CN212781139U

CN212781139U - Be applied to heartbeat detection circuitry of FTU battery monitoring module

Info

Publication number: CN212781139U
Application number: CN202021389479.XU
Authority: CN
Inventors: 张伟; 毛荔; 付伦奇
Original assignee: Hangzhou Dingyi Electronic Technology Co ltd
Current assignee: Hangzhou Dingyi Electronic Technology Co ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-03-23
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses a be applied to heartbeat detection circuitry of FTU battery monitoring module, including MCU, still include the pulse integral coil drive circuit and the normal close formula coil drive relay KA of being connected with MCU, pulse integral coil drive circuit includes resistance R1, R2, R3, electric capacity C1, C2, triode Q1, Q2, Q3, Q4 to and diode D1, D2, D3. The utility model discloses an adopt pulse integral coil drive circuit on the coil circuit of drive warning dry contact, avoided when monitoring module inside MCU crashes the problem that the battery detection function loses completely that leads to, guarantee to detect the battery and go wrong, can also detect the problem that MCU appears crashing; in addition, the circuit structure enables the monitoring and maintenance cost of the whole FTU storage battery to be reduced, and simplifies the wiring of the heartbeat detection circuit.

Description

Be applied to heartbeat detection circuitry of FTU battery monitoring module

Technical Field

The utility model relates to a battery monitoring technology field, concretely relates to be applied to heartbeat detection circuitry of FTU battery monitoring module.

Background

The FTU storage battery plays an increasingly critical role as a FTU backup power supply, so that the storage battery needs to be monitored in real time, and early warning is performed for a possibly laggard battery. The FTU storage battery monitoring module possibly causes the module to be in a dead halt state due to the fact that the FTU storage battery monitoring module is applied to FTU occasions and has large electromagnetic pulse interference. Because the FTU storage battery monitoring module only has the dry contact point warning interface to the outside, therefore, the outside is difficult to discover that the FTU storage battery monitoring module is in a dead halt state only through the signal.

The traditional heartbeat detection scheme of the FTU storage battery monitoring module has the main contact point alarm realization mode which is realized by 1 relay contact, as shown in figure 1, two redundancy modes of communication and main contact point alarm are adopted in more industrial occasions, and whether the FTU storage battery monitoring module is in a halt state is judged by adding a heartbeat frame in a communication protocol. Considering that the field electromagnetic compatibility environment generally has certain requirements on communication wiring, and only the occasion of a dry contact alarm signal exists, the scheme cannot be implemented.

As shown in fig. 2, in the conventional driving circuit of the dry contact coil part, when a problem of the battery is detected, an I/O port of the MCU outputs a high level to close a contact of the normally open relay, thereby realizing an alarm; when the battery has no problem, the I/O port outputs low level, and the contact of the normally open relay is not closed. At this time, if the MCU in the monitoring module crashes, the function of the entire battery detection is completely lost, and the external monitoring platform cannot recognize this phenomenon at all.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome not enough of above technique, provide a heartbeat detection circuit who is applied to FTU battery monitoring module.

The utility model overcomes the technical scheme that its technical problem adopted is:

a heartbeat detection circuit applied to an FTU storage battery monitoring module comprises an MCU, a pulse integration coil driving circuit and a normally closed coil driving relay KA which are connected with the MCU, wherein the pulse integration coil driving circuit comprises resistors R1, R2 and R3, capacitors C1 and C2, triodes Q1, Q2, Q3 and Q4, diodes D1, D2 and D3, an I/O port of the MCU is connected with a base electrode of a triode Q1 through a resistor R1, a collector electrode of the triode Q1 is respectively connected with one end of a resistor R2, a base electrode of a triode Q3 and a base electrode of the triode Q2, an emitter electrode of the triode Q1 is grounded, the other end of the resistor R2 and a collector electrode of the triode Q3 are connected with a power supply VCC, an emitter electrode of the triode Q3 is connected with an emitter electrode of a triode Q2 and is respectively connected with an anode of a diode D1 and a cathode of the diode D2 after passing through a capacitor C1, the negative electrode of the diode D1 is connected with one end of the resistor R3 and one end of the capacitor C2 respectively, the collector of the triode Q2, the positive electrode of the diode D2 and the other end of the capacitor C2 are all grounded, the other end of the resistor R3 is connected with the base of the triode Q4, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with the positive electrode of the diode D3, and the negative electrode of the diode D3 is connected with the power supply VCC; and two ends of a coil of the normally closed coil driving relay KA are respectively connected to the anode and the cathode of the diode D3.

Furthermore, the triodes Q1, Q3 and Q4 are all NPN triodes; the transistor Q2 is a PNP transistor.

Further, the voltage of the normally closed coil driving relay KA is 5-24V.

The utility model has the advantages that:

the utility model discloses an adopt pulse integral coil drive circuit on the coil circuit of drive warning dry contact, avoided when monitoring module inside MCU crashes the problem that the battery detection function loses completely that leads to, guarantee to detect the battery and go wrong, can also detect the problem that MCU appears crashing; in addition, the circuit structure enables the monitoring and maintenance cost of the whole FTU storage battery to be reduced, and simplifies the wiring of the heartbeat detection circuit.

Drawings

Fig. 1 is a schematic block diagram of heartbeat detection of a conventional FTU battery monitoring module.

Fig. 2 shows a conventional dry contact coil portion driving circuit.

Fig. 3 is a pulse integrating coil driving circuit according to an embodiment of the present invention.

Detailed Description

In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and thus do not limit the scope of the present invention.

The utility model discloses a be applied to heartbeat detection circuitry of FTU battery monitoring module, including MCU, the pulse integrating coil drive circuit and the normal close formula coil drive relay KA of being connected with MCU, because MCU is not the utility model discloses an innovation point, so do not have detailed drawing in the circuit diagram, adopt the field common MCU can, here is no longer repeated. The utility model discloses improve the biggest place in, increased pulse integrating coil drive circuit.

In this embodiment, as shown in fig. 3, the pulse integration coil driving circuit includes resistors R1, R2, R3, capacitors C1, C2, triodes Q1, Q2, Q3, Q4, and diodes D1, D2, and D3, where the triodes Q1, Q3, and Q4 all use NPN triodes, and the triode Q2 uses a PNP triode; the I/O port of the MCU is connected with the base electrode of a triode Q1 through a resistor R1, the collector electrode of the triode Q1 is respectively connected with one end of a resistor R2, the base electrode of a triode Q3 and the base electrode of a triode Q2, the emitter electrode of a triode Q1 is grounded, the other end of the resistor R2 and the collector electrode of the triode Q3 are connected with a power VCC, the emitter electrode of a triode Q3 and the emitter electrode of the triode Q2 are connected and respectively connected with the anode electrode of a diode D1 after passing through a capacitor C1, the negative electrode of the diode D2 is connected, the negative electrode of the diode D1 is connected with one end of a resistor R3 and one end of a capacitor C2 respectively, the collector of the triode Q2, the anode of the diode D2 and the other end of the capacitor C2 are grounded, the other end of the resistor R3 is connected with the base of the triode Q4, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with the anode of the diode D3, and the negative electrode of the diode D3 is connected with a power supply VCC; and two ends of a coil of the normally closed coil driving relay KA are respectively connected to the anode and the cathode of the diode D3.

Table 1 below shows the types of relevant devices used in the pulse integrating coil driving circuit described in this embodiment, and is applicable to a 5-24V normally closed coil driving relay.

TABLE 1 types of relevant devices used in pulse integration coil driving circuit

Serial number	Device name	Specification and model
			1	R1、R2、R3	10K 0805 ±1%
2	C1、C2	1uF 0805 50V ±10%
			3	Q1、Q3、Q4	MMBT5551
4	Q2	MMBT5401
			5	D1、D2、D3	1N4007

The operating principle of the heartbeat detection circuit applied to the FTU battery monitoring module described in this embodiment is as follows:

when the battery has no problem, the I/O port of the MCU sends PWM square waves, and then direct current voltage close to VCC is formed after the pulse integrating coil driving circuit so as to drive the relay KA, so that the normally closed coil driving relay KA is disconnected with the normally closed contact, and no alarm is sent.

When detecting that the battery goes wrong, the I/O port of the MCU stops sending PWM square waves, and the coil of the normally closed coil driving relay KA cannot be driven at the moment, so that the normally closed contact of the normally closed coil driving relay KA is closed, and an alarm signal is sent.

When MCU is in the crash state, MCU's I/O mouth then can only export the level state that MCU sent before the crash, be low level or be the high level always promptly, these two kinds of level signals can't pass through pulse integrating coil drive circuit all the time to can't drive the coil of normally closed formula coil drive relay KA, make the normally closed contact closure of normally closed formula coil drive relay KA, thereby send alarm signal, outside monitoring platform just can discover like this that the battery reports an emergency and asks for help or monitor module's trouble problem.

The foregoing has described only the basic principles and preferred embodiments of the present invention and numerous changes and modifications may be made by those skilled in the art in light of the above teachings and shall fall within the scope of the present invention.

Claims

1. A heartbeat detection circuit applied to an FTU storage battery monitoring module comprises an MCU and is characterized by further comprising a pulse integrating coil driving circuit and a normally closed coil driving relay KA which are connected with the MCU, wherein the pulse integrating coil driving circuit comprises resistors R1, R2 and R3, capacitors C1 and C2, a triode Q1, Q2, Q3 and Q4, diodes D1, D2 and D3, an I/O port of the MCU is connected with a base electrode of a triode Q1 through the resistor R1, a collector electrode of the triode Q1 is respectively connected with one end of the resistor R2, a base electrode of the triode Q3 and a base electrode of the triode Q2, an emitter electrode of the triode Q1 is grounded, the other end of the resistor R2 and a collector electrode of the triode Q3 are connected with a power supply VCC, an emitter electrode of the triode Q3 and an emitter electrode of the triode Q2 are respectively connected with an anode of a diode D1 and a cathode of a diode D2 after passing through the capacitor C1, the negative electrode of the diode D1 is connected with one end of the resistor R3 and one end of the capacitor C2 respectively, the collector of the triode Q2, the positive electrode of the diode D2 and the other end of the capacitor C2 are all grounded, the other end of the resistor R3 is connected with the base of the triode Q4, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with the positive electrode of the diode D3, and the negative electrode of the diode D3 is connected with the power supply VCC; and two ends of a coil of the normally closed coil driving relay KA are respectively connected to the anode and the cathode of the diode D3.

2. A heartbeat detection circuit as claimed in claim 1 and applied to an FTU battery monitoring module, wherein the transistors Q1, Q3 and Q4 are NPN transistors; the transistor Q2 is a PNP transistor.

3. The heartbeat detection circuit as claimed in claim 1, applied to an FTU battery monitoring module, wherein the normally closed coil drive relay KA has a voltage of 5-24V.