CN-224225238-U - Human body induction identification circuit and device applied to rollator and rollator

Abstract

The utility model relates to the field of human body induction recognition, and provides a human body induction recognition circuit, a device and a walker applied to the walker, wherein an analog circuit is constructed by a plug-in connector, a voltage dividing module and a filtering module instead of a digital circuit, and signal interference is reduced by the filtering module, so that a switch module or a switch tube is not needed, whether the walker is contacted is judged by '0' or '1' of voltage, and further compared with a digital circuit commonly used in the field, the effect that the voltage of an output point changes along with the change of grip strength is realized, and a hardware basis is provided for clearly distinguishing false touch from normal grip and even other grip states.

Inventors

• CHEN JING
• WANG YINGZHI
• SHI FENG
• PAN HAILONG
• CHEN SHAOFENG

Assignees

• 浙江捷昌线性驱动科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250522

Claims (8)

1. 1. Be applied to human response identification circuit of rollator, characterized by that includes: The electric scooter comprises a plug-in component, a voltage dividing module and a filtering module, wherein the plug-in component is connected with the voltage dividing module, the filtering module is connected with the voltage dividing node of the plug-in component and the voltage dividing module, the output end of the voltage dividing module is used for being connected with a controller, and the plug-in component is used for being connected with a handle of the electric scooter.
2. 2. The human body induction identification circuit applied to a rollator according to claim 1, wherein the voltage dividing module comprises a pull-up resistor R54, a detection resistor R56 and a first power supply, the first power supply is connected with the connector and the detection resistor R56 to form a voltage dividing detection loop after passing through the pull-up resistor R54, and the other end of the detection resistor R56 is an output end of the voltage dividing module.
3. 3. The human body induction identification circuit for a rollator according to claim 1, wherein the filter module comprises a second power supply, an electrostatic protection diode ESD4, a filter capacitor C45, a rectifier diode D1 and a rectifier diode D2, one end of the filter capacitor C45, one end of the electrostatic protection diode ESD4 and a cathode of the rectifier diode D1 are connected with a voltage division node of the voltage division module, the other end of the filter capacitor C is grounded, a cathode of the rectifier diode D2 is connected with the second power supply, and an anode of the rectifier diode D2 is connected with the voltage division node.
4. 4. The human body sensing and recognition circuit for a rollator of claim 2, wherein the first power source is a 3.3V power source.
5. 5. A body sensing and recognition circuit for a rollator according to claim 3, wherein the second power source is a 5V power source.
6. 6. The human body induction recognition device applied to the rollator comprises a handle and a controller, and is characterized by further comprising the human body induction recognition circuit applied to the rollator, which is connected with the handle and the controller and is used for the rollator according to any one of claims 1-5.
7. 7. The human body sensing and identifying device for a rollator of claim 6, wherein the grip is a conductive silicone sleeve or a conductive silicone grip.
8. 8. Rollator comprising a vehicle body, characterized in that it further comprises a human body induction recognition device applied to the rollator according to claim 6 or 7.

Description

Human body induction identification circuit and device applied to rollator and rollator Technical Field The utility model relates to the field of human body induction recognition, in particular to a human body induction recognition circuit and device applied to a rollator and the rollator. Background Because of the specific use object and range, the safety requirements on the rollator are extremely high, the system is required to be started after a user completely stands still and holds the grip well when the system is started, and the rollator can be stopped rapidly when in emergency stop. In order to judge whether a user holds the grip, the prior art mostly adopts a sensor or a conductive contact as a key means for identification, but because of the simplicity of a detection means and the limitation of a detection mode, the detection circuit of the prior art is usually designed into a digital circuit, and whether the grip is gripped or not is judged through the high and low levels of an output end, and whether the grip is in contact or not can only be judged usually, namely, whether the grip is in contact or not is judged, and the incorrect contact and normal grip are difficult to identify, and if the user does not completely stand still, the user can easily touch the grip by mistake, so that the incorrect judgment is easy to start, and the use safety is affected. Disclosure of utility model The utility model provides a human body induction recognition circuit, a device and a rollator applied to the rollator, which are used for judging whether the grip is gripped by the high and low levels of the output end in the prior art and are difficult to avoid false triggering, wherein an analog circuit is constructed instead of a digital circuit through a plug-in connector, a voltage dividing module and a filtering module, and signal interference is reduced through the filtering module, so that a switch module or a switch tube is not needed any more, whether the grip is contacted is judged by no more 0 'or 1' of voltage, and further compared with a digital circuit commonly used in the art, the effect that the voltage of the output point changes along with the change of grip strength is realized, and a hardware basis is provided for clearly distinguishing false touch from normal grip and even other grip states. The following is a technical scheme of the utility model. Human body induction recognition circuit applied to rollator comprises: The electric scooter comprises a plug-in component, a voltage dividing module and a filtering module, wherein the plug-in component is connected with the voltage dividing module, the filtering module is connected with the voltage dividing node of the plug-in component and the voltage dividing module, the output end of the voltage dividing module is used for being connected with a controller, and the plug-in component is used for being connected with a handle of the electric scooter. As a possible implementation manner, the voltage dividing module includes a pull-up resistor R54, a detection resistor R56, and a first power supply, where after passing through the pull-up resistor R54, the first power supply is connected to the connector and the detection resistor R56 to form a voltage dividing detection loop, and the other end of the detection resistor R56 is an output end of the voltage dividing module. As a possible implementation manner, the filtering module comprises a second power supply, an electrostatic protection diode ESD4, a filtering capacitor C45, a rectifying diode D1 and a rectifying diode D2, wherein one end of the filtering capacitor C45, one end of the electrostatic protection diode ESD4 and a cathode of the rectifying diode D1 are connected to a voltage division node of the voltage division module, the other end of the filtering capacitor is grounded, a cathode of the rectifying diode D2 is connected to the second power supply, and an anode of the filtering capacitor C45 is connected to the voltage division node. As a possible implementation manner, the first power supply is a 3.3V power supply. As a possible implementation manner, the second power supply is a 5V power supply. The utility model also provides a human body induction recognition device applied to the rollator, which comprises a handle and a controller, and further comprises any human body induction recognition circuit connected with the handle and the controller and applied to the rollator. As a possible implementation, the grip is a conductive silicone sleeve or a conductive silicone grip. The utility model also provides a rollator comprising a vehicle body and a human body induction recognition device applied to the rollator. The beneficial effects of the utility model include: An analog detection loop is constructed through the plug-in connector, the voltage dividing module and the filtering module, the output voltage is continuously changed along with the grip strength (but not the 0/1 level of th