A non-contact liquid level intelligent detector

Abstract

The present invention discloses a non-contact intelligent liquid level detector, which relates to the field of intelligent liquid level detection. It is mainly aimed at detecting the liquid level of a non-transparent plastic shell, and uses a new liquid level detection sensor and logic processing technology to detect whether the liquid level in the shell is normal. When the non-contact intelligent liquid level detector is placed at a specified position of a container, if the liquid level is detected, the non-contact intelligent liquid level detector issues a "normal liquid level" voice prompt, and the liquid level indicator light flashes slowly; if the liquid level cannot be detected, the non-contact intelligent liquid level detector issues a "low liquid level" prompt, and the liquid level indicator light flashes quickly. The non-contact intelligent liquid level detector has a built-in multi-functional indicator, which can judge the battery power from the brightness on the one hand, and indicate the position of the liquid surface on the other hand. The present invention can conveniently and quickly perform intelligent detection of the liquid level in a non-transparent shell, avoiding damage to equipment and personnel caused by contaminated liquids and corrosive liquids in the detection body.

Description

Technical Field

[0001] The invention discloses a contactless liquid level intelligent detector and relates to the field of liquid level intelligent detection. Background Art

[0002] At present, the detection solution for non-transparent shell liquid level on the market is mainly contact detection. When using this method, the detection object needs to be inserted into the container. Impurities attached to the detector can easily enter the container to contaminate the liquid, affecting product quality or shortening the service life of the solution. When the detection object is taken out, the corrosive liquid dripping on it can easily cause damage to equipment and personnel. At the same time, the liquid level detectors on the market do not have intelligent detection and sound and light prompt functions, which may cause inconvenience and misjudgment when used. Summary of the invention

[0003] In view of the above-mentioned problems, the present invention utilizes a new liquid level detection sensor to detect the liquid level of the opaque shell, and utilizes logic processing technology, intelligent voice and display technology to realize sound and light prompts of the liquid level, which brings convenience to liquid level detection and liquid addition.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A non-contact liquid level intelligent detector includes a liquid level sensor, a shell induction switch, a logic processor, a voice and drive chip, a liquid level indicator, a speaker, a power switch, a lithium battery, a charging socket, a multi-function indicator, and connecting wires between them, and an external charger. The non-contact liquid level intelligent detector can detect the liquid level through the container shell without contacting the liquid, and send out sound and light prompts of insufficient liquid or normal liquid level according to the liquid level status.

[0006] The liquid level sensor, shell induction switch, and multi-function indicator are integrated on the bottom surface of the head of the non-contact liquid level intelligent detector shell and are in contact with the shell of the container to be measured; the liquid level sensor sensitivity adjustment hole is located on the head of the non-contact liquid level intelligent detector shell and corresponds to the liquid level sensor sensitivity adjustment knob; the liquid level indicator light and the power switch are located on the back of the non-contact liquid level intelligent detector shell; the logic processor, voice and drive chip, speaker, and lithium battery are located at the bottom of the non-contact liquid level intelligent detector shell; and the charging socket is located at the tail of the non-contact liquid level intelligent detector shell.

[0007] The multi-functional indicator is connected after the power switch and is connected in parallel with the liquid level sensor, the housing induction switch, the logic processor, and the voice and drive chip. It is powered by a lithium battery controlled by the power switch, and the lithium battery is charged by a charger through the charging interface. After the output signal A of the housing induction switch and the output signal B of the liquid level sensor are operated by the logic processor, the under-liquid signal C and the normal liquid level signal D are output. The two signals C and D are output to the voice and drive chip. When the output of the C path is valid, it triggers the voice and drive chip to output the voice of under-liquid and play it through the speaker, and at the same time, the liquid level indicator flashes quickly; when the output of the D path is valid, it triggers the voice and drive chip to output the voice of normal liquid level and play it through the speaker, and at the same time, the liquid level indicator flashes slowly.

[0008] The detection sensitivity of the non-contact liquid level intelligent detector can be adjusted through the sensitivity adjustment hole on the detector housing. By changing the sensitivity of the liquid level sensor, the wall thickness of the container penetrated by the non-contact liquid level intelligent detector can be changed, which can meet the needs of liquid level detection for different container wall thicknesses.

[0009] The logic processor contains an OR gate and an AND gate. The output signal A of the housing induction switch and 0 are OR-operated to form the under-liquid signal C; the output signal A of the housing induction switch and the output signal B of the liquid level sensor are AND-operated to form the normal liquid level signal D. Its logical operation formula is: C = A + 0, D = AB.

[0010] The voice and drive chip is a professional chip, and the voices of low liquid level and normal liquid level are integrated inside it, and are triggered by the C and D signals output by the logic processor respectively.

[0011] The multi-functional indicator consists of a step-down resistor and two high-brightness light-emitting diodes, and is located at the head of the non-contact liquid level intelligent detector. The two light-emitting diodes are respectively located on the sides of the bottom surface of the head of the non-contact liquid level intelligent detector, and have the functions of power indication and liquid level indication. When the lithium battery inside the non-contact liquid level intelligent detector has sufficient power, the multi-functional indicator emits bright light; when the power of the lithium battery inside the non-contact liquid level intelligent detector decreases, the multi-functional indicator emits dim light. At the liquid level critical point, the position indicated by the multi-functional indicator is the dividing line of the liquid level.

[0012] The charger, the charging interface, and the lithium battery are mutually matched. The charger has an intelligent trickle charging function, which can prevent overcharging from damaging the lithium battery, and has overvoltage, short-circuit, and abnormal temperature protection functions. Description of the Drawings

[0013] Figure 1 It is a working principle diagram of a non-contact liquid level intelligent detector.

[0014] Figure 2This is a cross-sectional view of the detector designed according to the working principle of a non-contact liquid level intelligent detector.

[0015] Figure 3 A top view of the detector designed according to the working principle of a non-contact liquid level intelligent detector.

[0016] Figure 1 Middle: 1-charger, 2-charging socket, 3-lithium battery, 4-power switch, 5-liquid level sensor, 6-shell induction switch, 7-logic processor, 8-voice and driver chip, 9-liquid level indicator light, 10-speaker, 11-wire, 12-wire, 13-liquid level sensor signal output line, 14-shell induction switch signal output line, 15-normal liquid level signal, 16-low liquid signal, 17-speaker line, 18-speaker line, 19-ground line, 20-multi-function indicator.

[0017] Figure 2 Middle: 2-charging socket, 3-lithium battery, 4-power switch, 5-liquid level sensor, 6-shell induction switch, 7-logic processor, 8-voice and drive chip, 9-liquid level indicator, 10-speaker, 20-multi-function indicator, 21-shell, 22-sensitivity adjustment hole.

[0018] Figure 3 Middle: 2-charging socket, 3-lithium battery, 4-power switch, 5-liquid level sensor, 6-shell induction switch, 7-logic processor, 8-voice and drive chip, 9-liquid level indicator light, 10-speaker, 20-multi-function indicator, 21-shell, 22-liquid level sensor sensitivity adjustment hole. DETAILED DESCRIPTION

[0019] This implementation is only an example for one type of liquid level detection liquid charger and does not limit the protection scope of the present invention.

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] A non-contact liquid level intelligent detector, 21-insulated shell includes: 5-liquid level sensor, 6-shell induction switch, 7-logic processor, 8-voice and drive chip, 9-liquid level indicator, 10-speaker, 4-power switch, 3-lithium battery, 2-charging socket, 20-multi-function indicator and connecting wires, and an external charger 1. The feature is that the non-contact liquid level intelligent detector can detect the liquid level through the container shell without contacting the liquid, and send out sound and light prompts of insufficient liquid or normal liquid level according to the liquid level status.

[0022] The 5-liquid level sensor, 6-shell induction switch, and 20-multi-function indicator are integrated on the bottom surface of the head of the non-contact liquid level intelligent detector 21-insulating shell, and are in contact with the shell of the container to be measured; 22-liquid level sensor sensitivity adjustment hole is located at the head of the non-contact liquid level intelligent detector 21-insulating shell, and corresponds to the 5-liquid level sensor sensitivity adjustment knob; 9-liquid level indicator light and 4-power switch are located on the back of the non-contact liquid level intelligent detector 21-insulating shell; 7-logic processor, 8-voice and drive chip, 10-speaker, and 3-lithium battery are located at the bottom of the non-contact liquid level intelligent detector 21-insulating shell; 2-charging socket is located at the tail of the non-contact liquid level intelligent detector 21-insulating shell.

[0023] The 20-multi-function indicator is connected to the 4-power switch, and is connected in parallel with the 5-liquid level sensor, 6-shell induction switch, 7-logic processor, and 8-voice and driver chip. The 4-power switch controls the use of 3-lithium battery for power supply, and the 3-lithium battery is charged by 1-charger through the 2-charging interface. The output signal A of the 14-shell induction switch and the output signal B of the 13-liquid level sensor are sent to the 7-logic processor for operation, and then the 16-liquid shortage signal C and the 15-liquid level normal signal D are output. The C and D two-way signals are output to the 8-voice and driver chip. When the 16-C-way output is valid, the 8-voice and driver chip is triggered to output the voice of liquid shortage and play it through the 10-speaker, and the 9-liquid level indicator flashes quickly; when the 15-D-way output is valid, the 8-voice and driver chip is triggered to output the voice of normal liquid level and play it through the 10-speaker, and the liquid level indicator flashes slowly.

[0024] The detection sensitivity of the non-contact liquid level intelligent detector can be adjusted through the 22-sensitivity adjustment hole on the detector housing. By changing the sensitivity of the 5-liquid level sensor, the wall thickness of the container penetrated by the non-contact liquid level intelligent detector can be changed, and it can adapt to the needs of liquid level detection of containers with different wall thicknesses.

[0025] The 7-logic processor contains an OR gate and an AND gate. The output signal A of the shell sensing switch 14 and 0 are ORed to form a 16-liquid shortage signal C; the output signal A of the shell sensing switch 14 and the output signal B of the liquid level sensor 13 are ANDed to form a 15-liquid level normal signal D. The logical operation formula is: C=A+0, D=AB.

[0026] The 8-voice and drive chip is a professional chip, which integrates the voice of low liquid level and normal liquid level, and is triggered by the C and D signals output by the logic processor respectively.

[0027] The 20-multi-function indicator consists of a voltage-dropping resistor and two high-brightness light-emitting diodes, and is located at the head of the non-contact liquid level intelligent detector. The two light-emitting diodes are respectively located on the sides of the bottom surface of the head of the non-contact liquid level intelligent detector, and have the functions of power indication and liquid level indication. When the 3-lithium battery inside the non-contact liquid level intelligent detector has sufficient power, the 20-multi-function indicator emits bright light; when the power of the 3-lithium battery inside the non-contact liquid level intelligent detector decreases, the 20-multi-function indicator becomes dim. At the critical point of the liquid level, the position indicated by the 20-multi-function indicator is the dividing line of the liquid level.

[0028] The 1-charger, 2-charging interface, and 3-lithium battery are matched with each other. 1-The charger has an intelligent trickle charging function to prevent overcharging from damaging the lithium battery, and has overvoltage, short circuit, and abnormal temperature protection functions.

[0029] Furthermore, the above scheme is applied to an example, as follows:

[0030] A non-contact liquid level intelligent detector. When 3-lithium battery is out of power, 20-multi-function indicator becomes dark. At this time, the plug of 1-charger is inserted into 2-charging socket for charging. The charger has intelligent trickle charging function, which can prevent overcharging and damage to lithium battery, and has overvoltage, short circuit and temperature abnormality protection functions. When using the non-contact liquid level intelligent detector, 4-power switch is placed in the "on" position, the non-contact liquid level intelligent detector is powered, and 20-multi-function indicator lights up. At this time, the non-contact liquid level intelligent detector is placed in the container shell detection position, 6-shell induction switch is triggered to output A-channel signal to 7-logic processor, if 5-liquid level sensor detects the liquid level, it outputs B-channel signal to 7-logic processor; if 5-liquid level sensor cannot detect the liquid level, no signal is output to 7-logic processor. 7-Logic processor built-in circuit performs logic calculation on output signals A and B of 5-liquid level sensor and 6-shell induction switch, and the calculation formula is: C = A + 0 D = AB. When C-channel output is valid, 8-voice and driver chip is triggered to output voice information of "liquid shortage" and play it through 10-speaker, and at the same time, 9-liquid level indicator flashes quickly; when D-channel output is valid, 8-voice and driver chip is triggered to output voice information of "liquid level is normal" and play it through 10-speaker, and at the same time, 9-liquid level indicator flashes slowly. When liquid shortage occurs, the non-contact liquid level intelligent detector can be moved. When the non-contact liquid level intelligent detector changes from liquid shortage to normal liquid level state, the position indicated by 20-multi-function indicator is the actual liquid level position.

Claims

1. A non-contact liquid level intelligent detector, which includes a liquid level sensor, a shell induction switch, a logic processor, a voice and drive chip, a liquid level indicator, a speaker, a power switch, a battery, a charging socket, a multi-function indicator and connecting wires, and an external charger in an insulating shell; It is characterized in that The contactless liquid level intelligent detector can detect the liquid level through the container shell without contacting the liquid; the liquid level sensor, shell induction switch, and multi-function indicator are integrated on the bottom surface of the head of the contactless liquid level intelligent detector shell and contact the shell of the container to be measured; the liquid level sensor sensitivity adjustment hole is located on the head of the contactless liquid level intelligent detector shell and corresponds to the liquid level sensor sensitivity adjustment knob; the liquid level indicator light and power switch are located on the back of the contactless liquid level intelligent detector shell; the logic processor, voice and drive chip, speaker, and battery are located at the bottom of the contactless liquid level intelligent detector shell; the charging socket is located at the tail of the contactless liquid level intelligent detector shell; the logic processor contains an OR gate and an AND gate, and the output signal A of the shell induction switch and 0 are ORed to form a liquid shortage signal C; the output signal A of the shell induction switch and the output signal B of the liquid level sensor are ANDed to form a normal liquid level signal D, and its logical operation formula is: C=A+0, D=AB; The C and D signals are output to the voice and driver chip. When the C output is valid, the voice and driver chip is triggered to output the voice of lack of liquid and play it through the speaker, and the liquid level indicator light flashes quickly; when the D output is valid, the voice and driver chip is triggered to output the voice of normal liquid level and play it through the speaker, and the liquid level indicator light flashes slowly; the multifunctional indicator is composed of a step-down resistor and two high-brightness light-emitting diodes, which are located on the head of the contactless liquid level intelligent detector. The two light-emitting diodes are respectively located on the sides of the bottom surface of the head of the contactless liquid level intelligent detector, and have power indication and liquid level indication functions. When the battery power inside the contactless liquid level intelligent detector is sufficient, the multifunctional indicator emits bright light. When the battery power inside the contactless liquid level intelligent detector is reduced, the multifunctional indicator emits dim light. At the critical point of the liquid level, the position indicated by the multifunctional indicator is the dividing line of the liquid level.

2. A non-contact liquid level intelligent detector as claimed in claim 1, It is characterized in that The multifunctional indicator is connected behind the power switch and is connected in parallel with the liquid level sensor, the shell induction switch, the logic processor, the voice and the driving chip. The power switch controls the use of a battery for power supply, and the battery is charged using a charger through a charging interface.

3. A non-contact liquid level intelligent detector as claimed in claim 1, It is characterized in that The detection sensitivity of the non-contact liquid level intelligent detector can be adjusted through the sensitivity adjustment hole on the detector housing. By changing the sensitivity of the liquid level sensor, the wall thickness of the container that the non-contact liquid level intelligent detector penetrates can be changed, and it can meet the needs of liquid level detection of containers with different wall thicknesses.

4. A non-contact liquid level intelligent detector as claimed in claim 1, It is characterized in that The voice and drive chip is a professional chip, which integrates the voice of low liquid level and normal liquid level, and is triggered respectively by the C and D signals output by the logic processor.

5. A non-contact liquid level intelligent detector as claimed in claim 1, It is characterized in that The charger, charging interface and battery are matched with each other; the charger has an intelligent trickle charging function to prevent overcharging from damaging the battery, and has overvoltage, short circuit and abnormal temperature protection functions.

Images