Instant rice rehydration time detection device and detection method

Abstract

The invention belongs to the technical field of instant rice, and particularly relates to an instant rice rehydration time detection device and a detection method, the instant rice rehydration time detection device comprises an elasticity measurement module and a control module; the elasticity measurement module comprises a detection table, a pressure applying mechanism and a distance measuring sensor; the upper end face of the detection table is of a plane structure and arranged at the lower end of the pressure applying mechanism so as to provide a to-be-detected platform for instant rice. The pressing mechanism is of an up-down moving structure, and a pressing plate is arranged at the lower end of the pressing mechanism so that to-be-detected instant rice can be pressed on the detection table through the pressing plate. The distance measuring sensor is arranged above the pressure applying mechanism so as to measure the distance change of the pressure plate; the control module is electrically connected with the pressure applying mechanism and the distance measuring sensor so as to control the pressure applying mechanism to move up and down and control the distance measuring sensor to receive data signals. The invention aims to solve the uncertain problems that whether the instant rice is half-cooked or not cannot be judged by judging whether the instant rice has a white core or not, and whether the rehydrated instant rice is qualified or not is judged only by sense organs.

Description

Technical Field

[0001] The invention belongs to the technical field of instant rice, and in particular relates to a detection device and a detection method for the rehydration time of instant rice. Background Art

[0002] In recent years, with the improvement of people's living standards, the acceleration of work pace and the change of consumption concepts, convenient foods that are easy to eat, easy to carry, safe and hygienic are more likely to be favored by consumers. Although instant noodles, which are also convenient foods, are still the most popular and popular, their disadvantages of high-temperature frying pose health risks and cannot meet the needs of many consumers who like rice. Instant rice is a new nutritious convenience food that is more in line with the national eating habits. Before eating, it only needs to be simply rehydrated (rehydration refers to the method of reabsorbing water from dry food to restore it to a fresh or dehydrated state) to obtain a food with flavor, taste and appearance similar to ordinary rice. The key indicator for evaluating the quality of instant rice is the rehydration time, that is, the time required for the sensory qualities such as appearance structure, palatability and smell of the instant rice to return to the original state after rehydration; the shorter the rehydration time, the better the water absorption of the instant rice, and the shorter the waiting time for consumption. On the contrary, it means that the instant rice has poor water absorption, the longer the waiting time for consumption, and the worse the quality.

[0003] It is generally believed that if there is no white core inside the instant rice grains, the instant rice has been fully rehydrated and completely restored to edible rice without being undercooked. The time taken for the instant rice to be rehydrated from the beginning to the time when there is no white core is taken as the rehydration time. The national standard GB / T 31323-2014 stipulates that whether the instant rice after rehydration is qualified is determined by human senses. However, during the research process, it was found that after rehydration, when the instant rice has no white core, it has not been completely restored to the taste of rice, and there is still a problem of being undercooked; and due to individual differences, it is uncertain to judge whether the instant rice is qualified after rehydration based solely on human senses, and the judgment conclusions are also different.

[0004] After repeated experiments and tests, it was found that when the rice grains of instant rice enter a state without elasticity during the rehydration process, they are not undercooked and meet the sensory requirements of rehydrated instant rice specified in GB / T 31323-2014. Therefore, a device is needed to detect the elasticity of rehydrated rice grains, which can detect the elasticity of rice grains after a certain period of rehydration, so as to determine whether the instant rice has reached a completely rehydrated state and determine the rehydration time of the instant rice. This can solve the problem of being unable to judge whether the instant rice is undercooked by the presence or absence of a white core, and the uncertainty of judging whether the rehydrated instant rice is qualified only by sensory organs. Summary of the invention

[0005] The present application proposes a detection device and method for the rehydration time of instant rice, which can detect whether the rice grains are elastic after rehydration, thereby judging whether the instant rice is fully rehydrated, whether it is undercooked, and determining the rehydration time of the instant rice. This solves the problem that it is impossible to judge whether the instant rice is undercooked by the presence or absence of a white core, and the uncertainty of judging whether the instant rice is qualified after rehydration only by sensory organs. The specific invention content is as follows:

[0006] A device for detecting the rehydration time of instant rice, comprising an elasticity measurement module and a control module;

[0007] The elasticity measurement module includes a detection platform, a pressure mechanism and a distance sensor; the upper end surface of the detection platform is a plane structure, which is arranged at the lower end of the pressure mechanism to provide a flat detection area for the instant rice; the pressure mechanism is an up-and-down movable structure, and a pressure plate is arranged at the lower end of the pressure mechanism to press the rice grains of the instant rice to be tested onto the detection platform through the pressure plate; the distance sensor is arranged above the pressure mechanism to measure the distance change of the pressure plate;

[0008] The control module is electrically connected to the pressure mechanism and the distance measuring sensor respectively, so as to control the pressure mechanism to move up and down, and control the distance measuring sensor and receive data signals.

[0009] Furthermore, the detection device also includes a heating module;

[0010] The heating module is located on one side of the elastic measuring module, and includes a container for containing water and the instant rice, a heater located at the bottom of the container, a temperature measuring device placed in the container, and a drainer arranged above the container;

[0011] The heater and the temperature detector are both electrically connected to the control module;

[0012] The heating module is used to heat the instant rice and water to required temperatures, and to facilitate taking the rice grains of the instant rice out of the container and draining the water.

[0013] Furthermore, the heating module also includes a vertically arranged first vertical rod and a first cross rod vertically connected to the first vertical rod; a first driving unit is provided at the connection between the first cross rod and the first vertical rod to drive the first cross rod to move up and down along the first vertical rod; the first driving unit is electrically connected to the control module.

[0014] Furthermore, the drainer is fixedly connected to the first cross bar vertically downward; a plurality of drain holes with a hole diameter smaller than the diameter of the rice grains of the instant rice are provided at the bottom of the drainer.

[0015] Furthermore, the detection table includes a flat plate placed on the upper end of the detection table, and the flat plate is used to place rice grains of the instant rice; the detection table is provided with grooves at positions on both sides of the flat plate.

[0016] Furthermore, the elasticity measurement module further includes a second vertical rod arranged vertically and a second cross rod vertically connected to the second vertical rod; a second driving part is provided at the connection between the second cross rod and the second vertical rod so as to drive the second cross rod to move up and down along the second vertical rod; the second driving part is electrically connected to the control module;

[0017] The pressure mechanism further comprises two brackets vertically connected downwardly to the second crossbar; the lower end of the bracket has a frame; the distance between the two brackets is the same as the distance between the two grooves, so that after the two brackets are lowered, the frames are correspondingly extended into the two grooves;

[0018] The pressing plate is horizontally placed on the bottom of the two frames, and a first gap is provided between the upper end surface of the pressing plate and the top of the frame.

[0019] Furthermore, the second cross bar is located between the two brackets and has a weight suspended by a rope; a second gap is provided between the lower end surface of the weight and the upper end surface of the pressure plate; and the first gap and the groove depth are both greater than the second gap.

[0020] A method for detecting the rehydration time of instant rice, the method comprising:

[0021] S1. Take 500 g of clean water and add it into the container. Control the heater to heat the clean water through the control module, and control the temperature of the clean water to be kept within the range of 90°C±1°C through the temperature detector and the heater.

[0022] S2, take 100g of the instant rice and put it into the container to form a rice-water mixed solution, and start recording time t, and perform steps S3 to S8 every 30 seconds;

[0023] S3, controlling the first driving unit to drive the first crossbar to move downward through the control module, so that the drainer extends into the rice-water mixed solution; controlling the first driving unit to drive the first crossbar to move upward through the control module, so that the drainer moves out of the rice-water mixed solution; after the drainer drains the water, taking out a grain of rice from the drainer and placing it in the middle of the flat plate;

[0024] S4, controlling the second driving unit to drive the second crossbar to move downward through the control module; using the gravity of the pressing plate and the weight to press the rice grains and keep it pressed for 1 second;

[0025] S5, controlling the distance measuring sensor to collect the distance between the distance measuring sensor and the pressing plate through the control module to obtain a distance value D_1;

[0026] S6, controlling the second driving unit through the control module to drive the second crossbar to move upward, driving the weight to leave the flat plate, and keeping the pressing plate still pressed on the rice grains;

[0027] S7, controlling the distance measuring sensor to collect the distance between the distance measuring sensor and the pressing plate through the control module to obtain a distance value D_2;

[0028] S8. Compare the distance values ​​of the two measurements. If D_1>D_2, continue with the next test; if D_1=D_2, record the time t of this measurement as the rehydration time T, and the test ends.

[0029] The beneficial effects of the present invention are that the detection device is provided with a detection table to provide a flat detection area for the instant rice; the pressure mechanism can compress the instant rice to detect whether the instant rice can rebound; the distance sensor can accurately collect the rebound distance of the instant rice after compression, and use it to determine whether the instant rice is completely rehydrated; the control module can automatically control the pressure mechanism and the distance sensor, making the operation more precise and facilitating the acquisition of more realistic detection data. In general, the instant rice rehydration time detection device and detection method can solve the uncertainty problem of being unable to judge whether the instant rice is undercooked by the presence or absence of a white core, and judging whether the instant rice is qualified after rehydration only by sensory organs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative work.

[0031] Figure 1 For the convenience of the overall structure diagram of the rice rehydration time detection device;

[0032] Figure 2 For the convenience of the rice rehydration time detection device overall structure working state diagram;

[0033] Figure 3 For the convenience of rice rehydration time detection device overall structure working status diagram Figure 2 ;

[0034] Figure 4 For the convenience of the rice rehydration time detection device support structure schematic front view and left view;

[0035] In the figure: A. shell; 1. elasticity measurement module; 101. detection table; 1011. flat plate; 1012. groove; 102. pressure mechanism; 1021. pressure plate; 1022. bracket; 1023. first gap; 1024. rope; 1025. weight; 1026. second gap; 1027. frame; 103. distance sensor; 104. second vertical rod; 105. second horizontal rod; 106. second driving unit; 2. heating module; 201. container; 202. heater; 203. drainer; 2031. drain hole; 204. first vertical rod; 205. first horizontal rod; 206. first driving unit. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] 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 limiting 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.

[0038] It should be noted that when an element is referred to as being "fixed to", "placed on", "disposed with", "provided with", "set to", or "connected to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0039] 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The present invention provides a device for detecting the rehydration time of instant rice. Figure 1 to Figure 4 , including an elasticity measurement module 1 and a control module (not shown in the figure);

[0041] The elasticity measurement module 1 includes a detection platform 101, a pressure mechanism 102 and a distance sensor 103; the upper end surface of the detection platform 101 is a plane structure, which is arranged at the lower end of the pressure mechanism 102, so as to provide a flat detection area for the instant rice; the pressure mechanism 102 is an up-and-down movable structure, and a pressing plate 1021 is arranged at the lower end thereof, so that the rice grains of the instant rice to be tested are pressed onto the detection platform 101 through the pressing plate 1021; the distance sensor 103 is arranged above the pressure mechanism 102, so as to measure the distance change of the pressing plate 1021;

[0042] The control module is electrically connected to the pressure mechanism 102 and the distance sensor 103 respectively, so as to control the pressure mechanism 102 to move up and down, and control the distance sensor 103 and receive data signals.

[0043] It should be noted that the control module is preferably in the form of a PLC (PLC is the abbreviation of Programmable Logic Controller) and can be arranged on the periphery of the detection device; the control module can also be a circuit including at least one processor, or a circuit including at least one single-chip microcomputer, or a combination of multiple circuits or chips, as long as the corresponding functions can be realized; it is understandable that for those skilled in the art, the control circuit can also be a common circuit composed of amplifiers, comparators, triodes, MOS tubes, etc. to realize the corresponding functions in a purely hardware manner;

[0044] In addition, the control module can control the start and stop of the corresponding components in the detection device by pressing buttons, and receive the transmitted data, and perform corresponding analysis and processing on the data, and store the processing results in the internal storage space for subsequent query; a display device can also be set in the control module to display data such as detection time and detection results, so as to facilitate real-time observation by the detection personnel.

[0045] It should be noted that the ranging sensor preferably adopts an infrared ranging sensor; the infrared ranging sensor uses the principle that the intensity of reflection of an infrared signal at different distances from an object is also different to perform specific detection of the object, and can be used in conjunction with the above-mentioned control module to measure the specific difference of the pressure plate; it is understandable that those skilled in the art can also use other methods (such as laser ranging sensors) using known conditions and technologies to measure the distance change of the pressure plate, as long as the results obtained are accurate and stable.

[0046] It should be noted that a shell A is preferably provided outside the detection device; the shell A provides dust-proof protection for the detection device, and the bottom of the shell A can provide installation and fixing support for the detection device.

[0047] In a specific implementation, the detection device has a detection table 101 that can provide a flat detection area for the instant rice; a pressure mechanism 102 that can compress the instant rice to detect whether the instant rice can rebound; a distance sensor 103 that can accurately collect the rebound distance of the instant rice after compression, and use it to determine whether the instant rice is completely rehydrated; a control module that can automatically control the pressure mechanism 102 and the distance sensor 103 makes the operation more precise and facilitates obtaining more realistic detection data. In general, the instant rice rehydration time detection device and detection method can solve the uncertainty problem of being unable to judge whether the instant rice is undercooked by the presence or absence of a white core, and judging whether the instant rice is qualified after rehydration only by sensory organs.

[0048] In the embodiments provided by the present invention, Figure 1 As shown, the detection device also includes a heating module 2;

[0049] The heating module 2 is located on one side of the elasticity measuring module 1, and includes a container 201 for containing water and the instant rice, a heater 202 located at the bottom of the container 201, a temperature measuring device placed in the container 201, and a drainer 203 arranged above the container 201;

[0050] The heater 202 and the temperature detector are both electrically connected to the control module;

[0051] The heating module 2 is used to heat the instant rice and water to a required temperature, and to facilitate taking the rice grains of the instant rice out of the container 201 and draining the water.

[0052] It should be noted that the container 201 preferably adopts a glass beaker structure.

[0053] It should be noted that the heater 202 is placed below the container 201 and preferably adopts a heating wire structure.

[0054] It should be noted that the temperature detector preferably adopts a temperature sensor structure.

[0055] It should be noted that the thermometer and the heater 202 are electrically connected to the control module. The control module determines whether the current temperature is the set temperature based on the data transmitted by the thermometer, and controls the start and stop of the heater 202 based on the judgment result, so that the temperature in the container 201 can be controlled within the set range.

[0056] In a specific implementation, the heating module 2 can keep the instant rice to be tested within the test temperature range in the container 201, providing accurate and convenient temperature conditions for the detection process.

[0057] In one embodiment, if Figure 1 As shown, the heating module 2 also includes a vertically arranged first vertical rod 204 and a first cross rod 205 vertically connected to the first vertical rod 204; a first driving unit 206 is provided at the connection between the first cross rod 205 and the first vertical rod 204 to drive the first cross rod 205 to move up and down along the first vertical rod 204; the first driving unit 206 is electrically connected to the control module.

[0058] It should be noted that the first vertical rod 204 is preferably fixedly connected to the bottom of the housing A by screws.

[0059] It should be noted that the first vertical rod 204 preferably adopts a rack structure.

[0060] It should be noted that the first driving part 206 preferably adopts a stepping motor structure, and a gear that can mesh with the rack is connected to the output end of the first driving part 206; the operation of the first driving part 206 drives the gear to rotate, and the first driving part 206 and the gear move up and down along the first vertical rod 204 together.

[0061] It should be noted that the first cross bar 205 is preferably fixedly connected to the gear and can move up and down along the first vertical bar 204 together with the gear.

[0062] In a specific implementation, the first vertical rod 204 , the first horizontal rod 205 and the first driving unit 206 can realize the automatic upward and downward movement of the first horizontal rod 205 through the control module, making the detection work more convenient and accurate.

[0063] In the embodiment provided by the present invention, the drainer 203 is fixedly connected to the first cross bar 205 vertically downward; a plurality of drain holes 2031 with a hole diameter smaller than the diameter of the rice grains of the instant rice are provided at the bottom of the drainer 203.

[0064] It should be noted that the drainer 203 is preferably fixedly connected to the first cross bar 205 via a connecting rod, which can be fixed by welding or screws; the drainer 203 can be made into a colander-like structure or a box-like structure. Regardless of which structure is adopted, a drain hole 2031 should be provided at the bottom.

[0065] In a specific implementation, the drainer 203 can move up and down with the first cross bar 205, and the water in the rice grains can be drained through the drainer 203, which can save time and avoid errors caused by manual operation during the detection process.

[0066] In one embodiment, if Figure 1 As shown, the testing platform 101 includes a flat plate 1011 placed on the upper end of the testing platform 101 , and the flat plate 1011 is used to place the rice grains of the instant rice; the testing platform 101 is provided with grooves 1012 at positions on both sides of the flat plate 1011 .

[0067] It should be noted that the detection platform 101 is fixed to the bottom of the housing A, preferably by welding or screws.

[0068] It should be noted that the flat plate 1011 is preferably a glass flat plate 1011 , which is movably placed on the upper end surface of the detection platform 101 , and the upper and lower end surfaces of the flat plate 1011 are ensured to be flat.

[0069] It should be noted that the groove 1012 is preferably opened on the detection platform 101 by cutting.

[0070] In a specific implementation, the testing platform 101 provides a stable and reliable base for the testing work; the platform provides a flat testing area for the testing work, and the glass material is used to facilitate cleaning during the testing process.

[0071] In the embodiment provided by the present invention, Figure 1 As shown, the elasticity measurement module 1 further includes a second vertical rod 104 arranged vertically and a second cross rod 105 vertically connected to the second vertical rod 104; a second driving unit 106 is provided at the connection between the second cross rod 105 and the second vertical rod 104, so as to drive the second cross rod 105 to move up and down along the second vertical rod 104; the second driving unit 106 is electrically connected to the control module;

[0072] The pressure mechanism 102 further includes two brackets 1022 vertically connected to the second crossbar 105 downward; the lower end of the bracket 1022 has a frame 1027; the distance between the two brackets 1022 is the same as the distance between the two grooves 1012, so that after the two brackets 1022 are lowered, the frame 1027 can extend into the two grooves 1012 accordingly;

[0073] The pressing plate 1021 is horizontally placed at the bottom of the two frames 1027 ; and a first gap 1023 is defined between the upper end surface of the pressing plate 1021 and the top of the frame 1027 .

[0074] It should be noted that the second vertical rod 104 is preferably fixedly connected to the bottom of the housing A by screws.

[0075] It should be noted that the second vertical rod 104 preferably adopts a rack structure.

[0076] It should be noted that the second driving unit 106 preferably adopts a stepping motor structure, and a gear that can mesh with the rack is connected to the output end of the second driving unit 106; the second driving unit 106 drives the gear to rotate, and the second driving unit 106 and the gear move up and down along the second vertical rod 104 together.

[0077] It should be noted that the second cross bar 105 is preferably fixedly connected to the gear, and can move up and down along the second vertical bar 104 along with the gear.

[0078] It should be noted that the bracket 1022 is preferably connected to the second crossbar 105 by welding or screw fixation.

[0079] It should be noted that if Figure 2 As shown, the frame 1027 and the bracket 1022 are made as one body, and a pressure plate 1021 is placed at the bottom of the frame 1027; the width of the two frames 1027 is the same as or smaller than the width of the corresponding groove 1012.

[0080] It should be noted that the pressing plate 1021 and the flat plate 1011 should be configured in multiple sets, which can be used in rotation during the detection process to facilitate cleaning after contact with rice grains.

[0081] It should be noted that, after the frame 1027 descends, it extends into the groove 1012 , and at this time, the pressing plate 1021 stays on the flat plate 1011 .

[0082] In a specific implementation, the second vertical rod 104, the second horizontal rod 105 and the second driving unit 106 can realize the second horizontal rod 105 driving the pressure mechanism 102 to automatically move up and down through the control module, making the detection work more convenient and accurate; the frame 1027 provides a loading position for the pressure plate 1021; the existence of the first gap 1023 and the groove 1012 provides a descending space for the frame 1027, and can realize that the pressure plate 1021 stays on the flat plate 1011, and the frame 1027 can continue to move downward.

[0083] In one embodiment, if Figure 1 As shown, the second cross bar 105 is located between the two brackets 1022 and is suspended with a weight 1025 via a rope 1024; a second gap 1026 is provided between the lower end surface of the weight 1025 and the upper end surface of the pressure plate 1021; the depths of the first gap 1023 and the groove 1012 are both greater than the second gap 1026.

[0084] It should be noted that the mass of the weight 1025 is preferably between 250g and 300g. In order to balance the pressure, the two weights 1025 are preferably arranged symmetrically; the rope 1024 is preferably a steel wire rope structure.

[0085] It should be noted that if Figure 3As shown, during the test, when the pressure mechanism 102 moves downward, the bracket 1022, the weight 1025 and the pressing plate 1021 move downward together with the second cross bar 105; the pressing plate 1021 first contacts the rice grains to be tested and presses the rice grains on the flat plate 1011 while continuing to move downward and stops moving downward; as the bracket 1022 continues to move downward, the first gap 1023 and the second gap 1026 gradually decrease; since the depth of the groove 1012 and the first gap 1023 are both greater than the second gap 1026, the weight 1025 contacts the pressing plate 1021 first, and the bracket 1022 continues to move downward until the weight 1025 is completely pressed on the pressing plate 1021 to complete the pressure process on the rice grains. After that, the bracket 1022 stops moving downward, and the control module sends a distance measurement instruction to the distance measurement sensor 103 to collect the distance of the pressing plate 1021. At this time, the state of the detection device is as shown in FIG. Figure 3 shown.

[0086] It should be noted that if Figure 4 As shown, after the pressure on the rice grains is completed, the bracket 1022 moves up, and the weight 1025 is lifted first. When the weight 1025 leaves the pressing plate 1021, the pressure on the rice grains disappears (the pressing plate 1021 is light and has no obvious effect on the rebound of the rice grains); if the rice grains have the ability to rebound, they will lift the pressing plate 1021 for a certain distance. At this time, the control module again sends a distance measurement instruction to the distance measurement sensor 103 to collect the distance of the pressing plate 1021; then, the pressing plate 1021 leaves the flat plate 1011 and the rice grains to be measured under the drive of the continuous rise of the bracket 1022, and a detection is completed. At this time, the state of the detection device is as follows: Figure 4 shown.

[0087] In a specific implementation, the depth of the first gap 1023 and the groove 1012 are both set to be greater than the second gap 1026, so that after the pressure plate 1021 and the weight 1025 apply pressure to the rice grains, the weight 1025 rises before the pressure plate 1021. At this time, the distance sensor 103 can detect whether the pressure plate 1021 rebounds.

[0088] A method for detecting the rehydration time of instant rice, the method comprising:

[0089] S1, taking 500g of clean water and adding it into the container 201, controlling the heater 202 to heat the clean water through the control module, and controlling the temperature of the clean water to be maintained within the range of 90°C±1°C through the thermometer and the heater 202;

[0090] S2, taking 100g of the instant rice grains and putting them into the container 201 to form a rice-water mixed solution, and starting to record the time t, and executing steps S3 to S8 every 30 seconds;

[0091] S3, controlling the first driving unit 206 to drive the first crossbar 205 to move downward through the control module, so that the drainer 203 extends into the rice-water mixed solution; controlling the first driving unit 206 to drive the first crossbar 205 to move upward through the control module, so that the drainer 203 moves out of the rice-water mixed solution; after the drainer 203 drains the water, taking out a grain of rice from the drainer 203 and placing it in the middle of the flat plate 1011;

[0092] S4, controlling the second driving unit 106 to drive the second crossbar 105 to move downward through the control module; using the gravity of the pressing plate 1021 and the weight 1025 to press the rice grains and hold for 1 second;

[0093] S5, controlling the distance measuring sensor 103 through the control module to collect the distance between the distance measuring sensor 103 and the pressing plate 1021 to obtain a distance value D_1;

[0094] S6, controlling the second driving unit 106 through the control module to drive the second crossbar 105 to move upward, driving the weight 1025 to leave the flat plate 1011, but keeping the pressing plate 1021 still pressed on the rice grains;

[0095] S7, controlling the distance measuring sensor 103 through the control module to collect the distance between the distance measuring sensor 103 and the pressing plate 1021 to obtain a distance value D_2;

[0096] S8. Compare the two measured distance values. If D_1>D_2, it means that the rice grains have rebound phenomenon, and continue the next detection; if D_1=D_2, it means that the rice grains have no rebound phenomenon, and the time t of this measurement is recorded as the rehydration time T, and the detection ends.

[0097] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0098] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for detecting the rehydration time of instant rice, characterized in that: It includes an elasticity measurement module and a control module; The elasticity measurement module includes a detection platform, a pressure mechanism and a distance sensor; the upper end surface of the detection platform is a plane structure, which is arranged at the lower end of the pressure mechanism to provide a flat detection area for the instant rice; the pressure mechanism is an up-and-down movable structure, and a pressure plate is arranged at the lower end of the pressure mechanism to press the rice grains of the instant rice to be tested onto the detection platform through the pressure plate; the distance sensor is arranged above the pressure mechanism to measure the distance change of the pressure plate; The control module is electrically connected to the pressure mechanism and the distance measuring sensor respectively, so as to control the pressure mechanism to move up and down, and control the distance measuring sensor and receive data signals.

2. The instant rice rehydration time detection device according to claim 1, characterized in that: Also included is a heating module; The heating module is located on one side of the elastic measurement module, and includes a container for containing water and the instant rice, a heater located at the bottom of the container, a temperature measuring device placed in the container, and a drainer arranged above the container; The heater and the temperature detector are both electrically connected to the control module; The heating module is used to heat the instant rice and water to required temperatures, and to facilitate taking the rice grains of the instant rice out of the container and draining the water.

3. The instant rice rehydration time detection device according to claim 2, characterized in that: The heating module also includes a vertically arranged first vertical rod and a first cross rod vertically connected to the first vertical rod; a first driving unit is provided at the connection between the first cross rod and the first vertical rod to drive the first cross rod to move up and down along the first vertical rod; the first driving unit is electrically connected to the control module.

4. The instant rice rehydration time detection device according to claim 3, characterized in that: The drainer is fixedly connected to the first cross bar vertically downward; a plurality of drain holes with a hole diameter smaller than the diameter of the rice grains of the instant rice are arranged at the bottom of the drainer.

5. The instant rice rehydration time detection device according to claim 1, characterized in that: The detection platform comprises a flat plate placed on the upper end of the detection platform, and the flat plate is used to place the rice grains of the instant rice; the detection platform is provided with grooves at positions on both sides of the flat plate.

6. The instant rice rehydration time detection device according to claim 5, characterized in that: The elasticity measurement module further includes a second vertical rod arranged vertically and a second cross rod vertically connected to the second vertical rod; a second driving part is provided at the connection between the second cross rod and the second vertical rod so as to drive the second cross rod to move up and down along the second vertical rod; the second driving part is electrically connected to the control module; The pressure mechanism further comprises two brackets vertically connected downwardly to the second crossbar; the lower end of the bracket has a frame; the distance between the two brackets is the same as the distance between the two grooves, so that after the two brackets are lowered, the frames are correspondingly extended into the two grooves; The pressing plate is horizontally placed on the bottom of the two frames, and a first gap is provided between the upper end surface of the pressing plate and the top of the frame.

7. The instant rice rehydration time detection device according to claim 6, characterized in that: The second cross bar is located between the two brackets and has a weight suspended thereon via a rope; a second gap is provided between the lower end surface of the weight and the upper end surface of the pressure plate; the first gap and the groove depth are both greater than the second gap.

8. A method for detecting the rehydration time of instant rice, characterized in that: The instant rice rehydration time detection device applied to any one of claims 1 to 7, the method comprising: S1. Take 500 g of clean water and add it into the container. Control the heater to heat the clean water through the control module, and control the temperature of the clean water to be kept within the range of 90°C±1°C through the thermometer and the heater. S2, take 100g of the instant rice and put it into the container to form a rice-water mixed solution, and start recording time t, and perform steps S3 to S8 every 30 seconds; S3, controlling the first driving unit to drive the first crossbar to move downward through the control module, so that the drainer extends into the rice-water mixed solution; controlling the first driving unit to drive the first crossbar to move upward through the control module, so that the drainer moves out of the rice-water mixed solution; after the drainer drains the water, taking out a grain of rice from the drainer and placing it in the middle of the flat plate; S4, controlling the second driving unit to drive the second crossbar to move downward through the control module; using the gravity of the pressing plate and the weight to press the rice grains and keep it pressed for 1 second; S5, controlling the distance measuring sensor to collect the distance between the distance measuring sensor and the pressing plate through the control module to obtain a distance value D1; S6, controlling the second driving unit through the control module to drive the second crossbar to move upward, driving the weight to leave the flat plate, and keeping the pressing plate still pressed on the rice grains; S7, controlling the distance measuring sensor to collect the distance between the distance measuring sensor and the pressing plate through the control module to obtain a distance value D2; S8. Compare the distance values ​​of the two measurements. If D1>D2, continue with the next test; if D1=D2, record the time t of this measurement as the rehydration time T, and the test ends.

Images