CN212409855U - Temperature measurement electronic scale - Google Patents

Abstract

The application provides a temperature measurement electronic scale includes: a scale body; the weighing sensor is arranged inside the scale body; the optical window is arranged on the scale body; when the temperature measuring electronic scale measures the temperature, the person to be measured is positioned above the optical window; the infrared temperature sensor is arranged below the optical window; the infrared temperature sensor determines the temperature of the person to be measured according to the received infrared radiation; and the main control chip is connected with the weighing sensor and the infrared temperature sensor. In the scheme, the temperature measurement electronic scale adopts the infrared temperature sensor to measure the temperature of a person to be measured, and can quickly obtain a temperature measurement result, so that the influence of the external environment and the scale body on the temperature measurement result is reduced. Meanwhile, the person to be measured and the infrared temperature sensor are separated through the optical window, so that the purposes of water prevention, dust prevention and the like are further achieved while infrared non-contact temperature measurement is achieved.

Description

Temperature measurement electronic scale

Technical Field

The application relates to the field of electronic scales, in particular to a temperature measurement electronic scale.

Background

The existing electronic scales with specific temperature measuring functions in the market generally adopt a contact temperature measuring mode. However, the contact temperature measurement method is easily affected by the ambient temperature, and particularly, when the ambient temperature is high or low, the temperature measurement result is greatly affected. In addition, the contact temperature measurement mode needs to wait for the heat of the person to be measured to be fully conducted to the temperature sensor, so that the waiting time of a user is long. That is to say, the contact temperature measurement mode adopted in the prior art has the problems of low accuracy of the temperature measurement result and slow reaction in the temperature measurement process.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a temperature measurement electronic scale for solve the technical problem that the accuracy of temperature measurement result is lower and the temperature measurement process reaction is slower.

In order to achieve the above purpose, the technical solutions provided in the embodiments of the present application are as follows:

the embodiment of the application provides a temperature measurement electronic scale, includes: a scale body; the weighing sensor is arranged inside the scale body; the optical window is arranged on the scale body; when the temperature measuring electronic scale measures the temperature, the person to be measured is positioned above the optical window; the infrared temperature sensor is arranged below the optical window; wherein the infrared radiation emitted by the person to be measured passes through the optical window to be received by the infrared temperature sensor, and the infrared temperature sensor determines the temperature of the person to be measured according to the received infrared radiation; and the main control chip is connected with the weighing sensor and the infrared temperature sensor. In the scheme, the infrared temperature sensor is adopted to measure the temperature of the person to be measured, so that the temperature measurement result can be quickly obtained, and the influence of the external environment and the scale body on the temperature measurement result is reduced when the temperature measurement time of the person to be measured is long. Meanwhile, the person to be measured and the infrared temperature sensor are separated through the optical window, so that the purposes of water prevention, dust prevention and the like are further achieved while infrared non-contact temperature measurement is achieved. Therefore, the scheme can improve the accuracy of the temperature measurement result and the reaction speed in the temperature measurement process, and meanwhile, the protection purpose is realized.

In an alternative embodiment of the present application, the optical window is a fresnel lens. In the above scheme, the Fresnel lens is used as the optical window, so that the infrared radiation emitted by a person to be measured can be collected on the infrared temperature sensor, and the accuracy of the temperature measurement result is improved.

In an alternative embodiment of the present application, the optical window is constructed of a material that is capable of transmitting infrared radiation. In the scheme, the optical window is made of materials capable of transmitting infrared radiation, so that the infrared radiance of the temperature measurement electronic scale can be increased, and the accuracy of a temperature measurement result is improved.

In an alternative embodiment of the present application, the scale body includes a load-bearing panel, and the person to be measured is located on a first surface of the load-bearing panel when the temperature measurement is performed; the optical window is disposed on a second side opposite the first side of the load bearing panel. In the above scheme, the optical window can be arranged on the second surface of the bearing panel, so that the person to be measured and the infrared temperature sensor are separated through the optical window, and the service life of the temperature measurement electronic scale is prolonged.

In an alternative embodiment of the present application, the optical window is a fresnel lens machined directly on the second face of the load bearing panel. In the above scheme, the Fresnel lens can be directly processed on the bearing panel, and at the moment, the optical window and the bearing panel are integrated, so that the waterproof performance of the temperature measuring electronic scale can be improved.

In an optional embodiment of the present application, an infrared antireflection film is plated on a side of the optical window away from the load-bearing panel and/or on a first surface of the load-bearing panel corresponding to the optical window. In the scheme, infrared antireflection film coating treatment can be performed on the bearing panel and the optical window so as to increase the infrared radiance of the temperature measurement electronic scale and improve the accuracy of a temperature measurement result.

In an optional embodiment of the present application, the scale body includes a bearing panel, and the person to be measured is located on a first surface of the bearing panel when performing temperature measurement; the optical window is embedded in the load-bearing panel. In the scheme, the optical window can be directly embedded into the bearing panel, so that the cost of the temperature measurement electronic scale is reduced.

In an alternative embodiment of the present application, the surface of the optical window is plated with an infrared antireflection film. In the scheme, the optical window can be subjected to infrared antireflection film coating treatment to increase the infrared radiance of the temperature measurement electronic scale, so that the accuracy of a temperature measurement result is improved.

In an alternative embodiment of the present application, the optical windows are at least 1. In the scheme, one or more optical windows can be arranged on the temperature measurement electronic scale according to actual conditions so as to improve the accuracy of temperature measurement results.

In an alternative embodiment of the present application, the thermometric electronic scale further comprises: and the fat measuring electrode slice is arranged on the surface of the scale body and is connected with the main control chip. In the scheme, the surface of the body of the temperature measuring electronic scale can be provided with a fat measuring electrode plate, so that the fat measuring function can be realized on the basis of weighing and temperature measuring.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a block diagram of an electronic temperature measuring scale according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of an optical port arrangement according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of another optical port arrangement provided in the embodiments of the present application;

FIG. 4 is a schematic diagram of another optical port arrangement provided in the embodiments of the present application;

fig. 5 is a schematic diagram of a scale body surface of an electronic temperature measuring scale according to an embodiment of the present disclosure.

Icon: 100-temperature measuring electronic scale; 101-a load cell; 102-an optical window; 103-infrared temperature sensor; 104-a main control chip; 105-a lipid-measuring electrode slice; 106-display screen.

Detailed Description

In the prior art, some weighing scales have the function of measuring the temperature of the sole of a foot, but mainly adopt a contact temperature measurement mode. There are certain disadvantages to this approach: firstly, the temperature reaction speed is slow, and a user needs to stand on a scale to wait for the heat of the sole to be sufficiently transferred to the temperature sensor, so that the waiting time of the user is longer; secondly, the key position can not be measured accurately, and the sole temperature generally uses the arch temperature to be the most accurate, but the arch is the indent inward, can't fully contact the temperature conduction position of balance face. Thirdly, the accuracy is low, and when ambient temperature was lower, the user stood on the balance the longer the time the sole temperature lost more, just so can't accurate measurement sole temperature, and the practicality is relatively poor.

Based on the analysis, the embodiment of the application provides a temperature measurement electronic scale, and this temperature measurement electronic scale adopts infrared temperature sensor to treat the person of measureing to carry out temperature measurement, can obtain temperature measurement result fast to reduce the long time of person of measureing temperature measurement, external environment and the influence of the balance body to temperature measurement result. Meanwhile, the person to be measured and the infrared temperature sensor are separated through the optical window, so that the purposes of water prevention, dust prevention and the like are further achieved while infrared non-contact temperature measurement is achieved. Therefore, the scheme can improve the accuracy of the temperature measurement result and the reaction speed in the temperature measurement process, and meanwhile, the protection purpose is realized.

The following describes the temperature measuring electronic scale provided in the embodiment of the present application in detail with reference to the drawings in the embodiment of the present application.

Referring to fig. 1, fig. 1 is a block diagram of a temperature measuring electronic scale according to an embodiment of the present disclosure, where the temperature measuring electronic scale 100 may include: the scale comprises a scale body, a weighing sensor 101, an optical window 102, an infrared temperature sensor 103 and a main control chip 104.

Wherein, the weighing sensor 101 is arranged inside the scale body; the optical window 102 is arranged on the scale body, and when the temperature measuring electronic scale 100 measures the temperature, the person to be measured is positioned above the optical window 102; the infrared temperature sensor 103 is arranged below the optical window, infrared radiation emitted by the person to be measured passes through the optical window 102 and is received by the infrared temperature sensor 103, and the infrared temperature sensor 103 determines the temperature of the person to be measured according to the received infrared radiation; the main control chip 104 is connected with the weighing sensor 101 and the infrared temperature sensor 103.

It is understood that fig. 1 does not show the positional relationship of the components in thermometric electronic scale 100. Moreover, the temperature measuring electronic scale 100 provided in the embodiments of the present application may be used for measuring the weight and temperature of a human body (for example, a weight scale) or measuring the weight and temperature of an object (for example, a kitchen scale).

Specifically, the principle of the infrared temperature sensor 103 for measuring temperature is as follows: any object has thermal radiation emitted to the outside as long as its temperature is above absolute zero (i.e., -273 c). The object radiates different energy and the wavelength of the radiated wave is different according to the temperature of the object. The heat radiation emitted by an object always includes infrared radiation, and the stronger electromagnetic wave in the heat radiation of the object is an infrared wave when the temperature of the object is below thousand ℃. Therefore, the infrared radiation of the object can be measured, and the surface temperature of the sole of the human body can be accurately measured.

An infrared temperature sensor 103 may be disposed below the optical window 102. When a human body is subjected to sole temperature measurement, the human body can stand on the temperature measuring electronic scale 100, the sole is located below the optical window 102, at this time, the infrared temperature sensor 103 is also located below the sole, infrared radiation emitted from the sole can be received by the infrared temperature sensor 103, and thus the infrared temperature sensor 103 can detect the sole temperature according to the infrared radiation emitted from the sole.

In addition, the temperature measuring electronic scale 100 provided by the embodiment of the application can also measure the weight of a human body. When the weight of a human body is measured, the human body can stand on the temperature measurement electronic scale 100 and be measured through the weighing sensor 101, and then the weight of the human body can be accurately determined. It should be noted that, the weighing cell 101 in the embodiment of the present application is not specifically limited, and may be a capacitive weighing cell, a resistance strain gauge weighing cell, a capacitive weighing cell, or the like, and those skilled in the art may appropriately select the weighing cell according to actual situations.

The weighing sensor 101 and the infrared temperature sensor 103 are both connected with the main control chip 104, and the main control chip 104 can realize multiple control functions. For example, the weighing sensor 101 and the infrared temperature sensor 103 may send the measurement results to the main control chip 104, and the main control chip 104 may store, process, and the like the measurement results. For another example, the main control chip 104 may control the temperature measuring electronic scale 100 to enter different measurement modes, where the measurement mode may be temperature measurement or weight measurement, and the measurement mode may also be temperature measurement and weight measurement simultaneously. The main control chip 104 controls the temperature measuring electronic scale 100 to enter different measuring modes, which may be controlled according to a stored program or according to a user instruction, and those skilled in the art can select the measuring modes appropriately according to actual situations.

As an embodiment, the material may be classified into a material capable of transmitting infrared radiation and a material incapable of transmitting infrared radiation, and the material capable of transmitting infrared radiation may be classified into a material having a superior effect of transmitting infrared radiation and a material having a poor effect of transmitting infrared radiation. Among them, the material with infrared transmission range close to 5-10 micron wavelength can be regarded as the material with better infrared radiation transmission effect, such as: sapphire, silicon wafers, and the like; and materials having poor infrared radiation transmission effects may include glass, acryl, and the like.

In this embodiment, the scale body may be made of one or more materials, and among the one or more materials, all of the materials may be materials with better infrared radiation transmission effect, all of the materials may be materials with poorer infrared radiation transmission effect, or a part of the materials may be materials with better infrared radiation transmission effect, and a part of the materials may be materials with poorer infrared radiation transmission effect. For example, the load-bearing panel of the scale body is made of glass or acrylic, and the optical window 102 is made of sapphire; or the bearing panel of the scale body can be made of sapphire, and other parts are made of acrylic, wherein the person to be measured is positioned on the first surface of the bearing panel when measuring the temperature.

It should be understood that the material composition of the scale body is not limited in the embodiments of the present application, and those skilled in the art can appropriately adjust the material composition of the scale body according to the function of the temperature-measuring electronic scale 100, the appearance requirement of the temperature-measuring electronic scale 100, and the like.

The scale bodies are made of different materials, and the arrangement mode of the optical window 102 on the temperature measuring electronic scale 100 provided by the embodiment of the present application is correspondingly different. The manner in which the optical window 102 is disposed is described in detail below.

For example, the optical window 102 provided in the embodiments of the present application may be a fresnel lens. The Fresnel lens (Fresnel lens)) is mostly a sheet formed by injecting and pressing polyolefin materials and is also made of glass, one surface of the lens is a smooth surface, the other surface of the lens is inscribed with concentric circles from small to large, and the texture of the Fresnel lens is designed according to the requirements of light interference and interference, relative sensitivity and receiving angle. The Fresnel lens can be equivalent to a convex lens of infrared rays and visible light, has a focusing function, and focuses infrared radiation emitted by a person to be measured on the infrared temperature sensor 103, so that the accuracy of a temperature measurement result is improved.

As another example, the optical window 102 provided in the embodiments of the present application may be an infrared transmitter. The infrared transmitter is made of a material with a good infrared radiation transmission effect, and can transmit most of infrared radiation emitted by a person to be measured to the infrared temperature sensor 103, so that the infrared radiance of the temperature measuring electronic scale 100 is increased, and the accuracy of a temperature measuring result is improved.

As an embodiment, the optical window 102 may be disposed on a second side opposite the first side of the load-bearing panel, i.e., the fresnel lens may be disposed on the second side of the load-bearing panel or the infrared transmitter may be disposed on the second side of the load-bearing panel.

As an implementation manner, please refer to fig. 2, fig. 2 is a schematic diagram of an optical light opening arrangement manner provided in an embodiment of the present application, and the optical window 102 is a fresnel lens directly processed on the second surface of the load-bearing panel.

The material that this kind of setting mode can be applicable to the bearing panel is the relatively poor material of transmission infrared radiation effect such as glass, can process fresnel lens in optical window's below to improve infrared transmissivity, increase temperature measurement accuracy.

Of course, the material of the bearing panel can be a material with better infrared radiation transmission effect, the whole bearing panel can be made of the material with better infrared radiation transmission effect, and the material with better infrared radiation transmission effect can be only arranged above the optical window.

In this arrangement, in order to further increase the infrared radiance of the electronic temperature measuring scale 100, an infrared antireflection film may be further coated on a side of the optical window 102 away from the bearing panel or a first surface of the bearing panel corresponding to the optical window. The infrared antireflection film can reduce or eliminate the reflected light from the optical surface, thereby increasing the amount of light transmitted through these elements and reducing or eliminating the stray light from the optical window 102.

It can be understood that when the scale body above the optical window is made of a material with a better infrared radiation transmission effect, the optical window 102 may not be additionally arranged.

It should be noted that the infrared antireflection film may be plated only on the side of the optical window 102 away from the load-bearing panel, may be plated only on the first surface of the load-bearing panel, or may be plated on both the side of the optical window 102 away from the load-bearing panel and the first surface of the load-bearing panel. In addition, when the infrared antireflection film is plated on the first surface of the bearing panel, the infrared antireflection film can be plated only on the first surface of the bearing panel corresponding to the optical window, and can also be plated on the whole bearing panel. The embodiments of the present application are not particularly limited to these examples.

As another embodiment, the optical window 102 may be embedded in the load-bearing panel of the scale body, i.e., the Fresnel lens may be embedded directly in the load-bearing panel or the infrared transmitter may be embedded directly in the load-bearing panel. Referring to fig. 3 and 4, fig. 3 and 4 are schematic views of another optical light port arrangement manner provided in the embodiment of the present application, fig. 3 shows that the fresnel lens is directly embedded in the load-bearing panel, and fig. 4 shows that the infrared transmitter is directly embedded in the load-bearing panel. The infrared transmitter may be made of a material with a good infrared radiation transmitting effect, such as sapphire or silicon chip.

The material that this kind of setting mode can be applicable to the bearing panel of the balance body is the material that the transmission infrared radiation effect is relatively poor, both can be that whole bearing panel comprises the material that the transmission infrared radiation effect is relatively poor, also can be that part bearing panel comprises the material that the transmission infrared radiation effect is relatively poor.

In this arrangement, in order to further increase the infrared radiance of the electronic temperature measuring scale 100, an infrared antireflection film may be further coated on the surface of the optical window 102. It is understood that the entire surface of the optical window 102 may be coated with an infrared antireflection film, or both surfaces of the optical window may be coated with an infrared antireflection film.

In the scheme, the optical window can be arranged on the second surface of the bearing panel, so that a person to be measured is separated from the infrared temperature sensor through the optical window, and the service life of the temperature measuring electronic scale is prolonged; or the optical window can be directly embedded into the bearing panel so as to reduce the cost of the temperature measuring electronic scale.

In the embodiment of the present application, the number of the optical windows 102 is not particularly limited, and may be one or more. For example, only one optical window 102 may be disposed on the kitchen scale, and the optical window 102 may be disposed in the middle of the kitchen scale, so that the cost of the kitchen scale may be reduced on the basis of ensuring that the temperature of the item on which the user is placed is measured. For another example, two optical windows 102 may be provided on the weighing scale, and the two optical windows 102 may be symmetrically provided at both ends of the weighing scale, so that both soles of the feet can cover the optical windows 102 when the user stands on the weighing scale.

Further, temperature measuring electronic scale 100 provided in the embodiment of the present application may further include: and the fat measuring electrode slice 105 is arranged on the surface of the scale body and is connected with the main control chip 104.

Specifically, the lipid-measuring electrode plate may be disposed on the surface of the scale body, and may be an Indium Tin Oxide (ITO) electrode plate, a stainless steel electrode plate, graphite, a conductive fabric, or other conductive materials. In one embodiment, temperature-measuring electronic scale 100 may include two or four fat-measuring electrode pads 105, and optical window 102 may be disposed outside fat-measuring electrode pads 105, or may be disposed in the middle of one or more fat-measuring electrode pads 105 (for example, a hole is formed in the middle of an electrode pad), which is not limited in this embodiment.

Similar to the control of the above-mentioned main control chip 104 symmetric retransmission sensor 101 and the infrared temperature sensor 103, the fat measuring electrode sheet 105 may send the measurement result to the main control chip 104, and the main control chip 104 may store, process, and the like the measurement result. Or, the main control chip 104 may control the temperature measuring electronic scale 100 to enter different measurement modes, where the measurement mode may be to perform fat content measurement alone, and the measurement mode may also be to select one or more of fat measurement, weight measurement, and temperature measurement.

Further, temperature measuring electronic scale 100 provided in the embodiment of the present application may further include: and a wireless data transmission module. The wireless data transmission module may be connected to the main control chip 104 and the mobile terminal, and is configured to transmit data sent by the main control chip 104 to the mobile terminal.

Specifically, the temperature measuring electronic scale 100 may be an intelligent electronic scale, and is in communication connection with a mobile terminal through a wireless data transmission module, so as to implement intelligent functions such as data synchronization, data statistics, data analysis, and the like. The wireless data transmission module and the mobile terminal can communicate through bluetooth, wireless internet access (Wifi) and other modes, and the embodiment of the application does not specifically limit the modes.

The mobile terminal can be a terminal device such as a computer and a mobile phone, and mobile phone software (APP) corresponding to the temperature measurement electronic scale 100 can be installed on the mobile terminal, so that when a user uses the temperature measurement electronic scale 100 to measure temperature, weight and the like, the mobile terminal can receive a measurement result sent by the temperature measurement electronic scale 100 in real time. After the user finishes the measurement, the APP on the mobile terminal can be opened, and the current data, the historical data and other contents of the user can be checked.

Further, temperature measuring electronic scale 100 provided in the embodiment of the present application may further include: and the display screen 106 is arranged on the surface of the scale body and is connected with the main control chip 104. The main control chip 104 can output the measurement result of the user to the user through the display screen, that is, the user can view the data of the weight, the temperature, and the like of the user through the display screen 106.

Referring to fig. 5, fig. 5 is a schematic diagram of a scale body surface of an electronic temperature measuring scale according to an embodiment of the present disclosure, in which a circular display screen 106 is disposed on an upper half portion of the scale body surface, and an optical window 102 and two lipid measuring electrode pads 105 are disposed at two ends of the scale body surface.

Further, the infrared temperature sensor 103 in the temperature measuring electronic scale 100 provided in the embodiment of the present application may be a digital sensor, and at this time, the infrared temperature sensor 103 may directly send the temperature of the body to be measured to the main control chip 104.

Further, the infrared temperature sensor 103 in the temperature measuring electronic scale 100 provided in the embodiment of the present application may be an analog sensor, and at this time, the temperature measuring electronic scale 100 may further include a signal processing circuit. The main control chip 104 is connected with the infrared temperature sensor 103 through a signal processing circuit, and is configured to amplify and filter the analog signal output by the infrared temperature sensor 103, so that the main control chip 104 determines the temperature of the object to be measured according to the processed signal.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A temperature measuring electronic scale is characterized by comprising:

a scale body;

the weighing sensor is arranged inside the scale body;

the optical window is arranged on the scale body; when the temperature measuring electronic scale measures the temperature, the person to be measured is positioned above the optical window;

the infrared temperature sensor is arranged below the optical window; wherein the infrared radiation emitted by the person to be measured passes through the optical window to be received by the infrared temperature sensor, and the infrared temperature sensor determines the temperature of the person to be measured according to the received infrared radiation; and

and the main control chip is connected with the weighing sensor and the infrared temperature sensor.

2. The thermometric electronic scale according to claim 1, wherein the optical window is a fresnel lens.

3. The thermometric electronic scale of claim 1, wherein the optical window is constructed of a material capable of transmitting infrared radiation.

4. The thermometric electronic scale according to any one of claims 1-3, wherein said scale body includes a load-bearing panel, said subject being located on a first side of said load-bearing panel when taking a temperature measurement;

the optical window is disposed on a second side opposite the first side of the load bearing panel.

5. The thermometric electronic scale of claim 4, wherein the optical window is a Fresnel lens machined directly on the second face of the load-bearing panel.

6. The thermometric electronic scale according to claim 4, wherein an infrared antireflection film is plated on a side of the optical window away from the load-bearing panel and/or on a first surface of the load-bearing panel corresponding to the optical window.

7. The thermometric electronic scale according to any one of claims 1-3, wherein said scale body includes a load-bearing face plate, said subject being located on a first face of said load-bearing face plate when performing temperature measurement;

the optical window is embedded in the load-bearing panel.

8. The electronic temperature measuring scale according to claim 7, wherein the surface of the optical window is plated with an infrared antireflection film.

9. Thermometric electronic scale according to any one of claims 1-3, wherein the number of optical windows is at least 1.

10. The thermometric electronic scale according to any one of claims 1-3, further comprising:

and the fat measuring electrode slice is arranged on the surface of the scale body and is connected with the main control chip.

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