Novel liquid level detector device

Abstract

A novel liquid level detection meter device comprises a liquid level meter body, a GPRS module, a single-chip microcomputer module, a wireless remote controller, a fixing bin and a fixing rope, the signal output end of the single-chip microcomputer module is electrically connected with the signal input end of the GPRS module, and the novel liquid level detection meter device is further provided with a control circuit and a wireless receiving circuit. The fixed bin is of a hollow structure, the two liquid level meter bodies are installed in the fixed bin, and a plurality of water inlet holes are distributed in the surface of the fixed bin. The GPRS module, the single-chip microcomputer module, the wireless receiving circuit and the control circuit are installed in the element box and electrically connected, a fixing ring is arranged outside the fixing bin, and the lower end of the fixing rope is installed on the outer side of the fixing ring. The fixed bin is underwater. When one set of liquid level meter body for controlling related electric equipment breaks down, a worker can conveniently switch the other set of liquid level meter body to output a signal to the control circuit in a wireless mode through the wireless receiving circuit via the wireless remote controller beside the worker, and it is guaranteed that the controlled electric equipment can continue to work normally. Based on the above, the device has a good prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level detection equipment, in particular to a novel liquid level detection meter device. Background Art

[0002] The liquid level detector (referred to as the liquid level meter) is a widely used device. Its main ways of detecting liquid level are reflection type and pressure type. Specifically, the reflection type liquid level meter is installed at a fixed position above the water surface. When working, the transmitter of the reflection liquid level meter emits a detection signal (such as a microwave signal, etc.), which is then reflected by the water surface and received by the receiving head. The height of the liquid surface is obtained by calculating the time difference between the signal transmission and reception. The pressure type liquid level meter is installed at a fixed position below the water surface. The liquid level height is obtained by detecting the water pressure data (the greater the pressure, the deeper the liquid level, and vice versa). When the liquid level meter is used for liquid level control in related areas, many of them are connected to the signal input end of PLC, host computer (hereinafter referred to as control system), etc. When the liquid level is higher or lower than a certain level, the electrical equipment connected to the control system is started or not worked (for example, to control the related area, after the water level reaches a certain level, the water pump is started to pump out the accumulated water in the corresponding area, and the water pump is stopped when it is lower than a certain level).

[0003] Although the existing liquid level meter meets the control needs to a certain extent when used for liquid level control in relevant areas, it is still subject to technical limitations and has certain technical disadvantages. First, if an abnormality occurs during the operation of the liquid level meter, such as when the voltage signal output by the liquid level meter is too high or too low at a certain water depth, the relevant staff cannot immediately understand the situation. Then, based on the wrong voltage signal, the control system will control the working mode of the relevant electrical equipment (such as the water pump) abnormally (for example, the water level in the corresponding area is too low, and the water pump continues to work, resulting in a waste of electricity), which will have an adverse effect on normal production. Second, since the relevant control system is only equipped with one liquid level meter, after the liquid level meter fails, it will not be maintained and replaced in time, and the relevant equipment will be shut down during the replacement and maintenance, so it will still have an adverse effect on normal production. With the development of science and technology, it is a relatively mature IoT data receiving and display technology that collects dynamically changing voltage or current signals (such as collecting temperature signals output by temperature sensors. In actual applications, multiple signals can be collected) based on single-chip microcomputers, converts the signals into digital signals, and then transmits them remotely through GPRS modules or 4G modules or 5G modules. Remote personnel receive and display data through smart phones or PC application units, and understand relevant data through text, waveforms, etc. displayed on mobile phones or PC screens in real time. However, this technology has not been effectively applied in the working mode of liquid level meters collecting liquid levels and controlling related electrical equipment in linkage. Based on the above, it is very necessary to provide a liquid level meter device that allows relevant managers to understand the liquid level data of the corresponding area in real time and to ensure the normal operation of related electrical equipment controlled by the liquid level meter signal as much as possible. Utility Model Content

[0004] In order to overcome the drawbacks of the existing liquid level meters as described in the background due to structural limitations, the utility model provides a new type of liquid level detection meter device based on the existing mature Internet of Things data receiving and sending and display technology, which detects the liquid level of the relevant area through two sets of liquid level meter bodies. The relevant management personnel can understand the working performance of the two sets of liquid level meter bodies in real time. When one set of the liquid level meter bodies controlling the relevant electrical equipment fails, the output signal of the other set of liquid level meter bodies can be switched to the control circuit wirelessly, ensuring that the controlled electrical equipment can continue to work normally.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A novel liquid level detector device comprises a liquid level meter body, a GPRS module, a single-chip microcomputer module, a wireless remote controller, a fixed bin, and a fixed rope, wherein a signal output end of the single-chip microcomputer module is electrically connected to a signal input end of the GPRS module, and is characterized in that the device also comprises a control circuit and a wireless receiving circuit; the fixed bin is a hollow structure, and there are at least two sets of liquid level meter bodies, the two sets of liquid level meter bodies are installed in the fixed bin, and a plurality of water inlet holes are distributed on the surface of the fixed bin; the GPRS module, the single-chip microcomputer module, the wireless receiving circuit, and the control circuit are installed in a component box, a fixing ring is provided outside the fixed bin, and the lower end of the fixing rope is installed outside the fixing ring; the fixed bin is located at the bottom of the water; the signal output ends of the two sets of liquid level meter bodies are electrically connected to the wireless receiving circuit and the signal input ends of the single-chip microcomputer module respectively, the signal output end of the wireless receiving circuit is electrically connected to the signal input end of the control circuit, and the control power supply output end of the control circuit is electrically connected to the power supply input end of the electrical equipment.

[0007] Furthermore, the fixing bin is made of rust-proof material.

[0008] Furthermore, the liquid level meter body is a submersible liquid level transmitter.

[0009] Furthermore, the control circuit includes an electrically connected adjustable resistor, a resistor, a transistor and a relay, one end of the adjustable resistor is connected to one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected to the base of the transistor, the other end of the first resistor is connected to the emitter of the transistor, and the collector of the transistor is connected to the negative power input terminal of the relay.

[0010] Furthermore, the wireless receiving circuit includes an electrically connected wireless receiving circuit module and a relay, wherein the power output end of the wireless receiving circuit module is respectively connected to the positive power input ends of the two relays, and the negative power input ends of the two relays are connected to the negative power input end of the wireless receiving circuit module.

[0011] Compared with the existing technology, the utility model has the following beneficial effects: based on the existing mature Internet of Things data receiving and sending, and display technology, the utility model detects the liquid level of the relevant area through two sets of liquid level meter bodies, and the relevant management personnel can understand the working performance of the two sets of liquid level meter bodies in real time through the smart phone or PC at hand, etc. When one of the liquid level meter bodies controlling the relevant electrical equipment fails, the staff can conveniently switch the output signal of the other set of liquid level meter bodies to the control circuit wirelessly through the wireless remote control at hand and the wireless receiving circuit, thereby ensuring that the controlled electrical equipment can continue to work normally. Based on the above, the utility model has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0015] Figure 1 , 2 As shown in the figure, the new type of liquid level detection meter device includes liquid level meter body A2 and A3, GPRS module A5, single chip module A4, power module A1, wireless remote control A7, fixed bin 1, fixed rope 2 (to increase the strength of the wire and facilitate the placement of the fixed bin under the water surface), the signal output end of the single chip module A4 and the signal input end of the GPRS module A5 are connected by wires, and also has a control circuit 3 and a wireless receiving circuit 5; the fixed bin 1 is a hollow structure, and there are two sets of liquid level meter bodies A2 and A3, the two sets of liquid level meter bodies A2 and A3 are vertically spaced apart and are respectively installed in the upper left and right parts of the fixed bin 1, and a plurality of water inlet holes are distributed on the surface of the fixed bin 1. 101 (water can enter the fixed bin through the water inlet hole, and the water pressure acts on the two sets of liquid level meter bodies A2 and A3); the GPRS module A5, the single-chip computer module A4, the power module A1, the wireless receiving circuit 5, and the control circuit 3 are installed on the circuit board in the component box 4, and the wireless remote control A7 is carried by the staff. An annular fixing ring 102 is welded on the outside of the middle of the upper end of the fixed bin, and the lower end of the fixing rope 2 and the lower end of the wires connecting the two sets of liquid level meter bodies (leading upward through the opening at the left end of the fixed bin) are fixedly tied to the outside of the fixing ring 102, and the fixing rope and the wires are uniformly sheathed in a hose; the fixed bin 1 is located at the bottom of the relevant position, and the component box 4 is installed in the electric control box above the water surface.

[0016] Figure 1 , 2As shown in , the fixed bin 1 is made of rust-proof metal. The liquid level meter bodies A2 and A3 are finished products of immersion liquid level transmitters, and their detection surfaces are located at the upper lower end of the fixed bin 1. The wireless receiving circuit includes a wireless receiving circuit module A6, relays K2 and K3 connected via circuit board wiring. The power output terminals 3 and 4 of the wireless receiving circuit module A6 are respectively connected to the positive power input terminals of the two relays K2 and K3, and the negative power input terminals of the two relays K2 and K3 are connected to the negative power input terminal 2 of the wireless receiving circuit module A6. The control circuit includes an adjustable resistor RP, resistors R1 and R2, a transistor Q1 and a relay K1 connected via circuit board wiring. One end of the adjustable resistor RP is connected to one end of the first resistor R1 and one end of the second resistor R2. The other end of the second resistor R2 is connected to the base of the transistor Q1. The other end of the first resistor R1 is connected to the emitter of the transistor Q1. The collector of the transistor Q1 is connected to the negative power input terminal of the relay K1. The power input terminals 1 and 2 of the power module A1, the two control power input terminals of the relay K1 of the control circuit and the two poles of the AC 220V power supply are connected via wires respectively, the power output terminals 3 and 4 of the power module A1 and the positive power input terminal of the power input terminal of the control circuit relay K1 and the emitter of the transistor Q1, the power input terminals 1 and 2 of the wireless receiving circuit module A6, the power input terminals 1 and 2 of the single-chip module A4, the power input terminals 1 and 2 of the GPRS module A5, and the power input terminals 1 and 2 of the two sets of liquid level meter bodies A2 and A3 are connected via wires respectively. The control power input terminal and normally open contact terminal of relays K2 and K3 are connected to the signal output terminal pin 3 of the two sets of liquid level meter bodies A2 and A3 and the other end of the adjustable resistor RP at the signal input terminal of the control circuit through wires, the signal output terminal pin 3 of the two sets of liquid level meter bodies A2 and A3 and the signal input terminal pins 3 and 4 of the single-chip computer module A4 are connected through wires, and the two normally open contact terminals of the control power output terminal relay K1 of the control circuit and the power input terminal of the controlled electrical equipment (such as a water pump) M are connected through wires.

[0017] Figure 1 , 2As shown, after the AC 220V power supply enters the power input terminals 1 and 2 of the power module A1, the power output terminals 3 and 4 of the power module A1 output a stable DC 12V power supply which enters the wireless receiving circuit and control circuit, the single-chip microcomputer module A4, the GPRS module A5, and the power input terminals of the two liquid level meter bodies A2 and A3, and the above circuits and modules are powered on and work. The staff presses the first button D1 or the second button D2 of the portable wireless remote control A7 by hand, and the wireless remote control A7 will emit the first or second wireless closing signal. After the wireless receiving circuit module A6 receives the first or second wireless closing signal, its 3rd or 4th pin will output a high level and enter the positive power input terminal of the relay K2 or K3. The relay K2 or K3 is energized to close its control power input terminal and the normally open contact terminal. In this way, the 3rd pin of the liquid level meter body A2 or A3 will enter the other end of the adjustable resistor RP1 through the control power input terminal and the normally open contact terminal of the relay K2 or K3. That is to say, before work, the staff can select the control signal output by the liquid level meter body A2 or A3 to enter the signal input terminal of the control circuit (the other end of the adjustable resistor RP1) as needed. Further, the staff can select the control signal output by the liquid level meter body A2 or A3 as needed to control the working mode of the related electrical equipment (such as a water pump) M. The staff presses the first button D1 or the second button D2 of the wireless remote controller A7 again, and the wireless remote controller A7 will emit the first or second wireless open-circuit signal. Within a range of 2000 meters, after the wireless receiving circuit module A6 receives the first or second wireless open-circuit signal, its pin 3 or pin 4 will stop outputting a high level and enter the positive power input terminal of the relay K2 or K3. The relay K2 or K3 is no longer energized to close its control power input terminal and the normally open contact terminal to open the circuit. In this way, the pin 3 of the level meter body A2 or A3 will stop entering the other end of the adjustable resistor RP1 through the control power input terminal and the normally open contact terminal of the relay K2 or K3 (in actual circumstances, it is a working mode that requires the control signal output by the level meter body A2 or A3 to control the related electrical equipment (such as a water pump) M).After the level meter bodies A2 and A3 are powered on, the voltage signals output by the level meter bodies A2 and A3 are relatively high as the water level in the monitored area (such as a mine pit that needs to be drained) increases, and vice versa, the voltage signals output are relatively low. The two dynamically changing analog voltage signals enter the two signal input ends of the single-chip microcomputer module A4. The single-chip microcomputer module A4 converts the two dynamically input analog voltage signals into digital signals and outputs them to the signal input end of the GPRS module A5. The GPRS module A5 transmits the digital signals remotely, and the remote personnel receive and display the data through the smart phone or PC application unit, which can be monitored in real time via the mobile phone or The text, waveform, etc. displayed on the display screen of a mobile phone or PC can be used to understand the liquid level data of the relevant area (the liquid level data detected by the two sets of liquid level meter bodies A2 and A3 displayed on the mobile phone or PC); the above is an existing mature Internet of Things data receiving and display technology, and this application does not provide any protection for it. This application protects that the microcontroller module, GPRS module and mobile phone or PC can work together, and relevant personnel can understand the liquid level data detected by the two sets of liquid level meter bodies A2 and A3 on site in real time (the larger the number or waveform of the liquid level data detected by the two sets of liquid level meter bodies A2 and A3, the deeper the on-site liquid level, and vice versa. The shallower the liquid level).

[0018] Figure 1 , 2As shown, in the present invention, when the relevant management personnel learn through a mobile phone or PC that the corresponding set of liquid level gauge body detects abnormal liquid level data (for example, under normal circumstances, the voltage signals output by the two sets of liquid level gauge bodies should be consistent, and the voltage signals output by the two sets of liquid level gauge bodies displayed at this moment are inconsistent, and one of the sets of liquid level gauge bodies is obviously higher or lower than the usual data, indicating that one of the sets of liquid level gauge bodies may have a fault), the staff can go to the site and use a wireless remote control and a wireless receiving circuit to wirelessly control the other set of liquid level gauge body A2 or A3 signal output terminal and the other section of the adjustable resistor RP to connect, and control the working mode of the related electrical equipment such as the water pump M based on the signal output of the other set of liquid level gauge body A2 or A3 (the previous paragraph has explained the working process in detail). When the corresponding set of level gauge body A2 or A3 outputs a voltage signal with the change of water depth and enters the other end of the adjustable resistor RP, and the water level (that is, depth) is higher than the level threshold set by the adjustable resistor RP, the signal is divided by the adjustable resistor RP and the resistor R1, and the resistor R2 reduces the voltage and limits the current to enter the base of the transistor Q1, which is higher than 0.7V. The transistor Q1 is turned on and the collector outputs a low level and enters the negative power input terminal of the relay K1. The relay K1 is energized to close its control power input terminal and the normally open contact terminal, so that the water pump M will be energized to pump out water from the relevant area (for example, discharging water in the mine pit to the ground drainage ditch, etc.). When the corresponding set of liquid level gauge body A2 or A3 outputs a voltage signal with the change of water depth and enters the other end of the adjustable resistor RP, and the water level (that is, the depth) is lower than the liquid level threshold set by the adjustable resistor RP, the signal is divided by the adjustable resistor RP and the resistor R1, and the resistor R2 reduces the voltage and limits the current to enter the base of the transistor Q1 below 0.7V. The collector of the transistor Q1 is cut off and no longer outputs a low level to enter the negative power input terminal of the relay K1. The relay K1 loses power and no longer attracts its control power input terminal and the normally open contact terminal, so that the water pump M no longer gets power to work, and the purpose of automatic control is achieved.

[0019] Figure 1 , 2 As shown above, the new type is based on the existing mature Internet of Things data receiving and sending, and display technology. The liquid level of the relevant area is detected by two sets of liquid level meter bodies. The relevant management personnel can understand the working performance of the two sets of liquid level meter bodies in real time through the smart phone or PC at hand. When one of the liquid level meter bodies controlling the relevant electrical equipment fails, the staff can conveniently switch the output signal of the other set of liquid level meter bodies to the control circuit wirelessly through the wireless remote control at hand and the wireless receiving circuit, thereby ensuring that the controlled electrical equipment can continue to work normally (when the controlled electrical equipment stops working later, the faulty liquid level meter body will be maintained and replaced, etc., without interfering with the normal work). Figure 2In the figure, power module A1 is an AC 220V to DC 12V power module; the resistance values ​​of resistors R1 and R2 are 10K and 100K respectively; transistor Q1 is a 9013 model NPN transistor; the resistance value of adjustable resistor RP is 470K (specifically, the handle of the adjustable resistor RP is located at the outer end of the component box, and the side end of the ring handle is marked with a number representing the liquid level depth. Before use, the staff adjusts the adjustable resistor RP to the left, the resistance of the adjustable resistor RP becomes smaller, and the voltage division between it and the resistor R1 is relatively small. In this way, when the liquid level in the subsequent relevant area is relatively low, the transistor Q1 will be turned on, that is, the new liquid level depth control is set relatively low; before use, the staff adjusts the adjustable resistor RP to the right, the resistance of the adjustable resistor RP becomes larger, and the voltage division between it and the resistor R1 is relatively large. In this way, when the liquid level in the subsequent relevant area is relatively high, the transistor Q1 will be turned on, that is, the new liquid level depth control is set relatively high); relays K1, K2, and K3 are DC12V relay; the level meter body A2 or A3 is a finished product of the immersion level transmitter sensor model DP-802V, which has two power input terminals and one signal output terminal. The signal output terminal can output a voltage signal of 0-5V dynamically changing according to the detected liquid level; the GPRS module A5 is a finished product of the GPRS module model ZTWL-DTU; the main control chip model of the single-chip module A4 is STC12C5A60S2, and the single-chip module finished product A4 has multiple analog signal access terminals and two power input terminals, and the single-chip module finished product A4 has an RS485 data output port; the wireless remote control A7 and the wireless receiving circuit module A6 are finished products of the wireless transmitting module (with four transmitting buttons) and the wireless receiving circuit module (with four power output terminals) of the model KGS-B50-4 (completely consistent with the structure and principle of the car remote control receiver, etc.), and the wireless signal receiving and sending distance is 2000 meters.

[0020] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0021] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method 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 the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel liquid level detector device, comprising a liquid level meter body, a GPRS module, a single-chip microcomputer module, a wireless remote controller, a fixed bin, and a fixed rope, wherein the signal output end of the single-chip microcomputer module and the signal input end of the GPRS module are electrically connected, and characterized in that: It also has a control circuit and a wireless receiving circuit; the fixed warehouse is a hollow structure, there are at least two sets of liquid level meter bodies, the two sets of liquid level meter bodies are installed in the fixed warehouse, and a plurality of water inlet holes are distributed on the surface of the fixed warehouse; the GPRS module, the single-chip computer module, the wireless receiving circuit, and the control circuit are installed in the component box, there is a fixing ring outside the fixed warehouse, and the lower end of the fixing rope is installed outside the fixing ring; the fixed warehouse is located at the bottom of the water; the signal output ends of the two sets of liquid level meter bodies are electrically connected to the signal input ends of the wireless receiving circuit and the single-chip computer module respectively, the signal output end of the wireless receiving circuit is electrically connected to the signal input end of the control circuit, and the control power output end of the control circuit is electrically connected to the power input end of the electrical equipment.

2. The novel liquid level detector device according to claim 1 is characterized in that: The fixed bin is made of rust-proof material.

3. The novel liquid level detector device according to claim 1 is characterized in that: The liquid level meter body is a immersion type liquid level transmitter.

4. The novel liquid level detector device according to claim 1 is characterized in that: The control circuit includes an electrically connected adjustable resistor, a resistor, a transistor and a relay, one end of the adjustable resistor is connected to one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected to the base of the transistor, the other end of the first resistor is connected to the emitter of the transistor, and the collector of the transistor is connected to the negative power input end of the relay.

5. The novel liquid level detector device according to claim 1 is characterized in that: The wireless receiving circuit includes an electrically connected wireless receiving circuit module and a relay. The power output end of the wireless receiving circuit module is respectively connected to the positive power input ends of the two relays, and the negative power input ends of the two relays are connected to the negative power input end of the wireless receiving circuit module.

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