School backpacks with a weight determination unit

Abstract

Schoolbag (1), with a weight determination unit for determining the load weight of a loaded schoolbag (1) and / or the load level of a user, comprising: a sensor for determining the load weight in a schoolbag (1), at least one display unit for displaying the load weight and / or the load level and a data processing unit (2) for processing the data provided by the weight sensor and for activating the display unit depending on the determined load weight and / or load level.

Description

[0001] The present invention relates to a school bag with a weight determination unit for determining the load weight of a loaded school bag and / or a load level of a user.

[0002] Children and adolescents often carry school bags that weigh more than they can handle. This can have long-term negative health effects, particularly on spinal development and posture. Experts and health insurance companies recommend that the weight of a school bag should not exceed 10-12% of body weight. However, in practice, there is no easy way to quickly check and monitor the weight of the bag. Therefore, there is a need for a user-friendly and effective solution that detects and prevents school bag overload early on.

[0003] The object of the present invention is therefore to solve the problems known from the prior art. In particular, a solution is to be provided that enables simple and reliable verification of the weight of a school bag.

[0004] The problem is solved by a school bag having the features of the independent claims. Advantageous or preferred embodiments are each subject of a corresponding dependent claim.

[0005] A school bag is proposed with a weight determination unit for determining the load weight of a loaded school bag and / or the load level of a user. The weight determination unit comprises a sensor for determining the load weight in a school bag. Furthermore, the weight determination unit comprises at least one display unit for displaying the load weight and / or the load level. The weight determination unit has a data processing unit for processing the data provided by the weight sensor and for activating the display unit depending on the determined load weight and / or load level.

[0006] It is also advantageous if the sensor is a weight sensor, a load cell, a force sensor, or a pressure sensor. Using a weight sensor, a load cell, a force sensor, or a pressure sensor enables precise and reliable measurement of the weight of the school bag. These sensors can be compactly integrated into the school bag or installed in the carrying straps or the base without compromising handling. Furthermore, the measured weight can be transmitted directly to a display unit or digital interface, providing the user with immediate feedback and allowing early prevention of overloading.

[0007] It is also advantageous if the weight determination unit includes a scale with a rigid weighing plate that supports the load and acts on the sensor. This ensures a direct, precise, and even force transfer to the sensor, increasing the accuracy of the weight measurement.

[0008] It is advantageous if the school bag includes a rigid base to support the scale and a rigid weighing plate. This ensures stable and even force transmission to the sensor and increases the accuracy of the weight measurement.

[0009] It is also advantageous if the display unit includes at least one optical signaling device, in particular at least one LED. This allows the user to easily determine the load level of the school bag at a glance. It is particularly advantageous if the display unit is attached to the outside of the school bag, which further increases visibility for the user.

[0010] It is also advantageous if the data processing unit is configured to activate the at least one display unit, in particular the at least one LED, when the measured value of the load weight is above a certain limit. Preferably, the limit is predetermined and stored in the data processing unit. This allows the limit to be individually adapted to a user.

[0011] Particular advantages are achieved if the display unit comprises a first LED and a second LED, and the data processing unit is configured to activate the first LED when the measured weight value is below the specified limit and the second LED when the measured weight value is above the specified limit. This allows a user to see at a glance whether the weight is below or above the limit. The automatic activation of the corresponding LED by the data processing unit ensures simple and efficient weight control.

[0012] It also has advantages if the first LED is a green LED.

[0013] Furthermore, it is advantageous if the second LED is a red LED.

[0014] It's particularly advantageous if the green LED is activated when the pressure sensor's limit is exceeded during normal use. Green is intuitively understood as a signal for a non-critical weight. This facilitates quick detection of the charge level and increases user-friendliness.

[0015] Furthermore, it is advantageous if the red LED is activated when the pressure sensor's limit is exceeded during intended use. Red is intuitively perceived as a warning signal for an overweight condition. This facilitates rapid detection of overload and promotes timely weight adjustment.

[0016] It is also advantageous if the limit value is predetermined by the data processing unit based on the user's body weight, whereby the user's body weight can be entered into the data processing unit. This allows the permissible load limit to be individually adjusted. Preferably, the user's body weight can be entered into the data processing unit, enabling precise and personalized weight control.

[0017] Using an Arduino as the data processing unit offers particular advantages. Arduino platforms are cost-effective, versatile, and easy to integrate into existing systems. This allows for efficient processing and control of sensor data, while simultaneously allowing for easy adaptation and expansion.

[0018] Further advantages of the invention are described in the following exemplary embodiment. It shows schematically: Fig. 1 a front view of a school bag with a weight determination unit.

[0019] Fig.1 shows a front view of a school bag 1 with a weight determination unit. The school bag 1 comprises a data processing unit 2. The data processing unit 2 is preferably arranged inside the school bag 1 so that it is protected from external influences. Particularly preferably, the data processing unit 2 is positioned in a pocket of the school bag 1. This protects it from external influences, but also allows access by a user. As a result, the user can, for example, adjust the limit value in the data processing unit 2. The school bag 1 has a scale 3. A sensor (not shown) for determining the load weight is integrated into the scale 3. The scale 3 comprises a rigid weighing plate 4. The rigid weighing plate 4 is preferably arranged such that the load weight acts evenly on the scale 3. Furthermore, the school bag 1 comprises a rigid base 5.The rigid base 5 can advantageously be placed on a flat surface. This allows the school bag 1 to be placed down stably without tipping over, and it also increases measurement accuracy. The school bag 1 comprises a first LED 6, in particular a green LED. The first LED 6 is preferably arranged such that it is visible to a user from the outside. The school bag 1 also has a second LED 7, in particular a red LED. It is particularly advantageous if the second LED 7 is also visible to a user from the outside. This allows a user to estimate the load level of the school bag 1 at a glance. The first LED 6 and the second LED 7 are connected to the data processing unit 2 via an electrical line.Furthermore, the scale 3, in particular the sensor, is connected to the data processing unit 2 in such a way that the sensor can transmit information to the data processing unit 2. A limit value can be stored in the data processing unit 2. During intended use, the scale 3 measures the weight of the loaded school bag 1 and transmits the measured value to the data processing unit 2. The data processing unit 2 compares the measured value with the stored limit value. If the limit value is undershot, the first LED 6 is activated. If the limit value is exceeded, the second LED 7 is activated. List of reference symbols 1 school bag 2 Data processing unit 3 scales 4 rigid weighing plate 5 rigid floor 6 first LED 7 second LED

Claims

[1] School bag (1) with a weight determination unit for determining a load weight of a loaded school bag (1) and / or a load level of a user, comprising: a sensor for determining the load weight in a school bag (1), at least one display unit for displaying the load weight and / or the load level and a data processing unit (2) for processing the data provided by the weight sensor and for activating the display unit depending on the determined load weight and / or load level. [2] School bag according to the preceding claim, characterized by that the sensor is a weight sensor, a load cell, a force sensor, or a pressure sensor. [3] School bag according to one of the preceding claims, characterized by that the weight determination unit comprises a scale (3) with a rigid weighing plate (4) which receives the load weight and acts on the sensor. [4] School bag according to one of the preceding claims, characterized by that the school bag (1) comprises a rigid base (5) for supporting the scales (3) and rigid weighing plate (4). [5] School bag according to one of the preceding claims, characterized by that the display unit comprises at least one optical signaling device, in particular at least one LED. [6] School bag according to one of the preceding claims, characterized by that the data processing unit (2) is designed to activate the at least one display unit, in particular the at least one LED, when the measured value of the load weight is above a certain limit value, wherein the limit value is preferably predetermined and stored in the data processing unit (2). [7] School bag according to one of the preceding claims, characterized byin that the display unit comprises a first LED (6) and a second LED (7) and the data processing unit (2) is designed to activate the first LED (6) when the measured value of the weight is below the specific limit value and to activate the second LED (7) when the measured value of the weight is above the specific limit value. [8] School bag according to one of the preceding claims, characterized by that the first LED (6) is a green LED. [9] School bag according to one of the preceding claims, characterized by that the second LED (7) is a red LED. [10] School bag according to one of the preceding claims, characterized by that the green LED is activated when the limit value of the pressure sensor is exceeded during normal use. [11] School bag according to one of the preceding claims, characterized bythat the red LED is activated when the limit value of the pressure sensor is exceeded during intended use. [12] School bag according to one of the preceding claims, characterized by that the limit value is predetermined by the data processing unit (2) as a function of a body weight of the user, wherein the body weight of the user can be input into the data processing unit (2). [13] School bag according to one of the preceding claims, characterized by that the data processing unit (2) is an Arduino.

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