CN209197828U - A kind of ultrasonic water meter dismantling prevention structure based on Hall switch - Google Patents

Abstract

The ultrasonic water meter dismantling prevention structure based on Hall switch that the utility model discloses a kind of, including the water meter upper cover mutually spliced and water meter lower cover, cover gab is circumferentially with an annular convex platform along it under water meter, cover gab is equipped with the annular mounting groove being adapted to annular convex platform on water meter, the quadrangle of water meter lower cover and water meter upper cover is fixed by screws, water meter lower cover quadrangle is respectively equipped with the screw via hole worn for screw, and a permanent magnet is wherein installed in a screw via hole；It further include being installed on water meter upper cover and the intracorporal circuit main board of water meter lower cover chamber and magnetosensitive component, magnetosensitive component includes pcb board, and Hall switch and capacitor are equipped on pcb board, and circuit main board is equipped with MCU control module, memory module and display screen.Technical solutions of the utility model improve traditional ultrasonic water meter dismantling prevention structure, provide a kind of easy, efficient, reliable, permanent ultrasonic water meter dismantling prevention structure.

Description

A kind of ultrasonic water meter dismantling prevention structure based on Hall switch

Technical field

The utility model relates to ultrasonic water meter field, in particular to the anti-private of a kind of ultrasonic water meter based on Hall switch Tear structure open.

Background technique

Ultrasonic water meter is produced when time and tide is propagated in water because speed changes by detection ultrasonic wave acoustic beam The raw time difference, the flow velocity that analysis handles to be discharged is to further calculate a kind of new-type water meter of the flow of water outlet.With outstanding Small flow sensing capability, the problem of can solve numerous conventional water meters, the water rate gradient that is more suitable charge is more suitable water resource Saving and rationally utilize, have a vast market and prospect of the application.The set-up mode one of dismantling prevention in existing ultrasonic water meter Kind be using mechanical switch, the fatiguability aging in long-term work and fail, while mechanical switch is to structure and waterproof Technique requirement is higher, causes production efficiency low and production cost rises；Another kind is tongue tube magnet-sensitive switch, and packaging technology is wanted It asks higher and shock resistance is poor, be easy to cause malfunction.

Therefore, how to realize a kind of easy, efficient, reliable, permanent ultrasonic water meter dismantling prevention technology, be that this is practical new A type important technological problems to be solved.

Utility model content

The main purpose of the utility model is to propose a kind of ultrasonic water meter dismantling prevention structure based on Hall switch, it is intended to Improve traditional ultrasonic water meter dismantling prevention structure, a kind of easy, efficient, reliable, permanent ultrasonic water meter dismantling prevention is provided Structure.

To achieve the above object, the utility model proposes a kind of ultrasonic water meter dismantling prevention knot based on Hall switch Structure, including the water meter upper cover mutually spliced and water meter lower cover, cover gab is arranged in rectangle under the water meter upper cover and water meter, described Cover gab is circumferentially with an annular convex platform along it under water meter, and cover gab is equipped with the ring being adapted to the annular convex platform on the water meter The quadrangle of shape mounting groove, the water meter lower cover and the water meter upper cover is fixed by screws, water meter lower cover quadrangle point She You not be for the screw via hole that screw is worn, and a permanent magnet is wherein installed in a screw via hole；It further include being installed on the water Table upper cover and the intracorporal circuit main board of water meter lower cover chamber and magnetosensitive component, the circuit main board passes through with the magnetosensitive component to be connect Conducting wire connection, the magnetosensitive component includes pcb board, and Hall switch and capacitor interconnected are equipped on the pcb board, described Hall switch is corresponding with the permanent magnet, and the magnetosensitive component is placed in a waterproof plastic shell；It is set on the circuit main board There are MCU control module, memory module and display screen, the data storage receiving end of the memory module and the MCU control module Data storage output end connection, the display signal receiving end and the display signal of the MCU control module of the display screen be defeated Outlet connection, the control signal output of the magnetosensitive component are connect with the control signal receiving end of the MCU control module.

Preferably, silica gel screw stopple is also had additional in the screw via hole.

Preferably, two long side of cover gab has additional elastic clamping hook, the water meter upper cover medial surface respectively under the water meter Equipped with the card slot being adapted to the elastic clamping hook.

Preferably, the memory module is set as the eeprom memory of model AT24C32.

Compared with prior art, the utility model has the beneficial effects that by the way that Hall switch is applied to ultrasonic water meter In dismantling prevention technology, effectively prevent mechanical switch in long-term work fatiguability aging and fail, effectively prevent dry spring Pipe magnet-sensitive switch provides a kind of easy, efficient, reliable, permanent ultrasonic water because malfunctioning caused by shock resistance difference Table dismantling prevention technology realizes low-power consumption and the water-proof function of circuit, ensure that the reliability and permanence of circuit.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the overall structure diagram of the utility model ultrasonic water meter；

Fig. 2 is the Structure explosion diagram of the utility model ultrasonic water meter；

Fig. 3 is the principle modules figure of the utility model circuit main board；

Fig. 4 is the utility model MCU main control module circuit diagram；

Fig. 5 is the utility model storage module circuit schematic；

Fig. 6 is the utility model magnetosensitive assembly circuit schematic diagram；

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific embodiment

A kind of ultrasonic water meter dismantling prevention structure based on Hall switch that the present embodiment proposes, as depicted in figs. 1 and 2, Including the water meter upper cover 1 mutually spliced and water meter lower cover 2, the water meter upper cover 1 and the opening of water meter lower cover 2 are arranged in rectangle, institute It states the opening of water meter lower cover 2 and is circumferentially with an annular convex platform 21 along it, the opening of water meter upper cover 1 is equipped with and the annular convex platform 21 The annular mounting groove 11 of adaptation, the water meter lower cover 2 and the quadrangle of the water meter upper cover 1 are fixedly connected by screw 3, the water 2 four jiaos of table lower cover are respectively equipped with the screw via hole 22 worn for screw 3, and wherein install a permanent magnet 4 in a screw via hole 22； It further include being installed on the water meter upper cover 1 and the intracorporal circuit main board 5 of 2 chamber of water meter lower cover and magnetosensitive component 6, the circuit main board 5 are connect with the magnetosensitive component 6 by connecting wire 7, and the magnetosensitive component 6 includes pcb board 61, are installed on the pcb board 61 There are Hall switch 62 and capacitor 63 interconnected, the Hall switch 62 is corresponding with the permanent magnet 4, the magnetosensitive component 6 It is placed in 8 body of a waterproof plastic shell.

When installation, annular mounting groove that the annular convex platform 21 that the water meter lower cover 2 is open is open along the water meter upper cover 1 11 positioning clampings, the two constitute a cavity, improve the leakproofness and waterproofness of the two installation.Further, under the water meter Two long sides of opening of lid 2 have additional elastic clamping hook 23 respectively, and 1 medial surface of water meter upper cover is equipped with suitable with the elastic clamping hook 23 The card slot 12 matched.By the clamping of elastic clamping hook 23 and card slot 12, the stability of the two installation is further improved.Water meter upper cover 1 and after water meter lower cover 2 splices, by lock screw 3 by the locking of four angles of the two, complete whole installation.A wherein screw via hole One permanent magnet 4 is also installed, the permanent magnet 4 is corresponding with the intracorporal Hall switch 62 of chamber, and the permanent magnet 4 is connected to screw in 22 In via hole 22, it is close to by magnetic force with the screw 3 in screw via hole 22, to prevent permanent magnet 4 from dropping out.Further, described Silica gel screw stopple is also had additional in screw via hole 22, and the leakproofness of screw via hole 22 not only can be improved, it can also be further It prevents permanent magnet 4 from dropping out, influences normal use.

As shown in figure 3, the circuit main board 5 is equipped with MCU control module 51, memory module 52 and display screen 53, it is described The data storage receiving end of memory module 52 is connect with the data of the MCU control module 51 storage output end, the display screen 53 display signal receiving end is connect with the display signal output end of the MCU control module 51, the control of the magnetosensitive component 6 Signal output end is connect with the control signal receiving end of the MCU control module 51.It should be noted that in magnetosensitive component 6 Hall switch 62 is corresponding with permanent magnet 4, and Hall switch 62 senses the magnetic pole output low level signal of permanent magnet 4, by low level Signal is sent to MCU control module 51, and MCU control module 51 detects low level signal, holding circuit normal condition.If occurring It tears machine open privately, needs first to take out permanent magnet 4, can just back out screw 3, after permanent magnet 4 takes out, Hall switch 62 incudes less than magnetic Pole exports high level signal, high level signal is sent to MCU control module 51, MCU control module 51 detects that high level is believed Number, circuit alarm is sent to memory module 52 and is stored, meanwhile, alarm command is exported to display screen 53, is reported Alert display, so that water meter private be effectively prevent to tear open.By the way that Hall switch 62 to be applied in ultrasonic water meter dismantling prevention structure, effectively Avoid mechanical switch in long-term work fatiguability aging and fail, effectively prevent tongue tube magnet-sensitive switch because of antidetonation energy It is malfunctioned caused by power difference, provides a kind of easy, efficient, reliable, permanent ultrasonic water meter dismantling prevention technology, realize The low-power consumption of circuit and water-proof function ensure that the reliability and permanence of circuit.

Further, the memory module 52 is set as the eeprom memory of model AT24C32.

The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are also included in the patent protection scope of the utility model.

Claims (4)

1. a kind of ultrasonic water meter dismantling prevention structure based on Hall switch, which is characterized in that including on the water meter that mutually splices Lid and water meter lower cover, cover gab is in rectangle setting under the water meter upper cover and water meter, and cover gab is set along its circumferential direction under the water meter There is an annular convex platform, cover gab is equipped with the annular mounting groove being adapted to the annular convex platform, the water meter lower cover on the water meter It is fixed by screws with the quadrangle of the water meter upper cover, water meter lower cover quadrangle is respectively equipped with the screw worn for screw Via hole, and a permanent magnet is wherein installed in a screw via hole；It further include being installed in the water meter upper cover and water meter lower cover cavity Circuit main board and magnetosensitive component, the circuit main board connect with the magnetosensitive component by connecting wire, the magnetosensitive component Including pcb board, Hall switch and capacitor interconnected, the Hall switch and the permanent magnet are installed on the pcb board Corresponding, the magnetosensitive component is placed in a waterproof plastic shell；The circuit main board is equipped with MCU control module, storage mould The data storage receiving end of block and display screen, the memory module is connect with the data of MCU control module storage output end, The display signal receiving end of the display screen is connect with the display signal output end of the MCU control module, the magnetosensitive component Control signal output connect with the control signal receiving end of the MCU control module.

2. the ultrasonic water meter dismantling prevention structure based on Hall switch as described in claim 1, which is characterized in that the screw Silica gel screw stopple is also had additional in via hole.

3. the ultrasonic water meter dismantling prevention structure based on Hall switch as described in claim 1, which is characterized in that the water meter Lower two long side of cover gab has additional elastic clamping hook respectively, and the water meter upper cover medial surface is equipped with to be adapted to the elastic clamping hook Card slot.

4. the ultrasonic water meter dismantling prevention structure based on Hall switch as described in claim 1, which is characterized in that the storage Module is set as the eeprom memory of model AT24C32.