A counting triggering method for a double reed switch intelligent water meter

Abstract

The present invention discloses a method for triggering counting of a dual-reed switch smart water meter. The method requires a dual-reed switch smart water meter, wherein the dial of the dual-reed switch smart water meter includes reed switches ① and ②, and a magnet. The method includes the following steps: S100, setting the FirstIRQ variable and the Count_flag variable, wherein the initial value of the FirstIRQ variable is "0" and is used to record the number of the reed switch that the water meter pointer first passes through; S110, the initial value of the Count_flag variable is also "0", where Count_flag = "0" indicates that counting is not triggered, and Count_flag = "1" indicates that counting is triggered, and the water meter then enters a monitoring state. In the present invention, by modifying the counting triggering mechanism of the smart water meter, the water meter count is triggered only when the pointer on the mechanical dial sequentially passes through the two reed switches, thereby avoiding incorrect water meter counting caused by the water meter dial being reversed or the water pressure being unstable. Furthermore, the water meter pointer sequentially passes through the two reed switches in no fixed order, which makes the water meter count more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of smart water meters, and in particular to a counting triggering method for a double-reed switch smart water meter. Background Art

[0002] Existing water meters use a single reed switch to count. This triggers the meter to count as soon as the pointer on the meter dial moves over the reed switch. However, in practice, unstable water pressure or backflow in the pipes can cause the pointer on the dial to repeatedly swing around the reed switch position, causing the meter to repeatedly trigger the count while the dial's mechanical reading remains unchanged. This can cause meter counting problems.

[0003] Some existing water meters also use dual reed switch counting, but the two reed switches are programmed in a fixed order when counting. For example, counting is triggered only when the water meter pointer passes through reed switches ① and ② in sequence, and the water meter does not trigger counting when the water meter pointer passes through reed switches ② and ① in sequence. This will cause the water meter to count less each time it starts counting. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of inaccurate counting caused by repeated swinging of the pointer of the water meter in actual application, and to propose a counting triggering method for a double reed switch intelligent water meter.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A counting triggering method for a double reed switch smart water meter requires the use of a double reed switch smart water meter, wherein the dial of the double reed switch smart water meter includes reed switch No. 1, reed switch No. 2, and a magnet, and includes the following steps:

[0007] S100, setting the FirstIRQ variable and the Count_flag variable, wherein the initial value of the FirstIRQ variable is "0", which is used to record the label of the reed switch that the water meter pointer first sweeps;

[0008] S110, the initial value of the Count_flag variable is also "0", Count_flag = "0" indicates that the counting is not triggered, Count_flag = "1" indicates that the counting is triggered, and then the water meter enters the monitoring state;

[0009] S200, when the water meter pointer is detected to pass through the No. 1 reed switch, the value of FirstIRQ is determined. If FirstIRQ is not equal to 2, FirstIRQ is set to "1";

[0010] S210, if FirstIRQ is equal to 2, set Count_flag to "1", indicating that counting is triggered;

[0011] S300, when the water meter pointer is detected to pass through the reed switch No. ②, the value of FirstIRQ is determined. If FirstIRQ is not equal to 1, FirstIRQ is set to "2";

[0012] S310 : If FirstIRQ is equal to 1, set Count_flag to “1”, indicating that counting is triggered.

[0013] As a further description of the above technical solution:

[0014] The magnet is installed on the pointer of the "X0.01" scale on the dial of the double reed switch smart water meter. The No. 1 reed switch and the No. 2 reed switch are respectively located on the double reed switch smart water meter and on both sides of the "X0.01" scale.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] In the present invention, by changing the counting trigger mechanism of the smart water meter, the water meter counting is triggered only when the pointer on the mechanical dial sweeps over the two reed switches in sequence, thereby avoiding incorrect water meter counting caused by the water meter dial being reversed or the water pressure being unstable; at the same time, there is no fixed order when the water meter pointer sweeps over the two reed switches in sequence, which makes the water meter counting more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a counting logic flow chart of a counting triggering method for a double reed switch intelligent water meter proposed by the present invention;

[0018] Figure 2 Schematic diagram of the dial of a double reed switch smart water meter.

[0019] Legend:

[0020] 1. Reed switch No. 1; 2. Reed switch No. 2; 3. Magnet. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] See also Figure 1 and Figure 2The present invention provides a technical solution: a counting triggering method for a double reed switch smart water meter, which requires the use of a double reed switch smart water meter. The dial of the double reed switch smart water meter includes a No. ① reed switch 1, a No. ② reed switch 2, and a magnet 3, and includes the following steps:

[0023] Step 1. Set the FirstIRQ and Count_flag variables. The initial value of the FirstIRQ variable is "0" to record the first reed switch number that the water meter pointer sweeps over. The initial value of the Count_flag variable is also "0". Count_flag = "0" means that the count is not triggered, and Count_flag = "1" means that the count is triggered, and the water meter enters the monitoring state.

[0024] Step 2: When the water meter pointer passes through reed switch ①, determine the value of FirstIRQ. If FirstIRQ is not equal to 2, set FirstIRQ to "1". If FirstIRQ is equal to 2, set Count_flag to "1", indicating that counting is triggered.

[0025] Step 3: When the water meter pointer is detected to pass through reed switch No. ②, determine the value of FirstIRQ. If FirstIRQ is not equal to 1, set FirstIRQ to "2". If FirstIRQ is equal to 1, set Count_flag to "1", indicating that counting is triggered.

[0026] Specifically, such as Figure 2 As shown, the magnet 3 is installed on the pointer of the "X0.01" scale on the dial of the double reed switch smart water meter, and the reed switch No. 1 and the reed switch No. 2 are respectively on the double reed switch smart water meter and located on the oblique sides of the "X0.01" scale.

[0027] Working principle: When using, the existing water meter reed switch counts, such as Figure 2 There is only reed switch 1 No. ① in the circuit. If the "X0.01" scale pointer repeatedly swings near reed switch 1 No. ①, reed switch 1 No. ① will be repeatedly activated by the magnetic attraction of magnet 3, resulting in repeated triggering and counting. This will cause problems when counting with a single reed switch. In the present invention, when this happens, counting will not be triggered. At the same time, when counting with two reed switches, if the installation sequence is fixed, for example, the order is from reed switch 1 No. ① to reed switch 2 No. ②, Figure 2 When the "X0.01" scale pointer rotates 2 circles, the pointer sweeps through the ②①②① reed switches in sequence. At this time, there is only one ①② sequence, so the water meter count is only triggered once, resulting in incorrect water meter counting. In the present invention, no matter whether the sequence number swept by the pointer is ②①②① or ①②①②, it is counted twice, so the water meter counting of the present invention is more accurate.

[0028] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A counting triggering method for a double reed switch intelligent water meter, which requires the use of a double reed switch intelligent water meter, wherein the dial of the double reed switch intelligent water meter includes a No. ① reed switch (1), a No. ② reed switch (2) and a magnet (3), and is characterized in that: The steps are as follows: S100, set the FirstIRQ variable and the Count_flag variable, wherein the initial value of the FirstIRQ variable is "0", which is used to record the label of the reed switch that the water meter pointer first sweeps; S110, the initial value of the Count_flag variable is also "0", Count_flag = "0" means that the counting is not triggered, Count_flag = "1" means that the counting is triggered, and then the water meter enters the monitoring state; S200, when the water meter pointer is detected to pass through the No. 1 reed switch, the value of FirstIRQ is determined. If FirstIRQ is not equal to 2, FirstIRQ is set to "1"; S210: If FirstIRQ is equal to 2, set Count_flag to "1", indicating that counting is triggered; S300, when the water meter pointer is detected to pass through the reed switch No. ②, the value of FirstIRQ is determined. If FirstIRQ is not equal to 1, FirstIRQ is set to "2"; S310: If FirstIRQ is equal to 1, set Count_flag to "1", indicating that counting is triggered.

2. A double reed switch intelligent water meter counting triggering method according to claim 1, characterized in that: The magnet (3) is mounted on the pointer of the "X0.01" scale on the dial of the double reed switch intelligent water meter, and the No. 1 reed switch (1) and the No. 2 reed switch (2) are respectively located on the double reed switch intelligent water meter and on both sides of the "X0.01" scale.

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