CN218272747U - Liquid detector - Google Patents

Abstract

The utility model relates to a liquid detector belongs to security installations technical field, and the single liquid that leads to the result error great, especially to the index is close of security installations among the prior art to the index that liquid detected has been solved, the problem of misjudgement easily. The utility model discloses a liquid detector, include: the device comprises a box body, a main control board, an upper computer, a balance column and a weighing platform; the main control board, the upper computer, the balance column and the weighing platform are all arranged in the box body; the upper computer is connected with the main control board and executes the control command of the main control board to carry out man-machine interaction; the balance column is provided with a Raman unit and a dielectric constant unit, and the weighing platform is provided with a weighing sensor. The utility model provides a liquid detector detects a plurality of indexes to liquid through adopting multi-technology, thereby detects to the attribute of liquid through from different aspects and confirms the liquid that is surveyed, and the accuracy is higher, has enlarged article and has detected the classification, and the range of application is wider.

Description

Liquid detector

Technical Field

The utility model belongs to the technical field of the security check technique and specifically relates to a liquid detector.

Background

The security inspection technology is more important for large public places such as airports, subways and the like, and the liquid detected by the security inspection equipment can find possible criminal activities as soon as possible so as to timely prevent harm; moreover, as criminal activities tend to be concealed, dangerous liquids such as high-concentration ethanol, gasoline and concentrated sulfuric acid are added into beverage bottles to implement dangerous activities, so that detection equipment specially aiming at the dangerous liquids is indispensable to effectively ensure public safety of crowded places.

The existing security inspection equipment for detecting the dangerous liquid usually only detects the single attribute of the liquid and is difficult to distinguish the liquid with similar attribute, so that the judgment is easy to be wrong, the accuracy of the detection result is low, and the personal safety of people in public places is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present invention is directed to a liquid detector to solve the problem that the security inspection equipment for the existing hazardous liquid only detects single attribute, easily judges the error, and the accuracy of the detection result is low.

The purpose of the utility model is mainly realized through the following technical scheme:

a liquid detector comprising: the device comprises a box body, a main control board, an upper computer, a balance column and a weighing platform; the main control board, the upper computer, the balance column and the weighing platform are all arranged in the box body; the upper computer is connected with the main control board and executes the control command of the main control board to carry out man-machine interaction; the balance column is provided with a Raman unit and a dielectric constant unit, and the weighing platform is provided with a weighing sensor.

Further, the main control board controls the Raman unit and the dielectric constant unit to respectively perform Raman detection and dielectric constant detection.

Furthermore, the balance column comprises a column body, a balance block, a pulley and a detection box; the pulley is arranged at the top end of the column body; the pulley is provided with a silk thread, and two ends of the silk thread are respectively connected with the balance block and the detection box; the weight of the balance weight is equal to that of the detection box.

Furthermore, the dielectric constant unit and the Raman unit are arranged on the detection box; the detection plate of the dielectric constant unit is arranged on the outer side wall of the detection box and faces to the liquid to be detected.

Furthermore, a plurality of electrodes are arranged on the surface of the detection plate, which is opposite to the liquid to be detected, and the electrodes comprise a receiving electrode and an emitting electrode.

Furthermore, the lower end of the detection plate is provided with a through hole, and a Raman probe of the Raman unit is arranged in the through hole.

Furthermore, the weighing platform also comprises a base, a carrying disc and a metal sensor; the base sets firmly in the bottom half, and metal sensor and weighing sensor all set firmly on the base, carry the thing dish and locate weighing sensor's upper end.

Furthermore, the upper computer is connected with a display, and the display executes a control command of the upper computer to display characters.

Further, the Raman unit further comprises a Raman control board and a laser.

Furthermore, the Raman probe is connected with the Raman control board and the laser.

Compared with the prior art, the utility model discloses can realize following one of beneficial effect at least

(1) The utility model discloses a liquid detector, through setting up raman unit, dielectric constant unit and weighing sensor and realizing the detection to liquid, wherein the raman unit can be through the solid-state and the liquid material of the raman spectrum information detected article by the liquid of being surveyed, can realize the affirmation to being examined liquid and container through raman detection, can obtain dielectric constant information and the weight information of being surveyed the interior liquid of container through dielectric constant unit and weighing sensor, and three kinds of detection methods fuse and can improve the accuracy.

(2) The utility model discloses a liquid detector, the upper end of balance post cylinder sets up the pulley, and the silk thread that balancing piece and detection case were connected respectively at both ends passes the pulley for balancing piece and detection case reach balancedly in the cylinder both sides, realize vertical removal to the detection case through the handle on the removal detection case, are convenient for aim at raman probe or the probe plate on the detection case and are surveyed the liquid and detect.

(3) The utility model discloses a liquid detector establishes to many transmitting electrodes many receiving electrode mode on the probe card in the dielectric constant unit, arranges according to a determining order between a plurality of electrodes to the interval of adjacent electrode is the same, makes the data that obtain through the dielectric constant have the symmetry, and can judge through the symmetry of observation data whether the measured liquid is normal position to be put.

The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.

FIG. 1 is a schematic frame diagram of a liquid detector according to the present invention;

FIG. 2 is a schematic structural view of a balance column of the liquid detector of the present invention;

fig. 3 is a schematic structural view of a weighing platform of the liquid detector of the present invention;

fig. 4 is a schematic structural view of a balance column of a liquid detector according to embodiment 2 of the present invention;

fig. 5 is an electrode distribution diagram of the detection plate of the liquid detector of the present invention.

Reference numerals:

1-a balancing column; 11-a column; 111-travel switches; 12-a counterweight; 13-a pulley; 14-a detection box; 141-a handle; 142-a probe plate; 143-raman probe; 15A-a first support; 15B-a second support; 15C — a third support; 16-an electric machine; 17-a slide block; 18-trapezoidal lead screw; 2-weighing platform; 21-a base; 22-a load cell; 23-a carrier tray; 24-metal sensor.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention.

The present embodiment discloses a liquid detector, referring to fig. 1 to 3, including: the device comprises a box body, a balance column 1, a weighing platform 2 and a main control board; the weighing platform 2, the balance column 1 and the main control board are all fixedly arranged at the bottom in the box body; the weighing platform 2 is used for placing the liquid to be measured and weighing and detecting the liquid to be measured, the balance column 1 is used for detecting the dielectric constant and Raman spectrum information of the liquid to be measured, and the main control board is used for controlling all electronic components in the detector.

Further, referring to fig. 3, a weighing sensor 22 is arranged in the weighing platform 2, and a raman unit and a dielectric constant unit are carried on the balance column 1.

The main control board is preferably an MCU control system, can interact with the Raman unit, the dielectric constant unit and the weighing sensor 22, and judges whether the detected liquid is contraband or not through acquisition, analysis and calculation.

The host computer is connected with the display, the display preferably selects a touch screen display, human-computer interaction is realized with the host computer through the touch screen display, and the display can display and output signals of the host computer.

Referring to fig. 2, the balance column 1 is vertically fixed at the bottom of the box body and comprises a column body 11, a balance block 12, a pulley 13, a detection box 14 and a first support 15A, the pulley 13 is fixedly arranged at the top end of the column body 11, a silk thread is arranged on the pulley 13, two ends of the silk thread are respectively connected with the balance block 12 and the detection box 14, the weights of the balance block 12 and the detection box 14 are equal, the balance block 12 and the detection box 14 can be balanced on two sides of the column body 11, and when the balance block 12 and the detection box 14 are not influenced by external force, the balance block 12 and the detection box 14 can keep relatively static on the pulley 13; the first support 15A is provided at the bottom of the column body 11 for fixing the balance post 1.

Further, a handle 141 is arranged on the side wall of the detection box 14, and the detection box 14 is vertically moved by vertically moving the handle 141.

Furthermore, the column body 11 is a square column, an anti-slip layer is arranged on the surface of the square column, which is in contact with the balance block 12, and the anti-slip layer is used for increasing the friction force when the balance block 12 moves relative to the column body 11, so that when the detection box 14 stops moving through the handle 141, the balance block 12 is rapidly stopped due to large friction resistance, and thus the balance block 12 and the detection box 14 rapidly reach a balanced state, and the stability of the detection box 14 during vertical movement is improved; the dielectric constant unit and the raman unit are provided on the detection box 14, and vertical movement of the two modules can be realized by vertically moving the detection box 14 through the handle 141.

Further, dielectric constant unit and raman unit have been carried on the detection case 14, wherein be equipped with the probe plate 142 of dielectric constant unit on the lateral wall of detection case 14, the dielectric constant control panel of dielectric constant unit is located in the detection case 14, the outside orientation of probe plate 142 is surveyed the liquid, for the front of probe plate 142, the inboard is equipped with the electrode, for the back of probe plate 142, the electrode is through establishing the electric field in the detector box of probe plate 142 under dielectric constant unit control circuit's effect, thereby the realization carries out the dielectric constant to being surveyed the liquid and detects.

Further, a through hole is formed in the lower end of the detection plate 142, and a raman probe 143 of the raman unit is disposed in the through hole; the raman probe 143 is used to collect raman spectra.

Two rows of through holes are formed in the detection plate 142, two rows of indicator lamps are arranged in the through holes, and the indicator lamps in each row are identical in number and opposite in position; the indicator light has two functions: 1. the box body of the detector can be illuminated, so that an operator can conveniently observe the liquid level of the detected liquid placed in the box body, and the handle is moved to enable the detection probe or the detection plate 142 of the Raman unit to be positioned below the detected liquid level, so that the detected liquid can be comprehensively scanned; 2. the operator can know the current detection mode conveniently, and illustratively, the number of the indicating lamps in each column is set to 7, the first five indicating lamps from top to bottom are used for indicating the switch state of the dielectric constant unit, and the last 2 indicating lamps are used for indicating the switch state of the Raman unit. When the indicator light is on, the detection module corresponding to the on indicator light is in an on state, and conversely, when the indicator light is off, the detection module corresponding to the off indicator light is in an off state.

Further, the main control board is connected to the pilot lamp, top and bottom in the box all are equipped with photoelectric sensor, photoelectric sensor connects the main control board, set up specific position through photoelectric sensor in the box and be used for placing the liquid of being surveyed, the detection module of being convenient for carries out accurate detection to the liquid of being surveyed, when being surveyed the liquid and being located this specific position, photoelectric sensor can give the main control board with correct position signal transmission, main control board control pilot lamp extinguishes, thereby realize the location to the liquid of being surveyed in the box.

Furthermore, if the Raman unit is in the detection state, the main control board controls the indicator lamp for indicating the Raman unit to be on for a long time, and after the main control board receives the position signal of the photoelectric sensor, the main control board controls the indicator lamp for indicating the Raman unit to be off; similarly, if the main control board is in the detection state of the dielectric constant unit, the main control board controls the indicator light for indicating the dielectric constant unit to be on, and after the main control board receives the position signal of the photoelectric sensor, the main control board controls the indicator light for indicating the dielectric constant unit to be off.

Referring to fig. 3, the weighing platform 2 further includes a base 21, an object carrying tray 23 and a metal sensor 24, the base 21 is fixedly connected with the bottom of the box body, the metal sensor 24 and the weighing sensor 22 are both fixedly arranged on the base 21, and the object carrying tray 23 is arranged at the upper end of the weighing sensor 22.

The metal sensor 24 is connected with the main control board, and the metal sensor 24 is used for judging whether the container containing the liquid to be detected is made of metal materials or not; if the container to be detected is made of metal, the metal sensor 24 transmits a metal signal to the main control board, the main control board controls the raman unit and the dielectric constant unit to be closed, and only the touch screen display is allowed to select the weighing sensor 22 for detection.

Furthermore, auxiliary detection options are set on the touch screen display, and the auxiliary detection comprises dielectric constant detection and density detection; after the auxiliary detection option is selected, the touch screen display transmits the auxiliary detection option information to the main control board through the upper computer, and the main control board controls the dielectric constant unit and the weighing sensor 22 to be simultaneously started, so that the dielectric constant detection and the density detection of the liquid to be detected are simultaneously carried out; after the auxiliary detection is selected, the dielectric constant unit is closed, the touch screen display transmits option information for closing the dielectric constant unit to the main control board through the upper computer, and the main control board only controls the weighing sensor 22 to be started, and only carries out weighing detection on the liquid to be detected.

The Raman spectrum detection technology adopted by the Raman unit is to judge by utilizing different molecular energy levels of different substances, the Raman unit comprises a Raman control board, a Raman probe 143, a spectrometer and a laser, the Raman control board is connected with a main control board, a Raman spectrum database is arranged in the Raman control board, and Raman characteristic information of different substances is stored in the Raman spectrum database; the Raman control board controls the opening of the Raman probe 143, the laser is connected with the Raman probe 143, when the Raman probe 143 is started, an opening command is transmitted to the laser, the laser is connected to emit laser to the liquid to be detected under the control of the Raman control board, the Raman probe 143 collects scattered light, energy information of the scattered light is transmitted to the spectrometer, the energy information is analyzed by the spectrometer and then matched with a Raman spectrum database in the Raman control board to confirm the material, the Raman control board feeds the detection result back to the main control board, and the main control board transmits the detection result to the touch screen display through the upper computer to display the detection result.

Furthermore, a Raman spectrum database in the Raman unit classifies different substances into safety and danger, the Raman spectrum database is used for confirming the safety types of the detected substances while confirming the detected substances, the Raman unit is used for simultaneously conveying the confirmed detected substances and the safety types of the detected substances to the main control board, the main control board is used for conveying information to the touch screen display through the upper computer, and the touch screen display can simultaneously display the names and the safety types of the detected substances.

Further, if the detected substance is classified as safe by the Raman unit, the main control board controls the door lock to be opened after receiving the safety information transmitted by the Raman unit, and simultaneously sends a signal to the upper computer, so that the upper computer controls the touch screen display to display the detection result; if the detected substance is classified as dangerous, the main control board controls the door lock to maintain a closed state after receiving the dangerous information transmitted by the Raman unit, and simultaneously sends a signal to the upper computer to enable the upper computer to control the touch screen display to display a detection result and classification information, the upper computer controls the touch screen display to display an 'affirmation' option, after an operator clicks the 'affirmation', the touch screen display feeds the affirmation signal back to the main control board through the upper computer, and the main control board controls the door lock to be opened.

Furthermore, in order to avoid interference of the liquid package on Raman detection results, the Raman spectrum detection technology is applied to component analysis of colorless transparent or light-colored transparent packaged substances, and liquid and solid substances can be identified.

The dielectric constant unit is connected with the main control board, a dielectric constant detection technology is adopted, the dielectric constant detection technology measures the relative dielectric constant of the detected liquid relative to water through a pure electric field, a detection result is obtained after the detected liquid is confirmed through a dielectric constant table in the main control board, and the detection result is transmitted to the display through the upper computer to be displayed.

Further, a multi-emitter multi-receiver mode is arranged side by side on the back surface of the detection plate 142 in the permittivity unit, when the permittivity detection is performed on the detected liquid, the property of the detected liquid is judged by detecting the capacitance change between the emitter and the receiver, for the purpose of stabilizing the electric field, a plurality of electrodes may be arranged on the detection plate 142, for example, see fig. 5, where a0-a4 are the receivers, e0-e1 are the emitters, and the arrangement order of the electrodes is: a0, e0, a1, a4, a2, e1, a3, the length range of each electrode is set to 10-60 mm, preferably 30mm, the width range is set to 5-30 mm, preferably 5mm, the distances between adjacent electrodes are equal, and the distance range is set to 1-4 mm, so that the coupling between the emitter and the receiving stage is realized conveniently, and the electrodes are uniformly arranged on the detection plate 142, thereby being beneficial to judging whether the detected liquid is rightly placed or not through observing the symmetry of the obtained data, and being beneficial to judging whether containers in different shapes are rightly placed or not, so as to ensure the detection accuracy.

Furthermore, the dielectric constant of water is set in the dielectric constant control board, the dielectric constant of the liquid to be detected can be compared with the dielectric constant of the water, if the dielectric constant of the liquid to be detected is equal to the dielectric constant of the water, the liquid to be detected can be classified into safety by the dielectric constant control board, if the dielectric constant of the liquid to be detected is different from the dielectric constant of the water, the liquid to be detected can be classified into suspicious by the dielectric constant detection module, the safety class of the substance to be detected is transmitted to the main control board by the dielectric constant control board, the main control board transmits specific safety class information to the upper computer, and the upper computer controls the touch screen display to display the corresponding safety class information of the liquid to be detected.

Optionally, the dielectric constant of common hazardous liquid can be set in the dielectric constant control board, the set dielectric constant of the hazardous liquid is classified into danger, if the dielectric constant of the detected liquid is equal to the set dielectric constant of the hazardous liquid, the dielectric constant control board can classify the detected liquid into danger and send information that the safety category is dangerous to the main control board, the main control board transmits the information of the safety category corresponding to the detected liquid to the upper computer, and the upper computer controls the touch screen display to display the safety category of the detected liquid, so that the accuracy of the dielectric constant detection result is improved.

Further, if the detected substance is classified as safe by the dielectric constant unit, the main control board controls the door lock to be opened while transmitting information to the upper computer; if the detected substance is classified as suspicious or dangerous, the main control board controls the door lock to maintain a closed state while transmitting information to the upper computer, the upper computer controls the touch screen display to display safety categories and also can display a confirmation option, after the operator clicks the confirmation option, the touch screen display feeds a confirmation signal back to the main control board through the upper computer, and the main control board controls the door lock to be opened.

The weighing sensor 22 is used for obtaining the weight of the measured liquid and transmitting a signal to the main control board, a sample library of different container weights-the liquid volume of the container in a full bottle state is arranged in the upper computer, after an operator selects the container containing the measured liquid on the touch screen display, the touch screen display feeds the selected container information back to the upper computer, the upper computer calls the weight of the selected container and the liquid volume of the container in a full bottle state corresponding to the container from the sample library and transmits the weight of the selected container and the liquid volume to the main control board, and the main control board utilizes a formula: density = (total weight-container weight containing measured liquid)/liquid volume, thereby calculating the density of the measured liquid in the selected container in a full bottle state, and the control board compares the measured density of the measured liquid with the density of water, thereby determining whether the liquid is water.

Optionally, the density of various common hazardous liquids is set in the main control board, and the measured density of the common hazardous liquids can be compared with the density of the common hazardous liquids, which is beneficial to improving the accuracy of the weighing sensor 22.

Furthermore, an inputtable window of liquid volume and a container type selectable window are arranged on the touch screen display, the liquid volume is input on the touch screen display, the container type is selected, the input liquid volume information and the container type information are fed back to the main control panel by the touch screen display through the upper computer, and the density of the measured liquid is obtained by the main control panel according to a density calculation formula.

Further, the upper computer is connected with a bar code scanner and is used for obtaining bar code information of the detected liquid container; after the bar code scanner is used for scanning the bar code on the detected liquid container, the bar code scanner transmits the bar code information to the upper computer and compares the bar code information with a container sample library in the upper computer, so that the weight of the container containing the detected liquid and the liquid volume of the container in a full bottle state are obtained.

Optionally, the upper computer is connected with a printer, preferably a thermal printer, when the touch screen display displays the detection result, the printing option can be selected, and after the touch screen display transmits a signal for printing the detection result to the upper computer, the upper computer sends an instruction to the printer to enable the printer to operate and print the paper detection result.

The main control board controls the indicator light and the buzzer at the same time, and under different conditions, the indicator light displays different colors and the buzzer makes different sounds; in the detection process of the detected liquid, the main control board controls the indicator lamp to display blue, and after the detection result is obtained, the main control board controls the indicator lamp to display different colors and controls the buzzer to make different sounds according to different detection results; specifically, when the detection result is safe, the indicator light is green, and the buzzer sends a prompt tone; when the detection result is dangerous, the indicator light is red, and the buzzer gives an alarm sound; when the detection result is suspicious, the indicator light is yellow, and the buzzer sends out an alarm sound.

Optionally, the measured liquid is placed on the weighing platform 2 and then is closed, the door closing information is transmitted to the main control board after the door is locked by the door lock, and the main control board controls the raman unit to be opened, so that the raman detection mode is the default detection mode.

Example 2

This example is based on the design of example 1.

Referring to fig. 4, the balance column 1 includes a motor 16, a slider 17, a coupler and a trapezoidal lead screw 18, the motor 16 is fixedly disposed at the upper end of the column body 11 through a support sheet, the lower end of the motor 16 is connected with the trapezoidal lead screw 18 through the coupler, the upper end of the trapezoidal lead screw 18 is provided with a second support 15B, the second support 15B is fixed on the column body 11 and is provided with a through hole, so that the upper end of the trapezoidal lead screw 18 can pass through the through hole to be connected with the coupler, the lower end of the trapezoidal lead screw 18 is rotatably disposed on a third support 15C, the slider 17 is sleeved on the trapezoidal lead screw 18 and then fixed on the side wall of the detection box 14, the motor 16 is controlled to start, stop and overturn through a switch on the motor 16, when the motor 16 drives the trapezoidal lead screw 18 to rotate, the slider 17 can be driven to vertically move along the trapezoidal lead screw 18, so as to drive the detection box 14 to synchronously move, both ends of the balance column 1 are provided with stroke switches 111, when the slider 17 moves to the stroke switches 111 and contacts with the stroke switches 111, the stroke switch can be triggered to stop the motor 16, and avoid collision damage to the support when the slider 17 moves over-stroke.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims (10)

1. A liquid detector, comprising: the device comprises a box body, a main control board, an upper computer, a balance column (1) and a weighing platform (2);

the main control board, the upper computer, the balance column (1) and the weighing platform (2) are all arranged in the box body;

the upper computer is connected with the main control board and executes the control command of the main control board to carry out man-machine interaction;

a Raman unit and a dielectric constant unit are carried on the balance column (1), and a weighing sensor (22) is arranged on the weighing platform (2).

2. The fluid detector according to claim 1, wherein the main control board controls the raman unit and the dielectric constant unit to perform raman detection and dielectric constant detection, respectively.

3. The fluid detector according to claim 2, wherein the balance post (1) comprises a column (11), a balance weight (12), a pulley (13) and a detection box (14); the pulley (13) is arranged at the top end of the column body (11); a silk thread is arranged on the pulley (13), and two ends of the silk thread are respectively connected with the balance block (12) and the detection box (14); the weight of the balance weight (12) is equal to that of the detection box (14).

4. The fluid detector of claim 3, wherein the dielectric constant unit and the Raman unit are disposed on the detection chamber (14); the detection plate (142) of the dielectric constant unit is arranged on the outer side wall of the detection box (14) and faces towards the liquid to be detected.

5. The fluid detector of claim 4, wherein the face of the probe plate (142) facing away from the fluid being detected comprises a plurality of electrodes, the electrodes comprising a receiver electrode and an emitter electrode.

6. The fluid testing meter of claim 5, wherein the lower end of the probe plate (142) is provided with a through hole, and the Raman probe (143) of the Raman unit is disposed in the through hole.

7. The liquid detector according to claim 6, characterized in that the weighing station (2) further comprises a base (21), a carrier plate (23) and a metal sensor (24); the base (21) set firmly in bottom half, metal sensor (24) with weighing sensor (22) all set firmly in on base (21), carry thing dish (23) to locate the upper end of weighing sensor (22).

8. The liquid detector according to claim 7, wherein the upper computer is connected to a display, and the display executes a control command of the upper computer to display text.

9. The fluid detector of claim 8, wherein the Raman unit further comprises a Raman control board and a laser.

10. The fluid detector of claim 9, wherein the raman probe (143) couples the raman control board and the laser.

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