Electric vehicle passenger detection device
By setting switches and fixed-value resistors on the seat cushion of the electric vehicle, and using pressure thresholds and potential changes to judge the number of people on the electric vehicle, the problem of ineffective judgment of whether there are people or multiple people riding in the existing technology is solved, and higher detection accuracy and safety are achieved.
Patent Information
- Application Number
- CN202420782805.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The existing electric vehicle manned detection device cannot effectively determine whether someone or more people ride, and there are missed or mis-checked cases, especially for people with varying weight and single-person riding needs of shared electric vehicles.
By setting switches and fixed-value resistors on the electric vehicle seat cushion, using pressure thresholds and potential changes to determine whether people are riding, and by setting multiple switches with different fixed-value resistor values at different positions, we can determine whether people are riding by carrying multiple people.
This device can effectively reduce the situation of missed or missed inspections, accurately judge the number of people on electric vehicles, and improve safety, especially in single-person riding environments with shared electric vehicles.
Smart Images
Figure CN222704737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a passenger detection device for an electric vehicle. Background Art
[0002] During the promotion of electric vehicles, it is easy to accidentally turn the throttle and cause a flying accident, which brings great safety hazards to the riders. Existing electric vehicles will detect whether there are people sitting on the seat cushion and only connect the throttle circuit when someone is riding to ensure safety. The current existing detection scheme is to set a piezoresistive sensor on the seat cushion for detection. The detection principle is that when someone sits on the seat cushion, the resistance of the piezoresistive sensor will decrease, so as to judge whether someone is riding by the changing resistance value. However, this method will output different resistance values for people of different weights, and there will be missed detection or false detection for people who are too light or too heavy. In addition, shared electric vehicles can only be ridden by one person, and illegal carrying of people will bring serious safety hazards. Therefore, for the detection of electric vehicle passengers, it is necessary to determine whether someone is riding on the seat cushion and whether there are multiple people riding. However, the existing detection scheme is only to set a single long strip of piezoresistive sensor on the seat cushion of the electric vehicle for detection, which can only detect whether there are people riding, but cannot detect whether there are multiple people riding. Utility Model Content
[0003] The purpose of the utility model is to provide an electric vehicle passenger detection device, which can be set by setting a switch in conjunction with a fixed value resistor. When someone is riding, the switch is pressed and closed, and the control unit detects the potential change to determine that someone is riding. Since the potential value detected by the control unit is only related to the resistance value of the set fixed value resistor, and the resistance value of the fixed value resistor is a fixed value, it is possible to eliminate the interference caused by different human body weights, thereby reducing the occurrence of missed detection or false detection. At the same time, by setting a plurality of switches with different corresponding fixed value resistors at different positions on the electric vehicle seat, the number and position of the closed switches are determined by the determined potential value, thereby determining whether the electric vehicle is carrying multiple people.
[0004] In order to achieve the above-mentioned purpose, the utility model provides an electric vehicle passenger detection device, comprising:
[0005] Control unit;
[0006] at least one fixed value resistor, one end of which is connected to the control unit;
[0007] At least one switch is arranged on the seat cushion of the electric vehicle and is connected in series with at least one of the fixed value resistors, one end of the switch is connected to the other end of the corresponding fixed value resistor, and the other end of the switch is connected to the control unit, and the switch is provided with a pressure threshold;
[0008] The electric vehicle passenger detection device is configured such that when a person rides on the electric vehicle, the switch is pressed and closed, and the control unit detects a potential change.
[0009] Optionally, the switch is a membrane switch or a mechanical switch.
[0010] Optionally, the fixed value resistor is single, and the corresponding single switch is arranged along the length direction of the electric vehicle seat cushion.
[0011] Optionally, there are multiple fixed value resistors, and the multiple fixed value resistors are connected in parallel to the control unit. The corresponding multiple switches are arranged at intervals along the length direction of the electric vehicle seat cushion, and any one of the multiple switches is arranged along the width direction of the electric vehicle seat cushion.
[0012] Optionally, the resistance values of the multiple fixed-value resistors are all different.
[0013] Optionally, the electric vehicle passenger detection device further includes:
[0014] The on-off unit is connected to the control unit and is used to connect or disconnect the throttle circuit.
[0015] Optionally, the electric vehicle passenger detection device further includes:
[0016] The prompting unit is connected to the control unit and is used to give voice prompts to the driver.
[0017] The beneficial effect of the utility model is that by setting a switch in conjunction with a fixed resistor, when someone is riding, the switch is pressed and closed, and the control unit detects the potential change to determine that someone is riding. Since the potential value detected by the control unit is only related to the resistance value of the set fixed resistor, and the resistance value of the fixed resistor is a fixed value, it is possible to eliminate the interference caused by different human body weights, thereby reducing the occurrence of missed detection or false detection. At the same time, by setting a plurality of switches with different corresponding fixed resistor values at different positions of the electric vehicle seat, the number and position of the closed switches are determined by the determined potential value, thereby determining whether the electric vehicle is carrying multiple people.
[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of an electric vehicle passenger detection device shown in one embodiment of the utility model;
[0020] Figure 2This is a schematic structural diagram of an electric vehicle passenger detection device shown in another embodiment of the utility model;
[0021] In the figure: 1. Control unit; 2. Fixed value resistor; 3. Switch. DETAILED DESCRIPTION
[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0025] See also Figure 1 and Figure 2 , a preferred embodiment of the present application shows an electric vehicle passenger detection device comprising a control unit 11, at least one fixed value resistor 2 and at least one switch 3, one end of the fixed value resistor 2 is connected to the control unit 1. At least one switch 3 is arranged on the electric vehicle seat, and is connected in series with at least one fixed value resistor 2, one end of the switch 3 is connected to the other end of the corresponding fixed value resistor 2, and the other end of the switch 3 is connected to the control unit 1, and the switch 3 is provided with a pressure threshold. The electric vehicle passenger detection device is arranged so that when someone rides the electric vehicle, the switch 3 is pressed and closed, and the control unit 1 detects the potential change.
[0026] According to the scheme of the embodiment of the utility model, since the existing method of detection through piezoresistive sensors will output different resistance values for people of different weights, there will be cases of missed detection or false detection for people who are too light or too heavy. In addition, shared electric vehicles can only be ridden by one person, and illegal carrying of passengers will bring serious safety hazards. Therefore, for the detection of people on an electric vehicle, it is necessary to determine whether there is someone riding on the seat cushion, and also to determine whether there are multiple people riding. However, the existing detection scheme is only to set a single long strip of piezoresistive sensor on the seat cushion of the electric vehicle for detection, which can only detect whether there is someone riding, but cannot detect whether there are multiple people riding.
[0027] Therefore, the present application sets a switch 3 in conjunction with a fixed resistor 2. When someone is riding, since the switch 3 is set with a pressure threshold, as long as a person with a weight exceeding the threshold rides, the switch 3 will be pressed and closed, and then the control unit 1 detects a high potential to determine that someone is riding. Since the potential value detected by the control unit 1 is only related to the resistance value of the set fixed resistor 2, and the resistance value of the fixed resistor 2 is a fixed value, it is possible to eliminate the interference caused by unequal human weight, thereby reducing the occurrence of missed detection or false detection. At the same time, by setting a plurality of switches 3 with different corresponding fixed resistors 2 at different positions on the electric vehicle seat, and judging the number and position of the closed switches 3 by the determined potential value, it is possible to judge whether the electric vehicle is carrying multiple people.
[0028] The following is a detailed description with specific embodiments:
[0029] The switch 3 is a membrane switch or a mechanical switch. In the present embodiment, the switch 3 is a membrane switch, which is convenient for installation and laying on the electric vehicle seat. At the same time, the membrane switch has excellent performance, good conductivity, stable structure, and fast information transmission. Of course, the switch 3 of the present application can also be replaced by a traditional mechanical switch, which is not limited here. At the same time, in the present embodiment, the control unit 1 is an MCU chip, which is connected to the switch 3 and the fixed resistor 2 through the IO detection port.
[0030] See also Figure 1 In one embodiment, the fixed resistor 2 is single, and the single switch 3 corresponding to the fixed resistor 2 is in the shape of a long strip and laid along the length direction of the electric vehicle seat. This arrangement can ensure that no matter what the riding position and sitting posture of the person are, the single switch 3 can be triggered and closed, thereby detecting that someone is riding.
[0031] See also Figure 2In another embodiment, there are multiple fixed resistors 2, and multiple fixed resistors 2 are connected in parallel to the control unit 1. The corresponding multiple switches 3 are arranged at intervals along the length direction of the electric vehicle seat cushion. Any one of the multiple switches 3 is laid along the width direction of the electric vehicle seat cushion, and the resistance values of the multiple fixed resistors 2 are different. In order to detect whether there are multiple people riding, multiple spaced switches 3 can be set at the front, middle and back of the seat cushion respectively. When there is only one person riding, only the switch 3 set at the front or middle of the seat cushion will be triggered and closed; when there are multiple people riding illegally, most of the switches 3 or even all of the switches 3 will be triggered and closed. Since multiple fixed resistors 2 are connected in parallel and have different resistance values, the number and corresponding positions of the closed switches 3 can be judged according to the resistance value after parallel connection, so as to judge whether there are multiple people riding illegally, and the riding position and sitting posture of the person can also be judged accordingly.
[0032] The electric vehicle passenger detection device also includes a switch unit and a prompt unit. The switch unit is connected to the control unit 1 and is used to connect or disconnect the throttle circuit. The prompt unit is connected to the control unit 1 and is used to give voice reminders to the driver. When it is determined that someone is riding, the switch unit connects the throttle circuit; and when it is determined that multiple people are riding in violation of the regulations, the switch unit disconnects the throttle circuit. In addition, the prompt unit can give voice reminders such as "Do not carry passengers" or "Do not drive dangerously" when it is determined that multiple people are riding in violation of the regulations or the sitting posture of the person is relatively dangerous, so as to avoid danger during riding as much as possible.
[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. An electric vehicle passenger detection device, characterized in that: include: Control unit; at least one fixed value resistor, one end of which is connected to the control unit; At least one switch is arranged on the seat cushion of the electric vehicle and is connected in series with at least one of the fixed value resistors, one end of the switch is connected to the other end of the corresponding fixed value resistor, and the other end of the switch is connected to the control unit, and the switch is provided with a pressure threshold; The electric vehicle passenger detection device is configured such that when a person rides on the electric vehicle, the switch is pressed and closed, and the control unit detects a potential change.
2. The electric vehicle passenger detection device according to claim 1, characterized in that: The switch is a membrane switch or a mechanical switch.
3. The electric vehicle passenger detection device according to claim 1, characterized in that: The fixed value resistor is single, and the corresponding single switch is arranged along the length direction of the electric vehicle seat cushion.
4. The electric vehicle passenger detection device according to claim 1, characterized in that: There are multiple fixed value resistors, and the multiple fixed value resistors are connected to the control unit in parallel. The corresponding multiple switches are arranged at intervals along the length direction of the electric vehicle seat cushion, and any one of the multiple switches is arranged along the width direction of the electric vehicle seat cushion.
5. The electric vehicle passenger detection device according to claim 4, characterized in that: The resistance values of the plurality of fixed-value resistors are all different.
6. The electric vehicle passenger detection device according to claim 1, characterized in that: Also includes: The on-off unit is connected to the control unit and is used to connect or disconnect the throttle circuit.
7. The electric vehicle passenger detection device according to claim 1, characterized in that: Also includes: The prompting unit is connected to the control unit and is used to give voice prompts to the driver.