U patent/CN211401502U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3894691B2 (en) | Data input device using palate plate | |
| JP6273937B2 (en) | Road surface condition estimation device | |
| CN104423647B (en) | Touch-control input device and system | |
| US20100315364A1 (en) | Portable Terminal | |
| WO2015141152A1 (en) | Tire state detection device | |
| CN102498669A (en) | Sensor device and method for grip and proximity detection | |
| JP6488986B2 (en) | Road surface condition estimation device | |
| EP1595767A3 (en) | Power steering control device for monitoring reference voltage | |
| CN102125495A (en) | Multifunctional robot with slippage sensor for helping aged people to walk | |
| CN211401502U (en) | Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor | |
| WO2008080328A1 (en) | Capacitor type touch screen | |
| CN102306064A (en) | Touch screen control device and control method thereof | |
| WO2023045189A1 (en) | Steering wheel holding posture monitoring method and system based on triboelectric nanosensors | |
| CN215298209U (en) | Touch awakening detection circuit, fingerprint identification device, display panel and electronic equipment | |
| CN111024274A (en) | Capacitive push-pull force sensor, capacitive sensing circuit and trolley with sensor | |
| CN109533000A (en) | A kind of intelligent human-machine interaction steering wheel arrangement and methods for using them with tactilely-perceptible | |
| CN202015325U (en) | Multifunctional elderly-aid and walking-aid robot with tactile and slip sensor | |
| CN105573529A (en) | Active touch pen and operation method thereof | |
| CN211997259U (en) | Gesture control switch device of delivery door of garbage classification recycling bin and recycling bin | |
| TWI448940B (en) | Method for adjusting the sensitivity of the touch panel | |
| CN106772623A (en) | A kind of condenser type seat sensor and method of work | |
| CN213831721U (en) | Helping hand shallow with touch-sensitive screen | |
| JP5498026B2 (en) | Touch panel device | |
| JPH1040015A (en) | Touch panel control circuit | |
| CN105128699B (en) | A kind of control method of portable pocket-type intelligent electric motor car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |