Olfaction testing device for police dogs

Abstract

The utility model discloses an olfactory test device for police dogs, which is characterized in that olfactory boxes are arranged on a main gas guide pipe communicated with an odor sample box at intervals in a communicated manner, and the odor emitted by an odor sample is freely diffused into the plurality of olfactory boxes at different distances through standing; the condition that the smell is distorted due to the fact that part of smell molecules are filtered out by a filtering membrane does not exist, the smell is only different in concentration in each smell sample box, and the smell diffusion effect is close to the smell diffusion effect in the environment after the smell samples are covered / hidden in a real scene; the method has good reducibility on smell diffusion in a real scene, and can effectively solve the problem of poor reliability in the current dog smell ability test; besides, the olfactory ability of the dogs can be graded according to the distance of the dogs perceiving the smell, so that quantification of the olfactory ability is realized, the purposes of the dogs can be reasonably distributed according to the olfactory ability, and the conditions of training failure and waste of manpower and material resources caused by relatively poor olfactory ability foundation subsequently are avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of other equipment used in animal husbandry, and specifically relates to an olfactory testing device for police dogs. Background Technology

[0002] Working dogs are specially trained dogs that assist humans in completing specific tasks. There are many types of working dogs with a wide range of uses, including guide dogs, herding dogs, and police dogs. Police dogs are specially trained dogs used for investigation and crime solving. Their sense of smell is one of the most important police capabilities. Because individual dogs have different olfactory abilities, and even the same individual may have varying abilities to detect different odors—for example, some police dogs can detect the smell of explosives / drugs from a distance, while others need to be very close—it is necessary to test the olfactory abilities of dogs when selecting them for police work, especially for specialized dogs that rely heavily on their sense of smell, such as search and rescue dogs, drug detection dogs, and bomb detection dogs. Dogs with a good initial sense of smell are selected so that they can be trained to develop a superior sense of smell, avoiding situations where training fails due to a poor initial sense of smell, thus saving manpower and resources.

[0003] For a long time, the testing and evaluation of police dogs' olfactory abilities both domestically and internationally have mainly relied on the following methods: 1) Subjective evaluation by police dog technicians. This method not only requires a high level of professional competence from the police dog technicians, but also has a strong subjective element, resulting in poor accuracy and reliability of the evaluation results. 2) Food search and observation method. This method is limited by the type and quantity of food and lacks a unified evaluation standard, also resulting in poor accuracy and reliability of the evaluation results. 3) Reaction judgment method. This method assesses olfactory abilities by observing the police dog's expression and nerve reactions after smelling a stimulating olfactory source. Although this method is highly specialized, it requires special equipment and the cooperation of the dog, making it difficult to promote. For example, the system for testing animal olfactory sensitivity disclosed in Chinese patent CN102726319A requires the dog to enter a fixed cage device and keep its mouth in the receiving slot during the test. Due to the numerous problems with the aforementioned methods, other testing devices have emerged in this field. For example, Chinese patent CN106973817A discloses a testing device for the sniffer ability of police dogs. This device connects multiple sniffer test baskets circumferentially via pipes outside a mounting platform. Each sniffer test basket includes a vertically connected odor sample box and a sniffing cup. Multiple layers of filter membranes are installed between the odor sample box and the sniffing cup. During use, a suction device at the mounting platform generates suction on the sniffer test baskets through pipes, causing the odor emitted from the odor sample in the lower odor sample box to pass through the filter membrane and enter the sniffing cup for the dog to sniff. The device simulates the diffusion of odors at different distances by varying the number of filter membrane layers in the test basket, and assesses a dog's olfactory ability based on the distance it can sniff. Although the device is simple in structure and easy to implement, it mainly simulates odor diffusion at different distances by actively ventilating and adjusting the number of filter membrane layers. However, due to differences in the material of the filter membrane, one or more odor molecules emitted by the odor sample may be completely filtered out, resulting in a deviation between the odor in the smelling cup and the odor actually emitted by the odor sample. Therefore, this test device is prone to odor transmission distortion, and the accuracy and reliability of the test results still need to be improved. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide an olfactory testing device for police dogs, which solves the technical problem of poor reliability in current dog olfactory ability testing, and achieves the effect of improving the accuracy and reliability of the test.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A police dog olfactory testing device includes an odor sample box with an opening at the top and a lid for holding odor samples. A main air tube is horizontally arranged outside the odor sample box, with one end connected to the odor sample box and the other end closed. Multiple secondary air tubes are arranged horizontally along the length of the main air tube, with one end connected to the main air tube and the other end connected to a sniffing box. The sniffing box has an opening on one side and a lid for allowing the dog to sniff the diffused odor of the odor sample.

[0007] Furthermore, the opening of the smelling box is located at the top, and the bottom of the smelling box contains odor-absorbing cotton.

[0008] Furthermore, the lid of the smelling box opens and closes by sliding laterally.

[0009] Furthermore, a main valve is provided at the connection point between the main air tube and the odor sample box.

[0010] Furthermore, a secondary valve is provided at the connection point between the secondary air delivery tube and the olfactory box.

[0011] Furthermore, the sniffing box has a through hole on one side wall, and the auxiliary air tube is inserted into the through hole to communicate with the sniffing box. The auxiliary air tube and the through hole are slidably sealed to allow the sniffing box to be disassembled and separated from the auxiliary air tube. The sniffing box is equipped with a gate at the through hole. The gate is used to automatically close the through hole after the sniffing box is separated from the auxiliary air tube, so as to disassemble and transfer the sniffing box for testing.

[0012] Furthermore, multiple main air tubes are horizontally connected to the outside of the odor sample box at the same vertical position, and each main air tube is connected to a olfactory box via a secondary air tube.

[0013] Furthermore, a vertical platform is provided at the bottom of the odor sample box. The platform is used to hold the odor sample, and the height of the connection between the main gas tube and the odor sample box corresponds to the height of the platform.

[0014] Furthermore, a thermometer is installed inside the main ventilator to detect the ambient temperature at which the odor diffuses.

[0015] Furthermore, the odor sample box, main air tube, secondary air tube, and olfaction box are all made of stainless steel. An exhaust fan is also connected to the outside of the odor sample box to remove the internal odor after the test.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The olfactory testing device for police dogs described in this invention features olfactory boxes spaced apart on a main airway connected to an odor sample box. By allowing the odor sample to remain stationary, the odor emitted by the sample diffuses freely into multiple olfactory boxes at varying distances. This eliminates the distortion caused by filtering out odor molecules through a filter membrane; the odor in each sample box varies only in intensity. The odor diffusion effect closely resembles the effect of odor samples being masked / hidden in a real-world environment. It provides excellent reproduction of odor diffusion in real-world scenarios, effectively addressing the issue of poor reliability in current canine olfactory ability testing. Furthermore, it allows for rating a dog's olfactory ability based on the distance at which it perceives the odor, quantifying olfactory capabilities. This enables the rational allocation of tasks based on olfactory abilities, preventing training failures and wasted resources due to poor initial olfactory skills. Attached Figure Description

[0018] Figure 1 This is a top view schematic diagram of the olfactory testing device for police dogs described in Embodiment 1;

[0019] Figure 2 This is a three-dimensional schematic diagram of the odor sample box structure described in Example 1;

[0020] Figure 3 This is a schematic diagram showing the connection between the secondary air delivery tube and the olfactory box as described in Embodiment 1;

[0021] Figure 4 This is a schematic diagram of the separated state of the auxiliary air delivery tube and the olfactory box as described in Example 2;

[0022] The components include: 1. Odor sample box; 2. First box cover; 3. Main air tube; 4. Secondary air tube; 5. Smell box; 6. Secondary box cover; 7. Odor absorbent cotton; 8. Main valve; 9. Secondary valve; 10. Connecting hole; 11. Through hole; 12. Gate; 13. Placement platform; 14. Thermometer; 15. Ventilation opening. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1:

[0025] Please see Figure 1A olfactory testing device for police dogs includes an odor sample box 1 with an opening on the top surface and a first lid 2 at the opening for holding odor samples. A main air tube 3 is horizontally arranged outside the odor sample box 1. One end of the main air tube 3 is connected to the odor sample box 1 and the other end is closed. Multiple secondary air tubes 4 are arranged horizontally along the length of the main air tube 3. One end of the secondary air tubes 4 is connected to the main air tube 3 and the other end is connected to a sniffing box 5. The sniffing box 5 has an opening on one side and a second lid 6 at the opening for the dog to sniff the diffused odor of the odor sample. In this embodiment, both the odor sample box 1 and the sniffing box 5 are square. In practice, they can also be round.

[0026] The olfactory testing device for police dogs described in this utility model is used by placing it in a constant temperature chamber to simulate ambient temperature. The first lid 2 is opened, and a certain amount of odor sample is placed in the odor sample box 1. The first lid 2 is then slowly closed. The odor sample diffuses naturally in the main airway 3 and enters the olfactory box 5 through the secondary airway 4. The olfactory box 5, located at different distances from the odor sample box 1, exhibits a near-stronger and far-weaker effect, similar to the effect of odor samples being masked / hidden in a real-world environment. After a certain diffusion time, such as five minutes, the dog is led to the olfactory testing device. The second lid 6 of the olfactory box 5 furthest from the odor sample box 1 is opened first, allowing the dog to bring its nose close to or probe into the olfactory box 5 to sniff. The dog's reaction to the odor in the olfactory box 5 is used to test whether it has perceived the odor. If it has perceived the odor, the test stops. If it has not perceived the odor, the olfactory box 5 closer to the odor sample box 1 is opened, allowing the dog to sniff again, until the dog is found to have perceived the odor. The smelling box 5 was opened and sniffed. Based on the test results, the dog's olfactory ability level for the odor sample was assessed. In this embodiment, there are four smelling boxes 5 connected to the main trachea 3. The distance between the smelling box 5 that detected the odor and the odor sample box 1, from farthest to closest, was assessed as Grade A, Grade B, Grade C, and Grade D. After the test, the odor residue in the olfactory testing device and the constant temperature room was removed using a ventilation system. Then, the remaining dogs were tested sequentially with the same ambient temperature, the same odor sample, the same waiting time, and the same opening sequence to measure the olfactory ability level of each dog for the same odor. The odor sample could be changed, and the ambient temperature and waiting time adjusted accordingly to test the dog's olfactory ability for multiple odors. Finally, the dog's olfactory ability could be comprehensively assessed based on this. During implementation, the dogs could be classified according to the test results. For example, dogs with a particularly strong olfactory ability for explosives could be designated as bomb-sniffing dogs, dogs with a particularly strong olfactory ability for drugs could be designated as drug-sniffing dogs, and dogs with a good overall olfactory ability could be designated as regular police dogs.

[0027] The olfactory testing device for police dogs described in this utility model consists of olfactory boxes 5 spaced apart on the main airway 3 connected to the odor sample box 1. By allowing the odor sample in the odor sample box 1 to remain stationary, the odor emitted by the sample diffuses freely into multiple olfactory boxes 5 at different distances. Compared to existing devices that reduce odor concentration through a filter membrane, this device avoids the odor distortion caused by the filter membrane removing some odor molecules. The odor in the olfactory boxes 5 at different distances from the odor sample box 1 only differs in intensity, and the odor diffusion effect closely resembles the effect of odor diffusion in a real-world environment after the odor sample is masked / hidden. This provides good reproduction of odor diffusion in real-world scenarios, improving the reliability and accuracy of the test. This utility model effectively solves the problem of poor reliability in current canine olfactory ability testing. Furthermore, using this olfactory testing device, the canine's olfactory ability can be rated based on the distance at which it perceives the odor, quantifying its capabilities. This allows for the rational allocation of tasks to each dog based on their olfactory abilities, avoiding subsequent training failures and wasted resources due to poor olfactory foundations.

[0028] Please see Figure 3 The opening of the smelling box 5 is located on the top surface, and the smelling box 5 has an odor-absorbing cotton 7 on the bottom surface inside. In this way, the odor emitted by the odor sample in the odor sample box 1 enters the smelling box 5 through the main air tube 3 and the secondary air tube 4. Part of it is suspended in the air, and part of it is settled in the odor-absorbing cotton 7, so that the distribution and emission effect of the odor is closer to the real situation, which is conducive to improving the reliability and accuracy of the test.

[0029] Please see Figure 3 The second lid 6 of the sniffing box 5 is opened and closed by sliding laterally. In this embodiment, the opening of the sniffing box 5 extends to one side in the horizontal direction, and horizontal sliding grooves (not shown in the figure) are formed on the two opposite surfaces of the opening. The second lid 6 is made of glass, and the two sides of the second lid 6 are respectively located in the horizontal sliding grooves on both sides and slide in cooperation. In this way, compared with flipping the second lid 6 and lifting the second lid 6 to open the sniffing box 5, the second lid 6 of the sniffing box 5 is opened and closed by sliding laterally, which helps to reduce the disturbance of the odor inside the sniffing box 5 by the opening operation, and avoids a large change in the odor distribution inside the sniffing box 5 before the dog sniffs, which is different from the real scene. This helps to improve the reliability and accuracy of the test.

[0030] Please see Figure 1 A main valve 8 is provided at the connection point between the main air tube 3 and the odor sample box 1. In this way, after waiting for a certain period of time for diffusion, the main valve 8 can be closed to prevent the odor in the odor sample box 1 from continuing to diffuse to the olfactory box 5 through the main air tube 3 and the secondary air tube 4. This will ensure that the odor concentration in each olfactory box 5 does not change before the lid is opened during the test, which is beneficial for controlling the variable of diffusion time and thus improving the accuracy and reliability of the test.

[0031] Please see Figure 1 and Figure 3 A secondary valve 9 is provided at the connection point between the secondary air guide tube 4 and the olfaction box 5. In this way, after waiting for a certain period of diffusion, the secondary valve 9 can be closed to prevent the odor in each olfaction box 5 from diffusing and exchanging with each other through the main air guide tube 3 and the secondary air guide tube 4. This will ensure that the odor concentration in each olfaction box 5 does not change before the lid is opened during the test, which is beneficial for controlling the variable of diffusion time and thus further improving the accuracy and reliability of the test.

[0032] Please see Figure 3 The olfactory 5 has a through hole 11 on one side wall. A secondary air tube 4 is inserted into the through hole 11 and communicates with the olfactory 5. The secondary air tube 4 and the through hole 11 are in a sliding sealing fit, allowing the olfactory 5 to be disassembled and separated from the secondary air tube 4. A gate 12 is provided inside the olfactory 5 at the through hole 11. The gate 12 is used to automatically close the through hole 11 after the olfactory 5 is separated from the secondary air tube 4, so as to facilitate the disassembly and transfer of the olfactory 5 for testing. In this embodiment, a sealing ring (not shown in the figure) is provided inside the through hole 11. When the secondary air tube 4 is inserted into the through hole 11, the sealing ring respectively seals against the wall of the through hole 11 and... The auxiliary air tube 4 is sealed to ensure the airtightness of the connection; the gate 12 is vertically set and its upper end is rotatably connected to the inner wall of the sniffing box 5. When the auxiliary air tube 4 is inserted into the through hole 11, it can push the gate 12 to swing upward and open. When the auxiliary air tube 4 is disengaged from the through hole 11, the gate 12 can swing downward under the action of gravity to close the through hole 11, making the sniffing box 5 a closed independent unit. In this way, after the odor diffusion reaches the set time, the sniffing box 5 can be disassembled and moved to other locations for dogs to test, which helps to improve the flexibility of the police dog olfactory testing device.

[0033] Please see Figure 1 The odor sample box 1 has multiple main air tubes 3 connected horizontally at the same vertical position. Each main air tube 3 is connected to a olfactory box 5 via a secondary air tube 4. Figure 1 and Figure 2 In the embodiment described above, the odor sample box 1 has connection holes 10 in the middle of the four sides on the horizontal direction, and the main air tube 3 is connected to the odor sample box 1 through the connection holes 10. In this way, each time it is used, the sniffing box 5 on each main air tube 3 can be used to test one dog. Setting multiple main air tubes 3 can be used to test multiple dogs at the same time, which is beneficial to improving testing efficiency. If necessary, the sniffing box 5 on multiple main air tubes 3 can be used to repeatedly test the same dog to realize the verification of test results, thereby improving the reliability and accuracy of test results.

[0034] Please see Figure 2The odor sample box 1 has a vertical platform 13 at the bottom. The platform 13 is used to hold the odor sample. The height of the connection between the main gas tube 3 and the odor sample box 1 corresponds to the height of the platform 13. This not only makes it easy to pick up and put down the odor sample, but also allows the odor emitted by the odor sample to enter the main gas tube 3 more quickly, which helps to ensure the speed of natural diffusion and improves the testing efficiency.

[0035] Please see Figure 1 A thermometer 14 is installed inside the main gas pipe 3. In this way, since the temperature and temperature changes inside the constant temperature chamber may differ from those inside the main gas pipe 3, the thermometer 14 is installed inside the main gas pipe 3 to more directly grasp and set the ambient temperature for odor diffusion, which is beneficial for accurate testing.

[0036] Please see Figure 1 and Figure 2 The odor sample box 1, main air tube 3, secondary air tube 4 and olfaction box 5 are all made of stainless steel. The first lid 2 of the odor sample box 1 has a vent 15, which is connected to an exhaust fan (not shown in the figure) through a flexible tube. In this way, the stainless steel material does not easily adhere to odors. Before and after the test, the exhaust fan can remove the residual odor inside the olfactory testing device, avoiding mutual interference between tests and improving the accuracy and reliability of the test results.

[0037] Example 2:

[0038] Please see Figure 4 The difference from Embodiment 1 is that a vertical groove is provided on the side wall where the through hole 11 is located in the olfactory box 5. The gate 12 can slide vertically against the side wall. The upper end has an outwardly extending protrusion that acts as a slider and slides with the vertical groove. The lower end abuts against the lower edge of the through hole 11 and has an outwardly facing guide slope. The end of the auxiliary air tube 4 facing the olfactory box 5 has a bevel. During the process of the auxiliary air tube 4 being inserted into the through hole 11, the slope formed by the upper bevel of the auxiliary air tube 4 cooperates with the guide slope at the lower end of the gate 12. The gate 12 gradually slides upward and opens the through hole 11 to allow the auxiliary air tube 4 to be inserted. When the auxiliary air tube 4 is disengaged from the through hole 11, the gate 12 can slide downward under the action of gravity and close the through hole 11, making the olfactory box 5 a closed independent unit.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A device for olfactory testing of a police dog, characterized in that: The odor sample box includes an opening at the top with a lid for holding odor samples. A main air tube is horizontally arranged outside the odor sample box. One end of the main air tube is connected to the odor sample box and the other end is closed. Multiple secondary air tubes are arranged horizontally along the length of the main air tube. One end of the secondary air tube is connected to the main air tube and the other end is connected to a sniffing box. The sniffing box has an opening on one side with a lid for dogs to sniff the diffused odor of the odor sample.

2. The olfactory testing device for police dogs according to claim 1, characterized in that: The opening of the smelling box is located at the top, and the bottom of the smelling box contains scent-absorbing cotton.

3. The olfactory test device for a police dog according to claim 2, characterized in that: The lid of the smelling box opens and closes by sliding horizontally.

4. The olfactory test device for a police dog according to claim 1, characterized in that: A main valve is installed at the connection point between the main air tube and the odor sample box.

5. The device according to claim 1, wherein: A secondary valve is provided at the connection point between the secondary air delivery tube and the olfactory box.

6. The device according to claim 1, wherein: The sniffing box has a through hole on one side wall. The auxiliary air tube is inserted into the through hole and communicates with the sniffing box. The auxiliary air tube and the through hole are slidably sealed to allow the sniffing box to be disassembled and separated from the auxiliary air tube. The sniffing box is equipped with a gate at the through hole. The gate is used to automatically close the through hole after the sniffing box is separated from the auxiliary air tube, so as to disassemble and transfer the sniffing box for testing.

7. The device according to claim 1, wherein: The odor sample box has multiple main air tubes connected horizontally at the same vertical position, and each main air tube is connected to a olfactory box via a secondary air tube.

8. The device according to claim 1, characterized in that: The odor sample box has a vertical platform at the bottom. The platform is used to hold the odor sample. The height of the connection between the main gas tube and the odor sample box corresponds to the height of the platform.

9. The device according to claim 1, wherein: A thermometer is installed inside the main ventilator to detect the ambient temperature at which the odor diffuses.

10. The olfactory test device for a police dog according to claim 1, characterized in that: The odor sample box, main air tube, secondary air tube, and olfaction box are all made of stainless steel. An exhaust fan is also connected to the outside of the odor sample box to remove the internal odor after the test.

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