CN214632906U

CN214632906U - Walking aid with gradient detection system

Info

Publication number: CN214632906U
Application number: CN202022902488.0U
Authority: CN
Inventors: 姚艳波; 冯海燕
Original assignee: Mirun Medical Technology Suzhou Co ltd
Current assignee: Mirun Medical Technology Suzhou Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-11-09
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses a help capable ware with gradient detecting system, including frame and the gyro wheel of setting in the frame bottom, be equipped with a plurality of distance sensor in the frame, be equipped with pressure sensor between frame and the roller shaft, distance sensor can detect its and the ground between the distance, and distance sensor, pressure sensor are connected with microprocessor's input, and microprocessor's output and alarm device are connected. When the pressure sensor is changed from the original pressure state to no pressure state and the difference between the distance values sensed by at least two distance sensors in the distance sensors and the distance values sensed by other distance sensors exceeds a certain value, the microprocessor drives the alarm device to act. Since the rehabilitation trainee needs to perform rehabilitation training by means of the walking aid, the falling of the walking aid means that the rehabilitation trainee does not have auxiliary support, and there is a high possibility that the rehabilitation trainee also falls down, or at least, the rehabilitation trainee needs help to right the walking aid.

Description

Walking aid with gradient detection system

Technical Field

The utility model relates to a rehabilitation training device, concretely relates to helps capable ware.

Background

The walking aid comprises a frame and rollers arranged at the bottom of the frame. The top of the frame is provided with a handle, and a rehabilitation trainer holds a pair of handles with both hands, walks with the assistance of the walking aid and carries out the rehabilitation training of legs and feet.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: when the walking aid falls down, the walking aid can give an alarm.

In order to solve the technical problem, the utility model provides a following technical scheme: a walking aid with an inclination detection system comprises a rack and rollers arranged at the bottom of the rack, wherein a plurality of distance sensors are arranged on the rack, pressure sensors are arranged between the rack and roller shafts and can detect the distance between the distance sensors and the ground, the distance sensors and the pressure sensors are connected with the input end of a microprocessor, and the output end of the microprocessor is connected with an alarm device.

The rehabilitation trainer carries out rehabilitation training by means of the walking aid, and once the walking aid is separated from the rehabilitation trainer, the pressure sensor is not pressed, and the microprocessor can receive signals of the change. However, it is not accurate to judge whether the walker is fallen or not only by the change of the signal of the pressure sensor because the rehabilitation trainee may sit on the seat in the public place after getting out of the walker.

The change in the signals delivered to the microprocessor by the distance sensors can be judged in the event that the walker falls, but it can be determined that the walker has fallen instead of the change in the signals delivered to the microprocessor by the distance sensors, for example, the walker is walking on a rough road, the change in the signals delivered to the microprocessor by the distance sensors being similar to the change in the signals delivered to the microprocessor by the distance sensors when the walker falls.

The utility model discloses synthesize the signal that comes from pressure sensor and distance sensor, judge and help the capable ware to fall down. Specifically, when the pressure sensor is changed from the original pressure state to no pressure state and the difference between the distance values sensed by at least two distance sensors in the distance sensors and the distance values sensed by other distance sensors exceeds a certain value, the microprocessor drives the alarm device to act.

Since the rehabilitation trainee needs to perform rehabilitation training by means of the walking aid, the falling of the walking aid means that the rehabilitation trainee does not have auxiliary support, and there is a high possibility that the rehabilitation trainee also falls down, or at least, the rehabilitation trainee needs help to right the walking aid.

Drawings

The invention will be further explained with reference to the drawings:

FIG. 1 is a schematic view of a portion of a walker;

FIG. 2 is a schematic circuit diagram of a tilt detection system;

FIG. 3 is a schematic diagram of any of the filter amplifier circuits of FIG. 2;

fig. 4 is a schematic diagram of any one of the delay circuits of fig. 2.

The symbols in the drawings illustrate that:

10. a frame;

20. a roller; 21. a roller shaft;

30. a pressure sensor; 31. a microprocessor; 32. a speed sensor;

41. a first distance sensor; 411. a first filtering and amplifying circuit; 412. a first delay circuit; 42. a second distance sensor; 421. a second filtering and amplifying circuit; 422. a second delay circuit; 43. a third distance sensor; 431. a third filtering and amplifying circuit; 432. a third delay circuit; 44. a fourth distance sensor; 441. a fourth filtering and amplifying circuit; 442. a fourth delay circuit;

51. a sounding alarm; 52. a wireless signal transmitter.

Detailed Description

With reference to fig. 1 and 2, the walking aid with an inclination detecting system comprises a frame 10 and a roller 20 arranged at the bottom of the frame, wherein a plurality of distance sensors are arranged on the frame, a pressure sensor 30 is arranged between the frame and the roller shaft 21, the distance sensors can detect the distance between the distance sensors and the ground, the distance sensors and the pressure sensor are connected with the input end of a microprocessor 31, and the output end of the microprocessor is connected with an alarm device.

As a structural design, the bottom of the frame 10 is provided with a shaft hole, a roller shaft 21 is arranged in the shaft hole, a roller 20 is arranged on the roller shaft through a bearing, the pressure sensor 30 is arranged between the shaft hole and the roller shaft, a rehabilitation trainer applies downward pressure to the frame, the frame presses the roller shaft, and the pressure sensor is subjected to pressure sensing.

When the pressure sensor 30 is changed from the original pressure state to no pressure, the pressure sensor does not send a signal to the microprocessor 31, and the difference between the distance value sensed by at least two of the distance sensors and the distance value sensed by other distance sensors exceeds a certain value, the microprocessor 31 drives the alarm device to act, which indicates that the walking aid falls down.

When the walker is driven over a recessed structure in the ground, it is possible that the difference between the distance sensed by the two distance sensors and the distance sensed by the other distance sensors will also exceed a certain value, but if the pressure sensor 30 sends a pressure signal to the microprocessor 31, the microprocessor 31 will not actuate the alarm device.

When the rehabilitation trainer is sitting on the seat off the walker, the pressure sensor 30 no longer sends a pressurized signal to the microprocessor, at which time the walker should rest on a flat ground, which the rehabilitation trainer can realize. Even if the ground is slightly uneven, the microprocessor 31 will not drive the alarm device to operate as long as the difference between the distance values sensed by two distance sensors and the distance values sensed by other distance sensors exceeds a certain value.

Alternatively, the number of the distance sensors is four, and the orthographic projection of the four distance sensors on the horizontal ground is four corners of a square. The four distance sensors are respectively a first distance sensor 41, a second distance sensor 42, a third distance sensor 43 and a fourth distance sensor 44, and in order to improve the accuracy of the microprocessor 31 driving the alarm device to act, the first distance sensor, the second distance sensor, the third distance sensor and the fourth distance sensor are respectively positioned above the four rollers 20. If the walker is resting on uneven ground, the distances sensed by the four distance sensors should be the same as long as the rollers are in contact with the ground.

The first distance sensor 41 sends a signal to the microprocessor 31 after passing through the first filtering and amplifying circuit 411; the second distance sensor 42 sends a signal to the microprocessor 31 after passing through the second filtering and amplifying circuit 421; the third distance sensor 43 sends a signal to the microprocessor 31 after passing through the third filtering and amplifying circuit 431; the fourth distance sensor 44 sends a signal to the microprocessor 31 after passing through the fourth filtering and amplifying circuit 441. As shown in fig. 3, each of the filter amplifier circuits includes a first operational amplifier AR1, a non-inverting input terminal of the first operational amplifier AR1 is connected to one end of a resistor R2, a capacitor C2, and a capacitor C3 through a resistor R3, the other end of the resistor R2 is grounded, the other end of the capacitor C2 is connected to one end of a capacitor C1 and a positive output terminal of the first pressure sensor through a resistor R1, a negative output terminal of the distance sensor is grounded to the other end of the capacitor C1, an inverting input terminal of the first operational amplifier AR1 is grounded through a resistor R4, and an output terminal of the first operational amplifier AR1 is connected to the other end of the capacitor C3 and a cathode of the zener diode DZ. The filtering and amplifying circuit can effectively filter outside clutter interference and improve the accuracy of a detection result.

As an improvement, the signal of each distance sensor is processed by a filtering and amplifying circuit, and then is connected with the input end of the microprocessor 31 through a respective delay circuit. Specifically, the first distance sensor 41 is associated with a first delay circuit 412, the second distance sensor 42 is associated with a second delay circuit 422, the third distance sensor 43 is associated with a third delay circuit 432, and the fourth distance sensor 44 is associated with a fourth delay circuit 442. Each delay circuit is the same, as shown in fig. 4, the resistor R5 and the capacitor C4 of each delay circuit perform delay output on the output signal of the first operational amplifier AR1 by using the RC delay circuit principle, and when the delay circuit is specifically set, appropriate parameter selection is performed on the resistor R5 and the capacitor C4, so as to set the delay time at 1 s. The time delay circuit is in the utility model provides an effect: when the walking aid crosses the different road surfaces of height, the gyro wheel 20 short-lived state of vacating may appear, and at this moment, pressure sensor 30 is not pressed, and the distance value that two distance sensors among four distance sensors detected probably has great difference with the distance value that other distance sensors detected, and this satisfies the alarm condition, in order to avoid alarm device's misinformation, the utility model discloses delay circuit has been mated to each distance sensor.

As shown in fig. 2, the alarm device includes an audible alarm 51 and a wireless signal transmitter 52. When the alarm condition is met, the microprocessor 31 transmits high level to the base electrode of the triode VT, the triode is conducted, the +12V power supply supplies power to the audible alarm 51 and the wireless signal transmitter 52, and the audible alarm and the wireless signal transmitter work. Wherein, the sounding alarm sounds to request the help of surrounding people; the wireless signal transmitter transmits a signal to the matched wireless signal receiving device, and the wireless signal receiving device sounds after receiving the signal to remind people (relatives and nursing staff) wearing the wireless signal receiving device to know that the rehabilitation trainers need help.

As a modification, the frame 10 is provided with a speed sensor 32, which is located near the roller 20 and detects the speed of the roller, and the speed sensor is connected to the microprocessor 31. During use of the walker, if the walker descends an inclined slope, the rehabilitation trainer disengages from the walker, at which time the pressure sensor 30 detects that the walker is not under pressure, but the distance values detected by the four distance sensors are the same, and therefore the alarm device does not act. This kind of condition is dangerous, and the rehabilitation training person breaks away from helps capable ware, probably falls down, and moreover, the help capable ware of quick displacement becomes the hazardous articles, for this reason, the utility model discloses add speedtransmitter 32, when speedtransmitter surpassed a definite value to the speed signal that microprocessor carried, this value was that the rehabilitation training person can not reach, and microprocessor orders about the alarm device action. The signals of the speed sensor and the pressure sensor are processed by corresponding filter amplifying circuits and voltage stabilizing diodes and then are transmitted to the microprocessor 31.

The microprocessor, the delay circuit, the alarm device, the power supply for supplying electric energy to the microprocessor and the alarm device, the filtering amplification circuit and the voltage stabilizing diode are all arranged in a control box, the control box is arranged on the frame, and the pressure sensor, the distance sensor and the speed sensor are connected with the corresponding filtering amplification circuit in the control box through signal lines.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. Walking aid with inclination detecting system, including frame (10) and setting at gyro wheel (20) of frame bottom, its characterized in that: the distance sensor and the pressure sensor are connected with the input end of a microprocessor (31), and the output end of the microprocessor is connected with an alarm device.

2. A walker provided with a grade detection system according to claim 1 wherein: the number of the distance sensors is four, and the orthographic projections of the four distance sensors on the horizontal ground are four corners of a square.

3. A walker provided with a grade detection system according to claim 1 wherein: a speed sensor (32) is arranged on the frame (10), the speed sensor is positioned near the roller (20), and the speed sensor is connected with a microprocessor (31).

4. A walker provided with a grade detection system according to claim 1 wherein: the alarm device comprises a sound alarm (51) and a wireless signal transmitter (52).

5. A walker provided with a grade detection system according to claim 1 wherein: each distance sensor is connected with the input end of the microprocessor (31) through a time delay circuit.